Method for winding joint-free high-temperature superconducting four-cake coil

Abstract

The invention discloses a method for winding a joint-free high-temperature superconducting four-cake coil. The method comprises the following steps of: 1) naming the four-cake coil as cakes I, II, IIIand IV from right to left; winding a 1 / 4 section of strip at the head part of the main wire coil on the transition wire coil, and winding a 2 / 4 section of strip in the middle of the main wire coil ona right side framework of the double-cake coil to finish winding of the second cake; 2) winding the strip on the transition wire coil to finish the winding of the cake I; 3) winding the middle 3 / 4 section of strip of the main wire coil on the left side transition framework of the double-cake coil, and winding the rest 4 / 4 section of strip of the main wire coil on the left side framework of the double-cake coil to finish the winding of the fourth cake; (4) rewinding 3 / 4 sections of strips wound on the left transition framework on the left framework of the double-cake coil, and completing winding of a third cake; 5), installing the wound left side framework on the right side framework, screwing the two frameworks, tensioning the strip between the second cake and the third cake, and completing winding of the fourth cake. The principle is simple, practical, reliable and convenient to operate, the number of superconducting joints can be reduced, variable-diameter winding is achieved, and the method can be widely applied to winding of 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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