Patents Examined by William H. Rodriguez
  • Patent number: 11313562
    Abstract: A method for operating a burner arrangement of a heat engine, particularly a gas turbine, having a plurality of burners, each having at least one pilot burner and main burner, in which method, on the basis of a preset operation of the heat engine, the total quantity of fuel supplied to the burners is maintained substantially constant in a load-controlled manner: in a first group of burners, for each burner, both the pilot burner as well as the main burner are supplied with fuel; in a second group of burners, the fuel supply to the main burners is interrupted, while the pilot burners continue to be operated; and the fuel quantity remaining as a result of the interruption of the fuel supply to the main burners of the second group is redistributed to the still active main burners of the first group. CO emissions are reduced as a result.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 26, 2022
    Assignee: Siemens Energy Global GmbH & Co. KG
    Inventors: Udo Schmitz, Carsten Seiler, Stefan Wyhnalek
  • Patent number: 11306918
    Abstract: A heat transfer mechanism is provided comprising a plurality of turbulators located along a surface of a body, such as a combustion liner. The turbulators have a first side with a first ramp angle, a second side with a second ramp angle, a height, and a base width, where the base width is a function of the height and where the turbulators are spaced an axial distance apart that is a function of the turbulator height.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: April 19, 2022
    Assignee: Chromalloy Gas Turbine LLC
    Inventors: Daniel L. Folkers, Vincent C. Martling, Zhenhua Xiao, John Bacile
  • Patent number: 11300047
    Abstract: A combustion device includes an ammonia supply unit supplying primary reduction ammonia as a nitrogen oxide reducing agent into a combustor and mixing secondary reduction ammonia with combustion exhaust gas discharged from the combustor to reduce nitrogen oxide contained in the combustion exhaust gas and a controller configured to control at least one of the amount of supply of the primary reduction ammonia and the amount of mixing of the secondary reduction ammonia with the combustion exhaust gas in accordance with concentrations of residual nitrogen oxide and residual ammonia contained in the combustion exhaust gas after being discharged from the combustor.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 12, 2022
    Assignee: IHI Corporation
    Inventors: Shintaro Ito, Soichiro Kato, Masahiro Uchida, Shogo Onishi, Taku Mizutani, Tsukasa Saitou, Toshiro Fujimori
  • Patent number: 11300293
    Abstract: A fuel injector comprising a first air swirler passage and a second air swirler passage extending axially through the fuel injector and arranged to direct air through the fuel injector, a splitter arranged between the first air swirler passage and the second air swirler passage and comprising a first splitter surface having a first divergent portion which is divergent in the downstream direction, a second splitter surface located radially inward of the first splitter surface and having a second divergent portion which is divergent in the downstream direction, a third splitter surface located radially inward of the first and second splitter surface, and a first connecting surface extending between the second and third splitter surfaces, wherein a first cavity is formed between the first and second splitter surfaces, and the second divergent portion comprises at least one opening in fluid communication with the first cavity.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 12, 2022
    Assignee: ROLLS-ROYCE plc
    Inventors: Luca Tentorio, Juan Carlos Roman Casado, Giacomo Di Chiaro, Jonathan Knapton, Filippo Zambon, Radu Irimia
  • Patent number: 11293376
    Abstract: A nacelle comprising a fixed structure with a fixed cowl and a duct, a mobile assembly with a chassis forming a frame and a mobile cowl, the chassis being mobile, relative to the fixed structure, in translation between an advanced position and a retracted position to open an opening through the frame between the duct and the outside. The mobile assembly comprises at least one threaded rod parallel to the direction of displacement and fixed to the chassis through the frame. The fixed structure comprises an outer, an inner, and at least one intermediate box fixed to the inner box and to the outer box. For each threaded rod, the fixed structure comprises a motorized ball nut which meshes with the threaded rod, and an actuator which turns the ball nut and is fixed to at least one box from among the outer, the inner, or the intermediate box.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: April 5, 2022
    Assignee: AIRBUS OPERATIONS SAS
    Inventors: Antoine Cousin, Laurent Caliman, Jérôme Gaillardo
  • Patent number: 11286866
    Abstract: The gas turbine comprises a compressor, a combustor, and a turbine. The method comprises: compressing air with the compressor and feeding compressed air continuously to the combustor, feeding fuel to the combustor, continuously firing the mixture of fuel and gas in the combustor, feeding combustion gases from the combustor to the turbine, and supplying at least a portion of the total amount of fuel that is supplied to the combustor intermittently.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: March 29, 2022
    Assignee: Finno Energy Oy
    Inventors: Timo Erämaa, Heikki J. Salminen
  • Patent number: 11286862
    Abstract: A combustor system for a gas turbine engine includes a combustor case, a combustor liner disposed within the combustor case and defining a main combustion chamber, a dome defining an upstream end of the main combustion chamber, and at least one torch injector attached to the dome of the main combustion chamber configured to inject combustion gases into the main combustion chamber. Each torch injector includes a torch injector housing defining and surrounding a torch combustion chamber configured to house a combustion reaction, an outlet passage defined by the torch injector housing, an electrothermal ignition source extending at least partially into the torch combustion chamber, and a fuel injector configured to inject fuel into the torch combustion chamber to at least partially impinge on the electrothermal ignition source and generate the combustion gases. The outlet passage directly fluidly connects the torch combustion chamber to the main combustion chamber.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: March 29, 2022
    Assignee: Delavan Inc.
