JPH0275994A - Evacuation duct for nuclear fusion device - Google Patents
Evacuation duct for nuclear fusion deviceInfo
- Publication number
- JPH0275994A JPH0275994A JP63226444A JP22644488A JPH0275994A JP H0275994 A JPH0275994 A JP H0275994A JP 63226444 A JP63226444 A JP 63226444A JP 22644488 A JP22644488 A JP 22644488A JP H0275994 A JPH0275994 A JP H0275994A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- main body
- liner
- duct
- exhaust duct
- 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.)
- Pending
Links
- 230000004927 fusion Effects 0.000 title claims description 14
- 239000002184 metal Substances 0.000 claims description 25
- 230000008646 thermal stress Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 3
- 210000002381 plasma Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- Particle Accelerators (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は核融合装置用真空排気ダクトに関する。[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a vacuum exhaust duct for a nuclear fusion device.
（従来の技術）
核融合装置に使用される真空排気ダクトの従来例を第３
図、第４図を用いて説明する。(Conventional technology) The third conventional example of a vacuum exhaust duct used in a nuclear fusion device is
This will be explained using FIG.
第３図は核融合装置の右半分を示す概略的な縦断面図で
ある。核融合装置ではプラズマ１を保持するために、真
空８器２内を高真空に維持する必要が必ること、また核
融合装置の中でも重水素（Ｄ）と三重水素（Ｔ）のプラ
ズマを用いて核融合反応を行う装置では、核融合反応生
成物でおるヘリウム（Ｉｌｅ）と末燃焼のＤ２ 、Ｔ２
、ＤＴを排気する必要があることから、真空ポンプ３
と真空排気ダクト４が設けられている。真空排気ダクト
４は真空容器２を支える脚を１卜ねる構造となっている
が、真空排気ダクト４と脚を並用しない崩潰も、もらろ
んあり得る。なお、第３図中、Ｂはブランケット、ＴＣ
はトロイダルコイル、ＰＣはポロイダルコイ。FIG. 3 is a schematic vertical sectional view showing the right half of the fusion device. In a nuclear fusion device, in order to maintain plasma 1, it is necessary to maintain a high vacuum in the vacuum chamber 2, and in a fusion device, deuterium (D) and tritium (T) plasmas are used. In a device that performs a nuclear fusion reaction, helium (Ile), which is a fusion reaction product, and D2 and T2 of end combustion are used.
, DT needs to be evacuated, so vacuum pump 3
and a vacuum exhaust duct 4 are provided. Although the vacuum exhaust duct 4 has a structure in which the legs supporting the vacuum container 2 are folded together, it is of course possible that the vacuum exhaust duct 4 and the legs may collapse. In addition, in Figure 3, B is a blanket, TC
is a toroidal coil, and PC is a poloidal coil.
ルを示している。It shows the
通常、核融合装置では、脱ガスをするため真空容器２と
真空排気ダクト４のベーキングを行なう。Normally, in a nuclear fusion device, the vacuum vessel 2 and vacuum exhaust duct 4 are baked to remove gas.
ベーキングは真空容器２と真空排気ダクト４内に設けら
れた配管（図示せず）に所定の温度の高温高圧水を流す
方法か、または真空容器２と真空排気ダクト４にヒータ
を取付はヒータに通電することにより所定の温度で加熱
する方法が採られている。Baking can be done by flowing high-temperature, high-pressure water at a predetermined temperature through piping (not shown) installed in the vacuum container 2 and vacuum exhaust duct 4, or by installing a heater in the vacuum container 2 and vacuum exhaust duct 4. A method of heating at a predetermined temperature by applying electricity has been adopted.
前記構成によりベーキング時行うと、真空容器２と真空
排気ダクト４は熱膨張するため、従来は真空容器の外周
部５とダクトの一部にベロー６を設は熱膨張を吸収さＵ
る構造としている。さらに脚を兼ねたダクト４において
、脚４ａが床に接する部分は、第４図に示すように脚４
ａはガイド７ではさみ込まれるようになっており、脚４
ａは矢印８の方向にスライドし熱変位による拘束はない
。When baking with the above configuration, the vacuum container 2 and the evacuation duct 4 undergo thermal expansion.
