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Magnetic suspension rail magnetic shielding device and method

A magnetic levitation and magnetic shielding technology, which is applied in the field of rail transit, can solve the problems of low-frequency magnetic field leakage of magnetic levitation tracks, etc., and achieve the effect of solving low-frequency magnetic field leakage, facilitating processing, and adjusting structural parameters

Pending Publication Date: 2017-05-31
CHINA RAILWAY ERYUAN ENG GRP CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a magnetic shielding device for a magnetic levitation track and a magnetic shielding method for a magnetic levitation track, which can effectively solve the problem of leakage of the low-frequency magnetic field of the magnetic levitation track

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  • Magnetic suspension rail magnetic shielding device and method
  • Magnetic suspension rail magnetic shielding device and method
  • Magnetic suspension rail magnetic shielding device and method

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Embodiment Construction

[0015] see Figure 1~6 .

[0016] The principle of the present invention is that a energized coil is placed in a low-frequency shielding material, and according to the law of electromagnetic induction, the energized induction coil will excite a magnetic field in its surrounding space. The magnetic field generated by the induction coil in the low-frequency magnetic shielding material is completely enclosed in the magnetic shielding material without leaking to the outside. Low-frequency magnetic shielding is realized by using the characteristics of ferromagnetic materials with high permeability, small reluctance, and shunting effect on the magnetic field. Since the reluctance of ferromagnetic materials is much smaller than that of air, the magnetic force lines are concentrated in the shielding layer, so that the low-frequency magnetic field does not go beyond the shielding layer.

[0017] see figure 2 , 3 , The low-frequency magnetic shielding device of the present inventio...

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Abstract

The invention provides a magnetic suspension rail magnetic shielding device and method, which relates to a rail traffic technology, in particular to an electromagnetic shielding technology of a magnetic suspension train. The magnetic suspension rail magnetic shielding device comprises a magnetic shielding material layer and a wave absorption material layer, wherein the magnetic suspension rail magnetic shielding device is provided with a through hole penetrating through the magnetic shielding material layer and the wave absorption material layer. The low-frequency magnetic shielding device provided by the invention has the advantages that simplicity is realized; the implementation is easy; the process is simple; the effect is obvious; the structure parameters of the shielding material can be adjusted; the processing realization is facilitated; simulation and practical verification proves that the shielding effect is obvious; great practical application values are realized.

Description

technical field [0001] The invention relates to rail transit technology, in particular to electromagnetic shielding technology for maglev trains. Background technique [0002] With the widespread promotion and application of maglev rail transit, the low-frequency magnetic field leakage of maglev linear motors is becoming more and more serious. It can be considered that the linear motor is a structural evolution of the rotary motor. The gap between the primary and secondary of a linear motor is the air gap. The air gap of the linear induction motor in the subway and medium-low speed maglev train is much larger than that of the rotary induction motor. Due to the existence of the air gap, the low-frequency magnetic field will leak at the edge of the air gap. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a magnetic shielding device for a magnetic levitation track and a magnetic shielding method for a magnetic lev...

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Application Information

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IPC IPC(8): H02K11/01
Inventor 虞凯熊洁魏波段永奇杨捷易立富
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD