Hydrostatic and active control movable pad bearing

F - Mech Eng,Light,Heat,Weapons – 16 – C

Patent

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F16C 32/06 (2006.01) F16C 17/03 (2006.01)

Patent

CA 2169085

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 application 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.

Palier hydrodynamique en une seule pièce qui peut comprendre des éléments (30p) de support hydrostatique. Les coussinets (31) sont placés sur une seule colonnette mince (37) de manière à pivoter sur une structure de support qui peut comporter un ou plusieurs éléments (302) de type flèche. Le palier peut être hydrostatique et posséder une commande active et il est très intéressant dans les applications cryogéniques où il est difficile de prévenir les fuites dans les paliers hydrostatiques à coussinets basculants classiques. Le passage pour fluide hydrostatique (30p) à travers la colonnette (37) élimine complètement ce problème et empêche l'usure au niveau des pivots, laquelle est fréquemment observée avec des paliers à coussinets basculants classiques. Une cavité (30g) ménagée sous une membrane (301) de support de coussinet peut être utilisée comme dispositif de commande actif.

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