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Alstom Technology Ltd patents (2015 archive)


Recent patent applications related to Alstom Technology Ltd. Alstom Technology Ltd is listed as an Agent/Assignee. Note: Alstom Technology Ltd may have other listings under different names/spellings. We're not affiliated with Alstom Technology Ltd, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "A" | Alstom Technology Ltd-related inventors


12/31/15 / #20150380934

Pre-processing of data for automatic generation control

Pre-processing of electrical power grid data for event-driven automatic generation control (agc) is presented herein. An area control error (ace) component can determine agc output data for output to a unit controller that controls at least one power generator related to an electrical power grid, based on current values of a subset of electrical power grid data associated with the electrical power grid that has changed since a prior determination that the electrical power grid data has changed. ... Alstom Technology Ltd

12/31/15 / #20150380865

Securing device for gis

A fastener device for a gas-insulated substation (gis) type installation comprising a threaded shank and a ring including a duct configured to receive the threaded shank, the ring being housed in a supporting insulator of the invention.. . ... Alstom Technology Ltd

12/31/15 / #20150377487

Damper for gas turbine

The present invention generally relates to a gas turbine and more in particular it is related to a damper assembly for a combustion chamber of a gas turbine. According to preferred embodiments, the present solution provides a damper assembly including protrusions on a wall of the neck. ... Alstom Technology Ltd

12/31/15 / #20150377134

Combustor cooling structure

The invention relates to a transition piece assembly for a gas turbine. A transition piece having one end adapted for connection to a gas combustor and an opposite end adapted for connection to a first turbine stage. ... Alstom Technology Ltd

12/24/15 / #20150372675

Method of switching a semiconductor device

. . . . There is provided a method of switching on a semiconductor device. The semiconductor device includes gate, collector and emitter terminals. ... Alstom Technology Ltd

12/24/15 / #20150372474

Circuit interruption device

A circuit interruption device includes a main branch; a secondary branch having an electrical on-resistance which is higher than an electrical on-resistance of the main branch; and first and second terminals for connection to an electrical network, the main and secondary branches extending between the first and second terminals. The main branch includes a switching apparatus which is switchable to selectively allow current to flow in the main branch in a normal mode of operation or commutate current from the main branch to the secondary branch in a fault mode of operation. ... Alstom Technology Ltd

12/24/15 / #20150369483

Coal fired oxy plant with heat integration

A coal fired oxy boiler power plant with a condensate system, combustion system and post combustion co2 capture plant configured and arranged to remove co2 from a flue gas stream generated in the combustion system. The condensation system includes a plurality of serial low pressure heaters arranged in flow series downstream of the pump and at least one parallel low pressure heater arranged fluidly parallel to at least one of the serial low pressure heaters. ... Alstom Technology Ltd

12/24/15 / #20150369126

Method for recirculation of exhaust gas from a combustion chamber of a combustor of a gas turbine and gas turbine for doncuting said method

A method for recirculation of exhaust gas from a combustion chamber of a combustor of a gas turbine back to the supply side of the combustor provides a partial flow of the exhaust gas in the combustion chamber directly extracted from the combustion chamber and internally fed back to an entrance of the combustor through an internal channel of the combustor.. . ... Alstom Technology Ltd

12/24/15 / #20150369125

Method for increasing the power of a combined-cycle power plant, and combined-cycle power plant for conducting said method

The invention relates to a method for temporary increasing the power of a gas turbine, which is part of a combined-cycle power plant, wherein the exhaust gas of the gas turbine is used in a heat recovery steam generator to generate steam for a water/steam cycle including a steam turbine with a high pressure steam turbine, an intermediate pressure steam turbine and a low pressure steam turbine, whereby the method comprises the step of injecting steam from the water/steam cycle at a predetermined injection pressure into the gas turbine. The efficiency is improved by taking steam of a lower pressure than the predetermined injection pressure from the water/steam cycle, increasing the pressure of the steam taken from the water/steam cycle to the predetermined injection pressure by subjecting it in separate compressing means to a compression step, and injecting the compressed steam into the gas turbine.. ... Alstom Technology Ltd

12/24/15 / #20150368191

Method of forming urea by integration of an ammonia production process in a urea production process and a system therefor

A method of forming urea by integration of an ammonia production process with that of a urea production process, as well as a system for the method is disclosed. Also, an alternative method of forming urea by integration of a part of an ammonia production process with that of a urea production process, as well as a system for the alternative method.. ... Alstom Technology Ltd

12/24/15 / #20150368157

Calciner and a method for calcination of a carbon dioxide rich sorbent

A method for calcination of a carbon dioxide rich sorbent (containing caco3) includes combusting in a furnace a fuel with an oxidizer, supplying heat transfer (ht) solids into the furnace and heating them, transferring the ht solid particles from the furnace to a reactor having a rotatable container, supplying a carbon dioxide rich solid sorbent (containing caco3) into the rotatable container, rotating the rotatable container for mixing the solid particles and the carbon dioxide rich solid sorbent for transferring heat from the solid particles to the carbon dioxide rich solid sorbent and generating carbon dioxide and carbon dioxide lean solid sorbent (mainly cao), discharging the carbon dioxide and the carbon dioxide lean solid sorbent from the rotatable container and the subsequent classification of the ht solids from the lean sorbent.. . ... Alstom Technology Ltd

12/24/15 / #20150367282

High rotational momentum disperser and use

A spray dryer disperser 24, 26, 28, 30 is described for use in a spray dryer absorption (sda) system 18 for flue gas fg impurity reduction. As such, the spray dryer disperser 24, 26, 28, 30 disperses absorbent liquid or reagent slurry droplets into contact with a hot flue gas fg stream containing gaseous impurities to produce a flue gas fg stream of reduced impurity content and dry powder end products ep. ... Alstom Technology Ltd

12/17/15 / #20150362218

Solar receiver configuration

A solar receiver configuration (receiver) adapted to include a plurality of receiver heat transfer passes. Each pass includes a plurality of panels. ... Alstom Technology Ltd

12/17/15 / #20150362187

Gas processing unit and method of operating the same

A plant (1) and a gas processing unit (gpu) (17) of the plant can be configured to operate in accordance with a method that is configured to permit the gpu (17) to operate such that the optimum operating point for the gpu (17) at steady state to produce liquid carbon dioxide product from a separation unit (117) of the gpu (17) for sending to a storage device (19) is achieved with a desired purity level while simultaneously maintaining a required minimum carbon capture rate with the minimum consumption of power and/or minimum economic cost associated with operations of the gpu (17). A controller (23) can be configured to communicate with elements of the gpu (17) to receive parameter values to calculate manipulated variables configured to bias set points for parameters used to control operations of different elements of the gpu (17).. ... Alstom Technology Ltd

12/17/15 / #20150362181

Coal rope distributor with replaceable wear components

A head assembly for a pulverized coal nozzle includes removeable wear-resistant inserts having vanes. The vanes may be flat or curved to direct a stream of air and pulverized solid fuel particles from the inlet port toward the outlet port. ... Alstom Technology Ltd

12/17/15 / #20150361889

Impingement cooled wall arrangement

An impingement cooled wall arrangement includes a flow diverter arranged in the cooling flow path between the cooled wall and a sleeve to divert a cross flow away from a second aperture. The flow diverter extends in downstream direction of the cross flow beyond the second aperture with a first leg extending along one side of the second aperture in downstream direction of the cross flow and a second leg extending along the other side of the second aperture. ... Alstom Technology Ltd

12/17/15 / #20150361813

Rotor assembly for gas turbine

The present invention relates to a rotor assembly for a rotary machine such as a gas turbine. The present solution provides a sealing wire located inside a groove engraved in the rotor body. ... Alstom Technology Ltd

12/10/15 / #20150357941

Voltage source converter comprising a chain-link converter

. . A voltage source converter comprises: at least two converter limbs, each converter limb extending between dc terminals and having limb portions separated by an ac terminal. Each limb portion includes at least one switching element and at least one chain-link converter including series-connected modules. ... Alstom Technology Ltd

12/10/15 / #20150357931

Converter

A voltage source converter (30) comprises a converter limb (36), having primary and secondary limbs connected in parallel between first and second dc terminals (32,34), the primary limb element including first and second primary limb element portions (38,40) separated by a third terminal (42), being connectable to an ac electrical network (46), each primary limb element portion (38,40) including at least one primary switching element (50), the secondary limb including first and second secondary limb element portions (52,54) separated by a junction (56), and including a dc side chain-link converter (58), and a connection interconnecting the third terminal (42) and the junction (56) wherein the voltage source converter (30) further includes a control unit (62) controlling the switching of the respective switching elements.. . ... Alstom Technology Ltd

12/10/15 / #20150357901

Voltage source converter

A voltage source converter includes a converter limb extending between dc terminals and having limb portions separated by an ac terminal, the dc terminals being connectable to a dc electrical network and the ac terminal being connectable to an ac electrical network. Each limb portion includes at least one switching element and a chain-link converter including a series-connected modules, each module including at least one switching element and at least one energy storage device combining to selectively provide a voltage source. ... Alstom Technology Ltd

12/10/15 / #20150357135

Circuit breaker provided with means that reduce the switching arc between permanent contacts

A movable permanent contact (4) is made up of two portions (8, 11) separated by a dielectric spacer (12) and in communication with the electrical terminal (6) by means of respective rings of contacts (9, 10). The current flows mainly in the front ring (10) and the end of the portion (8) in normal operation. ... Alstom Technology Ltd

12/10/15 / #20150357128

Electrical apparatus with dual movement of contacts comprising a return device with two levers

The invention provides electric power line switchgear (10) comprising a main movable contact (14) and a secondary movable contact (16), capable of moving along a main axis a of the switchgear (10), in which the main movable contact (14) is connected to the secondary movable contact (16) by means of a crank mechanism (20) that transforms the movement of the main movable contact (14) in one direction into a movement of the secondary movable contact (16) in an opposite direction; the switchgear being characterized in that the crank mechanism (20) comprises two levers (22, 24) mounted to pivot relative to the stationary housing (12) about respective parallel pivot axes (b, c), each lever (22, 24) being connected firstly to a respective one of the main movable contact (14) and the secondary movable contact (16), and secondly to the other lever (24, 22).. . ... Alstom Technology Ltd

12/10/15 / #20150354826

Annular combustion chamber of a gas turbine and gas turbine with such a combustion chamber

The invention relates to an annular combustion chamber of a gas turbine having a machine axis. The combustion chamber includes at least two zones. ... Alstom Technology Ltd

12/03/15 / #20150349536

Control circuit

. . A control circuit (20) comprises: first and second terminals (22,24) for respective connection to first and second power transmission lines (26,28); a current transmission path (30,32) extending between the first and second terminals (22,24), the current transmission path (30,32) including at least one module (36), the or each module (36) including at least one energy storage device, the current transmission path (30,32) including at least one inductor (38); a control unit (46) which selectively removes the or each energy storage device of the or each module from the current transmission path (30,32) to modulate a voltage across the or each inductor (38) in a filtering mode to modify current flowing through the current transmission path (30,32) and thereby filter one or more current components from the power transmission lines (26,28); and at least one energy conversion element, wherein the control unit (46) selectively removes the or each energy storage device of the or each module (36) from the current transmission path (30,32) in an energy removal mode to cause current to flow from the power transmission lines (26,28) through the current transmission path (30,32) and into the or each energy conversion element to remove energy from the power transmission lines (26,28).. . ... Alstom Technology Ltd

12/03/15 / #20150349520

Electrical apparatus

An electrical apparatus (10) comprises: first and second terminals (18,20) for connection to an electrical circuit; a chain-link converter (22) connected between the first and second terminals (18,20), the chain-link converter (22) including a plurality of chain-link modules (24), each chain-link module (24) inluding at least one switching element (26) and at least one energy storage device (28), the or each switching element (26) and the or each energy storage device (28) of each chain-link module (24) combining to selectively provide a voltage source; and a protection device (32) connected across an electrical block (34) that includes at least two of the plurality of chain-link modules (24), the protection device (32) including a plurality of series-connected semiconductor devices (36), wherein the protection device (32) selectively provides a current-conductive path to allow at least part of a current flowing in the electrical apparatus (10) to bypass the electrical block (34).. . ... Alstom Technology Ltd

12/03/15 / #20150348718

Spring control device for a circuit breaker

For application to medium- and high-voltage circuit breakers, the control device makes it possible to actuate opening of the circuit breakers used in the medium- and high-voltage networks very quickly. The spring used in the control device is a spring of the composite type, having a curved c- or Ω-shape. ... Alstom Technology Ltd

