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A magnetic levitation motor without thrust disc

A magnetic levitation, no thrust technology, applied in the direction of holding devices and electrical components using magnetic attraction or thrust, can solve the problems of limiting the critical speed of the motor, large volume and mass, low motor efficiency, etc., to improve the anti-interference ability and improve the rotor. Speed, weight reduction effect

Active Publication Date: 2019-06-11
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

The magnetic levitation motor can reach tens of thousands of speeds per minute due to the characteristics of non-contact rotation and no lubrication. However, the current magnetic levitation motor has a thrust plate structure to ensure the controllability of the axial direction in consideration of the axial control. However, its structure It also limits the critical speed of the motor, the efficiency of the motor is low, and the volume and mass are relatively large, which is greatly restricted in some fields that have strict requirements on volume and mass, especially aerospace. question

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  • A magnetic levitation motor without thrust disc
  • A magnetic levitation motor without thrust disc
  • A magnetic levitation motor without thrust disc

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 As shown, a magnetic levitation motor without a thrust disk in the present invention is composed of a static part and a rotating part. The static part includes: the static part of the three-degree-of-freedom integrated hybrid magnetic bearing 1, the radial displacement sensor 2, and the high-speed motor 3. The static part, the inner cylinder 4, the housing 5 and the mounting ring 9; the rotating part includes: the rotating part of the three-degree-of-freedom integrated hybrid magnetic bearing 1, the alloy steel rotor 8, the rotor permanent magnet 6 of the high-speed motor 3, and the permanent magnet protective cover 7 and locking threaded ring 10. The high-speed motor 3 is located in the middle of the device, and its rotor permanent magnet is installed in the middle of the two alloy steel rotors 8 by the permanent magne...

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Abstract

The invention discloses a magnetic suspension motor without a thrust collar. The magnetic suspension motor is mainly composed of three-degree-of-freedom integrated hybrid magnetic bearing, a protective bearing, radial and axial displacement sensors, an alloy steel rotor, a high-speed motor, a housing, a locking thread ring. The high-speed motor is located at the center and is successively followed by the radial displacement sensor, the three-degree-of-freedom integrated hybrid magnetic bearing, the protective bearings, and the axial sensor outwards. The entire system is sealed inside the housing. The magnetic suspension motor has high rotor critical speed, improves rotor safety margin, and is small in volume, light in weight, high in efficiency, high in reliability and high in power density.

Description

technical field [0001] The invention relates to the technical field of magnetic levitation motors, in particular to a magnetic levitation motor without a thrust disk, which can be used as a driving device in the fields of centrifugal compressors, turbomolecular pumps, turbo refrigeration compressors, etc., and can also be used as fuel pumps, flywheels, and controllers. Moment gyroscopes and other high-tech, low-energy industries and power sources for aerospace equipment. Background technique [0002] The problem of speed is one of the main restrictive factors for the low efficiency and low reliability of high-speed rotating machinery such as compressors, vacuum machines, and refrigerators. Improving the speed and stability of motors and reducing energy consumption are the core issues that need to be solved urgently in the field of high-speed machinery . The magnetic levitation motor can reach tens of thousands of speeds per minute due to the characteristics of non-contact r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N15/00
CPCH02N15/00
Inventor 韩邦成贺赞翟鲁鑫郑世强王坤刘刚乐韵
Owner BEIHANG UNIV
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