Rotodynamic machine for the forwarding of a fluid

Details Rotodynamic machine for the forwarding of a fluid Rotodynamic machine for the forwarding of a fluid

F - Mech Eng,Light,Heat,Weapons

16

C

F16C 39/06 (2006.01)

Patent

CA 2233998

A rotodynamic machine for the forwarding of a fluid, such as a turbomachine or a centrifugal pump, has at least one drive and bearing apparatus which is designed as an electrical machine with a stator and with a magnetically journalled rotor. Electrical windings produce the required torque and the magnetic bearing force and are arranged together in the stator. The rotor forms a section of the shaft of the turbomachine and a control apparatus and excites the two windings. A magnetic suspension force acting on the rotor is produced with the first winding in order to hold the shaft in the radial direction without contact. The torque acting on the rotor is produced with the second winding.

L'invention concerne une machine rotodynamique permettant de transporter un fluide, telle qu'une turbomachine (2) ou une pompe centrifuge, comportant au moins un dispositif d'entraînement et d'appui (1), se présentant sous forme de moteur électrique comportant un stator et un rotor (4a) monté de manière magnétique. Les enroulements (15, 16) qui déclenchent le couple et la force d'appui magnétique, sont montés conjointement sur le stator. Le rotor (4a) constitue une section de l'arbre (4) de la turbomachine (2). Il est prévu un dispositif de régulation (7) qui pilote les deux enroulements (15, 16), de manière que le premier enroulement (16) produise une force portante magnétique s'exerçant sur le rotor (4a), afin de maintenir l'arbre (4) sans contact dans le sens radial et que le second enroulement (15) produise un couple agissant sur le rotor (4a).

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