JPS6122919B2 - - Google Patents
Info
- Publication number
- JPS6122919B2 JPS6122919B2 JP54105870A JP10587079A JPS6122919B2 JP S6122919 B2 JPS6122919 B2 JP S6122919B2 JP 54105870 A JP54105870 A JP 54105870A JP 10587079 A JP10587079 A JP 10587079A JP S6122919 B2 JPS6122919 B2 JP S6122919B2
- Authority
- JP
- Japan
- Prior art keywords
- current transformer
- air
- core current
- transformer coil
- coil
- 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
- 230000004907 flux Effects 0.000 claims description 21
- 230000004927 fusion Effects 0.000 claims description 15
- 230000001788 irregular Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 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
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は核融合装置に係り、特にトーラス型核
融合装置のコイルの配列に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a nuclear fusion device, and particularly to a coil arrangement of a torus-type nuclear fusion device.
従来、トーラス型核融合装置の多くは、プラズ
マの加熱又は保持のために、プラズマと鎖交する
変化磁束を必要とする。この変化磁束を作る方法
は、大別して、鉄心変流器コイルを用いる方法と
空心変流器コイルを用いる方法とに分けられる。
最近の大型装置では、磁気飽和が無いという利点
から、空心変流器コイルを用いる方法が多用され
ている。
Conventionally, many torus-type fusion devices require a changing magnetic flux that interlinks with the plasma in order to heat or maintain the plasma. Methods for creating this varying magnetic flux can be roughly divided into methods using iron-core current transformer coils and methods using air-core current transformer coils.
In recent large-scale devices, methods using air-core current transformer coils are often used because of the advantage of no magnetic saturation.
空心変流器コイルの使用上最も問題となるの
は、導電性材料を用いた構造物が変化磁束の中に
存在すると渦電流を生じ、この渦電流による不整
磁場がプラズマ閉じ込め磁場に悪影響を及ぼし、
遂にはプラズマが消減してしまう事態が発生する
ことである。
The biggest problem when using air-core current transformer coils is that when a structure made of conductive material exists in a changing magnetic flux, eddy currents are generated, and the irregular magnetic field caused by these eddy currents has a negative effect on the plasma confinement magnetic field. ,
Eventually, a situation will occur where the plasma will disappear.
従来のトーラス型核融合装置の概要を示す第３
図により、それを説明する。図において、円環状
の真空容器１０は内部にプラズマ１２を発生させ
るものである。この真空容器１０の小周（ポロイ
ダル）方向にはトロイダルコイル１４が配置さ
れ、真空容器１０のトーラス方向には空心変流器
コイル１６と垂直磁場コイル１８がそれぞれ配置
されている。真空容器１０及びその周囲に配置さ
れるコイル１４，１６，１８は上下のベース２
０，２２に支持されている。 Part 3 shows an overview of the conventional torus-type fusion device.
This will be explained using diagrams. In the figure, an annular vacuum vessel 10 generates plasma 12 inside. A toroidal coil 14 is arranged in the poloidal direction of the vacuum vessel 10, and an air-core current transformer coil 16 and a vertical magnetic field coil 18 are arranged in the torus direction of the vacuum vessel 10, respectively. The vacuum container 10 and the coils 14, 16, 18 arranged around it are connected to the upper and lower bases 2.
It is supported by 0.22.
このような構成のトーラス型核融合装置では、
トロイダルコイル１４の垂直磁場コイル１８の作
る磁場によりプラズマ１２を真空容器１０内に閉
じ込め、更に空心変流器コイル１６が作る磁束Φ
を急激に変化させてプラズマ１２に電流を流し、
プラズマ１２の閉じ込め及び加熱を行なう。 In a torus-type fusion device with this configuration,
The plasma 12 is confined within the vacuum vessel 10 by the magnetic field created by the vertical magnetic field coil 18 of the toroidal coil 14, and the magnetic flux Φ created by the air-core current transformer coil 16 is
A current is applied to the plasma 12 by rapidly changing the
The plasma 12 is confined and heated.
