Title:
METHOD AND APPARATUS FOR ACTUATING FUEL TRIM VALVES IN A GAS TURBINE
Document Type and Number:
WIPO Patent Application WO2005047670
Kind Code:
A3
Abstract:
A gas turbines (10) has multiple combustion chambers (14), and within each chamber are multiple fuel nozzles (16, 18, and 20). Each nozzle has its own fuel control valve. To minimize the pressure drop through the fuel control valves, multiple manifolds (22, 24, and 26) are employed. A plurality of thermocouples (40) for measuring exhaust gas from said multiple combustion chambers are employed to sense gas exhaust temperature. In one method of operation, because it is desirable that each combustion chamber in the gas turbine be well balanced relative to the remaining combustion chambers, the multiple combustion chambers are tuned such that no specific combustion chamber is rich or lean, and all are operating within about 1 % of the average of the remaining combustion chambers. To determine the state (rich, lean or average) of each combustion chamber, a swirl chart is used to be able to identify the influence of a combustion chamber on the temperatures measured by multiple thermocouples.
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Inventors:
KOTHNUR VASNATH SRINIVASA (US)
ALI MOHAMED AHMED (US)
ROBERTS MATTHEW EUGENE (US)
VANDALE DANIEL DOYLE (US)
ALI MOHAMED AHMED (US)
ROBERTS MATTHEW EUGENE (US)
VANDALE DANIEL DOYLE (US)
Application Number:
PCT/US2004/037641
Publication Date:
September 01, 2005
Filing Date:
November 10, 2004
Export Citation:
Assignee:
GEN ELECTRIC (US)
KOTHNUR VASNATH SRINIVASA (US)
ALI MOHAMED AHMED (US)
ROBERTS MATTHEW EUGENE (US)
VANDALE DANIEL DOYLE (US)
KOTHNUR VASNATH SRINIVASA (US)
ALI MOHAMED AHMED (US)
ROBERTS MATTHEW EUGENE (US)
VANDALE DANIEL DOYLE (US)
International Classes:
F02C7/22; F02C7/228; F02C9/28; F23N1/00; F23N5/10; F23R3/34; F23R3/46; (IPC1-7): F02C7/228; F02C9/28
Domestic Patent References:
| WO2002061337A1 | 2002-08-08 |
Foreign References:
| EP1331448A2 | 2003-07-30 | |||
| EP1065346A1 | 2001-01-03 | |||
| EP0677706A1 | 1995-10-18 | |||
| US4027473A | 1977-06-07 | |||
| US5024055A | 1991-06-18 | |||
| EP1445450A1 | 2004-08-11 | |||
| US5423175A | 1995-06-13 | |||
| US20020183916A1 | 2002-12-05 | |||
| US20020150142A1 | 2002-10-17 | |||
| US6003296A | 1999-12-21 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 03 31 March 1999 (1999-03-31)
PATENT ABSTRACTS OF JAPAN vol. 005, no. 166 (M - 093) 23 October 1981 (1981-10-23)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30)
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 04 4 August 2002 (2002-08-04)
PATENT ABSTRACTS OF JAPAN vol. 005, no. 166 (M - 093) 23 October 1981 (1981-10-23)
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30)
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 04 4 August 2002 (2002-08-04)
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