Combined cycle power plant with steam cooled gas turbine

Details Combined cycle power plant with steam cooled gas turbine Combined cycle power plant with steam cooled gas turbine

1998-02-27

2000-09-12

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 3975, F02C 618, F02C 716

Patent

active

061160172

ABSTRACT:
In a combined cycle power plant, exhaust from a high pressure turbine is branched so that part of it is supplied to a steam cooling system, and the other part of it is supplied to an inlet of a reheater of an exhaust heat recovery boiler. The exhaust supplied to the steam cooling system performs predetermined cooling and becomes heated. Then, the heated exhaust is guided from an outlet of the steam cooling system to an intermediate position of the reheater, merged with the exhaust supplied to the inlet of the reheater, and temperature-adjusted in the reheater. Then, the reheated, combined steam is supplied to a downstream turbine for heat recovery. Thus, a safe, reliable steam cooling system is achieved by effectively using a sufficient amount of high pressure turbine exhaust.

REFERENCES:
patent: 4424668 (1984-01-01), Mukherjee
Patent Abstracts of Japan; Abstract for JP 06323162, Nov. 22, 1994.

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