JP3349319B2 - Vacuum container for fusion device - Google Patents
Vacuum container for fusion deviceInfo
- Publication number
- JP3349319B2 JP3349319B2 JP33886495A JP33886495A JP3349319B2 JP 3349319 B2 JP3349319 B2 JP 3349319B2 JP 33886495 A JP33886495 A JP 33886495A JP 33886495 A JP33886495 A JP 33886495A JP 3349319 B2 JP3349319 B2 JP 3349319B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum vessel
- main body
- fusion
- plasma
- vacuum
- 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 - Fee Related
Links
- 230000004927 fusion Effects 0.000 title claims description 34
- 239000000463 material Substances 0.000 claims description 22
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 239000010937 tungsten Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 description 14
- 238000012423 maintenance Methods 0.000 description 8
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 5
- 229910001069 Ti alloy Inorganic materials 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- Plasma Technology (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、核融合反応を生じ
るプラズマを取り囲む核融合装置の真空容器に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum vessel of a nuclear fusion device surrounding a plasma which causes a nuclear fusion reaction.
【０００２】[0002]
【従来の技術】重水素等を燃料として核融合反応を生じ
させる核融合炉及び核融合実験装置では、プラズマを取
り囲む真空容器や同真空容器内外の構造物が、核融合反
応により発生する中性子の照射を受けて放射化する。即
ち、この放射化を図３に示す核融合装置（トカマク型核
融合実験装置）により説明すると、核融合反応を生じる
プラズマ１１は、真空容器本体５内に磁場発生コイル
（図示せず）により閉じ込められる。2. Description of the Related Art In a nuclear fusion reactor and a nuclear fusion experimental apparatus that generate a nuclear fusion reaction using deuterium or the like as a fuel, a vacuum vessel surrounding the plasma and structures inside and outside the vacuum vessel generate neutrons generated by the fusion reaction. Activated upon irradiation. That is, the activation is explained by a fusion device (tokamak-type fusion experiment device) shown in FIG. 3. The plasma 11 causing the fusion reaction is confined in the vacuum vessel main body 5 by a magnetic field generating coil (not shown). Can be
【０００３】このプラズマ１１から発生する中性子１２
は、真空容器本体５及び同真空容器本体５内外の構造物
（図示せず）を照射して、これらの真空容器本体５及び
真空容器本体５内外の構造物の構成材料は放射化する。The neutrons 12 generated from the plasma 11
Irradiates the vacuum vessel body 5 and structures (not shown) inside and outside the vacuum vessel body 5, and the constituent materials of the vacuum vessel body 5 and the structures inside and outside the vacuum vessel body 5 are activated.
【０００４】[0004]
【発明が解決しようとする課題】前記図３に示す従来の
核融合装置（トカマク型核融合実験装置）には、次の問
題があった。即ち、放射化のレベルが高い場合には、真
空容器本体５及び真空容器本体５内外の構造物への作業
員の接近が不可能になって、真空容器本体５及び真空容
器本体５内外の構造物に対するメンテナンスを遠隔操作
機器により行う必要がある。The conventional fusion device (tokamak-type fusion experiment device) shown in FIG. 3 has the following problems. That is, when the activation level is high, the worker cannot access the vacuum vessel body 5 and the structures inside and outside the vacuum vessel body 5, and the structures inside and outside the vacuum vessel body 5 and the vacuum vessel body 5 become inaccessible. It is necessary to perform maintenance on objects using remote control equipment.
【０００５】しかし、核融合炉及び核融合実験装置は、
構造が複雑なため、現在の技術レベルでは、フルリモー
トによるメンテナンスは不可能であって、作業員による
メンテナンスが必要である。そのため、真空容器本体５
等をチタン合金等の放射化しにくい低放射化材料により
構成することが提案されているが、真空容器本体の構造
材としてこの低放射化材料を使用した実績がない上に、
この低放射化材料は、核融合反応の燃料である水素同位
体により脆化するため、この低放射化材料により真空容
器本体５等を構成すると、製作性、安全性、及び信頼性
に問題が生じる。However, a fusion reactor and a fusion experimental device are
Due to the complexity of the structure, full remote maintenance is not possible at the current technology level, and requires maintenance by operators. Therefore, the vacuum vessel body 5
It has been proposed to use a low activation material, such as a titanium alloy, which is difficult to activate.However, there is no record of using this low activation material as a structural material of the vacuum vessel body.