12/03/15 / #20150345297

Gas turbine blade

The invention refers to a gas turbine blade including an airfoil extending in radial direction from a blade root to a blade tip, defining a span ranging from 0% at the blade root to 100% at the blade tip, and extending in axial direction from a leading edge to a trailing edge, which limit a chord with an axial chord length defined by an axial length of a straight line connecting the leading edge and trailing edge of the airfoil depending on the span. The axial chord length increases at least from 80% span to 100% span.. ... Alstom Technology Ltd

12/03/15 / #20150343374

Ammonia stripper for a carbon capture system for reduction of energy consumption

A method of operating a carbon capture system, such as a chilled ammonia process, to remove carbon dioxide from a flue gas stream. The carbon capture system includes a cooling system, a carbon dioxide absorption system and an ammonia absorption system. ... Alstom Technology Ltd

12/03/15 / #20150343373

Carbon capture system and method for capturing carbon dioxide

A carbon capture system includes a carbonator for adsorbing carbon dioxide with a carbon dioxide lean sorbent generating a carbon dioxide rich sorbent, a first calciner for thermally decomposing a carbon dioxide rich sorbent into a carbon dioxide lean sorbent and carbon dioxide, a supply of raw material to be calcined into the first calciner containing a carbon dioxide rich sorbent, a connection between the first calciner and the carbonator, a second calciner for thermally decomposing a carbon dioxide rich sorbent into a carbon dioxide lean sorbent and carbon dioxide, a connection between the carbonator and the second calciner, and a connection between the second calciner and the carbonator.. . ... Alstom Technology Ltd

11/26/15 / #20150340859

Method of fault clearance

. . There is a method of fault clearance for a voltage source converter that interconnects a dc network and an ac network. The voltage source converter is connected to the dc network via one or more dc circuit interruption devices. ... Alstom Technology Ltd

11/26/15 / #20150340179

Current connection and/or cut-off device comprising permanent contacts with reduced wear

Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. ... Alstom Technology Ltd

11/26/15 / #20150337742

Gas turbine with fuel composition control

A method for operating a gas turbine plant is provided. According to the method a first fuel gas with a first fuel reactivity and a second fuel gas with a second fuel reactivity which is higher than the first fuel reactivity are injected into a combustor of the gas turbine, and the ratio of the mass flows of the second fuel gas to the first fuel gas is controlled depending on the combustion behavior of the combustor. ... Alstom Technology Ltd

11/26/15 / #20150337741

Gas turbine with fuel composition control

A plant with a fuel system includes a gas separation system for separating at least a first fuel fraction with high hydrocarbons, which has a higher concentration of high hydrocarbons than an incoming fuel gas. A second fuel fraction with a reduced concentration of high hydrocarbons is provided. ... Alstom Technology Ltd

11/26/15 / #20150337685

Method and device for mounting and removing a turbine component

The disclosure pertains to a mounting arrangement for installing and removing a turbine component. The mounting arrangement has a base cage, a main cage, and an inner structure. ... Alstom Technology Ltd

11/26/15 / #20150336222

Method and device for mounting and removing of a turbine component

The disclosure pertains to a mounting system for mounting and/or removing a turbine component from a turbine. The mounting system includes a suspended rail structure for moving the turbine component with a traveller which movably connects a holder for holding the turbine component to the rail structure. ... Alstom Technology Ltd

11/26/15 / #20150336049

Wet scrubber and a method of cleaning a process gas

A wet scrubber (1) useful for cleaning a process gas comprises at least a first spray level system (20) and a second spray level system (26) arranged vertically above the first spray level system (20) in a wet scrubber tower (2). The first spray level system (20) comprises at least one gas-liquid contacting plate (38) which is operative for deflecting absorption liquid, that has been atomized by means of the second spray level system (26) and flowing downward in the wet scrubber tower (2), so deflected absorption liquid (al) may contact process gas (f) contacted by absorption liquid atomized by the first spray level system (20).. ... Alstom Technology Ltd

11/19/15 / #20150330628

Oxy boiler power plant with a heat integrated air separation unit

An air separation unit is disclosed which is thermally integrated into a coal fired oxy boiler power plant. The air separation unit has a dryer with a dryer heater, wherein an extraction line connects the steam extraction port to the dryer heater. ... Alstom Technology Ltd

11/12/15 / #20150326160

Static exciter system for generators

The present invention relates to the field of generator technology. It is an object of the invention to control the stability in an electric grid in which a plurality of generators are connected providing electric power to the grid. ... Alstom Technology Ltd

11/12/15 / #20150325386

Control device of the spring type particularly for a high-voltage or medium-voltage circuit breaker or switch

The control device possesses a rigid main part combining most of the functional elements of this type of control device. It is made up of two portions of a rotary shaft, having placed between them a cam and a support arm that are connected together by a pivot that is offset relative to the axis of rotation. ... Alstom Technology Ltd

11/12/15 / #20150323180

Coal fired oxy plant with heat integration

A coal fired oxy boiler power plant having a combustion system configured to burn coal using an oxygen stream to produce a flue gas stream, a co2 capture system connected to the flue gas stream and a steam cycle with serially arranged low pressure heaters forming part of a condensate system. The combustion system includes, an air separation unit for removing n2 from air to produce the oxygen stream for the boiler. ... Alstom Technology Ltd

11/12/15 / #20150323179

Oxy boiler power plant oxygen feed system heat integration

A coal fired oxy boiler power plant is disclosed in which a steam coil oxygen preheater located on an oxygen line air separation unit is thermally integrated with the condensate system. Thermal energy for the steam coil oxygen preheater is provided via an extraction line connected to a steam extraction port of an intermediate pressure steam turbine. ... Alstom Technology Ltd

11/12/15 / #20150322798

Airfoil with improved cooling

The present invention relates to an airfoil for a gas turbine, including an improved turbulator arrangement formed on an inner cooling channel of the airfoil. According to preferred embodiments of the invention, in order to ensure a constant angle of the cooling flow inside the channel relative to each turbulator, the angle formed between the turbulator and the vertical axis is advantageously adapted, in the curved area, for every single turbulator. ... Alstom Technology Ltd

11/12/15 / #20150322557

Method for post-built heat treatment of additively manufactured components made of gamma-prime strengthened superalloys

The invention relates to a method of post-built up heat treatment of an additively manufactured high strength component made of a gamma-prime strengthened superalloy based on ni or co or fe or combinations thereof. An application of a rapid heating-up rate of 25 to 60° c./min in a specific temperature range during the first post-built heat treatment after additive manufacturing avoids or at least minimizes the gamma-prime precipitation in the component during heat-up. ... Alstom Technology Ltd

11/12/15 / #20150321123

Antifoam device and method of use for seawater foam control

An antifoam device and a method of using the antifoam device are useful to control levels of foam generated on the surface of effluent seawater during aeration of the effluent seawater in a seawater aeration basin. Effluent seawater contained within the seawater aeration basin may be produced in a seawater flue gas desulfurization system associated with a power plant or an aluminum production plant.. ... Alstom Technology Ltd

11/05/15 / #20150318124

Improved circuit breaker apparatus

A switchgear comprising a set of arcing contacts, a set of disconnection contacts, and a set of permanent contacts, a first branch including the set of arcing contacts and the set of disconnection contacts connected in series, a second branch including the set of permanent contacts, the second branch being connected in parallel with the first branch, including a first controller and a second controller, the first controller making it possible to cause the set of arcing contacts and of the set of permanent contacts, the second controller making it possible to cause the set of disconnection contacts change over between its two positions, said disconnection contacts being able to change over towards its open position only when the set of arcing contacts and the set of permanent contacts are in their open positions, the two controllers being separate, the second being a button connected to an electric motor.. . ... Alstom Technology Ltd

10/22/15 / #20150301102

Method for recognizing partial discharges emitted inside or outside an electrical apparatus

. . A method of recognizing partial discharges emitted inside or outside electrical equipment after at least one partial discharge activity has been detected partial discharge patterns are recorded beforehand in a data base, each pattern being associated with the type of fault that generated it. A new partial discharge (pd) pattern is acquired. ... Alstom Technology Ltd

10/22/15 / #20150300184

Apparatus and method for the forming of turbine vane cover plates

A method is provided for reconditioning a turbomachine vane cover plate, by a forming apparatus. The vane having a mounting portion, an airfoil extending radially outward therefrom and a vane head connected to the airfoil. ... Alstom Technology Ltd

10/01/15 / #20150276326

System for reversibly storing electrical energy as thermal energy

A system for reversibly storing electrical energy as thermal energy. The system can include a reversible subcritical vapour-liquid cycle energy storage system with a single hot storage fluid tank and cold storage fluid tank that are inter connected by an inter storage tank flow path. ... Alstom Technology Ltd

10/01/15 / #20150273428

Oxidation control for improved flue gas desulfurization performance

A system and method for controlling oxidation of sulfites in a slurry. The system includes a tank having an inlet for receiving a slurry used in wet flue gas desulfurization. ... Alstom Technology Ltd

09/24/15 / #20150268121

Probe for measuring pressure oscillations in the combustor of a gas turbine

A probe is provided for measuring high frequent pressure oscillations of hot gases that combines redundancy of the output signals with high quality of the output signals.. . ... Alstom Technology Ltd

09/24/15 / #20150267918

Combustion chamber with cooling sleeve

The invention refers to a combustion chamber having a sleeve section which is at least partly enclosing a duct wall for guiding a cooling gas in a channel between the sleeve section and the duct wall along the outer surface of the duct wall. The sleeve section has one main inlet opening facing away from the duct wall wherein the cross sectional area of the main inlet opening is larger than 70% of the sum of the cross sections of all cooling openings to the sleeve section. ... Alstom Technology Ltd

09/24/15 / #20150267563

Tool for removing an inner casing from a turbomachine

A tool for installing or uninstalling a segment of an inner housing of a turbomachine. The turbomachine includes an outer housing, at least partially surrounding an inner housing and a rotor, concentrically arranged within the inner housing. ... Alstom Technology Ltd

09/24/15 / #20150267562

Pullable drawer for a turbine and turbine with such a drawer

The invention is related to a pullable drawer for removably protruding in a radial direction into an outer housing of a turbine, in order to make mechanical contact with an inner carrier being concentrically arranged within said outer housing. The pullable drawer has an essentially cylindrical body, which extends along a longitudinal drawer axis. ... Alstom Technology Ltd

09/24/15 / #20150267561

Turbomachine and method for disassembling such a turbomachine

A turbine includes an outer casing and an inner casing surrounded by said outer casing. The outer casing and inner casing are coaxially arranged with respect to a machine axis. ... Alstom Technology Ltd

09/24/15 / #20150267557

Airfoil portion of a rotor blade or guide vane of a turbo-machine

An airfoil portion including an outer wall that defines a cavity for receiving cooling air. The airfoil portion includes a leading edge that resides in an upstream direction, a trailing edge that resides in a downstream direction, a convex suction side, and a concave pressure side. ... Alstom Technology Ltd

09/24/15 / #20150267549

Turbine vane with cooled fillet

The disclosure pertains to a vane comprising a platform and airfoil extending form said platform and connected to the platform by a fillet. An impingement tube is inserted into said airfoil delimiting a cooling channel between the impingement tube and the side walls. ... Alstom Technology Ltd

09/24/15 / #20150267542

Rotor shaft with cooling bore inlets

The invention relates to a rotor shaft adapted to rotate about a rotor axis thereof. The rotor shaft includes a rotor cavity configured concentrically or quasi-concentrically to the rotor axis inside the rotor shaft, and a plurality of cooling bores extending radially or quasi-radially outward from the inside to an outside of the rotor shaft. ... Alstom Technology Ltd

09/24/15 / #20150267538

Steam turbine with resonance chamber

A steam turbine with a resonance chamber in the outer annulus opposite a rotating blade row. The resonance chamber provides passive resonance to place the excitation at a frequency away from the natural frequency of the blades.. ... Alstom Technology Ltd

09/24/15 / #20150265993

Rotary bottom ash regeneration system

A rotary bottom ash regenerating (rbar) system [100] comprises a cylindrical body [110] that receives ash [17] containing reactant particles [10] that are partially reacted limestone compounds having unreacted cores [13] from a furnace. Sensors [140] sense physical parameters within the cylindrical body [110]. ... Alstom Technology Ltd

