Deaerator pressure control system for a combined cycle steam gen

Details Deaerator pressure control system for a combined cycle steam gen Deaerator pressure control system for a combined cycle steam gen

1984-10-25

1985-12-03

Husar, Stephen F.

Power plants

Motive fluid energized by externally applied heat

Having condition responsive control

60657, F01K 1302

Patent

active

045559066

ABSTRACT:
In a combined cycle steam generation power plant, until steam extraction can be used to reheat the deaerator, the economizer and/or the pegging recirculation are controlled so as to track the pressure upwards of the autocirculation reheater from the low pressure evaporator with a certain lag in pressure, and to establish pressure in the deaerator on the decreasing trend of the autocirculation reheater at a slower rate and without lowering below a minimum pressure so as to prevent the occurrence of bubbling and cavitation effect.

REFERENCES:
patent: 3955358 (1976-05-01), Martz et al.
patent: 3965675 (1976-06-01), Martz et al.
patent: 4311013 (1982-01-01), Kuribayashi et al.

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