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Alstom Technology Ltd patents (2016 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


Combined ignitor spark and flame rod

Disclosed herein is an ignition system for igniting a flame in a combustion chamber comprising a conduit secured to a windbox wall of the combustion chamber; where the conduit includes a fuel conduit for delivering fuel to the combustion chamber; and a single ignitor and flame rod assembly having a first end and a second end; where the first end comprises a high energy ignitor tip; where the second end is in electrical communication with an electrical power source; where the electrical power source comprises a spark transformer that comprises a primary winding and a secondary winding; a flame monitoring ignitor; where the flame monitoring ignitor is in direct electrical communication with a ground contact and with a low voltage side of the secondary winding; where the flame monitoring ignitor is disposed between the low voltage side of the secondary winding and a ground contact; and a transient voltage suppressor; that is disposed in parallel with the flame monitoring ignitor.. . ... Alstom Technology Ltd

Electrical power networks

A method of determining a communication time delay in a communication network between a local terminal and one or more remote terminals within an electrical power network includes: selecting, in respect of the or each remote terminal a calculation node in the electrical power network; calculating respective node currents flowing into the corresponding calculation node from the local terminal and the or each remote terminal; equating, in respect of the or each remote terminal, a sum of node currents flowing into the corresponding calculation node to zero according to kirchhoff s first law; and extracting, in respect of the or each remote terminal, a communication time delay between the local terminal and the said respective remote terminal from a corresponding equated sum of node currents.. . ... Alstom Technology Ltd

Balancing and/or discharge resistor arrangements

Circuits comprising at least one energy storage device, a resistor and switch arranged in series with the resistor are described. The energy storage device is arranged in parallel with the series connection of the switch and the resistor, and the switch is arranged to selectively switch the resistor into a parallel connection to the energy storage device. ... Alstom Technology Ltd

Method for measuring a stator core of an electric machine and measuring device

A method for measuring a stator core of an electrical machine includes the steps of winding at least one excitation coil around the stator core, applying a discontinuous voltage to the excitation coil(s) to magnetically excite the stator core, and measuring a quantity of the magnetically excited stator core. Further, a corresponding measuring device is disclosed.. ... Alstom Technology Ltd

Seawater plant with inclined aeration and mixed auto recovery

A method of treating effluent seawater generated in the removal of sulfur dioxide from a process gas by contacting the process gas containing sulfur dioxide with seawater, using inclined aeration and mixed auto recovery is provided. Additionally, an inclined aeration and mixed auto recovery seawater oxidation basin system for treating effluent seawater generated in the removal of sulfur dioxide from a process gas by contacting the process gas containing sulfur dioxide with seawater is provided.. ... Alstom Technology Ltd

Structure adaptable moving device

A structure adaptable moving device includes a flexible ring and one or more driving mechanism. The flexible ring may be adaptable to the changing or non-changing geometries of an environment. ... Alstom Technology Ltd

Fabric filter and method for cleaning a fabric filter

The fabric filter includes a first chamber with an inlet, a second chamber with an outlet, filter bags housed in the first chamber and having mouths that open in the second chamber and defining at least a bag nest, manifolds with nozzles facing the mouths and housed in the second chamber, a flow direction along which during operation a dirty gas to be treated in the fabric filter enters the bags nest. Angles between the manifolds and the flow gas direction are bigger than 45 degree.. ... Alstom Technology Ltd

Gas stripper system

A gas stripper system for purification of a primary coolant contaminated in cooling a nuclear reactor is provided. The gas stripper system includes a gas stripper column and a condenser arrangement. ... Alstom Technology Ltd

Steam dump device for a nuclear power plant

A nuclear power plant with a steam dump device and condenser for the nuclear power plant.. . ... Alstom Technology Ltd

Turbine turning gear system

The invention relates to turning gear system for a turbine. The system comprises a pinion configured and arranged to engage a turning gear so as to turn a shaft of the turbine and further includes a higher pressure oil system having a hydraulic motor and a lower pressure oil system having a hydraulic pump coupled to the hydraulic motor so as to enable a generation of a flow rate using the high pressure oil system as a motive force. ... Alstom Technology Ltd

Omnidirectional moving device and omnidirectional treading system incorporated in such device

Omnidirectional moving device and system are provided. The device includes a chassis member, at least a pair of treading members and a wheel arrangement. ... Alstom Technology Ltd

Rapid impregnation tool

A mold tool having at least two parts, a first part and a second part. The first part and the second part are releasably coupled to configure an outer mold structure and an inner mold structure. ... Alstom Technology Ltd

Power electronic converter

Power converters are disclosed. One power electronic converter for connecting ac and dc electrical networks and transferring power therebetween includes a converter limb extending between two dc terminals and having limb portions separated by an ac terminal. ... Alstom Technology Ltd

Lignite drying integration with a water/steam power cycle

The invention relates to power plant with a steam water power cycle and a lignite dryer that uses steam from the steam water power cycle. The connection of the lignite dryer to the steam water power cycle includes a first extraction line and a second extraction line.. ... Alstom Technology Ltd

12/01/16 / #20160348023

Lignite drying with closed loop heat pump

The invention relates to a dryer system for drying lignite coal used in a power plant. The system comprises a dryer and a closed loop heat pump circuit that is configured and arranged to provide heat energy to the dryer. ... Alstom Technology Ltd

12/01/16 / #20160348020

Lignite drying in a lignite fired power plant with a heat pump

The invention relates to a lignite fired steam power plant comprising a water/steam power cycle and a lignite dryer system having a heat pump circuit configured and arranged to provide heat energy to a lignite dryer of the dryer system. The heat pump includes a dryer heat exchanger, an expansion device and an evaporator heat exchanger connected to the first outlet line so as to enable heat energy transfer from the vapour of the first outlet line to the first working fluid. ... Alstom Technology Ltd

12/01/16 / #20160348019

Lignite drying with a heat recovery circuit

The invention relates to a lignite fired steam power plant comprising a water/steam power cycle, a dryer system for drying lignite coal and a heat recovery system for recovering thermal energy from the dryer system. The heat recovery system vaporises condensate against a vapour line of the dryer steam and then compresses the vaporised condensate for use to preheat either or both combustion air or condensate of the water/steam power cycle.. ... Alstom Technology Ltd

12/01/16 / #20160346787

Modified journal assembly for pulverizer

The present disclosure relates to a pulverizer includes a pulverizer housing with an grinding assembly having a grinding table situated therein. The grinding table provides a grinding surface area for a material, such as a fossil fuel, such as coal, to be pulverized. ... Alstom Technology Ltd

12/01/16 / #20160346730

Method of controlling a wet scrubber useful for removing sulphur dioxide from a process gas

A wet scrubber for cleaning a process gas containing sulphur dioxide comprises an absorption vessel for contacting the process gas with an absorption liquid to absorb sulphur dioxide from the process gas, a sensor for measuring a concentration in the absorption liquid, and a control unit. The control unit is adapted to receive a measurement signal from the sensor and to control, based on the measured concentration, at least one wet scrubber operating parameter influencing the concentration in the absorption liquid.. ... Alstom Technology Ltd