09/17/15 / #20150263594

Tool and a method for the assembly of a generator

The present disclosure relates to the technical field of tools for generators or machines and to methods for assembling parts to electrical generators or machines by means of tools. Objects of the invention are to ensure an easy, safe, and time-consuming assembly of an inner enclosure to a generator or a machine. ... Alstom Technology Ltd

09/17/15 / #20150263365

Fuel cell system and operating method

A fuel cell system comprises a fuel cell main body containing a fuel cell having an anode side at which fuel is reacted, exhaust products arising at the anode side of the fuel cell as a result of the reaction at the anode side. A recirculation passage is located inside the fuel cell main body and recirculates a proportion of the exhaust products directly to the anode side of the fuel cell for reaction at the anode side. ... Alstom Technology Ltd

09/17/15 / #20150258629

Process for welding pipe connections for high temperature applications

A process for welding pipe connections for high temperature applications, particularly in power plants, including a first pipe section and a second pipe section. The first pipe section is made of a ferritic material having a first coefficient of thermal expansion. ... Alstom Technology Ltd

09/10/15 / #20150253008

Arrangement of a combustion system and a flue gas treatment system, and an injection method

In the arrangement of a combustion system and a flue gas treatment system, the combustion system including a combustion chamber with at least an injector, a gas supply line connected to the at least an injector, a fuel supply line connected to the at least an injector. The gas supply line is connected to a source of compressed gas containing co2.. ... Alstom Technology Ltd

09/10/15 / #20150251548

Dispatching vehicle-to-grid ancillary services with discrete switching

Techniques for controlling dispatch of electric vehicles (evs) to perform vehicle-to-grid regulation of power of an electric grid are presented. An aggregator component can individually control transitioning respective evs of a set of evs between a charging state and a not-charging state. ... Alstom Technology Ltd

09/03/15 / #20150247426

Acoustic damping device for chambers with grazing flow

An acoustic damping device is provided which includes at least one opening for a sealing gas to deflect a grazing gas flow away from the mouth of an acoustic damper.. . ... Alstom Technology Ltd

09/03/15 / #20150246312

Apparatus and method for integrating desulfurization and carbon dioxide capture

An method of operating a plant includes the steps of feeding a reagent to a direct contact heating device (32) for removing ammonia from fluid fed to the direct contact heating device (32), feeding water to the direct contact heating device (32) to contact the fluid after the fluid is contacted with the reagent fed to the direct contract heating device (32), and feeding the water from the direct contact heating device (32) to a water wash tower (20) that is downstream of a carbon dioxide absorber (14) configured to use ammonia to remove carbon dioxide from fluid fed therein. The water wash tower (20) can be configured to remove ammonia from the fluid fed therein prior to that fluid being fed to the direct contact heating device (32). ... Alstom Technology Ltd

08/27/15 / #20150240792

Solar thermal power system

A solar thermal power system includes a solar receiver, and a thermal energy storage arrangement having thermal energy storage fluid to be circulated through the solar receiver to store thermal energy. The system includes a multistage steam turbine operable on variable pressure steam generated by a steam generator arrangement, by utilizing the thermal energy storage fluid. ... Alstom Technology Ltd

08/27/15 / #20150239744

Arrangement and process for integrated flue gas treatment and soda ash production

The arrangement of a flue gas treatment system by carbonation-calcination loop and soda ash production system by solvay process has cao and heat for use in the soda ash production system extracted from the flue gas treatment system.. . ... Alstom Technology Ltd

08/27/15 / #20150238890

Fabric filter system and method for cleaning the same

The invention relates to a fabric filter system, having a first fabric filtering device in the form of elongated tubular fabric bag; a first gas tank for providing compressed gas; a first pulsing gas duct fluidly connected between the first fabric filtering device and the first gas tank through a first pulsing valve for cleaning the first fabric filtering device. The fabric filter system further includes a second gas tank for providing compressed gas. ... Alstom Technology Ltd

08/20/15 / #20150236498

Circuit interruption device

An extinguishing branch (28) for an electrical circuit (32) includes: a snubber circuit (36) including an energy storage limb (40), wherein the energy storage limb (40) includes first and second energy storage limb portions separated by a first junction (46) to define a first voltage divider, and each energy storage limb portion includes at least one energy storage device (48,50); and an arrester limb (38) connected across the energy storage limb (40), wherein the arrester limb (38) includes first and second arrester limb portions separated by a second junction (52) to define a second voltage divider, and each arrester limb portion includes at least one arrester element (54,56), wherein the first and second junctions (46,52) are connected to define a voltage divider bridge, and the voltage divider bridge is electrically coupleable to the electrical circuit (32) so as to provide, in use, a driving voltage to drive the electrical circuit (32).. . ... Alstom Technology Ltd

08/20/15 / #20150233587

Heat exchanger and method for demisting

The heat exchanger includes a case with at least a case inlet and at least a case outlet. A separation structure located within the case defines a first section and a second section. ... Alstom Technology Ltd

08/13/15 / #20150229121

Circuit interruption device

A switching device (28) comprising a primary switching block (30) including at least one semiconductor switch (34); and a switching control unit (32) to control the switching of the or each semiconductor switch (34). The switching device further includes a crowbar circuit (46) comprising a crowbar switch (56) switchable to selectively allow current to flow through the crowbar switch (56) in order to bypass the or each switching module; and a secondary switching block including a switching element (58) connected across a control electrode and a cathode of the crowbar switch (56). ... Alstom Technology Ltd

08/13/15 / #20150228375

Medium-or high-voltage electrical appliance having a low environmental impact and hybrid insulation

The present invention relates to medium- or high-voltage equipment having low environmental impact, including a leaktight enclosure in which there are located electrical components covered with a solid dielectric layer of varying thickness and a gaseous medium for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, and that comprises heptafluoroisobutyronitrile in a mixture with a dilution gas.. . ... Alstom Technology Ltd

08/13/15 / #20150226431

Igniter lance and method for operating a burner having said igniter lance

The igniter lance include a lance fuel duct for pulverised fuel and an electric igniter for ignition of the pulverized fuel passing through the lance fuel duct.. . ... Alstom Technology Ltd

08/13/15 / #20150226187

Solar thermal power system

A solar thermal power system includes a solar receiver and a thermal energy storage arrangement including thermal energy storage fluid to be circulated through the solar receiver to store thermal energy. The system includes a multistage steam turbine operable on variable pressure steam generated by primary and secondary arrangements, by utilizing the fluid. ... Alstom Technology Ltd

08/13/15 / #20150226122

Sequential combustion with dilution gas mixer

The invention refers to a sequential combustor arrangement including a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer includes a plurality of injection pipes pointing inwards from the side walls of the mixer for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber with a low pressure drop. ... Alstom Technology Ltd

08/13/15 / #20150226092

Method for operating a combined cycle power plant

A method for operating a combined cycle power plant is disclosed, which has a gas turbine installation and a water-steam cycle connected to the gas turbine installation by a waste heat steam generator and has at least one steam turbine, the gas turbine installation includes a compressor, a combustion chamber, and a turbine. To cool the turbine, air compressed at the compressor is removed, cooled in at least one cooler flowed through by water, thus generating steam, and introduced into the turbine. ... Alstom Technology Ltd

08/06/15 / #20150218954

Composite turbine blade for high-temperature applications

A composite turbine blade for high-temperature applications such as gas turbines or the like includes a root for mounting the blade in a corresponding circumferential assembly groove of a rotor and an airfoil connected to said root. An inner carrying structure is provided extending at least over a portion of the root as well as at least a portion of said airfoil. ... Alstom Technology Ltd

07/30/15 / #20150214834

Converter for hvdc transmission and reactive power compensation

A power electronic converter for use in high voltage direct current power transmission and reactive power compensation comprises a plurality of switching elements interconnecting in use a dc network and one or more ac networks, the plurality of switching elements being controllable in use to facilitate power conversion between the ac and dc networks, wherein in use, the plurality of switching elements are controllable to form one or more short circuits within the power electronic converter so as to define one or more primary current flow paths, the or each primary current flow path including a respective one of the ac networks and the power electronic converter and bypassing the dc network.. . ... Alstom Technology Ltd

07/30/15 / #20150209725

Mercury re-emission control

A method for reducing mercury emission and/or re-emission in cleaned flue gas through control of dissolved mercury species concentration within a wet flue gas desulfurization (wfgd) system is disclosed. One method for reducing mercury emission and/or re-emission through control of dissolved mercury species concentration is to measure the dissolved mercury species concentration of an aqueous alkaline slurry used in a wfgd system and/or measuring mercury concentration of cleaned flue gas from a wfgd system and comparing the same to a predetermined dissolved mercury species concentration value and/or a predetermined mercury concentration value. ... Alstom Technology Ltd

07/23/15 / #20150207373

Damper finger segment

A damper finger segment is radially disposed between a retaining ring and a damper ring arrangement at a rotor end of a generator arrangement, in particular of a high power turbogenerator, having a multitude of plate-like finger elements with a longitudinal extension and arranged parallel to each other. Each neighboring pair of finger elements encloses a gap and all finger elements are joined at one end of each finger element by a band-like strip section having a longitudinal extension being oriented orthogonally to the longitudinal extension of the finger elements. ... Alstom Technology Ltd

07/23/15 / #20150204247

Method of operating a gas turbine assembly and the gas turbine assembly

The invention relates to a method of operating a gas turbine assembly, which includes a compressor, a combustor and a gas turbine. The method includes operating the gas turbine assembly at a partial load with respect to a base load of the gas turbine assembly; bypassing a portion of blow-off air from the compressor; and introducing the portion of blow-off air into an exhaust gas duct after the gas turbine. ... Alstom Technology Ltd

07/16/15 / #20150198392

Heat exchnager effluent collector

A gas to gas heat exchanger 110 equipped with heat transfer element cleaning system 160, effluent collector hopper 162 and effluent collector hopper cleaning system 164 is provided. The heat transfer element cleaning system 160 is useful to remove accumulated substances from heat exchanger 110 heat transfer elements 134. ... Alstom Technology Ltd

07/16/15 / #20150198334

Sequential combustion arrangement with dilution gas

The invention refers to a sequential combustor arrangement including a first combustor with a first burner for admitting a first fuel into a combustor inlet gas during operation and a first combustion chamber for burning the first fuel, a dilution gas admixer for admixing a dilution gas to the first combustor combustion products leaving the first combustion chamber, and a second burner for admixing a second fuel and a second combustion chamber. To assure good mixing over a wide operating range, the ratio of the pressure loss of the first combustor to the pressure loss of the dilution gas admixer is in the range of 1 to 6. ... Alstom Technology Ltd

07/16/15 / #20150198063

Cooled stator heat shield

The present invention provides a stator heat shield for a gas turbine. The gas turbine includes a rotor defining an axis of rotation. ... Alstom Technology Ltd

07/16/15 / #20150198052

Method for manufacturing a metallic or ceramic component by selective laser melting additive manufacturing

The invention refers to a method for selective laser melting additive manufacturing a three-dimensional metallic or ceramic article/component entirely or partly. The method includes successively building up said article/component layer by layer directly from a powder bed of a metallic or ceramic base material by means of remelting the layers with a high energy laser beam, moving repetitively across the areas, which are to be solidified. ... Alstom Technology Ltd

07/16/15 / #20150196869

Spray dryer absorber vibrator device and method

A spray dryer absorber operative for removing gaseous pollutants from a hot process flue gas and a vibrator device for removing accumulated deposits therefrom is provided. The spray dryer absorber includes a spray dryer chamber equipped with a plurality of dispersers and atomizers mounted at a roof of the spray dryer chamber. ... Alstom Technology Ltd

07/09/15 / #20150194806

Disconnector for high voltage

A disconnector for high voltage, including columnar supporting elements which are electrically isolating and are adapted to support electromechanical elements of opening and closing a circuit or an electrical line. At least one columnar supporting element, which is tubular, supports an optical current transformer, the optical fiber of which, surrounded by protection elements, extends inside the tubular columnar supporting element.. ... Alstom Technology Ltd

07/02/15 / #20150184514

Method for repairing a single crystal turbine blade

A method is provided for repairing a single crystal turbine blade, which includes an airfoil with a tip having a tip cover plate, tip cooling air holes and a tip crown. The method includes removing the tip crown by manual grinding, thereby preserving the underlying tip cover plate; preparing the tip cooling air holes by manual grinding; closing said prepared tip cooling air holes by manual welding; and building-up a new tip crown by a lmf (laser metal forming) process.. ... Alstom Technology Ltd

