Superconducting cable and conductor critical current testing device

A critical current and superconducting cable technology, which is applied in superconducting performance measurement, magnetic performance measurement, etc., can solve the problems of high test cost and long test cycle, and achieve saving sample preparation time, low test cost and simple low temperature system Effect

Inactive Publication Date: 2017-08-25
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The critical current of superconducting conductors is an important indicator for evaluating the performance of superconducting conductors.

Method used

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  • Superconducting cable and conductor critical current testing device

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Embodiment Construction

[0026] See attached figure 1 .

[0027] Superconducting cable and conductor critical current testing device, including back field magnet 6, superconducting transformer 2, low temperature system, low temperature system includes Dewar 8 and liquid helium container 9 arranged in Dewar 8, back field magnet 6, superconducting transformer 2 The conduction transformer 2 is immersed in the liquid helium in the liquid helium container 9, the back field magnet 6 is hoisted in the Dewar 8 through four back field magnet suspension rods 5, and connected to the DC power supply through the high temperature superconducting current lead 1, and the superconducting transformer 2 is located above the back field magnet 6, and the conductor sample 7 to be tested is located in the back field magnet 6, and the back field magnet 6 provides magnetic fields of different strengths for the conductor sample 7 to be tested; the secondary coil 3 of the superconducting transformer extends downward for two Th...

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Abstract

The invention discloses a superconducting cable and conductor critical current testing device, which includes a back field magnet, a superconducting transformer, and a low temperature system. The low temperature system includes a Dewar and a liquid helium container arranged in the Dewar. The back field magnet and the superconducting transformer are immersed in the liquid helium in the liquid helium container. The back field magnet is suspended in the Dewar and is connected with a DC power supply through a high temperature superconducting current lead. The superconducting transformer is located above the back field magnet. A conductor sample under test is located in the back field magnet. A secondary coil of the superconducting transformer extends two pins downwards to be respectively connected to two ends of the conductor sample under test through a superconducting connector. A critical current of a superconducting cable or conductor under test can be obtained according to a quench criterion by measuring the voltage across and current through the two ends of the conductor sample under test. The back field magnet has a horizontal magnetic field direction, the sample under test can be easily perpendicular to the magnetic field direction, and the device of the invention has the advantages of high test precision, low test cost, compact device structure and so forth.

Description

[0001] Technical field: [0002] The invention relates to the technical field of superconducting testing, in particular to a superconducting cable and a conductor critical current testing device. [0003] Background technique: [0004] Superconducting conductors, especially CICC conductors, are widely used in fusion devices, high-energy particle accelerators, superconducting energy storage magnets, superconducting strong magnetic fields, etc. due to their advantages in mechanical structure, insulation performance, magnet winding process and operational safety. field. The establishment of high-current, high-back field superconducting cables and conductor testing devices can not only provide experimental and theoretical basis for the design and application of superconducting conductor structures, but also greatly improve the testing level of superconducting conductors in my country. [0005] The critical current of a superconducting conductor is an important indicator for evalua...

Claims

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Application Information

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IPC IPC(8): G01R33/12
CPCG01R33/1238G01R33/1246
Inventor 马红军刘华军刘方郭亮秦经刚武玉李建刚
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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