11/24/16 / #20160344286

Converter

A dc to dc converter for converting voltage between two voltage levels is described. The converter comprises a plurality of capacitors and switch units and is controllable between a first and second commutation state. ... Alstom Technology Ltd

11/24/16 / #20160339448

Method for monitoring the signal quality of an electrostatic precipitator and electrostatic precipitator

The method for monitoring the signal quality of an electrostatic precipitator comprises measuring in real time at least one feature of a primary electric power sent to a transformer of the electrostatic precipitator and/or at least one feature of a secondary electric power sent to the collecting electrodes and discharge electrodes of the electrostatic precipitator, elaborating the at least a measured feature generating an information indicative of the electrostatic precipitation signal quality, providing the information.. . ... Alstom Technology Ltd

11/10/16 / #20160329178

Manufactured piece for a gas-insulated high-voltage circuit breaker tank with particle traps and tank containing such a piece

A manufactured piece of a tank made by casting or molding for a high-voltage circuit breaker is provided. It comprises a hollow body with at least one wall extending longitudinally along a main axis to delimit a cavity with two ends, a top and a bottom; at least one opening in the top of the body; and at least one particle trap in the bottom of the body for collecting particles. ... Alstom Technology Ltd

11/10/16 / #20160328199

Methods for assessing reliability of a utility company's power system

Methods are provided for assessing reliability of a power system of a utility company. At least one main overview display is obtained. ... Alstom Technology Ltd

11/10/16 / #20160325794

Magnetic roller

A magnetic roller for being rotatable on a ferromagnetic surface is provided. The magnetic roller includes a roller wheel having an inner space, a magnetic array arrangement and at least one first drive mechanism. ... Alstom Technology Ltd

11/03/16 / #20160320062

Nozzle for a gas turbine combustor

The disclosure concerns a nozzle for a gas turbine combustor, the nozzle comprising an inner channel, a swirl channel, a mixing zone and an outlet channel, wherein the nozzle extends from an inlet to an outlet, the swirl channel is disposed around the inner channel, the inner channel and the swirl channel extend from the inlet to the mixing zone, the mixing zone extends from the inner channel and the swirl channel to the outlet channel, and the outlet channel extends from the mixing zone to the outlet. A burner and a gas turbine comprising the nozzle are also described, along with a method of using the nozzle.. ... Alstom Technology Ltd

11/03/16 / #20160319939

High-flow valve arrangement in steam turbine safety system

A high-flow valve arrangement in an electro-hydraulic safety control unit to discharge oil volume on instructions from a steam turbine safety system to actuate actuators to stop steam flow in steam turbines to shut-off, is provided. The valve includes a valve body with a flange having a plurality of spaced-apart through holes, a flat-circular plate cartridge and a valve housing configured to each other. ... Alstom Technology Ltd

11/03/16 / #20160319749

Control concept for closed loop brayton cycle

An improved closed loop brayton cycle for a power plant is provided that includes a heater, at least one turbine, a recuperator, at least one cooler, at least one compressor, a bypass line and a flap valve arrangement in a closed circuit in which working fluid is circulated to produce electricity via a generator. Depending upon the requirement, such as, in case of gird load disconnection, speed of a shaft-line to which the turbine, the compressor and the generator are configured is also required to be reduced without any impact on the pressure drop in the cycle. ... Alstom Technology Ltd

11/03/16 / #20160319700

System and method for regulating pressure for a turbomachine

A pressure regulating system which is an arrangement with a turbo machine for example a nuclear steam turbine. Main lubricant oil pump supply fluid for example lubricant oil to the nuclear steam turbine passes through a cooler and via filter through a main supply line. ... Alstom Technology Ltd

10/27/16 / #20160312997

Method and system for gas initiated natural circulation vertical heat recovery steam generator

The present disclosure is directed to a method and a system employing a gas introduced into the system as a startup operation for a natural circulation vertical heat recovery steam generator (hrsg) to initiate natural circulation of a fluid within the system. More specifically, the present disclosure is directed to a method and a system employing a gas introduced into an outlet header of an evaporator, into an outlet header of an evaporator and into one or more risers near the outlet header of the evaporator, or into one or more risers near the outlet header of the evaporator, to initiate natural circulation of a fluid in a desired system direction from the evaporator directly into a steam drum.. ... Alstom Technology Ltd

10/20/16 / #20160308360

Observer based monitoring and control of submodules in modular multilevel converter

This application relates to control methods and apparatus for a voltage source converter comprising a plurality of energy storage devices which can be selectively connected into an arm of the voltage source converter. The apparatus is configured to generate a modelled value of the voltage of an energy storage device of the voltage source converter based on one or more model parameters and the operation of the voltage source converter, receive the modelled value and also a measured value of the voltage of at least one energy storage device, determine an error between the modelled value and the measured value, and generate a model control signal for adapting the model based on said error so that the modelled value substantially corresponds to the measured value. ... Alstom Technology Ltd

10/20/16 / #20160307655

Nuclear instrumentation and control system

An instrumentation and control (i&c) system for emergency diesel generator (edg) of the nuclear power plants is provided. The instrumentation and control system is adapted to be divided into two parts: first and second control parts. ... Alstom Technology Ltd

10/20/16 / #20160305650

Collar supported pressure parts for heat recovery steam generators

Disclosed herein is a heat recovery steam generator system comprising a vestibule comprising a base plate, a roof and side walls; where the base plate is opposedly disposed to the roof; a heat exchanger space through which an exhaust gas stream is charged; where the vestibule is disposed atop a heat exchanger space; and where the vestibule comprises at least one header in fluid communication with a tube bundle; where a portion of the tube bundle is disposed in the heat exchanger space; and a support system for the tube bundle; where the support system comprises a strap that is reversibly attached to the base plate as well as to the roof of the vestibule or to a structural member in the vestibule; and where each tube of the tube bundle contacts a collar that rests on the base plate.. . ... Alstom Technology Ltd

10/20/16 / #20160305111

Method for erecting a boiler

The method for erecting a boiler includes erecting a main structure comprising at least a cavity, assembling on the ground at least a roof for the main structure, assembling on the ground at least a module having at least heat exchanging surfaces, lifting the roof up to an intermediate altitude within the cavity, the intermediate altitude being an altitude between a ground level and a top of the main structure in correspondence of the cavity, connecting the module to the roof at the ground level, and further lifting the roof and connecting the roof to the main structure.. . ... Alstom Technology Ltd

10/06/16 / #20160291063

Power transformers using optical current sensors

Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current sensors used to monitor standby power transformers, specifically fiber optical current and voltage sensors and, more particularly, to applications involving filters for use in such sensors, such as frequency tracking comb filters. According to one embodiment, a method for monitoring a connection condition of a stand by power transformer includes the steps of measuring a current flowing through a high voltage side of the standby power transformer using at least one optical current sensor disposed proximate to a current flow path of the high voltage side, using a comb filter to filter the measured current, determining whether the filtered, measured current is less than a predetermined threshold value; and generating an alarm indication that the high voltage side of the standby power transformer is unconnected.. ... Alstom Technology Ltd