07/02/15 / #20150182910

Apparatus and method for evaporating waste water and reducing acid gas emissions

An apparatus for evaporating waste water and reducing gas emissions includes an evaporator device (7, 31) configured to receiving a portion of flue gas emitted from a boiler unit (1) and waste water to directly contact the flue gas with the waste water to cool and humidify the flue gas and to dry solid particulates within the waste water. In some embodiments, the waste water may be a component of a mixture formed by a mixer device (25) prior to being contacted with the flue gas to humidify and cool the flue gas and dry solids within the waste water. ... Alstom Technology Ltd

06/25/15 / #20150180231

Current flow controller

A current flow controller (10) comprising: a plurality of terminals (12a, 12b, 14a, 14b) for connection, in use, to a plurality of dc power transmission medium (16,18) such that each dc power transmission medium (16,18) is connected to at least one of the plurality of terminals (12a, 12b, 14a, 14b); and a current flow control unit interconnecting the plurality of terminals (12a, 12b, 14a, 14b), the current flow control unit including a plurality of current flow control sub-units (20, 22, 23) each of which is, in use, connected to a respective dc power transmission medium (16, 18), each current flow control sub-unit (20, 22, 23) including at least one switching element (24, 28), the or each switching element (24, 28) of each current flow control sub-unit (20, 22, 23) being connected to the same energy storage device (26; 56) to selectively provide a voltage source, and a switching control unit (100) to control switching of each switching element (24, 28) of the current flow control unit to selectively inject a voltage drop (v1, v2), in use, into each dc power transmission medium (16,18) so as to simultaneously regulate current flow (i1, i2) in each dc power transmission medium (16, 18) and divert energy from at least one dc power transmission medium (16, 18) into at least one other dc power transmission medium (16, 18) via the current flow control unit.. . ... Alstom Technology Ltd

06/25/15 / #20150176878

System and method for evaporator outlet temperature control

Exemplary embodiments are directed to systems and methods for controlling an outlet temperature of an evaporator having a plurality of evaporator tube bundles, in which a processor is configured to compute an outlet temperature setpoint for the evaporator based on outlet temperatures of each of the plurality of evaporator tube bundles. The processor also regulates fluid flow through at least one of the evaporator tube bundles to reduce deviation between the outlet temperature of the evaporator and the outlet temperature setpoint for the evaporator.. ... Alstom Technology Ltd

06/25/15 / #20150176863

Solar receiver

A solar receiver, designed to use a heat transfer medium, includes a plurality of panels. Each panel is arranged and configured to enable the heat transfer medium to flow in at least one flow direction, one flow direction defining a pass, to obtain unique mass flux in each pass to optimize the heat flux capability of the pass while minimizing pressure drop across the selected passes of the heat transfer surface. ... Alstom Technology Ltd

06/25/15 / #20150176842

Method for operating a combustor for a gas turbine and combustor for a gas turbine

The invention provides a new path of combustion technology for gas turbine operation with multifuel capability, low emissions of no and co and high thermal efficiency. Further to the present invention providing a method for operating a combustor for a gas turbine and a combustor for a gas turbine are disclosed. ... Alstom Technology Ltd

06/25/15 / #20150176424

Seal system for a gas turbine

The invention pertains to a seal system for a passage between a turbine stator and a turbine rotor, including: a first arm extending radially outwards from the turbine rotor and toward the first seal arranged on the stator, and terminating short of the first seal thereby creating a first gap between the first seal and the first arm. The seal system further includes a second seal arranged on the turbine stator, and a second arm extending axially from the turbine rotor towards the second seal base, and terminating short of the second seal thereby creating a second gap between the second seal and the second arm. ... Alstom Technology Ltd

06/25/15 / #20150176412

Rotor blade and guide vane airfoil for a gas turbine engine

The invention refers to a rotor blade or guide vane airfoil for a gas turbine engine having a longitudinal axis and a source of cooling fluid. The airfoil has a pressure wall, a suction wall, a leading edge, a trailing edge and at least one cooling fluid flow passage. ... Alstom Technology Ltd

06/18/15 / #20150165367

Combustion system and combustion method

The combustion system includes a boiler and a flue gas treatment system downstream of the boiler. The flue gas treatment system includes a desulphurization unit, a carbonator and a calciner defining a carbonator/calciner loop. ... Alstom Technology Ltd

06/11/15 / #20150159876

Sequential combustion with dilution gas mixer

The invention refers to a sequential combustor arrangement comprising a first burner, a first combustion chamber, a mixer for admixing a dilution gas via a dilution gas inlet to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The sequential combustor arrangement further includes four cooling zones with a cooling channel. ... Alstom Technology Ltd

06/11/15 / #20150159870

Combustion device for a gas turbine

A combustion device (1) for a gas turbine includes portions (12) having an inner and an outer wall (13, 14) with an interposed noise absorption plate (15) having a plurality of holes (16). The combustion device (1) further has first passages (17) connecting zones between the inner wall (13) and the plate (15) to the inside of the combustion device (1) and second passages (21) for cooling the inner wall (13). ... Alstom Technology Ltd

06/11/15 / #20150159490

Internally cooled airfoil for a rotary machine

The invention refers to an internally cooled casted airfoil for a rotary machine, preferably a gas turbine engine comprising a suction and a pressure side wall each extending in an axial direction, i.e. From a leading to a trailing edge region of said airfoil. ... Alstom Technology Ltd

06/04/15 / #20150155090

Transformer

A transformer (30) comprises: first and second printed circuit board substrates, the first printed circuit board substrate (32) including at least one first substrate layer (34) having a dielectric relative permittivity of less than or equal to 3.5 and the second printed circuit board substrate including at least one second substrate layer (70) having a dielectric relative permittivity that is higher than the dielectric relative permittivity of the or each first substrate layer (34); and a plurality of electrically conductive traces, at least one electrically conductive trace being patterned on a surface of the first substrate layer (34) or one of the first substrate layers (34) to form a second winding portion (52) and at least one other electrically conductive trace being patterned on a surface of the second substrate layer (70) or one of the second substrate layers (70) to form a first winding portion (50), the first and second winding portions (50,52) defining mutually coupled first and second windings, wherein the first winding is formed by one or more first winding portions (50), the second winding is formed by one or more second winding portions (52), the second winding is formed on the first substrate layer (34) or at least one of the first substrate layers (34), and the first winding is formed on the second substrate layer (70) or at least one of the second substrate layers (70).. . ... Alstom Technology Ltd

06/04/15 / #20150152898

Device for emergency operation of actuators

A device for emergency operation of pneumatic or hydraulic actuators. For normal operation of the actuator, an operation cycle includes at least a proportional valve for switching to different operational conditions of the actuator and related engine components. ... Alstom Technology Ltd

05/28/15 / #20150147237

Dry scrubber system with low load distributor device

An air quality control system (aqcs) 14 useful for treating flue gas fg, such as flue gas fg produced by a fossil fuel fired boiler 12 is described. The aqcs 14 is equipped with a dry scrubber low load distributor device 66. ... Alstom Technology Ltd

05/28/15 / #20150144293

Heat transfer elements for a closed channel rotary regenerative air preheater

A closed channel rotary regenerative air preheater 110 employs differing heat transfer elements 186, 196, arranged in an alternating order to impart turbulence in fluid flowing in closed channels or passageways 164 between the heat transfer elements 186, 196, to maintain heat transfer properties with reduced pressure drop.. . ... Alstom Technology Ltd

05/28/15 / #20150144247

Method for manufacturing winding parts for an electric machine

The disclosure refers to a method for manufacturing winding parts for an electric machine. The winding parts include a conductor and insulation around it. ... Alstom Technology Ltd

05/21/15 / #20150136045

Evaporator apparatus and method of operating the same

A heat exchanger apparatus for receiving water from a steam drum (1) and providing steam and heated unevaporated liquid water to the steam drum includes a first evaporator (evap-1) and a second evaporator (evap-2). The first evaporator can receive water from a steam drum via a first feed conduit (9) and the second evaporator can receive water from a second feed conduit (11). ... Alstom Technology Ltd

05/21/15 / #20150136044

Internally stiffened extended service heat recovery steam generator apparatus

A heat recovery steam generator (“hrsg”) includes a first casing having an interior enclosing at least one duct for gas to flow therein along a gas flow axis. Each duct is defined by duct defining members that are spaced apart from each other and extend into the interior of the first casing. ... Alstom Technology Ltd

05/07/15 / #20150122202

Method for managing a shut down of a boiler

The method for managing a shut down of a boiler having a duct and heat exchanging components is provided. The heat exchanging component having tubed heat exchanging surfaces within the duct and headers outside the duct. ... Alstom Technology Ltd

05/07/15 / #20150121892

Gas turbine power plant with flue gas recirculation and catalytic converter

The invention pertains to a power plant including a gas turbine, a heat recovery boiler arrangement with at least a boiler inlet, and an outlet side with a first exit connected to a stack and a second exit connected to a flue gas recirculation, which connects the second exit to the compressor inlet of the gas turbine. The heat recovery boiler arrangement includes a first boiler flue gas path from the boiler inlet to the first boiler exit, and a separate second boiler flue gas path from the boiler inlet to the second boiler exit. ... Alstom Technology Ltd

04/30/15 / #20150118019

Impingement cooling arrangement

The present disclosure refers to an impingement cooling arrangement for cooling a duct wall of a duct guiding a hot gas flow. The impingement cooling arrangement includes an impingement sleeve which is at least partly disposed in a compressed air plenum, and spaced at a distance to the duct wall to form a cooling flow path between the duct wall and the impingement sleeve such that cooling air injected from the compressed air plenum through apertures in the sleeve impinges on the duct wall. ... Alstom Technology Ltd

04/30/15 / #20150116881

High voltage dc circuit breaker apparatus

A circuit breaker apparatus for use in high voltage direct current (hvdc) power transmission is provided. The circuit breaker apparatus has one module or a plurality of series-connected modules, the or each module including: first, second, third and fourth conduction paths and first and second terminals for connection to an electrical network, each conduction path extending between the first and second terminals, the first conduction path including a mechanical switching element, the second conduction path including at least one semiconductor switching element, the third conduction path including a snubber circuit having an energy storage device and the fourth conduction path including a resistive element.. ... Alstom Technology Ltd

04/30/15 / #20150116876

Method of fault clearance

There is a method of fault clearance for a dc power grid (10), wherein the dc power grid (10) includes: a plurality of dc terminals (12a,12b,12c,12d); a plurality of dc power transmission media (14a,14b, 14c,14d) to interconnect the plurality of dc terminals (12a, 12b, 12c, 12d); and a plurality of dc circuit interruption device stations (18), each dc circuit interruption device station (18) being associated with a respective one of the plurality of dc power transmission media (14a,14b, 14c, 14d) and a respective one of the plurality of dc terminals (12a, 12b,12c, 12d), each dc circuit interruption device station (18) including a dc circuit interruption device (20) to selectively interrupt current flow in the associated dc power transmission medium (14a, 14b, 14c, 14d), the method comprising the steps of: (i) detecting one or more faults occurring in the plurality of dc power transmission media (14a, 14b, 14c,14d); (ii) after detecting the or each fault, opening all of the dc circuit interruption devices (20) to interrupt current flow in the plurality of dc power transmission media (14a,14b, 14c,14d); (iii) measuring electrical characteristics of each dc power transmission medium (14a, 14b, 14c,14d); (iv) identifying the or each faulty dc power transmission medium (14a, 14b, 14c, 14d), in which the or each fault is located, based on the measured electrical characteristics of the plurality of dc power transmission media (14a, 14b, 14c, 14d); and (v) after identifying the or each faulty dc power transmission medium (14a, 14b, 14c, 14d) in which the or each fault is located, inhibiting closing of the or each dc circuit interruption device (20) that is associated with the or each faulty dc power transmission medium (14a,14b, 14c,14d), in which the or each fault is located, and closing the or each dc circuit interruption device (20) that is associated with the or each non-faulty dc power transmission medium (14a, 14b, 14c, 14d), in which the or each fault is not located.. . ... Alstom Technology Ltd

04/30/15 / #20150114676

Conductor bar with multi-strand conductor element

A conductor bar including a plurality of roebel-transposed conductor elements is disclosed. At least one of the conductor elements possesses a plurality of conductive strands stacked relative to each other. ... Alstom Technology Ltd

04/30/15 / #20150114319

Feedwater preheating system and method

The feedwater preheating system includes a feedwater tank and a constant volume recirculation pump. The feedwater tank is adapted to store the feedwater. ... Alstom Technology Ltd

