Control system for use with steam injected gas turbine

Details Control system for use with steam injected gas turbine Control system for use with steam injected gas turbine

1988-07-13

1990-01-16

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

60 3955, F02C 330

Patent

active

048934674

ABSTRACT:
A steam injection system for use in a gas turbine engine having a turbine coupled to an air compressor for providing air to the turbine combustor. Steam generated by a boiler or the like is treated by removing moisture and particulates from the steam supply and steam is then injected by a line into the combustion chamber. A control unit is arranged to sequence a series of valves so as to purge the line each time an injection cycle is started or ended. The valves can also be sequenced during an emergency shut down to prevent steam from flowing back through the compressor.

REFERENCES:
patent: 2959005 (1960-11-01), Zaba
patent: 3359723 (1967-12-01), Bohensky et al.
patent: 3693347 (1972-09-01), Kydd et al.
patent: 4549397 (1985-08-01), Cheng
patent: 4597256 (1986-03-01), Hamill et al.
patent: 4660376 (1987-04-01), Johnson
patent: 4680927 (1987-10-01), Cheng
patent: 4735043 (1988-11-01), Hamill et al.
Maximum Steam Injection in Gas Turbines, W. H. Day and P. H. Kydd, General Electric Company, Schenectady, N.Y., (10/4/72).

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