[특허]Fuel nozzle passive purge cap flow

Fuel nozzle passive purge cap flow 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-001/00 F02G-003/00 F23R-003/28
출원번호	US-0985010 (2011-01-05)
등록번호	US-8991188 (2015-03-31)
발명자 / 주소	Bailey, Donald Mark Rohrssen, Robert
출원인 / 주소	General Electric Company
대리인 / 주소	Nixon & Vanderhye P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 31

초록 ▼

A cooling circuit for a fuel nozzle in a gas turbine includes an end cap cavity receiving passive purge flow from a compressor of the turbine, and fuel nozzle swozzles disposed in a swozzle shroud that impart swirl to incoming fuel and air. Purge slots are formed in the swozzle shroud and through the fuel nozzle swozzles in fluid communication with the end cap cavity. The purge slots are positioned upstream of a quat fuel injection passage, and the passive purge flow enters fuel nozzle tip cavities of the fuel nozzle to provide tip cooling and tip purge volume without mixing the passive purge flow with quat fuel.

대표청구항 ▼

1. A cooling circuit for a fuel nozzle in a gas turbine, comprising: an annulus receiving compressor discharge air;a quat cap including a fuel passage through which quat fuel is injected toward the fuel nozzle;an air passage formed in the quat cap and receiving the compressor discharge air from the annulus, wherein the air passage is positioned upstream of and is separate from the fuel passage such that the compressor discharge air is not mixed with quat fuel; andpurge passages in the fuel nozzle receiving the compressor discharge air from the air passage,wherein the purge passages are configured to direct the compressor discharge air to the fuel nozzle for tip cooling. 2. A cooling circuit according to claim 1, wherein the fuel nozzle comprises a swozzle that imparts swirl to incoming fuel and air, and wherein the purge passages are formed in the swozzle. 3. A cooling circuit according to claim 2, wherein the purge passages comprise slots formed in the swozzle. 4. A cooling circuit according to claim 1, wherein the fuel nozzle is a center fuel nozzle. 5. A cooling circuit according to claim 1, wherein the gas turbine includes a plurality of outer fuel nozzles surrounding a center fuel nozzle, and wherein the cooling circuit directs the compressor discharge air to the outer fuel nozzles and the center fuel nozzle. 6. A cooling circuit according to claim 1, further comprising a nozzle tip cooling passage surrounding the fuel nozzle, wherein a portion of the compressor discharge air from the air passage is directed to the nozzle tip cooling passage for cooling the nozzle tip. 7. A cooling circuit according to claim 1, wherein the purge passages comprise slots formed in the fuel nozzle. 8. A method of cooling a fuel nozzle in a gas turbine, the method comprising: (a) receiving compressor discharge air in an annulus;(b) directing the compressor discharge air from the annulus to an air passage formed in a quat cap, wherein the air passage is positioned upstream of and is separate from a quat fuel passage such that the compressor discharge air in the air passage is not mixed with quat fuel; and(c) receiving the compressor discharge air from the air passage in purge passages in the fuel nozzle, the purge passages directing the compressor discharge air to the fuel nozzle for tip cooling. 9. A method according to claim 8, wherein the fuel nozzle comprises a swozzle that imparts swirl to incoming fuel and air, and wherein the method comprises forming the purge passages in the swozzle. 10. A method according to claim 8, wherein the fuel nozzle further comprises a nozzle tip cooling passage surrounding the fuel nozzle, wherein the method comprises directing a portion of the compressor discharge air from the air passage to the nozzle tip cooling passage for cooling the nozzle tip. 11. A cooling circuit for a fuel nozzle in a gas turbine, comprising: an end cap cavity receiving passive purge flow from a compressor of the turbine;fuel nozzle swozzles disposed in a swozzle shroud that impart swirl to incoming fuel and air; andpurge slots formed in the swozzle shroud and through the fuel nozzle swozzles in fluid communication with the end cap cavity, wherein the purge slots are positioned upstream of and are separate from a quat fuel injection passage, and wherein the passive purge flow enters fuel nozzle tip cavities of the fuel nozzle to provide tip cooling and tip purge volume without mixing the passive purge flow with quat fuel. 12. A cooling circuit according to claim 11, wherein the fuel nozzle is a center fuel nozzle. 13. A cooling circuit according to claim 11, wherein the gas turbine includes a plurality of outer fuel nozzles surrounding a center fuel nozzle, and wherein the cooling circuit directs the passive purge flow to the outer fuel nozzles and the center fuel nozzle.