ところが、従来のトーラス型核融合装置では、
ベース２０，２２が空心変流器コイル１６の磁束
Φと鎖交しているため磁束Φの急激な変化により
ベース２０，２２に渦電流が発生する。この渦電
流による不整磁場は、トロイダルコイル１４と垂
直磁場コイル１８の作るプラズマ閉じ込め磁場を
乱し、プラズマ１２の閉じ込め性能を著しく害す
る。このため従来は、ベース２０，２２を細分割
し、各部分を絶縁していた、この細分割する方式
は、構造が複雑で経済的でない上に、ベース２
０，２２の剛性を弱め、核融合装置を支持するベ
ースの機能を損うおそれがあつた。 However, in the conventional torus-type fusion device,
Since the bases 20 and 22 are interlinked with the magnetic flux Φ of the air-core current transformer coil 16, eddy currents are generated in the bases 20 and 22 due to sudden changes in the magnetic flux Φ. The irregular magnetic field caused by this eddy current disturbs the plasma confinement magnetic field created by the toroidal coil 14 and the vertical magnetic field coil 18, and significantly impairs the confinement performance of the plasma 12. For this reason, in the past, the bases 20 and 22 were subdivided and each part was insulated.This method of subdividing the bases 20 and 22 was not only complicated and uneconomical, but also
There was a risk that the rigidity of the 0.0,22 would be weakened and the function of the base supporting the fusion device would be impaired.
本発明の目的は、空心変流器コイルの磁束のう
ちベースと鎖交する成分を減らしてベースに生ず
る渦電流を減少させ、プラズマ閉じ込め磁場に乱
れのない核融合装置を提供することである。
An object of the present invention is to reduce the component of the magnetic flux of an air-core current transformer coil that interlinks with the base to reduce eddy currents generated in the base, thereby providing a nuclear fusion device in which the plasma confinement magnetic field is not disturbed.
本発明は、上記目的を達成するために、真空容
器のトーラス方向に配置されプラズマと鎖交する
磁束を発生する空心変流器コイルを、ポロイダル
断面上、真空容器を取り巻くように配置される内
側空心変流器コイル群と、その外側を取り巻くよ
うに配置され内側空心変流器コイル群とは逆方向
に励磁される外側空心変流器コイル群とで構成し
たものである。
In order to achieve the above object, the present invention provides an air-core current transformer coil that is arranged in the torus direction of a vacuum vessel and generates a magnetic flux that interlinks with the plasma. It is composed of an air-core current transformer coil group and an outer air-core current transformer coil group that is arranged to surround the outside and is excited in the opposite direction to the inner air-core current transformer coil group.
このように内側空心変流器コイル群と外側空心
変流器コイル群とで互いに逆方向に電流が流れる
ようにすると、それらが作る磁束は外側空心変流
器コイル群の更に外側では互いに打ち消し合うの
で、ベースと鎖交する磁束は非常に少なくなる。
従つて、磁束の変化によりベースに生ずる渦電流
は極めて小さくなり、不整磁場は実質的に発生し
ない。その結果、プラズマ閉じ込め磁場の乱れの
ない核融合装置が得られる。
If current flows in opposite directions in the inner air-core current transformer coil group and the outer air-core current transformer coil group in this way, the magnetic fluxes they create will cancel each other out further outside the outer air-core current transformer coil group. Therefore, the magnetic flux interlinking with the base becomes extremely small.
Therefore, the eddy current generated in the base due to changes in magnetic flux becomes extremely small, and substantially no irregular magnetic field is generated. As a result, a fusion device without disturbance of the plasma confinement magnetic field can be obtained.
次に、第１図と第２図を参照して、本発明の実
施例を説明する。
Next, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
第１図は本発明の一実施例を示すポロイダル方
向の断面図である。図において、真空容器１０の
内部にはプラズマ１２が閉じ込められている。こ
の真空容器１０の小周方向にはトロイダルコイル
１４が配置され、真空容器１０のトーラス方向に
は、空心変流器コイル１６Ａ，１６Ｂが配置され
ている。空心変流器コイル１６Ａは、ポロイダル
断面上、外側の空心変流器コイル群を形成し、空
心変流器コイル１６Ｂは内側の空心変流器コイル
群を形成している。従つて、本実施例の空心変流
器コイルは、外側の空心変流器コイル１６Ａと内
側の空心変流器コイル１６Ｂとの二重構造になつ
ている。外側の空心変流器コイル１６Ａと内側の
空心変流器コイル１６Ｂとは互いに逆方向に電流
が流れるように接続されており、その結果起磁力
が互いに逆方向になるように構成されている。真
空容器１０およびコイル１４，１６Ａ，１６Ｂは
上下のベース２０，２２に支持されている。 FIG. 1 is a cross-sectional view in the poloidal direction showing one embodiment of the present invention. In the figure, plasma 12 is confined inside a vacuum vessel 10. A toroidal coil 14 is arranged in the circumferential direction of the vacuum vessel 10, and air-core current transformer coils 16A and 16B are arranged in the torus direction of the vacuum vessel 10. The air-core current transformer coil 16A forms an outer air-core current transformer coil group on the poloidal cross section, and the air-core current transformer coil 16B forms an inner air-core current transformer coil group. Therefore, the air-core current transformer coil of this embodiment has a double structure of an outer air-core current transformer coil 16A and an inner air-core current transformer coil 16B. The outer air-core current transformer coil 16A and the inner air-core current transformer coil 16B are connected so that currents flow in opposite directions, and as a result, the magnetomotive forces are configured to be in opposite directions. The vacuum vessel 10 and the coils 14, 16A, 16B are supported by upper and lower bases 20, 22.
