Rotor journal bearing having adjustable bearing pads

Details Rotor journal bearing having adjustable bearing pads Rotor journal bearing having adjustable bearing pads

1995-06-02

1996-07-02

Footland, Lenard A.

Bearings

Rotary bearing

Fluid bearing

384114, F16C 1703

Patent

active

055315232

ABSTRACT:
An adjustable pad bearing for the rotor shaft journal of a steam turbine power system or the like provides a pre-load force on the top half of the journal so as to damp the system and move criticals away from the operating range. An adjustable pad bearing in accordance with the invention provides for maintenance of system vibrations at or below desirable levels. The pre-load force is applied to the top half of the journal as a result of oil or a like viscous fluid collected in a pressure dam in the pad. The position of the pad bearing in relation to the top half of the journal is adjustable to change the magnitude and location of the pre-load force, as well as the pressure dam angular orientation of that force.

REFERENCES:
patent: 4035038 (1977-07-01), Hinchcliffe et al.
patent: 4627746 (1986-12-01), Grisel et al.
patent: 4643592 (1987-02-01), Lewis et al.
patent: 5271676 (1993-12-01), Keck et al.

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