JPS6040989A - Magnetic limiter cooling device for 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] The present invention is for nuclear fusion devices - IJ, ? Regarding ivy cooling equipment.

The outline of a conventional nuclear fusion device will be explained based on the dots jA in FIGS. 1 to 5. Figure 1 is a partially cutaway plan view of the fusion device, Figure 2 is a cross-sectional view of Figure 8i\1, and Figure 3 is a vertical sectional view of the vacuum vessel. plasma 1
The vacuum vessel Z that holds the
The inside thereof is evacuated by a vacuum evacuation device 4.

Voloidal la field coils outside the container sA, sui' serve as primary windings to generate a nuclear discharge current in the plasma, and voloidal magnetic field coils inside the container fiA, 6B.

The 6Cld separatrix creates a magnetic surface 7 and serves to remove impurities flowing into the plasma 1 to the outside.

Because part of the plasma 1 is wrapped around the separatrix magnetic surface 7, it is necessary to cool the ends of the separatrix magnetic surface 7 to the magnetic limiter cooling tough) 8A, 814. For this purpose magnetic limit cooling duct) 8A, 8
13, refrigerant is flowed through the vibrator 9A, 913. In addition, 10 is a strange story, IIA.

The pace is 1111.

By the way - air limiter cooling duct 8A (8B1μ, 4th
From the partially cutaway plan view of the vacuum container 2 shown in the figure and the enlarged plan view shown in FIG. They are divided at a predetermined pitch in the torus direction and arranged around the entire circumference.

Then, the supply pipe 9A and the output pipe 9A2, which are connected to the magnetic limit cooling duct 8A at a fixed interval in the torus direction, are led out through the wall of the vacuum vessel 2, and the vias 9A1 and 9A2 are connected to the magnetic limit cooling duct 8A. Through the magnetic limiter cooling duct) 8A, cool green is supplied.

However, when the refrigerant flow paths are formed into J and L in this way, the vacuum vessel 2, the magnetic limiter cooling duct 8A, and the pipe 9A+ are formed.

9A2 as an element, point A, I:3 not shown in the 855 diagram.
,C.

An electrical closed circuit passing through D is constructed, and the vertical magnetic flux 12 generated by the voloidal magnetic field coils 5A, 513, 6A to 6C passes through this i71 circuit.

For this reason, when plasma is generated, this open circuit occurs? If force is generated, a circulating current flows, and the interaction between this current and the voloidal magnetic field causes the supply vibe 9A1 and the discharge pipe 9A,
There is a danger that excessive electromagnetic force will be generated and destroy the magnetic limiter cooling.

Therefore, an object of the present invention is to prevent or reduce the occurrence of the circulating current 6f in the magnetic limiter cooling device for a 1 ml nuclear device, thereby preventing destruction of the magnetic limiter cooling mechanism.

To achieve this objective, the present invention combines the vacuum vessel and the magnetic limiter by connecting the supply pipe and the discharge pipe to the magnetic limiter cooling duct with equal positions perpendicular to the direction of the magnetic flux of the voloidal magnetic field. It is characterized in that the closed circuit formed by the cooling duct and the vibrator does not intersect with the magnetic flux generated by the voloidal coil, thereby preventing or reducing the generation of circulating current.

Hereinafter, the present invention will be celebrated based on Hakusui's implementation. FIG. 6 is an end view of the magnetic limiter cooling layer 11 from string to r.
Figure 7 is a cross-sectional view of XU-■ in Figure 6. Are these the magnetic limiters on one side? tt 7i+1 duct is shown, but other +1
A 1il magnetic limiter cooling duct is similarly constructed.

The inside of the magnetic limiter cooling duct 13 is divided by a sparse partition 13A in the flow direction of the magnetic flux of the voloidal magnetic field, and cooling layers 13B and 13C are formed which communicate at both ends. At the same time, the dipping vibrator 14A is connected to the cooling layer 131J, and the throat outlet vibrator 114B is connected to the magnetic limiter cooling member 13 so as to communicate with the cooling layer 13C. In this case, the positions in the direction perpendicular to the direction of the magnetic flux of the voloidal magnetic field are made equal, and an electrical closed circuit is formed by the vacuum unit 2, the magnetic limiter cooling duct 13, the supply pipe 14A, and the discharge pipe 14B. It should not intersect with the magnetic flux generated by the voloidal magnetic field coil 613 or the like.

By doing this, the refrigerant supplied from the bIL supply pipe 14A to the cooling layer 1313 flows through the cooling layer 13 II, flows into the cooling layer 13c from both ends, and is discharged from the outlet pipe 1413. The magnetic limiter cooling duct 13 is cooled by flowing through a flow path extending from 7'L.

As described above, the electrical 141 circuit constituted by the vacuum vessel 2, the magnetic rim cooling duct 13, the supply pipe 14A, and the discharge pipe 14B does not intersect with the magnetic flux generated by the voloidal magnetic field coil 6B, etc. No electromotive force is generated in the circuit and no circulating current flows, so it is possible to prevent the magnetic limiter cooling mechanism from being destroyed by a single magnetic force.

As described above, according to the present invention, the supply vibe and the discharge pipe are connected to the magnetic limiter cooling duct with the same positions perpendicular to the direction of the magnetic flux of the voloidal magnetic field, so that C#) is generated in the voloidal magnetic field coil. Since the generation of circulating current during plasma generation is prevented or reduced without intersecting with the magnetic flux, the magnetic limiter cooling mechanism can be prevented from being destroyed.

[Brief explanation of the drawing]

Figures 1 to 5 show a conventional nuclear fusion device a. Figure 1 is a partially cutaway plan view of the fusion device, and Figure 2 is a cross section from ■ to 11 in Figure 1. Figure 3 is a vertical cross-sectional end view of the vacuum vessel, Figure 4 is a partially cutaway plan view of the true wall volume R,
FIG. 5 is an enlarged half view thereof. Figure 6 and L+47
The figures show one implementation of the present invention; FIG. 6 is a longitudinal end view of the a-air limiter cooling device for the fusion device 4, and FIG. 13... Magnetic limiter cooling duct, 14A... Supply port 1 Figure 3 Product Figure 4 Figure 5 Drive 6 Figure 7

Claims (1)

[Claims] 1. A nuclear fusion device equipped with a magnetic limiter cooling duct placed at the end of the separatrix magnetic surface for removing impurities in the plasma, and a supply vibe and a discharge vibe that flow a coolant through the magnetic limiter cooling force 1 duct. A magnetic limiter cooling device for a nuclear fusion device, characterized in that the supply vibe and the discharge vibe are connected to the magnetic limiter cooling duct with equal positions in a direction perpendicular to the direction of magnetic flux of all poloidal beams. Cooling system.