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Water-cooling structure for auxiliary bearing of magnetic suspension motor

A technology of magnetic levitation bearing and auxiliary bearing, applied in the direction of bearing cooling, bearing components, shaft and bearing, etc., can solve the problems of grease viscosity decrease, failure, carbonization and sintering, etc., and achieve the effect of reducing failure rate and temperature

Inactive Publication Date: 2016-12-21
NANJING CIGU TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many machines have high-temperature environments, and such auxiliary bearings are still prone to failure due to high temperatures, such as grease viscosity drop, loss, and even carbonization and sintering, which reduces the reliability of the magnetic levitation motor.

Method used

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  • Water-cooling structure for auxiliary bearing of magnetic suspension motor
  • Water-cooling structure for auxiliary bearing of magnetic suspension motor

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] The present invention relates to a water-cooled structure for an auxiliary bearing of a magnetic levitation motor, comprising a rotor 1, a magnetic levitation bearing 2, an auxiliary bearing 3 and a bearing seat 4, the magnetic levitation bearing 2 and the auxiliary bearing 3 are arranged in the bearing seat 4, and the rotor 1 is supported by the magnetic levitation bearing 2 and the bearing seat 4. Inside the auxiliary bearing 3. A cooling chamber, a water inlet flow channel 11 and a water outlet flow channel 12 are arranged on the bearing seat 4, and the water inlet flow channel 11 and the water outlet flow channel 12 are connected with the cooling chamber. The auxiliary bearing 3 and the bearing seat 4 in the present invention are excessively fit, and its positioning method is the same as that of the auxiliary bearing in the prior art, so the positioning meth...

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PUM

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Abstract

The invention discloses a water-cooling structure for an auxiliary bearing of a magnetic suspension motor. The water-cooling structure comprises a rotor, a magnetic suspension bearing, the auxiliary bearing and a bearing pedestal, wherein the magnetic suspension bearing and the auxiliary bearing are arranged in the bearing pedestal; the rotor is supported in the magnetic suspension bearing and the auxiliary bearing; a cooling chamber, a water inlet runner and a water outlet runner are arranged on the bearing pedestal, and the water inlet runner and the water outlet runner communicate with the cooling chamber; and the auxiliary bearing and the bearing pedestal are in transition fit.

Description

Technical field: [0001] The invention relates to a water cooling structure of an auxiliary bearing of a magnetic levitation motor. Background technique: [0002] The principle of the magnetic suspension bearing is to use the magnetic force of the controlled electromagnet to levitate the rotor. The magnetic suspension bearing will fail when the machine is shut down or the power is unexpectedly cut off. Therefore, it is necessary to install mechanical bearings as auxiliary bearings in the existing magnetic suspension bearings. However, mechanical bearings and magnetic suspension bearings have different requirements for the working environment: magnetic suspension bearings do not need lubrication and are not sensitive to ambient temperature; while mechanical bearings need to use lubricating oil or grease, and lubrication failure, carbonization, Even the failure of the rolling element stuck. [0003] The magnetic levitation motor relies on the magnetic bearing to support the ro...

Claims

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Application Information

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IPC IPC(8): F16C37/00
CPCF16C37/00F16C2380/00
Inventor 胡思宁吴立华董继勇
Owner NANJING CIGU TECH CORP LTD