Patents Assigned to Alstom
  • Compressor blade
    Patent number: 9297259
    Abstract: A compressor component having an improved airfoil profile so as to eliminate previously known vibratory issues in the blade tip is disclosed. By altering the airfoil profile throughout its span, the natural frequency of the airfoil is altered so as to not coincide with a critical engine order of the compressor. Further, the present invention provides a novel airfoil profile in accordance with the coordinates of Table 1.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: March 29, 2016
    Assignee: Alstom Technology
    Inventors: Edward Len Miller, Marco Micheli, Tihomir Stojkovic, Luis Federico Puerta
  • Gas turbine power plant with flue gas recirculation and oxygen-depleted cooling gas
    Patent number: 9297311
    Abstract: 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: Grant
    Filed: March 21, 2012
    Date of Patent: March 29, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Jaan Hellat, Stefan Rofka, Michael Hoevel, Eribert Benz, Andre Burdet, Frank Sander, Felix Guethe
  • METHOD FOR MANUFACTURING A ROTATING PART OF A HYDRAULIC MACHINE, ROTATING PART MANUFACTURED ACCORDING TO THIS METHOD, HYDRAULIC MACHINE AND ENERGY CONVERSION INSTALLATION
    Publication number: 20160084216
    Abstract: A method is disclosed for manufacturing a rotating part which belongs to a hydraulic machine of an installation for converting hydraulic energy into electrical or mechanical energy. This rotating part includes blades distributed about an axis of rotation of the rotating part and extending from a leading edge to a trailing edge. This method can include manufacturing, in steel, a first part of each blade, which defines the leading edge thereof, manufacturing a second part of the blade in a material other than steel and attaching this to the first part of the blade so as to form a trailing edge.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 24, 2016
    Applicant: ALSTOM Renewable Technologies
    Inventors: Laurent BORNARD, Michel SABOURIN
  • COMPONENT OR COUPON FOR BEING USED UNDER HIGH THERMAL AND STRESS LOAD AND METHOD FOR MANUFACTURING SUCH COMPONENT OR COUPON
    Publication number: 20160082547
    Abstract: A component or coupon for use in a thermal machine under extreme thermal and mechanical conditions comprises an alloy material having a controllable grain size (d). A grain size distribution (d(X,Y,Z)) of the component or coupon corresponds to at least one of an expected temperature distribution (T(X,Y,Z)), an expected stress distribution (?(X,Y,Z)) and an expected strain distribution (?(X,Y,Z)), which vary with geometrical coordinates (X,Y,Z) of the component or coupon, such that a lifetime of the component or coupon is improved with respect to a similar component or coupon having a substantially uniform grain size.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 24, 2016
    Applicant: ALSTOM Technology Ltd
    Inventors: Jaroslaw Leszek SZWEDOWICZ, Lukas Emanuel RICHENBACHER
  • Low pressure steam turbine seal arrangement
    Patent number: 9291068
    Abstract: A seal arrangement is installed between confronting co-planar portions of a low pressure steam turbine exhaust hood and a circular bulkhead that forms part of an exhaust duct structure of a steam turbine module. The seal arrangement forms a vacuum seal between the interior and exterior of the exhaust hood and comprises a flexible gasket in the form of an annular diaphragm. This diaphragm has a radially inner circumferential portion that seals with the bulkhead, a radially outer circumferential portion that seals with the exhaust hood, and a radially median resilient portion. Sealing is achieved by providing radially inner and outer clamping flanges operative to sealingly clamp inner and outer circumferential portions of the gasket to the bulkhead and the exhaust hood respectively.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 22, 2016
    Assignee: ALSTOM Technology Ltd
    Inventors: Julien Roge, Jerome Lamaque, Xavier Laurent
  • Excitation device
    Patent number: 9293955
    Abstract: In an excitation device for stators of generators for high-induction measurement, the greatest possible compensation of the reactive power requirement is achieved. Depending on the size and energy requirement of the generator, a number of individual excitation modules with a corresponding number of individual excitation windings are provided, wherein a minimum necessary total excitation current can be supplied by superimposing the individual currents of the excitation windings.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: March 22, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventor: Max Hobelsberger
  • Propeller for a hydraulic machine, hydraulic machine equipped with such a propeller, and a method for assembling such a propeller
    Patent number: 9291145
    Abstract: A propeller for a hydraulic machine includes a hub extending along an axis of rotation of the propeller and vanes extending from the hub and wherein the propeller is formed of several sectors each including a body having a vane attached thereto and wherein the sectors are assembled together by at least one shrunk-on ring which is placed around the bodies. Each sector also includes a side wall and a projection attached to the side wall and which protrudes toward an inside of the hub perpendicularly to the axis (X-X) and wherein at least one washer is connected to the projections inside the hub.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 22, 2016
    Assignee: ALSTOM RENEWABLE TECHNOLOGIES
    Inventors: Michel Sabourin, Sébastien Beaulieu
  • Airfoil for a compressor blade
    Patent number: 9291059
