Auxiliary manual turbine controller

Details Auxiliary manual turbine controller Auxiliary manual turbine controller

1977-02-23

1978-06-27

Ostrager, Allen M.

Power plants

Motive fluid energized by externally applied heat

Having apparatus cleaning, sealing, lubricating, purging,...

60646, 60660, 415 36, 415 15, 251131, F01K 1302

Patent

active

040966992

ABSTRACT:
A steam turbine control system comprising a primary and an auxiliary manual turbine controller, each said turbine controller including a set of valve position setpoint controllers for close-loop control of the turbine steam admission valves, is disclosed. Each valve position setpoint controller operates, at times, on a position error signal to generate a valve position control signal which controls the rate of valve position movement of a corresponding turbine steam admission valve. The steam admission valves are closed-loop controlled by a selected set of said primary and auxiliary valve position setpoint controllers. The set of valve position control signals corresponding to the selected set of position setpoint controllers are coupled to their respective turbine steam admission valves for controlling the rate of position movement therein. The valve position error and position control signals of the unselected set of said controllers are maintained at approximately zero potential. Transfer logic is provided to coordinate the selection of the primary and auxiliary controllers.

REFERENCES:
patent: 3741246 (1973-06-01), Braytenbah
patent: 3911286 (1975-10-01), Uram

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