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Doosan Corporation patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "D" | Doosan Corporation-related inventors


 new patent  Pipe testing apparatus and method

A pipe testing apparatus is described. The apparatus comprises two pipe end holders, respectively to hold a first and a second end of a pipe section under test; a reeling former; a straightening former; and a translator to effect relative translational movement of the pipe and the reeling former and of the pipe and the straightening former to cause the pipe to move selectively into and out of contact with and to apply a contact force against one or other of the reeling former and the straightening former. ... Doosan Corporation

 new patent  Supercritical co2 generation system for parallel recuperative type

A supercritical co2 generation system for a parallel recuperative type capable of improving generation efficiency and saving costs is disclosed. According to the supercritical co2 generation system according to the exemplary embodiment, a compression ratio of a turbine can be increased by arranging recuperators in parallel, thereby maximizing work of the turbine.. ... Doosan Corporation

 new patent  Hot mold steel for long life cycle die casting having high thermal conductivity and method for preparing the same

According to an embodiment, the described hot mold steel may be excellent in high thermal conductivity to decrease the temperature difference in materials at high temperature, thereby making heat-checking properties excellent. When the hot mold steel according to the present disclosure is used for die casting, the cooling rate of the product produced using the die casting is quick, thereby improving the physical properties of the produced product and shortening the cooling time to improve productivity. ... Doosan Corporation

Fault signal recovery apparatus and method

A fault signal recovery apparatus and method for collecting signals obtained in a plant and recovering normal signals from fault signals contained in the measured signals through a machine learning method includes receiving an input x including only normal signals for a plurality of tags, an input u including fault signals for a first group of tags among the plurality of tags and normal signals for a second group of tags, and an input s having information on the first group of tags including fault signals, and estimating and recovering normal signals for the first group of tags including fault signals based on feature information f, recovery model information p, and ensemble learning.. . ... Doosan Corporation

Gas turbine and method for replacing bearing thereof

A gas turbine and a method for replacing a bearing thereof to easily adjust a clearance of a bearing housing and a bearing covering a tie rod, such that the bearing can be easily replaced is disclosed.. . ... Doosan Corporation

Gas turbine

A gas turbine includes a compressor rotor having a plurality of compressor rotor disks installed therein; a turbine rotor having a plurality of turbine rotor disks installed therein; a connection part connecting the compressor rotor and the turbine rotor to each other; a tie rod extended through the central axes of the plurality of compressor rotor disks and the central axes of the plurality of turbine rotor disks; and a clamping member forced onto the tie rod in the an axial direction of the tie rod so as to be rotated with the tie rod, and relatively rotated with respect to the an inner circumferential surface of the connection part, thereby damping vibration and shock.. . ... Doosan Corporation

Flow guide structure for casing flange, and casing and turbomachine having the same

A flow guide structure for a casing flange, and a casing and a turbomachine having the same, include a flange portion connecting an upper casing and a lower casing and a flow guide positioned at the flange portion to guide fluid to flow close to the flange portion, whereby steam flow resistance is reduced around an inner casing flange of a turbine and the steam flow is smoothed.. . ... Doosan Corporation

Structure for cooling rotor of turbomachine, rotor and turbomachine having the same

The present invention relates to a structure for cooling a turbomachine's rotor part and a rotor and a turbomachine having the same. The structure for cooling a turbomachine's rotor part includes: a dovetail joint part disposed along an outer circumferential surface of a rotor wheel and having a plurality of mounting grooves in which dovetails of buckets are mounted and cooling slots disposed along the outer circumferential surface of the rotor wheel on the dovetail joint part and having a cooling fluid flowing therethrough.. ... Doosan Corporation

Flocculation basin inclusion or exclusion type water treatment apparatus using dissolved air flotation

Disclosed herein is a flocculation basin inclusion ion type water treatment apparatus using dissolved air floatation which includes: a flocculation basin which forms flocs by mixing a coagulant inserted into feed water and grows up the flocs; a contact zone to which fine bubbles are induced through a nozzle disposed at a lower part; and a separation zone which removes the flocs when the fine bubbles are attached to the flocs and the flocs float on the surface of water, the flocculation basin inclusion type water treatment apparatus including: a fine bubble forming part.. . ... Doosan Corporation

Digital protection system for nuclear power plant

A digital protection system is provided. The digital protection system may include: a process protection system including at least two channels, each channel including a first bistable logic controller and a second bistable logic controller which are independent and different from each other, the first bistable logic controller and the second bistable logic controller outputting bistable logic results; a reactor protection system including at least two trains, each train including a first coincidence logic controller and a second coincidence logic controller which are independent and different from each other, the first coincidence logic controller and the second coincidence logic controller outputting coincidence logic results by receiving the bistable logic results from the process protection system; and an initiation circuit normally operating or stopping a reactor according to the coincidence logic results received from the reactor protection system.. ... Doosan Corporation

Membrane bioreactor system using reciprocating membrane

The present invention relates to membrane bioreactor (“mbr”) system that includes a mechanical membrane reciprocation system to reduce or eliminate membrane fouling. The disclosed mbr system can be operated with higher flux and lower fouling than mbr systems using air scouring. ... Doosan Corporation

Submerged membrane filtration system using reciprocating membrane

Provided is a reciprocating submerged membrane filtration apparatus including: a membrane tank comprising a submerged membrane and configured to intake influent wastewater to be treated, the influent wastewater being filtered through the submerged membrane to produce treated water; and a reciprocation apparatus configured to move the membrane to create an inertia force which shakes foulants off from the submerged membrane under oxygen-deficient conditions, wherein the submerged membrane comprises a microfiltration (mf) membrane or an ultrafiltration (uf) membrane.. . ... Doosan Corporation

Gas turbine

A gas turbine comprises a strut assembly including an inner ring; an inclined member including a first end connected to the inner ring, a second end positioned opposite the first end, and a flange extending radially inward from the second end; an oil sump mounted to the second end or the flange; a thrust bearing fixed to the oil sump; and a thrust collar extending radially from a rotor, wherein the inclined member has an aperture portion formed therein, the aperture portion is positioned in an upper portion of a region between the thrust bearing and a journal bearing, and the aperture portion has a width and a circumferential length greater than at least the journal bearing. The gas turbine has the feature that the journal bearing is easily withdrawn and the total weight of the gas turbine is reduced.. ... Doosan Corporation

Damping liner cap and gas turbine combustor

A gas turbine combustor includes a combustion chamber, a liner adjacent to the combustion chamber, a liner cap capping the combustion chamber, and a swirler cup passing through the liner cap. The liner cap includes a first cavity having a first inlet receiving an air, a second cavity having a first outlet facing the combustion chamber, and an impingement plate between the first cavity and the second cavity. ... Doosan Corporation

04/05/18 / #20180094547

Hybrid power generation system

Disclosed herein is a hybrid power generation system. The hybrid power generation system may enhance efficiency of production of electricity and heating heat by integrating power generation using supercritical carbon dioxide (co2) and cogeneration.. ... Doosan Corporation

04/05/18 / #20180094406

Control system for construction machinery and control method for construction machinery

A control system for construction machinery includes a first hydraulic pump, first and second actuators connected to the first hydraulic pump through first and second hydraulic lines respectively, first and second control valves installed in the first and second hydraulic lines respectively and configured to control operations of the first and second actuators, and a controller configured to adjust a spool displacement amount of the first control valve according to an amount of working oil to be supplied to the first actuator when the first actuator performs a single or multiple operation by self-load.. . ... Doosan Corporation

03/29/18 / #20180087408

Hybrid type power generation system

A hybrid type power generation system in which some of components of a cogeneration system are combined with a supercritical co2 power generation system, may increase an energy output by combining some of the components of the cogeneration system with the supercritical co2 power generation system.. . ... Doosan Corporation

03/15/18 / #20180077574

Data transmission apparatus and method

A data transmission method includes requesting, by a plurality of transceivers, an authentication to a main controller, transmitting an authentication acceptance signal and separate decoding keys from the main controller to the transceivers, transmitting an encoded data bundle from the main controller to the transceivers and extracting, by each of the transceivers, some of data in the at least one encoded data bundle using the decoding key.. . ... Doosan Corporation

