JPS59151404A - Superconductive coil - Google Patents

Abstract

PURPOSE:To improve the workability at fabrication of coils as well as to increase the insulation properties of the coils by using spacers to which spacer plates are stuck as insulating sheets for the superconductive coil. CONSTITUTION:The superconductive coil is composed of a superconductive wire wound plural times and spacers for insulating each turn from others. This spacer 20 of the superconductive coil is composed of an insulating sheet 21 and rectangular spacer plates 22 stuck to both surfaces of said sheet 21 alternately. By this constitution, a plurality of spacer plates 22 are connected with the insulating sheet 21 and are prevented from displacing when coil-winding. Accordingly, the assembly is improved and longitudinal planes of the spacers 20 are shielded by the insulating sheet 21, thereby raising the insulation properties.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a superconducting coil constructed by winding a so-called superconducting wire whose resistance is zero near liquid helium humidity.

[8# of invention! Background and Problems] Conventional superconducting coils will be explained with reference to FIGS. 1 to 4. The ν1 diagram shows a superconducting coil cooled to near liquid helium temperature. 1 is a helium container containing a coil body and its refrigerant such as liquid helium; 2 is a cold brew; 3 is a coil body around which superconducting wire is wound; and 4 is a frame of the coil. Insulated container to insulate from outside room temperature, for current supply! A superconducting coil is always equipped with a conductor and the like, but they are omitted here. Figures 2 and 3 are similar to Figure 1. FIG. 3 is a sectional view of the coil body 3 shown in the figure. In these figures, 5.6 is the coil mouthpiece, 10 is the superconducting wire, 11 is the frame spacer, 12 is the interlayer spacer, 1
3 is an inter-turn spacer. These spacers are insulators such as laminates. An example of the interlayer spacer 12 is
As shown in the figure.

When manufacturing a conventional superconducting coil with such a structure, the superconducting wire 10 was wound while sandwiching the frame spacer 11, interlayer spacer 12, interturn spacer 13, etc., but at that time, these spacers moved. Unfortunately, the work was extremely difficult. Furthermore, in the completed coil, the insulation of the adjacent superconducting wires was influenced by the creeping surface of the spacer and was insufficient.

[Purpose of the invention]

An object of the present invention is to provide a superconducting coil that is easy to work with during production and has excellent line-to-wire edge property.

[Summary of the invention]

In order to achieve the above object, the superconducting coil of the present invention has the following features:
The superconducting wire is provided with a superconducting wire wound a plurality of times, and a spacer having insulating plates attached at predetermined intervals on both sides of an insulating sheet and interposed between adjacent superconducting wires.

[Embodiments of the invention]

FIG. 5 shows a spacer used in a superconducting coil according to an embodiment of the present invention. In other words, the spacer 20 has a structure in which strip-shaped spacer plates 22 are attached to both sides of a P-edge sheet 21.

FIG. 6 shows another embodiment in which strip-shaped spacer plates 22 are pasted on both sides of an insulating sheet 210. The attachment locations are alternately on the front and back sides of the insulating sheet 210.

In these embodiments, polyethylene film, polyimide film, etc. can be used as the insulating sheet 21. The spacer plate 22 may be a laminated material or a molded material in which paper or glass cloth is fixed with phenol resin, epoxy resin, or the like. In addition, the insulation sheet 21
It is preferable to use an extremely low mixed epoxy resin for bonding the spacer plate 22 and the spacer plate 22 together.

Such spacers 20 include frame spacers, interlayer spacers,
It can be applied as either an inter-turn spacer.

In this type of spacer 20, a large number of spacer plates 22 are quickly connected by one insulating sheet 21, so that they do not move during coil winding. Spacer 2
Since the creeping surface of 0 is blocked by the insulating sheet 21, insulation properties are improved. Furthermore, since the coolant enters the rectangular parallelepiped or horizontal space surrounded by the edge sheet 21, the spacer plate 22, and the superconductor #10, there is no need for cooling to be affected by the F11.

〔Effect of the invention〕

As explained above, in the superconducting coil of the present invention, since a spacer in which a spacer plate is attached to a P-edge sheet is used, the workability during coil manufacturing is improved and the insulation properties of the coil are improved.

[Brief explanation of the drawing]

tJ! , Figures 1 to 3 show conventional superconducting coils, where Figure 1 is a partially cutaway perspective view, Figure 2 is a plan sectional view of the coil body, and Figure 3 is a cross-sectional view of the coil body. ! J is a longitudinal cross-sectional view along the 11 bonds in Figure 2,
FIG. 4 is a perspective view of a spacer used in a conventional superconducting film, FIG. 5 is a perspective view of a spacer used in a superconducting film according to an embodiment of the present invention, and FIG. 6 is a perspective view of a spacer used in a superconducting film according to another embodiment of the present invention. FIG. 2 is a perspective view of a spacer used in a coil. 3... Coil body, 10... Superconducting wire, 20...
Spacer 21...insulating sheet, 22...spacer plate. Agent: Patent Attorney Noriyuki Chika (Nika 1) No.
1 @ / 2 Fig. 2 34 Mi 3 〆Zz turtle ρ θ Fig. 3 ρ Mi /ρ 21t1 Geni, disaster 2 3- / 22 JP-A-59-151404 (3) Fig. 4 11]

Claims (1)

[Claims] It is characterized by comprising a superconducting wire wound a plurality of times, and a spacer interposed between adjacent layers of the top iP superconducting material, which are made by pasting insulating plates on both sides of an absolute V sheet at predetermined intervals. superconducting coil.