Title: Hydraulic turning arrangement for a turbine rotor

Abstract: A hydraulic arrangement for turning the rotor shaft of an axial flow elastic fluid turbine rotor. The arrangement includes a variable speed hydraulic motor, the torque produced thereby being dependent upon the pressure of motive fluid supplied therethrough. The motor is connected through suitable coupling or clutch to the shaft. A plurality of sources of motive fluid each at a predetermined pressure range are connected to the motor. A flow control arrangement for selectively introducing motive fluid from each of the plurality of sources to the hydraulic motor to provide the desired torque output from the motor is provided.

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Inventors: Easter, Michael J. (Pineville, NC, US)

Application Number: 610038
Filing Date: 1975-09-03
Publication_date: 1976-12-21
Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
Primary Class(es): 60/413 60/456, 60/486
Other Classes:
US Patent Ref:

1634894	Jul, 1927	Allen	60/704.
2074618	Mar, 1937	Roeder	60/486.
2483349	Sep, 1949	Petty et al.	60/486.
2526646	Oct, 1950	Ericson	60/486.
2651258	Sep, 1953	Pierce	60/486.
2914908	Dec, 1959	Memmel	60/486.

Other Refs:
Primary Examiner: Geoghegan, Edgar W.
Assistant Examiner:
Attorney: Baehr, Jr.; F. J.