03/15/18 / #20180073969

Apparatus and method for determining chemical input

An apparatus and method for determining an amount of chemical input, and more particularly to an apparatus and method for determining the amount of a chemical to be added, which is necessary to achieve target water quality, wherein a required chemical concentration can be accurately calculated based on the temperature of the water and the target turbidity of the water includes an information-receiving unit configured to receive at least one of environmental information, chemical information, and water-quality information of the water present in a specific area and a chemical input determination unit configured to derive a multiple regression equation based on the received environmental information, chemical information, and water-quality information and to determine the future input of a chemical that is added to satisfy a target turbidity of the water present in the specific area based on the multiple regression equation.. . ... Doosan Corporation

03/15/18 / #20180073728

Downshot burner

A burner outlet set for a downshot firing burner is described comprising a first outlet array having at least one primary outlet, and at least one vent air outlet disposed either side of the primary outlet in an array direction of the first outlet array; second and third outlet arrays each comprising an array of secondary air outlets, respectively disposed either side of the a first outlet array. A burner system with a plurality of such burner outlet sets, a burner arch configured for downshot firing and having one or more such burner sets, and a combustion furnace with one or more such arches are also described.. ... Doosan Corporation

03/15/18 / #20180073724

Influence analyzing apparatus for analyzing influence of combustibles

A apparatus may extract temperature for each region of a feed water and steam system of a thermoelectric power plant with respect to a combustible combination including one or more combustibles, extract one or more vectors for each region from the temperatures extracted for each region, generate one or more combustible clusters, each cluster including one or more combustible combinations having similar properties from the extracted vectors, and extract a characteristic component of a combustible combination that increases or decreases a boiler performance index from among one or more combustible combinations included in the one or more combustible clusters.. . ... Doosan Corporation

03/15/18 / #20180073555

Thrust bearing assembly

Provided is a thrust bearing assembly including a casing, a supporting ring positioned within said casing, a leverage mechanism housed within said casing, tilting pads for contacting rotor, supporting discs connecting said leverage mechanism with said tilting pads via openings in said casing, wherein the leverage mechanism includes a plurality of first levering plates and an equal number of second levering plates, the first and second levering plates forming an endless overlapping arrangement within said casing, each first levering plate touching at contact surfaces two second levering plates and vice versa, wherein the levering plates are preferably substantially arcuate-shaped, and wherein at least all first levering plates or at least all second levering plates are tiltingly positioned on supporting pins, whereas the levering plate includes a recess with a ball-shaped protrusion within the recess, and the supporting pin includes a ball-shaped socket fitting the ball-shaped protrusion of the levering plate.. . ... Doosan Corporation

03/15/18 / #20180072588

Apparatus and method for analyzing influence variable on membrane fouling of seawater desalination system

This disclosure relates to an apparatus and method for analyzing an influence variable on membrane fouling of a seawater desalination system, wherein influence variables other than variables having a low degree of influence, among variables affecting the membrane, are selected, and the influence thereof on membrane fouling is used to derive an equation. The apparatus includes a variable storage unit configured to store variables affecting membrane fouling of a seawater desalination system, a dominant variable selection unit configured to select at least one dominant variable among the variables through at least one algorithm, and an equation derivation unit configured to derive a specific equation based on a correlation between the selected dominant variable and the membrane fouling.. ... Doosan Corporation

03/08/18 / #20180067010

Apparatus and method for detecting abnormal vibration in rotor

An apparatus for detecting abnormal vibrations of a rotor includes a vibration information receiver configured to receive at least one type of information among vibration information regarding one or more dimensions distinguishing locations and directions of the rotor and rotor rotation information including a number of rotations of the rotor, a multivariate management index calculator configured to calculate multivariate management indexes from the vibration information regarding the one or more dimensions, and an operation index extractor configured to determine an abnormality in vibration characteristics of the rotor when a hotelling's t-squared value is greater than an upper control limit and extracts an operation index causing the abnormality in the vibration characteristics of the rotor from one or more operation indexes. An abnormal vibration in a rotor is detected based on four-dimensional (4d) vibration information distinguishing locations and directions of the rotor.. ... Doosan Corporation

03/08/18 / #20180066417

Method of controlling a main control valve of an excavator and apparatus for performing the same

In a method of controlling a main control valve of an excavator, when speeds of a boom cylinder and an arm cylinder is increased by handling a boom joystick and an arm joystick, a second arm control spool between a first hydraulic pump and the arm cylinder may be closed. A first boom control spool between the first hydraulic pump and the boom cylinder may be opened to supply a first flux generated from the first hydraulic pump to the boom cylinder. ... Doosan Corporation

03/01/18 / #20180062184

Boron phosphate matrix layer

An illustrative example embodiment of a fuel cell includes a cathode electrode, an anode electrode, and a porous matrix layer between the electrodes. The porous matrix layer includes pores and solids. ... Doosan Corporation

02/22/18 / #20180053960

Fuel cell manifold assembly including a self-supporting polymer material liner

An illustrative example embodiment of a fuel cell manifold device includes a self-supporting polymer material liner body including a generally planar primary wall and a plurality of side walls. The side walls respectively extend generally perpendicularly from the primary wall. ... Doosan Corporation

02/22/18 / #20180053954

Preventing migration of liquid electrolyte out of a fuel cell

An illustrative example cell stack assembly includes a plurality of fuel cells that each include a cathode electrode, an anode electrode and a matrix for holding a liquid acid electrolyte. The electrodes have lateral outside edges that are generally coplanar. ... Doosan Corporation

02/22/18 / #20180053900

Organic compound and organic electroluminescent element comprising same

The present invention relates to a novel organic compound, and an organic electroluminescent element having improved characteristics, such as luminous efficiency, driving voltage, and lifespan, by containing the novel organic compound in one or more organic material layers.. . ... Doosan Corporation

02/22/18 / #20180051570

Gas turbine blade

A gas turbine blade according to an embodiment of the present invention includes a turbine blade provided in a gas turbine; and a plurality of film coolers formed in a section from a leading edge to a trailing edge of the turbine blade, in which the film cooler includes a cooling channel through which cooling air is introduced and formed in an oval shape; and an outlet through which the cooling air passing through the cooling channel is discharged and extending from an extended end of the cooling channel toward an outer side thereof and formed in an oval shape.. . ... Doosan Corporation

02/15/18 / #20180044891

Control system for construction machinery

A control system for construction machinery includes a main control valve installed in a hydraulic line between a hydraulic pump and actuators, and including a first group of electro proportional pressure reducing valves outputting a secondary pressure in proportion to an external pressure command signal to a first spool for controlling a first group of actuators of the actuators, and a second group of electro proportional pressure reducing valves outputting a secondary pressure in proportion to an external pressure command signal to a second spool for controlling a second group of actuators of the actuators, a first pressure sensor configured to detect the secondary pressure outputted from the first group of electro proportional pressure reducing valves and a second pressure sensor configured to detect the secondary pressure outputted from the second group of electro proportional pressure reducing valves, and a controller configured to output pressure command signals to the electro proportional pressure reducing valves corresponding to a manipulation signal of the construction machinery, and configured to compare the secondary pressures detected by the first and second pressure sensors and the pressure command signals to determine to determine whether or not the electro proportional pressure reducing valves fail.. . ... Doosan Corporation

02/08/18 / #20180038333

Construction machine starting assist system

An exemplary embodiment of the present disclosure relates to a construction machine starting assist system including: an engine of a construction machine; an input unit which receives a key-on signal and a key-off signal of the engine; a hydraulic pump which is operated by the engine; an actuator which is operated by hydraulic oil discharged from the hydraulic pump; a regeneration valve which is switched so that a part or an entirety of the hydraulic oil returned from the actuator and a part or an entirety of the hydraulic oil discharged from the hydraulic pump are supplied for regeneration; an accumulator which is charged with the hydraulic oil supplied from the regeneration valve; a charging valve which is controlled so that the hydraulic oil is discharged from the accumulator when the key-on signal is inputted into the input unit; and a hydraulic motor which is operated by the hydraulic oil discharged from the charging valve, in which the hydraulic motor is connected to the engine and assists in starting the engine.. . ... Doosan Corporation

02/08/18 / #20180037478

Capacitive deionization electrode module and water treatment apparatus and method capable of saving energy using the same

The present invention relates to a capacitive deionization electrode module, a water treatment apparatus and method capable of saving energy using the same, and more particularly, to a capacitive deionization electrode module that is capable of improving durability, suppressing fouling, and increasing the amount of incoming water treated and to a water treatment apparatus and method that is capable of recovering and reusing energy generated while a saline adsorbed to the capacitive deionization electrode module is being desorbed through an energy recovery device, thereby saving the energy.. . ... Doosan Corporation