このように構成された本実施例の作用は次の通
りである。 The operation of this embodiment configured in this way is as follows.
空心変流器コイル１６Ａ，１６Ｂとが作る磁束
Φは、第１図に示すようになり、磁束Φは空心変
流器コイル１６Ａの外側では互いに打ち消し合
い、ほとんどの磁束が外側の空心変流器コイル１
６Ａと内側の空心変流器コイル１６Ｂとの間にく
る。特にトーラスの中心側（真空容器１０の左
側）においては、大部分の磁束が外側の空心変流
器コイル１６Ａと内側の空心変流器コイル１６Ｂ
との間に位置するようになる。従つて、ベース２
０と鎖交する磁束は非常に少なくなる。この結
果、空心変流器コイル１６Ａ，１６Ｂの磁束Φの
変化によりベース２０に生ずる渦電流は極めて小
さくなり、不整磁場は実質上発生しない。 The magnetic flux Φ produced by the air-core current transformer coils 16A and 16B is as shown in FIG. coil 1
6A and the inner air-core current transformer coil 16B. Especially on the center side of the torus (left side of the vacuum vessel 10), most of the magnetic flux is distributed between the outer air-core current transformer coil 16A and the inner air-core current transformer coil 16B.
It will be located between. Therefore, base 2
The magnetic flux interlinking with 0 becomes extremely small. As a result, the eddy current generated in the base 20 due to the change in the magnetic flux Φ of the air-core current transformer coils 16A, 16B becomes extremely small, and substantially no irregular magnetic field is generated.
第２図は本発明の他の実施例を示すポロイダル
方向の断面図である。本実施例では、トロイダル
コイル１４が超電導コイルであり、このトロイダ
ルコイル１４の内側に一組の空心変流器コイル１
６Ａ，１６Ｂが配置されている。空心変流器コイ
ル１６Ａ，１６Ｂは第１図実施例と同様に互いに
逆方向に電流が流れるように接続されている。 FIG. 2 is a cross-sectional view in the poloidal direction showing another embodiment of the present invention. In this embodiment, the toroidal coil 14 is a superconducting coil, and a set of air-core current transformer coils 1 is installed inside the toroidal coil 14.
6A and 16B are arranged. The air-core current transformer coils 16A and 16B are connected so that current flows in opposite directions as in the embodiment of FIG.
従来、超電導コイルは強磁場内では大きな磁束
変化により熱を発生し常電導に戻り易いために使
用困難とされ、トロイダル磁場コイル１４ではト
ーラス中心側の磁場が強いため、この部分に時間
的に変化する空心変流器コイルの磁束があるのは
好ましくないとされていた。 Conventionally, superconducting coils have been considered difficult to use in a strong magnetic field because they generate heat due to large changes in magnetic flux and tend to return to normal conductivity.In the toroidal magnetic field coil 14, the magnetic field on the center side of the torus is strong, so there is a temporal change in this part. It was considered undesirable to have magnetic flux in the air-core current transformer coil.
これに対し、本実施例では、空心変流器コイル
を外側の空心変流器コイル１６Ａと内側の空心変
流器コイル１６Ｂとに分け、それぞれの電流方向
を互いに逆にしてあるので、磁束Φがトーラス中
心側でトロイダル磁場コイル１４と鎖交しない。
このため、本実施例の超電導コイルで構成された
トロイダルコイル１４は、熱損失が少なく安定に
動作する。 In contrast, in this embodiment, the air-core current transformer coil is divided into an outer air-core current transformer coil 16A and an inner air-core current transformer coil 16B, and the current directions of each are reversed, so that the magnetic flux Φ does not interlink with the toroidal magnetic field coil 14 on the torus center side.
Therefore, the toroidal coil 14 made of the superconducting coil of this embodiment operates stably with little heat loss.
第１図実施例と同様に本実施例においても、磁
束Φによるベース２０の渦電流発生が少なく、不
整磁場の発生もごくわずかなので、真空容器１０
内にプラズマ１２を安定して閉じ込めることがで
きるのはいうまでもない。 Similar to the embodiment shown in FIG. 1, in this embodiment as well, the generation of eddy current in the base 20 due to the magnetic flux Φ is small, and the generation of an irregular magnetic field is also very small.
