Bearing assembly and submersible propulsor unit incorporating th

Details Bearing assembly and submersible propulsor unit incorporating th Bearing assembly and submersible propulsor unit incorporating th

1991-05-01

1993-04-27

Carone, Michael J.

Bearings

Rotary bearing

Plain bearing

384308, 440 6, 310 87, H02K 512

Patent

active

052056538

ABSTRACT:
A pivoted pad bearing assembly of the Kingsbury type provides for leveling of bearing pads arranged in a circular array utilizing hydrostatic pressure rather than mechanical links. The leveling device is in the form of a hydraulic bearing support module having a variable volume hydraulic chamber. Pipe segments connect each hydraulic chamber to form a closed circuit and the circuit is completely filled with hydraulic fluid. Thereby, equal force will be exerted upon each pad at all times so that all pads will operate at an equal thrust load. The bearing assembly has particularly useful application in an integral motor submersible propulsor as a large diameter thrust bearing housed within an outer shroud of the propulsor at both upstream and downstream ends of a rotor mounted about the periphery of a propeller of the propulsor. By placing the thrust bearing within the shroud, greater thrust bearing surface areas can be obtained to handle larger thrust. By using hydrostatic leveling, the noise associated with mechanical linkages is avoided, and the size and weight of the bearing assembly can advantageously be reduced.

REFERENCES:
patent: 1996195 (1935-04-01), Ferguson
patent: 2197432 (1940-04-01), Kingsbury
patent: 3398996 (1968-08-01), Wucherer
patent: 3708251 (1973-01-01), Pierro
patent: 4360751 (1982-11-01), Arnold, Jr. et al.
patent: 4459087 (1984-01-01), Barge
patent: 4544285 (1985-10-01), Shapiro et al.
patent: 4657411 (1987-04-01), Bath
patent: 4831297 (1989-05-01), Taylor et al.
patent: 4876492 (1989-10-01), Lester et al.
Brochure of Jastram-Werke GmbH KG entitled "Jastram Forschung--From the Idea to the Marketable Product" dated Aug. 1988.
Waukesha Bearings Publication No. TPF-100, Tilting Pad Thrust Bearing Selection Guide, undated.

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