Method and apparatus for hydraulic turbine rotation for repair

Details Method and apparatus for hydraulic turbine rotation for repair Method and apparatus for hydraulic turbine rotation for repair

1989-03-20

1989-12-05

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

2940201, 2940218, 82117, B21K 300

Patent

active

048843261

ABSTRACT:
A method and apparatus is disclosed for rotation of a hydroelectric assembly (1) for purposes of repairing and resurfacing of turbine liner walls (8) pitted as a result of cavitation. The method includes rotation of turbine blades (6) and a turbine shaft (7) through a turning mechanism (18) positioned on a blade (6) so that turning forces are exerted directly between the turning mechanism and the surface of the liner wall (8). The turning mechanism (18) comprises a mounting assembly (19) which mounts a turning wheel (22) driven by a motor drive assembly (24) through a gear reduction mechanism (26). A biasing assembly (27) is provided to selectively urge the turning wheel (22) into frictional contact with the surface of the liner wall (8).

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patent: 4285108 (1981-08-01), Arrigoni
patent: 4805282 (1989-02-01), Reaves et al.

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