    Abstract: The present disclosure provides an improved first stage airfoil for a compressor blade having a unique chord length (CD), stagger angle (?) and camber angle (??). The stagger angle (?) and camber angle (??) provide improved aerodynamics while the chord length (CD) provides for reduced airfoil weight.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: March 22, 2016
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Marco Micheli, Gabriel Dunkel, Luis Frederico Puerta, Wolfgang Kappis
  • On-load tap changer control method for a power excitation chain, related unit and power excitation chain comprising such unit
    Patent number: 9292063
    Abstract: The present invention relates to an on-load tap changer control method for a power excitation chain. The chain includes a generator, a step-up transformer equipped with an on-load tap changer and connected on the one hand to the output of the generator and on the other hand to a transmission bus, and an excitation control system with a generator automatic voltage regulator (AVRG) and one excitation limiter (OELG, UELG). The method monitors the excitation conditions of the generator, activates the one excitation limiter (OELG, UELG) when the monitored excitation conditions are outside a predefined range, and temporarily inhibits the change of step of the on-load tape changer.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: March 22, 2016
    Assignee: ALSTOM Technology Ltd
    Inventor: Carsten Meinecke
  • Inspection vehicle for the inspection of substantially cylindrical objects
    Patent number: 9291603
    Abstract: An inspection vehicle for inspecting a substantially cylindrical object composed of a magnetizable material includes a chassis. A plurality of wheels is disposed on the chassis so as to be rotatable and is configured to move the chassis in a circumferential direction along an external surface of the cylindrical object, at least some of the plurality of wheels being motor-drivable. The plurality of wheels is disposed so as to provide a chassis clearance allowing a movement of the chassis over an obstruction on the external surface of the cylindrical object. A magnetic device is disposed on the chassis and is configured to hold the vehicle on the external surface of the cylindrical object.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: March 22, 2016
    Assignee: ALSTOM Technology Ltd
    Inventors: Igor Thommen-Stamenkov, Wolfgang Zesch, Stephane Laborde
  • Spray dryer absorber vibrator device and method
    Patent number: 9289790
    Abstract: A spray dryer absorber operative for removing gaseous pollutants from a hot process flue gas and a vibrator device for removing accumulated deposits therefrom is provided. The spray dryer absorber includes a spray dryer chamber equipped with a plurality of dispersers and atomizers mounted at a roof of the spray dryer chamber. The vibrator device is operative to remove accumulated deposits from the spray dryer absorber and its components, such as its dispersers and atomizers, to avoid spray dryer absorber performance interference caused by such deposit accumulations.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: March 22, 2016
    Assignee: ALSTOM Technology Ltd
    Inventor: Saleem K. Zwayyed
  • ROTATING PART OF A HYDRAULIC MACHINE, HYDRAULIC MACHINE PROVIDED WITH SUCH A ROTATING PART AND INSTALLATION FOR CONVERTING ENERGY COMPRISING SUCH A MACHINE
    Publication number: 20160076508
    Abstract: When traversed by a flow of water, a hydraulic machine rotating part rotates around an axis of rotation. It includes runners which are distributed around the axis of rotation and each extend between a leading edge and a trailing edge. Each runner can include a first part which defines its leading edge and a second part which is attached to the first part and defines the trailing edge at least in part. The second part can be elastically deformable or displaceable in a reversible manner with respect to the first part, under the action of the flow of water, the second part defining, when the machine operates, the direction of the flow of water downstream of the runner.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Applicant: ALSTOM Renewable Technologies
    Inventors: Laurent BORNARD, Michel SABOURIN
  • Device for electric insulation of a conducting plane
    Patent number: 9287223
    Abstract: A device for insulating an electrically conducting plane having a first electric potential relatively to a second electric potential is provided. The device comprises an insulating substrate including two parallel planar surfaces, a first conducting outer layer and an electrostatic field reducer. The electrostatic field reducer reduces the value of the electrostatic field in a point of the peripheral edge, the reducer includes at least one conducting area distinct from the first outer layer, positioned on the first surface of the insulating substrate and/or in the insulating substrate. The reducer reduces the value of the electrostatic field in this point relative to the value of the electrostatic field in this point in the absence of the conducting area. The conducting area has a potential with a value strictly comprised between the values of the first and second potentials.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: March 15, 2016
    Assignee: Alstom Transport SA
    Inventors: Selim Dagdag, Michikazu Nagata, Bertrand Chauchat, Sebastien Nicolau, Toshiyuki Hamachi
  • Energy delivery system and method for a gate drive unit controlling a thyristor-based valve
    Patent number: 9287764
    Abstract: The invention concerns energy delivery system and method for a gate drive unit controlling a thyristor-based valve (19). The system comprises at least one current transformer (22) located in the main current path of the valve.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: March 15, 2016
    Assignee: ALSTOM Technology Ltd.
