Combined cycle electric power plant and a heat recovery steam ge

Details Combined cycle electric power plant and a heat recovery steam ge Combined cycle electric power plant and a heat recovery steam ge

1974-08-08

1977-06-21

Macon, Robert S.

Prime-mover dynamo plants

Electric control

Engine control

60 3918B, 60 3918C, 60 3918R, 60664, 60667, 122479R, F01K 2300

Patent

active

040314049

ABSTRACT:
A combined cycle electric power plant includes gas and steam turbines and a steam generator for recovering the heat in the exhaust gases exited from the gas turbine and for using the recovered heat to produce and supply steam to the steam turbine. The steam generator includes a superheater tube through which a fluid, e.g. water, is directed to be additionally heated into superheated steam by the exhaust gas turbine gases. An afterburner further heats the exhaust gas turbine gases passed to the superheater tube. The temperature of the gas turbine exhaust gases is sensed for varying the fuel flow to the afterburner by a fuel valve, whereby the temperatures of the gas turbine exhaust gases and therefore of the superheated steam, are controlled. Further, override signals are generated to prevent the temperature of the superheated steam from falling below a predetermined minimum level and for preventing the temperature and pressure of the superheated steam from exceeding maximum levels.

REFERENCES:
patent: 3446014 (1969-05-01), Foster-Pegg
patent: 3675426 (1972-07-01), Vidal et al.
patent: 3741246 (1973-06-01), Braytenbah
patent: 3756029 (1973-09-01), Aguet
patent: 3762162 (1973-10-01), Miura
patent: 3879616 (1975-04-01), Baker et al.
patent: 3892975 (1975-07-01), Yannone et al.

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