Single degree of freedom magnetic suspension rotor support system as well as magnetic bearing and weight losing method

A magnetic levitation rotor and magnetic levitation bearing technology, which is applied to bearings, shafts and bearings, and control mechanical energy, can solve the problems that are not conducive to improving the effective bearing capacity of permanent magnetic levitation bearings and reducing the effective utilization of permanent magnet magnetic energy, so as to achieve the improvement of levitation bearing capacity, Effects of reducing gravity hazards and improving work reliability
CN101769334AInactive Publication Date: 2010-07-07张玉宝
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
张玉宝
Publication Date
2010-07-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a single degree of freedom magnetic suspension rotor support system as well as a magnetic bearing and weight losing method. The support system is composed of complete permanent magnetic radial magnetic suspension bearings, or driving / driven mixed type magnetic suspension bearings, or complete permanent magnetic pre-stress magnetic suspension bearings, as well as a weight losing bias magnet device and a radial / axial air gap limit protection device, wherein, the complete permanent magnetic radial magnetic suspension bearings, or driving / driven mixed type magnetic suspension bearings, or complete permanent magnetic pre-stress magnetic suspension bearings are arranged at the left and right of an electric motor (5) and maintain good proper alignment with the stator / rotor parts of the electric motor. By utilizing the synergic action of the axial stabilizing force of electric motor and the radial stabilizing force of magnetic bearings, the rotating part in the system is constrained in a single degree of freedom magnetic suspension state of only doing tangential dead axle rotation. The complete permanent magnetic radial magnetic suspension bearings (6, 7) are formed by respectively arranging two annular permanent magnets and maintaining the heights of interfaces at two sides to be symmetrical and the interfaces at two sides to attract each other via axial air gap, wherein the two annular permanent magnets are magnetized axially, have equivalent magnetic pole face, different volumes and magnetic attraction forces, and are respectively provided with an external magnetism conductive yoke.
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Description

Technical field:

[0001] The invention relates to a single-degree-of-freedom magnetic levitation rotor support system, in particular to a self-stabilizing single-degree-of-freedom magnetic levitation rotor support system that can not use feedback control technology. The invention also relates to a magnetic suspension bearing device constituting a single-degree-of-freedom magnetic suspension rotor support system, including an all-permanent radial magnetic suspension bearing, an all-permanent permanent magnet prestressed magnetic suspension shaft, an active-passive hybrid magnetic suspension bearing, and a method for setting up a motor and a generator. The invention also relates to a weight-reducing bias magnet device and a setting method for reducing the gravity harm of the rotating body to the magnetic suspension bearing. The invention also relates to a radial-axial air gap limit protection device for the magnetic suspension bearing in the single-degree-of-freedom magnetic susp...

Claims

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