04/30/15 / #20150113992

Damper for gas turbine

The invention relates to a damper for reducing the pulsations in a chamber of a gas turbine. The damper includes a resonator cavity and a neck in flow communication with the resonator cavity and the chamber. ... Alstom Technology Ltd

04/30/15 / #20150113991

Damping device for a combustor of a gas turbine

The present invention relates to a damping device for a combustor of a gas turbine for suppressing combustion instabilities. More specifically, the invention relates to a design of a broadband damping device for a low emission combustor having at least one resonator for damping pressure fluctuations in the combustion chamber. ... Alstom Technology Ltd

04/30/15 / #20150113990

Helmholtz damper for gas turbine with cooling air flow

A helmholtz damper for a combustor of a gas turbine includes an enclosure defining a damping volume from which a neck portion extends and which has a flow path (f) for cooling and purging air with an inlet opening and an outlet opening to the enclosure. The outlet opening is formed in the neck portion. ... Alstom Technology Ltd

04/30/15 / #20150113939

Combined cycle power plant with improved efficiency

A ccpp includes a gas turbine, a hrsg, a steam turbine a flash tank and first and second supply lines. The gas turbine, the hrsg and the steam turbine are interconnected to generate power. ... Alstom Technology Ltd

04/23/15 / #20150110612

Arrangement for cooling a component in the hot gas path of a gas turbine

The invention relates to a cooled wall segment in the hot gas path of a gas turbine, particularly to a cooled stator heat shield. Such components have to be properly cooled in order to avoid thermal damages of these components and to ensure a sufficient lifetime. ... Alstom Technology Ltd

04/23/15 / #20150109709

Shielding assembly

An electrical field shielding assembly comprises at least one electrically conductive, shielding element (12) that is hingably mounted on the electrical field shielding assembly, wherein the or each shielding element (12) is hingably movable between an open position in which an access opening in the electrical field shielding assembly is created and a closed position in which the access opening in the electrical field shielding assembly is closed.. . ... Alstom Technology Ltd

04/23/15 / #20150108092

Device for actuating the contacts of a circuit breaker, comprising a torsion rod

A circuit breaker has a stationary contact and a movable contact, and an actuator device for actuating it comprises a rigid drive shaft (8) that drives the movable contact, first resilient means for driving the movable contact, and a torsion bar (2) for driving the drive shaft, the torsion bar (2) being suitable for being deformed in twisting in order to assist the resilient means during an initial period while opening the contacts of the circuit breaker. The torsion bar (2) is housed inside the drive shaft (8). ... Alstom Technology Ltd

04/23/15 / #20150108090

Circuit breaker apparatus

A circuit breaker apparatus (32) comprises one module (30) or a plurality of series-connected modules (30), the or each module (30) including: first and second conduction paths (34, 36); and first and second terminals (38, 40) for connection to an electrical network (42), each conduction path (34, 36) extending between the first and second terminals (38, 40); the first conduction path (34) including a first vacuum switching element (52) to selectively close to allow current to flow between the first and second terminals (38, 40) through the first conduction path (34) in a first mode of operation, or open to block current from flowing between the first and second terminals (38, 40) through the first conduction path (34) in a second mode of operation; the second conduction path (36) including a second vacuum switching element (56) to selectively open to block current from flowing between the first and second terminals (38, 40) through the second conduction path (36) in the first mode of operation, or close to allow current to flow between the first and second terminals (38,40) through the second conduction path (36) in the second mode of operation, wherein the first and second vacuum switching elements (34, 36) define a break-before-make switching arrangement; the second conduction path (36) further including a primary energy storage device (74) to oppose current flowing between the first and second terminals (38, 40) through the second conduction path (36) in the second mode of operation; and the or each module (30) further including a commutation circuit (72) to establish a resonant current in the first vacuum switching element to quench an arc current appearing across the first vacuum switching element (52) in the second mode of operation.. . ... Alstom Technology Ltd

04/23/15 / #20150107973

Control of spring(s) type for a high- or medium-voltage breaker furnished with a pawled free wheel coupling device

The invention relates to a spring controller for high- or medium-voltage electric switchgear, the controller having a free-wheel coupling device between a crank handle or a motor and the drive shaft (1) for driving a switch contact of the switchgear and respectively providing coupling while the spring(s) (11) is/are being loaded and decoupling while the spring(s) is/are being released. The free-wheel mechanical device is incorporated in a toothed wheel (2) of the controller and includes at least one pawl (7, 70) meshing or not meshing with an inner set of teeth (4) of the toothed wheel (2).. ... Alstom Technology Ltd

04/23/15 / #20150107262

Combustor cooling structure

The invention refers to a transition piece of a combustor of a gas turbine including an impingement cooling zone, a sequential disposed liner having at least one cooling arrangement and a closing plate with respect to the sequential disposed liner. The sequential disposed liner has a cooling channel structure. ... Alstom Technology Ltd

04/23/15 / #20150107259

Gas turbine with sequential combustion arrangement

The present disclosure refers to a method for operating a gas turbine with sequential combustors having a first-burner, a first combustion chamber, and a second combustor arranged sequentially in a fluid flow connection. To minimize emissions and combustion stability problems during transient changes when the fuel flow to a second combustor is initiated the method includes the steps of increasing the second fuel flow to a minimum flow, and reducing the first fuel flow to the first-burner of the same sequential combustor and/or the fuel flow to at least one other sequential combustor of the sequential combustor arrangement in order keep the total fuel mass flow to the gas turbine substantially constant. ... Alstom Technology Ltd

04/23/15 / #20150107258

Gas turbine with flexible air cooling system and method for operating a gas turbine

A gas turbine for a gas and steam turbine plant and method for operating a gas turbine is provided. The gas turbine includes a cooling system for cooling inlet air taken from compressor extractions or compressor discharge and introduced to the turbine(s) and/or combustor(s) of the gas turbine which is adapted for flexible operation in a combined cycle application as well as a simple cycle application. ... Alstom Technology Ltd

04/23/15 / #20150107257

Flushing the exhaust gas recirculation lines of a gas turbine

A method and gas turbine are provided for the reliable purging of an exhaust gas recirculation line of the gas turbine with exhaust gas recirculation without the use of additional blow-off fans. A blow-off flow of the compressor is used for the purging of the exhaust gas recirculation line. ... Alstom Technology Ltd

04/23/15 / #20150107248

Oxy fired power generation system and method of operating the same

An electricity production system configured to operate in accordance with a method of operating an electricity production system that at least includes the steps of: determining an oxygen distribution between oxygen gas to be separated by an air separation unit (“asu”) and oxygen gas stored in a storage tank of the asu to be fed to the boiler unit, determining a carbon capture value for a gas processing unit, determining a power consumption value for the gas processing unit and the asu, determining a total power demand value based on the power consumption value of the gas processing unit and the asu, and on a determined electricity demand, and controlling the boiler unit, the turbine, the asu, and the gas processing unit based on the determined total power demand along with correcting signals generated from a coordinated model predictive control.. . ... Alstom Technology Ltd

04/23/15 / #20150107247

Control system for oxy fired power generation and method of operating the same

A method of operating an electricity production system having at least one oxy-combustion boiler unit and a turbine for electricity generation at least includes the steps of: determining a power demand for an air separation unit that supplies oxygen gas to the boiler unit and a gas processing unit that treats flows of fluid for co2 capture; determining a total power demand for electricity production that includes the determined power demand for the air separation unit and the gas processing unit; and coordinating operation of the air separation unit, gas processing unit, the boiler unit, and the turbine such that power generated by the plant provides power that meets the determined total power demand and also controls steam pressure of the turbine to a pre-specified level.. . ... Alstom Technology Ltd

04/16/15 / #20150102566

Seal between static turbine parts

. . The invention relates to a seal between static components of a turbine. The seal includes at least one middle piece, which has at its opposite ends end pieces. ... Alstom Technology Ltd

04/16/15 / #20150101485

Method and apparatus for wet desulfurization spray towers

A method and apparatus or system is provided for cleaning a flue gas and/or cooling a flue gas with a dispersed finely divided absorption liquid. As such, the absorption liquid is dispersed in a wet scrubber through which flue gas flows for absorption liquid and flue gas intermingling and contact to produce a cleaned flue gas. ... Alstom Technology Ltd

04/16/15 / #20150101341

Method for a part load co reduction operation for a sequential gas turbine

The invention concerns a method for a part load co reduction operation and a low-co emissions operation of a gas turbine with sequential combustion. The gas turbine essentially includes at least one compressor, a first combustor which is connected downstream to the compressor. ... Alstom Technology Ltd

04/16/15 / #20150101332

Combustion chamber of a gas turbine with improved acoustic damping

A combustion chamber of a gas turbine includes an optimized arrangement of acoustic dampers.. . ... Alstom Technology Ltd

04/16/15 / #20150101182

Method for removing bars or coils from slots of an electric machine

The method for removing a bar or coil from a slot of an electric machine includes weakening the bonding between the slot and the bar or coil, and then removing the bar or coil.. . ... Alstom Technology Ltd

04/09/15 / #20150098831

Rotor blade arrangement and gas turbine

A rotor blade arrangement (20), especially for a gas turbine, which can be fastened on a blade carrier (19) and includes in each case a blade aerofoil element (10) and a platform element (14), wherein the platform elements (14) of a blade row form a continuous inner shroud. With such a blade arrangement, a mechanical decoupling, which extends the service life, is achieved by the blade aerofoil element (10) and the platform element (14) being formed as separate elements and by being able to be fastened in each case separately on the blade carrier (19).. ... Alstom Technology Ltd

04/09/15 / #20150098792

Method of operating a turbine engine after flame off

The present invention relates to a method of decelerating a turbine rotor of a turbine engine. At least one electric motor is engaged with the turbine rotor. ... Alstom Technology Ltd

04/09/15 / #20150096929

Filter and method for assembling a nozzle pipe of a filter

The filter includes: a structure with a c-shaped profile defining side walls and nozzle pipes, each connected to the structure. Each nozzle pipe has a longitudinal axis and an end; a plate connected over a border of the nozzle pipe end to close the nozzle pipe. ... Alstom Technology Ltd

04/09/15 / #20150096829

Acoustic damping device

An acoustic damper includes a neck and a damping volume. The neck has a mouth being in fluid connection with a chamber. ... Alstom Technology Ltd

04/02/15 / #20150090074

Method for manufacturing a metallic component by additive laser manufacturing

The invention refers to a method for manufacturing a three-dimensional metallic article/component made of a ni-, co-, fe-based superalloy or combinations thereof, entirely or partly, by a powder based additive manufacturing process. During the step of performing powder melting by scanning a dual laser setup is used, where two laser beams of different beam properties are combined in the same machine and by adjusted beam profiling and integration of a suitable beam switch in a controlled manner a switching between two different laser beam diameters is performed. ... Alstom Technology Ltd

04/02/15 / #20150089956

Method of exhaust gas treatment for a gas turbine system and exhaust gas treatment assembly

The invention relates to a method for operating a gas turbine system, wherein the gas turbine system includes a compressor, a combustor, a heat recovery steam generator, a scrubber, a direct contact cooler. The method includes introducing the scrubbing fluid discharged from the scrubber into the direct contact cooler, contacting the scrubbing fluid in the direct contact cooler with the exhaust gas discharged from the heat recovery steam generator in order to remove a portion of nitrogen oxide therefrom; feeding the exhaust gas discharged from the direct contact cooler into the compressor. ... Alstom Technology Ltd

04/02/15 / #20150089955

Gas turbine with cooling air cooling system and method for operation of a gas turbine at low part load

A gas turbine and method for operating a gas turbine, includes a compressor, a combustor, a turbine and a cooling air cooling system having at least a first cooling air line going from a first bleed of the compressor to the turbine, and at least one second cooling air line at a downstream position of the compressor relative to the first cooling air line. A heat exchanger is arranged in the second cooling air line for cooling the extracted air of higher pressure. ... Alstom Technology Ltd

04/02/15 / #20150089950

Method for determining the temperature inside a combustor

A method for determining the temperature of an aggressive and/or abrasive gas is described using an acoustic transmitter and an acoustic receiver. The transmitter emits an acoustic signal with varying frequencies and the receiver extracts from the acoustic input signal a frequency of the maximum. ... Alstom Technology Ltd

03/26/15 / #20150085531

Nonlinear control device for a dc/dc converter used for conveying hvdc current

. . . . . . The invention relates to a bidirectional multi-level dc/dc converter and its non-linear control, adapted to transfer power between at least one energy source and an electricity distribution network.. . ... Alstom Technology Ltd