Since this low activation material is embrittled by hydrogen isotope, which is the fuel of the nuclear fusion reaction, if the low activation material constitutes the vacuum vessel main body 5 and the like, there are problems in manufacturability, safety, and reliability. Occurs.
【０００６】本発明は前記の問題点に鑑み提案するもの
であり、その目的とする処は、作業員が真空容器本体
及び真空容器本体内外の構造物に接近できて、作業員に
よるメンテナンスを実施でき、真空容器本体及び真空
容器本体内外の構造物の製作性、安全性、及び信頼性を
向上できる核融合装置の真空容器を提供しようとする点
にある。The present invention has been made in view of the above problems, and has as its object to provide a worker with access to the vacuum vessel main body and structures inside and outside the vacuum vessel main body, and to perform maintenance by the worker. It is an object of the present invention to provide a vacuum vessel of a nuclear fusion device capable of improving the manufacturability, safety, and reliability of a vacuum vessel body and structures inside and outside the vacuum vessel body.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明は、核融合反応を生じるプラズマを取り囲
む核融合装置の真空容器において、プラズマから発生す
る中性子の照射を受けて放射化するステンレス鋼の構造
材で真空容器本体を構成し、同真空容器本体の表面にタ
ングステンまたはモリブデンで構成した放射線を遮蔽す
る遮蔽体を設けている。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a vacuum vessel of a fusion apparatus surrounding a plasma which causes a fusion reaction, which is activated by irradiation with neutrons generated from the plasma. to form a vacuum container body in the construction of stainless steel material which is provided with a shield for shielding radiation is constituted by tungsten or molybdenum on the surface of the vacuum container body.
【０００８】[0008]
【発明の実施の形態】次に本発明の核融合装置の真空容
器の一実施形態を図１、図２により説明する。図１は、
同真空容器の一部断面図、図２は図１の矢印Ａ部分の拡
大断面図である。図１の５が真空容器本体、５ａが同真
空容器本体５の内板、５ｂが同真空容器本体５の外板
で、これらの内板５ａ及び外板５ｂがプラズマ（図３の
１１参照）からの中性子（図３の１２参照）の照射によ
り放射化するステンレス鋼等の構造材により構成されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a vacuum vessel of a nuclear fusion device according to the present invention will be described with reference to FIGS. FIG.
FIG. 2 is an enlarged sectional view of a portion indicated by an arrow A in FIG. 1. 1 is a vacuum vessel main body, 5a is an inner plate of the vacuum vessel main body 5, 5b is an outer plate of the vacuum vessel main body 5, and these inner and outer plates 5a and 5b are plasma (see 11 in FIG. 3). 3 is activated by irradiation with neutrons (see 12 in FIG. 3).
【０００９】図１、図２の１がタングステンまたはモリ
ブデン等により構成した遮蔽体で、同遮蔽体１は、図
１、図２に示すように第１壁または第１壁の台座として
の機能を兼ね備えており、同遮蔽体１にアーマタイル２
を設置してもよい。遮蔽体１及びアーマタイル２は、例
えば図２に示すように真空容器本体５の内板５ａに設け
た固定座３にボルト４により固定される。FIGS. 1 and 2 show a shield 1 made of tungsten, molybdenum, or the like. The shield 1 functions as a first wall or a pedestal of the first wall as shown in FIGS. Armor tiles 2 on the shield 1
May be installed. The shield 1 and the armature 2 are fixed to the fixing seat 3 provided on the inner plate 5a of the vacuum vessel main body 5 by bolts 4, for example, as shown in FIG.
【００１０】なお図１、図２では、真空容器本体５内外
の構造物の図示を省略している。次に前記図１、図２に
示す核融合装置の真空容器の作用を具体的に説明する。
核融合反応を生じるプラズマ１１は、真空容器本体５内
に磁場発生コイル（図示せず）により閉じ込められる。
このプラズマ１１から発生する中性子１２は、真空容器
本体５及び同真空容器本体５内外の構造物（図示せず）
を照射して、これらの真空容器本体５及び構造物の構成
材料は放射化する。In FIGS. 1 and 2, structures inside and outside the vacuum vessel main body 5 are not shown. Next, the operation of the vacuum vessel of the nuclear fusion device shown in FIGS. 1 and 2 will be specifically described.
The plasma 11 that causes the nuclear fusion reaction is confined in the vacuum vessel main body 5 by a magnetic field generating coil (not shown).
The neutrons 12 generated from the plasma 11 are supplied to the vacuum vessel main body 5 and structures inside and outside the vacuum vessel main body 5 (not shown).