02/01/18 / #20180029136

Machine tool

The present invention relates to a machine tool including a ram spindle and a tool holder, and provides a machine tool comprising: a tool holder including at least two inserts; and a ram spindle capable of fixing the tool holder in a clamped state or rotating the tool holder in order to change the position of the insert, such that the position of the insert can be quickly changed, thereby enabling an improvement in productivity and precision and a reduction in product costs.. . ... Doosan Corporation

02/01/18 / #20180028945

Fiber filtering apparatus

A fiber filtering apparatus includes: an enclosure including an upper box and a lower box communicating with the upper box; a strainer installed in the upper box along a longitudinal direction; a plurality of fiber yarn media configured to be fixed to upper and lower fixing means each coupled to upper and lower parts of the strainer; a plurality of fiber ball media configured to be embedded in the lower box to form a second filtering layer; a first pipe configured to be formed on one side wall on the lower part of the upper box and introduced with raw water during filtration and drain backwashing water during backwashing; and a second pipe formed on one side wall on a lower part of the lower box and drain filtered water during the filtration and introduced with washing water during the backwashing.. . ... Doosan Corporation

01/18/18 / #20180019029

Apparatus and system for simulating maintenance of reactor core protection system

A system for simulating maintenance of a reactor core protection system that has at least two or more channels, includes: a simulation signal generation unit for generating a simulation state signal including a normal state or an abnormal state, a communication unit connected to each of the channels of the reactor core protection system to transmit the state signal to the channel, and a control unit for receiving a result signal output from the channel in response to the input simulation state signal and confirming whether the reactor core protection system normally determines a reactor core state by analyzing the result signal.. . ... Doosan Corporation

01/18/18 / #20180015551

Five-axis processing machine

The present invention relates to a five-axis machining apparatus. A five-axis machining apparatus according an embodiment of the present invention includes: a column; a slide coupled to the column so as to be slidable in a vertical direction; a main spindle drive unit supported on the back of the slide; and a tiltable spindle module detachably coupled to the front of the slide, and configured to receive rotation power from the main spindle drive unit.. ... Doosan Corporation

01/18/18 / #20180015499

System for coating heat transfer tube for condenser

A system for coating a heat transfer tube for a condenser is disclosed. The system simplifies a process of coating the heat transfer tube, and is able to uniformly coat a plurality of heat transfer tubes. ... Doosan Corporation

01/11/18 / #20180013072

Organic electroluminescent element

The present invention provides an organic electroluminescent element which comprises: an anode; a cathode; and an organic layer interposed between the anode and the cathodes, wherein the organic layer comprises one or more types of layer from the group consisting of a hole-injection layer, hole-transport layer, light-emitting layer, lifetime enhancement layer, electron-transport layer, and electron-injection layer.. . ... Doosan Corporation

01/11/18 / #20180010461

Disk assembly and turbine including the same

A disk assembly may include: a first disk engaged with a compressor section of a gas turbine; a second disk engaged with a turbine section of the gas turbine; and a third disk disposed between the first and second disks, and transferring torque applied to the second disk to the first disk. The third disk has a plurality of legs formed on an inner circumferential surface thereof, the plurality of legs being in contact with an outer circumferential surface of a tie bolt of the gas turbine.. ... Doosan Corporation

01/04/18 / #20180003219

Ball-socket type tilting pad journal bearing

A ball-socket type tilting pad journal bearing configured to reduce friction between a tilting pad and a pivot includes a housing body, a plurality of tilting pads disposed inside the housing body, and a plurality of pivots fixed on an inner surface of the housing body. An oil collection unit for collecting oil is provided in at least one of an outer circumferential surface of each of the pivots and a socket of each of the tilting pads.. ... Doosan Corporation

01/04/18 / #20180003062

Gas turbine blade

A gas turbine blade includes a plurality of guide ribs spaced apart from each other in a movement direction of a cooling fluid in order to guide movement of the cooling fluid flowing along a cooling passage formed in the turbine blade, and an opening formed in each of the guide ribs in order to guide a portion of the cooling fluid to a bottom of the cooling passage between the guide ribs or to side walls adjacent to the bottom.. . ... Doosan Corporation

12/28/17 / #20170370582

Transition part assembly and combustor including the same

Disclosed herein are a transition part assembly which is improved in efficiency of cooling a high-temperature region formed on a side surface of a transition part of a gas turbine, and a combustor including the same. The transition part assembly includes a transition part, a collision sleeve, a cooling hole, and a guide which is formed inside the collision sleeve so as to guide air to a side surface of the transition part.. ... Doosan Corporation

12/28/17 / #20170370252

Apparatus for reducing windage loss of steam turbines

An apparatus for reducing windage loss of steam turbines according to an embodiment of the present disclosure is to reduce or minimize damage to a blade caused by a rise in temperature at an outlet stage of a high-pressure turbine.. . ... Doosan Corporation

12/28/17 / #20170368482

Multistage fiber filtering apparatus capable of selectively filtering

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.. . ... Doosan Corporation

12/21/17 / #20170363289

Air flow guide cap and combustion duct having the same

An air flow guide cap for inducing an air flow into a through hole of the floor includes: an upper surface upwardly inclined relative to a horizontal plane; and a wall surface downwardly extending along edges of the upper surface except the edge adjacent to an air inlet.. . ... Doosan Corporation

12/21/17 / #20170363286

Spray nozzle for attemperators and attemperator including the same

Disclosed herein are a spray nozzle for an attemperator and an attemperator including the spray nozzle. An attemperator according to an embodiment includes: a steam transfer pipe through which steam is transferred; a fixed pipe which is fixed to an outer surface of the steam transfer pipe; and a spray nozzle, which is coupled to the fixed pipe, disposed in the steam transfer pipe and configured to spray cooling water into the steam transfer pipe. ... Doosan Corporation

12/21/17 / #20170363072

Vibration monitoring and diagnosing system for wind power generator

Disclosed herein is a vibration monitoring and diagnosing system for monitoring conditions of a wind power generator and diagnosing a defective portion thereof using vibration characteristics obtained from acceleration sensors mounted to the wind power generator. A vibration-based defect detecting method may include: collecting vibration data of the wind power generator using the plurality of sensors; extracting a first characteristic value of a time domain based on the vibration data; extracting characteristic values in one or more frequency bands for a location of each sensor in a frequency domain or an envelope frequency domain if the first characteristic value is greater than a preset alarm setting value; and determining that a defect is present when at least one characteristic value of the characteristic values is greater than a preset normal value.. ... Doosan Corporation

12/21/17 / #20170363002

Co2 power generation system

A co2 power generation system includes a furnace to burn fuel, a turbine operated by a working fluid supplied thereto, the working fluid being heated by heat generated in the furnace, a recuperator exchanging heat with the working fluid passing through the turbine, a cooler to cool the working fluid passing through the recuperator, and a compressor to compress the working fluid passing through the cooler, wherein the working fluid passing through the compressor is circulated to the furnace, and the working fluid is supercritical co2.. . ... Doosan Corporation

12/14/17 / #20170357237

Position controller for controlling a rotation center of a tilting head

Disclosed is a position controller for a tilting head in a machining center. The position controller includes an offset attachment having a body combined to the tilting head and a spherical contact secured to the body, an offset detector built in the machining center such that the offset detector move out into a process area of the machining center and automatically detects a tool offset from a contact point with the spherical contact, a storing unit individually storing first and second tool offsets by respective rotation positions of the tilting head, and an operator generating a transform offset of the first tool offset by a rotational transform and a center error vector from the transform offset and the second tool offset. ... Doosan Corporation

12/07/17 / #20170352010

Wind farm supervision monitoring system

A wind farm supervision monitoring system includes: a data collection unit configured to collect data about a status monitoring of each wind turbine from at least one site server; an abnormality status detection unit configured to detect an abnormality status of each wind turbine based on the collected data about the status monitoring and issue an alarm; a wind data management unit configured to early detect a fault of each wind turbine and or monitor performance of each wind turbine based on the data about the status monitoring or the data about the abnormality status; and a supervision unit configured to manage a turbine operation status and operation and maintenance of each wind turbine and provide information for establishing an operation and maintenance plan for the detected abnormality status of the wind turbine.. . ... Doosan Corporation

