Electromagnetic levitation system with superimposed transverse rotating static magnetic field

Abstract

The invention discloses an electromagnetic suspension system for overlaying a transverse rotating static magnetic field, and belongs to the technical field of electromagnetic suspension. The system is characterized in that a tapered back winding coil 2 is connected with a high-frequency power supply 1 and extends into a vacuum chamber 6, the high-frequency power supply 1 inputs high-frequency alternating current to the tapered back winding coil 2, the alternating current generates an alternating magnetic field around the high-frequency power supply 1, induced current can be generated on the surface of a metal material placed in the tapered back winding coil due to the electromagnetic induction action, the induced current and an original alternating magnetic field interact to generate electromagnetic force, and the electromagnetic force and weight are balanced under the condition of configuration of appropriate magnetic field space, so that the electromagnetic suspension is realized; and a rotating mechanism 4 drives a U-shaped magnet yoke 3 to rotate, and the rotating U-shaped magnet yoke overlays the transverse rotating static magnetic field on the space (the space where a suspended object is located) where the tapered back winding coil is located, so that internal convection of the melted suspended object is reduced, the external rotation is reduced, and a stable electromagnetic suspension state is obtained.

Description

Technical field: [0001] The invention relates to an electromagnetic levitation system superimposed with a transversely rotating static magnetic field, and belongs to the technical field of electromagnetic levitation. Background technique: [0002] In the ground environment, crucibles are indispensable for conventional melting of metals or non-metallic materials, but it is difficult to choose suitable crucible materials for high-melting-point metals such as Ti, Zr, and Mo with strong chemical activity. In addition, the preparation of high-purity materials, the study of the reaction kinetics of materials and gases in liquid state, the accurate measurement of material thermophysical parameters and the homogeneous nucleation process of molten metals all need to eliminate the influence of crucible materials, which requires a The technology that can suspend materials in both solid and liquid states, electromagnetic levitation smelting technology can meet the above requirements. ...

AI Technical Summary

Problems solved by technology

[0005] 1. The through hole of the superconducting equipment needs to be coaxial with the suspension coil, and the axis of the suspension coil can only be in the vertical direction. Therefore, only the static magnetic field in the vertical direction can be superimposed, and the convection in the horizontal direction can only be suppressed.

[0006] 2. The static magnetic field strength that needs to be superimposed is too large, and the magnetic field strength often needs to reach more than 2 Tesla to obtain a basically stable suspension state

[0007] 3. The equipment is complicated and expensive, and the cost of the equipment is as high as nearly ten million yuan. There is no such equipment in China at present

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