10/06/16 / #20160289091

Foam intercept system

A foam intercept system and a method of using the foam intercept system are disclosed herein. The foam intercept system is useful to control levels of foam generated on the surface of effluent seawater during aeration of the effluent seawater in a seawater aeration basin. ... Alstom Technology Ltd

10/06/16 / #20160289080

System for low pressure carbon dioxide regeneration in a chilled ammonia process

Disclosed herein is a system for generating a carbon dioxide gas stream that includes an absorber, a regenerator that lies downstream of the absorber, a carbon dioxide wash station that lies downstream of the regenerator and a reverse osmosis system for receiving a wash solution from the carbon dioxide wash station.. . ... Alstom Technology Ltd

10/06/16 / #20160288050

Method and apparatus for reagent recovery in a flue gas processing system

A system and method is disclosed for recovering reagents that are used in removing contaminants from a flue gas stream. The system and method includes contacting the flue gas stream with reagents such as ammonia and sulfuric acid to create an ammonium sulfate stream. ... Alstom Technology Ltd

09/29/16 / #20160285378

Control of dc transmission lines

This application relates to methods and apparatus for control apparatus of a voltage source converter (401) for direct current transmission of electrical power over a transmission line (402). The control apparatus comprises regulation control (403) for generating a regulation signal for the converter to regulate an electrical parameter of the voltage source converter, such as voltage or power, so as to regulate power transmission over the transmission line. ... Alstom Technology Ltd

09/29/16 / #20160282173

Measuring method and device for measuring deflections at stator end windings

The present disclosure relates to a method, a device, and a computer program for measuring deflections at the stator end winding of an electric machine. Disclosed is a measurement method, a device, and a computer program for measuring vibrations at the stator end winding of an electric machine, with the steps of arranging sensors at the stator end winding at different positions, measuring the vibrations with the sensors, measuring the amplitudes and phases of the radial and tangential vibrations with the sensors, deriving displacements of the stator end winding due to vibrations by means of the measured amplitudes and/or phases of the radial and tangential vibrations.. ... Alstom Technology Ltd

09/29/16 / #20160279565

Dual injection grid arrangement

A furnace/boiler incorporates a dual injection grid arrangement as per present disclosure. The furnace includes an enclosure having burners projecting through walls of the lower half of the enclosure. ... Alstom Technology Ltd

09/22/16 / #20160274149

Very high-voltage dc line voltage sensor

The invention provides a voltage sensor for a very high-voltage direct current line comprising two voltage divider stages connected in series, the sensor being characterized in that a first voltage divider stage (e1) that divides the very high voltage to an intermediate voltage is constituted by at least two elementary voltage divider stages (em) connected in series and distributed in a composite insulator (i), each elementary stage (em) comprising a resistor re in parallel with a capacitor ce, the second voltage divider stage (e2) that delivers the intermediate voltage being constituted by electronic components comprising capacitors and/or interchangeable resistors.. . ... Alstom Technology Ltd

09/22/16 / #20160273406

Combined cycle system

A combined cycle system where steam discharged from a water separation unit is routed through a high pressure outlet line to a set of super-heaters and discharged from the set of super-heaters through a main outlet line of a heat recovery steam generator to be introduced into the steam turbine. An attemperating line is connected between the high pressure outlet line and the main outlet line of the heat recovery steam generator to introduce a portion of steam that is discharged from the water separation unit into the steam discharged from the set of super-heaters. ... Alstom Technology Ltd

09/22/16 / #20160273390

Exhaust gas liner for a gas turbine and gas turbine with such an exhaust gas liner

An exhaust gas liner for a gas turbine includes an annular inner shell and an annular outer shell, which are arranged concentrically around a machine axis of the gas turbine to define an annular exhaust gas channel in between. The inner shell and/or said outer shell are composed of a plurality of liner segments, which are attached to a support structure. ... Alstom Technology Ltd

09/15/16 / #20160265764

System and method for reducing emissions in a chemical looping combustion system

A system for removing impurities from post-combustion gas includes an oxidizer and a reducer operatively connected to the oxidizer, the reducer configured to receive the post-combustion gas. The system further includes a clou material capable of selective circulation between the oxidizer and reducer. ... Alstom Technology Ltd

09/08/16 / #20160258570

Support structure comprising a shock absorbing pillar

The invention provides a support structure (10) comprising at least one cylindrical pillar (16) of vertical main axis, having a bottom end (16i) that is connected to the ground (14) and a top end (16s) connected to a component to be supported; the support structure being characterized in that the pillar (16) includes at least one helical slot (20) coaxial about the main axis of the pillar (16).. . ... Alstom Technology Ltd

09/08/16 / #20160258073

Pot heat exchanger

A raw gas collection system for collecting raw gas from a plurality of aluminium smelting pots is equipped with a plurality of branch ducts, each of which is arranged to channel a respective branch flow of raw gas from an aluminium smelting pot to a collection duct, which is common to and shared by the branch ducts. Each of said branch ducts is, near an outlet thereof, equipped with a curved section for aligning the branch flow with a flow direction of raw gas already present in the common collection duct, and a constriction for accelerating the branch flow through the branch duct outlet into the common collection duct. ... Alstom Technology Ltd

09/01/16 / #20160252017

Method for controlling the operation of a gas turbine with sequential combustion

A method for controlling the operation of a gas turbine with sequential combustion, which gas turbine comprises a compressor with variable inlet guide vanes (vigv), a first combustor, a high-pressure turbine downstream of the first combustor, a second combustor downstream of the high-pressure turbine, and a low-pressure turbine downstream of the second combustor.. . ... Alstom Technology Ltd

09/01/16 / #20160250587

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

08/25/16 / #20160245516

Gas outlet monitoring system

A gas outlet monitoring system for a boiler system includes a gas probe(s) with a plurality of gas sensing locations wherein each location measures a plurality of parameters of the gas flow, such a oxygen concentration and temperature. The multi-sensor probe includes a tubular lance and a plurality of sensor pods spaced along the lance. ... Alstom Technology Ltd

08/25/16 / #20160245421

Thermostatic flow control device and method of use

A flow control device is used to regulate fluid flow from an upstream supply source to a downstream destination within a plant. At least portions of the flow control device are fabricated from one or more thermostatic materials selected based on the specific thermostatic properties thereof. ... Alstom Technology Ltd

08/25/16 / #20160243644

Method for manufacturing a part by means of an additive manufacturing technique

A method for manufacturing a part by means of an additive manufacturing technique and by post additive manufacturing process steps.. . ... Alstom Technology Ltd

08/25/16 / #20160243494

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

An apparatus for evaporating waste water and reducing flue gas acid gas emissions includes an evaporator device configured to receive a portion of flue gas emitted from a combustion unit and waste water for direct contact of the flue gas with the waste water to cool and humidify the flue gas, and to evaporate the waste water. An alkaline reagent as well as activated carbon may be mixed with the waste water prior to waste water contact with the flue gas. ... Alstom Technology Ltd

08/25/16 / #20160243493

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 configured to receiving a portion of flue gas emitted from a boiler unit 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 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

08/18/16 / #20160241004

Gas-insulated medium or high-voltage electrical apparatus including carbon dioxide, oxygen, and heptafluoro-isobutyronitrile

The present invention provides medium- or high-voltage equipment including a leaktight enclosure in which there are located electrical components and a gas mixture for providing electrical insulation and/or for extinguishing electric arcs that are likely to occur in said enclosure, the gas mixture comprising heptafluoroisobutyronitrile, carbon dioxide, and oxygen in small quantities. Electrical components covered in a solid dielectric layer of varying thickness are located inside said leaktight enclosure of the equipment of the invention.. ... Alstom Technology Ltd

08/18/16 / #20160236144

Flue gas treatment system and method

The flue gas treatment system (1) comprises a reactor (2), a pre-separator (3) downstream of the reactor (2), a separator (4) such as a fabric filter downstream of the pre-separator (3), a humidifier (5) downstream of the separator (4), a supply (7) of a pure fresh reagent into the flue gas (fg) downstream of the pre-separator (3) and upstream of or at the separator (4).. . ... Alstom Technology Ltd

08/11/16 / #20160230608

Single shaft combined cycle power plant shaft arrangement

The invention relates to a single shaft combined cycle power plant having: a shaft on which is sequentially located, a gas turbine, a medium pressure steam turbine, a low pressure steam turbine, a generator, and a high pressure steam turbine.. . ... Alstom Technology Ltd

08/11/16 / #20160230573

Steam turbine diffuser configuration

The invention relates to a turbine diffuser for recovering pressure from a fluid exhausted from a last stage blade, the diffuser. In at least in a region between 10% of the longitudinal length and of the diffuser and a downstream end of the diffuser, the inner guide forms an inflectionless curve and further has a peak radial height at a point between 40%-60% of the longitudinal length.. ... Alstom Technology Ltd

08/11/16 / #20160228957

Groove cutting tool

The invention relates to a groove cutting tool having: a body and a holder wherein the holder is slidably mounted in the body. The holder has a first end at which a blade is mounted and a second end, distal in a slidable direction of the holder, from the first end. ... Alstom Technology Ltd

08/04/16 / #20160227660

Assembly of modules, module support and module

An assembly of modules for an electrical circuit comprising: a module support for at least two modules and at least two modules, each module comprising two complementary connectable sub-modules. The module support comprises for each sub-module at least an alignment member adapted to individually align the sub-module during its installation on the module support in such way to connect it to complementary sub-module already installed on the module support to form one of the modules.. ... Alstom Technology Ltd

08/04/16 / #20160226367

High power electrical module and high power electrical circuit

A high power electrical module comprising at least a first and a second electrical sub-module, at least a first bus bar that electrically connects together the first and the second electrical sub-module, and at least a first and a second heat sink on which are respectively mounted the first and the second electrical sub-module. The first and the second heat sink are arranged independently movable from each other in such manner to compensate the expansion of the first bus bar. ... Alstom Technology Ltd

08/04/16 / #20160222948

Solar thermal power system

A solar thermal power system includes a solar receiver for heating thermal energy storage fluid and be stored and utilised from a thermal energy storage arrangement having hot and cold storage tanks. The system includes a steam generator arrangement, which utilises the heat of the thermal energy storage fluid to produces steam to run a turbine. ... Alstom Technology Ltd

08/04/16 / #20160222830

Electrical energy storage and discharge system

Electrical energy storage and discharge system for storing electrical energy as thermal energy includes a heat pump cycle with first working fluid, a water steam cycle with second working fluid, a first thermal storage system with first thermal fluid, a second thermal storage system with second thermal fluid, an electrical heater member and a power regulating member, fluidly connected to each other. The system includes fluidly connected first cold and hot storage tanks, and the system includes fluidly connected second cold and hot storage tanks. ... Alstom Technology Ltd

08/04/16 / #20160222528

Method for electrochemical reduction of co2 in an electrochemical cell

The invention refers to method for electrochemical reduction of co2 in an electrochemical cell having a cathode and an anode. The method comprises: at the cathode, reducing the co2; at the anode, oxidizing a first hydrocarbon generating a second hydrocarbon.. ... Alstom Technology Ltd

08/04/16 / #20160221115

Method for manufacturing an element and element

A method for manufacturing an element by an additive manufacturing process is disclosed. The method comprises manufacturing the element such as to comprise a front face extending from the base side and into the buildup direction. ... Alstom Technology Ltd

07/28/16 / #20160217952

Exhaust diffuser for a gas-insulated high voltage circuit breaker

A gas exhaust diffuser for a circuit breaker, comprising a first casing extending longitudinally along a principal axis with an open end to allow gas to enter and a closed end, and a second casing coaxial to the first casing, extending along the principal axis, with at least one outlet to allow gas to escape, the closed end of the first casing being arranged in the second casing and the first casing having at least two radial openings near its closed end to provide a fluid communication between the first and second casing. A plurality of incurved elements are positioned radially in the second casing at the at least one radial opening to create a rotation of an entering exhaust flow in a plan perpendicular to the principal axis, thereby generating a substantially helicoidally-shaped exhaust flow path in the second casing.. ... Alstom Technology Ltd

07/28/16 / #20160215635

Steam turbine and a method for retrofitting a multi-stage partial arc of admission steam turbine

A method of retrofiting a multi-stage partial arc or admission steam turbine and a steam turbine obtainable by the method. The method comprises forming at least one inlet belt in the inner housing downstream of at least one the first blade rows of the steam turbine and forming a duct, connecting the first inlet line and the or each inlet belt. ... Alstom Technology Ltd

07/21/16 / #20160209031

Model-based controls for a furnace and method for controlling the furnace

Disclosed herein is a control system for nox reduction in a power plant, the control system comprising a model predictive controller; a proportional integral differential controller and/or an adaptive controller; where the proportional integral differential controller and/or an adaptive controller are subordinated to and in operative communication with the model predictive controller; where the proportional integral differential controller and/or an adaptive controller comprise a feedback loop; a nox reduction system comprising a nox reducing agent supply tank and a water supply tank; and a furnace for combusting a fuel; where the furnace lies downstream of the nox reduction system and where the furnace is provided with a plurality of nozzles that are in fluid communication with the nox reduction system; where the control system is in electrical communication with the nox reduction system.. . ... Alstom Technology Ltd

07/14/16 / #20160199772

Removal of mercury emissions

A method for more efficiently removing pollutant gases from flue gases of a solid-fueled steam generator includes storing a silo a carbonaceous sorbent in a powdered form; extracting a superheated steam from a superheated steam source; and reducing a temperature, pressure and moisture content of the superheated steam to provide a processed steam of a desired pressure, temperature and moisture content. The method further includes providing a sorbent mill receiving the carbonaceous sorbent and the processed steam, wherein the sorbent mill is operable to de-agglomerate and comminute the carbonaceous sorbent using the processed steam to provide a processed sorbent. ... Alstom Technology Ltd