It has a structure that allows Furthermore, in the duct 4 that also serves as a leg, the portion where the leg 4a touches the floor is as shown in FIG.
a is sandwiched between guides 7 and leg 4.
a slides in the direction of arrow 8 and is not restricted by thermal displacement.
（発明が解決しＪ：うとする課題）
しかしながら第３図矢印方向に示すようにべ一ギング時
の不動点を図中９とすれば、ベロー６の熱膨張方向は不
動点９とベロー６を結んだ直線１０上になる。そこでベ
ーキング時にはベロー６に直線１０の方向に力が働くの
で、ベロー６の耐久性に課題があった。また真空排気ダ
クト４が真空容器の脚４ａを並ねる場合は肉厚構造物に
する必要があり、肉厚部をベーキングすることは大きな
熱応力が発生したり、昇温に時間が要る等の課題があつ
Ｉこ 。(Problem to be Solved by the Invention) However, if the fixed point at the time of begging is 9 in the figure as shown in the arrow direction of Fig. 3, the thermal expansion direction of the bellows 6 will be It will be on the connected straight line 10. Therefore, during baking, a force is applied to the bellows 6 in the direction of the straight line 10, which poses a problem in the durability of the bellows 6. In addition, if the vacuum exhaust duct 4 lines up the legs 4a of the vacuum container, it must be made of a thick-walled structure, and baking the thick-walled portions may generate large thermal stress or take time to raise the temperature. I have a lot of challenges.
本発明は上記課題を解決するためになされたもので、ベ
ーキング時の熱膨張に対してベローに負担が加わること
がなく、しかもダグ１〜本体が肉厚の場合にはその肉厚
ダクト本体に過大な熱応力が発生したり、昇温に時間を
要しない核融合装胃用排気ダクトを捉供することにある
。The present invention has been made in order to solve the above-mentioned problems, and there is no burden on the bellows due to thermal expansion during baking. An object of the present invention is to provide an exhaust duct for nuclear fusion gas insufflation which does not generate excessive thermal stress and does not require time to raise the temperature.
（課題を解決するだめの手段）
本発明は真空ポンプが配置される真空排気ダクト本体に
空隙部をもたせて部上金属ライナを内張りし、この金属
ライナの両端部にそれぞれベローの一端を接続し、この
ベローの他端を前記ダグ１〜本体に接続し、前記金属ラ
イナの前記ダクト本体側にヒータが取着されてなること
を特徴とする。(Another Means to Solve the Problems) The present invention provides a vacuum exhaust duct body in which a vacuum pump is disposed, which has a gap, is lined with a metal liner, and connects one end of a bellow to each end of the metal liner. The other end of the bellows is connected to the duct 1 to the main body, and a heater is attached to the duct main body side of the metal liner.
（作 用）
ダクト本体に内張すした金属ライナをヒータで加熱する
と金属ライナは昇温し、ベーキングが行われ、ダクト本
体内の脱ガスが行われる。この金属ライナ自身をベーキ
ングずれば熱伸びによる応力がダクト本体に取着したベ
ローに生じることはなく、ベローの耐久性は向上する。(Function) When the metal liner lined in the duct body is heated with a heater, the temperature of the metal liner rises, baking is performed, and gas is degassed within the duct body. By baking the metal liner itself, stress due to thermal expansion will not occur in the bellows attached to the duct body, improving the durability of the bellows.
（実施例）
以下、本発明に係る核融合装置用真空排気ダクトの第１
の実施例について第１図を用いて説明する。なお、第１
図中第３図と同一部分には同一符号で示し、重複する部
分の説明は省略する。(Example) Hereinafter, the first example of the vacuum exhaust duct for a nuclear fusion device according to the present invention will be described.
An example will be described using FIG. 1. In addition, the first
In the figure, the same parts as in FIG. 3 are indicated by the same reference numerals, and the explanation of the overlapping parts will be omitted.
第１図申付号１１は真空排気ダクト本体を示している。Reference number 11 in FIG. 1 shows the main body of the vacuum exhaust duct.
