Control apparatus for hydraulically driven generator

Patent · Tue Aug 06 00:00:00 EDT 1985

OSTI ID:6404938

Beckwith, S

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.

• Assignee: EDB-86-001933
• Patent Number(s): US 4533835
• OSTI ID: 6404938
• Resource Relation: Patent File Date: Filed date 15 Mar 1984; Other Information: PAT-APPL-589974
• Country of Publication: United States
• Language: English

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200104* - Fossil-Fueled Power Plants- Components