Fuel And Air Premixed Prior To Combustion Patents (Class 60/737)
  • Patent number: 10344981
    Abstract: A nozzle includes a nozzle body defining a longitudinal axis and including a primary distributor and a secondary distributor. The primary distributor has an inner air passage fed by a radial swirler; a first fuel circuit radially outboard from the inner air passage with respect to the longitudinal axis; a second fuel circuit radially outboard from the first fuel circuit with respect to the longitudinal axis, wherein each of the first fuel circuit and the second fuel circuit extends from a respective fuel circuit inlet to a respective annular fuel circuit outlet; and an outer air passage defined between a fuel circuit outer wall and an outer air passage wall, wherein the outer air passage is a converging non-swirling outer air passage. The secondary distributor similar to the primary distributor is downstream of the primary distributor with respect to the longitudinal axis.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 9, 2019
    Assignee: Delavan Inc.
    Inventors: Lev Alexander Prociw, Jason A. Ryon
  • Patent number: 10295187
    Abstract: A fuel nozzle for a gas turbine engine is disclosed which includes a nozzle body having a longitudinal axis, an elongated annular air passage defined within the nozzle body, and a plurality of circumferentially spaced apart axially extending swirl vanes disposed within the annular air passage, wherein each swirl vane has multiple joined leads and a variable thickness along the axial extent thereof.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: May 21, 2019
    Assignee: Rolls-Royce plc
    Inventors: Brandon P. Williams, Kevin E. Thompson, Robert R. Fogarty
  • Patent number: 10288293
    Abstract: A fuel nozzle apparatus has a centerline axis, and includes: a main fuel injector including an enclosed interior volume in fluid communication with a plurality of fuel ports configured to discharge fuel therefrom; a main fuel conduit disposed upstream of the main fuel injector and configured to supply liquid fuel to the interior volume; and a fluid lock disposed between the main fuel conduit and the main fuel injector, the fluid lock including a plurality of parallel capillary channels.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 14, 2019
    Assignee: General Electric Company
    Inventors: David Richard Barnhart, Joshua Tyler Mook
  • Patent number: 10281148
    Abstract: A biomass-mixed, pulverized coal-fired burner is provided. The biomass-mixed, pulverized coal-fired burner is capable of burning biomass fuel as auxiliary fuel in large quantities and burning only pulverized coal when the biomass fuel is not sufficiently available. The biomass-mixed, pulverized coal-fired burner includes: a biomass fuel jet nozzle that extends axially along the biomass-mixed, pulverized coal-fired burner; a pulverized coal fuel jet nozzle that surrounds the biomass fuel jet nozzle; a secondary air nozzle that surrounds the pulverized coal fuel jet nozzle; and a tertiary air nozzle that surrounds the secondary air nozzle. A biomass fuel stream is jetted into an inside of a pulverized coal fuel flame formed in a furnace, the flame offering favorable ignition and flame holding performance.
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: May 7, 2019
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Koji Taniguchi, Atsunori Kato, Suguru Yabara, Yutaka Tanabe
  • Patent number: 10267524
    Abstract: A turbine combustor assembly includes a fuel/air mixer assembly having a plurality of fuel/air mixer elements and a fuel injector coupled to the fuel/air mixer assembly. Each of the fuel/air mixer elements includes: a fuel/air mixer body having an internal cavity extending axially between an air inlet and an air outlet; and a prefilmer residing within an interior cavity of the fuel/air mixer body, the prefilmer including an axial inner air flow passage extending coaxially with an axial centerline of the internal cavity of the fuel/air mixer body and a radial fuel injection port into the air flow passage. The fuel injector is arranged to direct fuel into a plurality of the fuel/air mixer elements via the fuel injection port of the prefilmer of each fuel/air mixer element.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 23, 2019
    Assignee: Woodward, Inc.
