Half-open type thrust magnetic levitation bearing

Abstract

The invention discloses a half-open type thrust magnetic levitation bearing. The bearing comprises a first magnetic ring, a second magnetic ring and a third magnetic ring, wherein the first magnetic ring, the second magnetic ring and the third magnetic ring are arranged in annular and laminating manners so as to form an annular magnetic pole; the magnetic pole of each of the magnetic rings is different from that of the adjacent magnetic ring; a first winding and a second winding of the annular magnetic pole are wound according to a predetermined half-open way, the lower part of the middle magnetic pole is recessed inwards so as to generate a winding space which meets predetermined conditions; and the magnetic pole arranged at the upper end extends, and thus, a complete circle of magnetic pole is formed after splicing. Based on the bearing, continuity and consistency of magnetic field strength of the magnetic poles of the half-opened axial thrust bearing can be basically reserved, and the half-open type thrust magnetic levitation bearing can be applied to high-speed rotation machines; and moreover, a more flexible mounting way can be obtained, particularly to large-size rotation machines.

Description

technical field [0001] The invention relates to the technical field of high-speed rotating machinery, in particular to a semi-open thrust magnetic suspension bearing. Background technique [0002] The bearings of large-scale high-speed rotating machinery are often designed as semi-open structures, especially for horizontally arranged rotors. The biggest advantage of semi-open structures is that they are easy to install and maintain. For magnetic suspension bearings, radial magnetic bearings are easy to make a semi-open structure, while axial thrust bearings must maintain the continuity and consistency of the magnetic circuit on the axial circular magnetic poles, otherwise it will A huge eddy current effect is generated to form a "braking" effect on the shafting. So far, there has been no well-designed semi-open structure design with high-speed practical value. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the relat...

AI Technical Summary

Problems solved by technology

For magnetic suspension bearings, radial magnetic bearings are easy to make a semi-open structure, while axial thrust bearings must maintain the continuity and consistency of the magnetic circuit on the axial circular magnetic poles, otherwise it will It produces a huge eddy current effect to form a "braking" effect on the shafting. So far, there has been no well-designed semi-open structure design with high-speed practical value.

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