And the constituent materials of the vacuum vessel body 5 and the structure are activated.
【００１１】前記図３に示す従来の核融合装置（トカマ
ク型核融合実験装置）では、この放射化のレベルが高い
場合、真空容器本体５及び構造物への作業員の接近が不
可能になる。従って真空容器本体５及び構造物に対する
メンテナンスを遠隔操作機器により行う必要があるが、
核融合炉及び核融合実験装置は、構造が複雑なため、現
在の技術レベルでは、フルリモートによるメンテナンス
が不可能であって、作業員によるメンテナンスが必要で
ある。In the conventional fusion device (tokamak-type fusion experiment device) shown in FIG. 3, when this activation level is high, it becomes impossible for an operator to approach the vacuum vessel main body 5 and the structure. . Therefore, it is necessary to perform maintenance on the vacuum vessel main body 5 and the structure using a remote control device.
The fusion reactor and the fusion experimental device have complicated structures, and cannot be maintained by full remote at the current technical level, and require maintenance by operators.
【００１２】そのため、真空容器本体５等をチタン合金
等の放射化しにくい低放射化材料により構成することが
提案されているが、真空容器本体の構造材としてこの低
放射化材料を使用した実績がない上に、この低放射化材
料は、核融合反応の燃料である水素同位体により脆化す
るため、この低放射化材料により真空容器本体５等を構
成すると、製作性、安全性、及び信頼性に問題が生じ
る。For this reason, it has been proposed that the vacuum vessel main body 5 and the like be made of a low activation material such as a titanium alloy which is hard to be activated. However, there has been a track record of using this low activation material as a structural material of the vacuum vessel main body. In addition, this low activation material is embrittled by hydrogen isotope, which is the fuel of the nuclear fusion reaction. Therefore, if the low activation material is used to form the vacuum vessel main body 5 and the like, manufacturability, safety and reliability can be improved. A problem arises in sex.
【００１３】しかし本発明の核融合装置では、真空容器
本体５及び同真空容器本体５内外の構造物（図示せず）
をプラズマからの中性子の照射により放射化するステン
レス鋼等の構造材で構成していても、同真空容器本体５
及び同構造物の表面にタングステンまたはモリブデン等
により構成した遮蔽体１を設けているので、真空容器本
体５及び構造物に低放射化材料を使用することなく、作
業員が真空容器本体５及び構造物に接近可能で、作業員
によるメンテナンスが実施可能になる。However, in the fusion apparatus of the present invention, the vacuum vessel main body 5 and the structures inside and outside the vacuum vessel main body 5 (not shown)
Is made of a structural material such as stainless steel, which is activated by irradiation of neutrons from plasma.
Also, since the shield 1 made of tungsten, molybdenum, or the like is provided on the surface of the structure, the operator can use the vacuum vessel body 5 and the structure without using a low activation material for the vacuum vessel body 5 and the structure. The object can be accessed, and maintenance by an operator can be performed.
【００１４】また真空容器本体５及び同真空容器本体５
内外の構造物をチタン合金等の放射化しにくい低放射化
材料により構成する必要がなく、使用実績の高いステン
レス鋼等の構造材により構成しているので、真空容器本
体５及び同真空容器本体５内外の構造物の製作性、安全
性、及び信頼性が向上する。The vacuum vessel body 5 and the vacuum vessel body 5
The inner and outer structures do not need to be made of a low activation material such as a titanium alloy which is hard to be activated, and are made of a structural material such as stainless steel which has a high track record of use. The manufacturability, safety and reliability of internal and external structures are improved.
【００１５】[0015]
【発明の効果】本発明の核融合装置の真空容器は前記の
ように真空容器本体及び同真空容器本体内外の構造物を
プラズマから発生する中性子の照射により放射化するス
テンレス鋼の構造材で構成していても、同真空容器本体
及び同構造物の表面にタングステンまたはモリブデンに
より構成した放射線を遮蔽する遮蔽体を設けているの
で、真空容器本体及び同真空容器本体内外の構造物に低
放射化材料を使用することなく、作業員が真空容器本体
及び同真空容器本体内外の構造物に接近できて、作業員
によるメンテナンスを実施できる。As described above, the vacuum vessel of the nuclear fusion device of the present invention is made of a stainless steel structural material that activates the vacuum vessel body and the structures inside and outside the vacuum vessel body by irradiation of neutrons generated from plasma. also it is, since the shielding蔽体provided to shield radiation configured from <br/> tungsten or molybdenum on the surface of the vacuum container body and the structure, the vacuum container body and the vacuum container body The worker can access the vacuum vessel main body and the structures inside and outside the vacuum vessel main body without using the low activation material for the inside and outside structures, and can perform maintenance by the worker.
