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Ha lbach type permanent magnet track with high temperature stability

A stable, high-temperature technology, applied in the field of magnetic levitation, can solve problems such as temperature stability of magnetic properties of permanent magnetic tracks, fluctuation of magnetic properties of permanent magnetic tracks, and influence on the suspension and guidance performance of superconducting blocks, etc., to improve the magnetic field The effect of rough conditions

Pending Publication Date: 2021-09-21
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the design of the permanent magnet track in the above high-temperature superconducting maglev system only considers the magnetic properties of the permanent magnet track at room temperature, and does not consider the temperature stability of the magnetic properties of the permanent magnet track
In practical applications, changes in the ambient temperature will cause fluctuations in the magnetic properties of the permanent magnet track, which in turn will affect the suspension and guidance performance of the high-temperature superconducting block above the magnetic track. However, there is no permanent magnet track with excellent temperature stability.

Method used

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  • Ha lbach type permanent magnet track with high temperature stability
  • Ha lbach type permanent magnet track with high temperature stability
  • Ha lbach type permanent magnet track with high temperature stability

Examples

Experimental program
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Embodiment 1

[0026] Such as figure 1 As shown, this embodiment provides a Halbach type permanent magnet track with high temperature stability.

[0027] see figure 1 , figure 1 It is a schematic cross-sectional view of a Halbach-type permanent magnet track, showing that the present embodiment includes at least three first permanent magnets 2, at least one left-right symmetrical second permanent magnet group 4 and at least one left-right symmetrical third permanent magnet Group 5, in the Halbach type permanent magnet track actually used, it is made up of a plurality of first permanent magnets 2, the second permanent magnet group 4 and the third permanent magnet group 5, in this embodiment, only shown in the figure Three first permanent magnets 2, the second permanent magnet group 4 and the third permanent magnet group 5, but it can be understood that, in actual use, a plurality of first permanent magnets 2, a plurality of second permanent magnets Group 4 and the permanent magnet track tha...

Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 lies in the difference between the second ratio and the third ratio and the magnetization directions of the first sub-permanent magnet 41, the second sub-permanent magnet 42, the third sub-permanent magnet 51 and the fourth sub-permanent magnet 52 It is different from the acute angle formed by the horizontal direction, so in this application, both Embodiment 1 and this embodiment use figure 1 can be.

[0034] Such as figure 1 As shown, this embodiment provides a Halbach type permanent magnet track with high temperature stability.

[0035] see figure 1 , figure 1 It is a schematic cross-sectional view of a Halbach-type permanent magnet track, showing that the present embodiment includes at least three first permanent magnets 2, at least one left-right symmetrical second permanent magnet group 4 and at least one left-right symmetrical third permanent magnet Group 5, in the Halbach type permanent magnet track actu...

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Abstract

The invention provides a Ha lbach type permanent magnet track with high temperature stability and relates to the technical field of magnetic levitation. The Ha lbach type permanent magnet track comprises at least three first permanent magnets, at least one second permanent magnet group which are symmetric left and right and at least one third permanent magnet group which are symmetric left and right, wherein the magnetization direction of the first permanent magnets is the horizontal direction, and the ratio of the width to the height of the first permanent magnets is recorded as a first ratio; each second permanent magnet group is arranged between the two first permanent magnets, each second permanent magnet group comprises a first sub permanent magnet and a second sub permanent magnet, the ratio of the width to the height of the second sub permanent magnet is recorded as a second ratio, and the second ratio is different from the first ratio; each third permanent magnet group is arranged between the two first permanent magnets, each third permanent magnet group comprises a third sub permanent magnet and a fourth sub permanent magnet, the ratio of the width to the height of the third sub permanent magnet is recorded as a third ratio, and the third ratio is different from the first ratio; under the condition that the sectional area of the permanent magnet track is not increased, temperature stability of the permanent magnet track is improved.

Description

technical field [0001] The invention relates to the technical field of magnetic suspension, in particular to a Halbach type permanent magnet track with high temperature stability. Background technique [0002] At present, countries in the world that have successfully developed high-temperature superconducting maglev systems include China, Germany, Brazil and Russia. However, the design of the permanent magnet track in the above high-temperature superconducting maglev system only considers the magnetic properties of the permanent magnet track at room temperature, and does not consider the temperature stability of the magnetic properties of the permanent magnet track. In practical applications, changes in ambient temperature will cause fluctuations in the magnetic properties of permanent magnet tracks, which in turn affect the suspension and guiding performance of high-temperature superconducting blocks above the magnetic tracks. However, there is no permanent magnet track wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B25/30
CPCE01B25/30
Inventor 邓自刚王文张晋恺
Owner SOUTHWEST JIAOTONG UNIV