    Inventor: Fei Philip Lee
  • Patent number: 10228141
    Abstract: An axial fuel staging (AFS) system for a combustor is provided. The AFS system includes a secondary fuel injector, an injector housing surrounding the secondary fuel injector, and a conduit assembly in flow communication with the secondary fuel injector. The conduit assembly includes a first conduit for conveying fuel to the secondary fuel injector, and a second conduit circumscribing the first conduit such that a channel is defined between the first conduit and the second conduit. The first conduit and the second conduit terminate within the injector housing.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: March 12, 2019
    Assignee: General Electric Company
    Inventors: David William Cihlar, Christopher Paul Willis, Marissa Ann Singley, Jonathan Glenn Reed
  • Patent number: 10215415
    Abstract: A fuel nozzle assembly includes a centerbody and a cartridge that extends axially through the centerbody. The cartridge defines a purge air passage within the centerbody. The cartridge includes a tip portion that is defined by a tip body. The tip body defines a throat portion and a mouth portion which is defined downstream from the throat portion. The tip body further defines a plurality of injection ports circumferentially spaced around the throat portion. The injection ports provide for fluid communication between the purge air passage and the throat portion of the tip body.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: February 26, 2019
    Assignee: General Electric Company
    Inventor: Jason Thurman Stewart
  • Patent number: 10184665
    Abstract: A fuel nozzle is provided for a gas turbine engine, and can include a pilot fuel injector having an axially-elongated, inner pilot centerbody wall and an outer pilot centerbody wall, with the axially-elongated, inner pilot centerbody wall extending from an upstream end to an annular fuel passage defining the downstream end of the pilot fuel injector. The fuel passage intersects with the inner pilot centerbody wall at a pilot fuel metering orifice. The fuel nozzle also includes a pilot fuel film surface downstream from the annular fuel passage and an annular splitter surrounding the pilot fuel injector. The annular splitter comprises, in axial sequence: an upstream section, a splitter throat having a diameter that is larger than a downstream diameter defined by the pilot fuel film surface, and a downstream diverging surface having an average diverging angle of about 24° to about 40° in relation to a centerline axis.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: January 22, 2019
    Assignee: General Electric Company
    Inventors: Michael Anthony Benjamin, Alfred Albert Mancini, Rameshkumar Muthuvel Chandrasekaran
  • Patent number: 10184666
    Abstract: A fuel nozzle including vortex generating features for use in a combustion turbine engine is provided. An array of inner pre-mixing conduits (20) extends between an inlet end (14) and an outlet end (16) of the nozzle. An array of outer pre-mixing conduits (22) may be disposed radially outwardly relative to the inner pre-mixing conduits (20). A fuel-directing tube (24) includes fuel-directing arms (26) structured to direct fuel flow into the outer pre-mixing conduits (22) to be mixed with a flow of air. The fuel-directing arms include a bluff structural arrangement (30) that may be disposed upstream of fuel injection locations (32, 32?) into the outer pre-mixing conduits (22). The proposed nozzle is believed to provide superior micro-mixing capability, such as by increasing the depth of penetration of jets of fuel in a cross-flow of air, and/or formation of vortices in a wake zone downstream from the vortex generating features.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: January 22, 2019
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Joseph Meadows, Christian Beck
  • Patent number: 10174658
    Abstract: A mixer for a vehicle exhaust system includes a mixer housing that defines an interior cavity for engine exhaust gases, and which includes a doser opening formed within a wall of the mixer housing. A cone has a cone inlet opening aligned with the doser opening and a cone outlet into the interior cavity. A cylindrical member surrounds at least a portion of the cone and includes at least one window opening. At least one diverter duct is fixed to the mixer housing and has a first duct end open to the interior cavity and a second duct end at least partially overlapping the at least one window opening such that a portion of the engine exhaust gases in the interior cavity is directed to enter the first duct end, flow through the at least one window and then flow into the cone inlet opening to be mixed with a fluid injected through the doser opening.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: January 8, 2019
    Assignee: Faurecia Emissions Control Technologies, USA, LLC
    Inventors: Philip M. Dimpelfeld, Eduardo Alano
  • Patent number: 10139110
    Abstract: A turbomachine combustion chamber, comprises a fuel injector nozzle and an injection system. The injection system comprises a sliding traverse, means for maintaining the sliding traverse and a supporting sole for the sliding traverse. The injection system comprises means for recalling the sliding traverse configured to stress the supporting sole against axial displacements of the sliding traverse relatively to the means for maintaining. The outer connection surface of the injector nozzle and/or at least one portion of the internal centring surface of the sliding traverse narrow in the downstream direction, in such a way as to retain the injector nozzle relatively to the sliding traverse axially in the downstream direction.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: November 27, 2018
