Patents Assigned to ALSTOM Technology
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Publication number: 20150349520Abstract: An electrical apparatus (10) comprises: first and second terminals (18,20) for connection to an electrical circuit; a chain-link converter (22) connected between the first and second terminals (18,20), the chain-link converter (22) including a plurality of chain-link modules (24), each chain-link module (24) inluding at least one switching element (26) and at least one energy storage device (28), the or each switching element (26) and the or each energy storage device (28) of each chain-link module (24) combining to selectively provide a voltage source; and a protection device (32) connected across an electrical block (34) that includes at least two of the plurality of chain-link modules (24), the protection device (32) including a plurality of series-connected semiconductor devices (36), wherein the protection device (32) selectively provides a current-conductive path to allow at least part of a current flowing in the electrical apparatus (10) to bypass the electrical block (34).Type: ApplicationFiled: November 13, 2013Publication date: December 3, 2015Applicant: ALSTOM Technology LtdInventors: Colin Charnock Davidson, Robert Whitehouse
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Patent number: 9200805Abstract: An apparatus and method to recover heat from and cool flue gases. As shown in FIG. 1, a condenser 10 is provided having two packed beds (20/26) and separate condensate loops. The condensate loops are configured such that first packed bed 20 maximizes heat recovery from flue gas 12 and second packed bed 26 maximizes cooling of flue gas 12. Temperature differences between entry flue gas 12 and recovered condensate 38 are minimized while temperatures differences between exit flue gas 34 and return condensate 54 is also minimized.Type: GrantFiled: March 30, 2012Date of Patent: December 1, 2015Assignee: ALSTOM Technology LtdInventors: Wuyin Wang, Stefan Ahman
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Patent number: 9200712Abstract: This valve is integrated into a fluid distribution network and enables selective interruption or authorization of the circulation of a fluid. The valve includes a fluid blocking member driven in rotation by an actuator device of the valve and at least one journal, a hollow body inside which the blocking member is mobile and which defines at least one bore for receiving the journal, and a bearing disposed around each journal and inside the bore of the body enabling support of the journal and guidance thereof in rotation relative to the bore, thereby centering the journal. The valve further includes a device for immobilizing and sealing for maintenance the journal relative to the body of the valve. This immobilization device is disposed on the same side of the bearing as the internal volume of the hollow body and is maneuverable via the bearing to go from a non-clamped first configuration to a clamped second configuration in which it immobilizes the journal in the bore and vice versa.Type: GrantFiled: January 8, 2014Date of Patent: December 1, 2015Assignee: ALSTOM Technology LtdInventor: Alain Mathieu
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Publication number: 20150340859Abstract: There is a method of fault clearance for a voltage source converter that interconnects a DC network and an AC network. The voltage source converter is connected to the DC network via one or more DC circuit interruption devices. The method comprises the steps of: (a) detecting a fault in the DC network; (b) carrying out a primary protection sequence, wherein the step of carrying out the primary protection sequence involves carrying out a first sub-sequence that includes the steps of: i. opening the or each DC circuit interruption device, ii. setting a DC power order of the voltage source converter to zero, iii. controlling the voltage source converter to exchange re-circuit breaker active power with the AC network.Type: ApplicationFiled: May 16, 2013Publication date: November 26, 2015Applicant: ALSTOM Technology LtdInventor: Carl David Barker
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Patent number: 9194377Abstract: An auxiliary steam supply system in a solar power plant includes a solar receiver having a superheater section, a turbine, a steam circuit, a thermal energy storage arrangement and an auxiliary steam circuit. The thermal energy storage arrangement, including a thermal energy storage medium, is configured for the steam circuit to receive a portion of the steam to heat the thermal energy storage medium. The thermal energy storage arrangement may receive the steam from any location across the superheater section. Moreover, the auxiliary steam circuit generating auxiliary steam flow, which thermally communicates with the thermal energy storage arrangement to be heated, is introduced to any location across the superheater section. Capacity of the thermal energy storage arrangement may be relatively small as compared to the solar receiver and may be compact for placement on top of a tower.Type: GrantFiled: November 8, 2013Date of Patent: November 24, 2015Assignee: ALSTOM Technology LtdInventors: Rahul J. Terdalkar, Romain Girard
