Winding method of a jointless high-temperature superconducting four-cake coil

Abstract

A method for winding a jointless high-temperature superconducting four-cake coil, the steps are as follows: 1), the four-cake coil is named from right to left as No. 1, No. 2, No. 3 and No. 4; The strip is wound on the transition reel, and the middle 2 / 4 strip of the main reel is wound on the right frame of the double cake coil to complete the winding of the second cake; 2), the strip on the transition reel Carry out winding to complete the winding of the No. 1 cake; 3), wind the middle 3 / 4 strip of the main coil on the left transition frame of the double cake coil, and wind the remaining 4 / 4 strip of the main coil On the left frame of the double cake coil, complete the winding of the fourth cake; 4), rewind the 3 / 4 section of the strip wound on the left transition frame on the left frame of the double cake coil, and complete the third Cake winding; 5), install the wound left frame on the right frame, screw the two frames, and tension the strip between the second and third cakes, and complete the four-cake winding; the principle of the invention The invention is simple, practical, reliable, and easy to operate, can reduce the number of superconducting joints, and realize variable diameter winding at the same time, and can be widely used in winding high-temperature superconducting uniform magnets.

Description

technical field [0001] The invention belongs to the technical field of high-temperature superconducting coil winding, and in particular relates to a winding method of a jointless high-temperature superconducting four-cake coil. Background technique [0002] Due to the advantages of high critical temperature, high current density, and low operating cost, high-temperature superconductivity has broad prospects in the fields of electric power and medical strong magnetic fields related to lightweight superconducting magnets. [0003] Due to the limitation of preparation technology, the performance of high-temperature superconducting strips currently used in commercial applications has certain mechanical brittleness, which is easily damaged, and the performance declines sharply under bending with a large curvature. Limited by the performance of high-temperature superconducting strips, in order to ensure the current and the number of turns, the high-temperature superconducting coil...

AI Technical Summary

Problems solved by technology

[0003] Due to the limitation of preparation technology, the performance of high-temperature superconducting strips currently used in commercial applications has certain mechanical brittleness, which is easily damaged, and the performance declines sharply under bending with a large curvature. Limited by the performance of high-temperature superconducting strips, in order to ensure the current and the number of turns, the high-temperature superconducting coils currently used in the market generally adopt a series-parallel combination structure wound into double cake coils, but the joint resistance problem caused by the series-parallel structure is indeed a fatal flaw that affects the stability of the coil performance

The increase of superconducting joints also limits the application of high-temperature superconducting in closed-loop magnets

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