JPH0456105A - Superconductive magnet device holding mechanism - Google Patents

Abstract

PURPOSE:To avoid concentrating a stress to a part of a superconductive magnet device holding mechanism by hooking up load holding members and by preparing a holding part for holding a superconductive magnet and load holding member. CONSTITUTION:On the upper wall part of a helium container 13 a holding part 19 is prepared so as to divide the upper wall into two, and round this holding part 19 and the bottom curved surface of a superconductive magnet 14 the first holding member 15 is hooked up. This holding member 15 and the holding part 19 hold the superconductive magnet 14. On the upper wall part of a nitrogen shield 12 a holding part 18 is prepared having the same structure as that of the holding part 19, and further to this holding part 18 and the bottom curved surface of the container 13 the second holding member 16 is hooked up in the same manner as the holding member 15. This holding member 16 is made of the same material as that of the holding member 15. With this holding member 16 and the holding part 18 the container 13 is held.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Industrial Application Field) This invention relates to a support mechanism used for supporting a superconducting magnet or the like in a superconducting magnet device.

(Prior art) Superconducting magnet devices are used at extremely low temperatures where they exhibit superconducting properties, so they have a structure in which the superconducting magnet is held in a helium container filled with liquid helium as a coolant. A nitrogen shield is provided on the outside of the tank, and an outer tank is provided on the outside of the nitrogen shield. Liquid nitrogen is supplied between the helium container and the nitrogen shield, and a vacuum is maintained between the nitrogen shield and the outer tank.

In this case, it is necessary that the superconducting magnet, helium container, etc. be supported by a suitable support mechanism.

Conventionally, as such a support mechanism, one shown in FIG. 3 has been used. That is, for example, a support body 2 is provided on a superconducting magnet (coil) 1 as an object to be supported, and a fixing part 4 is attached to an outer tank. A superconducting magnet 1 as an object to be supported is supported by a FRP load support material 6 .

The position of the supported object is adjusted by a length adjusting screw 7.

However, in such a method, there is a risk that the stress force will be concentrated on the portion of the load support member 6 that is in contact with the support rod and the roller, and the strength will be reduced. Furthermore, the support mechanism becomes complex and additional space is required for these parts.

(Problems to be Solved by the Invention) This invention was made in consideration of the second point, and it is possible to avoid stress from acting concentrated on one part, and to reduce the complexity of the structure. It is an object of the present invention to provide a load supporting mechanism for a superconducting magnet device that can avoid the above problems.

[Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, this invention includes a superconducting magnet,
A support mechanism used in a superconducting magnet device comprising a cooling container in which a refrigerant is stored and the superconducting magnet is housed, wherein at least a part of the outside of the superconducting magnet has a curved surface, and the superconducting magnet is wound along the curved surface. It comprises a load support that is hung in the form of a band or string, and a support part that is provided along the wall of the cooling container, around which the load support is wrapped, and that supports the superconducting magnet and the load support. A support mechanism for a superconducting magnet device characterized by: a support mechanism used in a superconducting magnet device comprising a superconducting magnet, a cooling container in which a refrigerant is stored and the superconducting magnet is housed, and a casing that houses them. The superconducting magnet and the cooling container have at least a part of their outer sides having curved surfaces, first and second load supports wound around the curved surfaces to form a band or string shape, and the cooling container. a first support part provided along the wall of the container, around which the first load support is wound, and supporting the superconducting magnet and the first load support; and a second support part around which the second load support body is wound and which supports the cooling container, the superconducting magnet, and the first and second load support bodies. A support mechanism for a superconducting magnet device is provided.

(Function) With this configuration, it is possible to avoid concentration of stress in one part, and the structure is simplified because no particularly complicated parts are required. Further, since only a band-shaped or string-shaped support exists between the supported member and the support base, the gap between them can be reduced.

(Example) Examples of the present invention will be described below.

