Regulation system for steam turbines

Details Regulation system for steam turbines Regulation system for steam turbines

1978-10-04

1980-08-19

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91451, 91459, 91461, F15B 903, F15B 909, F15B 13044

Patent

active

042178100

ABSTRACT:
A regulation system for steam turbines which includes a servomotor controlled by a servovalve (1) and two safety valves (31, 31') controlled by two electrically-operated valves (19, 19'). When the control inlet (7) of the servomotor is connected to the drain pipe (6) by at least one of the safety valves, the high-pressure fluid supply to the servovalve is simultaneously cut and the high-pressure fluid source is thereby prevented from discharging directly into the drain pipe. This enables high-pressure fluid sources having a low discharge rate to be used.

REFERENCES:
patent: 3826174 (1974-07-01), Platt

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