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Publication number: 20150323179Abstract: A coal fired oxy boiler power plant is disclosed in which a steam coil oxygen preheater located on an oxygen line Air Separation Unit is thermally integrated with the condensate system. Thermal energy for the steam coil oxygen preheater is provided via an extraction line connected to a steam extraction port of an intermediate pressure steam turbine. A drain line of the steam coil oxygen preheater fluidly connects the steam coil oxygen preheater to a point of the Rankine steam cycle fluidly within the condensate system.Type: ApplicationFiled: May 8, 2015Publication date: November 12, 2015Applicant: ALSTOM Technology LtdInventors: Thierry POURCHOT, Francois GRANIER, Frederic GEIGER
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Publication number: 20150325386Abstract: The control device possesses a rigid main part combining most of the functional elements of this type of control device. It is made up of two portions of a rotary shaft, having placed between them a cam and a support arm that are connected together by a pivot that is offset relative to the axis of rotation. A toothed wheel having an inner set of teeth is placed around the support arm that is provided with a rachet system. The toothed wheel has an outer set of teeth-driven by a motor, via an intermediate gearwheel. The pivot controls the compression of the actuator spring by the assembly rotating. The device is applicable to high and medium voltage circuit breakers and switches.Type: ApplicationFiled: November 27, 2013Publication date: November 12, 2015Applicant: ALSTOM Technology LtdInventors: Simon ARDYNA, Ernst SUTER, Peter VON ALLMEN
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Publication number: 20150323180Abstract: A coal fired Oxy boiler power plant having a combustion system configured to burn coal using an oxygen stream to produce a flue gas stream, a CO2 capture system connected to the flue gas stream and a steam cycle with serially arranged low pressure heaters forming part of a condensate system. The combustion system includes, an Air Separation Unit for removing N2 from air to produce the oxygen stream for the boiler. The Air Separation Unit includes an Air Separation Unit heat exchanger that is thermally and fluidly connected to the condensate system so as to be fluidly parallel to at least one serial low pressure heater and fluidly parallel to at least one less that the total number of serial low pressure heaters. The Flue Gas Heat Recovery System, Flue Gas Condenser and Gas Processing unit are thermally integrated into the condensate system.Type: ApplicationFiled: May 8, 2015Publication date: November 12, 2015Applicant: ALSTOM Technology LtdInventors: Thierry POURCHOT, Francois GRANIER, Frederic GEIGER
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Publication number: 20150318124Abstract: A switchgear comprising a set of arcing contacts, a set of disconnection contacts, and a set of permanent contacts, a first branch including the set of arcing contacts and the set of disconnection contacts connected in series, a second branch including the set of permanent contacts, the second branch being connected in parallel with the first branch, including a first controller and a second controller, the first controller making it possible to cause the set of arcing contacts and of the set of permanent contacts, the second controller making it possible to cause the set of disconnection contacts change over between its two positions, said disconnection contacts being able to change over towards its open position only when the set of arcing contacts and the set of permanent contacts are in their open positions, the two controllers being separate, the second being a button connected to an electric motor.Type: ApplicationFiled: December 11, 2013Publication date: November 5, 2015Applicant: ALSTOM Technology LtdInventors: Didier RODRIGUES, Denis FRIGIERE, Jean-Marc WILLIEME, Frank JACQUIER
