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公开(公告)号：US12123362B2
公开(公告)日：2024-10-22
申请号：US18225427
申请日：2023-07-24
申请人： ROLLS-ROYCE plc
CPC分类号： F02C9/40 , F02C9/28 , F23R3/343 , F05D2220/323 , F05D2270/08 , F05D2270/306 , F05D2270/31 , F05D2270/71
摘要： An aircraft has first and second fuel sources containing fuels with different characteristics, and one or more gas turbine engines powered by the fuels and each having a staged combustion system having pilot and main fuel injectors and being operable in pilot-only and pilot-and-main ranges of operation. The gas turbine engines each have a fuel delivery regulator arranged to control fuel delivery to the pilot and main fuel injectors. The method includes: obtaining a proposed mission description; obtaining nvPM impact parameters for the gas turbine engines, the impact parameters being associated with each operating condition of the proposed mission; calculating an optimised set of one or more fuel characteristics for each flight condition of the proposed flight defined in the flight description based on the nvPM impact parameters; and determining a fuel allocation based on the optimised set of one or more fuel characteristics.
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公开(公告)号：US11971171B2
公开(公告)日：2024-04-30
申请号：US17923588
申请日：2021-02-24
发明人： Christian Beck , Jürgen Meisl , Stefan Reich , Sabrina Isolde Siebelist , Christopher Grandt , Benjamin Witzel
摘要： A pilot cone for use in a burner arrangement having a pilot burner includes a casing which widens downstream along a burner axis and has a plurality of cooling air passages passing through it; an inner wall which extends upstream starting from the upstream end of the casing; an annular gap which runs along the inner wall on the radially outer side; and a plurality of cooling air openings which establish a connection between the annular gap and the cooling air passages. Another wall extends upstream at a distance from the inner wall starting from the casing and delimits the annular gap on the radially outer side, the inner wall having a plurality of holes.
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公开(公告)号：US11965466B2
公开(公告)日：2024-04-23
申请号：US17812333
申请日：2022-07-13
申请人： Woodward, Inc.
发明人： Bidhan Dam , Logan Oonk , Dan Huber , Vinay Prasad , Sudipa Sarker
摘要： The subject matter of this specification can be embodied in, among other things, a turbine combustor assembly includes a primary combustion chamber in fluid communication with a primary fuel injector and a primary air inlet, and an igniter carried by the primary combustion chamber and including a first igniter stage having an auxiliary combustion chamber housing comprising a mixing chamber and a tubular throat converging downstream of the mixing chamber, an ignition source projecting into the mixing chamber of the auxiliary combustion chamber, and a second igniter stage that includes an auxiliary fuel outlet manifold proximal to an outlet of the tubular throat.
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公开(公告)号：US11953206B2
公开(公告)日：2024-04-09
申请号：US17946254
申请日：2022-09-16
发明人： Mitsuhiro Karishuku , Satoshi Dodo , Yoshitaka Hirata , Tomohiro Asai , Shohei Yoshida , Yasuhiro Akiyama
CPC分类号： F23R3/343 , F02C7/222 , F23D11/101 , F23D14/02 , F23R3/283 , F05D2220/32 , F05D2240/35 , F23R2900/00001
摘要： Provided is a burner of double tube structure including an outer tube and an inner tube. The inner tube includes a tip-side support portion fixed on the outer tube, a base-side support portion fixed on the outer tube, a main body portion supported by the tip-side support portion, bellows interposed between the main body portion and the base-side support portion, and a bulkhead member attached at a position between the tip-side support portion and the base-side support portion. Between an outer peripheral surface of the bulkhead member and an inner peripheral surface of the outer tube, a second gap smaller than a first gap between an outermost peripheral surface of the bellows and the inner peripheral surface of the outer tube is interposed.
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公开(公告)号：US20240085025A1
公开(公告)日：2024-03-14
申请号：US18170932
申请日：2023-02-17
申请人： Bidhan Dam , Mowgli Crosby , Sudipa Sarker
发明人： Bidhan Dam , Mowgli Crosby , Sudipa Sarker
摘要： A multiphase fuel injector has an injector body with a fuel inlet at a first end and a fuel outlet at a second end opposite the first end. A primary circuit disposed proximate the fuel inlet extends into a central portion of the injector body. The primary circuit is configured to receive a first flow of pressurized fuel from the fuel inlet that discharges into a spin chamber in the injector body downstream from the fuel inlet. The primary circuit is configured to impart a swirling action to the first flow of pressurized fuel. A secondary circuit is located in the injector body radially outward from the primary circuit. The secondary circuit is configured to receive a second flow of pressurized fuel from the fuel inlet that discharges into the fuel outlet. The secondary circuit is configured to impart a swirling action to the second flow of pressurized fuel.