Needless to say, it is possible to stably confine the plasma 12 inside.
本発明によれば、空心変流器コイルの磁束のう
ちベースと鎖交する成分が減りベースに生ずる渦
電流が激減するので、プラズマ閉じ込め磁場に乱
れのない核融合装置が得られる。
According to the present invention, the component of the magnetic flux of the air-core current transformer coil that interlinks with the base is reduced, and the eddy current generated in the base is drastically reduced, so that a nuclear fusion device without disturbance in the plasma confinement magnetic field can be obtained.
第１図は本発明による核融合装置の一実施例を
示すポロイダル方向の断面図、第２図はトロイダ
ルコイルに超電導コイルを用いる本発明の他の実
施例を示すポロイダル方向の断面図、第３図は従
来の核融合装置の一例を示す断面図である。
１０……真空容器、１２……プラズマ、１４…
…トロイダルコイル、１６……従来の空心変流器
コイル、１６Ａ……外側の空心変流器コイル、１
６Ｂ……内側の空心変流器コイル、１８……垂直
磁場コイル、２０，２２……ベース。
FIG. 1 is a cross-sectional view in the poloidal direction showing one embodiment of the nuclear fusion device according to the present invention, FIG. 2 is a cross-sectional view in the poloidal direction showing another embodiment of the present invention using a superconducting coil as the toroidal coil, and FIG. The figure is a sectional view showing an example of a conventional nuclear fusion device. 10... Vacuum container, 12... Plasma, 14...
...Toroidal coil, 16... Conventional air-core current transformer coil, 16A... Outer air-core current transformer coil, 1
6B... Inner air-core current transformer coil, 18... Vertical magnetic field coil, 20, 22... Base.
Claims (1)
と、真空容器のポロイダル方向に配置されプラズ
マを閉じ込める磁場を発生するトロイダルコイル
と、真空容器のトーラス方向に配置されプラズマ
と鎖交してプラズマを閉じ込め加熱する変化磁束
を発生する空心変流器コイルとを備えた核融合装
置において、空心変流器コイルが、ポロイダル断
面上、真空容器を取り巻くように配置される内側
空心変流器コイル群と、その外側を取り巻くよう
に配置され内側空心変流器コイル群とは逆方向に
励磁される外側空心変流器コイル群とからなるこ
とを特徴とする核融合装置。 ２ 特許請求の範囲第１項において、トロイダル
コイルが、前記外側空心変流器コイル群よりも外
側に配置される直径を有する超電導コイルからな
ることを特徴とする核融合装置。[Scope of Claims] 1. An annular vacuum container that encloses plasma inside, a toroidal coil that is arranged in the poloidal direction of the vacuum container and generates a magnetic field that confines the plasma, and a toroidal coil that is arranged in the torus direction of the vacuum container that connects the plasma. In a nuclear fusion device equipped with an air-core current transformer coil that generates a changing magnetic flux that confines and heats the plasma, the air-core current transformer coil has an inner air-core current transformer coil that is arranged to surround a vacuum vessel on a poloidal cross section. A nuclear fusion device comprising a current transformer coil group and an outer air-core current transformer coil group arranged to surround the outer side of the current transformer coil group and excited in a direction opposite to that of the inner air-core current transformer coil group. 2. The nuclear fusion device according to claim 1, wherein the toroidal coil is a superconducting coil having a diameter arranged outside the outer air-core current transformer coil group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10587079A JPS5630679A (en) | 1979-08-22 | 1979-08-22 | Nuclear fusion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10587079A JPS5630679A (en) | 1979-08-22 | 1979-08-22 | Nuclear fusion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5630679A JPS5630679A (en) | 1981-03-27 |
| JPS6122919B2 true JPS6122919B2 (en) | 1986-06-03 |
Family
ID=14418978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10587079A Granted JPS5630679A (en) | 1979-08-22 | 1979-08-22 | Nuclear fusion equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5630679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63196815U (en) * | 1987-06-09 | 1988-12-19 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189897A (en) * | 1984-03-09 | 1985-09-27 | 日立照明株式会社 | Device for firing discharge lamp |
| JPS6329497A (en) * | 1986-07-22 | 1988-02-08 | 大和電子工業株式会社 | Discharge lamp lighting circuit |
-
1979
- 1979-08-22 JP JP10587079A patent/JPS5630679A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63196815U (en) * | 1987-06-09 | 1988-12-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5630679A (en) | 1981-03-27 |
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