Patents Assigned to Ansaldo Energia Switzerland AG
  • Patent number: 10590790
    Abstract: The invention concerns a conical hula seal wherein an inner part of the conical hula seal is closer to a conical hula seal longitudinal axis than an outer part of the conical hula seal, and wherein the conical hula seal extends in a circumferential direction relative to the conical hula seal longitudinal axis. A gas turbine which includes the conical hula seal is also disclosed, along with a method of operating a gas turbine which includes a conical hula seal that seals a gap between a first vane and a picture frame, the method including purging the gap with a cooling fluid.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: March 17, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Hans-Christian Mathews, Urs Benz, Frank Graf
  • Patent number: 10584643
    Abstract: A method for operating a supply assembly configured for supplying fuel gas and an inert purge media to a gas turbine combustor, the method including supplying fuel gas in a fuel gas circuit with an upper flow rate; reducing the fuel gas flow rate in the fuel gas circuit from the upper flow rate to a lower flow rate; stopping the supply of the fuel gas in the fuel gas circuit; and starting the supply of the inert purge media in the inert purge media circuit, wherein the starting is performed before the stopping to have a temporary parallel supply of fuel gas and of inert purge media to a fuel distribution system.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: March 10, 2020
    Assignee: Ansaldo Energia Switzerland AG
    Inventors: Susanne Renate Schell, Martin Liebau
  • Patent number: 10577946
    Abstract: A blade includes an airfoil and a root having diverging walls. The diverging walls are made of a ceramic matrix composite material. A reinforcement element is provided between the diverging walls.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: March 3, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Nicholas Thomas, Stergios Goutianos, Rudolf Kellerer, Nils Ohlendorf
  • Patent number: 10546070
    Abstract: The damper arrangement includes a plurality of interconnected volumes and a plurality of necks for connecting the damper to a combustion chamber at a plurality of contact points. The plurality of necks are connected to the plurality of volumes.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: January 28, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Jaan Hellat, Mirko Ruben Bothien, Bruno Schuermans, Andreas Huber, Nicolas Noiray
  • Patent number: 10544940
    Abstract: A fuel injector device includes a body having a leading edge and a trailing edge and defining a streamwise direction from the leading edge to the trailing edge. The fuel injector device body includes a first surface and a second surface opposite the first surface, each surface extending between and including the leading edge and the trailing edge, and the surfaces conjoining each other at the leading edge and the trailing edge. The trailing edge, when seen in the streamwise direction, undulates along a trailing edge mean line and, along its extent, deviates in opposite directions from the mean line and includes at least one inflection point along its extent.
    Type: Grant
    Filed: March 29, 2016
    Date of Patent: January 28, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Kaspar Loeffel, Yang Yang, Adnan Eroglu, Michael Thomas Maurer, Nico Biagioli, Alexey Stytsenko, Sergey Mylnikov, Igor Baibuzenko
  • Patent number: 10544680
    Abstract: A gas turbine having a compressor section provided with a plurality of compressor blades and vanes for compressing air; a combustion section; a turbine section a rotor having an axis and extending from a compressor section to the turbine section for supporting the compressor and turbine blades, the rotor having a last rotor disk having a downstream portion for supporting a bearing cover and an upstream portion for supporting a last turbine blade; and a cooling duct system configured for supplying cooling air from a downstream end of the turbine section to the last turbine blade passing inside the last rotor disk, and having an axial bore in the downstream portion of the last rotor disk along the rotor axis; and a first plurality of inclined radial bores in the upstream portion of the last rotor disk off the axis.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: January 28, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Klaus Döbbeling, Gerard Dusomos, Jose Anguisola McFeat
  • Patent number: 10544939
    Abstract: A burner for a combustion chamber of a gas turbine with a mixing and injection device, which includes a limiting wall that defines a gas-flow channel and at least two streamlined bodies. Each streamlined body extends in a first transverse direction into the gas-flow channel, and has two lateral surfaces that are arranged essentially parallel to the main-flow direction. The lateral surfaces are joined to one another at their upstream and downstream sides to form leading and trailing edges of the body, respectively. At least one of the streamlined bodies includes a mixing structure and at least one fuel nozzle at its trailing edge for introducing at least one fuel essentially parallel to the main-flow direction into the flow channel. At least two of the streamlined bodies have different lengths along the first transverse direction such that they may be used for a can combustor.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: January 28, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Andrea Ciani, John Philip Wood, Douglas Anthony Pennell, Ewald Freitag, Urs Benz, Andre Theuer
