Power plants – Combustion products used as motive fluid – With safety device
Patent
1977-03-07
1978-11-21
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
With safety device
60 3918B, 122 7R, F02C 702
Patent
active
041259963
ABSTRACT:
In a safety device for a waste-gas channel of a gas turbine in a combined gas turbine-steam power plant, the waste-gas channel having a waste-gas bypass line as well as a waste-gas branch line to a steam generator, includes a bypass flap disposed in the bypass line and a waste-gas flap disposed in the branch line, both the flaps being openable and closable in opposition to one another, the waste-gas flap being constructed as a check flap, and motor means for driving the waste-gas flap with free-wheeling beyond a range of the end positions thereof so that, at the beginning of closing movement of the bypass flap, the waste-gas flap is drivable from the closed position thereof by the motor means until the friction of the closed position thereof is overcome, means for signaling to the bypass flap partial opening of the waste-gas flap so as only then to effect complete closing of the bypass flap, the waste-gas flap being further openable automatically in response to increasing gas pressure in the waste-gas branch line and being retainable by the motor means in open position of the waste-gas flap.
REFERENCES:
patent: 3118429 (1964-01-01), Hochmoth
patent: 3574302 (1971-04-01), Csathy
"Energie", 27th Annual, Book 3, Mar. 1975, p. 68.
Casaregola Louis J.
Kraftwerk Union Aktiengesellschaft
Lerner Herbert L.
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