JPS61102582A - Cooling device for vacuum vessel for nuclear fusion device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a vacuum vessel cooling device for a nuclear fusion device that completely cools a vacuum vessel for plasma confinement in a nuclear fusion device.

[Prior art]

As shown in FIGS. 1 and 2, the torus-type nuclear fusion device 5 has a vacuum vessel 2 for confining plasma lft inside, and this empty vessel 2 has a thick ring part 3 and a bellows part 4. Consisting of The X-empty container 2 has a toroidal coil 5 and a poloidal coil 6 for holding the plasma 1 in the vacuum container, and a current transformer 7 for creating a current in the plasma 1 and heating it. The exhaust device 8 will be for evacuating the symbiotic container 21/'i to a high-X nitrogen state, and these are supported by a base 9 which is a support member.

The surface temperature of the X-nitrogen container 2 of such a nuclear fusion device increases due to heat input from the plasma 1 and baking during operation. For this purpose, it is necessary to cool the vacuum container 2fc, and as shown in FIG. 3, a cooling pipe 10 is attached to the outer wall of the symbiotic container 2 via a support 11. Specifically, as shown in FIG.
b, a support 11 on the wall of the vacuum container 2, a,
11b and bolts 12a and 12b.''
It is attached. Since the cooling pipes 10a, 10b and the supports 11a, 11b are electrically conductive, the parallel cooling pipes 10a, 10b are not installed in the same place. Configure a closed loop. Such a closed loop 5r groove cooling pipe 1
0 is attached as shown in FIG. 3, this closed loop intersects the magnetic field Bp generated by the poloidal coil 6 in the poloidal direction shown by the arrow 13. Since the strength of this magnetic field Up changes when the plasma 1 disappears, an induced current flows in this closed loop due to electromagnetic induction. Moreover, since the cooling pipe 1° constituting this closed loop is placed in the magnetic field Bτ in the toroidal direction shown by the arrow 14 created by the toroidal coil 5, so as to cross this magnetic field, an excessive electromagnetic force is applied to the cooling pipe 10. There is a danger that this may occur and destroy them.

[Purpose of the invention]

Therefore, an object of the present invention is to solve the problem of generating excessive electromagnetic force in the cooling pipe. The objective is to prevent this and prevent the cooling device from being destroyed.

[Summary of the invention]

In order to achieve all of the above objects, the present invention arranges a cooling tube attached to a vacuum vessel, in which plasma is confined by the magnetic fields of a toroidal coil and a poloidal coil, so as to match the toroidal direction and the poloidal direction. , completely prevents the generation of X4 electric current due to changes in the strength of the magnetic field in the poloidal direction, and also prevents the generation of electromagnetic force in the cooling pipe by preventing the m24 current from completely crossing the magnetic field in the toroidal direction. Take what you did as a sign.

[Embodiments of the invention]

FIG. 5 shows an embodiment of the present invention, in which the vacuum container 2
The arrangement of the cooling pipe 15 is shown, and the other parts are the same as the conventional devices shown in FIGS. 1, 2, and 4, and are therefore omitted. In this embodiment, the cooling pipe 15 is composed of a cooling pipe section 15a arranged in the poloidal direction and a cooling pipe section 15b arranged in the toroidal direction, and is attached to the vacuum vessel 2 via the support 11. ing. Therefore, since the closed loop formed by the cooling pipe portion 15a does not intersect with the poloidal direction H1mBp, even if the strength of the magnetic field Bp changes, no induced current is generated in this closed loop, and the generation of electromagnetic force is prevented. Further, since the 131 loop formed by the cooling pipe portion 15b intersects with the poloidal direction magnetic field Bp, when the strength of the magnetic field Bp changes, a jib flow is induced to flow in this closed loop. However, since this visiting current flows in the toroidal direction, it does not cut the toroidal direction magnetic % B r →)j, and therefore the i field By
The generation of electromagnetic force due to interaction with is prevented.

〔Effect of the invention〕

As described above, according to the present invention, by arranging the cooling pipes attached to the vacuum vessel so as to match the poloidal direction and the toroidal direction, generation of excessive two outputs due to the Llj4 current flowing through the cooling pipes is prevented and cooling is achieved. This has the effect of preventing destruction of the device.

1'#j *Explanation of the drawings Figures 1 to 4 show a conventional torso-type nuclear attachment device. A side view, FIG. 3 is a cooling pipe layout diagram, d↓4 is a sectional view taken along ■-■ of FIG. 3, and FIG. 5 is a cooling pipe layout diagram of a cooling device showing an embodiment of the present invention. It is.

2...X all containers, 5...Toroidal carp beggar 6. ,
, poloidal coil, 15... cooling pipe, 15a...
Cooling pipe part in poloidal direction, 15b... Cooling pipe part in toroidal direction

Claims (1)

[Claims] 1. In a vacuum vessel cooling device for a nuclear fusion device, which is equipped with a cooling tube attached to a vacuum vessel in which plasma is confined by the magnetic fields of a toroidal coil and a poloidal coil, the cooling tube is aligned in the toroidal direction and the poloidal direction. 1. A vacuum vessel cooling device for a nuclear fusion device, characterized in that the cooling device is arranged so as to