12/07/17 / #20170350370

Wind farm supervision monitoring method

A wind farm supervision monitoring method includes: displaying, by a user interface (ui) unit, a location of the site server on a map along with a dashboard menu, a navigation menu, and an alarm & event menu; collecting, by a data collection unit, data about status monitoring of each wind turbine from the site server; detecting, by an abnormality status detection unit, an abnormality status of each wind turbine based on the data about the status monitoring of each wind turbine and issuing an alarm based on the detecting the abnormality status; providing, by a supervision unit, a turbine operation status of each wind turbine using the dashboard menu, managing operation and maintenance; and establishing, by the supervision unit, an operation and maintenance plan for the detected abnormality status of the wind turbine.. . ... Doosan Corporation

12/07/17 / #20170348632

Scrubber tower of a flue gas purification device

The invention relates to a scrubber tower (also called scrubbing tower, absorption tower, gas-liquid contact device or washing tower) of a flue gas purification device with at least one tray.. . ... Doosan Corporation

11/30/17 / #20170342264

Thermosetting resin composition for frequency, and prepreg, laminated sheet and printed circuit board using same

The present invention related to a thermosetting resin composition for high frequency, the composition containing (a) a polyphenylene ether having two or more unsaturated substituent groups selected from the group consisting of the vinyl group and the allyl group at both ends of the molecular chain thereof, or an oligomer of said polyphenylene ether; (b) three or more different types of cross-linking curing agents; and (c) a flame retardant. The present invention may provide a printed circuit board for high frequency which simultaneously exhibits low dielectric loss characteristic and good moisture-absorption heat resistance, low thermal expansion characteristics, excellent thermal stability, excellent processability, and the like.. ... Doosan Corporation

11/30/17 / #20170341190

Processing unit for a stator bar of a generator and welding method using the same

A processing apparatus for a stator bar of a generator according to an embodiment of the present disclosure may allow a worker to safely and easily perform welding on both ends of a plurality of stator bars to be installed in the generator, thereby improving workability.. . ... Doosan Corporation

11/23/17 / #20170335732

Selective catalyst reduction system and method of controlling temperature of reducing agent injection module

A selective catalytic reduction system includes a reducing agent injection module installed in an exhaust pipe through which an exhaust gas is discharged from an engine and configured to inject a reducing agent into the exhaust pipe, a temperature calculator configured to calculate a temperature of the reducing agent injection module using temperature-related information of the reducing agent injection module, and a temperature controller configured to control to increase a reducing agent injection amount of the reducing agent injection module when the calculated temperature.. . ... Doosan Corporation

10/26/17 / #20170306870

Apparatus and method for controlling egr valve

An apparatus for controlling an egr valve, includes: a measurement unit to measure at least one operation condition of an engine system; a fresh air amount setting unit to set a target amount of fresh air based on the operation condition; a fresh air amount sensor to measure a current amount of fresh air introduced through an intake line; a control calculation unit to set a signal for controlling an opening degree of the egr valve so that the current amount of fresh air follows the target amount of fresh air; and an identifier to simulate an input and an output of the engine system, and output engine system input-output sensitivity which is a ratio of a change rate of the current amount of fresh air to a change rate of the opening degree of the egr valve.. . ... Doosan Corporation

10/05/17 / #20170284367

Apparatus for driving and controlling converters and switching element modules in a wind power generation system

Disclosed herein are an apparatus for driving converters in a wind power generation system, an apparatus for controlling converters in a wind power generation system, an apparatus for driving switching element modules in a wind power generation system, and an apparatus for controlling switching element modules in a wind power generation system. The apparatus for driving converters in a wind power generation system includes a converter control unit configured to drive a plurality of converters connected in parallel between a generator and a grid, wherein the converter control unit sequentially drives the converters one by one when output power of the grid increases and sequentially stops the operations of the converters one by one when output power of the grid decreases.. ... Doosan Corporation

10/05/17 / #20170283190

Rotary table

A rotary table according to the exemplary embodiment of the present disclosure includes a piston 70 having a first tapered portion 72, and a clamp 80 having a second tapered portion 82. When the first tapered portion 72 comes into close contact with the second tapered portion 82 by a movement of the piston 70, a pallet base 30 is fixed to a table base 10, and thus the pallet base 30 is rotated, thereby maintaining a preset posture.. ... Doosan Corporation

09/21/17 / #20170267149

Blade transport vehicle

Disclosed herein is a blade transport vehicle which includes a base, a blade fixing frame disposed on the base, a first moving device disposed at an upper end of the base to move the blade fixing frame in a longitudinal direction of the base, and a second moving device disposed at an upper end of the first moving device to move the blade fixing frame in a width direction of the base.. . ... Doosan Corporation

09/07/17 / #20170255217

Fuel cell power plant with real and reactive power modes

An illustrative example fuel cell power plant includes a cell stack assembly having a plurality of fuel cells configured to generate electricity based on an electrochemical reaction. The power plant includes a capacitor, a plurality of inverters, and at least one controller that is configured to control the plurality of inverters in a first mode and a second mode. ... Doosan Corporation

08/31/17 / #20170247238

Hydraulic circuit for forklift

The present disclosure relates to a hydraulic circuit for a forklift, and more particularly, to a hydraulic circuit for a forklift which is capable of preventing an engine from being stopped due to surge pressure that instantaneously occurs when a lift cylinder reaches an end stroke and thus cannot be operated any further when the lift cylinder is extended. According to the hydraulic circuit for a forklift according to the exemplary embodiment of the present disclosure, which is configured as described above, the accumulator is provided on the hydraulic line through which the working fluid is provided to the lift cylinder, and as a result, the accumulator may quickly absorb surge pressure when the surge pressure is produced in the lift cylinder or the hydraulic line.. ... Doosan Corporation

08/24/17 / #20170244253

Fuel cell power plant cooling network integrated with a thermal hydraulic engine

An illustrative example electrical power generating system includes a fuel cell power plant that is configured to generate electrical power. The fuel cell power plant includes a cell stack assembly including a plurality of fuel cells that are configured to generate electrical power based on a chemical reaction. ... Doosan Corporation

08/17/17 / #20170237260

Energy storage system and management method thereof

An energy storage system includes one or more new and renewable energy power stations generating power with a new or renewable energy source, and an energy storage facility including a plurality of energy storage apparatuses to be charged by one of an external power grid supplying power to a power load and the one or more new and renewable energy power stations, and to be discharged to supply the power to the power load, wherein the plurality of energy storage apparatuses have different charging and/or discharging periods.. . ... Doosan Corporation

08/17/17 / #20170237259

Method for managing power of energy storage system connected with renewable energy

A method for managing power of an energy storage system (ess) connected to renewable energy, the ess including an energy storage device connected to a power grid, a battery management system (bms), a power conditioning system (pcs), and one or more renewable energy generation facilities producing electric energy from renewable energy, the steps including of determining a predicted power consumption amount of a power load and a predicted power production amount of the renewable energy generation facility, predicting power production of the renewable energy generation facility based on the stored type and characteristics information of the renewable energy generation facilities, determining whether the energy storage device is fully charged with the power production from the renewable energy generation facility, and controlling charging/discharging operation of the energy storage device according to a charge/discharge schedule.. . ... Doosan Corporation

08/17/17 / #20170237077

Method of making a fuel cell component

An illustrative example method of making a fuel cell component includes mixing a catalyst material with a hydrophobic binder in a solvent to establish a liquid mixture having at least some coagulation of the catalyst material and the hydrophobic binder. The liquid mixture is applied to at least one side of a porous gas diffusion layer. ... Doosan Corporation

08/17/17 / #20170234266

Waste heat recovery power generation system and flow control method thereof

Provided is a waste heat recovery power generation system, including: a compressor configured to compress a working fluid; a heat exchanger configured to recover waste heat from waste heat gas supplied from a waste heat source, the recovered waste heat heating the working fluid; a turbine configured to be driven by the working fluid heated by the recovered waste heat; and a recuperator configured to exchange heat between an output fluid of the turbine and an output fluid of the compressor to cool the output fluid of the turbine in which the output fluid of the compressor is branched into a first output fluid and a second output fluid of the compressor.. . ... Doosan Corporation

