JPS60177603A - Superconductive coil - Google Patents

Abstract

PURPOSE:To enhance hardness, and to obtain a superconductive coil not to generate deterioration even when the coil is used for a long period by a method wherein when tube type electrically insulating materials are to be fitted on a slender superconductor interposing an interval between them to enhance cooling performance thereof, the insulating materials thereof are formed of a glass epoxy laminate having high Young's modulus. CONSTITUTION:Tube type electrically insulating materials 3a are fitted on a slender superconductor 2 interposing the prescribed interval between them to form a wire for superconducting coil. At this construction, a laminate of large Young's modulus such as glass epoxy, etc. is used for the insulating materials 3a, and made to surround the superconductor 2 fastening the conductor to some extent. At this time, when the superconductor 2 is not a round shape but is a square shape, the section of the insulating material 3a is formed also in a square shape conforming thereto. Accordingly, hardness of the winding is enlarged, and the coil is stabilized.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a superconducting coil. More specifically, the present invention relates to a superconducting coil, and more specifically, a superconducting wire comprising a long and thin conductor with conductor insulation provided by exposing a part of the conductor. This relates to a superconducting coil formed by winding.

[Prior art]

Conventionally, there have been devices of this type shown in FIG. The superconducting wire used for the winding part l shown in Fig. 1 is wrapped around a long and slender superconducting conductor with an insulating tape 3 in a helical shape, as shown in Fig. 2, and the exposed part of the conductor is It was also necessary to ensure electrical insulation between the superconducting conductors.

This type of superconducting coil is cooled by immersing it in liquid helium, which is a refrigerant, and in order to improve cooling performance, the superconducting conductor is exposed directly to the refrigerant as much as possible, quickly cooled from room temperature to extremely low temperature, and then energized after cooling. It is necessary to promptly remove heat generated by internal turbulence and heat generated by alternating current loss, thereby ensuring a stable energized state. The conductor insulation 3 shown in FIG. 1 is for obtaining the above performance. As the conductor insulation 3, a flexible polymer compound tape was used because it could be easily wrapped around the superconducting conductor λ.

However, since conventional superconducting coils were constructed as described above, since the conductor insulation J is flexible, the rigidity of the winding as a whole is weak, and after long-term use, the conductor insulation 3 loosens, resulting in stable current flow. The disadvantage was that it was difficult to carry out.

[Summary of the invention]

The purpose of this invention is to eliminate the above-mentioned drawbacks of the conventional ones. By making the conductor insulation into a tube-like material with high rigidity, it is possible to create a superconducting conductor with good cooling characteristics and mechanical stability. It provides coils.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

In the figure, the conductor insulation 3a, which is adhered to the superconducting conductor at intervals, is a tube-shaped material made of a material with a large Young's modulus, has a small amount of thermal shrinkage, has little dimensional change over time, and has mechanical strength. It is desirable to use an electrical insulating material that also has characteristics such as large size. For example, a round tube made of glass epoxy laminate is suitable. The superconducting conductor is inserted into the conductor insulation 3a with a certain degree of tightness. The superconducting conductor may not be round but may be a superconducting conductor 2a having a rectangular cross section as shown in FIGS.

FIGS. 6 and 7 show another embodiment, in which the conductor insulation 3C applied at intervals to the superconducting conductor core a has a C-shaped cross section with notches 13 formed in the length direction. , made of a material with a large Young's modulus.

With the above configuration, in addition to producing seedlings similar to the previous embodiment, the superconducting conductor 2a can be seen from the lateral direction of the superconducting conductor 2a.
4 and insert the conductor insulation 3C into the superconducting conductor
It has the advantage that it can be applied to a.

〔Effect of the invention〕

As described above, this invention uses a rigid material with good mechanical properties as the conductor insulation material, so it is possible to create a superconducting coil that has high winding rigidity and is stable with little deterioration even after long-term use. can get.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional superconducting coil, Fig. 2 is a side view of a conventional superconducting wire, Fig. 3 is a perspective view of a main part of an embodiment of the present invention, and Fig. V is a modification of the third factor. 3 is a cross-sectional view of the one shown in FIG. V, FIG. 6 is a perspective view of another embodiment of the invention, and FIG. 7 is a cross-sectional view of the one shown in FIG. 6. l... superconducting winding, λa-Φ superconducting conductor 1.7a,
3b, 3C...Conductor insulation, 13...Notch. In each figure, the same reference numerals indicate the same or corresponding parts. Figure 1 Helmet 2 Figure χ3 Figure Atsushi 4 Figure %5 Figure 7 Figure Suha

Claims (1)

[Claims] (1) A superconducting coil formed by winding tube-shaped conductor-insulated superconducting conductors at intervals. (g) The superconducting coil according to claim 1, which is provided with conductor insulation having a notch in the length direction. (3) The superconducting coil according to claim 1, wherein the conductor insulation is a glass epoxy laminate.