Centrifugal gas compressor magnetic bearing thrust collar with mounting pilots

摘要

A thrust collar (161) includes a central disk (162), a forward wing (163), and an aft wing (164). The central disk (162) is a disk shaped hollow cylinder with a central axis (97). The forward wing (163) and the aft wing (164) are thin walled hollow cylinders extending axially from an inner portion of the central disk (162) about the central axis (97) in opposite directions. The forward wing (163) includes a forward mounting pilot (165) extending radially inward from the forward wing (163) distal to the central disk (162). The aft wing (164) includes an aft mounting pilot (167) extending radially inward from the aft wing (164) distal to the central disk (162).

主权项

1. A centrifugal gas compressor, comprising:
a shaft extending from a discharge end to a suction end; a thrust collar mounted to the shaft, the thrust collar having
a central disk, the central disk being a disk shaped hollow cylinder with a central axis,a forward wing, the forward wing being a thin walled hollow cylinder extending axially from an inner portion of the central disk about the central axis, andan aft wing, the aft wing being a thin walled hollow cylinder extending axially from the inner portion of the central disk about the central axis in a direction opposite the forward wing,the central disk, the forward wing, and the aft wing are configured to form a shaft cavity extending along the central axis, the shaft cavity having an inner surface,wherein a forward mounting pilot protrudes radially inward beyond the inner surface proximal an end of the forward wing distal to the central disk, contacting the shaft, and an aft mounting pilot protrudes radially inward beyond the inner surface proximal an end of the aft wing distal to the central disk, contacting the shaft; and a magnetic bearing having
a forward bearing pole located axially forward of the central disk with a forward axial clearance there between and radially outward from the shaft with a radial clearance there between; andan aft bearing pole located axially aft of the central disk with an aft axial clearance there between and radially outward from the shaft with a radial clearance there between.