Apparatus for testing bending strain critical performance of superconducting strand

Abstract

The invention discloses an apparatus for testing the bending strain critical performance of a superconducting strand. An upper stress loading rod and a lower stress loading rod are positioned in a sample rod, the upper end of the upper stress loading rod stretches out of the upper end of the sample rod, a dynamic sealing device is arranged at the upper end of the sample rod, the lower end of the lower stress loading rod stretches out of the lower end of the sample rod, the lower end of the lower stress loading rod is connected with a bending test module, the bending test module is fixedly connected with the lower end of the sample rod, an upper current leading wire is connected with a lower current leading wire, the upper current leading wire and the lower current leading wire traverse through the internal of the sample rod, the upper end of the upper current leading wire stretches out of the upper end of the sample rod, the lower end of the lower current leading wire is connected with the bending test module, a supporting rod is positioned in the sample rod, and the lower end of the supporting rod stretches out of the lower end of the sample rod and is fixedly connected with the bending test module. A sample bending stress loading structure has the advantages of novel design, reliable contact at a low temperature, realization of application of a high current, and easiness in operation and no damages to the superconducting strand during sample replacement.

Description

technical field [0001] The invention is a testing device for the critical performance of bending strain of superconducting strands. Background technique [0002] As a kind of clean energy, fusion energy is one of the dream energy of mankind. Tokamak magnetic confinement nuclear fusion device is a reliable device for generating fusion energy, and fully superconducting tokamak is an important guarantee for the continuous operation of fusion reactors. On the basis of the successful establishment and operation of the fully superconducting non-circular cross-section tokemak EAST, China has actively carried out the construction of the International Thermonuclear Experimental Reactor ITER. At the same time, various countries have also started pre-research work on the next generation of fusion reactors. Superconducting cable is an important part of tokamak device, and its technology is the key technology of fusion engineering. Superconducting cables are made by twisting supercondu...

AI Technical Summary

Problems solved by technology

With the development of technology and research, the requirements for magnetic field strength have also increased, and Nb 3 Sn and NbTi are limited by their upper critical field (Hc2), and have gradually been unable to meet the demand

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