Apparatus for controlling the operation of a water turbine or a

Details Apparatus for controlling the operation of a water turbine or a Apparatus for controlling the operation of a water turbine or a

1982-01-25

1984-10-09

Marcus, Stephen

Rotary kinetic fluid motors or pumps

With control means responsive to non-cyclic condition...

By shaft speed or torque responsive means

415500, F03B 1508

Patent

active

044758650

ABSTRACT:
An increment speed per unit time from the detected rotation speed of a water turbine or a pump turbine with an inlet valve is compared with a prescribed increment to deliver a close order to the inlet valve, when the increment becomes greater than the prescribed increment, for closing the inlet valve to a prescribed opening. Then, a fully open order to the inlet valve is delivered under the condition that neither an emergency shutdown order nor a quick shutdown order is issued to the water turbine or the pump turbine, when a speed governor performs a normal operation.

REFERENCES:
patent: 3207473 (1965-09-01), Madden
patent: 3236497 (1966-02-01), Wycliffe
patent: 3730638 (1973-01-01), Kuwabara
patent: 4047831 (1977-09-01), Mayo, Jr. et al.
patent: 4137004 (1979-01-01), Kuwabara et al.
patent: 4253794 (1981-03-01), Kuwabara
patent: 4354800 (1982-10-01), Kuwabara

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