JPH0694865A - Structure of diverter plate - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a strong diverter plate that can withstand the electromagnetic load when plasma is extinguished. [Structure] A protective tile and a cooling pipe inserted into a hole penetrating the protective tile are provided, and a hole for holding the protective tile portion around is formed on at least one surface of the protective tile, and a vacuum is provided in the outer hole. A support member that is coupled to the container-side support structure is inserted and brought into contact with the cooling pipe, and the protective tile, the cooling pipe, and the support member are metallurgically coupled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a diverter plate installed in a fusion reactor.

[0002]

2. Description of the Related Art FIGS. 6 to 9 show an example of a first prior art,
A protective tile 51 made of carbon material or the like is attached to a cooling pipe 5 made of metal such as copper.
2 is a cross-sectional view of a diverter plate having a structure for metallurgically bonding to the block 53. FIG. 6 shows a structure in which the metal block 53 having the cooling pipe 52 penetrated and the protective tile 51 are brought into planar contact with each other to perform metallurgical bonding. FIG. 7 shows a structure in which the cooling pipe 52 is inserted into the joint surface between the protective tile 51 and the metal block 53 to perform metallurgical joint, and FIG. 8 shows the contact surface between the protective tile 51 and the metal block 53 removed in FIG. FIG. 9 shows a structure for metallurgically bonding each of them in a state, and FIG. 9 shows a structure for forming a bonding surface between the protective tile 51 and the metal block 53 in the direction perpendicular to the surface of the diverter plate in FIG. 6-9, 54 is a combination part with a support structure.

However, in the structure according to the first prior art described above, there is a possibility that excessive stress may occur at the bonding boundary during bonding or during furnace operation due to the difference in the coefficient of thermal expansion between the protective tile and the metal block, resulting in destruction. There was a problem that there was. FIGS. 10 to 12 show an example of the second prior art, which is a diverter plate that was previously invented and filed by the inventors of the present application (Japanese Patent Laid-Open No. 3-176692) for the purpose of solving the problems of the first prior art. FIG. 10 shows the structure, FIG. 10 is a cross-sectional view thereof, FIG. 11 is a vertical cross-sectional view, and FIG.
2 is a perspective external view. In FIGS. 10 to 12, 51 is a protective tile, 52 is a cooling pipe, 54 is a combined portion with a support structure, 55 is a metallurgical joint, and 56 is plasma.

In the second prior art, a protective tile 51 is formed of a carbon material or the like, and a hole is formed through two surfaces of the protective tile 51 which are perpendicular to the inner surface of the furnace and which are opposed to each other. The cooling tile 52 made of metal is penetrated and the protective tile 51 and the cooling pipe 52 are metallurgically joined by brazing or the like.

[0005]

As described above, even in the above-mentioned conventional diverter plate, a structure capable of withstanding repeated heat fluxes during operation while avoiding breakage due to stress generated at the boundary surface at the time of joining the protective tiles is provided. It was possible to take. However, the diverter plate structure needs to be firmly supported by the support structure installed in the vacuum container so as to withstand the heat load during operation and the electromagnetic force load during plasma extinction.

When the combined portion of the diverter plate structure and the support structure is formed by a protective material tile such as a brittle material such as a carbon material, it is difficult to ensure sufficient reliability and the load causes damage. There was a problem that there was a risk of reaching. On the other hand, in the case where the protective tile is joined to the combination portion with the support structure made of a metal material in order to solve this problem, the problem of destruction due to the stress at the joining boundary is caused again.

The present invention has been made in view of such circumstances, and an object thereof is to provide a strong diverter plate which can overcome the above-mentioned problems with a simple structure and can withstand an electromagnetic force load when plasma is extinguished. There is.

[0008]

The above object is achieved by the diverter plate described in the claims. That is, it has a protective tile and a cooling pipe inserted in a hole penetrating the protective tile, and at least one surface of the protective tile is provided with a hole for holding the protective tile portion in the periphery, and a vacuum container is provided in the outer hole. A structure of a diverter plate in which a support member that is coupled to the support structure on the side is inserted and brought into contact with a cooling pipe, and the protective tile, the cooling pipe, and the supporting member are metallurgically coupled. The structure of the diverter plate described above, wherein the connection between the support structure on the vacuum container side and the support member is by mechanical means. The structure of the diverter plate described above, wherein the support structure on the vacuum container side and the support member are connected by metallurgical means. Is. Hereinafter, the operation and the like of the present invention will be described based on Examples.

[0009]

1 to 3 are views showing an embodiment of a diverter plate according to the present invention, FIG. 1 is a sectional view in a direction perpendicular to the axis of a diverter plate cooling pipe, and FIG. 2 is a direction parallel to the axis of the cooling pipe. 3 is a sectional view taken along line aa in FIG. 4 to 5 are views for explaining the structure in the vicinity of the diverter plate mounting portion, FIG. 4 is a partial external view in the vicinity of a combined portion with the support structure, and FIG. 5 is a sectional view taken along the line bb in FIG. . 1 to 5, 1 is a protective tile, 2 is a cooling pipe, 3 is a support member, 4 is a combination portion with a support structure, 5 is a rail, 6
Is a substrate, 7 is a supporting armor tile, and 8 is a general armor tile.