08/17/17 / #20170234170

Supercritical co2 generation system applying plural heat sources

The present invention relates to the supercritical co2 generation system applying plural heat sources. The supercritical co2 generation system applying plural heat sources includes a pump circulating a working fluid; a plurality of heat exchangers heating the working fluid using an external heat source and including a plurality of constrained heat sources having an emission regulation condition of an outlet end thereof and a plurality of general heat sources without the emission regulation condition; a plurality of turbines operated by the working fluid heated by passing through the heat exchangers; and a plurality of recuperators cooling the working fluid passing through the turbines by heat exchange between the working fluid passing through the turbines and the working fluid passing through the pump, wherein the working fluid passing through the turbine is branched into the recuperators, respectively.. ... Doosan Corporation

08/17/17 / #20170234169

Supercritical co2 generation system applying plural heat sources

The present invention relates to a supercritical co2 generation system applying plural heat sources. According to the present invention, each heat exchanger is effectively disposed according to conditions such as an inlet and outlet temperature, capacity, the number, etc. ... Doosan Corporation

08/17/17 / #20170234149

Nozzle box assembly

A nozzle box assembly includes steam inlets, through which working steam is supplied, a torus part connected to the steam inlets so as to form an annular steam path and having an opening portion, in which a part of the front surface of the annular steam path is opened, a bridge ring connected to the front surface of the torus part and having a bridge inside, and a steam path ring connected to the bridge ring so as to provide a path, which is connected to a stage, and provided with a plurality of vanes, wherein the bridge ring and the steam path ring are formed of the coupling of a plurality of divisions, which are divided in the circumferential direction thereof, and the divisions are coupled to the front surface of the torus part.. . ... Doosan Corporation

07/27/17 / #20170209843

Fluidized bed reactor

The invention relates to a fluidized bed reactor, comprising a reaction chamber and a centrifugal separator having a common wall with the reaction chamber.. . ... Doosan Corporation

07/20/17 / #20170207002

Insulation film and flexible flat cable

The present disclosure relates to an insulation film capable of being used in a flexible flat cable(ffc) and having excellent flexibility and mechanical properties, and a flexible flat cable (ffc) using the insulation film. The insulation film provided in the present disclosure has very excellent mechanical properties such as tensile strength, elongation and flexibility, and also has very excellent heat-resisting properties such as contractibility and degeneration caused by heat. ... Doosan Corporation

07/20/17 / #20170204747

Supercritical carbon dioxide power generation system utilizing plural heat sources

Disclosed herein is a supercritical carbon dioxide power generation system utilizing a plurality of heat sources, comprising: a pump for circulating a working fluid; a plurality of heat exchangers for heating the working fluid through an external heat source; a plurality of turbines driven by the working fluid heated through the heat exchangers; and a plurality of recuperators that allow the working fluid passed through the turbines and the working fluid passed through the pump to heat exchange with each other to cool the working fluid passed through the turbine, wherein the plurality of heat exchangers are sequentially disposed from a high temperature region at an inlet end into which waste heat gas stream is introduced up to a low temperature region at an outlet end through which the waste heat gas stream is discharged via a mediate temperature region.. . ... Doosan Corporation

07/20/17 / #20170204733

Nozzle box assembly

A nozzle box assembly includes steam inlets, a torus part, and a steam path ring. Working steam is supplied through the steam inlets. ... Doosan Corporation

07/20/17 / #20170203984

Sewage/wastewater treatment system using granular activated sludge and membrane bio-reactor and sewage/wastewater treatment method using the same

The present disclosure relates to a sewage/wastewater treatment system using granular activated sludge and a membrane bio-reactor and a sewage/wastewater treatment method using the same that are configured to effectively remove pollutants contained in raw water through a granulation tank in which the granular activated sludge is contained and to allow the raw water to be filtered through movable membranes located on the upper portion of the granulation tank. The system includes: an indirect aeration tank adapted to supply air thereto to allow dissolved oxygen contained in raw water to reach a saturation concentration; a granulation tank adapted to allow floating microorganisms contained in the treated water passing through the indirect aeration tank to be granulated and having a sludge blanket formed thereon; and movable membranes located on the upper portion of the granulation tank in such a manner as to be movable in the granulation tank.. ... Doosan Corporation

07/13/17 / #20170198654

Apparatus and method for controlling an engine

An engine control apparatus includes a temperature sensor configured to detect engine-related temperature information, a first calculator configured to calculate a first limit output value of an engine based on the temperature information inputted from the temperature sensor, an oil pressure sensor configured to detect a pressure of engine oil, a second calculator configured to calculate a second limit output value of the engine based on the oil pressure inputted from the oil pressure sensor, and a determiner configured to determine one of the first and second limit output values inputted from the first and second calculators as an optimal limit output value of the engine.. . ... Doosan Corporation

07/13/17 / #20170198597

Structure for multi-stage sealing of turbine

Disclosed herein is a structure for multi-stage sealing of a turbine, including: an annular multi-stage sealing part disposed on an inner circumferential surface of a fixed body and having different heights of at least two stages; a barrier unit disposed at a central side of the multi-stage sealing part on the inner circumferential surface of the fixed body; and an annular multi-stage tooth part disposed to face the multi-stage sealing part or the barrier unit over an outer circumferential surface of a rotating body and provided with a plurality of teeth, having a relative height corresponding to different heights of the multi-stage sealing part or the barrier unit at an interval between the fixed body and the rotating body.. . ... Doosan Corporation

07/13/17 / #20170198458

Control device and control method for construction machine

The present disclosure relates to a control device and a control method for a construction machine. The control device and the control method for the construction machine according to the exemplary embodiment of the present disclosure may adjust an engine revolutions per minute (rpm) according to a load applied to the construction machine, thereby controlling an output of equipment. ... Doosan Corporation

06/22/17 / #20170177758

Method for predicting slagging production position and slagging production possibility in furnace

The present disclosure relates to a method for predicting a slagging production position and a slagging production possibility in a furnace, the method including: the analyzing step of analyzing physical compositions of two or more kinds of coal; the phase diagram producing step of producing a phase diagram on the basis of the physical components of the two or more kinds of coal analyzed in the analyzing step; the deriving step of simulating the situation generated when the two or more kinds of coal are co-fired on the basis of the produced phase diagram; and the characteristic analyzing step of analyzing the characteristics in the furnace in the co-firing process of the two or more kinds of coal.. . ... Doosan Corporation

06/22/17 / #20170175683

Exhaust gas recirculation apparatus and control method therefor

An exhaust gas recirculation apparatus including an engine; a suction line; an exhaust line; a post-processing unit which is disposed in the exhaust line to reduce hazardous substances contained in the exhaust gas; a first circulation line which guides a part of the exhaust gas, which is guided to the exhaust line, to the suction line; a second circulation line which guides a part of the exhaust gas, which is guided to a downstream side of the post-processing unit, to the suction line; and a bypass line which branches off from an upstream side of the second circulation line, and merges with a downstream side of the second circulation line, wherein ammonia slip, which is discharged from the post-processing unit, is prevented from being guided to the suction line.. . ... Doosan Corporation

06/15/17 / #20170170710

Flux shield having split structures and generator including the same

Disclosed herein are a flux shield and a generator including the same and, more particularly, a flux shield including split structures and a generator including the same.. . ... Doosan Corporation

06/15/17 / #20170170497

Fuel cell electrolyte management device

An illustrative example fuel cell electrolyte management device includes a first component having a first density and a second component having a second density that is less than the first density. The first component has a first side including a pocket and a second side facing opposite the first side. ... Doosan Corporation

06/15/17 / #20170170490

Fuel cell component including flake graphite

A fuel cell separator plate includes flake graphite particles having a length along a planar direction and a thickness along a generally perpendicular direction. The flake graphite has an aspect ratio of length to thickness that is less than ten.. ... Doosan Corporation

06/15/17 / #20170170406

Organic compound and organic electroluminescent element comprising same

The present disclosure relates to a novel organic compound and an organic electroluminescent device comprising the same, and the organic compound of the present disclosure may be used for an organic material layer of the organic electroluminescent device, thereby improving the light emitting efficiency, driving voltage, lifetime, and the like of the organic electroluminescent device.. . ... Doosan Corporation

06/15/17 / #20170167613

Sealing structure for turbine

A sealing structure for a turbine includes a recessed portion formed around a rotary body and having an annular shape, an annular packing body fixed in a coupling groove of a stationary body, a support member disposed at a central portion of the packing body, a brush seal, one end of which is fixed to the support member while the other end of the brush seal is disposed in the recessed portion, and a tooth portion disposed in at least one side of the packing body.. . ... Doosan Corporation

