Power plants – Combustion products used as motive fluid
Patent
1995-05-16
1996-11-26
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 39182, F02C 618
Patent
active
055773770
ABSTRACT:
In a method of operating a combined cycle system including a gas turbine, a steam turbine and a multi-pressure heat recovery steam generator, an improvement includes supplying gas turbine cooling duty steam from a high pressure section of the steam turbine and from an intermediate pressure evaporator in the multi-pressure heat recovery steam generator, conducting the gas turbine cooling duty steam to the gas turbine for cooling hot gas turbine parts, and then returning the gas turbine cooling duty steam to an intermediate pressure section of the steam turbine. In a start-up procedure, steam is extracted from a first pass of a high pressure superheater in the multi-pressure heat recovery steam generator, mixed with steam discharged from the high pressure superheater and then supplied to the gas turbine cooling duty system. In this same start-up procedure, the gas turbine cooling duty steam is returned to the system condenser, bypassing the intermediate pressure section of the steam turbine. Related apparatus is also disclosed.
REFERENCES:
patent: 1901873 (1893-03-01), Holzwarth
patent: 3691760 (1972-09-01), Vidal et al.
patent: 3879616 (1975-04-01), Baker et al.
patent: 4424668 (1984-01-01), Mukherjee
patent: 4519207 (1985-05-01), Okabe et al.
patent: 4576124 (1986-03-01), Martens et al.
patent: 5042247 (1991-08-01), Moore
patent: 5199256 (1993-04-01), Moore
patent: 5253976 (1993-10-01), Cunha
patent: 5412937 (1995-05-01), Tomlinson et al.
patent: 5428950 (1995-07-01), Tomlinson et al.
patent: 5471832 (1995-12-01), Sugita et al.
"GE Combined-Cycle Product Line and Performance", Chase et al, GE Power Generation, 38th GE Turbine State-of-the-Art Technology Seminar, Aug. 1994.
"GE Combined-Cycle Experience", Maslak et al., GE Power Generation, 38th GE Turbine State-of-the-Art Technology Seminar, Aug. 1994.
"Single-Shaft Combined-Cycle Power Generation System", Tomlinson et al. GE Power Generation, 38th Turbine State-of-the-Art Technology Seminar, Aug. 1994.
Casaregola Louis J.
General Electric Co.
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