METHOD AND DEVICE FOR EMERGENCY BRAKE OF A COMPRESSOR

摘要

When magnetic bearings in a compressor for boosting hydrocarbon transport in pipelines fail or in connection with power failure, backup bearings of a mechanical type must take over. These backup bearings are subject to wear. To reduce the wear on the backup bearings and thus increase the time between maintenance operations, which is particularly important for a compressor on the seabed, a compressor is proposed equipped with an eddy current brake based on a permanent magnet (1) which can be switched fast to a braking position with a brake disc (5) on the compressor's rotary shaft by means of a mechanically pretensioned spring system (2, 3, 4, 8, 9).