JPH0141232B2 - - Google Patents
Info
- Publication number
- JPH0141232B2 JPH0141232B2 JP57152508A JP15250882A JPH0141232B2 JP H0141232 B2 JPH0141232 B2 JP H0141232B2 JP 57152508 A JP57152508 A JP 57152508A JP 15250882 A JP15250882 A JP 15250882A JP H0141232 B2 JPH0141232 B2 JP H0141232B2
- Authority
- JP
- Japan
- Prior art keywords
- tokamak
- fusion device
- vacuum vessel
- plasma
- nuclear fusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Plasma Technology (AREA)
Description
【発明の詳細な説明】
本発明はトカマク形核融合装置に係り、特に、
その真空容器内にリミツタ、ライナー等の遮蔽板
を備えているものに好適なトカマク形核融合装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tokamak-type nuclear fusion device, and in particular,
The present invention relates to a tokamak type nuclear fusion device suitable for those equipped with a shielding plate such as a limiter or a liner in the vacuum vessel.
トカマク形核融合装置は、第１図に示すよう
に、主として円環状の真空容器２と、この真空容
器２内にプラズマ１を閉じ込めるためのトロイダ
ル磁場コイル３と、プラズマ１の種々の位置制御
を行なうためのポロイダル磁場コイル４と、これ
らの各部分を機械的に支持するための中心支柱
５、上架台６、下架台７、支柱８および真空容器
支持アーム９とより構成されている。 As shown in FIG. 1, the tokamak-type nuclear fusion device mainly consists of an annular vacuum vessel 2, a toroidal magnetic field coil 3 for confining the plasma 1 within the vacuum vessel 2, and various position controls for the plasma 1. It is composed of a poloidal magnetic field coil 4 for carrying out the operation, a central column 5, an upper pedestal 6, a lower pedestal 7, a column 8, and a vacuum vessel support arm 9 for mechanically supporting each of these parts.
また、前記真空容器２内には、ドーナツ形のプ
ラズマの断面の大きさを決めるためのプラズマ１
と接触する金属板、いわゆるリミツタや、真空容
器をプラズマから保護するための金属板、いわゆ
るライナ等、種々の遮蔽板が設けられているが、
これらの遮蔽板は従来、真空容器の内壁面に単品
として各別に並べて取付けていた。そのため、遮
蔽板に働く電磁力による回動トルクが取付ボルト
の締付力に対して小さい場合は問題ないが、取付
ボルトの締付力より大きい場合には遮蔽板１個毎
に回り止めを設けなければならず、遮蔽板の支持
構造が複雑になるという欠点があつた。 Further, in the vacuum chamber 2, a plasma 1 is provided for determining the cross-sectional size of the donut-shaped plasma.
Various shielding plates are provided, such as a metal plate that comes into contact with the plasma, a so-called limiter, and a metal plate that protects the vacuum vessel from plasma, a so-called liner.
Conventionally, these shielding plates have been individually attached to the inner wall surface of the vacuum container in parallel. Therefore, if the rotational torque due to the electromagnetic force acting on the shield plate is smaller than the tightening force of the mounting bolts, there will be no problem, but if it is larger than the tightening force of the mounting bolts, a rotation stopper should be provided for each shield plate. This has the disadvantage that the support structure for the shielding plate becomes complicated.
本発明は上述の点に鑑み成されたもので、その
目的とするところは、遮蔽板に電磁力が働き回動
トルクが作用するものであつても、複雑な支持構
造とすることなく、簡単に遮蔽板を真空容器に支
持し得るトカマク形核融合装置を提供するにあ
る。 The present invention has been made in view of the above-mentioned points, and its purpose is to provide a simple structure that does not require a complicated support structure even when an electromagnetic force is applied to the shielding plate and rotational torque is applied to the shielding plate. Another object of the present invention is to provide a tokamak-type nuclear fusion device in which a shielding plate can be supported in a vacuum vessel.
