[특허]Dual-fuel pre-mixing burner assembly

[미국특허] Dual-fuel pre-mixing burner assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F23R-003/36
출원번호	US-0043816 (1993-04-07)
발명자 / 주소	Washam Roy M. (Schenectady NY) Corr II Robert A. (Scotia NY)
출원인 / 주소	General Electric Company (Schenectady NY 02)
인용정보	피인용 횟수 : 19 인용 특허 : 0

초록 ▼

The burner assembly includes a flow body 12 having a central liquid fuel injection nozzle 14, inner and outer concentric passages 24 and 26, respectively, and a flow duct comprising a venturi downstream of the liquid injection nozzle. The inner passage 24 communicates air and gaseous fuel into the flow duct 16. Swirlers 30 and 38 are provided at the exit ends of the inner and outer passages, respectively, to create counterrotating flows which form a shear layer at the exit of the burner assembly body. The extent of the flow duct 16 facilitates liquid fuel atomization and vaporization, while affording sufficient time for gaseous fuel/air pre-mixing. The arrangement creates a recirculation zone 40 and a shear layer 42 at the exhaust of the burner assembly body which affords flame stabilization.

대표청구항 ▼

A dual-fuel pre-mixing burner assembly for a turbine, comprising: a burner assembly body having an inlet for flowing fuel and air in a generally downstream direction and having a liquid fuel nozzle disposed substantially centrally of and adjacent said inlet to said body for supplying liquid fuel for flow in the generally downstream direction; a flow duct, carried by said body and having an upstream converging section, a throat section and a downstream diverging section, for receiving fuel from central nozzle and air from said inlet; inner and outer generally concentric passages adjacent said body inlet for flowing air through said body; at least one gaseous fuel nozzle carried by said body and located to flow gaseous fuel through said duct in the generally downstream direction; said inner passage lying in communication with said flow duct to supply air thereto for pre-mixing, in said duct, air and fuel from at least one of said central liquid fuel nozzle and said gaseous fuel nozzle to form a lean air fuel mixture and for delivery of said pre-mixed air and fuel to a flow region downstream of said duct; an inner swirler in said inner passage for delivering to said duct air having a flow component in a first tangential direction such that the pre-mixed fuel and air delivered from said duct to said flow region has a flow component in said first tangential direction; said converging section of said duct and said pre-mixed fuel and air, exiting said converging section of said duct, comprising a means for establishing a centerline recirculation zone in said flow region therefore affording flame stabilization; and an outer swirler means in said outer passage for delivering to said flow region downstream of said duct air having a flow component in a second tangential direction generally opposite to said first tangential direction and for establishing, in combination with the flow having said first tangential component, a generally annular shear layer in said flow region, said centerline recirculation zone and said annular shear layer comprising a means for flame stabilization in said burner assembly.

이 특허를 인용한 특허 (19) 인용/피인용 타임라인 분석

Pandalai Raghavan P. (Cincinnati OH) Carter Bruce A. (West Chester OH) Hehmann Horst W. W. (Cincinnati OH), Acoustic damper for a gas turbine engine combustor.
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Wang, Yue; Yu, Zongming; Kong, Wenjun; Wang, Baorui; Ai, Yuhua, Air fuel premixer having arrayed mixing vanes for gas turbine combustor.
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Mandai Shigemi,JPX ; Nishida Koichi,JPX ; Ota Masataka,JPX ; Tanimura Satoshi,JPX ; Miyauchi Kotaro,JPX ; Inada Mitsuru,JPX ; Akamatsu Shinji,JPX ; Haruta Hideki,JPX, Combustor.
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Becker Bernard,DEX, Device for and method of burning a fuel in air.
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Razdan Mohan K. ; McLeroy Jacob T. ; Smith Duane A., Dry low emission combustor for gas turbine engines.
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Puri Rahul ; Razdan Mohan K. ; Smith Duane A. ; Stansel David M., Dry low oxides of nitrogen lean premix module for industrial gas turbine engines.
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Stephens, George; Spicer, David, Dual fuel gas-liquid burner.
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Lovett Jeffery Allan ; Goebel Steven George, Dynamically uncoupled low NOx combustor having multiple premixers with axial staging.
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Lovett Jeffery Allan ; Goebel Steven George, Dynamically uncoupled low nox combustor with axial fuel staging in premixers.
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Patel, Nayan Vinodbhai; Thomsen, Duane Douglas; McCarren, Michael John; Vandevoorde, Kevin, Fuel nozzle structure.
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Chyou, Yau-Pin; Shy, Shenqyang; Liu, Chien-Chia; Wu, Chih-Yang, Hydrogen-rich gas combustion device.
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Christian Oliver Paschereit CH; Jakob Keller CH, Method of preventing flow instabilities in a burner.
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De La Sovera, Jorge, Mixed fuel vacuum burner-reactor.
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Bors, Matthias, Plant and method for hot forming blanks.
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Dobbeling Klaus (Nussbaumen CHX), Premixing chamber for operating an internal combustion engine, a combustion chamber of a gas turbine group or a firing s.
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Ghoniem, Ahmed F.; LaBry, Zachary A.; Shanbhogue, Santosh J.; Speth, Raymond L., Swirl-counter-swirl microjets for thermoacoustic instability suppression.
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Fernandes, Luiz C. V.; Marquez, Elias; Washam, Roy Marshall, System and method for air-fuel mixing in gas turbines.
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Lacy, Benjamin Paul; Kraemer, Gilbert Otto; Varatharajan, Balachandar; Yilmaz, Ertan; Zuo, Baifang, Systems to facilitate reducing flashback/flame holding in combustion systems.
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Borkowicz Richard J. (Westminster MD) Davis ; Jr. L. Berkley (Schenectady NY) Kuwata Masayoshi (Ballston Lake NY), Tertiary fuel, injection system for use in a dry low NOx combustion system.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Dual-fuel pre-mixing burner assembly 원문보기