Patents Assigned to Ansaldo Energia Switzerland AG
  • Combustor for a sequential gas turbine having a deflection unit between first and second combustion chambers
    Patent number: 10222067
    Abstract: The invention provides a new path of combustion technology for gas turbine operation with multifuel capability, low emissions of NOx and CO and high thermal efficiency. Further to the present invention providing a method for operating a combustor for a gas turbine and a combustor for a gas turbine are disclosed. The combustor includes a first combustion chamber with a wide operating range, a subsequent deflection unit for deflecting the hot gas flow of the first combustion chamber at least in circumferential direction and components for injecting and mixing additional air and/or fuel, and a sequential combustion chamber with a short residence time, where the temperature of the hot gases reaches its maximum.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: March 5, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Klaus Doebbeling, Ewald Freitag
  • Burner of a gas turbine with a lobed shape vortex generator
    Patent number: 10215416
    Abstract: The burner of a gas turbine has a duct, a vortex generator extending in the duct and including a leading edge and a trailing edge. The trailing edge has a first order lobed shape. The first order lobed shape is defined by a second order lobed shape. Preferably a nozzle for fuel injection is connected to the vortex generator and the second order lobed shape is only provided at the nozzles.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: February 26, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Michael Dusing, Madhavan Narasimhan Poyyapakkam, Stefan Wysocki
  • Sequential combustor arrangement with a mixer
    Patent number: 10215417
    Abstract: The invention refers to a sequential combustor arrangement having a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer includes of injection tubes pointing inwards from the side walls of the mixer for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber. A flow guide is arranged in the connecting duct and/or the injection tubes for guiding the dilution gas into the injection tubes. The invention further refers to a gas turbine and a method for operating a gas turbine with such a sequential combustor arrangement.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: February 26, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Xianfeng Gao, Luis Tay Wo Chong Hilares
  • Method and gas turbine combustion system for safely mixing H2-rich fuels with air
    Patent number: 10208958
    Abstract: A method and apparatus are disclosed for mixing H2-rich fuels with air in a gas turbine combustion system, wherein a first stream of burner air and a second stream of a H2-rich fuel are provided. All of the fuel is premixed with a portion of the burner air to produce a pre-premixed fuel/air mixture. This pre-premixed fuel/air mixture is injected into the main burner air stream.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 19, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Richard Carroni, Fernando Biagioli
  • Method for operating a gas turbine installation and equipment for carrying out the method
    Patent number: 10208960
    Abstract: A method is provided for operating a gas turbine installation which has at least one compressor for compressing combustion air, at least one combustion chamber for combusting a supplied fuel, using the compressed combustion air, and also at least one turbine which is exposed to throughflow by the hot gases from the at least one combustion chamber. Both a first fuel on a carbon base, especially in the form of natural gas, and also a second fuel, in the form of a hydrogen-rich fuel or pure hydrogen, are used as fuel. A reduction of the CO2 emission without basic modifications to the installation is achieved by the first and the second fuels being intermixed and combusted together in the at least one combustion chamber.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: February 19, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Andreas Brautsch, Richard Carroni
  • Integrated dual fuel delivery system
    Patent number: 10197283
    Abstract: The present invention relates to dual fuel delivery system for a gas turbine. A dual fuel delivery system for a gas turbine includes: a main fuel line having a main fuel oil conduit and a main fuel gas conduit, wherein the main fuel gas conduit encloses, at least partially, the main fuel oil conduit; and a fuel ring connected to the main fuel line, the fuel ring having a fuel gas ring connected to the main fuel gas conduit and a fuel oil ring connected to the main fuel oil conduit, wherein the fuel gas ring encloses, at least partially, the fuel oil ring.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: February 5, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Fridolin Heynen, Inaki Maiztegui
  • Compressor assembly for gas turbine
    Patent number: 10174636
    Abstract: A compressor assembly, and more in general relates to a compressor for a gas turbine providing a solution that teaches to locate within a cavity formed by the outer casing of the compressor and the inner vane carrier a separator element, or membrane, such to divide the cavity into two sub-cavities. This advantageously results in a more flexible design with respect to the positioning of the flange blow-off extractor and to the cavity sizing, as the flange position is not necessarily the boundary for the flow anymore as it would be without the separator element.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: January 8, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Thomas Zierer, Sven Olmes, Isaac-Eliseo Gomez-Lor-Lopez
