Shield device for annular permanent magnet

A technology of shielding device and permanent magnet, which is applied in the direction of synchronous machine parts, etc., can solve the problems of non-existence, imperfect overall structure, and inability to realize shielding, and achieve the effects of reducing magnetic energy loss, uniform force, and increasing output power

Inactive Publication Date: 2010-11-03
应德贵
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of motor has strong pull-in synchronization ability, and its power factor and efficiency are improved. Provide a new type of annular permanent magnet shielding device to solve the above problems

Method used

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  • Shield device for annular permanent magnet
  • Shield device for annular permanent magnet
  • Shield device for annular permanent magnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] see Figure 1 to Figure 3 As shown, the annular permanent magnet shielding device of the present embodiment has a frame 1, a central axis 2 is fixed on the frame, an annular permanent magnet 3 is installed on the central axis, and the annular permanent magnet and the central axis form Interference installation, a rotating shield body 4 is arranged outside the annular permanent magnet; Shape), the rotating shield body is installed on the central axis through the rotating connector 5, this embodiment is provided with two rotating connectors, respectively arranged on both sides of the rotating shielding body, the rotating connecting member and the two sides of the rotating shielding body The wall is fixedly connected, and a bearing 6 is respectively provided in the two rotating connectors; thereby realizing the rotating connection between the rotating shield and the central shaft; a power input wheel 7 is installed with the rotating connector; described in this embodiment ...

Embodiment 2

[0038] This embodiment is a technical solution improved on the basis of the first embodiment, and the same parts as the first embodiment will not be described in detail. see Figure 5 , Figure 6As shown, a magnetically conductive sleeve 9 is set outside the central shaft, and the magnetically conductive sleeve is installed between the central shaft and the annular permanent magnet, and the two ends of the magnetically conductive sleeve slide with the rotating shield The two ends of the magnetic conductive sleeve are provided with contact surfaces 10 corresponding to the rotating shield. This embodiment adopts such a design, which can make the magnetic conducting sleeve and the rotating shield form a magnetic conducting circuit; when the rotating shield shields a part of the magnetic field of the annular permanent magnet, the magnetic field lines 13 of the N pole of this part of the magnetic field cannot penetrate Correspondingly, the left side wall of the rotating shield ha...

Embodiment 3

[0040] This embodiment is a technical solution improved on the basis of the second embodiment, and the same parts as the second embodiment will not be described in detail. see Figure 7 , Figure 8 As shown, a helical excitation coil 11 is sheathed outside the magnetic conduction sleeve, and the excitation coil is installed between the magnetic conduction sleeve and the annular permanent magnet, and passes through the positioning collars 12 installed on both sides of the excitation coil. fixed. During the regenerating process, the power generation coil will generate an attractive force on the rotating shielding body, hindering the rotation of the shielding body; therefore, an electric current can be input on the exciting coil to make the exciting coil generate a magnetic pole in the same direction as the annular permanent magnet. Under the action of current, the magnetic field lines 14 introduced into the rotating shielding body are instantly saturated and penetrate the rota...

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Abstract

The invention relates to a shield device for an annular permanent magnet. In the device, a machine frame is provided with a central axis; the central axis is provided with the annular permanent magnet; at least one rotary shield body is arranged outside the annular permanent magnet; the rotary shield body is fan-shaped, and the fan-shaped fracture surface of the rotary shield body is [-shaped; and the rotary shield body is arranged on the central axis through a rotary connecting piece. The device can realize that a rotary shielding case rotates around the central axis and has the characteristic of uniform stress by adopting a design that at least one rotary shielding case is arranged outside the annular permanent magnet, can realize open and close of each swing shielding case just through small power input of dynamic input wheels by adopting a design that at least two swing shielding cases are arranged out the annular permanent magnet, and each swing shielding case is arranged on the central axis through a swing connecting piece, and ensures that a concentrating flux sleeve and the rotary shielding cases form a concentrating flux loop by adopting the design of the concentrating flux sleeve so as to effectively increase the magnetic flux and reduce magnetic field loss.

Description

technical field [0001] The present invention relates to an annular permanent magnet shielding device, in particular to a shielding device equipped with an annular permanent magnet and a rotating shielding body. The shielding device drives the rotating shielding body to rotate and reciprocate through a power input wheel. The annular permanent magnet The magnet shielding device can utilize the rotating magnetic shielding principle to generate electric energy and utilize the magnetic attraction and repulsion of the annular permanent magnet to generate driving force. Background technique [0002] Patent No. ZL00252880.0 discloses a permanent magnet synchronous motor with high pull-in synchronous capacity, including a base and a stator assembled therein, a rotor composed of a rotating shaft, an iron core, a permanent magnet, and a squirrel-cage guide bar, and is characterized in that The radially distributed permanent magnets are embedded in the permanent magnet slots of the roto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/02
Inventor 应德贵
Owner 应德贵
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