[특허]Dual fuel mixer for gas turbine combustor

Dual fuel mixer for gas turbine combustor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-003/20 F23R-003/32
출원번호	US-0170969 (1993-12-21)
발명자 / 주소	Joshi Narendra D. (Cincinnati OH) Kress Eric J. (Loveland OH)
출원인 / 주소	General Electric Company (Cincinnati OH 02)
인용정보	피인용 횟수 : 91 인용 특허 : 0

초록 ▼

A dual fuel mixer is disclosed having a mixing duct, a shroud surrounding the upstream end of the mixing duct having contained therein a gas fuel manifold and a liquid fuel manifold in flow communication with a gas fuel supply and a liquid fuel supply, respectively, and control means, a set of inner and outer annular counter-rotating swirlers adjacent the upstream end of the mixing duct, where at least the outer annular swirlers include hollow vanes with internal cavities and gas fuel passages, all of which are in fluid communication with the gas fuel manifold to inject gas fuel into the air stream, the vane cavities also having liquid fuel passages therethrough in fluid communication with the liquid fuel manifold, and a hub separating the inner and outer annular swirlers to allow independent rotation thereof, the hub having a circumferential slot in fluid communication with the liquid fuel passages which injects liquid fuel into the air stream, wherein high pressure air from a compressor is injected into the mixing duct through the swirlers to form an intense shear region and gas fuel is injected into the air stream from the outer annular swirler vanes and/or liquid fuel is injected into the air stream from the hub slot.

대표청구항 ▼

An apparatus for premixing fuel and air prior to combustion in a gas turbine engine, comprising: (a) a linear mixing duct having a circular cross-section defined by a wall; (b) a shroud surrounding the upstream end of said mixing duct, said shroud having contained therein a gas fuel manifold and a liquid fuel manifold, each of said manifolds being in flow communication with a gas fuel supply and a liquid fuel supply, respectively, and control means; (c) a set of inner and outer annular counter-rotating swirlers adjacent the upstream end of said mixing duct for imparting swirl to an air stream, said outer annular swirlers including hollow vanes with internal cavities, wherein the internal cavities of said outer swirler vanes are in fluid communication with said gas fuel manifold, and said outer swirler vanes having a plurality of gas fuel passages therethrough in flow communication with said internal cavities to inject gas fuel into said air stream, and said outer swirler vanes further including liquid fuel passages therethrough in fluid communication with said liquid fuel manifold; and (d) a hub separating said inner and outer annular swirlers to allow independent rotation thereof, said hub having a circumferential slot in fluid communication with said liquid fuel passages to inject liquid fuel into said air stream; wherein high pressure air from a compressor is injected into said mixing duct through said swirlers to form an intense shear region, and gas fuel is injected into said mixing duct from said outer swirler vane passages and/or liquid fuel is injected into said mixing duct from said hub slot so that the high pressure air and the fuel is uniformly mixed therein, whereby minimal formation of pollutants is produced when the fuel/air mixture is exhausted out the downstream end of said mixing duct into the combustor and ignited.

이 특허를 인용한 특허 (91)

Rogers, Thomas J. C.; Twardochleb, Christopher Z.; Blust, James W.; Abreu, Mario E.; Cramb, Donald J., Acoustically tuned combustion for a gas turbine engine.
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Saito, Keijiro; Tanimura, Satoshi; Yuasa, Atsushi; Saito, Toshihiko, Combustor of gas turbine and combustion control method for gas turbine.
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Saitoh, Keijiro; Ohta, Masataka; Tanimura, Satoshi; Mandai, Shigemi, Combustor of gas turbine with concentric swirler vanes.
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Toronto, David Kaylor; Kim, Kwanwoo; Khan, Abdul Rafey; Flamand, Luis, Combustor with fuel staggering for flame holding mitigation.
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Dual fuel mixer for gas turbine combustor 원문보기

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Dual fuel mixer for gas turbine combustor 원문보기

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