이 특허에 인용된 특허 (31)

Faucher Joseph E. (East Hartford CT) Wright Richard R. (Willimantic CT) Pane ; Jr. Francis C. (South Windsor CT) Kwoka David (Windsor CT), Anti-coke fuel nozzle.
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Martz Lyle F. (Verona PA), Combined cycle electric power plant and a gas turbine and afterburner having coordinated fuel transfer.
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Taylor Colin ; O'Brien Patrick Lee, Compressor bleed pressure storage for controlled fuel nozzle purging of a turbine power generating system.
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Futa, Jr., Paul W.; Rice, David W.; Nieter, Thomas A., Flow divider & purge air system for a gas turbine engine.
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Matthews John A. (Melrose CT) Washburn David A. (South Glastonbury CT) Sarli Vito J. (Manchester CT), Fuel nozzle guide and seal for a gas turbine engine.
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Stuttaford,Peter; Jennings,Stephen T.; McMahon,Ryan; Mack,Brian R., Fully premixed secondary fuel nozzle with dual fuel capability.
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Corbett Nicholas C. (Solihull GB2) Lines Norman (Rugby GB2) Steward Lynn I. T. (Coventry GB2), Gas generators.
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Corbett Nicholas C.,GB2 ; Lines Norman P.,GB2 ; Steward Lynn I. T.,GB2, Gas generators having dual fuel injector purge means.
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Mandai Shigemi,JPX ; Gora Tetsuo,JPX ; Nishida Koichi,JPX ; Ota Masataka,JPX ; Fukue Ichiro,JPX ; Akamatsu Shinji,JPX ; Tanimura Satoshi,JPX ; Haruta Hideki,JPX ; Takasaki Tomohisa,JPX ; Tachibana Te, Gas turbine combustion system and combustor ignition method therefor.
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Nakamoto Yukimasa,JPX, Gas turbine fuel system comprising fuel oil distribution control system, fuel oil purge system, purging air supply system and fuel nozzle wash system.
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Yukimasa Nakamoto JP, Gas turbine fuel system comprising fuel oil distribution control system, fuel oil purge system, purging air supply system and fuel nozzle wash system.
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Yukimasa Nakamoto JP, Gas turbine fuel system comprising fuel oil distribution control system, fuel oil purge system, purging air supply system and fuel nozzle wash system.
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Yukimasa Nakamoto JP, Gas turbine fuel system comprising fuel oil distribution control system, fuel oil purge system, purging air supply system and fuel nozzle wash system.
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Sood Virendra M. (Encinitas CA) Faulkner Robie L. (Santee CA), Injection nozzle tip cooling.
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Klaass Reinhard M. (Phoenix AZ) Minshall Bert J. (Scottsdale AZ) Suriano Francis J. (Scottsdale AZ) Caan William (Scottsdale AZ), Integrated power unit.
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Traver Robert S. ; Iasillo Robert J. ; Kaplan Howard J. ; Drazba John E., Liquid fuel and water injection purge system for a gas turbine.
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Mick, Warren James; Reddy, Urmila Chennuru; Iasillo, Robert Joseph, Liquid fuel nozzle apparatus with passive protective purge.
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Iasillo,Robert J.; Mick,Warren James, Liquid fuel nozzle apparatus with passive water injection purge.
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Schirmer Robert M. (Bartlesville OK) Alquist Henry E. (Savannah GA), Method and apparatus for burning high nitrogen-high sulfur fuels.
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Lovett Jeffery A. (Scotia NY), Multi-stage fuel nozzle for reducing combustion instabilities in low NOX gas turbines.
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Dickinson, Norman L., Pollution-free low temperature slurry combustion process utilizing the super-critical state.
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Yukimasa Nakamoto JP, Purging air supply system for a gas turbine.
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Eichelberger, Donald Paul; Farese, David John; Cohen, Joseph Perry; Colwell, Richard Layton, Self-contained mobile fueling station.
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Corbett Nicholas C. (Solihull GB2) Lines Norman P. (Rugby GB2) Steward Lynn I. T. (Coventry GB2), Steam injection system for a combustion turbine gas generator.
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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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Fuel nozzle passive purge cap flow 원문보기

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이 특허에 인용된 특허 (31)

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Fuel nozzle passive purge cap flow 원문보기

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