JPH0530329Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a superconducting power storage device (hereinafter referred to as SMES).
It is abbreviated as. ) regarding.

[Conventional technology]

SMES stores electric power in the form of magnetic field energy by passing a persistent current through a superconducting coil, and in order to support the huge electromagnetic force that normally acts on the coil,
As shown in Fig. 4, a torus-shaped cavity 2 is inside the rock 1.
is formed, and various devices including superconducting coils are installed inside this cavity 2. Also, SMES
uses a superconducting coil cooled to an extremely low temperature (usually around 4K) using a coolant such as liquid helium.
As shown in FIGS. 5 and 6, the superconducting coil 3 is enclosed in a helium container, and in order to reduce heat intrusion into the superconducting coil 3 as much as possible, the helium container 4 is placed in a vacuum container 5 and the surroundings are sealed. It has a vacuum insulation effect. And superconducting coil 3
The strong electromagnetic force (centripetal force) and dead weight generated by the rock are transmitted to the rock 1 via the centripetal force supporting member 6 and the dead weight supporting legs 7, respectively. In addition,
In some cases, a thermal shield layer 8 is provided between the helium container 4 and the vacuum container 5 to reduce radiant heat intrusion.

[The problem that the idea aims to solve]

By the way, in such an SMES, as shown in FIG. 7, the superconducting coil 3 has a superconducting coil conductor 9 wound in a donut shape (25 return windings in this figure).
Since the superconducting coil conductor 9 is formed as
needs to be fixed. However, with this method, there is a problem that the position of the superconducting coil conductor 9 shifts due to vibrations caused by transportation during manufacturing, and when the position of the superconducting coil conductor 9 shifts, the electromagnetic force (centripetal force) The helium container 4 may be destroyed by the electromagnetic force applied to the helium container 4. In addition, the weight of the superconducting coil 3 is transmitted to the inside of the helium container 4 and the side plate side by the key (or spacer) 10, albeit locally, and as a result, it is necessary to tighten the load conditions on the helium container 4. It was hot.

The present invention was developed in view of these problems, and it is possible to reliably transmit the electromagnetic force and self-weight of the superconducting coil to the rock via the centripetal force support member and the self-weight support legs, thereby improving the safety and security of the helium container. The present invention aims to provide a superconducting power storage device that can improve reliability.

[Means to solve the problem]

In order to solve the above problems, the present invention encapsulates a superconducting coil formed by winding a superconducting coil conductor in a donut shape in a helium container, and inserts the helium container into the rock via centripetal force supporting members and self-weight supporting legs. In a superconducting power storage device installed in a cavity, the superconducting coil conductors in the portions where the electromagnetic force and self-weight of the superconducting coil act are each bundled with coil fixing bands having a substantially U-shape, and both ends of these coil fixing bands are placed on the open side. is fixed to the helium container facing the centripetal force supporting member and the self-weight supporting leg.

[Effect]

In the present invention, the superconducting coil conductors at the portions where the electromagnetic force and dead weight of the superconducting coil act are each bundled with a coil fixing band having a substantially U-shape, and both ends of these coil fixing bands are connected to the centripetal force supporting member and the dead weight supporting leg. By fixing it to the helium container with the superconducting coil facing toward the helium container, the superconducting coil comes into close contact with the outer inner surface of the helium container, so the electromagnetic force and self-weight of the superconducting coil can be reliably transmitted to the rock via the centripetal force support member and the self-weight support leg. .

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 to 3 are diagrams showing one embodiment of the present invention, where Figure 1 is a schematic diagram of SMES, Figure 2 is an enlarged view of the main part of Figure 1, and Figure 3 is the same as in Figure 2. It is a sectional view taken along the line. As shown in FIGS. 1 and 2, the portions of the superconducting coil 3 on which electromagnetic force and self-weight act are bound together by coil fixing bands 11, 11, respectively, and the superconducting coil 3 is sealed in a helium container 4. The coil fixing band 11 has a substantially U-shape as shown in FIG.
It is fixed by bolts 13 to the side surface of a fixing band mount 12 provided on the outer inner surface of the helium container 4 toward the self-weight supporting leg 7 .

In this way, the superconducting coil conductors 9 in the portions of the superconducting coil 3 where the electromagnetic force and self-weight act are bundled with the substantially U-shaped coil fixing bands 11, 11, and both ends of these coil fixing bands 11, 11 are connected with the open side By fixing the superconducting coil 3 to the fixing band mount 12, which is a part of the helium container 4, toward the centripetal force support member 6 and the self-weight supporting leg 7, the superconducting coil 3 is fixed to the fixing band mount 12, that is, helium, as shown in FIG. Because it is in close contact with the outer inner surface of the container 4,
The electromagnetic force and dead weight of the superconducting coil 3 can be reliably transmitted to the bedrock 1 via the centripetal force supporting member 6 and the dead weight supporting legs 7. Therefore, there is no risk that the helium container 4 will be destroyed by electromagnetic force, and the weight of the superconducting coil 3 will not act locally on the inside of the helium container 4 or on the side plate side. Safety and reliability can be improved.

[Effect of idea]

As explained above, according to the present invention, the electromagnetic force and self-weight of the superconducting coil can be reliably transmitted to the rock via the centripetal force supporting member and the self-weight supporting legs,
The safety and reliability of helium containers can be improved. Furthermore, since the superconducting coil does not shift in position during manufacture, the superconducting coil can be easily assembled, and manufacturing costs can be reduced.

[Brief explanation of the drawing]

Figures 1 to 3 are diagrams showing one embodiment of the present invention, in which Figure 1 is a schematic diagram of SMES, Figure 2 is an enlarged view of the main part of Figure 1, and Figure 3 is the same as in Figure 2. It is a sectional view taken along the line. In addition, Figures 4 to 7 are diagrams for explaining the prior art, in which Figure 4 is a conceptual diagram of SMES, Figure 5 is a schematic diagram of SMES, and Figure 6 is viewed from the - line arrow in Figure 5. The sectional view, FIG. 7, is an enlarged view of the main part of FIG. 6. 1... Bedrock, 2... Cavity, 3... Superconducting coil, 4... Helium container, 5... Vacuum container, 6...
... Centripetal force support member, 7 ... Weight support leg, 9 ... Superconducting coil conductor, 11 ... Coil fixing band, 1
2...Fixed band mounting base.

Claims (1)

[Scope of utility model registration request] A superconducting power storage device in which a superconducting coil formed by winding a superconducting coil conductor in a donut shape is enclosed in a helium container, and this helium container is installed in a cavity in a bedrock via a centripetal force supporting member and self-weight supporting legs, The superconducting coil conductors in the portions of the superconducting coil on which electromagnetic force and dead weight act are each bundled with coil fixing bands having a substantially U-shape, and both ends of these coil fixing bands are placed with the open sides facing the centripetal force supporting member and the dead weight supporting legs. A superconducting power storage device characterized by being fixed in a helium container.