Patents Assigned to Alstom
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Patent number: 8281486Abstract: A method for machining a gas turbine rotor which is provided with a cooling air slot which concentrically extends around the axis of the gas turbine rotor and is supplied with compressed cooling air via axial cooling air holes which at the side lead into the slot base of the cooling air slot, and the opening of which is covered by bridges which are arranged in a distributed manner over the circumference and spaced apart from each other by gaps. A crack-resistant slot shape is achieved without intervention into the configuration of the bridges by a material-removing tool, particularly a milling tool, being lowered in the gaps between the bridges one after the other into the cooling air slot and in this way the slot base of the cooling air slot being machined and widened over the entire circumference.Type: GrantFiled: November 16, 2009Date of Patent: October 9, 2012Assignee: Alstom Technology Ltd.Inventors: Wilfried Storch, Günter Gnirss, Bernd Meixner, Uwe Geissel, Michael Schwaar
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Patent number: 8282996Abstract: A process for extending the cyclic service life of thermal barrier coatings made of yttrium-stabilized zirconium oxide (YSZ) or the like which have been applied to a substrate with an oxidizing bond coat in between includes increasing or long-term stabilizing the strain tolerance of the thermal barrier coating.Type: GrantFiled: August 10, 2011Date of Patent: October 9, 2012Assignee: Alstom Technology LtdInventors: Frigyes Szuecs, Alexander Stankowski
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Publication number: 20120250262Abstract: An electronic assembly comprising: a drawer comprising sites for receiving removable boards; a compartment comprising a drawer holder and a connector holder, the drawer being able to be removably inserted into the drawer holder; a first compartment connector part associated with each board site, fastened on the connector holder and provided to be plugged in with a second compartment connector part fastened on a board due to the insertion of the drawer equipped with the board into the drawer holder; and at least one electromagnetic protection screen provided to be adjacent to a first compartment connector part and able to produce an electrical connection between the drawer holder or the connector holder and a board arranged in the site associated with the first compartment connector part when the drawer is inserted into the compartment.Type: ApplicationFiled: September 26, 2011Publication date: October 4, 2012Applicant: ALSTOM TRANSPORT SAInventors: Gregory Faucheux, Christian Ruque
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Publication number: 20120251421Abstract: Acid gas purification processes for reducing nitrosamine precursor formation from a gas stream containing NOx, wherein the acid gas is selectively absorbed in an amine based wash solution comprising at least one secondary diamine. The processes generally include absorbing carbon dioxide from the gas stream containing NOx species with the amine-based wash solution comprising at least one secondary diamine to provide a carbon dioxide lean gas stream that is released into the surroundings, wherein absorbing the acid gas forms a rich amine solution; and regenerating the rich amine solution at an elevated temperature to release the carbon dioxide to form a regenerated lean amine solution, wherein absorbing and regenerating are configured to promote formation of carbamate species of at least one diamine.Type: ApplicationFiled: January 20, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTDInventor: STEPHEN A. BEDELL
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Publication number: 20120248704Abstract: An seal is described for a turbine with a first sealing surface mounted on a stationary part of a turbine and a second sealing surface mounted on a rotating part of the turbine, the surfaces being structured such that in operation the thin film of a fluid medium is generated between the two surfaces reducing contact and/or leakage with at least one of the first or second sealing surface mounted such that it is subject to a retracting force which opens the seal while stationary or at slow rotation speeds of the turbine and subject to a force counteracting the retracting force at operational rotation speeds of the turbine. The surface of the sealing face may incorporate patterns straight or helical in nature to help induce the fluid into the gap and maintain the fluid film.Type: ApplicationFiled: March 28, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTD.Inventors: Cyril William Fennell, Vassilis Stefanis
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Publication number: 20120251777Abstract: A component for use in an engine in which the component is subjected to at least one of a high temperature, a corrosive atmosphere, an oxidizing atmosphere, a high mechanical load, a cyclic thermal load and transient conditions such that the component is prone to crack formation and propagation. At least one base material includes a self healing system in a form of an added active phase, the self healing system including at least one of a melting point depressant and a substance having a softening or a melting point below or within a range of an operating temperature of the component.Type: ApplicationFiled: March 21, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Sophie Betty Claire Duval, Daniel Beckel, Pierro-Daniele Grasso, Alexander Stankowski, Jaroslaw Leszek Szwedowicz