本発明は隣接する各遮蔽板の対向側面の一方に
凹部を、他方に凸部をそれぞれ形成し、この凹部
と凸部を嵌合することにより隣接する遮蔽板を互
いに連結し、各遮蔽板に働く回動トルクを互に打
消すようにすることにより、所期の目的を達成す
るようになしたものである。 According to the present invention, a recess is formed on one of the opposing sides of each adjacent shield plate, and a protrusion is formed on the other side, and the adjacent shield plates are connected to each other by fitting the recess and the protrusion. The intended purpose is achieved by mutually canceling out the rotating torques.
以下、本発明を図示の実施例に基づいて詳細に
説明する。 Hereinafter, the present invention will be explained in detail based on illustrated embodiments.
第２図および第３図は本発明の一実施例に係る
トカマク形核融合装置の真空容器部分の概略構成
を示す横断平面図および縦断側面図であり、また
第４図はその遮蔽板の支持構造を示す詳細展開図
である。 2 and 3 are a cross-sectional plan view and a longitudinal side view showing the schematic configuration of a vacuum vessel portion of a tokamak-type nuclear fusion device according to an embodiment of the present invention, and FIG. 4 is a support for the shielding plate thereof. It is a detailed developed view showing the structure.
例えばリミツタとして働く遮蔽板１０は、真空
容器２の内壁に沿つてトーラス方向には連続的
に、ポロイダル方向には継続的に配置されてい
る。これらの各遮蔽板１０は、それぞれ取付ボル
ト１１によつて真空容器２の内壁面に取付け支持
されるとともに、隣接する遮蔽板１０の対向側面
の一方には凹部１０ａが、他方には凸部１０ｂが
形成され、この凹部１０ａおよび凸部１０ｂを嵌
合することにより互に連結されている。なお、第
２図中符号１２はポート用穴を示す。 For example, the shielding plate 10 functioning as a limiter is disposed continuously along the inner wall of the vacuum vessel 2 in the toroidal direction and continuously in the poloidal direction. Each of these shielding plates 10 is attached and supported to the inner wall surface of the vacuum vessel 2 by a mounting bolt 11, and adjacent shielding plates 10 have a concave portion 10a on one side and a convex portion 10b on the other side. are formed, and are connected to each other by fitting the concave portion 10a and the convex portion 10b. Note that the reference numeral 12 in FIG. 2 indicates a port hole.
ところで、トカマク核融合装置では第１段階の
加熱としてプラズマ１をジユール加熱するが、こ
の際プラズマ１中には電流が流れている。したが
つて、このプラズマ１の消滅時には、第５図に示
すように、電磁誘導磁場BW，B〓が発生し、これ
らの磁場BW，B〓により各遮蔽板１０に渦電流iW，
i〓が誘起される。このため、この渦電流iWとトロ
イダル磁場BTとの相互作用によりフレミングの
左手の法則に従つて遮蔽板１０のトーラス方向両
端部に電磁力f1，f2が矢印方向に発生し、これら
の電磁力f1，f2が第６図に示すようなＹ軸を回転
中心とする回動トルクT1となる。同様に、渦電
流i〓とトロイダル磁場BTとの相互作用によつてＸ
軸を回転中心とする回動トルクT2が、また渦電
流i〓と垂直磁場BVとの相互作用によつてＺ軸を回
転中心とする回動トルクT3が発生する。これら
の回動トルクT1〜T3のうち、トルクT2，T3はト
ルクT1に比較して小さく、これらに対する回り
止めは取付ボルトの締付力で充分に対処できるの
で特に問題はないが、前述のようにトルクT1が
大きくなると、取付ボルトの締付力のみでは対処
しきれなくなる。 By the way, in a tokamak fusion device, the plasma 1 is heated in a joule as the first stage of heating, and at this time, an electric current flows through the plasma 1. Therefore, when the plasma 1 is extinguished, electromagnetic induction magnetic fields B W , B 〓 are generated as shown in FIG .