03/26/15 / #20150083305

Method for applying heat resistant protection components onto a surface of a heat exposed component

The invention refers to a method for applying heat resistant protection components onto the surface of a heat exposed component. The method including providing at least two separate heat protection components, and joining the at least two separate heat protection components onto their top surface and/or bottom surface and/or at least one side surface by flexible means for obtaining an integrally handable entity. ... Alstom Technology Ltd

03/26/15 / #20150082807

Carrier ring

The invention relates to a carrier ring for a high-pressure gas turbine of a gas turbine plant, which has a high-pressure combustion chamber upstream of the high-pressure gas turbine, a compressor upstream of the high-pressure combustion chamber, a low-pressure combustion chamber downstream of the high-pressure gas turbine, a low-pressure gas turbine downstream of the low-pressure combustion chamber, and a rotor that carries rotor blades for the compressor, for the high-pressure gas turbine, and for the low-pressure gas turbine. The carrier ring carries guide blades and/or heat shields of the high-pressure gas turbine and can be fastened to the high-pressure combustion chamber. ... Alstom Technology Ltd

03/26/15 / #20150082803

Method for operating a combined-cycle power plant with cogeneration, and a combined-cycle power plant for carrying out the method

The invention relates to a method for operation of a combined-cycle power plant with cogeneration, in which method combustion air is inducted in at least one gas turbine, and in which method the exhaust gas emerging from the at least one turbine is passed through a heat recovery steam generator (hrsg) in order to generate steam. The electricity production can be decoupled from the steam production in order to restrict the electricity production while the heat provided by steam extraction remains at a constant level. ... Alstom Technology Ltd

03/26/15 / #20150082801

Gas turbine and method to operate the gas turbine

It is proposed a gas turbine and a method to operate the gas turbine. A fluid is supplied to the gas turbine by means of fluid paths. ... Alstom Technology Ltd

03/26/15 / #20150082753

Device and method for transport and storage

A journal transport and storage device for moving, transporting and storage of a pulverizer journal assembly is provided. The device includes a base and a frame extending from the base defining a shaped configuration to support at least a portion of the pulverizer journal assembly.. ... Alstom Technology Ltd

03/19/15 / #20150079526

Oxy-fired boiler unit and method of operating the same

An oxy-combustion boiler unit is disclosed which includes a furnace for combusting fuel and for emitting flue gas resulting from combustion. The furnace has first, second and third combustion zones, and an air separation unit for separating oxygen gas from air and providing a first portion of the separated oxygen to a first oxidant flow, a second portion to a second oxidant flow, and a third portion of the separated oxygen gas to the first, second, and third zones of the furnace. ... Alstom Technology Ltd

03/19/15 / #20150076382

Butterfly valve arrangement

A butterfly valve with a housing having a bypass passage located within the housing of the valve. The passage extends from the normal flow path through the valve, either side of the butterfly valve plate so as to provide an alternative flow path. ... Alstom Technology Ltd

03/19/15 / #20150076081

Method and apparatus for catalyzing seawater aeration basins

An apparatus and method for producing a catalyst rich seawater useful to catalyze oxidation reactions in a flue gas desulfurization system seawater aeration basin to obtain a treated seawater.. . ... Alstom Technology Ltd

03/19/15 / #20150076079

Method and system for seawter foam control

A system and method for controlling a heavy metal laden foam generated on the surface of effluent seawater during aeration of the effluent seawater in a flue gas desulfurization system associated seawater aeration basin.. . ... Alstom Technology Ltd

03/19/15 / #20150075168

Combustion chamber seal segments equipped wiht damping devices

A strip seal arrangement for turbine components employs acoustic damping. A sealing plate having a front face adjacent a combustion chamber and a back face facing away from a combustion chamber configured to have one or more holes of a predefined cross-sectional area. ... Alstom Technology Ltd

03/12/15 / #20150074470

Non-volatile memory assemblies

A non-volatile memory assembly, for use in a programmable device within a power transmission network, comprises a non-volatile reprogrammable primary memory portion and a secondary memory portion. The non-volatile memory assembly also includes a controller that is configured to direct a programmable device to access data from the secondary memory portion; refresh the data in the primary memory portion with data from the secondary memory portion; and direct the programmable device to access data from the primary memory portion.. ... Alstom Technology Ltd

03/12/15 / #20150073572

Automatic tuning control system for air pollution control systems

An automatic tuning control system and method for controlling air pollution control systems such as a dry flue gas desulfurization system is described. The automatic tuning control system includes one or more pid controls and one or more supervisory mpc controller layers. ... Alstom Technology Ltd

03/12/15 / #20150069867

Electric machine and method for rewinding it

The method for rewinding and electric machine includes removing the original stator bars from the slots, removing the original supports from the slots, and providing new supports into the slots, wherein the new supports defining cooling channels that extend over at least a portion of the slot, providing new stator bars into the slots.. . ... Alstom Technology Ltd

03/05/15 / #20150064083

Injector grid for high and low dust environment selective catalytic reduction systems

A method and an arrangement 22 for supplying and mixing a reducing agent into a flue gas fg flowing through a gas duct 14 and into a selective catalytic reduction (scr) reactor 18 arranged downstream of the arrangement 22. The subject arrangement 22 is useful in both high and low dust environments to mitigate ash and like particulate accumulation on reducing agent nozzles 42 and to provide more uniform reducing agent flow distribution upstream of the scr reactor 18.. ... Alstom Technology Ltd

03/05/15 / #20150064012

Blade of a rotary flow machine with a radial strip seal

The invention refers to a blade of a rotary flow machine including an airfoil having a suction surface and a pressure surface joining each other along a trailing and a leading edge. A radially outward directed airfoil tip and a radially inward directed end joining an inner platform connect the airfoil to a shank at a radial end of the airfoil and providing, at least one shank pocket radially encircled by an axially extending portion of the platform. ... Alstom Technology Ltd

03/05/15 / #20150059345

Simultaneous broadband damping at multiple locations in a combustion chamber

The damper arrangement includes a plurality of interconnected volumes and a plurality of necks for connecting the damper to a combustion chamber at a plurality of contact points. The plurality of necks are connected to the plurality of volumes.. ... Alstom Technology Ltd

02/26/15 / #20150056118

Flue gas stream bypass during selective catalytic reduction in a power plant

A system includes a selective catalytic reactor and a bypass line. The selective catalytic reactor is located downstream of a furnace that generates flue gases. ... Alstom Technology Ltd

02/26/15 / #20150052904

Method for controlling a gas turbine group

The invention relates to a method for controlling a gas turbine group including, a first combustion chamber, a first turbine connected, a second combustion chamber, a second turbine, and a load. The method includes: measuring a temperature tat1 at an outlet of the first turbine; determining a ratio s1r of a fuel mass flow feeding a pilot flame of the first combustion chamber to a total fuel mass flow feeding the first combustion chamber based upon the measured temperature tat1 in accordance with a predetermined mapping table between ratio s1r and temperature tat1; adopting the larger one between the determined ratio s1r and a predetermined booster ratio s1r to be used in the controlling fuel flow feeding the first combustion chamber of the gas turbine group. ... Alstom Technology Ltd

02/19/15 / #20150050160

Rotor shaft for a turbomachine

. . A rotor shaft adapted to rotate about a rotor axis thereof. The rotor shaft includes a rotor cavity configured concentrically to the rotor axis inside the rotor shaft. ... Alstom Technology Ltd

02/19/15 / #20150050140

Intake arrangement in gas turbine power plant

An improved intake arrangement, for a compressor having a compressor blading, includes a manifold divided by a barrier into two sections, to convey, from one section, a flue gas stream, and, from other section, an air stream. Further, the intake arrangement includes a converging section configured to the manifold and extends convergingly to the compressor defining an inlet to the compressor blading. ... Alstom Technology Ltd

02/19/15 / #20150050138

Fixation device for turbine and method for applying fixation

The invention provides a fixation device for a turbine, including a flange mounted on a housing of the turbine and a nut assembly received in the flange to apply fixation to an component inside the housing. The flange is fixed to the housing by a plurality of first bolts and comprises a central threaded hole. ... Alstom Technology Ltd

02/19/15 / #20150050134

Full arc admission steam turbine

The invention relates to a full arc admission steam turbine, which includes a plurality of nozzle boxes for inducing steam, and a plurality of nozzle plates for bearing nozzles, one nozzle plate corresponding to each nozzle box. The steam turbine 100 further includes a plurality of spacer plates corresponding to the plurality of nozzle boxes, wherein the spacer plate is disposed between the nozzle plate and the nozzle box, by which a flow path is formed between the plurality of nozzle boxes and the plurality of the nozzle plates through the plurality of spacer plates to achieve a full arc admission. ... Alstom Technology Ltd

02/19/15 / #20150050079

Shaft coupling assembly and method for coupling shafts

The invention refers to a fluid seal arrangement for constricting a leakage flow directed through a leakage gap bordered by a rotational and a stationary component including at least one nozzle opening in the rotating and/or stationary component facing towards the rotating or stationary component of an opposite side of the leakage gap respectively in order for injecting a liquid or gaseous fluid flow through the nozzle opening into the leakage gap. The at least one nozzle opening is fluidly connected to a cooling channel inside said rotating and/or stationary component, so that said fluid flow emanating at the nozzle opening consists of a cooling fluid of the rotating and/or stationary component exclusively.. The invention provides a coupling assembly for connecting two shafts. A first shaft includes an outward flange on one end thereof with a plurality of first holes extending through the outward flange around an axis of the first shaft. ... Alstom Technology Ltd

02/19/15 / #20150049530

Power electronic converter

A power electronic converter (30), for connecting ac and dc networks (46,44) and transferring power therebetween, comprises: first and second dc terminals (32,34) defining a dc link for connection to a dc network (44); wherein, in use, the dc link has a reversible dc link voltage applied thereacross; at least one converter limb (36) extending between the first and second dc terminals (32,34) and having first and second limb portions (38,40) separated by an ac terminal (42) for connection to an ac network (46), each limb portion (38,40) including at least one rationalised module (52) having first and second sets of series-connected current flow control elements (54) connected in parallel with at least one energy storage device (56), each set of current flow control elements (54) including a primary active switching element to selectively direct current through the energy storage device (56) and a primary passive current check element to limit current flow through the rationalised module (52) to a single direction, the current flow control elements (54) and the or each energy storage device (56) combining to selectively provide a voltage source to synthesise an ac voltage at the ac terminal (42); and a first controller (60) to selectively switch the or each rationalised module (52) in each limb portion (38,40) to control the configuration of the ac voltage at the corresponding ac terminal (42) so as to transfer power from the ac network (46) to the dc network (44) in an ac to dc power transfer mode and to transfer power from the dc network (44) to the ac network (46) in a dc to ac power transfer mode, wherein each limb portion (38,40) includes: one or more secondary passive current check elements (48) to limit current flow through the corresponding limb portion (38,40) to a single direction between the corresponding ac and dc terminals (42,32,34), the or each secondary passive current check element (48) being connected in series with the or each rationalised module (52); or one or more secondary active switching elements that is connected in series with the or each rationalised module (52).. . ... Alstom Technology Ltd

02/19/15 / #20150047366

Operation of gas turbine power plant with carbon dioxide separation

The invention relates to a method for operating a gas turbine power plant, including a gas turbine, a hrsg following the gas turbine, an exhaust gas blower, and a carbon dioxide separation plant which separates the carbon dioxide contained in the exhaust gases and discharges it to a carbon dioxide outlet, the gas turbine, hrsg, exhaust gas blower, and carbon dioxide separation plant being connected by means of exhaust gas lines. According to the method a trip of the gas turbine power plant includes the steps of: stopping the fuel supply, switching off the exhaust gas blower, and controlling the opening angle of a vigv at a position bigger or equal to a position required to keep a pressure in the exhaust gas lines between the hrsg and the exhaust gas blower above a minimum required pressure. ... Alstom Technology Ltd

02/19/15 / #20150047365

Sequential combustion with dilution gas mixer

The invention refers to a sequential combustor arrangement including a first burner, a first combustion chamber, a dilution burner for admixing a dilution gas and a second fuel via a dilution-gas-fuel-admixer to the first combustor combustion products. The dilution-gas-fuel-admixer has at least one streamlined body which is arranged in the dilution burner for introducing the at least one second fuel into the dilution burner through at least one fuel nozzle, and which has a streamlined cross-sectional profile and which extends with a longitudinal direction perpendicularly or at an inclination to a main flow direction prevailing in the dilution burner. ... Alstom Technology Ltd

