System for purging gas fuel circuit for a gas turbine engine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-003/22
F02C-007/232
출원번호
US-0294088
(2011-11-10)
등록번호
US-9650955
(2017-05-16)
발명자
/ 주소
Sabelhaus, Eric Michael
Stowell, Thomas Edward
Przytulski, James Charles
Aviles Sandoval, Raymundo
출원인 / 주소
GENERAL ELECTRIC COMPANY
대리인 / 주소
Fletcher Yoder, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
11
초록▼
A system includes a multi-fuel gas turbine configured to operate on both a liquid fuel system and a gas fuel system, wherein the multi-fuel gas turbine comprises a compressor, a combustor, and a turbine. The system also includes a gas fuel purge system configured to purge a gas fuel circuit of the g
A system includes a multi-fuel gas turbine configured to operate on both a liquid fuel system and a gas fuel system, wherein the multi-fuel gas turbine comprises a compressor, a combustor, and a turbine. The system also includes a gas fuel purge system configured to purge a gas fuel circuit of the gas fuel system during liquid fuel operation of the gas turbine, wherein the gas fuel purge system is configured to sequentially purge the gas fuel circuit with air and steam.
대표청구항▼
1. A system, comprising: a multi-fuel gas turbine configured to operate on both a liquid fuel system and a gas fuel system, wherein the multi-fuel gas turbine comprises a compressor, a combustor, and a turbine; anda gas fuel purge system configured to purge a gas fuel circuit of the gas fuel system
1. A system, comprising: a multi-fuel gas turbine configured to operate on both a liquid fuel system and a gas fuel system, wherein the multi-fuel gas turbine comprises a compressor, a combustor, and a turbine; anda gas fuel purge system configured to purge a gas fuel circuit of the gas fuel system during liquid fuel operation of the gas turbine, wherein a controller is configured to control the gas fuel purge system to sequentially purge the gas fuel circuit initially with air by flowing the air through a gas manifold of the gas fuel circuit into the combustor prior to meeting a steam injection permissive threshold of temperature and subsequently, upon meeting the steam injection permissive threshold, purge the gas fuel circuit with steam by flowing the steam through the gas manifold into the combustor. 2. The system of claim 1, wherein the gas fuel purge system comprises an air purge circuit configured to purge the gas fuel circuit with the air and a steam purge circuit configured to purge the gas fuel circuit with the steam. 3. The system of claim 2, wherein the air purge circuit and the steam purge circuit are at least partially independent circuits. 4. The system of claim 2, wherein gas fuel purge system comprises a common purge circuit having the air purge circuit and the steam purge circuit. 5. The system of claim 3, wherein the gas fuel purge system comprises a three-way valve comprising a first port interfacing with a first line from a steam supply, a second port interfacing with a second line from a compressor discharge port of the compressor, and a third port interfacing with the air purge circuit, the three-way valve is configured to open the second and third ports and to close the first port while purging the gas fuel circuit with the air, and the three-way valve is configured to open the first and second ports and to close the third port while purging the gas fuel circuit with the steam. 6. The system of claim 3, wherein the air purge circuit and the steam purge circuit are completely independent circuits. 7. The system of claim 2, wherein the steam purge circuit comprises an orifice configured to enable a first portion of the steam to flow towards a compressor discharge port of the compressor and a second portion of the steam to flow into the steam purge circuit to purge the gas fuel circuit of the gas fuel system. 8. The system of claim 1, wherein the gas fuel purge system comprises a drain line configured to drain a steam condensate from the gas circuit while purging the gas fuel circuit with the steam. 9. A system, comprising: a dual air and steam purge system configured to purge a gas fuel circuit coupled to a multi-fuel gas turbine during liquid fuel operation of the gas turbine, wherein the dual air and steam purge system comprises an air purge circuit configured to purge the gas fuel circuit with air and a steam purge circuit configured to purge the gas fuel circuit with steam, wherein a controller is configured to control the dual air and steam purge system to sequentially purge the gas fuel circuit initially with the air by flowing the air through a gas manifold of the gas fuel circuit into a combustor of the multi-fuel gas turbine prior to meeting a steam injection permissive threshold of temperature and subsequently, upon meeting the steam injection permissive threshold, purge the gas fuel circuit with the steam by flowing the steam through the gas manifold into the combustor. 10. The system of claim 9, comprising the multi-fuel gas turbine having the dual air and steam purge system. 11. The system of claim 9, wherein the air purge circuit and the steam purge circuit are at least partially independent circuits. 12. The system of claim 11, wherein the air purge circuit and the steam purge circuit converge into a common purge circuit upstream of the gas fuel circuit. 13. The system of claim 9, wherein the air purge circuit and the steam purge circuit are completely independent circuits. 14. The system of claim 9, wherein the dual air and steam purge system comprises a three-way valve comprising a first port interfacing with a first line from a steam supply, a second port interfacing with a second line from a compressor discharge port of a compressor of the multi-fuel gas turbine, and a third port interfacing with the air purge circuit, the three-way valve is configured to open the second and third ports and to close the first port while purging the gas fuel circuit with the air, and the three-way valve is configured to open the first and second ports and to close the third port while purging the gas fuel circuit with the steam. 15. A method for purging a gas fuel circuit of a multi-fuel gas turbine, comprising: beginning operation of the multi-fuel gas turbine on a liquid fuel;initially purging the gas fuel circuit with air by flowing the air through a gas manifold of the gas fuel circuit into a combustor of the multi-fuel gas turbine;monitoring steam parameters of a steam supply to determine if the steam parameters meet a steam injection permissive threshold of temperature; andsubsequently purging the gas fuel circuit with steam upon the steam parameters meeting the steam injection permissive threshold by flowing the steam through the gas manifold into the combustor. 16. The method of claim 15, comprising: closing a first port of a three-way valve interfacing with a first line from the steam supply and opening both a second port of the three-way valve interfacing with a second line from a compressor discharge port of a compressor of the multi-fuel gas turbine and a third port of the three-way valve interfacing with an air purge circuit when initially purging the gas fuel circuit with the air; andopening both the first and second ports of the three-way valve and closing the third port of the three-way valve while purging the gas fuel circuit with the steam.
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이 특허에 인용된 특허 (11)
Woodson Carl W. (Ballston Lake NY), Control method for use with steam injected gas turbine.
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.
Robert Scott Traver ; Robert Joseph Iasillo ; Howard Jay Kaplan ; Troy Joseph Schroeder ; Christopher John Morawski, Liquid fuel and water injection purge systems and method for a gas turbine having a three-way purge valve.
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.
Nenmeni, Vijay Raghavendran; Rozdolski, Michael John; Chillar, Rahul Jaikaran, System and method for transitioning between fuel supplies for a combustion system.
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