JPS586918B2 - Vacuum vessel for fusion equipment - Google Patents
Vacuum vessel for fusion equipmentInfo
- Publication number
- JPS586918B2 JPS586918B2 JP53049986A JP4998678A JPS586918B2 JP S586918 B2 JPS586918 B2 JP S586918B2 JP 53049986 A JP53049986 A JP 53049986A JP 4998678 A JP4998678 A JP 4998678A JP S586918 B2 JPS586918 B2 JP S586918B2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum vessel
- plasma
- vacuum
- baking
- circuit
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/006—Processes utilising sub-atmospheric pressure; Apparatus therefor
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma Technology (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Description
【発明の詳細な説明】
本発明は核融合装置用真空容器にかかわり、特に真空容
器内部をプラズマ加熱前に超高真空にするためにベーキ
ングを行う核融合装置用真空容器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum vessel for a nuclear fusion device, and more particularly to a vacuum vessel for a nuclear fusion device in which baking is performed to bring the inside of the vacuum vessel to an ultra-high vacuum before plasma heating.
核融合装置用真空容器ｔこおいては、真空容器内部にプ
ラズマ生成する前の段階として、まず、真空容器内部を
超高真空（通常は１×１０−８〜Ｉ×１０−１１Ｔｏｒ
ｒ程度）にする必要があり、この超真空を得るために真
空容器をベーキング（１３０〜５００℃）しなければな
らない。In a vacuum vessel for a nuclear fusion device, the interior of the vacuum vessel is first heated to an ultra-high vacuum (usually 1 x 10-8 to I x 10-11 Torr) before generating plasma inside the vacuum vessel.
In order to obtain this ultra-vacuum, the vacuum container must be baked (130 to 500°C).
従来、核融合装置用真空容器の内部を超高真空にするベ
ーキング方法としては、真空容器に電熱線を巻き付け、
これに電流を流して加熱しベーキングすることが一般的
に行われている。Conventionally, the baking method for creating an ultra-high vacuum inside a vacuum container for a nuclear fusion device involves wrapping a heating wire around the vacuum container.
It is common practice to heat and bake the material by passing an electric current through it.
しかし、このベーキング方法では、電熱線が真空容器に
完全に密着しないことがあり、このため、電熱線自身が
部分的に過熱して断線する恐れがある。However, in this baking method, the heating wire may not be in complete contact with the vacuum container, and as a result, there is a risk that the heating wire itself may partially overheat and break.
一旦断線すると電熱線を交換しなければならず、このた
めには装置を解体しなければならない。Once broken, the heating wire must be replaced, and for this purpose the device must be dismantled.
また、電熱線を取付けるには金具が必要になり、狭いス
ペースでの増付け作業は困難を伴う等従来のベーキング
では種々問題が生じ好ましいものではなかった。Furthermore, conventional baking has been undesirable due to various problems such as the need for metal fittings to attach heating wires and the difficulty of additional work in a narrow space.
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、取付け作業に困難をともなうことなく、簡
単にベーキングをおこなうことができる核融合装置用真
空容器を提供するにある。The present invention has been made in view of the above-mentioned points, and its object is to provide a vacuum container for a nuclear fusion device that can be easily baked without any difficulty in installation work.
本発明は金属性容器の途中に形成される絶縁部近傍に、
該絶縁部を跨ぐようにしてプラズマ生成前に真空容器内
を超高真空にするベーキング時のみ金属性容器同志を短
絡する短絡片を設け、該短絡片と金属性容器とによリ−
ターン回路を形成し、かつ、ベーキングの後にプラズマ
のジュール加熱を行う一次コイルからの誘導電流をプラ
ズマジュール加熱前に該−ターン回路に流して真空容器
をジュール加熱してベーキングすることにより、所期の
目的を達成するように成したものである。In the present invention, near the insulating part formed in the middle of the metal container,
A short-circuiting piece is provided across the insulating part to short-circuit the metallic containers together only during baking to bring the inside of the vacuum container to an ultra-high vacuum before plasma generation, and the short-circuiting piece and the metallic container are connected to each other.
By forming a turn circuit and causing Joule heating of the plasma after baking, the induced current from the primary coil is passed through the turn circuit before the plasma Joule heating to heat the vacuum vessel and bake it as desired. It was designed to achieve the purpose of
即ち、トカマク型核融合装置においては、プラズマ生成
前の段階であるならば、真空容器に電流を流してもさし
つかえないことに着目し、ベーキングのために真空容器
自身を通電回路としてジュール加熱しようとするもので
あるが、一方、プラズマ生成後は、プラズマが二次回路
となる必要があるため、真空容器は一ターン絶縁する必
要がある。In other words, in a tokamak-type fusion device, we focused on the fact that it is okay to run an electric current through the vacuum vessel as long as it is at a stage before plasma generation, and we attempted to use Joule heating of the vacuum vessel itself as a current-carrying circuit for baking. However, after plasma generation, the plasma needs to become a secondary circuit, so the vacuum container needs to be insulated for one turn.