07/07/16 / #20160197578

Method and device for regulating the supply of a photovoltaic converter

A device for regulating the supply to a photovoltaic converter, the device comprising: a laser source (2); a photovoltaic converter (6) that feeds a dc-dc converter (8); circuit (100) for regulating the input impedance of said dc-dc converter (8) as a function of the operating voltage (us) of the photovoltaic converter (6) and of its no-load voltage (us0); and circuit (42) for measuring an output voltage of the dc-dc converter (8) and for producing a regulation signal (sr) for regulating the laser source.. . ... Alstom Technology Ltd

07/07/16 / #20160195270

Arrangement of a carbon dioxide generation plant, a capture plant and an carbon dioxide utilization plant and method for its operation

The method for operating an arrangement of a generation plant, a carbon dioxide capture plant and a carbon dioxide utilization plant includes generating carbon dioxide containing flue gas, supplying the carbon dioxide containing flue gas to the capture plant, separating a carbon dioxide stream from the carbon dioxide containing flue gas, supplying the utilization plant with the carbon dioxide stream, supplying the utilization plant with water, generating syngas at the utilization plant, supplying heat discharged from the utilization plant to the generation plant and/or to the capture plant and/or using it within the utilization plant.. . ... Alstom Technology Ltd

07/07/16 / #20160195265

Sealpot and method for controlling a solids flow rate therethrough

A sealpot for a combustion power plant includes a downcomer standpipe which receives solids of the combustion power plant, a bed including a first end and a second opposite end, the first end connected to the downcomer standpipe, a discharge standpipe disposed at the second opposite end of the bed, and an orifice plate disposed between the bed and the discharge standpipe separating the discharge standpipe from the bed. The orifice plate includes apertures disposed at a height above the bed which allow transport of fluidized solids and gas through the orifice plate.. ... Alstom Technology Ltd

07/07/16 / #20160195262

Flue gas heat recovery integration

A power plant with a fossil fuel fired boiler, an air feed system, flue gas system and condensate system. A unitary flue gas heat exchanger spans a bypass line in the flue gas system and the condensate system so as to improve the thermal efficiency of the power plant while minimising complexity.. ... Alstom Technology Ltd

07/07/16 / #20160194982

Multi stage steam turbine for power generation

The invention relates to a steam turbine having a plurality of stages comprising a plurality of points of admission connected to a plurality of admission lines, a feed line connected to the plurality of admission lines and at least one extraction line, extending from an intermediate stage of the steam turbine, for extracting steam from the steam turbine. The at least one capacity line fluidly connects an admission lines and at least one extraction line so as to bypass the steam turbine, and is further configured to increase a swallowing capacity of the steam turbine as measured from the feed line upstream of the capacity line compared to the plurality of points of admission.. ... Alstom Technology Ltd

06/09/16 / #20160164385

Tool for making generator bars

A tool for shaping generator bars for large power generators. In particular, a tool for shaping a stator bar out of a straight unprocessed bar.. ... Alstom Technology Ltd

06/09/16 / #20160160692

Method for starting a steam turbine

The invention relates to a method for starting a steam turbine. The method involves pre-warming the steam turbine with a steam in which 65% of an energy used to pre-warming the steam turbine is derived from a latent heat energy of the steam.. ... Alstom Technology Ltd

06/09/16 / #20160160354

Coatings for turbine parts

A method and a turbine part having a coating with a matrix layer that includes a high temperature resistant hydrophobic polysiloxane filler, wherein the coating has superior mechanical strength and temperature resistance.. . ... Alstom Technology Ltd

06/09/16 / #20160159383

Carriage cart with obstacle overcoming

The invention relates to a carriage cart, which comprises a chassis frame with a front end and a rear end; a pair of front wheels mounted on the front end of the chassis frame; a pair of rear wheels mounted on the rear end of the chassis frame. The carriage cart according to example embodiments of the present invention may improve the performance of obstacle overcoming for robotic system.. ... Alstom Technology Ltd

06/09/16 / #20160158689

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

06/02/16 / #20160156146

Tool and method for shaping a hollow conductor bar

The disclosure relates to a tool and a method for shaping a conductor bar for an electric machine and a use of such a tool. Disclosed is a tool for shaping a conductor bar for an electric machine, with a hammer or a movable wheel supported by arms, the hammer or the movable wheel are suitable for engaging and exerting force to the conductor bar to modify the height h and/or the surface structure of the conductor bar, whereas the hammer conducts a bidirectional movement in the axial direction of the tool, whereas the wheel conducts a bidirectional movement in the axial direction of the tool and/or a rotating movement, whereas the tool applies heat to the conductor bar by friction of the hammer or the movable wheel. ... Alstom Technology Ltd

06/02/16 / #20160153661

Helmholtz damper and gas turbine with such a helmholtz damper

A helmholtz damper, especially for damping pulsations in a combustor of a gas turbine, including a damper volume, which can be connected to a damped space by means of a neck tube. The helmholtz damper further includes a piston, which is moveable within the damper volume and divides the damper volume into a variable first part (v1) on one side of said piston. ... Alstom Technology Ltd

06/02/16 / #20160153657

Combustion system for a boiler

The present disclosure relates to a system and a method for combustion of solid fuels. The combustion system includes burners which supply a mixed flow of fuel and air through a fuel nozzle to the combustion chamber for example of a boiler. ... Alstom Technology Ltd

06/02/16 / #20160151860

Method for manufacturing a component using an additive manufacturing process

The invention relates to a method for manufacturing a component, especially for gas turbines and other thermo machinery. The method includes providing a data set defining the component for being used in an additive manufacturing process; manufacturing said component by means of said additive manufacturing process according to said data set; and subjecting said manufactured component to a heat treatment (ht) in order to change the microstructure of the manufactured component. ... Alstom Technology Ltd

05/26/16 / #20160146462

Plant, combustion apparatus, and method for reduction of nox emissions

A combustion apparatus includes a combustion chamber having multiple combustion zones. A first wind box is in communication with the first combustion zone to feed the fuel to be fed into the combustion chamber for initial combustion of the fuel within the first combustion zone. ... Alstom Technology Ltd

05/26/16 / #20160146013

Turbine arrangement

The invention relates to a turbine for generating work by a stagewise expansion of a gas, such as steam wherein a downstream stage guide average height is less than an adjacent upstream stage runner average height.. . ... Alstom Technology Ltd

05/26/16 / #20160145127

System and method for reducing gas emissions from wet flue gas desulfurization waste water

A method and a system (12) for reducing plant (10) gas emissions by reducing ammonia/ammonium ion content in waste water w prior to the waste water w being evaporated in an evaporator device (7). As such, the method and the system (12) reduce the release of ammonia/ammonium ion into the flue gas fg stream thus reducing emissions of ammonia/ammonium ions to the environment or atmosphere and/or accumulation of ammonia/ammonium ions in downstream equipment such as a wet flue gas desulfurization system (13).. ... Alstom Technology Ltd

05/19/16 / #20160138410

Rotating machine

A rotating machine cooled by a cooling medium directed through the rotating machine in a main flow and a secondary flow includes a rotor. A stator includes a swirl passage configured to guide the secondary flow so as to be discharged from a pre-swirl nozzle. ... Alstom Technology Ltd

05/12/16 / #20160130953

Damping inlay for turbine blades

The invention concerns a turbine blade comprising a surface, a recess within the surface, and a damping inlay within the recess. The damping inlay comprises a chamber with a damping material, for example particles. ... Alstom Technology Ltd

