Quench detection device and quench detection method for uninsulated high-temperature superconducting coil

Abstract

The invention provides a quench detection device and a quench detection method for an uninsulated high-temperature superconducting coil, the quench detection device comprises a plurality of uninsulated high-temperature superconducting coils and a plurality of magnetic field measuring devices, wherein each magnetic field measuring element comprises a magnetic field measuring coil or a magnetic field measuring device; the magnetic field measuring devices are arranged on the central axis of the one or more non-insulated high-temperature superconducting coils and in the surrounding space of the one or more non-insulated high-temperature superconducting coils; and the magnetic field measuring coils are arranged inside, outside or on the surface of one or more non-insulated high-temperature superconducting coils. Based on the principle of induced magnetic field attenuation during quench of the non-insulated high-temperature superconducting coil, the corresponding measuring device and method are designed, and quench of the non-insulated high-temperature superconducting coil is effectively monitored. According to the invention, the problem of difficult quench detection of the non-insulated high-temperature superconducting coil and the magnet is solved, and rapid and effective quench detection can be carried out on the non-insulated high-temperature superconducting coil, which is a key step for quench protection of the non-insulated high-temperature superconducting coil.

Description

technical field [0001] The invention relates to the field of superconductivity, in particular, to a quench detection device and a quench detection method of an uninsulated high temperature superconducting coil. Background technique [0002] The second-generation high-temperature superconducting tape is a coated superconductor produced by the method of multilayer lamination packaging using vacuum coating technology. The thickness of the superconducting tape is generally 50-300 microns, and the width is generally 4-12 mm. Its typical structure is as follows: figure 1 Shown: the thickness of the superconducting layer is usually 1 to 3 microns, and it is coated on a base tape with a thickness of about 50 microns by vacuum coating technology. Therefore, the second-generation high-temperature superconducting tape is a tape-like structure with an ultra-high aspect ratio. The baseband and protective layer of the second-generation high-temperature superconducting tape are various m...

AI Technical Summary

Problems solved by technology

However, in theory and practice, although the non-insulated high-temperature superconducting coil has relatively higher thermal stability, it also has the possibility of quenching and burning the strip.

Images