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Patent number: 9174165Abstract: A system and method for desulfurization or acidic gas removal from a hot flue gas is provided that uses a dry sorbent injection technology with downstream sorbent reproduction based on a dual-alkali process. As such, lime and flue gas carbon dioxide are used in a process to produce the dry sorbent, sodium bicarbonate.Type: GrantFiled: August 28, 2014Date of Patent: November 3, 2015Assignee: ALSTOM Technology LtdInventor: Sanjay Kumar Dube
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Patent number: 9174168Abstract: The present invention relates to a gas cleaning system for cleaning a gas stream containing carbon dioxide and sulfur dioxide, said gas cleaning system comprising: a pre-conditioning section (3); a CO2 removal stage (5); and a post-conditioning section (4); said pre-conditioning section comprising at least two gas-liquid contacting devices (19,20) arranged upstream of the CO2 removal stage (5) with respect to the flow direction of the gas; and said post-conditioning section comprising at least two gas-liquid contacting devices (30,31) arranged downstream of the CO2 removal stage with respect to the flow direction of the gas.Type: GrantFiled: November 11, 2010Date of Patent: November 3, 2015Assignee: ALSTOM Technology LtdInventor: Peter Ulrich Koss
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Patent number: 9174275Abstract: A method for manufacturing a metal-ceramic composite structure for high temperature exposure is provided, whereby the composite structure includes a base metal structure or component, which is on at least one side covered and permanently joined with one or more ceramic tiles. The method may include the steps of: manufacturing green bodies with cavities and sintering the green bodies to receive ceramic tiles into cavities; arranging the ceramic tiles in a cast mould; pouring liquid metal into the cast mould to substantially fill the cavities; creating an intermediate metal layer; and solidifying the liquid metal to permanently join the ceramic tiles and the intermediate metal layer.Type: GrantFiled: February 25, 2014Date of Patent: November 3, 2015Assignee: ALSTOM Technology LtdInventors: Herbert Brandl, Hans-Peter Bossmann
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Patent number: 9175846Abstract: The invention concerns a fluidized bed reactor (1) made up of tubed membrane walls (2) cooled by a coolant fluid, the said walls surrounding a combustion chamber (10) and comprising tubed extension panels (3) through which flows a coolant fluid by single pass forced circulation. According to the invention the extension panels (3) are paired two by two.Type: GrantFiled: April 26, 2006Date of Patent: November 3, 2015Assignee: ALSTOM Technology LtdInventors: Jean-Xavier Morin, Daniel Baglione
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Publication number: 20150300184Abstract: A method is provided for reconditioning a turbomachine vane cover plate, by a forming apparatus. The vane having a mounting portion, an airfoil extending radially outward therefrom and a vane head connected to the airfoil. The vane also having a cover plate connected to the vane head, bulged in a direction opposite to the root. In a first analysis step, dimensions of the vane in relation to the cover plate are determined in respect of predefined reference points. If, thereafter, forming of the cover plate seems necessary and possible based on comparison of measurement values from the analysis step with predefined dimension values, the bulged cover plate is formed, at least essentially pressed smooth, by pressing by the forming apparatus in a forming step. After the forming step, the cover plate is re-treated in one or more follow-up steps. An apparatus is also provided for carrying out the method.Type: ApplicationFiled: June 29, 2015Publication date: October 22, 2015Applicant: ALSTOM Technology LtdInventors: Igor ZEBEC, Raphael SCHWEIZER, Josip STEDUL, Tobias SCHMITT, Grigyes SZUCS
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Patent number: 9162329Abstract: The method for removing an inner casing from a machine includes removing a top part of the outer casing, removing a top part of the inner casing, removing the bottom part of the inner casing, before removing the bottom part of the inner casing connecting the bottom part of the inner casing to the rotor, such that the bottom part of the inner casing is supported by the rotor, then rotating the rotor around the longitudinal axis to make the bottom part of the inner casing accessible.Type: GrantFiled: September 10, 2013Date of Patent: October 20, 2015Assignee: ALSTOM Technology Ltd.Inventors: Tobias Christoph Huber, Gerard Froidevaux, Daniel Seng, Karsten Schwarz, Ivan Rozman