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Publication number: 20120251325Abstract: A rotor for a turbomachine includes at least one moving blade row including a plurality of moving blades disposed adjacent to one another in a circumferential direction with respect to an axis of rotation. Each one of the plurality of moving blades includes a blade leaf and a blade root having an outer face, the outer face of the blade root including a blade root curved end wall contour adjacent the blade leaf in the circumferential direction. The blade root curved end wall contour has a concave curvature in an axial sectional plane of the rotor. At least one rotor shaft includes a reception slot for a respective one of the at least one moving blade row extending in the circumferential direction. Each of the plurality of moving blades is inserted into the reception slot via a respective blade root.Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Applicant: Alstom Technology LtdInventors: Gabriel Dunkel, Marco Micheli, Wolfgang Kappis, Luis Federico Puerta
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Publication number: 20120251331Abstract: A system and method of extending the useable life of a gas turbine blade is disclosed in which the gas turbine blade includes an undercut configuration designed to relieve mechanical and thermal stress imparted into the pedestal region of the airfoil trailing edge. The embodiments of the present invention include turbine blade configurations having different trailing edge undercut configurations as well as additional cooling supplied to the internal passages of the trailing edge region of the turbine blade.Type: ApplicationFiled: April 1, 2011Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTD.Inventors: Douglas James Dietrich, Stephen Wayne Fiebiger, Gregory Edwin Vogel
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Publication number: 20120247103Abstract: The present invention relates to systems and methods for controlling the flow of steam provided to a gas recovery unit 130 based on changes to steam flow to and/or power generated by a power generation unit 119. The gas recovery unit 130 may be part of a thermal power generation unit and may be an amine based CO2 recovery unit including two or more regenerator columns 153.Type: ApplicationFiled: February 14, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTD.Inventors: Nareshkumar B. HANDAGAMA, Rasesh R. KOTDAWALA, Jacques MARCHAND, Vikram SHABDE
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Publication number: 20120247287Abstract: A device is provided for cutting the end winding of an electric machine. The device includes a frame, supports to block the device during operation, a cutting flexible element and an activating group for at least a cutting flexible element. A method is also provided for cutting the end winding of an electric machine. The method includes providing, within a stator core of an electric machine, a device having: a frame, supports to block the device during operation, at least one cutting flexible element, an activating group for at least a cutting flexible element. The method also includes encircling components to be cut with the cutting flexible element, and cutting the components.Type: ApplicationFiled: March 25, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Massimiliano VISINTIN, Janusz BIALIK, Edgar KOCH
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Publication number: 20120247116Abstract: A method is provided for switching over a gas turbine burner operation from liquid fuel to gas fuel and vice-versa, with the burner comprising nozzles for feeding a premixed gas fuel, nozzles for injecting a pilot gas fuel and nozzles for injecting a liquid fuel. According to the method, while the liquid fuel and the premix gas fuel are regulated to switch over from liquid fuel to gas fuel operation or vice-versa, the pilot gas fuel is controlled at a substantially constant flow rate.Type: ApplicationFiled: March 5, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Thiemo MEEUWISSEN, Stanka KOKANOVIC, Susanne Renate SCHELL, Rudolf LACHNER
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Publication number: 20120247406Abstract: An evaporator system comprises an evaporator; a drum; and a pump that are in fluid communication with each other. The pump is operative to create a temporary pressure gradient during start-up of an evaporator system and transport a fluid from the evaporator to the drum prior to the fluid reaching its boiling point in the evaporator. Following the fluid reaching its boiling point in the evaporator, the fluid naturally circulates in the evaporator system.Type: ApplicationFiled: March 28, 2011Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTD.Inventors: Wesley P. Bauver, II, Ian James Perrin, Donald W. Bairley, Rahul J. Terdalkar
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Publication number: 20120247109Abstract: An intake manifold is provided for inducting combustion air for a compressor of a gas turbine. The intake manifold includes a plurality of walls that delimit against the environment. Devices are provided for controllable change of the mechanical rigidity of the walls to reduce noise which is generated or is emitted in an air intake region during operation of the gas turbine. A gas turbine is also provided and includes an air intake to which air to be compressed is fed via an intake manifold. The intake manifold having a plurality of walls that delimit against the environment. Devices are provided to controllably change a mechanical rigidity of the walls to reduce noise which is generated or emitted in an air intake region during operation of the gas turbine.Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Armin Busekros, Thomas Kramer, Jochem Fischer, Juergen Hoffmann
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Publication number: 20120247104Abstract: The present invention relates to systems and methods for providing steam to a gas recovery unit 130 based on changes to steam flow to and/or power generated by a power generation unit 119. The gas recovery unit 130 may part of a thermal power generation unit 100 and may be an amine based CO2 recovery unit including two or more regenerator columns 153.Type: ApplicationFiled: March 28, 2012Publication date: October 4, 2012Applicants: DOW GLOBAL TECHNOLOGIES LLC., ALSTOM TECHNOLOGY LTD.Inventors: Nareshkumar B. HANDAGAMA, Rasesh R. KOTDAWALA, Staffan Jönsson, Allen M. PFEFFER, Olivier DRENIK, Jacques MARCHAND, Craig Norman SCHUBERT