そこで、ベーキング時のみ絶縁部を短絡する短絡片を設
け、この短絡片と真空容器とで一ターン回路を形成し、
該一ターン回路に、ベーキングの後にプラズマのジュー
ル加熱を行う一次コイルからの誘導電流をプラズマジュ
ール加熱前に流して真空容器をジュール加熱してベーキ
ングすることを特徴とするものである。Therefore, we provided a shorting piece that short-circuited the insulating part only during baking, and formed a one-turn circuit with this shorting piece and the vacuum container.
The one-turn circuit is characterized in that an induced current from a primary coil that performs Joule heating of the plasma after baking is passed through the one-turn circuit before the plasma Joule heating, so that the vacuum vessel is Joule heated and baked.
以下、図面の実施例に基づいて本発明を説明する。The present invention will be described below based on embodiments shown in the drawings.
第１図に本発明が採用されるトカマク型核融合装置の概
略を示す。FIG. 1 schematically shows a tokamak-type nuclear fusion device to which the present invention is applied.
該図のトカマク型核融合装置は、プラズマ８を内部に閉
じ込めるほぼ円環状の真空容器１、該真空容器１を取り
囲み、トーラス方向に所定間隔をもって複数個配置され
、トーラス方向のプラズマ８閉じ込め磁場を発生するト
ロイダルコイル２、プラズマ８をジュール加熱するため
に鉄心３に設けられた一次コイル４、真空容器１内に閉
じ込めたプラズマ８の垂直方向位置を制御する垂直磁場
コイル５、及び不要な垂直方向の磁場を打消す垂直磁場
巻戻しコイル６、水平方向位置を制御する水平磁場コイ
ル７で概略構成されている。The tokamak-type nuclear fusion device shown in the figure includes a substantially annular vacuum vessel 1 that confines plasma 8 therein, a plurality of vacuum vessels surrounding the vacuum vessel 1, arranged at predetermined intervals in the torus direction, and a magnetic field confining the plasma 8 in the torus direction. The generated toroidal coil 2, the primary coil 4 provided in the iron core 3 for Joule heating of the plasma 8, the vertical magnetic field coil 5 for controlling the vertical position of the plasma 8 confined in the vacuum vessel 1, and the unnecessary vertical direction. It is roughly composed of a vertical magnetic field rewinding coil 6 that cancels the magnetic field of the magnetic field, and a horizontal magnetic field coil 7 that controls the horizontal position.
そして、本実施例では真空容器１を二次回路とした鉄心
３、及び一次コイル４にて変流器を構成させ、真空容器
１に相互誘導作用による誘導電流を流してジュール加熱
を行いベーキングしようとするものである。In this embodiment, a current transformer is configured by the iron core 3 and the primary coil 4, with the vacuum vessel 1 as a secondary circuit, and an induced current due to mutual induction is passed through the vacuum vessel 1 to perform Joule heating and baking. That is.
一方、プラズマ生成後はプラズマ８を二次回路としてジ
ュール加熱する必要があるため、真空容器１は通常一タ
ーン絶縁されている。On the other hand, after plasma generation, it is necessary to perform Joule heating using the plasma 8 as a secondary circuit, so the vacuum vessel 1 is normally insulated for one turn.
そこで、本実施例では第２図に示すように、真空容器１
のベーキング時のみ一ターン絶縁部９を短絡する通電用
短絡片１０を絶縁部９を跨ぐように真空容器１に増付け
て一ターン回路を形成し、ベーキングするこの一ターン
回路に一次コイル４からの誘導電流を流して真空容器１
をベーキングするもので、ベーキング完了時には短絡片
１０は取外す。Therefore, in this embodiment, as shown in FIG.
A current-carrying short-circuiting piece 10 is added to the vacuum vessel 1 so as to straddle the insulating part 9 to short-circuit the one-turn insulating part 9 only during baking to form a one-turn circuit. Vacuum vessel 1 by passing an induced current of
When the baking is completed, the shorting piece 10 is removed.
このように構成することによって、ベーキング時、真空
容器１と短絡片１０によって一ターン回路が形成され、
この一ターン回路を二次回路とする変流器が一次コイル
４、及び鉄心３によって形成され、一次コイル４からの
誘導電流によって真空容器１はジュール加熱される。With this configuration, a one-turn circuit is formed by the vacuum container 1 and the shorting piece 10 during baking,
A current transformer having this one-turn circuit as a secondary circuit is formed by the primary coil 4 and the iron core 3, and the vacuum vessel 1 is Joule heated by the induced current from the primary coil 4.