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Brice Marie Yves Emile Le Pannerer, Jean-François Cabre, Galadriel Dancie
  • Patent number: 10125716
    Abstract: A control apparatus (100) controls a diesel engine (10). A glow plug (32) which can detect cylinder pressure is provided on the engine (10). An ECU (70) computes a parameter related to a change in cylinder pressure obtained from the glow plug (32). The ECU (70) controls fuel injection timing such that the parameter falls within a target range when combustion in the engine (10) is switched from premixed combustion to diffusion combustion.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: November 13, 2018
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Takafumi Tanaka, Tetsuhara Honma, Toshiyuki Nakamura, Manabu Okinaka
  • Patent number: 10125982
    Abstract: A burner device for a gas turbine with a burner body, wherein the burner body has an axial end face, a first supply channel having a first opening in the axial end face, and a burner end element arranged at the axial end face. The burner end element has a first plenum chamber coupled to the first opening of the first supply channel, such that a first fluid is feedable from the first supply channel to the first plenum chamber. The burner end element further has a lattice structure with a plurality of interconnected pores, wherein the first plenum chamber is coupled to the lattice structure for feeding the first fluid into the lattice structure. The lattice structure forms a part of a burner surface which points to a burning chamber of the gas turbine such that a fluid connection between the burning chamber and the lattice structure is formed.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: November 13, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventor: Andreas Graichen
  • Patent number: 10094568
    Abstract: A combustor includes a plurality of bundled tube fuel nozzles which are annularly arranged around a common axial centerline. The plurality of bundled tube fuel nozzles comprise a first bundled tube fuel nozzle and a second bundled tube fuel nozzle. The first bundled tube fuel nozzle includes a first fuel plenum and a plurality of premix tubes which extend axially therethrough. The second bundled tube fuel nozzle includes a second fuel plenum and a plurality of premix tubes which extend axially therethrough. The first fuel plenum is axially offset at a predefined axial distance from the second fuel plenum so as to mitigate combustion tones within the combustor. In one embodiment, premix tube fuel ports disposed within the first and/or second fuel plenums may be axially offset with respect to each other within the corresponding fuel plenums at a predefined axial distance to mitigate combustion tones within the combustor.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: October 9, 2018
    Assignee: General Electric Company
    Inventor: Sven Georg Bethke
  • Patent number: 10094560
    Abstract: A system for waste processing includes a feeder for receiving a waste stream of carbonaceous materials, multiple independently controllable augers, a reactor and an incinerator. The reactor receives a waste stream from the feeder and using a controllable heating element assembly converts the carbonaceous materials in the waste stream to syngas. The incinerator uses the syngas from the reactor to incinerate separately received black water waste from a storage tank.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: October 9, 2018
    Assignees: Leidos, Inc., Defense Life Sciences, Inc.
    Inventors: Geoffrey Louis Doyle, Jerry B. Warner, Kunihiro Nakamoto
  • Patent number: 10094565
    Abstract: A gas turbine combustor and a gas turbine include a pilot burner, a plurality of main burners, and a flame stabilizer. A first air ejection portion is adapted to eject first air toward a tip end portion side between the main burners and the flame stabilizer, a second air ejection portion is adapted to circulate second air toward a tip end portion side outside the flame stabilizer and eject the second air toward a radially outward direction, and a change member is adapted to change an ejecting direction of the second air ejected through the second air ejection portion to an axial center direction of the flame stabilizer.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: October 9, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yusuke Tanaka, Satoshi Takiguchi, Keijiro Saito, Shinji Akamatsu
  • Patent number: 10054314
    Abstract: An axial fuel staging injector for a gas turbine includes a body. The body includes an upstream end and a downstream end. The body defines a primary compressed air flow path through which compressed air flows from a compressed air source to a transition duct of a gas turbine combustor. The body includes a plurality of outlets disposed on an interior surface thereof. Each outlet of the plurality of outlets includes a secondary fuel conduit in fluid communication with a secondary fuel source, and includes a first wall that defines a secondary fuel path. The secondary compressed air conduit is in fluid communication with a compressed air source, and includes a second wall disposed about the first wall in a substantially coannular arrangement, wherein the first wall and the second wall define a secondary compressed air flow path.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 21, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Sravan Kumar Dheeraj Kapilavai, Wei Zhao, Shivakumar Srinivasan
