Control apparatus for hydraulically driven generator

Details Control apparatus for hydraulically driven generator Control apparatus for hydraulically driven generator

1984-03-15

1985-08-06

Shoop, William M.

Prime-mover dynamo plants

Electric control

Fluid-current motors

290 52, F03B 1502

Patent

active

045338353

ABSTRACT:
Apparatus for controlling a hydraulically driven generator for supplying electrical power to power mains. The generator is coupled to a turbine driven by a fluid flow through a duct. The duct has a one-fourth turn butterfly valve controlled by a fluid-actuated operator and the operator receives fluid from the duct by way of a normally closed valve which, when energized, creates water pressure on the operator for opening the butterfly valve. A second, normally open solenoid provides an emergency exit for the water from the operator to relieve the water pressure thereon and thereby close the butterfly valve when certain conditions exist, such as sudden loss of line voltage, overvoltage or deviation in frequency of the line voltage. A differential pressure switch across the turbine rotor also controls the starting of the system to assure proper flow of fluid through the duct before commencing operation of the generator itself.

REFERENCES:
patent: 3750001 (1973-07-01), McCloskey
patent: 4142367 (1979-03-01), Guisti
patent: 4276482 (1981-06-01), Crockett
patent: 4352024 (1982-09-01), Geary et al.

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