  • Patent number: 10544736
    Abstract: A combustion chamber including a body with a fuel supply duct for supplying a fuel into the body and a carrier air supply duct for supplying air into the body. An adjusting system adjusts the carrier air mass flow supplied into the body according to the features of the fuel.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: January 28, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Madhavan Narasimhan Poyyapakkam, Khawar Syed, Klaus Knapp, Torsten Wind
  • Patent number: 10539322
    Abstract: A method for determining fatigue lifetime consumption of an engine component, by defining a reference thermal load cycle, the reference thermal load cycle being characterized by a reference load cycle amplitude and a reference load cycle time, and determining a reference load cycle lifetime consumption. The method includes measuring a temperature of the engine component, determining a thermal load cycle based upon the temperature measurement, determining a load cycle amplitude, determining a load cycle time, relating the load cycle time to the reference load cycle time, thereby determining a load cycle time factor, relating the load cycle amplitude to the reference load cycle amplitude, thereby determining a load cycle amplitude factor, combining the load cycle time factor and the load cycle amplitude factor into a combined load cycle factor for determining a load cycle lifetime consumption.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: January 21, 2020
    Assignee: Ansaldo Energia Switzerland AG
    Inventors: Felipe Bolaños-Chaverri, Torsten Wind, Fernando Biagioli, Khawar Syed
  • Patent number: 10533442
    Abstract: A gas turbine membrane seal is disclosed. The gas turbine membrane seal includes a membrane, the membrane configured and arranged to extend from a first gas turbine component to a second gas turbine component and to separate two volumes, and an anti-fretting part configured and arranged to be attached to the first gas turbine component. A face of the anti-fretting part is adjacent to the membrane, and the face of the anti-fretting part is convex. Further embodiments of the gas turbine membrane seal are also described, along with a gas turbine having the gas turbine membrane seal and a retrofitting method.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: January 14, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Milad Maleki, Robert Przybyl, Thomas Huber
  • Patent number: 10527284
    Abstract: The present invention relates to dampers for gas turbines and, for example, to a compensation assembly for a damper of a gas turbine for reducing the pulsations occurring in the combustion chamber. The damper can include a resonator cavity with a neck tube in flow communication with the interior of the combustion chamber, wherein the compensation assembly includes a spherical joint associated to the neck tube and configured to allow relative rotation between the combustion chamber and the resonator cavity, and having a bulb portion disposed around the neck tube and a spherical socket configured to internally host the bulb portion, wherein the spherical socket can have a top collar portion and a bottom collar portion connected to each other.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: January 7, 2020
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Karolina Krystyna Sobol, Christoph Welti, Urs Benz
  • Patent number: 10508563
    Abstract: A stator heat shield segment for a gas turbine includes an inner surface facing a hot gas main flow of the gas turbine; an outer surface opposite to the inner surface and at least partially exposed to cooling air; a first impingement cavity provided with a plurality of first impingement holes fluidly connected with the cooling air supplied outside the outer surface; a feeding cavity isolated from the cooling air supplied outside the outer surface and fluidly connected with first impingement cavity; and a second impingement cavity provided with a plurality of second impingement holes fluidly connected to the feeding cavity.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: December 17, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Magali Cochet, Andrey Sedlov, Maxim Plodistyy
  • Patent number: 10508954
    Abstract: A temperature detecting device for a gas turbine power plant is provided with at least one optical probe configured to detect a parameter indicative of a temperature and with at least one capsule configured to define a camera inside which the optical probe is housed.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 17, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Guelru Kocer, Ken Haffner
  • Patent number: 10502423
    Abstract: An exemplary sequential combustor arrangement includes 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 at least three groups 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. The first injection tubes of the first group have a first protrusion depth, the second injection tubes of the second group have a protrusion depth, and the third injection tubes of the third group have a third protrusion depth.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: December 10, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Xianfeng Gao, Luis Tay Wo Chong Hilares