05/12/16 / #20160130951

Cooling for turbine blade platform-aerofoil joints

The invention concerns a turbine blade for a gas turbine having a platform part and an aerofoil part. The platform part includes a platform surface arranged to be attached to a corresponding aerofoil surface of the aerofoil part. ... Alstom Technology Ltd

05/05/16 / #20160123597

Combustor arrangement for a gas turbine

A combustor arrangement for a gas turbine includes a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. These elements of the combustor arrangement are arranged in a row to form a flow path extending between the first combustion chamber and the second burner. ... Alstom Technology Ltd

05/05/16 / #20160123595

Combustor arrangement for a gas turbine

A combustor arrangement for a gas turbine includes a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. These elements of the combustor arrangement are arranged in a row to form a flow path extending between the first combustion chamber and the second burner. ... Alstom Technology Ltd

05/05/16 / #20160123593

Can combustion chamber

The can combustion chamber includes a casing housing a plurality of cans. Each can includes a wall and a perforated cooling liner around the wall. ... Alstom Technology Ltd

05/05/16 / #20160123158

Rotor blade with edge protection

The invention relates to sheath for a blade that has a uniform assembly direction over the radial height of the sheath whether the blade has a straight or curved trajectory. This is achieved by the a sheath formed around the edge, having a first inner surface wherein a first tangential vector projected tangentially to the first inner surface in a direction away from the head portion in an longitudinal plain forms a first angle with the rotational axis that does not vary over the radial height of the sheath while a second tangential vector projected tangentially from any point of the second inner surface of the sheath in a direction towards the head portion intersects the first tangential vector.. ... Alstom Technology Ltd

05/05/16 / #20160123151

Steam turbine rotor

The invention relates to a steam turbine rotor wherein the inter blade region rotor surface, the feed region rotor surface, the piston region rotor surface and the stress relief groove rotor surface of the rotor are configured and arranged as steam exposed surfaces during normal operation of the steam turbine rotor. The steam turbine rotor has a thermal barrier coating on at least the piston region rotor surface.. ... Alstom Technology Ltd

04/28/16 / #20160115826

Combined cycle power plant

The present invention generally relates to a combined cycle power plant. More in particular, the present invention relates to a plant where the temperature of the flow of gas exiting the turbine is lowered without the need of employing high cost nickel alloys within the heat recovery steam generator.. ... Alstom Technology Ltd

04/28/16 / #20160115815

Turbine assembly

The invention relates to a turbine in which a bypass-passage extends through a base member of a stationary vane to join seal cavities of adjacent rotating blade rows so that seal flow passing between a casing and shrouds of the rotating blades at least partially bypasses the turbine main flow passage.. . ... Alstom Technology Ltd

04/28/16 / #20160114433

Method of welding in deep joints

The present relates to a method of welding in deep joints in narrow-gap geometry. The two metallic components are arranged next to each other such that there is nearly a zero gap between the two components. ... Alstom Technology Ltd

04/07/16 / #20160097458

Sealing segment

The invention relates to a sealing segment for sealing between a stationary component and a rotating component. The sealing segment having a passage that extends so as to enable pressure balancing between radial ends of the sealing segment so by providing a seal that can ensure a minimum seal distance is maintained without the need for the complexities of actuators or other mechanical devices.. ... Alstom Technology Ltd

04/07/16 / #20160097453

Seal

The invention relates to a sealing system for sealing between a first component and a second component wherein at least one or either the first component or the second component is a rotating component. The first component has a circumferential groove in which a sealing segment has first and fifth end portions adjacent the groove and second, third and fourth portions that form a u shape that mirrors the shape of and extends into the circumferential groove.. ... Alstom Technology Ltd

04/07/16 / #20160096130

Dust separator useful with dry scrubber system

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 dust separator 37. ... Alstom Technology Ltd

03/31/16 / #20160094172

System for compensating rotor vibrations

The present disclosure relates to a system to compensate for mechanical forces on a rotating rotor of an electric machine, to a method for compensating mechanical forces on a rotating rotor of an electric machine, and to a use of a corresponding system. Disclosed is a system for compensating torsions at a rotating rotor. ... Alstom Technology Ltd

03/31/16 / #20160091208

Combustor arrangement with fastening system for comustor parts

A combustor arrangement with a front panel, a combustor liner, and a carrier structure element is provided for carrying the front panel and the combustor liner, wherein the combustor arrangement further includes a fastening system for connecting the front panel, the combustor liner, and the carrier structure element to one another. The fastening system includes at least one elastic connection element, the latter being fixedly connected to the carrier structure element and extending therefrom to the combustor liner and to the front panel. ... Alstom Technology Ltd

03/31/16 / #20160091206

Combustor front panel

A front panel for a combustor has a hot side and a cold side and at least one reception adapted for receiving a combustor part. The front panel has a double-wall design with a hot-side wall and a cold-side wall. ... Alstom Technology Ltd

03/31/16 / #20160090996

Single and multi-pressure condensation system

The invention relates to a condenser system comprising a condenser with an extraction system. The vent system adapted for variable non-condensable loading by comprising an adjustable ejector for adjustably reducing a pressure ratio between different regions of the condenser.. ... Alstom Technology Ltd

03/31/16 / #20160090848

Method for producing a three-dimensional article and article produced with such a method

The invention relates to a method for producing a three-dimensional article or at least a part of such an article made of a gamma prime (γ′) precipitation hardened nickel base superalloy with a high volume fraction (>25%) of gamma-prima phase which is a difficult to weld superalloy, or made of a cobalt base superalloy, or of a non-castable or difficult to machine metal material by means of selective laser melting (slm), in which the article is produced by melting of layerwise deposited metal powder with a laser beam characterized in that the slm processing parameters are selectively adjusted to locally tailor the microstructure and/or porosity of the produced article or a part of the article and therefore to optimize desired properties of the finalized article/part of the article.. . ... Alstom Technology Ltd

03/31/16 / #20160090847

Cooling scheme for a turbine blade of a gas turbine

A turbine blade of a gas turbine includes a radially extending airfoil with a suction side and pressure side, which extend each in axial direction between a leading edge and a trailing edge of the airfoil. The leading edge is cooled by means of impingement cooling with rows of radially distributed jets of a cooling medium impinging on the inner side of the leading edge. ... Alstom Technology Ltd

03/24/16 / #20160082547

Component or coupon for being used under high thermal and stress load and method for manufacturing such component or coupon

A component or coupon for use in a thermal machine under extreme thermal and mechanical conditions comprises an alloy material having a controllable grain size (d). A grain size distribution (d(x,y,z)) of the component or coupon corresponds to at least one of an expected temperature distribution (t(x,y,z)), an expected stress distribution (σ(x,y,z)) and an expected strain distribution (ε(x,y,z)), which vary with geometrical coordinates (x,y,z) of the component or coupon, such that a lifetime of the component or coupon is improved with respect to a similar component or coupon having a substantially uniform grain size.. ... Alstom Technology Ltd

