Magnetic bearing seat structure with embedded magnetic isolation sleeves

Abstract

The invention discloses a magnetic bearing seat structure with embedded magnetic isolation sleeves. A radial magnetic bearing is sleeved with a magnetic isolation sleeve; the radial magnetic bearing and the magnetic isolation sleeve are in transitional fit or small interference fit with each other; the radial magnetic bearing sleeved with the magnetic isolation sleeve is arranged in a magnetic bearing seat; a radial magnetic bearing fixing ring is fixed on the magnetic bearing seat; two thrust magnetic bearings are spaced apart by a certain gap; a spacer ring is arranged between the two thrustmagnetic bearings; the thrust magnetic bearings and the spacer ring jointly form a thrust magnetic bearing unit; a magnetic isolation sleeve sleeves the thrust magnetic bearing unit; the magnetic isolation sleeve and the thrust magnetic bearing unit are in small clearance fit with each other; the thrust magnetic bearing unit sleeved with the magnetic isolation sleeve is arranged in the magnetic bearing seat; a thrust magnetic bearing fixing ring is fixed on the magnetic bearing seat; and the magnetic isolation sleeves are in interference fit with the magnetic bearing seat. According to the magnetic bearing seat structure with embedded magnetic isolation sleeves of the invention, the thinner stainless steel sleeves can be made from pipes, so that raw materials are easy to obtain; and a very large interference value is not required to be set, and the requirements of repeated disassembly and assembly can be met.

Description

Technical field: [0001] The invention relates to a magnetic bearing seat structure embedded with a magnetic isolation sleeve. Background technique: [0002] In the magnetic bearing motor, the main magnetic circuit of the magnetic bearing is composed of three parts: the magnetic material of the magnetic bearing rotor, the magnetic material of the magnetic bearing stator (silicon steel sheet, pure iron, etc.) and the air gap, and the magnetic circuit other than these three parts It is called the magnetic leakage circuit, and the magnetic leakage circuit will affect the working efficiency of the magnetic bearing. In engineering applications, since the stator and rotor materials of the magnetic bearing cannot exist independently, they are usually attached to other components. For example, the magnetic bearing rotor is usually connected to the motor rotor, and the magnetic bearing stator is fixed to the motor base. The effect of attached components on the magnetic circuit of the...

AI Technical Summary

Problems solved by technology

[0008] However, when the magnetic bearing structure increases with the increase of the motor, the demand for interference increases, and the larger interference value will impose strict requirements on the assembly process, or when choosing materials such as carbon steel and cast iron to reduce costs, other The magnetic properties of the material have an adverse effect on the work of the magnetic bearing, such as image 3 shown

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