Patents Assigned to ALSTOM Technology
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Publication number: 20160298844Abstract: The invention refers to burner arrangement for producing hot gases to be expanded in a gas turbine, including a burner inside a plenum, where the burner has means for fuel injection, means for air supply and means for generating an ignitable fuel/air mixture inside the burner, and a combustion chamber following downstream said burner having an outlet being fluidly connected to the gas turbine. The invention is characterized in that the means for air supply includes at least two separate flow passages, and that the one of the two flow passages is fed by a first supply pressure and the other flow passage is fed by a second supply pressure.Type: ApplicationFiled: July 8, 2013Publication date: October 13, 2016Applicant: ALSTOM Technology LtdInventors: Stefano BERNERO, Ennio PASQUALOTTO, Ewald FREITAG
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Patent number: 9455575Abstract: A voltage source converter for high voltage DC power transmission is disclosed. According to one aspect, the voltage source converter is connectable between a DC network and another electrical network to interconnect the DC network and the other electrical network. The voltage source converter includes a converter unit configured to convert power flowing between the DC network and the other electrical network and at least one fault unit. One or more of the fault units includes at least one fault module having a voltage source that is operable, in the event of a short circuit in a DC network connected to the voltage source converter, to produce a voltage that acts to reduce current flowing through the voltage source converter and the short circuit.Type: GrantFiled: July 31, 2009Date of Patent: September 27, 2016Assignee: Alstom Technology, Ltd.Inventors: David Trainer, Colin Donald Murray Oates, Colin Charnock Davidson, Robert Whitehouse
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Publication number: 20160265764Abstract: 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. The CLOU material further oxidizes impurities present in the post-combustion gas to reduce or remove the same.Type: ApplicationFiled: March 4, 2016Publication date: September 15, 2016Applicant: ALSTOM Technology LtdInventors: IQBAL ABDULALLY, SHIN GYOO KANG
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Patent number: 9443666Abstract: An electrical contact device of the contact finger type for high nominal current between a first part that is conductive and a conductive surface of a second part comprising a flexible rod connected to a first connection element for mechanical and electrical connection to the first part, a contact portion applied on the conductive surface of the second part, and at least one metal contact blade placed at a first end between a first end of the flexible rod and the first part. The flexible rod is conductive, and the at least one metal blade is connected at its second end to the second end of the flexible rod by a second mechanical and electrical connection element.Type: GrantFiled: September 30, 2013Date of Patent: September 13, 2016Assignee: Alstom Technology Ltd.Inventors: Didier Rodrigues, Denis Frigiere, Jean Marc Willieme, Frank Jacquier
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Patent number: 9440183Abstract: A wet scrubber (1) for cleaning a process gas containing sulphur dioxide comprises an absorption vessel (2) for contacting the process gas with an absorption liquid to absorb sulphur dioxide from the process gas, a sulphite sensor (68, 74) for measuring a sulphite concentration in the absorption liquid, and a control unit (52). The control unit (52) is adapted to receive a measurement signal from the sulphite sensor (68, 74) and to control, based on the measured sulphite concentration, at least one wet scrubber operating parameter influencing the sulphite concentration in the absorption liquid.Type: GrantFiled: October 8, 2012Date of Patent: September 13, 2016Assignee: ALSTOM Technology LtdInventors: Fredrik Jens Brogaard, Kerstin Forsgren, Mikael Larsson, Rikard HÃ¥kansson
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Patent number: 9438094Abstract: The arrangement of an electric machine, a connecting system and a converter, includes the connecting system connected between the electric machine and the converter. The connecting system has an enclosure that houses non-shielded conductors each non-shielded conductor is connected between a phase of the electric machine and the inner side of the converter. The non-shielded conductors of the connecting system that are connected to an operating phase of the electric machine are adjacent to conductors of the connecting system that are not connected to operating phases of the electric machine.Type: GrantFiled: April 16, 2013Date of Patent: September 6, 2016Assignee: ALSTOM Technology LtdInventors: Not-Curdin Fried, Damir Novosel, Daniel Hediger, Andre Arndt, Hossein Safari Zadeh, Gregoire Vienne
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Patent number: 9431167Abstract: A single-phase electric furnace transformer is provided according to the basic principle of the invention, comprising: a single magnetic core, said magnetic core comprising two side columns and at least one main column; a main transformer, comprising a first primary side winding and a first secondary side winding which are disposed on said at least one main column, wherein said first primary side winding consists of a first winding and a second winding which are connected in series with each other; and a voltage regulating autotransformer, which is disposed on one of two side columns of said magnetic core, and which comprises a second primary side winding and a second secondary side winding, wherein said second secondary side winding is an adjustable winding having on-load tap switch, and said adjustable winding is connected in series between the first winding and the second winding of said main transformer.Type: GrantFiled: September 29, 2012Date of Patent: August 30, 2016Assignee: Alstom Technology LimitedInventors: Junjun Guan, Serge Tirilly
