MAGNETIC SUSPENSION BEARING AND CENTRIFUGAL COMPRESSOR

摘要

Disclosed are a magnetic suspension bearing and a centrifugal compressor. The magnetic suspension bearing comprises a rotary shaft (110) and an electromagnetic device, wherein the electromagnetic device is distributed on an outer periphery of the rotary shaft (110), and there is a gap between the electromagnetic device and the rotary shaft (110) for adjusting the position of the rotary shaft (110). The electromagnetic device comprises an iron core (120) with a winding slot, and a coil (150). The coil (150) is arranged in the winding slot. The magnetic suspension bearing (100) also comprises a protection mechanism (140) which is used for preventing the rotary shaft (110) from colliding with the electromagnetic device, thereby achieving the purpose of axially protecting the magnetic suspension bearing (100). The centrifugal compressor comprises the magnetic suspension bearing (100), thereby obtaining axial protection, so that the service life is prolonged.