02/19/15 / #20150047364

Burner arrangement and method for operating a burner arrangement

The invention relates to a burner arrangement for using in a single combustion chamber or in a can-combustor comprising a center body burner located upstream of a combustion zone, an annular duct with a cross section area, intermediate lobes which are arranged in circumferential direction and in longitudinal direction of the center body. The lobes being actively connected to the cross section area of the annular duct, wherein a cooling air is guided through a number of pipes within the lobes to the center body and cools beforehand at least the front section of the center body based on impingement cooling. ... Alstom Technology Ltd

02/19/15 / #20150047314

Intake arrangement in gas turbine power plant

An intake arrangement for a compressor in a gas turbine power plant includes at least a passageway having an elongated portion, and a circular portion at an end of the elongated portion. The circular portion may be arranged in proximity to the compressor at around a compressor inlet. ... Alstom Technology Ltd

02/19/15 / #20150047313

Combustor of a gas turbine with pressure drop optimized liner cooling

A design for an effectively cooling a liner of a gas turbine combustor by means of convective cooling is disclosed.. . ... Alstom Technology Ltd

02/12/15 / #20150041434

Method for separating a metal part from a ceramic part

The invention relates to a method for separating a metal part from a ceramic part, which are joined at a connecting face within a modular hybrid component, especially of a gas turbine. The method includes said component being subjected to a reducing atmosphere in a gaseous process at elevated temperatures to dissolve the connection between said metal part and said ceramic part, especially by dissolving the ceramic part itself.. ... Alstom Technology Ltd

02/12/15 / #20150040573

Gas turbine with improved part load emissions behavior

In a method for the low-co emissions part load operation of a gas turbine with sequential combustion, the opening of the row of variable compressor inlet guide vanes is controlled depending on the temperatures of the operative burners of the second combustor and simultaneously the number of operative burners is kept at a minimum. This leads to low co emissions at partial load of the gas turbine.. ... Alstom Technology Ltd

02/05/15 / #20150037167

Turbine blade and turbine with improved sealing

The disclosure pertains to a turbine with a gas turbine blade and a rotor heat shield for separating a space region through which hot working medium flows from a space region inside a rotor arrangement of the turbine. The rotor heat shield includes a platform which forms an axial heat shield section and which is arranged substantially parallel to the surface of a rotor and a radial heat shield section at the upstream end of the axial heat shield section, which is extending in a direction away from the surface of the axial heat shield section towards the hot gas. ... Alstom Technology Ltd

02/05/15 / #20150035364

Control circuit

A control circuit (20) comprising: first and second terminals (22,24) for respective connection to first and second power transmission lines (26,28); a current transmission path extending between the first and second terminals (22,24) and having first and second current transmission path portions (30,32) separated by a third terminal (34), either or both of the first and second current transmission path portions (30,32) including at least one module (36), the or each module (36) including at least one energy storage device; an auxiliary terminal (42) for connection to ground or the second power transmission line (28); an energy conversion block for removing energy from the power transmission lines (26,28), the energy conversion block extending between the third and auxiliary terminals (34,42) such that the energy conversion block branches from the current transmission path, the energy conversion block including at least one energy conversion element (44); and a control unit (46) which selectively removes the or each energy storage device from the current transmission path.. . ... Alstom Technology Ltd

02/05/15 / #20150035176

Direct contact condenser

An apparatus for condensing steam is described including at least two chambers with a first chamber operated as co-current flow condensing chamber and a second chamber operated as counter-current flow condensing chamber with the co-current flow condensing chamber including a cooling liquid distribution system with a plurality of channels arranged above a plurality of film carriers having flat surface areas to carry films of cooling liquid.. . ... Alstom Technology Ltd

01/29/15 / #20150030508

Method and a device for removing nitrogen oxides and sulphur trioxide from a process gas

A catalytic reactor (16) is provided for purposes of effecting therewith the removal of nitrogen oxides from a process gas (f) that includes at least two catalyst bed segments (48, 50, 52), each of which is provided with a closing device (60, 62, 64). The catalytic reactor (16) is operative for causing said process gas (f) to flow through a first catalyst bed segment (48). ... Alstom Technology Ltd

01/29/15 / #20150028826

Control circuit

There is a control circuit comprising first and second dc terminals for connection to a dc network, the first and second dc terminals having a plurality of modules and at least one energy conversion element connected in series therebetween to define a current transmission path, the plurality of modules defining a chain-link converter, each module including at least one energy storage device, the or each energy storage device being selectively removable from the current transmission path to cause a current waveform to flow from the dc network through the current transmission path and the or each energy conversion element and thereby remove energy from the dc network, the or each energy storage device being selectively removable from the current transmission path to modulate the current waveform to maintain a zero net change in energy level of the chain-link converter.. . ... Alstom Technology Ltd

01/29/15 / #20150028701

Stator bar

A stator bar includes a substantially quadrangular conductive element made of a plurality of interwoven strands. The stator bar also includes an electric insulation applied around the conductive element and including a plurality of corners corresponding to corners of the conductive element. ... Alstom Technology Ltd

01/29/15 / #20150028183

Support system for an equipment item on a contrete slab

A support system for an equipment item on a concrete slab includes at least one raised block relative to the slab and of a single piece with the slab. The block includes a metal belt delimiting the vertical walls of the block and a metal support fastened to the belt and capping the block to receive a foot of the equipment item.. ... Alstom Technology Ltd

01/29/15 / #20150028021

Method for processing a modular hybrid component

The invention relates to a method for processing a modular hybrid component having a first part made of a first material and a second part made of a second material, which is different from the first material with regard to its electromagnetic and/or thermal properties. The method including exposing the modular hybrid component to an alternating electromagnetic field, whereby both parts are heated up differently, and that a brazing or soldering joint or field sensitive mineral cement between the first part and the second part is affected by the heating action.. ... Alstom Technology Ltd

01/29/15 / #20150027811

Maintenance assembly adaptable within gas turbine engine

The maintenance assembly, for workers to perform maintenance activities within a gas turbine engine, is capable of being arranged within a cavity, generally around a combustor, accessible from a manhole of the gas turbine engine. The maintenance assembly includes a platform, and an inflatable member cooperatively configured to the platform. ... Alstom Technology Ltd

01/29/15 / #20150027775

Plug and socket pure gas insulated wall bushing for hvdc and uhv

The invention relates to the domains of power electronics and electric power transmission systems and concerns a new structure for wall bushings for high and ultra high voltage ac or dc applications. The wall bushing is remarkable as it can be assembled as a kit of two replaceable modules: a plug type module (20) and a socket type module (30) whose central conductors (15a,15b) are connected by a joint that allows their thermal expansion.. ... Alstom Technology Ltd

01/29/15 / #20150027310

Ammonia stripper for a carbon capture system for reduction of energy consumption

A carbon capture system, such as a chilled ammonia process, is provided that includes with a cooling system, a carbon dioxide absorption system and an ammonia absorption system. The ammonia absorption system includes an absorber column to receive carbon dioxide lean gas stream having ammonia and to receive an absorbent, wherein the absorbent absorbs ammonia from the carbon dioxide lean gas stream to provide an ammonia reduced gas stream and an ammonia rich absorbent. ... Alstom Technology Ltd

01/29/15 / #20150027129

Gas turbine with adjustable cooling air system

In order to improve the cooling of an air-cooled gas turbine in the partial load operating mode it is proposed to provide a connecting line between two cooling air lines with different pressure levels, which connecting line leads from the second cooling air line at a relative high pressure level to the first cooling air line at a relative low pressure level. In this context, a cooling device for cooling an auxiliary cooling air stream, flowing from the second cooling air line into the first cooling air line, and an adjustment element are arranged in the connecting line. ... Alstom Technology Ltd

01/22/15 / #20150023855

Wet scrubber nozzle system and method of use for cleaning a process gas

A wet scrubber (10) useful for cleaning a process gas (f) comprising at least a first spray level system (40) and a second spray level system (48) arranged compactly vertically above the first spray level system (40) in a wet scrubber tower (14). Each spray level system (40, 48) is equipped with a plurality of atomizing flattened relatively wide spray angle nozzles (56) for atomizing an absorption liquid (al) supplied thereto for contact and intermixing with the process gas (f) for removal of environmental pollutants therefrom.. ... Alstom Technology Ltd

01/22/15 / #20150023074

Ac/dc electrical conversion device permitting energy recovery and management of dc-side short-circuits

An ac/dc electrical converter device having a source mode and a recovery mode, and for connection, on the ac side, to an ac voltage source and, on the dc side, to a dc power distribution network. It includes an ac/dc converter, a switching cell with two switches (k1, k2) that are bidirectional for current, the switches sharing a common point (a) and each having a respective end terminal (b1, b2), a filter stage, and a control unit for the cell; the converter is for connection on the ac side to the voltage source and is connected on the dc side to the cell; in use, the first switch (k1) is connected between the converter and the dc power distribution network via the filter stage, the second switch (k2) forming a combination in parallel with the filter stage and the dc power distribution network. ... Alstom Technology Ltd

01/22/15 / #20150020526

Steam power plant with integrated solar receiver

A hybrid steam power plant is disclosed using the steam generator as a sub-construction for a solar receiver.. . ... Alstom Technology Ltd

01/15/15 / #20150017081

High solids flux circulating carbonation reactor

The present invention relates to a method for capturing carbon dioxide co2 by carbonation in a circulating fluidized bed (cfb) carbonation reactor wherein temperature profile is adjusted by recirculation of solid fractions of metal oxide meo and metal carbonate meco3 to the cfb carbonation reactor. Also a system recirculating the metal oxide meo and metal carbonate meco3 is provided by the invention.. ... Alstom Technology Ltd

01/15/15 / #20150017007

Turbine blade or vane

The invention relates to a turbine blade, including a blade having a front edge and a rear edge, which blade transitions by means of a shaft into a blade root designed for fastening the turbine blade, and including a platform, which is arranged at the lower end of the blade in order to bound a flow channel. The platform is designed as a separate component and can be connected to the blade in a form-fit manner. ... Alstom Technology Ltd

01/15/15 / #20150016982

Exhaust diffuser for a gas turbine

An exhaust diffuser for a gas turbine includes an annular duct. A row of struts is arranged in the duct. ... Alstom Technology Ltd

01/15/15 / #20150016964

Gas turbine engine and operations

An improved gas turbine engine is adapted to include an inlet flow control arrangement disposed in an inlet passage at least between a filter member and a row of variable inlet guide vanes (vigv), and adjacent the filter member, to enable pressure loss in the inlet passage and supply reduced amount of inlet air to a compressor to enable the reduction of power output of the gas turbine engine at a low load condition.. . ... Alstom Technology Ltd

01/15/15 / #20150014279

Device for protection against particles generated by an electric switching arc

A protection device for providing protection against the particles generated by an electric arc when a first electrically conductive part and a second electrically conductive part of an electrical connection unit are separated from each other, the protection device including at least one protection element disposed in the proximity of the place at which the first part and the second part separate in order to form a shield against the particles.. . ... Alstom Technology Ltd

01/15/15 / #20150013852

Method for manufacturing components made of single crystal (sx) or directionally solidified (ds) nickelbase superalloys

The invention relates to a method for manufacturing a component, especially of a gas turbine, made of a single crystal (sx) or directionally solidified (ds) nickelbase superalloy, including a heat treatment and a machining and/or mechanical treatment step. The ductility of the component is improved by doing the machining and/or mechanical treatment step prior to said heat treatment and a solution heat treatment of the component is done prior to the machining/mechanical treatment step.. ... Alstom Technology Ltd

01/15/15 / #20150013775

Flue gas conditioning system and method

Disclosed are a system (100) and a method (200) for being utilized in an industrial plant (10) for determining injection rate of at least one flue gas conditioning agent (fgca) from a fgca discharge unit (18) into a flue gas leading from a boiler (12) to be introduce into an electrostatic precipitator (esp) (14) of an industrial plant (10). The system (100) and method (200) is capable of determining the optimal injection rate of the fgca based on esp (14) data to increase the efficiency of the esp (14) for efficient collection of dust particles from the flue gas stream.. ... Alstom Technology Ltd