  • Patent number: 10487663
    Abstract: The present invention relates to an airfoil for a gas turbine, including an improved turbulator arrangement formed on an inner cooling channel of the airfoil. According to preferred embodiments of the invention, in order to ensure a constant angle of the cooling flow inside the channel relative to each turbulator, the angle formed between the turbulator and the vertical axis is advantageously adapted, in the curved area, for every single turbulator. Furthermore, the same principle may be applied to all the cooling channels present within the airfoil.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: November 26, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Rainer Bauer, Shailendra Naik, Marc Henze
  • Patent number: 10480404
    Abstract: A method is disclosed for injecting water into a multistage axial compressor of a gas turbine. With low equipment cost, a significant power enhancement can be achieved, even under changing boundary conditions, by water being injected at a plurality of points along the axial compressor, and by the injected water mass flow being controlled at the individual injection points in accordance with ambient conditions and operating parameters of the gas turbine in such a way that an evened-out loading in the individual stages of the axial compressor can be created.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: November 19, 2019
    Assignee: Ansaldo Energia Switzerland AG
    Inventors: Luis Puerta, Marco Micheli, Wolfgang Kappis, Erik Peter Boldt
  • Patent number: 10481017
    Abstract: A temperature probe and method for determining a temperature in a gas flow are disclosed. The probe includes a probe body. A free flow temperature sensor a free flow temperature of the gas flow and a total temperature sensor measures a total temperature of the gas flow. The method includes measuring a flow temperature in a free gas flow, providing a static gas volume in which essentially all kinetic energy of the flowing gas is recovered and converted into thermal energy, and measuring a total temperature in the static gas volume. An accurate determination of the total temperature of a gas flow, which is representative of a specific total enthalpy, can thereby be achieved while detecting fast and transient temperature changes.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: November 19, 2019
    Assignee: Ansaldo Energia Switzerland AG
    Inventors: Hanspeter Zinn, Joerg Rinn, Mark Clark
  • Patent number: 10473333
    Abstract: The invention proposes a vortex generating arrangement, especially for a pre-mixing burner of a gas turbine, having an air conducting channel of predetermined height extending between two essentially parallel channel walls and having a predetermined direction of air flow, and having a plurality of vortex generators arranged in the channel. An improved mixing is achieved by the vortex generators each having the shape of a triangular plate, which is arranged essentially perpendicular to the channel walls and oriented relative to the direction of air flow with a predetermined off-axis angle ?0°, and a first side of the triangular plate being oriented perpendicular to the channel walls.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: November 12, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Yang Yang, Michael Düsing
  • Patent number: 10465552
    Abstract: In a method for the control and protection of a gas turbine a gas turbine performance and lifetime indicative process quantity is estimated from a set of available process signals. The gas turbine performance and lifetime indicative process quantity is simultaneously evaluated by two different estimation methods, whereby a first estimation method has a high prediction accuracy, and a second estimation method has a high availability, a continuous adaptation of the second estimation method is conducted in order to align the output signals of the two estimation methods, and in case of a failure detected in the supervision of the first estimation method the adaptation of the second estimation method is stopped, and the output of the first estimation method is switched to the output of the second estimation method.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: November 5, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Eric Andre Mueller, Andreas Belzner
  • Patent number: 10450885
    Abstract: A stator heat shield for a gas turbine having a hot gas flow path, is disclosed. The stator heat shield includes a first surface configured to face the hot gas flow path of the gas turbine; a second surface opposite to the first surface; cooling channels for directing cooling fluid from the second surface towards the first surface; and cavities arranged at the first surface for receiving the cooling fluid from at least a part of the cooling channels; wherein at least a part of the cavities each have at least two corresponding cooling channels open thereto, the at least two corresponding cooling channels being inclined towards each other. In use, a vortex is created in the cavity.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: October 22, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Andrey Sedlov, Maxim Plodistyy, Sergey Vorontsov