JPS5866308A - Manufacture of superconductive coil - Google Patents
Manufacture of superconductive coilInfo
- Publication number
- JPS5866308A JPS5866308A JP56164209A JP16420981A JPS5866308A JP S5866308 A JPS5866308 A JP S5866308A JP 56164209 A JP56164209 A JP 56164209A JP 16420981 A JP16420981 A JP 16420981A JP S5866308 A JPS5866308 A JP S5866308A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- bending
- conductor
- superconducting
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は核融合実験装置用超電導磁石などに用いられる
超電導コイルの製作方法に係り、特に、曲率の小さい曲
げ加工を施すに好適な超電導コイルの製作方゛法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a superconducting coil used in a superconducting magnet for a nuclear fusion experimental device, and more particularly to a method for manufacturing a superconducting coil suitable for bending with a small curvature.
一般に、小規模の超電導コイルは超電導線と安定化導体
を単に組み合わせた丸線または平角線を連続的に巻回す
ることによって製作されていたが、装置の大規模化に伴
ない超電導コイルのサイズも大きくなっている。この大
規模の超電導コイルには、平角安定化導体に穴加工や溝
加工を施し、これに超電導−を埋め込み、半田固着する
ことによって一体化したいわゆる平角、超電導体を採用
せざるを得ない。In general, small-scale superconducting coils were fabricated by simply winding a round or rectangular wire, which is simply a combination of superconducting wire and a stabilizing conductor, continuously. However, as the scale of equipment increases, the size of superconducting coils is also getting bigger. For this large-scale superconducting coil, it is necessary to use a so-called rectangular superconductor, which is made by drilling or grooving a rectangular stabilizing conductor, embedding superconductor therein, and bonding it with solder.
従来、超電導線を埋め込んだ平角超電導体−にてコイル
を製作する場合、段取り用のコイル受は板上に固定した
巻】を準備し、この巻型の周囲に前記平角超電導体を、
層間絶縁を入れながら順次巻回する。この巻回方法とし
てはエツジワイズ等あるいはフラットワイズ巻きが適宜
選択される。このようにして、巻回、曲げ加工された巻
線を公知の方法によって加熱圧縮させ、超電導体と層間
絶縁物とを接着してパンケーキコイルを完成させる。Conventionally, when manufacturing a coil using a rectangular superconductor in which a superconducting wire is embedded, a coil receiver for setup is prepared with a winding fixed on a plate, and the rectangular superconductor is placed around this winding form.
Wind it sequentially while adding interlayer insulation. As this winding method, edgewise winding or flatwise winding is appropriately selected. The thus wound and bent wire is heated and compressed by a known method, and the superconductor and interlayer insulator are bonded together to complete a pancake coil.
これらのパンケーキコイルを複数個積み重ね、コイル間
を公知の方法によって接続し、第1図に示される如き超
電導コイル1を製作するのが一般的である。そして、こ
のコイル1を形成する超電導体2の巻き始め部3、巻き
終り部4を、通常のコイルの巻回寸法R8より更に小さ
い曲げ寸法R1によって曲げ加工し、電流供給端子部と
するものである。Generally, a plurality of these pancake coils are stacked and the coils are connected by a known method to produce a superconducting coil 1 as shown in FIG. Then, the winding start part 3 and winding end part 4 of the superconductor 2 forming this coil 1 are bent with a bending dimension R1 smaller than the winding dimension R8 of a normal coil to form a current supply terminal part. be.
しかしながら、従来の製作方法では、第2図に示される
ように、安定化導体5内に半田!i16を介して埋め込
んだ超電導線7を一体化した状態で曲げ加工するため、
超電導線7の特性劣化を招くという問題を有している。However, in the conventional manufacturing method, as shown in FIG. In order to bend the superconducting wire 7 embedded through i16 in an integrated state,
This has the problem of causing deterioration of the characteristics of the superconducting wire 7.