  • Patent number: 10041681
    Abstract: The present application provides a combustor for use with a gas turbine engine. The combustor may include a primary stage nozzle in communication with a linear actuator and a number of stationary secondary nozzles surrounding the primary stage nozzle in whole or in part. The linear actuator varies the position of the primary stage nozzle with respect to the stationary secondary nozzles.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: August 7, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Joseph Vincent Citeno, Thomas Edward Johnson
  • Patent number: 10041680
    Abstract: A gas turbine combustor of the present invention includes a cylindrical combustor liner, a cylindrical combustion chamber inside the combustor liner, and a burner that includes a plurality of fuel nozzles for injecting the gas fuel into the combustion chamber and an air hole plate with a plurality of air holes for guiding the compressed air into the combustion chamber. The air hole plate joins the combustor liner and is disposed between the fuel nozzles and the combustion chamber. The junction between the air hole plate and the combustor liner is provided with an inclined component which covers the junction and has a connecting surface connecting the air hole plate and the combustor liner.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: August 7, 2018
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Tomohiro Asai, Akinori Hayashi, Yasuhiro Akiyama
  • Patent number: 10024540
    Abstract: A combustion chamber for a gas turbine is provided. The combustion chamber comprises at least one first and one second jet carrier, of which at least one is provided for injecting an operating gas in the combustion chamber such that waste gas formed in the flame zone thereof is circulated to a mixing zone of the first jet carrier. In order to achieve a compact combustion chamber, the jet carriers are positioned in relation to each other such that waste gas from the flame zone of the first jet carrier flows directly to the mixing zone of the second jet carrier.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: July 17, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Peter Kaufmann, Werner Krebs
  • Patent number: 9982892
    Abstract: A fuel nozzle assembly includes a center body having a pilot air passage and a pilot fuel passage defined therein. A pilot nozzle having a plurality of premix passages is disposed within a downstream end portion of the center body. Each premix passage includes an inlet that is in fluid communication with the pilot air passage, an outlet that is positioned axially downstream from the inlet and a fuel port that is in fluid communication with the pilot fuel passage. An outer sleeve is coaxially aligned with and radially spaced from the center body so as to define an annular passage therebetween. A strut extends radially outwardly from the center body to the outer sleeve. The fuel nozzle assembly further includes an inlet passage that is in fluid communication with the pilot air passage. The inlet passage extends through the outer sleeve, the strut and the center body.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: May 29, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bryan Wesley Romig, Dereck Joseph Ouellet, Jason Thurman Stewart, Michael Christopher Gibson
  • Patent number: 9976744
    Abstract: A reheat burner arrangement including a center body, an annular duct with a cross-section area, an intermediate fuel injection plane located along the center body and being actively connected to the cross section area of the annular duct, wherein the center body is located upstream of a combustion chamber, wherein the structure of the reheat burner arrangement is defined by various parameters and the structure of the reheat burner arrangement is defined by various dependencies.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: May 22, 2018
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: John Philip Wood, Andrea Ciani, Andre Theuer, Douglas Anthony Pennell, Ewald Freitag
  • Patent number: 9964308
    Abstract: A combustor cap assembly includes an impingement plate coupled to an annular shroud and a cap plate which is coupled to the impingement plate to form an impingement air plenum therebetween. The combustor cap assembly further includes a flow conditioning plate coupled to a forward end portion of the shroud. The flow conditioning plate includes an inner band portion, an outer band portion and an annular portion. The annular portion defines a plurality of flow conditioning passages. The inner band portion at least partially defines a cooling air plenum within the combustor cap assembly. The inner band portion defines an exhaust channel which is in fluid communication with the impingement air plenum and an exhaust outlet. The flow conditioning plate further defines a cooling air passage which provides for cooling air flow into the cooling air plenum.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: May 8, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Carolyn Ashley Antoniono, Jonathan Hale Kegley, Lucas John Stoia, Patrick Benedict Melton, William Francis Carnell, Jr.