06/15/17 / #20170167294

Rotor structure for removing bearing oil

The present disclosure relates to a structure for a rotor for removing bearing oil, including a rotor shaft disposed in a casing of a turbine and an annular oil scattering structure formed between an oil deflector and a bearing supporter on the rotor shaft in a circumferential direction to scatter bearing oil flowing from the bearing supporter toward the oil deflector along a surface of the rotor shaft.. . ... Doosan Corporation

06/08/17 / #20170161671

System and method for repairing wind generator based on weather information

The present disclosure relates to a method and a system for repairing a wind generator based on weather information. According to an exemplary embodiment of the present disclosure, it is possible to effectively calculate a repairing time of the wind generator based on weather information.. ... Doosan Corporation

06/08/17 / #20170159643

Yaw brake system

Disclosed herein is a yaw brake system including a multi-disk member disposed in an upper portion of a tower frame of wind generator and including at least two disks, and a braking member disposed in a lower end of a nacelle frame of the wind generator, and provided to brake yawing of a nacelle by interlocking with the multi-disk member. In accordance with the disclosure, it is possible to prepare for buildup of equipment, such as a blade, a hub, or a nacelle, depending on an increase in power of wind power generation, and at the same time to more effectively brake yawing of the nacelle due to a rapid change in wind direction while overcoming a limited space in the nacelle.. ... Doosan Corporation

06/01/17 / #20170152747

Disk assembly and turbine including the same

A disk assembly includes a first disk, a second disk and a third disk. The first disk is engaged with a compressor section of a gas turbine. ... Doosan Corporation

05/18/17 / #20170138679

Condenser tube cleaning apparatus

Disclosed herein is a condenser tube cleaning apparatus. The condenser tube cleaning apparatus can stably circulate and collect a large number of cleaning balls to efficiently remove foreign substances accumulated in a condenser unit.. ... Doosan Corporation

05/18/17 / #20170138347

Apparatus and method for controlling wind power generator unit

An apparatus for controlling a wind power generator unit includes a deviation detection unit to detect an angular deviation between windward and a current rotation direction of a nacelle after a wind power generator is installed so as to face the windward, and a control unit to receive data detected by the deviation detection unit and to control a brake state and a yawing state of a yaw brake unit, wherein when the nacelle rotates out of a preset deviation range, the control unit temporarily releases frictional force of a brake pad coming into close contact with a disk so as to control a brake operation state of the yaw brake unit.. . ... Doosan Corporation

05/18/17 / #20170136871

Wheel driving system for construction machinery

A wheel driving system includes a generator connected to an engine and configured to generate electrical energy, a front axle configured to drive a front wheel and including a front electric motor configured to produce a driving torque and a front transmission configured to convert the driving torque into a conversion torque and transmit the conversion torque to the front wheel via a front drive shaft, a rear axle configured to drive a rear wheel and including a rear electric motor configured to produce a driving torque and a rear transmission configured to convert the driving torque into a conversion torque and transmit the conversion torque to the rear wheel via a rear drive shaft, and a central connection unit operatively connected to the front drive shaft and the rear drive shaft and configured to transmit the conversion torque between the front axle and the rear axle.. . ... Doosan Corporation

05/18/17 / #20170136425

Static mixer

A static mixer for mixing exhaust gases to be supplied to a selective catalytic reduction device located at the back of a boiler, includes a gas accommodation part having a first inlet and a plurality of second inlets partitioned from each other to introduce gases having different temperatures thereinto so that the gases introduced through the first inlet and the plurality of second inlets flow to a plurality of divided sections. A discharge part is provided that communicates with the gas accommodation part to collect and discharge the gases and a mixing plate part is provided, which has a plurality of unit plates disposed on the upper and lower portions of a hollow portion of the discharge part in such a manner as to have a given angle with respect to the directions of the gases discharged.. ... Doosan Corporation

05/11/17 / #20170133698

Method of decontaminating a fuel reactant stream for a fuel cell

An example method of decontaminating a fuel reactant stream for a fuel cell flows the fuel reactant stream through a fluidized ammonia dissolving media, while simultaneously flowing water through the fluidized ammonia dissolving media to separate contaminants from the fuel reactant stream into a separated contaminant and water stream. The separated contaminant and water stream from the fluidized bed is accumulated within an accumulator, circulated through a water-control loop, and decontaminated by flowing the stream through an ion exchange bed secured in fluid communication with the water-control loop. ... Doosan Corporation

05/11/17 / #20170131172

Apparatus and method for diagnosing abnormal operation of a rotor

An apparatus for diagnosing abnormal operation of a rotor. The apparatus includes a first sensor provided around a shaft in order to detect vibration occurring while the shaft provided in a rotor axially rotates, a second sensor to generate a periodic pulse signal over time whenever the shaft rotates once, and a controller to determine an operation state of the rotor by receiving signals detected by the first and second sensors. ... Doosan Corporation

05/11/17 / #20170131134

Load weighing method and system for wheel loader

In a load weighing method for a wheel loader, an inclined angle of a ground surface on a slope where the wheel loader is working is detected. A change in a boom angle and a change in a pressure of a boom cylinder are detected while pivoting the boom and an attachment connected to the boom when a load is placed on the attachment. ... Doosan Corporation

05/11/17 / #20170130872

Pipe support structure

A pipe support structure is described comprising a support member defining a support surface, and a plurality of pipe support elements; wherein the support surface defines a plurality of grooves each correspondingly sized and shaped to receive a respective one of the pipe support elements, with the pipe support element being sized to project beyond its groove when so received. The pipe support elements may then be fabricated from a material selected for instance for low friction, corrosion resistance or the like. ... Doosan Corporation

05/04/17 / #20170121943

Method and device for controlling main control valve of construction machinery

In a method of controlling a main control valve in construction machinery, a first joystick signal for controlling a first control valve device and/or a second joystick signal for controlling a second control valve device are received from one joystick. While one of the first and second control valve devices operates, whether or not a joystick signal for controlling another of the first and second control valve devices is inputted is determined. ... Doosan Corporation

05/04/17 / #20170121185

Dissolved air flotation system

The present disclosure relates to a dissolved air flotation system using ambient air, and more particularly, to a dissolved air flotation system that is capable of allowing ambient air to be introduced in front of a pump to generate micro air bubbles with the water discharged from the pump, so that the ambient air may be used instead of compressed air.. . ... Doosan Corporation

04/27/17 / #20170114673

Supercritical co2 generation system applying recuperator per each heat source

Disclosed herein is a supercritical co2 generation system using plural heat sources, including: a pump configured to circulate a working fluid; plural heat exchangers configured to heat the working fluid using an external heat source; plural turbines configured to be driven by the working fluid heated by passing through the heat exchanger; and plural recuperators configured to exchange heat between the working fluid passing through the turbine and the working fluid passing through the pump to cool the working fluid passing through the turbine and heat the working fluid passing through the pump, in which the heat exchanger may include plural constrained heat exchangers having an emission regulation condition of an outlet end and plural heat exchangers without the emission regulation condition.. . ... Doosan Corporation

04/27/17 / #20170114655

Sealing assembly

A sealing assembly includes a first sealing member disposed on a fixed body and a second sealing member disposed on a rotating body while facing the first sealing member, such that when the second sealing member rotates, the first sealing member and the second sealing member work in conjunction with each other to generate flow of fluid in a reverse direction and form a fluid barrier, thereby preventing leakage of the fluid.. . ... Doosan Corporation

04/27/17 / #20170113167

Water purifying system and backwash module control method thereof

Disclosed herein is a water purifying system, including: a raw water tank configured to store raw water; a filter unit configured to include a plurality of filtration modules for purifying the raw water and a plurality of valves for feeding or cutting off the raw water; a raw water pump configured to feed the raw water from the raw water tank to the filter unit; and a backwash module configured to feed backwash water to the filter unit, in which some of permeate water permeated by the filter unit is fed to the backwash module to be used as the backwash water and a feed pressure of the backwash water is fed by the raw water pump.. . ... Doosan Corporation

