Boiler feed pump turbine control system

Details Boiler feed pump turbine control system Boiler feed pump turbine control system

1980-04-21

1983-01-18

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Having condition responsive control

60665, F22D 532

Patent

active

043687733

ABSTRACT:
A boiler feed pump turbine system wherein the feed pump turbine speed is controlled by a signal locally generated by an operator up to a certain minimum speed and thereafter by a signal automatically commanded by a boiler feedwater control system. During operation within a certain speed range in which the signal from the boiler feedwater control system is controlling, a locally generated signal in the feedpump turbine control signal is caused to track the boiler control system signal so that in the event of failure thereof, the feed pump turbine may be controlled by the locally generated signal as opposed to reducing its speed to zero as would normally be dictated by the failed signal.

REFERENCES:
patent: 3818699 (1974-06-01), Pritchard
patent: 4087860 (1978-05-01), Beatty et al.
patent: 4173124 (1979-11-01), Fujii et al.

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