Radial stator core structure, bearing stator and hybrid radial magnetic bearing

Abstract

The invention provides a radial stator core structure which comprises a radial stator core and a radial ring connected together, wherein the inner ring of the radial stator core is provided with a wire winding groove; a protruding part corresponding to the wire winding groove is arranged on the outer circumferential wall of the radial stator core; and a groove part in transition fit with the protruding part is arranged on the radial ring. The invention further provides a hybrid radial magnetic bearing which comprises a rotor and a bearing stator, wherein the rotor is coaxially arranged in thebearing stator. Compared with the prior art, the magnetic conductive area of the radial stator core is increased on the condition that the boundary dimension is not increased, and the problem in the prior art that magnetic saturation can be reached easily at the wire winding groove of the radial stator core is solved, so that the electromagnetism utilization ratio and the bearing capacity of the bearing are increased and improved. The radial stator core structure can further optimize the assembling technology to increase the assembling success rate and product percent of pass.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a radial stator core structure, a bearing stator and a hybrid radial magnetic suspension bearing. Background technique [0002] Magnetic suspension bearing refers to a high-performance electromechanical integrated bearing that uses electromagnetic force to stably suspend the supported part in space, so that there is no mechanical contact between the supporting part and the supported part. The hybrid radial magnetic bearing is a combined magnetic bearing system formed on the basis of active magnetic bearings, passive magnetic bearings and other auxiliary support and stabilizing structures. It uses the magnetic field generated by the permanent magnet to replace the static bias magnetic field of the electromagnet. , can significantly reduce the ampere-turns of the electromagnet, reduce the volume of the magnetic bearing, reduce power consumption, and increase the carrying capacity....

AI Technical Summary

Problems solved by technology

[0006] 1. Thermal assembly is used between the radial ring and the radial stator core in the prior art, which is difficult to assemble and has low assembly efficiency;

[0007] 2. During the hot assembly process of the radial ring and the radial stator core in the prior art, due to insufficient heating of the parts or environmental influences, it is easy to cause thermal assembly failure, low product qualification rate, and high production cost;

[0008] 3. During the thermal assembly process of the radial ring and the radial stator core in the prior art, the cooling shrinkage of the radial ring is difficult to accurately control, and the accuracy after installation cannot be guaranteed;

[0009] 4. The radial stator core winding slots in the prior art are easy to reach magnetic saturation, and the electromagnetic utilization rate and carrying capacity of the bearing are therefore greatly limited

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