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Patent number: 9427695Abstract: A chilled ammonia capture system for capturing carbon dioxide from a flue gas stream comprises a first absorber and a second absorber. The first absorber operates at a temperature of about 25 to about 50 degrees Celsius. The operating temperature permits the use of a lower circulation rate, which leads to smaller diameter vessels and to fewer recirculation pumps, which in turn leads to lower operating and maintenance costs.Type: GrantFiled: April 3, 2012Date of Patent: August 30, 2016Assignee: ALSTOM Technology LtdInventors: Sandra Guidolin, Joseph P. Naumovitz, Peter Kniesburges
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Patent number: 9429274Abstract: A system for regulating an amount of fresh lime slurry introduced to a spray dry absorber. The control system includes a controller configured to receive input from a continuous emissions monitoring system (CEMS), a valve in communication with the controller and a spray dry absorber suction pump, the valve adapted to regulate an amount of fresh lime slurry provided to the spray dry absorber suction pump and a valve in communication with the controller and a pre-mix tank, the valve adapted to regulate an amount of fresh lime slurry provided to the pre-mix tank.Type: GrantFiled: September 15, 2011Date of Patent: August 30, 2016Assignee: ALSTOM Technology LtdInventors: Travis Dwight Reynolds, Dwight Arnold Goodman, Thomas Edwin Pearson, Dana Humphreys
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Patent number: 9429359Abstract: A method for drying a wet CO2 rich gas stream from an oxy-combustion process that includes: compressing the wet CO2 rich gas stream to a drying process operating pressure, cooling the wet CO2 rich gas stream in at least one cooler, alternately drying the wet CO2 rich gas stream in at least one dryer which contains at least one desiccant bed and regenerating the desiccant bed by conducting a heated regenerating gas through the dryer in opposite direction to the flow direction of the wet CO2 rich gas stream, separating the dried CO2 rich gas stream in a purification process to a purified CO2 gas stream and a waste gas stream rich in nitrogen and oxygen, whereby the waste gas stream rich in nitrogen and oxygen is used as regenerating gas, and subsequently to the regeneration the dryer is purged at least once by a pressurized CO2 rich gas stream conducted from the compressor, and whereby the dryer is charged up to the drying process operating pressure with a pressurized CO2 rich gas stream conducted from the compType: GrantFiled: July 12, 2013Date of Patent: August 30, 2016Assignee: ALSTOM Technology LtdInventors: Olaf Stallmann, Markus Joerg Weitzel
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Patent number: 9429028Abstract: A pinned root fixing arrangement of axial flow steam turbine rotor discs made of a low alloy that is less susceptible to stress corrosion cracking (SCC). Such an arrangement has a first ratio, which is defined as ratio of the axial breadth of the disc fingers and the sum of the axial breath and the axial breadth G of the gap between adjacent disc fingers, in the range of about 0.4 to about 0.6 and further has a second ratio, which is defined as the ratio of the length of the disc fingers and the blade fingers to the diameter, between 4 and 6.Type: GrantFiled: July 25, 2013Date of Patent: August 30, 2016Assignee: ALSTOM Technology LtdInventors: Arnaud Buguin, Michel Floch, Julien Lemaire
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Patent number: 9428449Abstract: A method of forming urea by integration of an ammonia production process with that of a urea production process, as well as a system for the method is disclosed. Also, an alternative method of forming urea by integration of a part of an ammonia production process with that of a urea production process, as well as a system for the alternative method.Type: GrantFiled: June 23, 2014Date of Patent: August 30, 2016Assignee: ALSTOM Technology LtdInventors: Frank Ennenbach, Ulrich Koss
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Patent number: 9422822Abstract: The invention relates to a turbine of a power plant, having a stator, which has a housing and in the housing at least one stator blade carrier comprising stator blades. A rotor is provided which has a rotor shaft having rotor blades. At least one sealing device is provided which axially seals the respective stator blade carrier with respect to the housing and separates two regions having different pressures from one another. Improved sealing action is achieved in that the sealing device includes an axially acting primary sealing ring extending in the circumferential direction, and an axially acting additional sealing ring extending in the circumferential direction. The primary sealing ring facing the region has the lower pressure. The additional sealing ring facing the region has the higher pressure. The primary sealing ring is attached axially rigidly on the stator blade carrier.Type: GrantFiled: August 27, 2013Date of Patent: August 23, 2016Assignee: ALSTOM Technology LtdInventors: Andras Wrobel, Egon Geist