04/20/17 / #20170107860

Supercritical co2 generation system applying plural heat sources

A supercritical co2 generation system using plural heat sources, includes: a pump configured to circulate a working fluid; heat exchangers configured to heat the working fluid using an external heat source; turbines configured to be driven by the working fluid heated by passing through the heat exchanger; and recuperators configured to exchange heat between the working fluid passing through the turbine and the working fluid passing through the pump to cool the working fluid passing through the turbine, in which the heat exchanger includes constrained heat exchangers having an emission regulation condition of an outlet end and heat exchangers without the emission regulation condition.. . ... Doosan Corporation

04/20/17 / #20170107822

Gas turbine cooling apparatus

Disclosed herein is a cooling apparatus of a gas turbine including a compressor disk unit mounted in a gas turbine and provided with compressor cooling passages; the torque tube units provided in an adhering state to each other while being adjacent to the compressor disk unit and provided with a cooling air supply passage communicating with the compressor disk cooling passage; and a turbine disk unit provided with a turbine disk cooling passage communicating with the cooling air supply passage of the torque tube unit, in which the torque tube units are disposed between the compressor disk unit and the turbine disk unit and coupled therewith in an adhering state to each other along an axial direction of a rotation shaft mounted in the gas turbine and the cooling air supply passage is open in horizontal direction along the axial direction from an edge of the torque tube unit.. . ... Doosan Corporation

04/20/17 / #20170107691

Method for controlling swing motor in hydraulic system and hydraulic system

The present disclosure relates to a method for controlling a swing motor in a hydraulic system and a hydraulic system. The method for controlling the swing motor in the hydraulic system and the hydraulic system according to the exemplary embodiment of the present disclosure may ensure the sufficient amount of hydraulic oil in a make-up line in a situation in which the hydraulic oil needs to be supplementarily supplied to the swing motor in the hydraulic system. ... Doosan Corporation

04/13/17 / #20170100789

Tube cutting device having conical fitting member to cut tube of waste steam generator

A tube cutting device for cutting a tube of a waste steam generator including: a body configured to transmit power; a tube-shaped rotary body provided on a side surface of the body and having a horizontal rotary shaft configured to rotate with the power supplied from the body; a plurality of clamps provided along an outer peripheral surface of a first end portion of the rotary body and configured to fix the rotary body to the tube to be cut; a saw provided on a second end portion opposite to the first side end portion of the rotary body and configured to rotate together with the rotary body to cut the tube; and a fitting member configured to be inserted into a hollow portion formed on a center portion of the saw.. . ... Doosan Corporation

04/06/17 / #20170096948

Engine

An engine having improved volumetric efficiency may include a cylinder, an intake valve, a piston, an exhaust valve and a crankshaft. The cylinder may include a cylinder bore. ... Doosan Corporation

04/06/17 / #20170096912

Foreign substance removal apparatus for gas turbine

A foreign substance removal apparatus for a gas turbine includes a combustor casing having a first cooling air passage formed in a tangential direction of a combustor in a gas turbine in order to move cooling air into the combustor, a first foreign substance collection unit disposed on a flow path in the first cooling air passage in order to primarily filter foreign substances contained in the cooling air, a second cooling air passage extending radially toward a turbine blade in a circumferential direction of a torque tube located in the combustor, and a second foreign substance collection unit disposed on a flow path in the second cooling air passage and communicating with the second cooling air passage to secondarily filter foreign substances contained in the cooling air introduced through the first cooling air passage.. . ... Doosan Corporation

04/06/17 / #20170096907

Gas turbine tip clearance control assembly

The present disclosure relates to a tip clearance control assembly of a gas turbine including a casing, a plurality of blades, a labyrinth seal, and a shroud. The casing guides a flow of combustion gas. ... Doosan Corporation

04/06/17 / #20170096899

Gas turbine disk

The present disclosure relates to a plurality of disks, on which outer circumferential surfaces a plurality of blades are arranged, and has an objective to provide a gas turbine disk including a plurality of cooling channels penetrating the side surfaces of the disks and spaced from each other in a radial direction, and reinforcement parts coupled to partial arcs of exits of the cooling channels so as to reduce stress concentrated on the cooling channels.. . ... Doosan Corporation

04/06/17 / #20170096898

Gas turbine disk

A gas turbine disk includes a rotor and a tie-bolt. The rotor includes a plurality of blades and a plurality of disks. ... Doosan Corporation

04/06/17 / #20170095753

Cyclone type liquid-vapor separator and forced circulation type evaporator using the same

A cyclone type liquid-vapor separator includes a chamber including: an internal space wherein the treatment liquid introduced into the internal space is depressurized and evaporated; a vapor outlet formed on a top of the chamber and through which vapors generated through the evaporation is discharged; and a concentrated liquid outlet formed on a bottom of the chamber and through which the concentrated treatment liquid is discharged; an inlet part coupled to a side surface of the chamber in a tangent line direction of an inner peripheral surface of the chamber, the treatment liquid introduced into the chamber is turned in the form of vortexes along the inner peripheral surface of the chamber; and at least one partition wall disposed in an area between the inlet part and the vapor outlet of the internal space of the chamber and protruding from the inner peripheral wall of the chamber to prevent mist contained in the vapors from moving upwardly.. . ... Doosan Corporation

03/30/17 / #20170088452

Apparatus for evaporative concentration of water to be treated, which uses hot lime softening, and method for evaporative concentration of water using the same

An apparatus for evaporative concentration of water, containing hardness-causing substances, to be treated using hot lime softening, includes: a first evaporator configured to form first concentrated water from the water to be treated by evaporatively concentrating the water by first heat exchange with hot steam; a hot lime softener configured to precipitate and to separate hardness-causing substances contained in the first concentrated water from at least a portion of the first concentrated water from the first evaporator by reaction with lime and configured to remove the hardness-causing substances from the first concentrated water; and a second evaporator configured to form second concentrated water by further evaporatively concentrating at least a portion of the first concentrated water that passed through the hot lime softener by second heat exchange with hot steam.. . ... Doosan Corporation

03/23/17 / #20170081962

System for cooling gas turbine

Disclosed herein is a system for cooling a gas turbine. The system for cooling a gas turbine cools a turbine disk unit by individually supplying cooling air to each of a plurality of turbine disks.. ... Doosan Corporation

03/16/17 / #20170073798

Heat resistant spheroidal graphite cast iron, method of manufacturing the same and engine exhaust system part including the same

Heat resistant spheroidal graphite cast iron having an improved high temperature tensile strength includes carbon (c) in a range of 3.2-3.4 wt %, silicon (si) in a range of 4.3-4.8 wt %, manganese (mn) in a range of 0.2-0.3 wt %, molybdenum (mo) in a range of 0.8-1.0 wt %, vanadium (v) in a range of 0.4-0.6 wt %, chrome (cr) in a range of 0.2-0.4 wt %, niobium (nb) in a range of 0.2-0.4 wt %, inevitable impurities, and a remainder of iron (fe) based on a total weight of the heat resistant spheroidal graphite cast iron. The heat resistant spheroidal graphite cast iron further includes barium (ba) in a range of 0.0045-0.0075 wt %. ... Doosan Corporation

03/02/17 / #20170063199

Rotor assembly having improved cooling path

A rotor assembly includes: coil turns each of which has a plurality of conductors stacked in a multilayer structure and includes a linear part interposed between teeth of a rotor body and formed in a longitudinal direction with ducts through which cooling fluid moves, and a curved part extending from the linear part and disposed in an arc shape on an outer circumferential surface of a spindle; and a turn insulator interposed between the conductors, and insulating the conductors from each other. The curved part may include a wave-shaped cooling path, which is formed in a longitudinal direction in a planar surface thereof, communicates with the ducts, and guides the cooling fluid to the ducts. ... Doosan Corporation

03/02/17 / #20170063181

Device for preventing vibration of stator core for power generator

A device for preventing a vibration of a stator core for power generator includes: a ring-shaped fastening band installed to enclose an outer circumferential surface of a stator core to support the stator core; a plurality of key bars coupled with the fastening band to be coupled with the stator core; and a plurality of elastic portions coupled with the fastening band to insulate vibrations in a diameter direction and an outer circumferential direction of the stator core, in which a diameter of the fastening band is extendible.. . ... Doosan Corporation

03/02/17 / #20170059251

Deaerator

A deaerator includes a tank, a spray unit, a steam supply unit, a bleed unit and a discharge pipe. The spray unit is disposed at an upper portion of the tank and configured to supply water to the tank. ... Doosan Corporation

