Device for testing magnetic levitation characteristics of high-temperature superconducting coil in variable high magnetic field

Abstract

The invention discloses a device for testing magnetic levitation characteristics of a high-temperature superconducting coil in a variable high magnetic field. The device is characterized in that an insulated support plate is fixed at the top of a Dewar through support rods, a servo motor is arranged on the support plate, and a downward motor shaft of the servo motor sequentially passes through a guide rod, a tri-axial force sensor and a dowel bar to be connected with the high-temperature superconducting coil; a sensing head of a displacement sensor on the support plate is connected with the guide rod; a T-shaped liquid nitrogen container with open upper part is laid in a room temperature hole in the middle of the Dewar, the high-temperature superconducting coil is located at the middle-lower part of the inner chamber of the T-shaped liquid nitrogen container, and terminals of the high-temperature superconducting coil are connected with current lead junction poles on the support rod through current leads; an annular superconducting magnet is arranged on a chamber wall, surrounding the room temperature hole, of the Dewar. The device can test the magnetic levitation characteristics of the high-temperature superconducting coil in the variable high magnetic field, so that reliable magnetic levitation characteristic test data can be provided for design and development of high-temperature superconducting magnetically levitated trains.

Description

technical field [0001] The invention relates to the field of superconducting magnetic levitation, in particular to a high-temperature superconducting coil magnetic levitation test device. Background technique [0002] The phenomenon that the resistivity of a superconductor suddenly disappears when the temperature of the superconductor drops below a specific critical temperature is called the zero resistance effect of the superconductor. Due to the zero-resistance effect, superconducting coils wound with superconducting wires can withstand large currents, thereby generating very high magnetic fields. The magnetic field generated by the continuous current flowing in the superconducting coil interacts with the external magnetic field to produce superconducting magnetic levitation. [0003] High-temperature superconducting maglev trains are one of the important applications of high-temperature superconducting coils in the field of maglev technology. When designing and developin...

AI Technical Summary

Problems solved by technology

However, the existing high-temperature superconducting maglev testing device can only test the magnetic levitation performance of high-temperature superconducting bulk materials under the background magnetic field of permanent magnets.

However, it is impossible to test the magnetic levitation performance of the high-temperature superconducting coil under the condition of the induction variable background magnetic field of the high-temperature superconducting maglev train, and it is impossible to provide reliable maglev performance test data for the design and development of the high-temperature superconducting maglev train.

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