この真空排気ダクト１１の端部に真空ポンプ３が配置さ
れている。真空排気ダグ１〜本体１１内には空隙部１２
をもたけて筒状金属ライナ１３が内張すされている。こ
の金属ライナ１３の両端部にはへロー １４．１５が接
続されており、ベロー１４．１５の他端部は真空排気ダ
クト本体１１に溶接されている。ざらに金属ライナ１３
の真空排気ダクト本体１１側にはヒータ１６が取着され
ている。このヒータ１６は金属ライナ１３の背面に直接
取着してもよく、また空隙部１２に仲春してもにい。こ
のヒータ１６に通電することによって、金属ライナ１３
を加熱することができる。A vacuum pump 3 is arranged at the end of this vacuum exhaust duct 11. There is a cavity 12 in the vacuum exhaust dug 1 to the main body 11.
A cylindrical metal liner 13 is lined with a cylindrical metal liner 13. Bellows 14.15 are connected to both ends of the metal liner 13, and the other end of the bellows 14.15 is welded to the vacuum exhaust duct body 11. Rough metal liner 13
A heater 16 is attached to the vacuum exhaust duct body 11 side. This heater 16 may be attached directly to the back surface of the metal liner 13, or may be attached to the cavity 12. By energizing this heater 16, the metal liner 13
can be heated.
真空排気ダクト本体１１のベーキングを行うには金属ラ
イナ１３の外側に設けられたヒータ１６に通電すること
によって、金属ライナ１３はベーキング温度まで昇温さ
れる。To bake the vacuum exhaust duct body 11, the metal liner 13 is heated to a baking temperature by energizing the heater 16 provided outside the metal liner 13.
このような構造をとれば、ベーキングされるのは金属ラ
イナ１３だけであるから真空排気ダクト本体１１の熱膨
張による変形はほとんどない。したがって、真空排気ダ
クトのベロー６の変形もほとんどなく、べＬｌ−６の耐
久性は大ぎく向上する。With this structure, only the metal liner 13 is baked, so there is almost no deformation of the vacuum exhaust duct body 11 due to thermal expansion. Therefore, there is almost no deformation of the bellows 6 of the vacuum exhaust duct, and the durability of the bellows 6 is greatly improved.
つぎに本発明の第２の実施例を第２図を用いて説明する
。第２図は真空排気ダクトの縦断面図であり、図中１３
は金属ライナであり金属ライナ１３の両端にはベロー１
４．１５が設けられ、ベロー１４．１５の端部は真空排
気ダクト本体１１に溶接されている。Next, a second embodiment of the present invention will be described using FIG. 2. Figure 2 is a vertical cross-sectional view of the vacuum exhaust duct, and 13
is a metal liner, and there are bellows 1 at both ends of the metal liner 13.
4.15 is provided, and the end of the bellows 14.15 is welded to the evacuation duct body 11.
ざらに金属ライナ１３の真空排気ダクト本体１１にはヒ
ータ１６が取付けられており、ヒータ１６を通電するこ
とにより金属ライナ１３を昇温脱ガスする。A heater 16 is attached to the evacuation duct main body 11 of the metal liner 13, and by energizing the heater 16, the metal liner 13 is heated and degassed.
このような構造をとれば、真空排気ダクトの熱膨張によ
る変形はほとんどなく、真空排気ダクトのベロー６が不
要になる。ざらに真空ダクトの変形がほとんどないから
、ダクトと脚の接地部分にはスライド構造を設ける必要
がなく排気ダクトの構造は非常に簡単になる。With such a structure, there is almost no deformation of the evacuation duct due to thermal expansion, and the bellows 6 of the evacuation duct becomes unnecessary. Since there is almost no deformation of the vacuum duct, there is no need to provide a sliding structure at the ground contact part of the duct and the legs, making the structure of the exhaust duct very simple.