03/02/17 / #20170059041

Dust preventing seal and construction machine having the same

A dust preventing seal may include a body and first and second dust lips. The body may be installed at a locking portion between an arm and a bucket of a construction machine. ... Doosan Corporation

03/02/17 / #20170058702

Steam turbine

A steam turbine includes a boiler unit, first supply pipes, a second supply pipe, a plurality of valve units, a drain valve unit, and a controller. The controller is configured to control, before rotation of the turbine starts, an operation time and temperature of the auxiliary boiler so that the temperatures of the high-pressure turbine and the intermediate-pressure turbine are increased to the first setting temperature. ... Doosan Corporation

03/02/17 / #20170057853

Submerged membrane filtration system using reciprocating membrane

Provided is a reciprocating submerged membrane filtration apparatus including: a membrane tank comprising a submerged membrane and configured to intake influent wastewater to be treated, the influent wastewater being filtered through the submerged membrane to produce treated water; and a reciprocation apparatus configured to move the membrane to create an inertia force which shakes foulants off from the submerged membrane under oxygen-deficient conditions, wherein the submerged membrane comprises a microfiltration (mf) membrane or an ultrafiltration (uf) membrane.. . ... Doosan Corporation

02/16/17 / #20170047806

Rotor assembly

Disclosed herein is a rotor assembly, including a cylindrical housing coupled to an outer circumferential surface of a rotor body and configured to house a coil turn therein, a supporting unit disposed in the housing and configured to prevent the coil turn from being pushed in an axial direction of a rotor, and a vane ring coupled to one end of the housing and provided with blades guiding cooling fluid to the coil turn. The rotor assembly may include: coil turns each of which is formed by stacking conductors in a multilayer structure and includes a linear part interposed between teeth, and a curved part extending from the linear part and disposed on an outer surface of a spindle; first supporting blocks which are inserted into the curved part and disposed between the conductors; and a second supporting block which is disposed between the first supporting blocks.. ... Doosan Corporation

02/16/17 / #20170044905

Gas turbine blade

A gas turbine blade has a trench part of a film cooling unit for cooling a blade part that is formed at a tip of a film cooling hole part. As a result, cooling efficiency of the blade can be improved since the blade part is sufficiently cooled even during introduction of a large amount of cooling air, durability of the blade can be increased by inhibiting the blade from being damaged due to hot gas since the trench part is formed to have a minimum width, and efficiency of a gas turbine can be increased by an improvement in film efficiency.. ... Doosan Corporation

02/16/17 / #20170043988

Control device and control method forklift

The present disclosure relates to an apparatus and a method for controlling a forklift. The apparatus and the method for controlling the forklift according to the present disclosure adjust a fork/mast inclination by referring to whether the cargo is overloaded and the forklift speeds, and particularly, when a movement direction of a cargo when the cargo slides on a fork is an outward direction, thereby preventing the cargo from falling. ... Doosan Corporation

02/16/17 / #20170043281

High-rate sedimentation tank and water treatment apparatus including the same

A high-rate sedimentation tank includes a hopper configured to be supplied with raw water including floc, at least one circular orifice pipe disposed at a lower portion of the hopper and configured to have the floc deposited therein as a sludge while passing the floc included in the raw water therethrough, and a sludge outlet configured to discharge the sludge deposited by passing through the circular orifice pipe to an outside of the hopper.. . ... Doosan Corporation

02/09/17 / #20170037735

Assembling method of a bucket and a fixture for a bucket for a turbine blade

Disclosed herein is a fixture for a bucket for a turbine blade. The fixture includes a rotor wheel that includes a plurality of dovetail grooves. ... Doosan Corporation

01/19/17 / #20170016616

Fluidized bed heat exchanger

A fluidized bed heat exchanger with a chamber (24) comprises a solid particles inlet port (22), a solid particles outlet port (30), arranged at a distance to the inlet port (22), means (46) for introducing a fluidizing gas from a bottom area into the chamber (24). The heat exchanger further comprises at least two heat transfer means (28) within the one chamber (24), each being provided with a heat transfer medium inlet port (42) and a heat transfer medium outlet port (44), wherein a first heat transfer means (28) is designed as a reheater and second heat transfer means (28) is designed as a superheater to achieve a heat transfer medium temperature and a heat transfer medium pressure above that of the reheater. ... Doosan Corporation

01/19/17 / #20170016397

Gas turbine compressing cooling system provided with cooling air supply paths around outer casing

The present invention relates to a gas turbine which includes a cooling system provided with cooling air supply paths bypassed through an outside casing and, more specifically, to a gas turbine including a cooling system and a cooling method, wherein, in order to supply cooling air to a plurality of turbine blades and other devices provided to the inside of the gas turbine, cooling air supply paths are not provided to the rotor center shaft of the gas turbine but provided around the outer casing of the gas turbine so as to achieve the increased effect in the aerodynamic efficiency of the compressor and the turbine. According to the above structure and method, it may be possible to provide the cooling air supply paths not to the rotor center shaft of the gas turbine but around the outer casing of the gas turbine, thereby finally achieving the increased effect in the aerodynamic efficiency of the compressor and the turbine.. ... Doosan Corporation

01/19/17 / #20170016372

Cooling device for reducing agent injection module and selective catalytic reduction system having the same

A cooling device for a reducing agent injection module includes a coolant circulation line connected to a module cooling channel for cooling the reducing agent injection module and configured that a coolant circulates therethrough, a closed circuit circulation line respectively connected to a first portion of the coolant circulation line in front of the module cooling channel and to a second portion of the coolant circulation line in rear of the module cooling channel and configured that a portion of the coolant circulation line is selectively used to form a closed circuit, and at least one heat dissipating part provided in the closed circuit to dissipate heat which is transported from the module cooling channel by natural convection of the coolant within the closed circuit.. . ... Doosan Corporation

01/19/17 / #20170016098

Spheroidal graphite cast iron for an engine exhaust system

A spheroidal graphite cast iron for a component of an engine exhaust system includes carbon ranging from about 3.0 wt % to about 3.4 wt %, silicon ranging from about 4.2 wt % to about 4.5 wt %, manganese ranging from about 0.1 wt % to about 0.3 wt %, sulfur ranging from about 0.002 wt % to about 0.01 wt %, phosphorous in a range equal to or less than about 0.05 wt %, magnesium ranging from about 0.035 wt % to about 0.055 wt %, molybdenum ranging from about 0.9 wt % to about 1.2 wt %, nickel ranging from about 0.2 wt % to about 0.5 wt %, vanadium ranging from about 0.4 wt % to about 0.6 wt %, niobium ranging from about 0.1 wt % to about 0.4 wt %, cerium ranging from about 0.005 wt % to about 0.01 wt %, aluminum ranging from about 0.003 wt % to about 0.007 wt %, and a remainder of iron.. . ... Doosan Corporation

01/12/17 / #20170012298

Molding process for making fuel cell components

An illustrative method of making a fuel cell component includes obtaining at least one blank plate including graphite and a polymer; establishing a temperature of the blank that is sufficient to maintain the polymer in an at least partially molten state; and applying a compression molding force to the blank until the polymer is essentially solidified to form a plate including a plurality of channels on at least one side of the plate. The blank plate has a central area having a first thickness. ... Doosan Corporation

01/12/17 / #20170010604

Operating panel device for machining tools

Disclosed is an operating panel device for a machining center having a length in a first direction and a width in a second direction. The operating panel device includes an operating interface having a panel that communicates with the machining center and a panel support that supports and secures the panel, a linear transfer arranged at a longitudinal side of the machining center and extending in the first direction, and a rotating coupler coupling the operating interface to the linear transfer and conducting a linear motion along the first direction and a rotating motion with respect to a third direction perpendicular to the first and the second directions such that the operating interface is selectively positioned at one of the longitudinal side and a latitudinal side of the machining center.. ... Doosan Corporation

01/05/17 / #an abnormality diagnostic system for a work system of construction machinery includes an input portion configured to receive state information of an engine, a hydraulic pump and a work apparatus of the construction machinery, a controller configured to calculate and mutually compare horsepower information of the engine, the hydraulic pump and the work apparatus from the received state information, and if the horsepower information are different from each other by a preset range or more, determine whether or not abnormality occurs in any one of the engine, the hydraulic pump and the work apparatus corresponding thereto, and an output portion configured to output the determination result of abnormality.

Doosan Infracore Co., Ltd.

. . ... Doosan Corporation








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