Control apparatus and method of operating the same

Details Control apparatus and method of operating the same Control apparatus and method of operating the same

1979-04-30

1981-12-01

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

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

Plural diverse condition responsive

415 22, F01B 2500

Patent

active

043033709

ABSTRACT:
A control apparatus comprises a primary control unit composed of wicket gates of a hydraulic turbine and a secondary control unit composed of a bypass valve which is operated to open or close in cooperation with the opening or closing of the wicket gates. First and second link mechanisms are provided between the wicket gates and a hydraulic pressure distributor valve which is operatively connected to the bypass valve to control opening or closing of the latter. The first link mechanism detects the opening or closing motion of the wicket gates and transmits the corresponding signal to the hydraulic pressure distributor valve for the bypass valve, while the second link mechanism detect position of a pressure distributor valve plunger for the wicket gates and transmits the corresponding signal to the distributor valve for the bypass valve. A reset cylinder contains a piston which is connected to the second link mechanism and is operated by a solenoid valve to reset the last-mentioned signal when the wicket gates are held stationary in the fully closed position.

REFERENCES:
patent: 1309808 (1919-07-01), Pfau
patent: 2343223 (1944-02-01), Pfau et al.
patent: 2938527 (1960-05-01), Nichols
patent: 4097183 (1978-06-01), Namikas et al.

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