Power plants – Motive fluid energized by externally applied heat – Having condition responsive control
Patent
1978-02-07
1979-11-06
Ostrager, Allen M.
Power plants
Motive fluid energized by externally applied heat
Having condition responsive control
60646, 122451R, F01K 1302
Patent
active
041731247
ABSTRACT:
The boiler feed water system is provided with a motor driven feed water pump and a steam turbine driven feed water pump. The control system comprises a digital computer including a flow quantity control system responsive to the degree of opening of a flow control valve and the discharge quantity of the motor driven feed water pump for controlling the flow quantity thereof, and a speed control system responsive to the speed and discharge flow quantity of the steam turbine driven feed water pump, head pressure of the feed water system and the operation of a control motor for a steam control valve of a pump driving turbine. The control is switched between the flow quantity control system and the speed control system in accordance the load of the plant.
REFERENCES:
patent: 3972196 (1976-08-01), Silvestri, Jr.
Fujii Katsumasa
Takeda Naoshi
Ostrager Allen M.
Tokyo Shibaura Kenki Kabushiki Kaisha
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