    Inventors: Jason Ryon, Lev Alexander Prociw, Brandon P. Williams
  • Patent number: 11287134
    Abstract: A combustor may include a combustor liner and flow sleeve. A high pressure air cools an outer surface of the combustor liner via openings in the flow sleeve, creating a lower pressure air in an annulus between the combustor liner and the flow sleeve. A first fuel nozzle is positioned at a primary combustion zone, and a second fuel nozzle is positioned at a secondary combustion zone of the liner. A fuel source is configured to deliver a fuel to the fuel nozzles. The fuel nozzles produce a premixture of high pressure air and the fuel, and produce a mixture of the premixture and the lower pressure air, prior to introducing the mixture to a respective primary or secondary combustion zone of the combustor. The combustor provides improved fuel premixing and is fuel flexible, and reduces pressure drop requirements. The combustor is usable in a can, annular, or segmented annular combustor assembly.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: March 29, 2022
    Assignee: General Electric Company
    Inventor: Jonathan Dwight Berry
  • Patent number: 11280496
    Abstract: A gas turbine engine that includes a stage of guide vanes, a compressor downstream from the stage of guide vanes, and a combustor downstream from the compressor. The combustor includes a primary combustion zone and a secondary combustion zone downstream from the primary combustion zone. The primary combustion zone includes an exit configured to channel combustion gases towards the secondary combustion zone. A controller is communicatively coupled with the stage of guide vanes, the controller configured to monitor a temperature at the exit of the primary combustion zone, and selectively open and close the guide vanes to maintain the temperature within a predefined temperature range.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: March 22, 2022
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Robert Joseph Loeven, II, Haley Marie Boyd, Jason Dean Fuller
  • Patent number: 11280203
    Abstract: A gas turbine includes a plurality of first-stage stator vanes arranged in a circumferential direction, the first-stage stator vanes each including a vane surface having a pressure surface and a suction surface, a first combustor disposed on a suction surface side of one of the first-stage stator vanes, the first combustor having a first combustor outlet which includes a first side wall portion extending along a radial direction, and a second combustor disposed on a pressure surface side of the one of the first-stage stator vanes and adjacent to the first combustor in the circumferential direction. The one of the first-stage stator vanes satisfies 0.05??y/P?0.25, where ?y is a protruding amount of the suction surface from the inner wall surface of the first side wall portion to the circumferential direction, and P is an arrangement pitch of the first-stage stator vanes in the circumferential direction.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 22, 2022
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Tetsuya Shimmyo, Shunsuke Torii, Koichiro Iida, Hitoshi Kitagawa, Kenji Sato, Kentaro Tokuyama
  • Patent number: 11280495
    Abstract: A flow device for a combustor assembly defining a longitudinal axis around which the flow device is positioned is provided. The flow device includes a body extended around the longitudinal axis. The body includes a first wall and a second wall separated longitudinally from one another along the longitudinal axis. A fuel injector passage is defined through the body coaxial to the longitudinal axis. A plurality of vane walls is extended radially between the first wall and the second wall relative to the longitudinal axis. A radial flow passage is extended between the plurality of vane walls and the fuel injector passage.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: March 22, 2022
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Gurunath Gandikota, Steven Clayton Vise, Perumallu Vukanti, Mayank Krisna Amble, Clayton Stuart Cooper, Nicholas Ryan Overman, Karthikeyan Sampath, Allen Michael Danis, Craig Douglas Young
  • Patent number: 11280493
    Abstract: A fuel spray nozzle including a primary atomizer to discharge a flow of swirled atomised fuel along and around a fuel spray nozzle axis. The primary atomiser includes outer air swirler disposed radially outwardly of a fuel pre-filmer channel. A secondary atomiser disposed around the primary atomiser includes secondary inner air swirler to swirl flow along an inner air channel. The secondary inner air swirler disposed radially inwardly of a secondary fuel pre-filmer channel of the secondary atomiser. A primary outer air channel defined between the primary outer swirler and the secondary inner swirler. The secondary inner air swirler include splitter wall to separate swirling flow in the secondary inner channel from the primary flow of atomised fuel. The secondary inner air swirler includes primary cap wall integral with and extending radially inwardly from the splitter wall to direct flow from the primary outer channel inwardly towards the fuel spray.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: March 22, 2022
    Assignees: ROLLS-ROYCE plc, ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventors: Luca Tentorio, Juan Carlos Roman Casado, Giacomo Di Chiaro, Jonathan Knapton, Filippo Zambon, Radu Irimia, Imon-Kalyan Bagchi, James Robins, Tomasz Stankowski
  • Patent number: 11274832
