JPS60170274A - Superconductive device - Google Patents

Abstract

PURPOSE:To cool each superconductive apparatus and connecting wires in a well-balanced manner by installing a cooling device between a cooling pipe typing a plurality of the superconducive apparatus. CONSTITUTION:A cooling device 5 is connected between a cooling pipe 4 connecting a plurality of superconductive apparatus 1, 2 and internalizing superconductive wires 3. The cooling device 5 feeding a refrigerant for cooling the superconductive wires 3 is mounted between the cooling pipe 4 having triple pipe structure fixing and cooling the superconductive wires 3 connecting the immersion cooling type superconductive apparatus 1 and a current introducing terminal 2 regarded as one of the superconductive apparatus. Accordingly, the refrigerant is divided into two sections in the directions of the superconductive apparatus 1, 2 and flows through a delivery path 9 for the refrigerant in the cooling pipe 4, and is recovered through a return path 8, thus cooling the superconducting apparatus and the superconductive wires in a well-balanced manner.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a superconducting device used in a nuclear fusion device 6, an energy storage device, and the like.

[Technical background of the invention and its problems] In energy storage devices and nuclear fusion devices using superconducting coils, the connections between the power source and the superconducting equipment and between the superconducting equipment may be long distances.

If a normal conductor (copper or aluminum) is used for this connection, the power loss will be large, and even if the loss of the equipment is reduced, the overall loss will not be sufficiently reduced. The best way to deal with this problem is to use superconducting wire as the conductor. Forced cooling and immersion cooling can be considered for cooling superconducting equipment, but if the current introduction terminal is treated as one superconducting equipment as in the example above, each superconducting equipment installed at a separate location can be connected between them. When superconducting wires are cooled by a single cooling device, superconducting equipment close to the cooling device is sufficiently cooled due to loss in the superconducting wire or heat intrusion in the superconducting wire, but superconducting devices far from the cooling device are cooled sufficiently. This creates an imbalance in which the equipment is not cooled sufficiently. In addition, the system must be operated while monitoring the cooling status of equipment installed at a distant location.

[Object of the Invention] An object of the present invention is to provide a superconducting device in which a plurality of superconducting devices can be uniformly cooled once.

[Summary of the Invention] In order to achieve the above object, the superconducting device of the present invention includes: - connecting a plurality of superconducting devices and connecting an intermediate cooling device of a cooling pipe in which a superconducting wire is installed; The terminal end of the superconducting equipment and the superconducting equipment should be positioned at approximately the same distance from the cooling device, and be rubbed to ensure balanced cooling.

Examples of the invention] An embodiment of the present invention is shown in FIGS. 1 and 2. FIG.

In Figure 1, 1 is an immersion-cooled superconducting device, 2 is a current introduction terminal that is considered a type of superconducting device, 3 is a superconducting wire that connects both devices, and 4 is a triplex that fixes and cools the superconducting wire 3. A cooling pipe with a tube structure is shown, and 5 is a superconducting wire 3.
6 is a power supply device for supplying power to the superconducting devices 1 and 2.

FIG. 2 shows a cross section of the cooling pipe 4 taken along the line .

In this figure, 7 is a vacuum insulation section, 8 is a refrigerant return path, and 9 is a vacuum insulation section.
10 is an outgoing path of the refrigerant, and 10 is an insulating support for fixing the superconducting wire 3.

In the superconducting device configured as above, the cooling device 5 was installed approximately halfway between the superconducting devices 1 and 2 to cool the connecting wire 3, so the refrigerant was distributed 2 minutes in the direction of the superconducting devices 1 and 2. The refrigerant flows through the outgoing path 9 of the cooling pipe 4 and is recovered through the incoming path 8. In this way, by cooling the connecting superconducting wire 3 and configuring it in a shortened shape, it becomes possible to deal with the above-mentioned problems. In addition, a cooling pipe 4 for cooling the superconducting wire 3 and superconducting equipment 1, 2
The refrigerant in the cooling pipe 4 can be cooled either by forced circulation or by immersion cooling. Further, the refrigerant between the two may be mixed or separated. Note that when a conductor for forced cooling is used for the superconducting wire 3, a double pipe structure is sufficient for the cooling pipe.

In this case, the outward path of the refrigerant is inside the superconducting wire, and the return path is through the inner tube supporting the superconducting wire.

When using superconducting wires to connect relatively long distances, one cooling device is used to cool the superconducting wires.
Rather than installing one at the end, as in this embodiment, installing one near the middle will shorten the superconducting wire to be cooled isometrically, so it can be expected that the cooling effect will be improved. In other words, since it is possible to cool superconducting equipment with a refrigerant having a relatively uniform temperature, the effect of preventing transition to normal conductivity is exhibited.

This method can be applied not only to forced cooling but also to immersion cooling.

〔Effect of the invention〕

As explained above, in the superconducting device of the present invention, since the cooling device is installed in the middle of the cooling pipe that connects a plurality of superconducting devices, each superconducting device and the connecting wire can be cooled well.

[Brief explanation of drawings]

FIG. 1 is a system diagram of a superconducting device according to an embodiment of the present invention, and FIG.
The figure is a sectional view taken along line 11-4 in FIG. 1.2...Superconducting equipment 3. ...Superconducting wire 4...Cooling pipe 5...Cooling device 7...Vacuum insulation part 8...Refrigerant return path 9...Refrigerant outward path 10...Support

Claims (1)

[Claims] fl) A system comprising: a plurality of superconducting devices; a cooling pipe that connects these superconducting devices and has a superconducting wire therein; and a cooling device connected to the middle of the cooling pipe. superconducting device. (2) The cooling pipe is a Miura pipe, and the superconducting wire is stored inside the innermost pipe to serve as the outgoing route for the refrigerant produced by cooling device 1, and the outermost pipe is connected to the inside of the middle pipe. 2. The superconducting device according to claim 1, wherein a space between the tubes is a return path for the refrigerant, and a heat insulating layer is provided between the outside of the intermediate tube and the inside of the outermost tube.