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Patent number: 8277545Abstract: The subject matter disclosed herein relates to a method of reducing an amount of mercury discharged to an environment in a flue gas (12) generated by combustion of a fuel source. The method includes contacting the flue gas with a moist pulverous material upstream of a particle separator (24), mixing powdered activated carbon (PAC) in an amount between about 0.5 lb/MMacf and 10 lbs/MMacf with the flue gas (12) upstream of the particle separator (24), wherein the PAC interacts with at least a portion of mercury containing compounds in the flue gas (12), and separating the mercury containing compounds from the flue gas (12) containing the moist pulverous material and PAC, thereby reducing an amount of mercury in the flue gas (12).Type: GrantFiled: June 23, 2010Date of Patent: October 2, 2012Assignee: ALSTOM Technology LtdInventor: Leif A. V. Lindau
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Publication number: 20120242484Abstract: The invention relates to a method for transferring alarm data between a first broken-down train (A) and a control centre (2) comprising: evaluating the state of the first train; and then the state of the first train corresponding to a break down; determining if it is possible to establish a first link between the first train and a ground infrastructure (1) connected to the centre; if not, establishing a backup radio link between first independent communication means (50) of the first train and second independent communication means (50?) of a second train rolling in the vicinity of the first train; transferring the alarm data concerning the first train and storing the same into storage means of the second train; establishing a second link between the second train and the ground infrastructure and transferring the alarm data concerning the first train from the second train to the centre.Type: ApplicationFiled: April 30, 2010Publication date: September 27, 2012Applicant: ALSTOM TRANSPORT SAInventors: Didier Van Den Abeele, Marion Berbineau, Martine Wahl
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Publication number: 20120240871Abstract: A heat recovery steam generator that includes a first steam drum for receiving a flow of water and steam from an evaporator. The first steam drum is adapted to provide the flow of water and steam to a second steam drum. The second steam drum is in fluid communication with the first steam drum and receives the flow of water and steam from the first steam drum and separates steam from the flow of water and steam to form a separated steam. There is a steam flow outlet positioned in the second steam drum, the steam flow outlet adapted to release the separated steam from the second steam drum.Type: ApplicationFiled: March 23, 2011Publication date: September 27, 2012Applicant: ALSTOM Technology Ltd.Inventors: Donald W. Bairley, Wesley P. Bauver, II, Francois Droux, Alan C. Hazelton, Ian J. Perrin, Christoph Ruchti, Falk Ruecker, Glenn T. Selby
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Publication number: 20120245737Abstract: Gas purification systems generally include an analyzing unit including a plurality of sensors and/or probes for continuously analyzing a solvent cyclic capacity in real time, the plurality of sensors and/or probes in fluid communication with rich amine and lean amine solution carrying conduits and the water wash conduits; and a system control unit configured to receive outputs from the analyzing unit for monitoring and controlling the solvent cyclic capacity in real time. Also disclosed are computer implemented methods for providing the real time control.Type: ApplicationFiled: February 22, 2012Publication date: September 27, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: ZHENG LIU, NARESHKUMAR B. HANDAGAMA, RASESH R. KOTDAWALA, BARATH BABURAO, VIKRAM S. SHABDE
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Publication number: 20120240590Abstract: A method is disclosed for operating a gas turbine power plant having a gas turbine, a heat recovery steam generator and an flue gas splitter which splits flue gases into a first flue gas flow for recirculation into an inlet flow of the gas turbine and into a second flue gas flow for discharge to an environment. An oxygen-depleted gas can be used in an open cooling system for cooling hot gas parts of the gas turbine. A split compressor intake can be provided for separate feed of recirculated flue gas and fresh air into a compressor intake. Compressor blades can include a separating band which blocks intermixing of recirculated flue gas and fresh air during compression.Type: ApplicationFiled: March 21, 2012Publication date: September 27, 2012Applicant: ALSTOM Technology LtdInventors: Jaan HELLAT, Stefan Rofka, Michael Hoevel, Eribert Benz, Andre Burdet, Frank Sander, Felix Guethe
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Publication number: 20120243977Abstract: A seal for reducing a fluid flow around tips of rotating blades of a turbine includes a plurality of diaphragms disposed in succession and providing an outer support for a radial arrangement of static blades disposed alternatingly with the rotating blades in an axial direction. An outer seal has axial and radial supports. The radial support includes a ring held in position by a key and a circumferential extension of the ring. The key and the circumferential extension have a clearance so as to allow a relative radial movement between the ring and a part of a casing or the plurality of diaphragms and providing a pressure sealing face and support in the axial direction.Type: ApplicationFiled: March 22, 2012Publication date: September 27, 2012Applicant: ALSTOM Technology LtdInventor: Christophe Simonet
