HYDROSTATIC AND ACTIVE CONTROL MOVABLE PAD BEARING

摘要

A one piece hydrodynamic bearing which can include hydrostatic support features (30p). The pads (31) are supported on a single thin web (37) for pivoting on a support structure which can include one or more beam-like members (302). The bearings may have hydrostatic and active control attributes and is very attractive in cryogenic applications where it is very difficult to prevent leakage in conventional hydrostatic tilt pad bearings. The hydrostatic feed (30p) through the post (37) eliminates this problem completely and prevents the fretting at the pivots common with conventional tilt pad bearings. A cavity (30g) provided under a pad support membrane (301) can be used as an active control device.