  • Device and method for mounting or dismantling, replacement and maintenance of a can-combustor
    Patent number: 10174637
    Abstract: The present invention concerning of a device for mounting or dismantling, replacement and maintenance of a can-combustor of a gas turbine engine including an assembly tool or assembly tool with additional frame having at least one lifting beam, at least one linear driver, wheels, at least one eccentric rolling hook for fixation of the gas turbine housing, optionally spacers for building the interface to the can-combustor, adapters, lifting points for the main crane. The eccentric rolling hook is connected to the gas turbine housing by giving in axial or quasi-axial direction a force for mounting or dismantling the can-combustor from the gas turbine housing.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: January 8, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Jost Imfeld, Hans-Christian Mathews
  • Centering arrangement of two parts relative to each other
    Patent number: 10167739
    Abstract: A centering arrangement includes a ring-like inner part and a ring-like outer part, whereby the outer part surrounds the inner part in a concentric arrangement and with an interspace established between the outer part and the inner part, and whereby the outer part and the inner part are subject to a differential radial expansion. A centering contact element, procures a centering mechanical contact between the outer part and the inner part at a plurality of circumferentially distributed contact points, and is able to deform in order to compensate for differential radial expansion.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 1, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Urs Benz, Paul Marlow, Jost Imfeld
  • Gas turbine and method for its operation
    Patent number: 10156242
    Abstract: A gas turbine and method are disclosed by which the gas turbine can be safely operated at nominal speed with reduced margin to a surge limit of a compressor. The gas turbine, via a directly driven generator which generates alternating current with an operating frequency and which is connected in a frequency-coupled manner to an electricity grid, can deliver electric power to this grid. In the case of an underfrequency event the compressor of the gas turbine is unloaded by controlled, fast closing of the variable compressor guide vanes (VGV) and as a result maintains a sufficient margin to the surge limit of the compressor.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: December 18, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Herbert Fuchs, Anton Nemet, Jürgen Hoffmann
  • Rotor heat shield and method for securing the same into a rotor assembly
    Patent number: 10156141
    Abstract: The present disclosure generally relates to a rotor assembly, and in particular relates to an improved rotor heat shield which provides an innovative configuration for securing the same to the rotor assembly. The rotor heat shield element is secured to the rotor assembly in correspondence of the groove in which it is inserted. Embodiments of the present disclosure can allow the removal of current fixation features on heat shields and blades. Furthermore, since the heat shield is no longer connected to a blade but directly to the rotor assembly, there is more freedom in selecting the number of heat shield elements to be provided to form the circumferential heat shield.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: December 18, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Edgar Font-Calafell, Carlos Simon-Delgado, Fabian Neubrand
  • Combustor arrangement with fastening system for combustor parts
    Patent number: 10151489
    Abstract: A combustor arrangement with a front panel, a combustor liner, and a carrier structure element is provided for carrying the front panel and the combustor liner, wherein the combustor arrangement further includes a fastening system for connecting the front panel, the combustor liner, and the carrier structure element to one another. The fastening system includes at least one elastic connection element, the latter being fixedly connected to the carrier structure element and extending therefrom to the combustor liner and to the front panel. The elastic connection element is further fixedly connected to the combustor liner and/or the front panel such as to clamp the front panel, the combustor liner, and the carrier structure element to one another in a substantially fluid tight manner.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: December 11, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Ulrich Rathmann, Naresh Aluri
  • Sequential combustion arrangement with dilution gas
    Patent number: 10151487
    Abstract: The invention refers to a sequential combustor arrangement including a first combustor with a first burner for admitting a first fuel into a combustor inlet gas during operation and a first combustion chamber for burning the first fuel, a dilution gas admixer for admixing a dilution gas to the first combustor combustion products leaving the first combustion chamber, and a second burner for admixing a second fuel and a second combustion chamber. To assure good mixing over a wide operating range, the ratio of the pressure loss of the first combustor to the pressure loss of the dilution gas admixer is in the range of 1 to 6. The invention further refers to a gas turbine including such a sequential combustor arrangement as well as method for operating a gas turbine with such a sequential combustor arrangement.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: December 11, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Michael Duesing, Ewald Freitag
  • Method of operating a gas turbine assembly and the gas turbine assembly
    Patent number: 10151250