    Inventors: Marek Furyk, Roman Raubo, John Schwartzenberg
  • Burner system with staged fuel injection
    Patent number: 9285123
    Abstract: A burner system with staged fuel injection includes at least one burner with a mixing zone. A combustion chamber is disposed downstream of the mixing zone and a first fuel introduction device is provided upstream of the mixing zone. Furthermore, a second fuel introduction device for the direct injection of fuel into the combustion chamber, is disposed downstream of the mixing zone. In addition, at least one sensor for determining combustion parameters is connected to a control device. The control device is designed to control the second fuel introduction device as a function of the parameters determined by the sensors.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: March 15, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Mauricio Ernesto Garay, Stefano Bernero, Bruno Schuermans, Martin Zajadatz
  • CONVERTER
    Publication number: 20160072407
    Abstract: A voltage source converter includes a converter limb having limb portions separated by an AC terminal and extending between DC terminals, each limb portion including a primary switching element to switch the limb portion into and out of circuit. The converter further includes an auxiliary limb. The primary switching element of each limb portion is switchable to switch the auxiliary limb into and out of circuit with the corresponding limb portion. The converter further includes a control unit to, in one mode, inject a circulation current that flows in one direction in one of the limb portions and minimize a current flowing in the opposite direction in that limb portion. Each primary switching element switches the respective limb portion into or out of circuit following the minimization of the limb portion current by the circulation current.
    Type: Application
    Filed: April 3, 2014
    Publication date: March 10, 2016
    Applicant: ALSTOM Technology Ltd
    Inventors: David Reginald TRAINER, Kevin J. DYKE, Colin OATES
  • Once-through vertical evaporators for wide range of operating temperatures
    Patent number: 9273865
    Abstract: An evaporator for steam generation is presented. The evaporator includes a plurality of primary evaporator stages and a secondary evaporator stage. Each primary stage includes one or more primary arrays of heat transfer tubes, an outlet manifold coupled to the arrays, and a downcomer coupled to the manifold. Each of the primary arrays has an inlet for receiving a fluid and is arranged transverse to a flow of gas through the evaporator. The gas heats the fluid flowing through the arrays to form a two phase flow. The outlet manifold receives the two phase flow from the arrays and the downcomer distributes the flow as a component of a primary stage flow. One or more of the plurality of primary evaporator stages selectively form the primary stage flow from respective components of the two phase flow, and provide the primary stage flow to inlets of the secondary evaporator stage.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 1, 2016
    Assignee: ALSTOM Technology Ltd
    Inventors: Wesley P. Bauver, II, Ian J. Perrin
  • Combustion device that produces hydrogen with the re-use of captured CO2
    Patent number: 9272255
    Abstract: The combustion device according to the invention produces gases containing CO2 and water vapor and comprises a circulating fluidized bed reaction chamber (1, 2), a separator (10, 20), heat recovery means of which a part is situated in a dense fluidized bed (12, 12a, 22), wherein the part located in the bed of the heat recovery system(s) is composed of catalyst tubes (120, 120a, 220) through which a gas mixture flows. The gas mixture is composed of natural gas and/or naphtha or refinery gas or two or more of these gases. The gas undergoes reformation which converts it into a synthesis gas containing hydrogen. The fact of the catalyst tubes being situated in the dense fluidized bed made up of ashes from the combustion allows the catalyst to be reheated in a homogenous manner and the reforming reaction of the natural gas mixture to be stimulated.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: March 1, 2016
    Assignee: ALSTOM Technology Ltd
    Inventors: Jean-Xavier Morin, Corinne Beal, Silvestre Suraniti
  • APPARATUS AND METHOD FOR CONTROLLING AT LEAST ONE OPERATIONAL PARAMETER OF A PLANT
    Publication number: 20160054730
    Abstract: A method for controlling at least one operational parameter of a plant (1) having a combustion unit (3) can include estimating a status of at least one operational variable of the plant to identify an estimated value for the operational variable. For each operational variable, the estimated value for the operational variable can be compared with a measured value of the operational variable to determine an uncertainty value based on a difference in value between the measured value and the estimated value for the operational variable. A control signal can be generated based on a reference signal, the measured value, and the deviation value for sending to at least one element of the plant (1) for controlling a process of the plant (1).
    Type: Application
    Filed: August 21, 2014
    Publication date: February 25, 2016
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Xinsheng LOU, Chuan Wang, Carl H. Neuschaefer, Armand A. Levasseur
  • Rotating machine
    Patent number: 9267382
    Abstract: A rotating machine cooled by a cooling medium directed through the rotating machine in a main flow and a secondary flow includes a rotor. A stator includes a swirl passage configured to guide the secondary flow so as to be discharged from a pre-swirl nozzle. At least one control device includes a shape-memory alloy disposed in an area of the pre-swirl nozzle and is configured to control the secondary flow based on a temperature in an automated manner.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: February 23, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Jaroslaw Leszek Szwedowicz, Alexey Mozharov, Stefan Irmisch