    Abstract: The present invention is a downstream plate which is provided on a downstream side of an upstream plate includes an air inlet into which cooling air is introduced from a cooling air introduction pipe and a cooling flow path which extends in a direction along a surface of the downstream plate from the air inlet so as to avoid a premix tube and through which cooling air flows.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 15, 2022
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Katsuyoshi Tada, Keijiro Saito, Satoshi Tanimura, Kenta Taniguchi
  • Patent number: 11255544
    Abstract: A rotating detonation combustion (RDC) system is provided. The RDC includes a first outer wall and a second outer wall each extended around a centerline axis, and a detonation chamber formed radially inward of the second outer wall. A fuel passage extended between the first outer wall and the second outer wall, the fuel passage including a first inlet opening proximate to the aft end through which a flow of fuel is received into the fuel passage. The flow of fuel is provided through the fuel passage from the aft end to the forward end of the RDC system and to the detonation chamber.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: February 22, 2022
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Thomas Earl Dyson, Thomas Michael Lavertu, Sarah Marie Monahan, Kapil Kumar Singh, Venkat Eswarlu Tangirala, Joel Meier Haynes
  • Patent number: 11248789
    Abstract: A core engine article includes a combustor liner defining a combustion chamber therein and a turbine nozzle. The combustor liner includes a plurality of injector ports, and the plurality of injector ports have a shape that tapers to a corner on a forward side of the injector ports. The turbine nozzle includes a plurality of airfoils. The combustor liner and turbine nozzle are integral with one another. A method of making a core engine article is also disclosed.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: February 15, 2022
    Assignee: Raytheon Technologies Corporation
    Inventors: Lawrence Binek, Jesse R. Boyer, Dmytro Mykolayovych Voytovych
  • Patent number: 11248792
    Abstract: A combustor and a gas turbine including the same which can reduce a loss of pressure and enhance a cooling efficiency of a liner and transition piece are provided.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: February 15, 2022
    Inventors: Borys Shershnyov, Alexander Myatlev
  • Patent number: 11248560
    Abstract: Disclosed is a linkage assembly for a gas turbine engine having a link having a first end, a second end, and a rod extending therebetween, the first end having a first sliding bearing disposed within a first sliding bearing housing, a fastener comprising a first flange and a second flange, a pin extending between the first flange and the second flange, wherein the first sliding bearing is pivotally connected to the pin; and a biasing member secured between the first flange and the sliding bearing housing, the biasing member contacting the sliding bearing housing and biasing the link against rotation about a center axis for the rod of the link.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: February 15, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Alex J. Simpson, Robert T. Knowlton
  • Patent number: 11248797
    Abstract: An apparatus and method for mounting a combustion liner within a flow sleeve of a gas turbine combustion system is disclosed. A mounting system comprises a plurality of low-profile mounting tabs secured to a combustion liner where each of the mounting tabs are placed within slots of flow sleeve pegs when the combustion liner is installed in a flow sleeve. A plurality of liner stop brackets are removably secured to a flange of the flow sleeve and have an arm extending to be adjacent to a top contact surface of the mounting tabs. The mounting system reduces blockage to the surrounding airflow.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: February 15, 2022
    Assignee: Chromalloy Gas Turbine LLC
    Inventors: Daniel L. Folkers, Zhenhua Xiao, Vincent C. Martling, Adam L. Hart
  • Patent number: 11242806
    Abstract: A method is disclosed for controlling fuel injection in a reheat combustor of a gas turbine combustor assembly including a combustor casing defining a gas flow channel and a plurality of injection nozzles distributed in or around the gas flow channel; the method includes the step of distributing fuel among the injection nozzles according to a non-uniform distribution pattern.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: February 8, 2022
    Assignee: POWER SYSTEMS MFG., LLC
    Inventors: Mirko Ruben Bothien, Douglas Pennell, Peter Stuttaford
  • Patent number: 11242994
    Abstract: A combustion chamber for a turbomachine having a bottom wall, at least one mixing bowl for promoting the mixing of air and fuel, mounted in an opening in the bottom wall, at least one annular baffle mounted axially downstream of the bottom wall, with respect to the direction of the gas flow within the combustion chamber, around the opening. The baffle is produced in one piece with the mixing bowl so as to form a one-piece assembly that has at least one channel for the flow of cooling air. The channel has an air inlet located upstream of the bottom wall and an air outlet located downstream of the bottom wall. The air outlet is located radially opposite the baffle.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: February 8, 2022
    Assignee: Safran Aircraft Engines
    Inventors: Yvan Yoann Guezel, François Xavier Chapelle, Romain Nicolas Lunel