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Patent number: 9418806Abstract: A power switching apparatus comprising a vacuum interrupter assembly and a switching assembly connected in parallel between a pair of terminals, each of the terminals being connectable in use to an electrical circuit. The vacuum interrupter assembly includes at least one vacuum interrupter having a pair of electrically conductive rods connected at a first end to a respective one of the terminals and extending at a second end into a vacuum tight enclosure. A first electrode is mounted at or near the second end of a first of the electrically conductive rods and a slotted coil including a support base mounted at or near the second end of a second of the electrically conductive rods. A second electrode is mounted on an inner surface of the slotted coil and a third electrode is mounted on the support base.Type: GrantFiled: June 7, 2011Date of Patent: August 16, 2016Assignee: Alstom Technology Ltd.Inventor: Rama Shankar Parashar
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Patent number: 9417010Abstract: An apparatus for condensing steam is described including at least two chambers with a first chamber operated as co-current flow condensing chamber and a second chamber operated as counter-current flow condensing chamber with the co-current flow condensing chamber including a cooling liquid distribution system with a plurality of channels arranged above a plurality of film carriers having flat surface areas to carry films of cooling liquid.Type: GrantFiled: September 17, 2014Date of Patent: August 16, 2016Assignee: ALSTOM Technology LtdInventors: Hartwig Wolf, Francisco Blangetti, Peter Rusche
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Patent number: 9403123Abstract: A spray dryer disperser 24, 26, 28, 30 is described for use in a spray dryer absorption (SDA) system 18 for flue gas FG impurity reduction. As such, the spray dryer disperser 24, 26, 28, 30 disperses absorbent liquid or reagent slurry droplets into contact with a hot flue gas FG stream containing gaseous impurities to produce a flue gas FG stream of reduced impurity content and dry powder end products EP. The spray dryer disperser 24, 26, 28, 30 is useful in larger capacity SDA vessels 22 of approximately 12 to 22 meters in diameter or larger, to avoid disperser 24, 26, 28, 30 shroud 34a scale deposits, to avoid reagent slurry spray cloud suppression, to avoid vessel 22 wall 22b scale deposits and to achieve increased droplet rotational momentum for increased droplet flue gas FG penetration for efficient impurity reduction.Type: GrantFiled: June 24, 2014Date of Patent: August 2, 2016Assignee: ALSTOM Technology LtdInventor: Nabil Elias Rafidi
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Patent number: 9404777Abstract: A method of locating a partial discharge emission zone and to the associated device. The method is characterized in that it comprises a step of measuring partial discharge signals by means of four identical measurement channels each including a VHF and/or UHF detector, the four VHF and/or UHF detectors being positioned at the four vertices of a square or rectangle in such a manner that the partial discharge emission zone is determined inside the square or rectangle.Type: GrantFiled: June 15, 2011Date of Patent: August 2, 2016Assignee: Alstom Technology Ltd.Inventors: Sebastien Louise, Gilbert Luna
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Patent number: 9396895Abstract: The invention relates to a conductor for electrical equipment, including at least two electrically-conductive material support elements spaced apart from each other along a longitudinal axis (Y) and at least four electrically-conductive material structural sections elongate along the longitudinal axis (Y), curved transversely to the longitudinal axis, and supported by the support elements; wherein the support elements further hold apart in pairs the at least four curved structural sections, the separation maintained between two curved structural sections of a pair defining an open area extending transversely to the longitudinal axis and at least between the support elements, said open area reducing in size progressively and continuously. This conductor may advantageously form a movable contact (blade) of a high-voltage disconnector.Type: GrantFiled: October 15, 2012Date of Patent: July 19, 2016Assignee: ALSTOM Technology Ltd.Inventors: Daniel Demissy, Riyad Kechroud, Martin Leger
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Patent number: 9390872Abstract: A method of controlling a current breaking device in a high-voltage electricity network is disclosed. In one aspect, the method includes, for each phase (A, B, C), obtaining missing supply voltages from an acquired supply voltage, performing healthy phase/faulty phase discrimination, conducting voltage analysis by attempted matching of a model over a signal window, choosing a strategy of simple closing or reclosing of the breaking device as a function of choice conditions, calculating a set of optimum reclosing times for each phase in accordance with the chosen strategy, and selecting an optimum time from the proposed optimum times and closing the phases of the current breaking device.Type: GrantFiled: December 14, 2010Date of Patent: July 12, 2016Assignee: Alstom Technology LtdInventor: Alain Fanget
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Publication number: 20160197578Abstract: 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.Type: ApplicationFiled: August 11, 2014Publication date: July 7, 2016Applicant: Alstom Technology Ltd.Inventor: Jean-Pierre Dupraz