Method of operating a power station plant with steam cooling

Details Method of operating a power station plant with steam cooling Method of operating a power station plant with steam cooling

1997-02-27

1999-05-25

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39182, 60 3953, F02C 330, F02C 618

Patent

active

059060956

ABSTRACT:
In a method of operating a power station plant, which essentially comprises a gas-turbine group, a waste-heat steam generator and a steam cycle, at least one portion of the steam (15, 29, 44) generated indirectly or directly in the waste-heat steam generator (14) is used for cooling thermally loaded structures of the gas-turbine group, this steam being at a varying preparation stage: the superheated steam (15) cools the structures (21, 25) on the high-pressure side, and the intermediate-pressure steam (29) and the flash steam (44) cool the structures (32, 36, 46) of the gas-turbine group which are on the low-pressure side. After cooling is effected, the respective cooling-steam quantity (22, 26; 33, 37) is directed into a working-air flow (3, 6; 8, 11) of the gas-turbine process.

REFERENCES:
patent: 4314442 (1982-02-01), Rice
patent: 4424668 (1984-01-01), Mukherjee
patent: 5340284 (1994-08-01), Cunha
patent: 5428950 (1995-07-01), Tomlinson et al.
patent: 5613356 (1997-03-01), Frutschi

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