即ち、平角超電導体2を巻回してコイル1を形成する場
合において、巻回時の曲げ加工(エツジワイズまたはフ
ラットクイズ方向)する際に生じる歪や応力を無視する
ことはできず、その歪、応力によって超電導#7に有害
な歪や応力が加わシ、超電導線7の特性劣化を生じ、巻
回後のコイル1のクエンチや通電容量の低下をもたらし
タシ、超電導線7の安定性を損うなどの問題がある。特
に、コイル1の電流供給端子となる巻き始め部3、巻き
終p部4の曲げ加工部位を付近は、前述したように、小
さい曲率で曲げ加工を施すため、この曲げ加工時に、第
2図矢印Aの如き方向に超電導線7が浮き上がシ、安定
化導体5と超電導flJ7とを接着している半田1#6
の剥離や、半田層6内でのクラックを伴なって、超電導
線7の特性劣化、巻回後のコイルのクエンチや通電容量
の低下をもたらしている。このような欠点は超電導体2
の巻回寸法R6や巻き始め部3および巻き終シ部4の加
工寸法R1が小さい程著しいものである。That is, when forming the coil 1 by winding the rectangular superconductor 2, the strain and stress that occur during the bending process (edgewise or flat quiz direction) during winding cannot be ignored; This applies harmful strain and stress to the superconductor #7, causing deterioration of the characteristics of the superconducting wire 7, causing quenching of the coil 1 after winding, a decrease in current carrying capacity, and impairing the stability of the superconducting wire 7. There is a problem. In particular, the bending parts near the winding start part 3 and the winding end p part 4, which are the current supply terminals of the coil 1, are bent with a small curvature as described above. The superconducting wire 7 floats in the direction shown by the arrow A, and the solder 1#6 bonding the stabilizing conductor 5 and the superconducting flJ7
This is accompanied by peeling of the solder layer 6 and cracks within the solder layer 6, resulting in deterioration of the characteristics of the superconducting wire 7, quenching of the coil after winding, and reduction in current carrying capacity. These drawbacks are superconductor 2
The smaller the winding dimension R6 and the processing dimension R1 of the winding start portion 3 and the winding end portion 4, the more remarkable this is.
このように、小型の超電導コイルにおける超電導体は小
さな丸線または角線で供給されるため、曲げ加工による
歪、応力の発生は小さく、殆んど実用上の問題を生じな
かったが、大容量化に伴なって超電導体の大型化によシ
、歪、応力の発生による特性劣化の問題がますます顕在
化してきた。In this way, the superconductor in small superconducting coils is supplied in the form of small round or square wires, so the strain and stress caused by bending is small, causing almost no practical problems. As superconductors become larger, the problem of deterioration of their characteristics due to cracks, strain, and stress has become increasingly apparent.
本発明は上記従来の問題点に着目し、超電導コイルを4
径するに際し、曲げ加工時に超−導線に加わる歪、応力
を可及的小ならしめ、特性劣化の生じない超電導コイル
−の製作方法を提供することを目的とする。The present invention focuses on the above-mentioned conventional problems and has developed a superconducting coil using four superconducting coils.
It is an object of the present invention to provide a method for manufacturing a superconducting coil in which the strain and stress applied to the superconducting wire during bending are minimized and the characteristics do not deteriorate.
上記目的を達成するために、本発明に係る超電導コイル
の製作方法は、超電導体の曲げ加工部位にて、埋め込ま
れた超電導線を予め安定化導体から分離させ、安定化導
体のみを曲げ成形した後、この曲げ成形された安定化導
体に沿って予め分離されている超電導線を再度埋め直し
固着するように構成し、安定化導体の曲げ加工に伴なう
歪、応力が超電導線に伝播しないようにし、もって超電
導線の特性劣化が生じないようにしたものである。In order to achieve the above object, the method for manufacturing a superconducting coil according to the present invention involves separating the embedded superconducting wire from the stabilizing conductor in advance at the bending part of the superconductor, and bending and forming only the stabilizing conductor. After that, the superconducting wires that have been separated in advance are reburied and fixed along this bent stabilizing conductor, so that the strain and stress caused by the bending of the stabilizing conductor will not propagate to the superconducting wires. This is to prevent deterioration of the characteristics of the superconducting wire.
