ELECTRIC MACHINE Russian patent published in 2001 - IPC

FIELD: electrical engineering, electric machine engineering, design of generators. SUBSTANCE: electric machine carrying aid for its attachment has rotor with case of stator, bearings, sealing units and space between rotor and stator filled with lubricating fluid. Sealing unit locate at side of attachment aid comes in the form of piston mounted for axial movement and butt seal including two contact rings, one of them being mobile in axial direction. Contact ring immobile in axial direction is made as one unit with bushing over which piston travels. EFFECT: increased operational reliability of electric machine and enlarged range of variation of ambient pressure and temperature. 3 cl, 4 dwg