High-temperature superconducting long-band critical current test device

Abstract

A high temperature superconductor long belt critical current testing device is mainly composed of a cylinder (1), a high temperature superconductor belt reversing mechanism (2) and a reversing and leading wire mechanism (8). The high temperature superconductor belt reversing mechanism (2) is assembled at one end of the cylinder (1), and the reversing and leading wire mechanism (8) is assembled at the other end of the cylinder (1). The cylinder (1) is L in length, R1 in inner diameter and R2 in outer diameter. The high temperature superconductor belt reversing mechanism (2) and the reversing and leading wire mechanism (8) are both a disc with the outer diameter as R2. One side of each disc is reversed eccentric 'eight diagrams' of a double-layer structure, namely first reversed eccentric 'eight diagrams' on the lower layer and second reversed eccentric 'eight diagrams' on the upper layer. The other side of each disc is an assembling disc with the diameter as R1, and the high temperature superconductor belt reversing mechanism (2) and the reversing and leading wire mechanism (8) are assembled with one end of the cylinder integrally through the assembling disc through a pin or threads respectively.

Description

technical field [0001] The invention relates to a high-temperature superconducting long-band critical current testing device. Background technique [0002] Superconducting power technology is a new type of power technology developed by utilizing the unimpeded high-density current-carrying capacity of superconductors and the physical characteristics of superconducting state-normal state transitions of superconductors. It can improve the quality of electric energy and improve the stability and reliability of power system operation. , reduce the voltage level, improve the security of the power grid and other advantages. [0003] The critical current is the basic parameter that reflects the performance of the high-temperature superconducting tape. Accurately testing the critical current value of the high-temperature superconducting tape is the fundamental basis for the calculation and design of superconducting equipment. The "four-lead method" is the most accurate and commonly ...

AI Technical Summary

Problems solved by technology

However, the current test methods can only test short samples, and then use the critical current of the short sample to estimate the critical current value of the long tape (the standard length of commercial products is 100 meters, 200 meters, 400 meters, etc.), which is very important for high temperature ultra- The design and development of guidance equipment bring great potential safety hazards

[0004] Although there is a long-band non-contact measurement technology (ZL03149775.6, application number 201010033688.5), but limited by the test principle and testing means, only a rough judgment can be made on the uniformity of the long-band critical current, and it is impossible to obtain a long-band Accurate critical current value

Utilize long strips wound in a solenoid shape on the barrel test frame (ZL02282203.6), although the high-temperature superconducting long strips can be tested for critical current, but due to the magnetic field generated by winding the long solenoid-shaped strips, the superconducting strips The critical current degrades, and the real critical current value of the long band cannot be measured

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