03/17/16 / #20160076868

Tool for measuring geometrical parameters of a blade or vane in a turbomachine

A tool for measuring geometrical parameters of a vane or a blade of a turbomachine, particularly for measuring a distance between the tip of the vane or blade and a reference plane is provided. The tool includes a first guiding plate and a second guiding plate. ... Alstom Technology Ltd

03/17/16 / #20160076773

Apparatus for an assembly tool for mounting or dismantling, replacement and maintenance of a component of an engine

The present invention concerns of an apparatus as a part of an assembly tool or an assembly tool with additional frame for mounting or dismantling, replacement and maintenance of a component of an engine. The apparatus includes an eccentric hook having means to adjust, discretely or operatively communicating with a crane or an independently operated assembly tool. ... Alstom Technology Ltd

03/17/16 / #20160076665

Valve with small tank penetration diameter

A valve and a method of using the valve to clean a filter unit are provided. As such, the valve is a small vessel penetration diameter cleaning valve that requires no or less installation welding and a reduced pressure vessel wall thickness while not jeopardizing cleaning valve reliability or efficiency. ... Alstom Technology Ltd

03/17/16 / #20160076454

Sealing arrangement at the interface between a combustor and a turbine of a gas turbine and gas turbine with such a sealing arrangement

A sealing arrangement is provided at the interface between a combustor and a turbine of a gas turbine. The turbine includes guiding vanes at its inlet. ... Alstom Technology Ltd

03/17/16 / #20160076390

Mounting and sealing arrangement for a guide vane of a gas turbine

The invention relates to a mounting and sealing arrangement for a guide vane of a gas turbine, which includes a vane carrier for carrying said vanes in a ring-like arrangement, whereby the vanes each comprise an airfoil and an outer diameter platform. The thermal stress is reduced and lifetime improved by providing a separate intermediate mounting element between the vane carrier and the outer diameter platform of each of the vanes, and mounting the intermediate mounting element with an outer side on the vane carrier, whereby the intermediate mounting element abuts with an inner side on the outer diameter platform in a sealing fashion.. ... Alstom Technology Ltd

03/17/16 / #20160074798

Valve with small vessel penetration diameter

The invention refers to an arrangement of a valve and a pressure vessel. The valve has a housing with at least an opening, a plunger slideably positioned in the housing, a control mechanism to cause plunger movement. ... Alstom Technology Ltd

03/10/16 / #20160072407

Converter

A voltage source converter includes a converter limb having limb portions separated by an ac terminal and extending between dc terminals, each limb portion including a primary switching element to switch the limb portion into and out of circuit. The converter further includes an auxiliary limb. ... Alstom Technology Ltd

03/10/16 / #20160069568

Dilution gas or air mixer for a combustor of a gas turbine

The invention referring to a sequential combustor arrangement including a first burner, a first combustion chamber, a mixer arrangement for admixing a dilution air 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 is adapted to guide combustion gases in a hot gas flow path extending between the first combustion chamber. ... Alstom Technology Ltd

03/10/16 / #20160069562

System and method for reducing emissions from a boiler

A system and method for reducing emissions from a boiler. A boiler generally has a combustion area. ... Alstom Technology Ltd

03/10/16 / #20160069185

Method for reconditioning a hot gas path part of a gas turbine

A method for reconditioning a hot gas path part of a gas turbine in order to flexibly adapt an operation regime of said gas turbine for subsequent operation intervals is disclosed. The method includes providing a hot gas path part to be reconditioned; removing a predetermined area of said hot gas path part, resulting in a cutout at said hot gas path part; and manufacturing a coupon for being inserted into said cutout to replace said removed area of said hot gas path part. ... Alstom Technology Ltd

03/03/16 / #20160061446

Combustion system

A combustion system having a furnace defining a combustion chamber includes a first burner disposed at an upper elevation of the combustion chamber and a second burner and a third burner disposed at a lower elevation of the combustion chamber. A first duct extends vertically to convey therein a fuel flow of gas and pulverized fuel. ... Alstom Technology Ltd

03/03/16 / #20160061114

Method for controlling a gas turbine

The invention relates to a method for controlling a gas turbine, operating with an integral fuel reactivity measurement concept. In order to fast determine a safe operation range of the gas turbine with respect to flashback and blow-out, the method includes deducing the fuel composition and therefore the fuel reactivity by combined measurements of (n−1) physico-chemical properties of a fuel mixture with n>1 fuel components, for deriving the concentration of one component for each physico-chemical property of the fuel gas mixture or for determining of a ratio of the fuels with known compositions and adjusting at least one operation parameter of the gas turbine at least partially based on the determined property of the fuel gas mixture entering the combustors. ... Alstom Technology Ltd

02/25/16 / #20160055997

Self-deicing lightweight conductor

The invention relates to a conductor (2) for electrical equipment, the conductor comprising at least one hollow section member (2) of electrically conductive material that is elongate along a longitudinal axis (y), the conductor having an outside surface in which at least a portion forms corrugations (23, 24) in a plane perpendicular to the longitudinal axis. The conductor may advantageously form a movable contact (blade) (2) of a high voltage disconnector.. ... Alstom Technology Ltd

02/25/16 / #20160054730

Apparatus and method for controlling at least one operational parameter of a plant

A method for controlling at least one operational parameter of a plant (1) having a combustion unit (3) can include estimating a status of at least one operational variable of the plant to identify an estimated value for the operational variable. For each operational variable, the estimated value for the operational variable can be compared with a measured value of the operational variable to determine an uncertainty value based on a difference in value between the measured value and the estimated value for the operational variable. ... Alstom Technology Ltd

02/25/16 / #20160053996

Combustion and flue gas treatment system and sox removal unit

The combustion and flue gas treatment system includes a furnace for combusting a fuel with an oxidizer generating a flue gas, ducting for the flue gas connected to a nox removal unit and a sox removal unit, and a recirculation line for recirculating a part of the flue gas back to the furnace. The sox removal unit is located upstream of the nox removal unit with reference to the flue gas flow. ... Alstom Technology Ltd

02/25/16 / #20160051925

Ammonia capturing by co2 product liquid in water wash liquid

A method for capturing ammonia present in combustion flue gas subjected to carbon dioxide removal using a water wash unit included in a chilled ammonia process. The method includes combining a co2 loaded liquid and a wash water liquid to form a co2 enriched wash water liquid that is then brought into contact with the combustion flue gas.. ... Alstom Technology Ltd

02/18/16 / #20160049852

Tool and method for maching a winding

The present disclosure relates to a tool and a method for machining a winding for an electric machine and a use of such a tool. Disclosed is a tool for machining a winding for an electric machine, with a hammer or a movable wheel supported by arms, the hammer or the movable wheel are suitable for engaging and exerting pressure to the winding to modify the height h and/or the surface structure of the winding, whereas the hammer conducts a bidirectional movement in the axial direction of the tool, whereas the wheel conducts a bidirectional movement in the axial direction of the tool and/or a rotating movement, and whereas the tool further comprises a heat source to apply heat to the winding.. ... Alstom Technology Ltd

