Quenching detection device and method for high-temperature superconducting magnet

Abstract

The invention discloses a quenching detection device and method for a high-temperature superconducting magnet. The quenching detection device comprises a fiber bragg grating string FBG1, a fiber bragggrating string FBG2, a data acquisition module and a data processing module, wherein a plurality of fiber gratings are arranged on the FBG1 and the FBG2; the fiber bragg gratings can sense tiny deformation and temperature rise of the magnet due to quench in time, and are sensitive to the temperature and strain of the high-temperature superconducting magnet; the FBG1 and the FBG2 are wound on thesurface of the high-temperature superconducting magnet in parallel, the FBG1 is attached to the surface of the high-temperature superconducting magnet, and the FBG2 is attached to the surface of the high-temperature superconducting magnet by using mucilage glue, so that the temperature and the strain of each position of the high-temperature superconducting magnet can be rapidly detected at the same time; when the magnet has a local fault, due to accumulation of heat in a local area, the area can quickly change in temperature and strain; and although the voltage of the magnet at the moment is not changed, the fault of the magnet can be detected through the change in temperature and strain, so that the quench detection speed of the high-temperature superconducting magnet is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of quench detection of high temperature superconducting magnets, and more specifically relates to a quench detection device and method of high temperature superconducting magnets. Background technique [0002] High-temperature superconducting magnets are currently one of the means to generate high-intensity magnetic fields, and high-temperature superconducting magnets have unique advantages such as stable and durable magnetic fields, low loss, and convenient use. It has wide and important applications. However, superconducting magnets are more difficult and complex to develop than conventional magnet designs. Since the electromagnetic properties of superconducting materials are very complex, and their superconducting properties are closely related to factors such as operating current, ambient temperature, and magnetic field, when any of the above factors exceeds a critical value, it is very easy to cause a ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a quench detection device and method for a high temperature superconducting magnet to solve the problem of quenching of a high temperature superconducting magnet due to quench detection based on voltage changes in the prior art. In the process, the voltage rising speed is slow, which leads to the technical problem of slow detection speed

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