Backup bearings for positive re-centering of magnetic bearings

Details Backup bearings for positive re-centering of magnetic bearings Backup bearings for positive re-centering of magnetic bearings

F - Mech Eng,Light,Heat,Weapons

16

F

F16F 15/315 (2006.01) F16C 32/04 (2006.01) F16C 39/00 (2006.01) F16C 39/06 (2006.01) F16F 15/18 (2006.01) H02K 7/02 (2006.01) H02K 7/08 (2006.01) H02K 7/09 (2006.01)

Patent

CA 2241729

Bearing systems, such as magnetic bearings, are widely used today in a variety of applications. All bearing systems are, however, subject to failure. Therefore, backup bearing systems are often utilized in conjunction with a main bearing system in order to provide backup to the main bearings if they should fail. The backup bearing system for the re-centering of magnetic bearings includes a first conical member disposed about an axis and having at least one bearing disposed substantially therein; a second conical member spaced from the first conical member and disposed about the axis, the second conical member having at least one bearing disposed substantially therein; and an actuator assembly spaced from the second conical member and bearing in a first or operative position. The actuator assembly acts to move the second conical member and bearings disposed therein between the first, operative position where the backup bearing system is operating to re-center the magnetic bearings, to a second, inoperative position, when the magnetic bearings are once again operating.

Les systèmes de paliers tels que les paliers magnétiques sont largement utilisés de nos jours. Toutefois, ils sont tous susceptibles d'avoir des défaillances. C'est pourquoi on utilise souvent des systèmes de paliers de renfort en combinaison avec un système de paliers principal. Le système de paliers de renfort pour le recentrage de paliers magnétiques comprend un premier élément conique placé autour d'un axe et dans lequel au moins un palier est sensiblement disposé, un deuxième élément conique espacé du premier, disposé autour de l'axe et dans lequel est sensiblement disposé au moins un palier, et un ensemble d'actionnement espacé du deuxième élément conique et du deuxième palier dans une première position, ou position de fonctionnement. L'ensemble d'actionnement a pour effet de faire passer le deuxième élément conique et les paliers disposés dedans de la première position, la position de fonctionnement, où le système à paliers de renfort agit pour recentrer les paliers magnétiques, à une deuxième position, où il n'y a pas fonctionnement, quand les paliers magnétiques fonctionnent de nouveau.

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