02/18/16 / #20160048149

Current limiter

A current limiter for selectively limiting a rate of change of current in a dc electrical network may include a first electrical block including an inductive element and a second electrical block including a bidirectional switch. The first electrical block is connected in parallel with the second electrical block between first and second terminals, and the first and second terminals are connectable to the dc electrical network. ... Alstom Technology Ltd

02/18/16 / #20160047769

Steam wetness measurement device

Provided is a measurement system for measuring wetness of the gas phase of a two phase flowing fluid. The measurement system includes a container for containing the fluid flow having an inner surface with an average cross sectional area, a liquid film measurement device adapted to measure a flowrate of a liquid film of the two phase fluid through the container, an electrical capacitance tomography device that has a plurality of electrodes located in the container, and a computer adapted to calculate the flowrate of the liquid film in the container. ... Alstom Technology Ltd

02/18/16 / #20160045864

Method and system for nox removal

A method for removing nox from flue gas by scr includes supplying a reagent for the scr reaction of nox into the flue gas, then contacting the flue gas with a catalyst. Supplying the reagent includes supplying a less than stoichiometric amount of reagent, and after contacting the flue gas with a catalyst a final nox removal step is provided.. ... Alstom Technology Ltd

02/11/16 / #20160040885

Sequential combustion with dilution gas

An exemplary sequential combustor arrangement includes 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 at least three groups of injection tubes 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. ... Alstom Technology Ltd

02/04/16 / #20160033321

Method and system for monitoring sub-synchronous torsional oscillations of a shaft line of a steam turbine

A method for monitoring sub-synchronous torsional oscillations of a shaft line of a steam turbine includes measuring a rotational speed of said shaft line over a period of time and generating, from the measured rotational speed, a signal representative of said rotational speed over said period of time. The method further includes performing a spectrum analysis on said signal to determine, for at least one given frequency, an amplitude of variation of said rotational speed at said given frequency, comparing said amplitude with at least one predetermined amplitude threshold for said frequency, and generating an alert signal if said amplitude exceeds at least one predetermined amplitude threshold.. ... Alstom Technology Ltd

02/04/16 / #20160032784

Method for low load operation of a power plant with a once-through boiler

The once-through boiler includes a water supply and at least an economizer, an evaporator superheater. No valves are provided between the economizer, the evaporator and the superheater. ... Alstom Technology Ltd

01/28/16 / #20160024970

Compressor assembly for gas turbine

A compressor assembly, and more in general relates to a compressor for a gas turbine providing a solution that teaches to locate within a cavity formed by the outer casing of the compressor and the inner vane carrier a separator element, or membrane, such to divide the cavity into two sub-cavities. This advantageously results in a more flexible design with respect to the positioning of the flange blow-off extractor and to the cavity sizing, as the flange position is not necessarily the boundary for the flow anymore as it would be without the separator element.. ... Alstom Technology Ltd

01/21/16 / #20160020587

Method of extracting a jacket of a gas insulated substation (gis) under a metal casing

The invention relates to a removable stabilizer for a spacer casing (24a-24f) of an electrical installation of the gis type (20), the spacer casing (24a-24f) comprising a first opening (33) as well as a conductor (30b) provided with a bore (34), the removable stabilizer (29) comprising a plug (29a) configured to be introduced via the first opening (33) into the spacer casing (24a-24f), the plug being designed to penetrate into the bore (34) of the conductor (30b) so as to block said conductor (30b) against moving in translation after said spacer casing (24a-24f) has been put to atmospheric pressure.. . ... Alstom Technology Ltd

01/21/16 / #20160020586

Resistive element, rc module, and rc voltage divider for a high-voltage electrical substation insulated by a dielectric fluid

The invention provides an rc module (20) for an rc voltage divider for an electrical substation insulated by a dielectric fluid. The rc module (20) comprises first and second plane conductive supports (210a,b) separated from each other in order to co-operate with the dielectric fluid to form a capacitor, when the module equips an electrical substation. ... Alstom Technology Ltd

01/21/16 / #20160018111

Method of operating a gas turbine with staged and/or sequential combustion

The invention concerns a method of operating a gas turbine with staged and/or sequential combustion. The burners of a second stage or a second combustor are singularly and sequentially switched on during loading and switched off during de-loading. ... Alstom Technology Ltd

01/14/16 / #20160013729

Power converter comprising an architecture having nonaligned arms

. . The invention mainly provides a power converter (3) including a positive converter bridge (p+) and a negative converter bridge (p−), the converter bridges being of the diode bridge type and being connected in parallel, each converter bridge including a first series of arms of components connected to the phases of the first secondary of the transformer (2) and a second series of arms of components connected to the phases of the second secondary of the transformer (2), said power converter being characterized in that at least one series of arms of components includes arms (b1, b2, b3) disposed relative to one another in such a manner as not to be aligned in the same plane.. . ... Alstom Technology Ltd

01/14/16 / #20160013721

Device for controlling and balancing currents for dc/dc converters

The invention provides a control device for regulating and balancing currents, for dc/dc converters, between first and second voltage sources, the device comprising: n converters (c1, c2, . . ... Alstom Technology Ltd

01/14/16 / #20160013649

Control circuit

The present disclosure relates to control circuits. One circuit includes first and second primary terminals for connection to first and second power transmission lines and a current transmission path extending between the primary terminals and having current transmission path portions separated by a third primary terminal. ... Alstom Technology Ltd

01/14/16 / #20160012938

Connection bar architecture for high-power converter

The invention mainly provides a busbar (bs1) designed to provide an electrical connection between a high-power converter (r) and a disconnector (s), said busbar being characterized in that the busbar (bs1) has a shape defining, at least in part, at least one hollow portion (10).. . ... Alstom Technology Ltd

01/14/16 / #20160010867

Sequential combustor arrangement with a mixer

The invention refers to a sequential combustor arrangement having 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 of injection tubes 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. ... Alstom Technology Ltd

01/14/16 / #20160010856

Axial swirler

The present invention relates to an axial swirler, in particular for premixing of oxidizer and fuel in gas turbines. The axial swirler for a gas turbine burner includes a plurality of swirl vanes with a streamline cross-section being arranged around a swirler axis and extending in radial direction between an inner radius rmin and an outer radius rmax. ... Alstom Technology Ltd

01/14/16 / #20160010495

Method for the control and protection of a gas turbine and gas turbine using such method

In a method for the control and protection of a gas turbine a gas turbine performance and lifetime indicative process quantity is estimated from a set of available process signals. The gas turbine performance and lifetime indicative process quantity is simultaneously evaluated by two different estimation methods, whereby a first estimation method has a high prediction accuracy, and a second estimation method has a high availability, a continuous adaptation of the second estimation method is conducted in order to align the output signals of the two estimation methods, and in case of a failure detected in the supervision of the first estimation method the adaptation of the second estimation method is stopped, and the output of the first estimation method is switched to the output of the second estimation method.. ... Alstom Technology Ltd

01/07/16 / #20160003473

Boiler and a method for nox emission control from a boiler

A boiler includes an enclosure having at least a supply for fuel and oxidizer and at least a supply for a sncr reagent. The supply for the sncr reagent includes at least a regulation valve for the sncr reagent. ... Alstom Technology Ltd








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