Magnetic levitation rotating machine

Abstract

The utility model provides a kind of magnetic suspension rotating machinery, it includes: rotor, first axial bearing, second axial bearing, thrust disc and first sensor, rotor has first shaft section and second shaft section, the outer diameter of first shaft section is less than second shaft section to form first step surface at the joint of two, the iron core of second axial bearing is also formed protruding portion in the direction away from thrust disc by stretching out in the direction away from thrust disc in axial side away from thrust disc, protruding portion is located in the radial outer side of first shaft section, first sensor is set between the outer circumference of first shaft section and the radial inner circumference of protruding portion, and the axial side of first sensor is towards first step surface, to obtain the axial displacement of rotor by detecting the axial displacement of first step surface. According to the utility model, the detection accuracy of magnetic suspension rotor axial displacement can be greatly improved;Effectively solve the problem of low axial displacement detection accuracy of rotor in the magnetic suspension compressor in the prior art, leading to low axial reliability.

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