i〓 is induced. Therefore, due to the interaction between this eddy current i W and the toroidal magnetic field B T , electromagnetic forces f 1 and f 2 are generated in the direction of the arrow at both ends of the shielding plate 10 in the torus direction according to Fleming's left-hand rule. The electromagnetic forces f 1 and f 2 result in a rotational torque T 1 about the Y axis as shown in FIG. Similarly, due to the interaction between the eddy current i〓 and the toroidal magnetic field B T ,
Rotational torque T 2 about the axis is generated, and rotational torque T 3 about the Z axis is generated by the interaction between the eddy current i and the vertical magnetic field B V. Of these rotating torques T 1 to T 3 , torques T 2 and T 3 are smaller than torque T 1 , and there is no particular problem as they can be sufficiently prevented from rotating by the tightening force of the mounting bolts. However, as mentioned above, when the torque T 1 becomes large, it becomes impossible to cope with it only by the tightening force of the mounting bolt.
しかし、この実施例では、各遮蔽板１０の隣接
する部分を凹凸嵌合により互に連結したので、互
に反対方向に作用する電磁力f1，f2はこの連結で
殆んど打消され、各遮蔽板１０に働く回動トルク
T1も殆んど零となり、取付ボルトの締付力で充
分に対処できるようになる。 However, in this embodiment, since the adjacent portions of each shielding plate 10 are connected to each other by concave-convex fitting, the electromagnetic forces f 1 and f 2 that act in opposite directions are almost canceled by this connection. Rotating torque acting on each shield plate 10
T 1 also becomes almost zero, and the tightening force of the mounting bolts becomes sufficient.
ただ、両端に位置する遮蔽板１０においては、
その外側端部が連結されておらず、そこに作用す
る電磁力f1またはf2に相対する電磁力f2またはf1
が存在しないため、この電磁力f1またはf2による
回動トルクが働く。したがつて、両端に位置する
遮蔽板１０にはそれぞれ回り止めを施こしてい
る。この回り止め手段としては、例えば遮蔽板の
取付ボルトによる締付部に非円形凸部を形成し、
これを真空容器の内壁に形成された非円形凹部に
嵌合させる、等の構造を採用すればよい。 However, in the shielding plates 10 located at both ends,
The electromagnetic force f 2 or f 1 opposite to the electromagnetic force f 1 or f 2 whose outer ends are unconnected and acts on it
Since there is no rotation torque, this electromagnetic force f 1 or f 2 acts. Therefore, the shielding plates 10 located at both ends are each prevented from rotating. As this rotation prevention means, for example, a non-circular convex portion is formed on the tightening portion of the shielding plate by the mounting bolt,
A structure such as fitting this into a non-circular recess formed on the inner wall of the vacuum container may be adopted.
また第７図は、第４図の実施例において、隣接
する遮蔽板１０の凹凸嵌合部１０ａ，１０ｂに電
気絶縁物１３を介在させたものである。したがつ
て、各遮蔽板１０間に流れる渦電流をこの電気絶
縁物１３で遮断し、回動トルクT1をさらに小さ
くすることができる。 Further, FIG. 7 shows an example in which an electrical insulator 13 is interposed between the concave-convex fitting portions 10a and 10b of the adjacent shielding plates 10 in the embodiment shown in FIG. Therefore, the electric insulator 13 blocks the eddy current flowing between each shield plate 10, and the rotation torque T1 can be further reduced.