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公开(公告)号：US20240053014A1
公开(公告)日：2024-02-15
申请号：US18356416
申请日：2023-07-21
发明人： Carsten CLEMEN
CPC分类号： F23R3/343 , F23R3/283 , F23R2900/00018 , B33Y10/00
摘要： A pilot arrangement for a nozzle of a gas turbine, includes a cavity extending along a longitudinal axis for conducting fuel, the narrowest flow cross section of which is larger than a flow cross section of a pilot fuel nozzle, and the pilot fuel nozzle, which adjoins the cavity downstream and includes a pilot line and a pilot fuel outlet arranged downstream of the pilot line, the narrowest flow cross section of which is smaller than that of the cavity. A compact configuration is achieved in that the cavity is arranged in a central body arranged on the longitudinal axis, a swirling element is arranged in a circumferential manner around the central body, wherein the central body and the swirling element form a swirling arrangement, and the swirling element, the central body and the pilot fuel nozzle are configured as a continuous, integral component.
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公开(公告)号：US20240027069A1
公开(公告)日：2024-01-25
申请号：US17914694
申请日：2021-03-31
发明人： Shinichi Fukuba , Satoshi Takiguchi , Taiki Kinoshita , Kenta Taniguchi , Sosuke Nakamura , Yoshikazu Matsumura
摘要： A combustor for a gas turbine, includes: a first fuel nozzle group and a second fuel nozzle group each of which includes a fuel nozzle capable of supplying a fuel and has an independently controllable fuel supply system; a cylinder inside which a combustion region allowing a combustion gas produced by combustion of the fuel to flow is formed; and a first contraction portion extending partially along a circumferential direction so as to correspond to one of the first fuel nozzle group or the second fuel nozzle group and protruding radially inward from an inner peripheral surface of the cylinder.
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公开(公告)号：US20230408097A1
公开(公告)日：2023-12-21
申请号：US17980263
申请日：2022-11-03
发明人： Bryan KALB , Matthew YAQUINTO , Gene CHONG , David PARADES , James BRACKETT , Gregory VOGEL , Hany RIZKALLA , Bernard Tam Yen SAM , Ramesh KESHAVA-BHATTU , Fred HERNANDEZ , Joshua R. MCNALLY
摘要： An injector for a combustor of a gas turbine engine is provided with a plurality of air/fuel mixing tubes divided into radially outer and radially inner subsets of air/fuel mixing tubes with a first fuel manifold in fluid communication with the radially outer subset of air/fuel mixing tubes and a second fuel manifold in fluid communication with the radially inner subset of air/fuel mixing tubes. A blocker is provided at an outlet portion of each of the air/fuel mixing tubes of the radially outer subset of air/fuel mixing tubes and/or the radially inner subset of air/fuel mixing tubes to form a flame anchoring surface.
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公开(公告)号：US20230400186A1
公开(公告)日：2023-12-14
申请号：US18450633
申请日：2023-08-16
发明人： Hari Ravi Chandra , Arvind Kumar Rao , Shai Birmaher , Jayanth Sekar , Gurunath Gandikota , Michael A. Benjamin
CPC分类号： F23R3/343 , F23R3/286 , F02C7/222 , F23D14/70 , F23D14/64 , F23D2206/10 , F05D2240/35
摘要： A mixing assembly includes a pilot mixer and a main mixer. The main mixer includes a main housing, a fuel manifold positioned between a pilot housing and the main housing, a mixer foot extending outward from a forward end of the main housing, and a main swirler body including a plurality of vanes. The main swirler body surrounds the main housing and defines an annular mixing channel between the main housing and the main swirler body, and being coupled to the mixer foot. An annular main fuel ring extends axially aft from the mixer foot into the annular mixing channel. The mixer foot extends farther from the main housing than the main fuel ring. At least one of the mixer foot or the main fuel ring includes a plurality of fuel injection ports positioned to discharge fuel into a central portion of the annular mixing channel.
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10.发明公开公开(公告)号：US20230288069A1
公开(公告)日：2023-09-14
申请号：US18320682
申请日：2023-05-19
摘要： A mixer for blending fuel and air in a combustor of a turbine engine. The mixer includes a central body having a central passageway and a central axis. The mixer includes a plurality of tubes positioned radially around the central axis and circumferentially around a periphery of the mixer. Each of the tubes of the mixer includes opposed openings and a tangential opening. Each of the tubes of the mixer includes a cylindrical interior mixing passage configured to receive air flow from the opposed openings and the tangential opening and a fuel flow. The opposed openings are configured to spread the fuel flow laterally and the tangential opening is configured to spread the fuel flow tangentially.
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