以下に本発明の実施例を、コイル1の巻き始め部3を曲
げ加工する場合について、図面を参照しながら詳細に説
明する。Embodiments of the present invention will be described in detail below with reference to the drawings, regarding the case where the winding start portion 3 of the coil 1 is bent.
本実施例に係る製作方法において、コイル1の電流供給
端子となる巻き始め部3は、曲げ加工直前では、安定化
導体5に形成された溝8内に半田層6を介して超電導線
7を埋め込んだ超電導体2からなる棒状とされている。In the manufacturing method according to this embodiment, the winding start portion 3 that becomes the current supply terminal of the coil 1 is formed by inserting the superconducting wire 7 into the groove 8 formed in the stabilizing conductor 5 through the solder layer 6 immediately before the bending process. It has a rod shape made of embedded superconductors 2.
−
このような超電導体2の巻き始め部3において、曲げ加
工する前に、予め、安定化導体5の溝8から、超電導線
7を曲げ加工する長さt(第1図参照)相当分だけ分離
して浮かすようにするものである。即ち、超電導体2の
端部を高周波加熱などの公知の方法によって、半田溶融
温度まで加熱し、半田層6を溶融させ、溝8内の超電導
線7を長さ4寸法だけ端部から少しずつ持ち上げて、第
3図に示されるように、長さt寸法相当分だけを受かす
。そして、安定化導体5の溝8内に残った半田6を入念
に掃除する。- At the winding start portion 3 of such a superconductor 2, before bending the superconducting wire 7 from the groove 8 of the stabilizing conductor 5 by the length t (see Figure 1) equivalent to the bending process. It separates and floats. That is, the end of the superconductor 2 is heated to the solder melting temperature by a known method such as high-frequency heating, the solder layer 6 is melted, and the superconducting wire 7 in the groove 8 is gradually heated by four lengths from the end. Lift it up and receive only the length t as shown in FIG. Then, the solder 6 remaining in the groove 8 of the stabilizing conductor 5 is carefully cleaned.
しかる後、超電導線7を分離させた安定化導体5のみに
、ベンダーなどによシ曲げ加工を施すものである。この
安定化導体5の曲げ加工は、巻き始め部3が必要とする
曲げ量相当分施せばよい。Thereafter, only the stabilized conductor 5 from which the superconducting wire 7 has been separated is bent using a bender or the like. The stabilizing conductor 5 may be bent by an amount corresponding to the amount of bending required by the winding start portion 3.
その後、溝8の開口部寸法を手仕上にて修正外直し後、
この溝8に沿って予め分離させた超電導線7を、高周波
加熱などによシ、半田溶融温度に加熱しながら挿入し、
半田層6によって再固着する。このとき、超電導#i!
7は半田溶融温度に加温されておシ、シかも、細くて曲
げ加工し易い状態にあるため、曲げ加工された時にも内
部に発生する歪や応力も小さい状態で半田層6によって
再固着される。After that, the opening dimensions of the groove 8 were manually corrected and adjusted.
The superconducting wire 7 separated in advance along this groove 8 is inserted while being heated to the solder melting temperature using high frequency heating or the like.
It is fixed again by the solder layer 6. At this time, superconducting #i!
7 is heated to the solder melting temperature and is thin and easy to bend, so it is re-fixed by the solder layer 6 with little strain or stress generated inside when it is bent. be done.
このようにして超電導fm7を溝8に埋め込み再固着し
たのち、溝8の開口部に蓋9を装着し、密閉することに
よって曲げ加工が終了する。After the superconducting fm7 is embedded in the groove 8 and re-fixed in this way, the lid 9 is attached to the opening of the groove 8 and the opening is sealed, thereby completing the bending process.