FIG. 1 is a cross-sectional view showing a support mechanism of a horizontal superconducting magnet device, and FIG. 2 is a vertical cross-sectional view thereof. This superconducting magnet device includes a coiled and cylindrical superconducting magnet 14, a helium container 13 in which liquid helium as a refrigerant is stored and housing the superconducting magnet 14, a nitrogen shield 12 provided on the outside of the helium container, and It has an outer tank 11 provided on the outside thereof. Note that the helium container 13, nitrogen shield 12, and outer tank 11 are all cylindrical. A high vacuum is maintained between the outer tank 11 and the nitrogen shield, and liquid nitrogen exists between the nitrogen shield 12 and the helium container 13.

A supporting portion 19 is provided on the earthen wall of the helium container 13, and the earthen wall is divided into two parts. is wrapped around it. The support 15 is made of a high-strength, non-magnetic material such as fiber reinforced plastic (FRP) or stainless steel. The superconducting magnet 14 is supported by the first support body 15 and the support portion 19 .

A support part 18 having the same structure as the support part 19 is provided on the upper wall part of the nitrogen shield 12, and a support part 18 having the same structure as the first support part 15 is provided between this support part 18 and the bottom curved surface of the helium container 13. The second support body 16 is wrapped around it.

This second support 16 is also made of the same material as the first support. The helium container 13 is supported by the second support body 16 and the support portion 18 .

A helium recovery tube is formed at the top of the helium container 13, and by recovering helium gas therefrom, the support material is effectively cooled and the inside and outside of the helium container wall is kept airtight.

Although not shown, the nitrogen shield 12 is also supported by the outer tank 11 by a similar mechanism.

In the above embodiments, the same effect can be obtained even if the support is in the form of a band or a string.

[Effects of the Invention] According to the present invention, there is provided a support mechanism for a superconducting magnet device that can avoid concentration of stress on a part and has a simple structure that does not require particularly complicated parts. I can do it. Further, since only a band-shaped or string-shaped support exists between the supported member and the support base, the gap between them can be reduced.

Furthermore, the storage space of the conventional support mechanism is no longer required,
The length of the outer tank can be shortened by that much. Furthermore, if the devices are configured with the same dimensions, the gap between the supported object and the support base can be increased.
A multilayer heat insulating material can be inserted into this gap, and the supporting material can be lengthened to compensate for the increased gap, thereby improving the heat insulation performance.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing a support mechanism according to an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view thereof, and FIG. 3 is a diagram showing a conventional support mechanism. 11; Outer tank, 12; Nitrogen shield, 13; Helium container, 14; Superconducting magnet, 15, 16; Support, 19, 20
;Support Department Figure 1 Applicant's agent Takehiko Suzue Figure 2

Claims (4)

[Claims] (1) A support mechanism used in a superconducting magnet device comprising a superconducting magnet and a cooling container in which a refrigerant is stored and the superconducting magnet is housed, wherein at least a portion of the outside of the superconducting magnet has a curved surface. , a load support that is wound along the curved surface to form a band or string shape; and a load support that is provided along the wall of the cooling container, around which the load support is wound and supports the superconducting magnet and the load support. 1. A support mechanism for a superconducting magnet device, comprising: a support section for supporting a superconducting magnet device. (2) The support mechanism for a superconducting magnet device according to claim 1, wherein the load support is made of fiber-reinforced plastic or stainless steel. (3) A support mechanism for use in a superconducting magnet device comprising a superconducting magnet, a cooling container in which a refrigerant is stored and the superconducting magnet is housed, and a casing that accommodates the superconducting magnet and the cooling container. At least a part of the outside of the container has a curved surface, and first and second load supports are wound around the curved surface to form a band or string shape, and are provided along the wall of the cooling container, a first support part around which the first load support is wound and supports the superconducting magnet and the first load support; a second support part provided along the wall of the casing; 1. A support mechanism for a superconducting magnet device, comprising a second support part around which a body is wrapped around and which supports the cooling container, the superconducting magnet, and the first and second load supports. (4) The support mechanism for a superconducting magnet device according to claim 3, wherein the first and second load supports are made of fiber-reinforced plastic or stainless steel.