【００１６】また真空容器本体及び同真空容器本体内外
の構造物をチタン合金等の放射化しにくい低放射化材料
により構成する必要がなく、使用実績の高いステンレス
鋼の構造材により構成しているので、真空容器本体及び
同真空容器本体内外の構造物の製作性、安全性、及び信
頼性を向上できる。Also, the vacuum vessel body and the structures inside and outside the vacuum vessel body do not need to be made of a low-radiation material, such as a titanium alloy, which is hard to be activated, so that stainless steel which has been used for a long time has been used.
Since it is made of a steel structural material, the manufacturability, safety, and reliability of the vacuum vessel main body and structures inside and outside the vacuum vessel main body can be improved.
【図１】本発明の核融合装置の真空容器の一実施形態を
示す一部断面図である。FIG. 1 is a partial cross-sectional view showing one embodiment of a vacuum vessel of a nuclear fusion device of the present invention.
【図２】図１の矢印Ａ部分の拡大断面図である。FIG. 2 is an enlarged sectional view of an arrow A portion in FIG.
【図３】核融合装置（トカマク型核融合実験装置）の作
用説明図である。FIG. 3 is an explanatory diagram of an operation of a nuclear fusion device (a tokamak-type fusion experimental device).
１ 遮蔽体 ２ アーマタイル ３ 固定座 ４ ボルト ５ 真空容器本体 ５ａ 真空容器本体５の内板 ５ｂ 真空容器本体５の外板 DESCRIPTION OF SYMBOLS 1 Shield 2 Armature tile 3 Fixed seat 4 Bolt 5 Vacuum container main body 5a Inner plate of vacuum container main unit 5b Outer plate of vacuum container main unit 5
───────────────────────────────────────────────────── フロントページの続き (72)発明者 永島 圭介 茨城県那珂郡那珂町大字向山801番地の １ 日本原子力研究所 那珂研究所内 (72)発明者 鈴木 優 東京都千代田区丸の内二丁目５番１号 三菱重工業株式会社内 (72)発明者 小野塚 正紀 東京都千代田区丸の内二丁目５番１号 三菱重工業株式会社内 (56)参考文献 特開 昭62−227740（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G21B 1/00 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Keisuke Nagashima 1 at 801 Mukaiyama, Naka-machi, Naka-gun, Naka-gun, Ibaraki Prefecture Inside the Japan Atomic Energy Research Institute Naka Research Institute (72) Inventor Yu Suzuki 2-5-1 Marunouchi, Chiyoda-ku, Tokyo No. Mitsubishi Heavy Industries, Ltd. (72) Inventor Masaki Onozuka 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Heavy Industries, Ltd. (56) References JP-A-62-227740 (JP, A) (58) Field (Int.Cl. 7 , DB name) G21B 1/00
Claims (1)
核融合装置の真空容器において、 プラズマから発生する中性子の照射を受けて放射化する
ステンレス鋼の構造材で真空容器本体を構成し、同真空
容器本体の表面にタングステンまたはモリブデンで構成
した放射線を遮蔽する遮蔽体を設けたこと特徴とする核
融合装置の真空容器。1. A vacuum vessel of a fusion device surrounding a plasma generating a nuclear fusion reaction, wherein the vacuum vessel body is composed of a stainless steel structural material which is activated by irradiation with neutrons generated from the plasma. vacuum vessel of a nuclear fusion apparatus, wherein the provision of the蔽体shielding to shield radiation configured <br/> tungsten or molybdenum on the surface of the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33886495A JP3349319B2 (en) | 1995-12-26 | 1995-12-26 | Vacuum container for fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33886495A JP3349319B2 (en) | 1995-12-26 | 1995-12-26 | Vacuum container for fusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09178872A JPH09178872A (en) | 1997-07-11 |
| JP3349319B2 true JP3349319B2 (en) | 2002-11-25 |
Family
ID=18322122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33886495A Expired - Fee Related JP3349319B2 (en) | 1995-12-26 | 1995-12-26 | Vacuum container for fusion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3349319B2 (en) |
-
1995
- 1995-12-26 JP JP33886495A patent/JP3349319B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09178872A (en) | 1997-07-11 |
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