  • Patent number: 9951956
    Abstract: A fuel nozzle assembly includes a premix chamber, an air flow divider extending radially and axially within the premix chamber between an inner wall and an outer wall and a plurality of guide vanes disposed within the premix chamber. One or more of the guide vanes includes a fuel port in fluid communication with the flow divider. The fuel nozzle assembly further includes a premix plate that extends radially between the inner and outer walls and circumferentially between first and second side walls downstream from the fuel ports. The premix plate includes an upstream side axially spaced from a downstream side and a plurality of passages that provide for fluid flow from the premix chamber through the premix plate.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: April 24, 2018
    Assignee: General Electric Company
    Inventor: Almaz Kamilevich Valeev
  • Patent number: 9938903
    Abstract: A gas turbine including a working fluid flowpath extending aftward from a forward injector in a combustor. The combustor may include an inner radial wall, an outer radial wall, and, therebetween, a flow annulus, and a third radial wall formed about the outer radial wall that forms an outer flow annulus. A staged injector may intersect the flow annulus so to attain an injection point within the working fluid flowpath by which aftward and forward annulus sections are defined. Air directing structure may include an aftward intake section corresponding to the aftward annulus section and a forward intake section corresponding to the forward annulus section. The air directing structure may include a switchback coolant flowpath to direct air from the compressor discharge cavity to the staged injector. The switchback coolant flowpath may include an upstream section through the flow annulus, and a downstream section through the outer flow annulus.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 10, 2018
    Assignee: General Electric Company
    Inventors: Michael John Hughes, Jonathan Dwight Berry
  • Patent number: 9939156
    Abstract: A combustor arrangement (10) including: a pilot burner (22) having a pilot cone (62); a plurality of clockwise (130) main swirlers interposed among a plurality of counterclockwise (132) main swirlers and disposed concentrically about the pilot burner; and a base plate (40) transverse to the main swirlers. Inbound-zones (134) exist where adjacent portions (106) of adjacent flows (108) through main swirlers flow toward the pilot cone, and interposed between the inbound zones outbound zones (136) exist where adjacent portions of adjacent flows flow away from the pilot cone. The arrangement is configured to preferentially deliver more cooling fluid to the inbound zones than the outbound zones.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: April 10, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Krishna C. Miduturi, David M. Ritland
  • Patent number: 9933162
    Abstract: A combustor includes: a pilot burner; a plurality of main burners, each of which is provided radially and outwardly along a circumferential direction about the pilot burner, and including a main nozzle disposed in a main burner cylinder; and an extension tube provided to extend toward a downstream side from the main burner cylinder of each of the main burners. The extension tube has a circular inlet communicating with the main burner cylinder, and an outlet at the downstream side comprising two radial edges parallel to the radial direction and two circumferential edges formed along the circumferential direction so as to connect both ends of the radial edges. The combustor further includes an air passage formed outside of the main burner cylinder; and an inner communication hole (formed at the side of the inlet of the extension tube and at a position corresponding to the radially and inwardly circumferential edge for allowing communication between the air passage and the inside of the extension tube.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: April 3, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kei Inoue, Keijiro Saito, Hikaru Katano, Sosuke Nakamura, Mitsunori Isono, Atsushi Yuasa
  • Patent number: 9926845
    Abstract: A combustor according to the invention includes a combustor basket to which air A is supplied from the outside, a plurality of first nozzles that are annularly provided along the inner periphery of the combustor basket and that supply premixed gas M of the air and fuel to the inside of the combustor basket, and a transition piece in which the combustor basket is connected to a base end thereof and which burns the premixed gas supplied from the first nozzles, thereby forming a flame front spread to the outer periphery side toward the leading end in an axial direction, wherein each first nozzle supplies the premixed gas with fuel concentration changed around the center axis of the first nozzle such that the flame front has a uniform temperature in the axial direction.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: March 27, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Sosuke Nakamura, Yoshikazu Matsumura, Hikaru Katano, Kenta Taniguchi, Hiroyuki Yamasaki
  • Patent number: 9863637
    Abstract: Provided is a combustor that is made compact and achieves NOx reduction.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: January 9, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Takiguchi, Atsushi Yuasa, Satoshi Tanimura
  • Patent number: 9840992
    Abstract: A fuel injector for an engine includes a connection to a fuel source, a nozzle which provides an outlet from the fuel injector, a fuel path from the fuel source to the nozzle, a valve between the fuel path and the nozzle, and a gas injection mechanism configured to insert a gas core into the fuel.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: December 12, 2017
    Assignee: Elwha LLC
    Inventors: William D. Duncan, Roderick A. Hyde, Lowell L. Wood, Jr.
