Power plants – Motive fluid energized by externally applied heat – Power system involving change of state
Patent
1994-04-07
1995-04-11
Lazarus, Ira S.
Power plants
Motive fluid energized by externally applied heat
Power system involving change of state
60677, F01K 734
Patent
active
054047242
ABSTRACT:
An improved cycle arrangement for a steam turbine system in which an auxiliary turbine drives a boiler feedwater pump. The turbine system includes a primary turbine driving an electric power generator. The primary turbine includes a high pressure section and a low pressure section. A boiler supplies steam to drive the primary and auxiliary turbines. A condenser recovers exhaust steam from the LP section and a plurality of feedwater heaters preheats condensate collected at the condenser and pumped back to the boiler. The system extracts steam from the HP turbine section for operating the auxiliary turbine. Extracted steam from the auxiliary turbine is isolated from the primary turbine by coupling the steam to a feedwater heater supplied solely from a corresponding extraction point of the auxiliary turbine. The exhaust steam from the auxiliary turbine is coupled directly to the condenser.
REFERENCES:
patent: 3176267 (1965-03-01), Takeda
patent: 4043130 (1977-08-01), Brown et al.
Seven Years' Experience With Single Turbine-Driven Feed Pumps Serving Large Generating Units by T. T. Frankenberg and John A. Tillinghast. Presented at American Power Conference, Apr., 1964.
Heyman L.
Lazarus Ira S.
Westinghouse Electric Corporation
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