このように、本実施例によれば、予め安定化導体5から
超電導線7を分離しておき、曲げ加工を安定化導体5、
超電導線7に対し別々に実施するので、従来の如く、直
接超電導体2を曲げ加工することによって生じる歪や応
力が超電導線7に伝播されることが防止される。したが
って、超電導線7の特性劣化や電流容量の低下などの欠
点を改善することができる。特に、溝8に再固着する際
の曲げ加工によって発生する超電導線7への歪や応力は
非常に小さいので、特性にすぐれた超電導コイル1を製
作することができる。また、加えて複雑な形状部であっ
て、曲げ加工時に異常な歪や応力の発生する部分につい
ても、同様な要領で加工できるので、特性劣化を生じる
ことはない。As described above, according to this embodiment, the superconducting wire 7 is separated from the stabilizing conductor 5 in advance, and the bending process is performed on the stabilizing conductor 5,
Since the bending is performed separately on the superconducting wire 7, the strain and stress caused by directly bending the superconductor 2 are prevented from being propagated to the superconducting wire 7, as in the conventional method. Therefore, defects such as deterioration of characteristics of the superconducting wire 7 and reduction in current capacity can be improved. In particular, since the strain and stress on the superconducting wire 7 caused by the bending process when reattaching it to the groove 8 are very small, it is possible to manufacture a superconducting coil 1 with excellent characteristics. In addition, portions with complex shapes where abnormal strain or stress occurs during bending can be processed in the same manner, so that no deterioration of characteristics occurs.
以上説明したように、本発明によれば、曲げ加工時に超
電導線に加わる歪、応力を可及的小ならしめることがで
き、特性劣化の生じない超電導コイルを製作することが
可能となる。As described above, according to the present invention, it is possible to minimize the strain and stress applied to the superconducting wire during bending, and it is possible to manufacture a superconducting coil that does not suffer from characteristic deterioration.
第1図は超電導コイルの平面図、第2図は超電導体の部
分断面図、第3図は安定化導体から超電導線を分離した
状態を示す斜視図、第4図は再固着後の超電導体の部分
断面図である。Figure 1 is a plan view of the superconducting coil, Figure 2 is a partial sectional view of the superconductor, Figure 3 is a perspective view showing the superconducting wire separated from the stabilizing conductor, and Figure 4 is the superconductor after re-fixation. FIG.
Claims (1)
電導体を巻回し超電導コイルを製作する方法において、
前記超電導コイルの巻き始め部、巻き終り部など超電導
体の曲げ加工部位にて、埋め込まれた超電導線を予め安
定化導体から分離させ、安定化導体のみを曲げ成形した
後、当該曲げ成形された安定化導体に沿って前記分離さ
せた超電導線を再度埋め直し固着することを特徴とする
超電導コイルの製作方法。1. B made by embedding and fixing superconducting wires in a stabilizing conductor
In a method of manufacturing a superconducting coil by winding a conductor,
The embedded superconducting wire is separated from the stabilizing conductor in advance at the bending part of the superconductor, such as the winding start part and the winding end part of the superconducting coil, and only the stabilizing conductor is bent and formed. A method for manufacturing a superconducting coil, comprising reburying and fixing the separated superconducting wire along a stabilizing conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56164209A JPS5866308A (en) | 1981-10-16 | 1981-10-16 | Manufacture of superconductive coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56164209A JPS5866308A (en) | 1981-10-16 | 1981-10-16 | Manufacture of superconductive coil |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5866308A true JPS5866308A (en) | 1983-04-20 |
Family
ID=15788733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56164209A Pending JPS5866308A (en) | 1981-10-16 | 1981-10-16 | Manufacture of superconductive coil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5866308A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108140714A (en) * | 2015-09-09 | 2018-06-08 | 托卡马克能量有限公司 | HTS magnet subregions |
-
1981
- 1981-10-16 JP JP56164209A patent/JPS5866308A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108140714A (en) * | 2015-09-09 | 2018-06-08 | 托卡马克能量有限公司 | HTS magnet subregions |
JP2018536980A (en) * | 2015-09-09 | 2018-12-13 | トカマク エナジー リミテッド | HTS magnet section |
CN108140714B (en) * | 2015-09-09 | 2020-03-31 | 托卡马克能量有限公司 | Assembly for carrying an electric current in a coil of a magnet, field coil and segment comprising such an assembly, and method for the production thereof |
US10930837B2 (en) | 2015-09-09 | 2021-02-23 | Tokamak Energy Ltd | HTS magnet sections |
US11575078B2 (en) | 2015-09-09 | 2023-02-07 | Tokamak Energy Ltd | HTS magnet sections |
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