  • Patent number: 9835335
    Abstract: A combustion chamber for a gas turbine is provided. The combustion chamber has a pilot burner device, a fuel injector, an ignitor unit and an air blast injector. The pilot burner device has a pilot body with a pilot surface facing an inner volume of the combustion chamber. The fuel injector has a fuel outlet for injecting a fuel into the inner volume, wherein the fuel outlet is arranged at the pilot surface. The ignitor unit is arranged at the pilot surface such that fuel which passes the ignitor unit is ignitable. The air blast injector is adapted for injecting an air blast into the inner volume, wherein the air blast injector includes an air blast outlet arranged at the pilot surface such that the air blast is injectable in the direction to the fuel outlet and the ignitor unit for directing the fuel to the ignitor unit.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: December 5, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Timothy Dolmansley
  • Patent number: 9816707
    Abstract: A combustion chamber for a gas turbine is provided. The combustion chamber has a pilot burner device, a fuel injector and an ignitor unit. The pilot burner device has a pilot body with a pilot surface which is facing an inner volume of the combustion chamber. The fuel injector has a fuel outlet for injecting a fuel into the inner volume. The ignitor unit is adapted for igniting the fuel inside the inner volume, wherein the ignitor unit is arranged at the pilot surface such that fuel which passes the ignitor unit is ignitable. The pilot body includes a recess, wherein the fuel outlet is arranged within the recess.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: November 14, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Timothy Dolmansley
  • Patent number: 9803864
    Abstract: A turbine combustor section has a flow conditioner including a plurality of conduits arranged to convey pressurized air to an air chamber for entrance into a plurality of fuel nozzles. Each conduit includes an inlet configured to receive the pressurized air from an annular passage and an outlet configured to deliver the pressurized air to the air chamber. A cross-sectional area of each conduit varies between the inlet and the outlet so as to reduce a pressure drop across the flow conditioner.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: October 31, 2017
    Assignee: General Electric Company
    Inventors: Arjun Singh, Chandrasekhar Pushkaran, Nishant Govindbhai Parsania
  • Patent number: 9784451
    Abstract: A combustor basket assembly for a gas turbine engine that includes a combustor basket having a basket liner including an input end and an output end. A double-wall exit cone is mounted to the output end of the basket liner, where the exit cone includes an inner wall and an outer wall defining an exit cone channel therebetween. A splash plate is mounted to the outer wall to define a splash plate channel between the splash plate and the basket liner. A series of pairs of cooling feed holes are provided through the basket liner, where one of the feed holes in each pair provides cooling air to the cone channel and the other feed hole provides cooling air to the splash plate channel. The outer surface of the outer wall and the inner surface of the inner wall are coated with a thermal barrier coating.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 10, 2017
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Richard L. Thackway, Charalambos Polyzopoulos
  • Patent number: 9777923
    Abstract: Clean combustion and equilibration equipment and methods are provided to progressively deliver, combust and equilibrate mixture of fuel, oxidant and aqueous diluent in a plurality of combustion regions and in one or more equilibration regions to further progress oxidation of products of incomplete combustion, in a manner that sustains combustion while controlling temperatures and residence times sufficiently to reduce CO and NOx emissions to below 25 ppmvd, and preferably to below 3 ppmvd at 15% O2.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: October 3, 2017
    Assignee: VAST HOLDINGS, LLC
    Inventors: Paul Andrew Campbell, David L. Hagen
  • Patent number: 9765971
    Abstract: A gas turbine combustor having a burner including a plurality of fuel nozzles for injecting fuel, air hole plates positioned on a downstream side of the fuel nozzles and a plurality of air holes arranged in pairs with each of the fuel nozzles, and a combustion chamber for mixing fuel injected from the fuel nozzles and air injected from the air holes and injecting and burning the mixed fuel. Each of the fuel nozzles configuring the burners is provided with a projection in which a part of an outer edge of a section of the fuel nozzle is protruded outward; and the projection is arranged so as to be directed toward a center of the gas turbine combustor. The projection of the fuel nozzle is positioned on a downstream side of a flow of combustion air flowing around each of the fuel nozzles.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: September 19, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yoshinori Matsubara, Keisuke Miura
  • Patent number: 9759425
    Abstract: A system includes a multi-tube fuel nozzle. The multi-tube fuel nozzle includes multiple fuel injectors. Each fuel injector is configured to extend into a respective premixing tube of a plurality of mixing tubes. Each fuel injector includes a body, a fuel passage, and multiple fuel ports. The fuel passage is disposed within the body and extends in a longitudinal direction within a portion of the body. The multiple fuel ports are disposed along the portion of the body and coupled to the fuel passage. A space is disposed between the portion of the body with the fuel ports and the respective premixing tube.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 12, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: James Harold Westmoreland, Ronald James Chila, Gregory Allen Boardman, Patrick Benedict Melton
  • Patent number: 9746185
    Abstract: An annular fluid distribution device (20) for distributing fluid into a gaseous flow (14), that includes: a first fluid distribution manifold (30) having a first fluid inlet and first fluid outlets (24), wherein the first fluid outlets inject a first fluid into the gaseous flow; and a second fluid distribution manifold (32), having a second fluid inlet and second fluid outlets (26), wherein the second fluid outlets inject a second fluid into the gaseous flow. The second fluid manifold is isolated from the first fluid distribution manifold, and the first fluid outlets and the second fluid outlets are disposed on a common fluid outlet plane (43).
