Auxiliary bearing centering device

摘要

An auxiliary bearing system may include an auxiliary bearing receiver housing and an inertia ring. The auxiliary bearing receiver housing may include an axial inner surface, a first radially extending surface, and a first arcuate surface extending therebetween. The inertia ring may include an axial outer surface, a second radially extending surface, and a second arcuate surface extending therebetween. The second arcuate surface may have a radial outer end adjacent the second radially extending surface and a radial inner end adjacent the axial outer surface. The inertia ring may define a first angle between the axis of rotation of the shaft and a first tangent at a first point on the second arcuate surface adjacent the radial outer end, and a second angle between the axis of rotation of the shaft and a second tangent at a second point on the second arcuate surface adjacent the radial inner end.

主权项

1. An auxiliary bearing system to support a rotating shaft, comprising:
an auxiliary bearing receiver housing including a first arcuate surface extending between a first radially extending surface of the auxiliary bearing receiver housing and an axial inner surface of the auxiliary bearing receiver housing; and an inertia ring coupled to the rotating shaft, the inertia ring comprising:
an axial outer surface;a second radially extending surface parallel to the axial outer surface;a second arcuate surface extending between the axial outer surface and the second radially extending surface, the second arcuate surface having a radial outer end at or adjacent the second radially extending surface and a radial inner end at or adjacent the axial outer surface;a first angle defined between the axis of rotation of the rotating shaft and a first tangent at a first point on the second arcuate surface at or adjacent the radial outer end; anda second angle defined between the axis of rotation of the rotating shaft and a second tangent at a second point on the second arcuate surface at or adjacent the radial inner end, wherein
the first angle is greater than the second angle, andthe second arcuate surface is configured such that the auxiliary bearing receiver housing seats the inertia ring when the inertia ring contacts the auxiliary bearing receiver housing.