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Method for winding superconductive magnet

A winding method and technology for superconducting magnets, which are applied in the manufacture of superconducting magnets/coils, magnetic objects, inductors/transformers/magnets, etc., can solve the problem of increasing winding complexity and uncertainty, complex structure, difficult cooling and protection and other issues, to achieve the effect of reducing the twisting force and the influence on the flow capacity, increasing the compactness of the structure, and reducing the difficulty of welding

Inactive Publication Date: 2010-01-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this winding method has higher requirements on the winding device. When winding the strip from the tape reel to the bobbin of the double pie coil, it is often necessary to have at least one tape reel that needs to rotate and revolve around the coil bobbin at the same time. Therefore, the general single-wire double-cake coil winding machine has a cumbersome design and a large volume, and due to the complex movement of the tape reel, it is difficult to maintain the tension of the strip during the winding process, which increases the complexity and uncertainty of winding.
In recent years, with the wide application of superconducting magnets, the winding technology of single-wire double-cake coils for superconducting strips has also been developed and improved. A variety of single-wire double-cake winding machines have been invented, but the structures are complex and all The goal is to achieve the double cake in the above winding direction
Therefore, although the winding quality of the coil is improved, some inherent shortcomings of this winding method cannot be avoided.
First of all, the end of the wire is on the outside of the cake, and due to its lack of fixed support, it is difficult to weld
Secondly, since the contact between the welding point and the magnet is not easy to do well, it is difficult to cool and protect it with conventional contact refrigeration.
Third, the transition circle between the two cakes is the innermost, with the smallest bending radius, and requires a certain in-plane deformation, which may affect the flow capacity of the strip.
Therefore, the existing single-wire double-cake coil winding technology has no substantial progress in improving the coil quality

Method used

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  • Method for winding superconductive magnet

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 As shown, according to the winding method of the present invention, the winding and assembly steps of the solenoid-shaped magnet of the present embodiment are as follows:

[0028] 1. Design and manufacture of double-cake spools: the spools in the double-cake are spool 1 and spool 2 respectively, and spools 1 and 2 have the same contour and concentric design, both of which are processed with red copper. Wherein, the outermost diameter of the bobbin 1 is 56mm, the innermost diameter is 42mm, and the total length is 7mm. The protruding ring 4 of copper on one side of the bobbin 1 has a length of 2 mm, an outer diameter of 48 mm, and an inner diameter of 42 mm. The other side recessed portion 5 of the spool 1 has a length of 2mm, an outer diameter of 56mm, and an inner diameter of 50mm, so that the outer diameter of the spool 2 is 50mm, and the inner diameter is a tight fit of the ceramic protruding ring 4 of 42mm. The outermost diameter of the spool 2 is 5...

Embodiment 2

[0036] Such as figure 1 As shown, according to the winding method of the present invention, the winding and assembly steps of the solenoid-shaped magnet insulated by polyimide tape in this embodiment are as follows:

[0037] 1. The design and manufacture of double cake spools: the spools in the double cake are made of red copper processing spool 1 and spool 2, and the spools 1 and 2 have circular contours and are concentric. The outermost diameter of the spool 1 is 56mm, the innermost diameter is 42mm, and the total length is 7mm. The protruding ring 4 on one side of the spool 1 has a length of 2 mm, an outer diameter of 48 mm, and an inner diameter of 42 mm. The length of the concave portion 5 on the other side is 2mm, the outer diameter is 56mm, and the inner diameter is 48mm, which is used for tight fitting with the protruding ring 4 of the outer diameter 48mm of the bobbin 2 and the inner diameter 42mm.

[0038] 2. Winding double cakes:

[0039] (1) First fix the positi...

Embodiment 3

[0045] Such as image 3 As shown, according to the winding method of the present invention, the winding and assembly steps of the racetrack-shaped magnet of the present embodiment are as follows

[0046] 1. Design and manufacture of double cake spools: the design method is similar to that of embodiment 1, except that the shape of the spool becomes a racetrack shape, the size of the semicircles on both sides is the same as that of the half of the circle in embodiment 1, and the straight part in the middle is a length of 60mm.

[0047] 2. Winding double cakes: the winding process requires strict calculations to control the length error of the strip to not exceed 1mm.

[0048] (1) First fix the position of the spool 8 of one of the double cakes, and clean the inner surface of the strip that needs to be attached to the spool 8 from the end point of the strip, and clean the spool at the same time. The outer surface of 8 is cleaned, and the contact surfaces of the two are welded t...

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Abstract

The invention relates to a method for winding a superconductive magnet, which uses more than two single blocks to wind the two single blocks into a double block by belt material, comprising the following steps of: 1) designing the shapes of spools as required, wherein one side of each spool is provided with a convex ring and the other side of each spool is provided with a concave part; 2) winding the double block: firstly, fixing the position of a single block spool, winding the belt material from an end point to a fixed spool, and welding a contact surface of the belt material and the spool; secondly, synchronously rotating the fixed spool and the belt material, and winding the belt material onto the fixed spool; thirdly, after fixing the total length of the belt material, cutting the belt material and fixing the other single block spool, welding a cutting position of the belt material on the single block spool, synchronously rotating the spools of the two single blocks and winding the belt material from the one spool to the other spool; and finally, when the lengths of the belt material of the two blocks are equal to the number of windings, stopping synchronously rotating, fixing one spool, and horizontally moving and rotating the fixed single block, so that the two single blocks are superposed to form a transition layer; and 3) assembling the magnet: inserting the convex ring of the double block spool into the concave part of the adjoining double block spool. The method can be widely used for winding various superconductive magnets.

Description

technical field [0001] The invention relates to the electrical engineering field of a superconducting magnet, in particular to a winding method of a superconducting magnet. Background technique [0002] In the process of the development of superconducting magnet winding technology, because the traditional solenoid winding method cannot meet the requirements of superconducting magnet winding in many cases, a pie-shaped coil winding method has appeared, which is mainly suitable for winding tape shaped conductors or conductors with square cross-sections. The earliest pie-shaped coils were single-wire single-cake coils. However, the resistance of superconducting magnets mainly comes from the resistance of the connection between the strips. The superconducting magnet assembled with single-wire single-cake coils uses a large number of pies. There are also many welding points between them, which will increase the loss and heat generation of the magnet, which is unfavorable to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/00H01F6/06H01F41/02
Inventor 顾晨凌佳寅韩征和
Owner TSINGHUA UNIV
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