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: August 29, 2017
    Assignee: SIEMENS ENERGY, INC.
    Inventors: David M. Ritland, Timothy A. Fox
  • Patent number: 9719419
    Abstract: A gas turbine combustor includes: an external cylinder (31); an inner cylinder (32) provided inside the external cylinder (31) to form an air passage (30) between the external cylinder (31) and the inner cylinder (32); a pilot nozzle (35) provided in a center part of the inner cylinder (32) along a direction of a combustor axis (S); a plurality of main nozzles (36) provided on an inner peripheral surface of the inner cylinder (32) along a circumferential direction thereof so as to surround the pilot nozzle (35), the plurality of main nozzles (36) premixing fuel with combustion air introduced to the air passage (30) and ejecting the fuel into the inner cylinder (32); and a top hat nozzle (41) provided inside the air passage (30) across a circumferential direction to mix fuel with the combustion air prior to reaching the plurality of main nozzles (36).
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: August 1, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoshi Sometani, Satoshi Takiguchi, Shigemi Mandai
  • Patent number: 9670846
    Abstract: The present application provides a fuel nozzle for use with a flow of air and a flow of fuel in a gas turbine engine. The fuel nozzle may include a plenum, a mixing tube element positioned within the plenum, and an enhanced mixing feature positioned within the mixing tube element so as to promote mixing of the flow of air and the flow of fuel. The enhanced mixing feature may include a turbulated mixing zone.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: June 6, 2017
    Assignee: General Electric Company
    Inventors: Yon Han Chong, Dereck Joseph Ouellet
  • Patent number: 9664392
    Abstract: A bundled tube fuel injector includes an outer band that circumferentially surrounds a fuel plenum defined within the bundled tube fuel injector. The outer band includes a forward end portion that is axially separated from an aft end portion. A plurality of pre-mix tubes extends through the fuel plenum substantially parallel to one another. A first segment of the plurality of pre-mix tubes is circumferentially surrounded by the outer band. An outer shroud extends circumferentially around a second segment of the pre-mix tubes. The outer shroud includes a forward portion and an aft portion. The aft end portion of the outer band is coupled to the forward portion of the outer shroud via a plurality of fasteners for enhanced assembly and reparability.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: May 30, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Mark Carmine Bellino, James Christopher Monaghan, Johnie F. McConnaughhay, Steven Charles Woods
  • Patent number: 9650958
    Abstract: A combustor cap for a combustor chamber of a combustion system is provided. The combustor cap includes a plate member including: a plurality of openings for accommodating a plurality of fuel nozzles of the combustion system; a cooling passage extending through a plane of the plate member; an entrance opening to the cooling passage; and an exit opening from the cooling passage to a side of the plate member opposite to the combustion chamber.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: May 16, 2017
    Assignee: General Electric Company
    Inventors: Richard Martin DiCintio, Patrick Benedict Melton
  • Patent number: 9631816
    Abstract: A bundled tube fuel nozzle includes a fuel distribution body. The fuel distribution body includes a substantially flat aft wall having an inner surface axially spaced from an outer surface, a fuel stem collar axially spaced from the inner surface of the aft wall and a contoured forward wall that extends between the fuel stem collar and the aft wall. The contoured forward wall and the aft wall define a fuel plenum within the fuel distribution body. The bundled tube fuel nozzle further includes a plurality of injector tubes that are in fluid communication with the fuel plenum. Each injector tube extends from the contoured forward wall to the aft wall within the fuel distribution body and defines a premix passage through the contoured forward, the fuel plenum and the aft wall.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: April 25, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Kassy Moy Lum, David William Cihlar
  • Patent number: 9587564
    Abstract: A mixture of air and fuel is received into a reaction chamber of a gas turbine system. The fuel is oxidized in the reaction chamber, and a maximum temperature of the mixture in the reaction chamber is controlled to be substantially at or below an inlet temperature of a turbine of the gas turbine system. The oxidation of the fuel is initiated by raising the temperature of the mixture to or above an auto-ignition temperature of the fuel. In some cases, the reaction chamber may be provided without a fuel oxidation catalyst material.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: March 7, 2017
    Assignee: ENER-CORE POWER, INC.
