JPH03190109A - Superconducting coil device - Google Patents

Abstract

PURPOSE:To increase the cooling surface of a superconducting wire, and to improve stability in superconducting property by a method wherein the inter-turn spacers of the superconducting wire is formed into block-like shape, and the block-like inter-turn spacers are connected with each other using a string at regular intervals. CONSTITUTION:Interturn spacers 5 are formed in block-like shape, each of the block-shaped interturn spacers 5 is connected by a string leaving a fixed interval. The width of the interturn spacers 5 is equal to interlayer spacers 3, and the interturn spacers 5 and the interlayer spacers 3 are arranged at the same position in the direction in block-like shape, the cooling area of a superconducting wire 2 is increased by about 50% when compared with the continuous type interturn spacer heretofore in use, and the stability in superconductivity of a superconducting coil 1 can be improved by about 50%.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a superconducting coil device, and more specifically, to a superconducting coil device in which interlayer spacers and interturn spacers are inserted.

[Prior Art] Figures 6 and 7 show a conventional superconducting coil disclosed in, for example, Japanese Patent Application Laid-open No. 124403/1983, in which a superconducting wire (2)
An interlayer spacer (3) and an interturn spacer (4) are inserted into the superconducting coil (1), which is wound with a superconducting coil (1). In manufacturing the superconducting coil (1), superconducting wire (2
), when winding the superconducting wire (2), inter-turn spacers (4) are inserted between turns and inter-layer spacers (3) are inserted between layers.

With the above configuration, the superconducting coil (1) is normally immersed and cooled with liquid helium. In this case, if space for liquid helium is secured within the superconducting coil (1), the superconducting wire (2) is directly cooled by liquid helium, improving the stability of the superconducting coil (1). Therefore, the space between the interlayer spacers (3) serves as a space for liquid helium to improve superconducting stability.

[Problem to be solved by the invention] Since the conventional superconducting coil device is configured as described above, in order to manufacture a more compact superconducting coil,
If the current density of the superconducting wire is increased in order to increase the current density of the superconducting coil, the area for cooling the liquid helium is small (therefore, a sufficient cooling effect cannot be obtained and the stability of the superconductor deteriorates).

Another drawback was that bubbles from evaporated liquid helium accumulate between the interlayer spacers, further deteriorating the superconducting stability.

This invention was made to solve the above-mentioned problems, and it increases the cooling area of the superconducting wire, secures a cooling channel for bubble removal, improves superconducting stability, and improves manufacturing efficiency. The object of the present invention is to obtain a superconducting coil device that can also improve performance.

[Means for Solving the Problems] In a superconducting coil device according to a first aspect of the present invention, spacers between turns of a superconducting wire are shaped like blocks.

Moreover, in the superconducting coil device according to the second invention, the block-shaped inter-turn spacers are connected by strings.

[Function] In the first invention, since the inter-turn spacer has a block shape, the cooling area of the superconducting wire becomes large.

In the second invention, since the inter-turn spacers are connected by strings, in addition to the effect of the first invention, there is no need to adjust the block spacing each time the coil is manufactured.

[Embodiment] FIG. 1 shows an embodiment of the first invention, in which reference numerals (1) to (3) are the same as in FIG. The inter-turn spacer (5) has a block shape, its width is the same as that of the inter-layer spacer (3), and the inter-turn spacer (
5) and the interlayer spacer (3) are arranged at the same position in the coil winding direction. (6) indicates a vertical cooling channel.

With the above configuration, since the inter-turn spacer (5) is made into a block shape, the cooling area of the superconducting wire (2) is increased by about 50% compared to the conventional continuous inter-turn spacer, and the superconducting stability of the superconducting coil (1) is improved. is improved by about 50%.

In addition, by arranging the inter-turn spacer (5) at the same position as the interlayer spacer (3), a vertical cooling channel (6) is created, which makes it easier to remove bubbles formed by evaporation of liquid helium, making the superconductor more conductive. Improved stability.

FIG. 2 shows an embodiment of the second invention, in which block-shaped inter-turn spacers (5) are connected to each other at regular intervals by threads or strings (referred to as strings).

In addition, the same reference numerals as in FIG. 1 indicate the same parts.

With the above configuration, in addition to the effect of the one shown in FIG. 1, the block-shaped inter-turn spacers (5) are connected to each other at a constant interval, so it is possible to manufacture the fill without adjusting the block spacing each time. can.

In this case, the inter-turn spacer (5) is shown in Figs.
The one shown in Figure 5 can be considered. That is, as shown in FIG. 3, a groove (8a) is formed in the block (5), and this groove (
Pass the string (7) through 8a) and fix with adhesive. Also,
As shown in FIG. 4, a hole (8b) is made in the prong (5), and the string (7) is passed through the hole (8b) and fixed with adhesive. Alternatively, as shown in Figure 5, four plates are glued together to form a block (5), and a string (7) is inserted into the square hole (8c).
Pass through and secure with adhesive.

[Effects of the Invention] As described above, according to the first aspect of the present invention, since the inter-turn spacer of the superconducting wire is made into a block shape, the cooling area of the superconducting wire is increased, and the superconducting stability is improved.

Additionally, vertical cooling channels can also be secured, which has the effect of further improving superconducting stability.

According to the second aspect of the present invention, since the block-shaped inter-turn spacers are connected to each other at regular intervals by strings, in addition to the above-mentioned effects, there is an effect of improving the manufacturability.

[Brief explanation of drawings]

FIG. 1 is a partially sectional main part perspective view of an embodiment of the first invention;
Fig. 2 is a partially cross-sectional main part perspective view of the second invention, Figs. 3 to 5 are partially modified perspective views of Fig. 2, respectively, and Fig. 6 is a partially perspective view of a conventional superconducting coil device. Figure 7 is the 6th
It is a partially enlarged perspective view of the figure. (1)...Superconducting coil, (2)...Superconducting wire, (
3)... Spacer between III's 5)... Spacer between turns, (7)... String. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] (1) A superconducting coil device comprising a block-shaped inter-turn spacer inserted into a superconducting coil formed by winding superconducting material. (2) The superconducting coil device according to claim (1), wherein the inter-turn spacers are connected to each other by a string.