Fuel injector and fuel system for combustion engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-061/16
F02M-043/04
F23R-003/28
F23R-003/36
F23D-014/64
출원번호
US-0130058
(2016-04-15)
등록번호
US-10247155
(2019-04-02)
발명자
/ 주소
Patel, Rajeshriben
Srinivasan, Ram
Piper, James
Alvarez, Raymond
Paydar, Rasoul
출원인 / 주소
Solar Turbines Incorporated
대리인 / 주소
Mattingly Burke Cohen & Biederman
인용정보
피인용 횟수 :
0인용 특허 :
12
초록▼
A fuel injector for a combustion engine includes an injector head including a nozzle, a premixer, and a distributor structured to distribute a plurality of different fuels to different sets of fueling orifices in the premixer. A pilot assembly of the fuel injector is coupled to the premixer and incl
A fuel injector for a combustion engine includes an injector head including a nozzle, a premixer, and a distributor structured to distribute a plurality of different fuels to different sets of fueling orifices in the premixer. A pilot assembly of the fuel injector is coupled to the premixer and includes a first fueling passage for a first fuel and a second fueling passage for a second fuel. Multiple sets of fueling orifices are positioned within the fuel injector, the fueling orifice sets being selectively connectable to a plurality of different fuel supplies, and both located and sized so as to accommodate a wide range of flow rates to enable a combustion engine coupled with the fuel injector to operate on fuels having a range of Wobbe numbers and compositions.
대표청구항▼
1. A fuel injector for a combustion engine comprising: an injector body including an injector head having a nozzle structured to fluidly connect with a combustor in the combustion engine, a premixer coupled to the nozzle, and a pilot assembly;the premixer including therein a plurality of flow channe
1. A fuel injector for a combustion engine comprising: an injector body including an injector head having a nozzle structured to fluidly connect with a combustor in the combustion engine, a premixer coupled to the nozzle, and a pilot assembly;the premixer including therein a plurality of flow channels structured to receive inflowing air, a first set of fueling orifices defining a first fuel delivers pattern, and a second set of fueling orifices defining a second fuel delivery pattern, the first set of fueling orifices differing from the second set of fueling orifices in at least one of a total flow area or a pattern of distribution within the premixer;the first set of fueling orifices and the second set of fueling orifices each being in fluid communication with the flow channels, and each structured to fluidly connect with at least one of a plurality of different fuel supplies, such that the premixer provides a main flow containing a mixture of air and one of a plurality of different fuels, for delivery to the combustor; andthe pilot assembly including therein a plurality of fuel inlets each structured to fluidly connect with a different one of the plurality of different fuel supplies, an injection outlet fluidly connected with each of the plurality of fuel inlets, and an air inlet fluidly connected with the injection outlet, such that the pilot assembly provides a pilot flow containing a mixture of air and one of the plurality of different fuels, for delivery to the combustor. 2. The fuel injector of claim 1 wherein the pilot assembly defines a longitudinal axis and is positioned at least partially within the premixer, and the plurality of flow channels are arranged circumferentially about the longitudinal axis and radially outward of the pilot assembly. 3. The fuel injector of claim 1 further comprising a premix barrel, and wherein the pilot assembly includes a tube assembly positioned at least partially within the premix barrel and including an outer tube member and an inner tube member. 4. The fuel injector of claim 3 wherein the inner tube member defines a first fuel passage extending between a first one of the plurality of fuel inlets and the injection outlet, and a second fuel passage is formed between the inner tube member and the outer tube member and extends between a second one of the plurality of fuel inlets and the injection outlet. 5. The fuel injector of claim 3 wherein the tube assembly further includes a tip piece coupled to the outer tube member and supporting the tube assembly within the premix barrel, and a holder piece supporting the inner tube member within the outer tube member. 6. The fuel injector of claim 5 wherein a tip chamber is formed in part by the tip piece and in part by the inner tube member and is structured to feed the pilot flow to the injection outlet. 7. The fuel injector of claim 6 wherein an air feed conduit is formed between the premix barrel and the outer tube member. 8. The fuel injector of claim 7 wherein the tip piece has a plurality of air feed holes from the air feed conduit to the tip chamber formed therein, and the holder piece has a plurality of fuel feed holes from the second fuel passage to the tip chamber formed therein. 