01/15/15 / #20150013343

Method and device for safely operating a gas turbine plant

A method and a device are disclosed for the safe operation of a gas turbine plant, whose operation is both controlled by at least one process controller, which at least triggers and/or influences operationally relevant processes of the gas turbine plant, and is also monitored by a separate protection unit that is operated independently of the process controller on the basis of at least one first limit value for a safety-relevant operating parameter, wherein the gas turbine plant is subjected to an emergency switch-off once the at least one first limit value is exceeded. In that in the case of a defined transient operating state of the gas turbine plant that can be detected by the protection unit, the at least one first limit value of the safety-relevant operating parameter is raised to a second limit value, wherein the gas turbine plant is protected by an emergency switch-off of the gas turbine plant once said second limit value is exceeded. ... Alstom Technology Ltd

01/15/15 / #20150013339

Mixing arrangement for mixing a fuel with a stream of oxygen containing gas

The invention relates to a mixing arrangement for mixing a fuel with a stream of oxygen containing gas flowing along an axis in an axial channel, especially in the second combustor of a gas turbine with sequential combustion. The mixing is improved and the mixing length reduced by said mixing arrangement comprising an injector with at least one injector ring, which is passed by said stream of gas inside and outside.. ... Alstom Technology Ltd

01/08/15 / #20150010454

Treatment system and method for a flue gas from a combustion process

The treatment system for a flue gas from a combustion process includes a condenser, a compressor for compressing the flue gas deprived of moisture at the condenser, a no2 scrubber column supplied with the compressed flue gas from the compressor, a liquid supply line for supplying liquid condensed at the condenser to the no2 scrubber column, and a liquid recirculation line for recirculating liquid from the no2 scrubber column to the condenser.. . ... Alstom Technology Ltd

01/08/15 / #20150010389

Pressure casing of a turbomachine

The invention relates to a pressure casing, which includes a plurality of casing shells which are connected in a pressure-tight manner in a parting plane by means of a flange. The casing shells are pressed together with sealing effect in the parting plane in the region of the flange by means of at least one threaded bolt which extends in a through hole through the flange perpendicularly to the parting plane. ... Alstom Technology Ltd

01/08/15 / #20150009594

Control circuit

The control circuit includes first and second primary terminals for connection to a dc network, a secondary terminal connected in series between the first and second primary terminals and at least one auxiliary energy conversion element and an auxiliary terminal. The first and second primary terminals have a plurality of modules and a plurality of primary energy conversion elements connected in series therebetween to define a current transmission path, each module including at least one energy storage device, each energy storage device being selectively removable from the current transmission path. ... Alstom Technology Ltd

01/08/15 / #20150007579

Method for operating a combined cycle power plant and combined cycle power plant for using such method

The invention discloses a method for operating a combined cycle power plant with an integrated co2 capture unit, wherein flue gas of a gas turbine is led along an flue gas path through a heat recovery steam generator, a flue gas cooling circuit and a co2 absorber. A reduction in effort is achieved by operating the gas turbine to have a back-pressure at its exit, which compensates most or all of the pressure loss of the flue gas along the flue gas path.. ... Alstom Technology Ltd

01/08/15 / #20150007578

Method for operating a combined cycle power plant and combined cycle power plant for conducting said method

The invention relates to a method for operating a combined cycle power plant, which includes a steam turbine powertrain with a high-pressure steam turbine, an intermediate pressure steam turbine and a low-pressure steam turbine, whereby intermediate pressure steam flowing from the exit of the high-pressure steam turbine to the inlet of the intermediate pressure steam turbine is reheated by means of the reheat device, and which is connected to a solar thermal plant, that generates additional solar steam for being used by said steam turbine powertrain. The output of the solar steam generator is used more effectively, and the overall plant performance, flexibility and operability are enhanced by at least part of the additional solar steam reaching the intermediate pressure steam turbine without being reheated in said reheat device.. ... Alstom Technology Ltd

01/08/15 / #20150007577

Combined cycle power plant and method for operating such a combined cycle power plant

The invention relates to a combined cycle power plant including a gas turbine the exhaust gas outlet of which is connected to a heat recovery steam generator, which is part of a water/steam cycle, whereby, for having a large power reserve and at the same time a higher design performance when operated at base load, the gas turbine is designed with a steam injection capability for power augmentation. For having a large power reserve at improved and optimized design performance when the plant is being operated at base load, the gas turbine includes at least one combustor, and a compressor for providing cooling air for that gas turbine, which is extracted from the compressor and cooled down in at least one cooling air cooler. ... Alstom Technology Ltd

01/08/15 / #20150007576

Gas turbine power plant with non-homogeneous input gas

The invention relates to a method for operating a gas turbine which includes a compressor with annular inlet area, at least two burners, a combustion chamber and a turbine. According to the method, at least one first partial intake flow, consisting of oxygen-reduced gas which has an oxygen concentration which is lower than the average oxygen concentration of the compressor intake flow, and at least one second partial intake flow, consisting of fresh air, are fed to the compressor in an alternating manner in the circumferential direction of the inlet area. ... Alstom Technology Ltd

01/08/15 / #20150007575

Power plant with integrated fuel gas preheating

The invention refers to a ccpp comprising a gas turbine, a water steam cycle with a steam turbine and a hrsg with at least two pressure levels, and a fuel preheater for preheating the fuel of the gas turbine. The fuel preheater includes a first heat exchanger for preheating the fuel to a first elevated temperature, which is connected to a feed water line from a pressure level of the hrsg, which is below the highest hrsg pressure level, and a second heat exchanger for further preheating the fuel gas to a second elevated temperature, which is connected to the high pressure feed water with the highest pressure level of the hrsg. ... Alstom Technology Ltd

01/08/15 / #20150007571

Gas turbine combustor

A combustor for a gas turbine that includes a front panel, an elongated sleeve with first end and second ends and a burner mounted in the sleeve. The second end of the sleeve seallessly mounted on the front panel. ... Alstom Technology Ltd

01/08/15 / #20150007547

Combustion device

The combustion device includes a burner, a combustion chamber downstream of the burner, a lance projecting into the burner for fuel and air injection, and a plenum that at least partly houses the burner. The plenum is connected to the inside of the lance to supply an oxidiser to it.. ... Alstom Technology Ltd

01/01/15 / #20150004001

Turbine blade

. . A turbine vane for a rotary turbomachine is described having a turbine blade which is delimited by a concave pressure-side wall and a convex suction-side wall which are connected in the region of a vane front edge which can be assigned to the turbine blade and enclose a cavity which extends in the longitudinal extent of the vane front edge and is delimited on the inner wall by the pressure-side wall and the suction-side wall in the region of the vane front edge and by an intermediate wall which extends in the longitudinal direction to the vane front edge and connects the suction-side wall and the pressure-side wall on the inner wall. The disclosed vane is distinguished by the fact that the intermediate wall has a perforation at least in sections in the connecting region to the suction-side wall and/or pressure-side wall, in order to increase the elasticity of the intermediate wall.. ... Alstom Technology Ltd

01/01/15 / #20150003975

Cooled wall

The disclosure pertains to a cooled wall for separating a hot gas flow path of a gas turbine from a cooling flow including at least one turbulator rib extending from the wall into the cooling flow, and having a height, a width for providing heat transfer enhancement for the cooled wall. The turbulator rib has filets at its root with a filet radius. ... Alstom Technology Ltd

01/01/15 / #20150003134

Modular multilevel converter using asymmetry

A power electronic converter assembly is provided having a multi-level converter, a plurality of phase elements and a controller to switch the multi-level converter. The multi-level converter includes a plurality of ac terminals and is operable to generate an ac phase voltage (va, vb, vc) at each ac terminal. ... Alstom Technology Ltd

01/01/15 / #20150002977

Mechatronic circuit breaker device and associated tripping method and use thereof in interrupting a high direct current

The invention relates to a new mechatronic circuit-breaker and its associated triggering method for breaking either alternating currents or direct currents at high voltages.. . ... Alstom Technology Ltd

01/01/15 / #20150001986

Method for repairing a stator

The method for repairing a stator having a damaged part includes providing the stator with a seat, removing the damaged part of the stator, connecting the inserts replacing the damaged part of the stator to the seat, and fixing the inserts.. . ... Alstom Technology Ltd

01/01/15 / #20150001982

Method for repairing a rotor and rotor

A rotor has a rotor core with protruding fingers defining slots for conductors and support blocks at the axial ends of the fingers fixed by screws. The fingers have holes for housing the screws. ... Alstom Technology Ltd

01/01/15 / #20150001815

Strip seal and method for designing a strip seal

A strip seal and method of configuration thereof for sealing portions of components of a gas turbine exposed to pressure pulsations. The strip seal has a sealing face that is configured to follow the contours of first portions of the components. ... Alstom Technology Ltd

01/01/15 / #20150001814

Low pressure steam turbine seal arrangement

A seal arrangement is installed between confronting co-planar portions of a low pressure steam turbine exhaust hood and a circular bulkhead that forms part of an exhaust duct structure of a steam turbine module. The seal arrangement forms a vacuum seal between the interior and exterior of the exhaust hood and comprises a flexible gasket in the form of an annular diaphragm. ... Alstom Technology Ltd

01/01/15 / #20150001812

Labyrinth seal for turbines

An improved labyrinth seal is described with the seal including a group of several fins forming circumferential barriers against the flow of a working fluid between stationary and rotating parts in a turbine, wherein within the group the volume between the penultimate fin and the last fin is altered compared to the average volume between other adjacent fins of the group.. . ... Alstom Technology Ltd

01/01/15 / #20150000408

Ultrasonic ndt sensor arrangement and method for inspecting surfaces of variable geometry of metal bodies

The invention relates to an ultrasonic ndt sensor arrangement for inspecting surfaces of variable geometry of metal bodies. The sensor arrangement includes a housing with a hollow inner space and an opening, through which part of an incoming sound beam exits the housing to enter a metal body to be tested. ... Alstom Technology Ltd

01/01/15 / #20150000300

Gas turbine having fuel monitoring

The invention relates to a method for detecting a fuel leakage in the fuel distribution system between a fuel control valve and at least one burner of a gas turbine during the operation of the gas turbine. In order to detect a fuel leakage, the fuel consumption is approximated in accordance with the mechanical power of the gas turbine, the fuel amount fed to the fuel distribution system is determined, and the leakage flow is determined from the difference between the fed fuel amount and the fuel consumption. ... Alstom Technology Ltd

01/01/15 / #20150000297

Method for determining at least one firing temperature for controlling a gas turbine and gas turbine for performing the method

The invention relates to a method for determining at least one firing temperature for controlling a gas turbine that comprises at least one compressor, at least one combustion chamber and at least one turbine, compressed air being drawn off at the compressor in order to cool the turbine and being fed to the turbine via at least one external cooling duct and via a control valve arranged in the cooling duct, in which method a plurality of temperatures and pressures of the working medium being measured in various positions of the gas turbine and the at least one firing temperature being derived from the measured temperatures and pressures. A more flexible and more accurate control is achieved additionally by determining the cooling air mass flow via the external cooling duct and by taking said flow into account when deriving the at least one firing temperature.. ... Alstom Technology Ltd

01/01/15 / #20150000296

Method for operating a gas turbine and gas turbine for performing the method

In a method for operating a gas turbine, nox is removed from the exhaust gases of the gas turbine by means of a selective catalysis device with the addition of nh3. The method achieves an extremely low nox content while simultaneously achieving economic consumption of nh3 and avoiding nh3 in the exhaust gas by maintaining the nox content of the exhaust gas at a constant level via a regulated return of a portion of the exhaust gas in varying operating conditions of the gas turbine, and by adjusting the addition of the nh3 in the selective catalysis device to the constant nox level.. ... Alstom Technology Ltd

01/01/15 / #20150000282

Annular helmholtz damper

The damper arrangement include two concentric hollow shapes, each having a wall, wherein the walls form an annular volume therebetween. The damper arrangement further includes one or more necks for connecting to a combustion chamber at corresponding one or more contact points. ... Alstom Technology Ltd

01/01/15 / #20150000249

Combined cycle power plant

The invention relates to a combined cycle power plant that includes, a gas turbine plant, a heat recovery steam generator heated by hot waste gases of a gas turbine plant, and a steam turbine plant driven by the steam produced, and a waste gas purification plant, arranged downstream of the heat recovery steam generator in which carbon oxides in the waste gases can be absorbed by an absorber fluid, which is subsequently regenerated at an elevated temperature in a regenerating section while giving up the carbon oxides for supplying to a storage. The regenerating section has a heater for maintaining a necessary elevated temperature for regeneration. ... Alstom Technology Ltd

01/01/15 / #20150000111

Method for retrofit a conductive bar

A yard includes an electric machine having a slot housing the conductive bar. The conductive bar includes a conductive element, and original insulation around the conductive element. ... Alstom Technology Ltd








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