（発明の効果）
本発明によれば両端にベローが設けられた金属ライナー
が真空排気ダクトの内側に設置されているので、ベーキ
ングを行う際には金属ライナーを昇温さぼるだけでよく
、従来例のように真空排気ダクトを昇温させる必要がな
い。したがって真空排気ダクトのベローには熱変形によ
る力がはとｌνど働らかないから、ベローズに過大な応
力は加わらず、ベローの寿命を大幅に延ばすことが可能
である。また、真空排気ダクトの変形がほとんどないの
で、従来の脚のようにスライド構造にする必要がなく、
かつ排気ダクトのベローも不要になる等その効果は大で
ある。(Effects of the Invention) According to the present invention, the metal liner with bellows at both ends is installed inside the vacuum exhaust duct, so when baking, it is only necessary to raise the temperature of the metal liner, unlike the conventional method. There is no need to raise the temperature of the vacuum exhaust duct as in the case of Therefore, the bellows of the vacuum exhaust duct is not subjected to much force due to thermal deformation, so no excessive stress is applied to the bellows, and the life of the bellows can be significantly extended. In addition, since the vacuum exhaust duct hardly deforms, there is no need for a sliding structure like with conventional legs.
Moreover, the effects are great, such as eliminating the need for bellows in the exhaust duct.
第１図は本発明に係る真空排気ダクトの第１の実施例を
示す縦断面図、第２図は同じく第２の実施例を示す縦断
面図、第３図および第４図は従来例を説明するための図
で、第３図は核融合装置を右半分のみ示ず概略断面図、
第４図は核融合装置の脚の部分を示す斜視図である。
１・・・プラズマ、 ２・・・真空容器、３・・・
真空ポンプ、 ４・・・真空排気ダクｉ〜、５・・・
外周部、 ６・・・ベロー、７・・・ガイド、
８・・・スライド方向、９・・・不動点、
１０・・・直線、１１・・・真空排気ダクト本体、
１２・・・空隙部、 １３・・・筒状金属ライナ
、１４．１５・・・ベロー、
１６・・・ヒータ。
代理人 弁理士 猪 股 祥 晃
（ばか１名）FIG. 1 is a longitudinal sectional view showing a first embodiment of the vacuum exhaust duct according to the present invention, FIG. 2 is a longitudinal sectional view showing the second embodiment, and FIGS. This is a diagram for explanation, and Figure 3 is a schematic cross-sectional view of the nuclear fusion device, not showing only the right half.
FIG. 4 is a perspective view showing the leg portion of the fusion device. 1...Plasma, 2...Vacuum container, 3...
Vacuum pump, 4... Vacuum exhaust duct i~, 5...
outer circumference, 6...bellows, 7...guide,
8...Sliding direction, 9...Fixed point,
DESCRIPTION OF SYMBOLS 10... Straight line, 11... Vacuum exhaust duct main body, 12... Cavity part, 13... Cylindrical metal liner, 14.15... Bellows, 16... Heater. Agent Patent attorney Yoshiaki Inomata (one idiot)
Claims (1)
もたせて筒状金属ライナを内張りし、この金属ライナの
両端部にそれぞれベローの一端を接続し、このベローの
他端を前記ダクト本体に接続し、前記金属ライナの前記
ダクト本体側にヒータが取着されてなることを特徴とす
る核融合装置用真空排気ダクト。A vacuum exhaust duct body in which a vacuum pump is placed has a gap and is lined with a cylindrical metal liner, one end of a bellow is connected to each end of this metal liner, and the other end of the bellow is connected to the duct body. A vacuum exhaust duct for a nuclear fusion device, characterized in that a heater is attached to the duct main body side of the metal liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63226444A JPH0275994A (en) | 1988-09-12 | 1988-09-12 | Evacuation duct for nuclear fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63226444A JPH0275994A (en) | 1988-09-12 | 1988-09-12 | Evacuation duct for nuclear fusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0275994A true JPH0275994A (en) | 1990-03-15 |
Family
ID=16845201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63226444A Pending JPH0275994A (en) | 1988-09-12 | 1988-09-12 | Evacuation duct for nuclear fusion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0275994A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04326106A (en) * | 1991-04-25 | 1992-11-16 | Japan Atom Energy Res Inst | Pressure controller |
-
1988
- 1988-09-12 JP JP63226444A patent/JPH0275994A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04326106A (en) * | 1991-04-25 | 1992-11-16 | Japan Atom Energy Res Inst | Pressure controller |
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