    Abstract: The invention relates to a method of operating a gas turbine assembly, which includes a compressor, a combustor and a gas turbine. The method includes operating the gas turbine assembly at a partial load with respect to a base load of the gas turbine assembly; bypassing a portion of blow-off air from the compressor; and introducing the portion of blow-off air into an exhaust gas duct after the gas turbine. The gas turbine assembly, when operating at partial load, can maintain the air-to-fuel ratio approximately constant and hence to control the combustion flame temperature at a level where emissions are kept below the permission limit.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: December 11, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Klaus Doebbeling, Anton Nemet, Martin Zajadatz, Rene Waelchli
  • Method for determining the temperature inside a combustor
    Patent number: 10145558
    Abstract: A method for determining the temperature of an aggressive and/or abrasive gas is described using an acoustic transmitter and an acoustic receiver. The transmitter emits an acoustic signal with varying frequencies and the receiver extracts from the acoustic input signal a frequency of the maximum. Based on this the frequency of this maximum the temperature of the gas between transmitter and receiver is calculated.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: December 4, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Bruno Schuermans, Dominik Wassmer
  • Mounting and dismounting device for a liner of a gas turbine and a related method
    Patent number: 10132243
    Abstract: A mounting and dismounting device for a liner of a gas turbine includes two inner rails attached at the turbine housing and each one having a first straight portion, two straight outer rails releasably attached at the turbine housing, wherein the adjacent free ends of the inner and outer rails can be positioned in full alignment one to the other. The rails are adapted to support the liner to be moveable in its axial direction. The inner rails include a second straight portion connected to the first straight portion through a curved portion wherein the axis of the second straight portion is parallel to the axis of the combustion gas passageway.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: November 20, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Stephen Wilder Jorgensen, Joshua R. McNally, Heinz Gerber, Davide Aratori, Douglas Anthony Pennel, Daniel Seng
  • Arrangement of a rotor and at least a blade
    Patent number: 10132172
    Abstract: It is disclosed an arrangement of a rotor and at least a blade. The blade includes a root, a platform and an airfoil. The rotor includes a seat for the root. The root has side walls which complement side walls of the seat and axial walls between the side walls. A chamber is provided between the root and the rotor. A shank cavity is provided between the root and the platform. A lock plate facing at least an axial wall is connected to the rotor and the blade. The lock plate has at least a slot on a side facing the root.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: November 20, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Carl Berger, Marco Lamminger, Christoph Didion, Cyrille Bricaud, Philippe Thomas Lott, Igor Tsypkaykin
  • Damper of a gas turbine with a gap
    Patent number: 10125987
    Abstract: A damper for a gas turbine combustion chamber as shown in FIG. 1 includes a damper volume wall and a main neck. The damper volume wall defines a damper volume inside the damper volume wall. The main neck includes a main neck wall defining a main neck volume inside the main neck wall. The main neck is associated with the damper volume for fluid communication between the damper volume and the gas turbine combustion chamber. In addition, the damper includes a gap between the main neck wall and the damper volume wall. The main neck defines a main neck axis. For example, the gap is a second neck, and in further embodiments, multiple damper volumes are provided.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: November 13, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Devis Tonon, Mirko Ruben Bothien
  • Rotor shaft with cooling bore inlets
    Patent number: 10113432
    Abstract: The invention relates to a rotor shaft adapted to rotate about a rotor axis thereof. The rotor shaft includes a rotor cavity configured concentrically or quasi-concentrically to the rotor axis inside the rotor shaft, and a plurality of cooling bores extending radially or quasi-radially outward from the inside to an outside of the rotor shaft. Each cooling bore having a bore inlet location and a distal bore outlet portion, the respective bore inlet location being adapted to abut on the rotor cavity. At least one side or part-side of the cooling bore inlet location is provided with an asymmetric edge fillet in order to maximize the wall thickness between two adjacent cooling bores.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: October 30, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Steffen Holzhaeuser, Carlos Simon-Delgado, Carl Berger
  • Flow sleeve deflector for use in gas turbine combustor
    Patent number: 10113745
    Abstract: An apparatus for providing improved cooling to a combustion liner of a gas turbine combustor is provided. A plurality of flow deflectors is secured to a flow sleeve in order to improve the flow of impingement air from a flow sleeve to the combustion liner outer surface, such that the amount of impingement air being swept away by a cross flow of cooling air is reduced.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: October 30, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Alex Torkaman, Gregory Vogel, Richard Whiting, Jeff Tessier, Wes Smith