従って、本実施例によれば、ベーキングを行うために装
置の解体、あるいは狭いスペースでの作業性の問題など
を考慮しなくて済むので、容易にベーキングを行うこと
ができる。Therefore, according to this embodiment, there is no need to consider dismantling the device or problems with workability in a narrow space for baking, so baking can be easily carried out.
以上説明した本発明の核融合装置用真空容器によれば、
金属性容器の途中に形成される絶縁部近傍に、該絶縁部
を跨ぐようにしてプラズマ生成前に真空容器内を超高真
空にするベーキング時のみ金属性容器同志を短絡する短
絡片を設け、該短絡片と金属性容器とによリーターン回
路を形成し、かつ、ベーキングの後にプラズマのジュー
ル加熱を行う一次コイルからの誘導電流をプラズマジュ
ール加熱前に該一ターン回路に流して真空容器をジュー
ル加熱してベーキングするようにしたものであるから、
簡単にベーキングを行うことができる。According to the vacuum vessel for a nuclear fusion device of the present invention explained above,
A short-circuiting piece is provided in the vicinity of the insulating part formed in the middle of the metallic container so as to straddle the insulating part and short-circuiting the metallic containers only during baking to bring the inside of the vacuum container to an ultra-high vacuum before plasma generation. A return circuit is formed between the short circuit piece and the metal container, and an induced current from the primary coil that performs Joule heating of the plasma after baking is passed through the one turn circuit before Joule heating of the plasma to heat the vacuum container in Joules. Because it is heated and baked,
Baking can be done easily.
第１図はトカマク型核融合装置を一部断面して示す概略
図、第２図は本発明の一実施例を示す真空容器のベーキ
ング時の状態を示す平面図である。
１・・・・・・真空容器、２・・・・・・トロイダルコ
イル、３・・・・・・鉄心、４・・・・・・一次コイル
、５・・・・・・垂直磁場コイル、６・・・・・・垂直
磁場巻戻コイル、７・・・・・・水平磁場コイル、８・
・・・・・プラズマ、９・・・・・・絶縁部、１０・・
・・・・短絡片。FIG. 1 is a partially cross-sectional schematic view of a tokamak-type nuclear fusion device, and FIG. 2 is a plan view showing a state of a vacuum vessel during baking, showing an embodiment of the present invention. 1... Vacuum vessel, 2... Toroidal coil, 3... Iron core, 4... Primary coil, 5... Vertical magnetic field coil, 6... Vertical magnetic field unwinding coil, 7... Horizontal magnetic field coil, 8...
...Plasma, 9...Insulation section, 10...
...Short-circuit piece.
Claims (1)
され、その内部にプラズマが生成される核融合装置用真
空容器において、前記金属性容器の絶縁部近傍に、該絶
縁部を跨ぐようにしてプラズマ生成前に真空容器内を超
高真空にするベーキング時のみ金属性容器同志を短絡す
る短絡片を設け、該短絡片と前記金属性容器とによリ−
ターン回路を形成し、かつ、ベーキングの後に前記プラ
ズマのジュール加熱を行う一次コイルからの誘導電流を
プラズマジュール加熱前に該−ターン回路に流して真空
容器をジュール加熱してベーキングすることを特徴とす
る核融合装置用真空容器。1. In a vacuum vessel for a nuclear fusion device in which an insulating part is formed in the middle of a metallic container to form an annular shape, and plasma is generated inside the vacuum vessel, a vacuum vessel straddling the insulating part is placed near the insulating part of the metallic container. In this way, a short-circuiting piece is provided to short-circuit the metallic containers together only during baking, where the inside of the vacuum container is brought to an ultra-high vacuum before plasma generation.
A turn circuit is formed, and an induced current from a primary coil that performs Joule heating of the plasma after baking is passed through the turn circuit before Joule heating of the plasma to perform Joule heating and baking of the vacuum vessel. Vacuum vessel for nuclear fusion equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53049986A JPS586918B2 (en) | 1978-04-28 | 1978-04-28 | Vacuum vessel for fusion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53049986A JPS586918B2 (en) | 1978-04-28 | 1978-04-28 | Vacuum vessel for fusion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54142495A JPS54142495A (en) | 1979-11-06 |
| JPS586918B2 true JPS586918B2 (en) | 1983-02-07 |
Family
ID=12846331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53049986A Expired JPS586918B2 (en) | 1978-04-28 | 1978-04-28 | Vacuum vessel for fusion equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586918B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6128963U (en) * | 1984-07-24 | 1986-02-21 | いすゞ自動車株式会社 | Thermostat for engine cooling water |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0698292B2 (en) * | 1986-07-03 | 1994-12-07 | 忠弘 大見 | Ultra high purity gas supply method and supply system |
-
1978
- 1978-04-28 JP JP53049986A patent/JPS586918B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6128963U (en) * | 1984-07-24 | 1986-02-21 | いすゞ自動車株式会社 | Thermostat for engine cooling water |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54142495A (en) | 1979-11-06 |
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