9. The fuel injector of claim 3 wherein the inner tube member, the outer tube member, and the premix barrel are arranged coaxially. 10. The fuel injector of claim 9 further comprising an injector stem including a plurality of fuel supply conduits coupled with the injector head. 11. A fuel system comprising: a plurality of different fuel supplies;a fuel injector structured to couple with a combustor in a combustion engine, and having an injector head that includes a main fueling assembly and a pilot fueling assembly;the main fueling assembly including a premixer having a base including a first set of fueling orifices, a vane including a second set of fueling orifices, and a plurality of flow channels structured to receive inflowing air, each of the first and the second set of fueling orifices being in fluid communication with the flow channels and each structured to fluidly connect with at least one of the plurality of different fuel supplies; andthe pilot fueling assembly including therein a plurality of fuel inlets each structured to fluidly connect with at least one of the plurality of different fuel supplies, an injection outlet fluidly connected with each of the plurality of fuel inlets, and an air inlet fluidly connected with the injection outlet. 12. The fuel system of claim 11 wherein the pilot assembly defines a longitudinal axis and is positioned at least partially within the premixer, and the plurality of flow channels are arranged circumferentially about the longitudinal axis and radially outward of the pilot assembly. 13. The fuel system of claim 12 wherein the pilot assembly includes a tube assembly having an inner tube member that defines a first fuel passage extending between a first one of the plurality of fuel inlets and the injection outlet, and an outer tube member, and a second fuel passage is formed between the inner tube member and the outer tube member and extends between a second one of the plurality of fuel inlets and the injection outlet. 14. The fuel system of claim 11 wherein the fuel injector includes a stem having a plurality of fuel supply conduits fluidly connecting the plurality of fuel supplies to the main fueling assembly and to the pilot fueling assembly. 15. The fuel system of claim 14 wherein a first one of the plurality of fuel supply conduits includes therein a first fuel passage structured to fluidly connect with a first one of the plurality of fuel supplies and a second fuel passage structured to fluidly connect with a second one of the plurality of fuel supplies. 16. The fuel system of claim 14 further comprising a distributor coupled with the premixer and forming a first fuel gallery fluidly connected with the first set of fueling orifices, and a second fuel gallery fluidly connected with the second set of fueling orifices. 17. The fuel system of claim 14 wherein the pilot assembly defines a longitudinal axis, and wherein the first set of fueling orifices feed the plurality of flow channels at radially outward locations and the second set of fueling orifices feed the plurality of flow channels at radially inward locations. 18. A pilot fueling and premixer assembly for a fuel injector comprising: a premixer including therein a plurality of flow channels structured to receive inflowing air, and a plurality of sets of fueling orifices in fluid communication with the flow channels, for providing a main flow of air and fuel to a combustor in a combustion engine;a pilot fueling assembly including therein a first fuel inlet structured to fluidly connect with a first fuel supply, a second fuel inlet structured to fluidly connect with a second fuel supply, and an injection outlet; anda distributor coupling the premixer to the pilot fueling assembly, the distributor forming a first fuel gallery in fluid communication with a first one of the plurality of sets of fueling orifices, and a second fuel gallery in fluid communication with a second one of the plurality of sets of fueling orifices; andthe pilot assembly further including therein a first fuel passage extending between a first one of the fuel inlets and the injection outlet, a second fuel passage extending between a second one of the fuel inlets and the injection outlet, and an air inlet fluidly connected with the injection outlet and structured to mix air with fuel from one of the first and the second fuel passages, for providing a pilot flow of air and fuel to the combustor. 19. The assembly of claim 18 wherein the pilot fueling assembly includes a tube assembly having an inner tube member and an outer tube member. 20. The assembly of claim 18 wherein the first fuel passage is defined by the inner tube member, and the second fuel passage is formed between the inner tube member and the outer tube member.
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이 특허에 인용된 특허 (12)
Butler Philip D,GBX, Combustion chamber and a method of operation thereof.
Hughes, Michael John; Berry, Jonathan Dwight; Stewart, Jason Thurman; Valeev, Almaz; Wu, Chunyang, Combustor with a lean pre-nozzle fuel injection system.
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