Turbine control system

Details Turbine control system Turbine control system

1975-08-22

1976-07-27

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Having condition responsive control

60677, 415 17, F01D 1702, F01K 1302

Patent

active

039712192

ABSTRACT:
A control system for an extraction type steam turbine driven by steam from a steam generator wherein it is desired to control the steam pressure in the steam generator, at a predetermined level, by varying the position of the steam inlet valve. Turbine speed may be controlled at a predetermined level by varying the position of an extraction control valve. The inlet valve and the extraction valve are independently operable except under a condition where the extraction valve is completely closed and the turbine speed continues to rise. In this instance, means are provided for positioning the inlet valve according to a speed control signal which dominates an inlet pressure control signal for lowering the inlet steam valve until normal conditions are restored.

REFERENCES:
patent: 2067834 (1937-01-01), Ericson et al.
patent: 2095860 (1937-10-01), Ericson et al.
patent: 2813400 (1957-11-01), Baker
patent: 3091933 (1963-06-01), Wagner et al.
patent: 3446224 (1969-05-01), Zwicky, Jr.

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