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Patent number: 9163830Abstract: A sealpot for a combustion power plant includes a downcomer standpipe which receives solids of the combustion power plant, a bed including a first end and a second opposite end, the first end connected to the downcomer standpipe, a discharge standpipe disposed at the second opposite end of the bed, and an orifice plate disposed between the bed and the discharge standpipe separating the discharge standpipe from the bed. The orifice plate includes apertures disposed at a height above the bed which allow transport of fluidized solids and gas through the orifice plate.Type: GrantFiled: March 29, 2010Date of Patent: October 20, 2015Assignee: ALSTOM Technology LtdInventors: John H. Chiu, Bard C. Teigen
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Patent number: 9162177Abstract: A method for capturing ammonia present in combustion flue gas subjected to carbon dioxide removal, using a water wash unit (102) included in a chilled ammonia process, comprises: providing CO2 loaded liquid (122) comprising CO2 dissolved in the liquid; providing wash water liquid (108, 138); combining the CO2 loaded liquid with the wash water liquid to form CO2 enriched wash water liquid (105, 106) before the liquid is added said water wash unit (102); and bringing said combustion flue gas into contact with said CO2 enriched wash water liquid by adding the CO2 enriched wash water liquid to said water wash unit (102).Type: GrantFiled: January 25, 2012Date of Patent: October 20, 2015Assignee: ALSTOM Technology LtdInventors: Michael C. Balfe, Rameshwar S. Hiwale, Joseph P. Naumovitz
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Patent number: 9163829Abstract: A moving bed heat exchanger (155) includes a vessel having an upper portion (200), a lower portion (210) with a floor (272) including a discharge opening therein, and an intermediate portion (205). The vessel directs a gravity flow of hot ash particles (140) received thereby from the upper portion (200) through the intermediate portion (205) to the floor (272) of the lower portion (210) of the vessel, where the hot ash particles (140) are collected. Tubes in the intermediate portion (205) of the vessel direct a flow of working fluid in a direction substantially orthogonal to the direction of the gravity flow of the hot ash particles (140) through the intermediate portion (205) of the vessel such that heat from the hot ash particles (140) is transferred to the working fluid thereby cooling the hot ash particles (140).Type: GrantFiled: December 12, 2007Date of Patent: October 20, 2015Assignee: ALSTOM Technology LtdInventors: Robert V. Jacobs, Glen D. Jukkola, George D. Mylchreest, Bard C. Teigen, Richard E. Waryasz, Laurie Ferguson, John E. Ferguson
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Patent number: 9163833Abstract: A sealing apparatus (22) for use with a traveling grate (18) including a base (44) and one or more legs (42) extending upwardly from the base (44). The sealing apparatus (22) includes at least one flange (52) extending outwardly from one or more of the legs (42). The flange (52) includes a surface (53) extending between the leg (52) and one or more edges (52A, 52B, 52L) of the flange (52). The surface (53) includes a sealing portion (55) adjacent to the leg (52) and one or more discharge portions (56) sloped downwardly from the sealing portion (55) to one or more of the edges (52A, 52B, 52L), for discharge of wear materials therefrom. The sealing portion (55) is positioned proximate to a portion of the traveling grate (18) and defines a gap (G2) therebetween. The gap (G2) is configured to mitigate flow therethrough.Type: GrantFiled: November 1, 2010Date of Patent: October 20, 2015Assignee: ALSTOM Technology LtdInventors: Steven R. Gibowski, Ivan Semyanko, Israel Caban, Jeffrey Zak
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Patent number: 9163834Abstract: The invention refers to a forced flow steam generator (10) and to a method for its operation. The forced flow steam generator (10) has a combustion chamber (11) with a burner arrangement (20). A fuel (B) and a mixture (G) consisting of pure oxygen and flue gas (R) are fed into the combustion chamber (11) or to the burner arrangement (20) for combusting. A flue gas duct (27) is connected to the combustion chamber (11) in the flow direction (S) of the flue gas (R), and a flue gas passage (26) is connected to the flue gas duct. The flue gas (R) for the oxygen-flue gas mixture (G) is fed back from the flue gas passage (26) via a flue gas recirculation line (28). The forced flow steam generator (10) is operated in the so-called oxyfuel process. A plurality of auxiliary heating surfaces (35) are arranged in the flue gas duct (27) downstream of the burner arrangement (20).Type: GrantFiled: December 2, 2011Date of Patent: October 20, 2015Assignee: ALSTOM Technology LtdInventors: Gerhard Weissinger, Thoralf Berndt, Ralph Dobrowolski, Andreas Marquard