第８図ないし第１０図は、遮蔽板の他の変形例
を示すものである。この遮蔽板１４は、例えばモ
リブデン（比抵抗5.5μΩ・cm）等の耐熱性金属材
料からなる遮蔽部１５と、例えばインコネル625
（比抵抗124.0μΩ・cm）SUH660（耐熱性ステンレ
ス鋼、比抵抗91.2μΩ・cm）等の高抵抗でかつ機
械的強度にすぐれた金属材料からなる取付座１６
を遮蔽部取付ボルト１７で一体に固着することに
よつて構成され、その取付座１６で取付ボルト１
１により真空容器２の内壁に支持されるととも
に、取付座１６の凹部１６ａと凸部１６ｂの嵌合
により隣接する各遮蔽板１６間が連結されてい
る。なお、この遮蔽板１４においても、両端に位
置するもののみが、その取付座１６に形成された
非円形凸部１６ｃと真空容器２の内壁に形成され
た非円形凹部２ａとの嵌合により回動しないよう
に支持されている。したがつて、前記実施例と同
様な効果が得られる他、遮蔽部１５でプラズマに
対する熱遮蔽を良好に行ない得るとともに、取付
座１６で電磁力に対する機械的強度を確保し、か
つその高抵抗により渦電流の発生を抑制すること
ができる。 8 to 10 show other modifications of the shielding plate. This shielding plate 14 includes a shielding portion 15 made of a heat-resistant metal material such as molybdenum (specific resistance 5.5 μΩ·cm), and a shielding portion 15 made of, for example, Inconel 625.
(Resistivity: 124.0μΩ・cm) Mounting seat 16 made of a metal material with high resistance and excellent mechanical strength, such as SUH660 (heat-resistant stainless steel, resistivity: 91.2μΩ・cm)
are fixed together with the shield part mounting bolt 17, and the mounting bolt 1 is fixed at the mounting seat 16.
1 is supported by the inner wall of the vacuum container 2, and adjacent shielding plates 16 are connected by fitting the recessed portion 16a and the projected portion 16b of the mounting seat 16. Also, in this shielding plate 14, only those located at both ends can be rotated by fitting the non-circular convex portion 16c formed on the mounting seat 16 with the non-circular concave portion 2a formed on the inner wall of the vacuum container 2. It is supported so that it does not move. Therefore, in addition to obtaining the same effects as in the embodiment described above, the shielding part 15 can provide good thermal shielding against plasma, the mounting seat 16 can ensure mechanical strength against electromagnetic force, and its high resistance The generation of eddy currents can be suppressed.
以上説明した本発明のトカマク形核融合装置に
よれば、隣接する各遮蔽板の対向側面の一方に凹
部を、他方に凸部をそれぞれ形成し、この凹部と
凸部を嵌合することにより隣接する遮蔽板を互い
に連結し、各遮蔽板に働く回動トルクを互に打消
すようにしたので、少なくとも中間部に位置する
遮蔽板の回り止めを省略することが可能となり、
遮蔽板の真空容器に対する支持構造を簡単化する
ことができる。 According to the tokamak-type nuclear fusion device of the present invention described above, a concave portion is formed on one side of the opposing side surface of each adjacent shielding plate, and a convex portion is formed on the other side, and the concave portion and the convex portion are fitted to each other. Since the shielding plates that are connected to each other are connected to each other so that the rotational torque acting on each shielding plate is mutually canceled, it is possible to omit the rotation prevention of at least the intermediate shielding plate,
The support structure of the shielding plate for the vacuum container can be simplified.
第１図はトカマク形核融合装置の縦断側面図、
第２図および第３図は本発明の一実施例に係るト
カマク形核融合装置の真空容器部分の概略構成を
示す横断平面図および縦断側面図、第４図はその
遮蔽板の支持構造を示す展開図、第５図および第
６図は遮蔽板に加わる各磁場、渦電流、電磁力お
よび回動トルクを示す説明図、第７図は各遮蔽板
の連結手段の変形例を示す展開図、第８図は遮蔽
板の変形例を示す縦断側面図、第９図は第８図の
Ａ―Ａ断面展開図、第１０図は第８図のＢ―Ｂ断
面展開図、である。
１…プラズマ、２…真空容器、２ａ…回り止め
用非円形凹部、１０，１４，２１…遮蔽板、１０
ａ…連結用凹部、１０ｂ…連結用凸部、１３…電
気絶縁物、１５…遮蔽部、１６…取付座、１６ａ
…連結用凹部、１６ｂ…連結用凸部、１６ｃ…回
り止め用非円形凸部。
Figure 1 is a longitudinal side view of a tokamak-type fusion device.