    Inventor: Edan Prabhu
  • Patent number: 9557050
    Abstract: A nozzle for assemblies and gas turbines is provided. The nozzle exhibits destabilized flame holding characteristics, i.e., the nozzle is unable to stabilize flame up to an equivalence ratio of about 0.65. As a result, flame heat release is delayed resulting in lower peak flame temperatures and correspondingly lower NOx levels. Flame stabilization capability is retained for higher equivalence ratios to support operation of the combustor in other regions of the load range.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: January 31, 2017
    Assignee: General Electric Company
    Inventors: Christian Lee Vandervort, Joel Meier Haynes
  • Patent number: 9551492
    Abstract: A gas turbine engine system includes a compressor, a combustor, and a turbine. The combustor is coupled to the compressor and disposed downstream of the compressor. The combustor includes a secondary combustor section coupled to a primary combustor section and disposed downstream of the primary combustor section. The combustor also includes a transition nozzle coupled to the secondary combustor section and disposed downstream of the secondary combustor section. The combustor further includes an injector coupled to the secondary combustor section, for injecting an air-fuel mixture to the secondary combustor section. The turbine is coupled to the combustor and disposed downstream of the transition nozzle; wherein the transition nozzle is oriented substantially tangential to the turbine.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: January 24, 2017
    Assignee: General Electric Company
    Inventors: Joel Meier Haynes, Narendra Digamber Joshi, Huijuan Chen
  • Patent number: 9534790
    Abstract: A fuel injector for a combustor generally includes an annular outer body having an inlet and an outlet. The outer body at least partially defines an outer flow passage. An inner flow passage extends at least partially through the outer flow passage and a radial swirler is disposed at the inlet of the outer body. The radial swirler includes a first radial passage separated from a second radial passage. The first radial passage has a first plurality of swirler vanes and the second radial passage has a second plurality of swirler vanes. The first radial passage is in fluid communication with the outer flow passage and the second radial passage is in fluid communication with the inner flow passage.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: January 3, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jun Cai, Gregory Allen Boardman, Hasan Karim, Lucas John Stoia
  • Patent number: 9534787
    Abstract: A system includes a combustor cap assembly for a multi-tube fuel nozzle. The combustor cap assembly includes a support structure defining an interior volume configured to receive an air flow, a plurality of mixing tubes disposed within the interior volume, wherein each of the plurality of mixing tubes comprises a respective fuel injector and is individually removable from the combustor cap assembly, an air distributor disposed within the interior volume and configured to distribute the air flow received by the interior volume to each of the plurality of mixing tubes, and a combustor cap removably coupled to the support structure.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: January 3, 2017
    Assignee: General Electric Company
    Inventors: James Harold Westmoreland, Gregory Allen Boardman, Patrick Benedict Melton
  • Patent number: 9534781
    Abstract: A system includes a multi-tube fuel nozzle with a fuel nozzle body and a plurality of tubes. The fuel nozzle body includes a nozzle wall surrounding a chamber. The plurality of tubes extend through the chamber, wherein each tube of the plurality of tubes includes an air intake portion, a fuel intake portion, and an air-fuel mixture outlet portion. The multi-tube fuel nozzle also includes a differential configuration of the air intake portions among the plurality of tubes.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: January 3, 2017
    Assignee: General Electric Company
    Inventors: Michael John Hughes, Thomas Edward Johnson, Jonathan Dwight Berry, William David York
  • Patent number: 9528704
    Abstract: A system includes a a combustor cap configured to be coupled to a plurality of mixing tubes of a multi-tube fuel nozzle, wherein each mixing tube of the plurality of mixing tubes is configured to mix air and fuel to form an air-fuel mixture. The combustor cap includes multiple nozzles integrated within the combustor cap. Each nozzle of the multiple nozzles is coupled to a respective mixing tube of the multiple mixing tubes. In addition, each nozzle of the multiple nozzles includes a first end and a second end. The first end is coupled to the respective mixing tube of the multiple mixing tubes. The second end defines a non-round outlet for the air-fuel mixture. Each nozzle of the multiple nozzles includes an inner surface having first and second portions, the first portion radially diverges along an axial direction from the first end to the second end, and the second portion radially converges along the axial direction from the first end to the second end.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: December 27, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Michael John Hughes, Gregory Allen Boardman, Johnie Franklin McConnaughhay, Carlo Antonio Arguinzoni