First, a hole (hereinafter referred to as hole A) is formed by penetrating two surfaces of the protective tile 1 which are perpendicular to the surface facing the plasma and are opposed to each other.
Say. ) Is drilled. Next, a hole from the surface of the diverter plate facing the plasma to the hole A (hereinafter,
It is called hole B. ) Is drilled. Then, the cooling pipe 2 is first inserted into the hole A, and then the support member 3 made of a metal columnar member such as copper or stainless steel for supporting the diverter plate is inserted into the hole B, and then inserted first. Contact the cooling pipe 2.

In this state, the protective tile 1 and the cooling pipe 2 are metallurgically joined by brazing or the like, and at the same time, the support member 3 and the cooling pipe 2 are metallurgically joined. The support member 3 and the supporting structure 3 are joined to each other by a mechanical joint such as bolt fastening or a metallurgical joint such as brazing because the joint is located on the side opposite to the plasma. It is possible to obtain a joint with sufficiently high reliability.

Further, since the joint surface between the protective tile 1 and the support member 3 is a surface having no open end, the stress generated at the joint is as simple as that at the joint between the protective tile 1 and the cooling pipe 2. Force or tensile force, which is important due to the difference in coefficient of thermal expansion at the joint boundary, which is important for the failure mechanism of the protective tile 1,
Especially, the problem of stress concentration at the open end of the joint surface does not occur.

As a result, the combination portion 4 with the highly reliable metallic support structure can be installed in the diverter structure, and excessive stress at the joint between the protective tile 1 and the support member 3 can be avoided. Therefore, it becomes possible to prevent the protective tile 1 from being broken during joining or during operation.

The support member 3 and the support structure combination portion 4 may be integrally formed, but by mechanically or metallurgically joining them, the structure and the manufacturing procedure are simplified. It is possible. Further, even when some trouble such as deformation occurs in the combination portion 4 with the support structure and it becomes difficult to remove it, it is relatively easy to remove the joint portion between the support member 3 and the combination portion 4 with the support structure. In addition, the diverter structure can be removed from the vacuum container.

[0015]

As described above, according to the present invention, as described in the above embodiment, the following effects can be obtained. (EN) A highly reliable support structure for a diverter plate structure that can withstand a heat load during operation and an electromagnetic force load during plasma extinction. It becomes possible to avoid generation of excessive stress not only in the protective tile and the cooling pipe but also in the joint surface between the protective tile and the support member. Even when a problem occurs in the support member, the diverter structure can be removed from the support structure on the vacuum container side. Not only the protective tile and the cooling pipe but also the bonding between the protective tile and the supporting member can be performed without damaging the protective tile, and it is possible to provide a highly reliable combination structure with the supporting structure.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a diverter plate according to the present invention and a cross-sectional view perpendicular to the axis of a cooling pipe.

FIG. 2 is a view showing an embodiment of a diverter plate according to the present invention and is a sectional view in a direction parallel to an axis of a cooling pipe.

FIG. 3 is a sectional view taken along the line aa in FIG.

FIG. 4 is a diagram illustrating a structure near a diverter plate mounting portion.

5 is a sectional view taken along line bb in FIG.

FIG. 6 is a diagram showing an example of a first conventional technique.

FIG. 7 is a diagram showing an example of a first conventional technique.

FIG. 8 is a diagram showing an example of a first conventional technique.

FIG. 9 is a diagram showing an example of a first conventional technique.

FIG. 10 is a diagram showing an example of a second conventional technique.

FIG. 11 is a diagram showing an example of a second conventional technique.

FIG. 12 is a diagram showing an example of a second conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protective tile 2 Cooling pipe 3 Support member 4 Combination part with a support structure 5 Rail 6 Substrate 7 Support part Armatile 8 General part Armatile 51 Protective tile 52 Cooling pipe 53 Metal block 54 Combination part with a support structure 55 Metallurgical connection Part 56 Plasma side

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[Procedure amendment]

[Submission date] September 21, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 3]

[Figure 5]

FIG. 11

[Figure 1]

[Fig. 2]

[Figure 4]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

[Fig. 12]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tatsuaki Sawai 2-4-25 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy Industries Ltd. Tokyo Design Office (72) Hideo Ise 2-4, Minamisuna, Koto-ku, Tokyo No. 25 Kawasaki Heavy Industries, Ltd., Tokyo Design Office (72) Inventor Masato Akiba, Nakahara, Nakamachi, Naka-machi, Naka-gun, Ibaraki Prefecture No. 801 1 Nakahara, Japan Atomic Energy Research Institute (72) Masanori Araki, Naka-gun, Naka-gun, Ibaraki Prefecture No. 801 Nakahara, Japan Atomic Energy Research Institute, Nakahara, Machimuyama (72) Inventor Satoshi Suzuki No. 801, Nakahara, Nakamu, Mukaiyama, Nakamachi, Naka-gun, Ibaraki Prefecture

Claims (3)

[Claims] 1. A fusion reactor, comprising a protective tile and a cooling pipe inserted into a hole penetrating the protective tile, wherein at least one surface of the protective tile is provided with a hole around which the protective tile portion is held. A diverter characterized in that a protective tile, a cooling pipe, and a supporting member are metallurgically coupled to each other by inserting a supporting member that is connected to the supporting structure on the vacuum container side into an outer hole and abutting against the cooling pipe. Board structure. 2. The structure of the diverter plate according to claim 1, wherein the support structure on the vacuum container side and the support member are connected by mechanical means. 3. The structure of the diverter plate according to claim 1, wherein the support structure on the vacuum vessel side and the support member are connected by metallurgical means.