2 and 3 are a cross-sectional plan view and a longitudinal side view showing a schematic configuration of a vacuum vessel portion of a tokamak-type nuclear fusion device according to an embodiment of the present invention, and FIG. 4 is a support structure for a shielding plate thereof. Developed diagram, FIGS. 5 and 6 are explanatory diagrams showing each magnetic field, eddy current, electromagnetic force, and rotating torque applied to the shielding plate, FIG. 7 is a developed diagram showing a modification of the connecting means of each shielding plate, 8 is a longitudinal sectional side view showing a modified example of the shielding plate, FIG. 9 is a developed cross-sectional view taken along the line AA in FIG. 8, and FIG. 10 is a developed cross-sectional view taken along the line BB in FIG. DESCRIPTION OF SYMBOLS 1... Plasma, 2... Vacuum container, 2a... Non-circular recessed part for rotation stop, 10, 14, 21... Shielding plate, 10
a... Connecting recess, 10b... Connecting protrusion, 13... Electrical insulator, 15... Shielding part, 16... Mounting seat, 16a
...Concave part for connection, 16b...Convex part for connection, 16c...Non-circular convex part for preventing rotation.
Claims (1)
複数個の遮蔽板をトーラス方向に並置し、真空容
器に支持したトカマク形核融合装置において、前
記隣接する各遮蔽板の対向側面の一方に凹部を、
他方に凸部をそれぞれ形成し、この凹部と凸部を
嵌合することにより隣接する遮蔽板を互いに連結
したことを特徴とするトカマク形核融合装置。 ２ 特許請求の範囲第１項において、前記各遮蔽
板の凹凸嵌合部に電気絶縁物を介在させたことを
特徴とするトカマク形核融合装置。 ３ 特許請求の範囲第１項において、両端に位置
する遮蔽板のみを回動しないように真空容器に支
持したことを特徴とするトカマク形核融合装置。 ４ 特許請求の範囲第１項において、前記遮蔽板
をプラズマ側部分と真空容器側部分に分け、プラ
ズマ側部分の材料として真空容器側部分の材料よ
りも耐熱性にすぐれたものを用い、真空容器側部
分の材料としてプラズマ側部分よりも高抵抗で、
かつ、機械的強度にすぐれたものを用いたことを
特徴とするトカマク形核融合装置。[Scope of Claims] 1. In a tokamak-type nuclear fusion device in which a plurality of shielding plates are arranged side by side in a torus direction along the inner wall of a vacuum vessel housing plasma and supported by the vacuum vessel, each of the adjacent shielding plates is opposed to each other. A recess on one side,
A tokamak-shaped nuclear fusion device characterized in that a convex portion is formed on the other side, and adjacent shielding plates are connected to each other by fitting the concave portion and the convex portion. 2. The tokamak-type nuclear fusion device according to claim 1, characterized in that an electrical insulator is interposed between the concavo-convex fitting portions of each of the shielding plates. 3. The tokamak-type nuclear fusion device according to claim 1, characterized in that only the shielding plates located at both ends are supported in a vacuum container so as not to rotate. 4. In claim 1, the shielding plate is divided into a plasma side part and a vacuum vessel side part, and the plasma side part is made of a material with better heat resistance than the material of the vacuum vessel side part, and the vacuum vessel The material for the side part has higher resistance than the plasma side part,
A tokamak-type nuclear fusion device is characterized by using a material with excellent mechanical strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57152508A JPS5942481A (en) | 1982-09-03 | 1982-09-03 | Tokamak-shaped fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57152508A JPS5942481A (en) | 1982-09-03 | 1982-09-03 | Tokamak-shaped fusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5942481A JPS5942481A (en) | 1984-03-09 |
| JPH0141232B2 true JPH0141232B2 (en) | 1989-09-04 |
Family
ID=15541979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57152508A Granted JPS5942481A (en) | 1982-09-03 | 1982-09-03 | Tokamak-shaped fusion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942481A (en) |
-
1982
- 1982-09-03 JP JP57152508A patent/JPS5942481A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5942481A (en) | 1984-03-09 |
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