JP3030416B2 - Superconducting coil - Google Patents
Superconducting coilInfo
- Publication number
- JP3030416B2 JP3030416B2 JP23803489A JP23803489A JP3030416B2 JP 3030416 B2 JP3030416 B2 JP 3030416B2 JP 23803489 A JP23803489 A JP 23803489A JP 23803489 A JP23803489 A JP 23803489A JP 3030416 B2 JP3030416 B2 JP 3030416B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting coil
- superconducting
- woven fabric
- insulating tape
- composite conductor
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 （技術分野） この発明は、超電導コイルに関するものである。さら
に詳しくは、この発明は、ターン間絶縁物として使用す
る絶縁テープのしわの発生を防止し、機械的強度と電気
的特性を向上させることのできる超電導コイルに関する
ものである。Description: TECHNICAL FIELD The present invention relates to a superconducting coil. More specifically, the present invention relates to a superconducting coil which can prevent wrinkles of an insulating tape used as an inter-turn insulator and can improve mechanical strength and electrical characteristics.
（背景技術） 超電導コイルは、発生磁界や電流密度が常電導コイル
に比べて非常に高いので、核融合炉や高エネルギー粒子
加速器等において重要な要素手段となっている。(Background Art) A superconducting coil is an important element means in a nuclear fusion reactor, a high energy particle accelerator, and the like because a generated magnetic field and a current density are much higher than a normal conducting coil.
通常、このような超電導コイルには、高い電流密度を
できるかぎりコンパクトな設計で実現できるように大き
な機械的強度と高い電気絶縁性とが必要とされている。
このため、通常は第２図に示したように、超電導コイル
（１）は、その巻線部（２）が多心細線超電導線（３）
の周囲に強制冷凍導体（４）を配した矩形断面を有する
超電導線複合導体（５）の巻線とターン間絶縁物（６）
からなっている。Usually, such superconducting coils are required to have high mechanical strength and high electrical insulation so that a high current density can be realized with a design as compact as possible.
For this reason, as shown in FIG. 2, usually, the superconducting coil (1) has a winding part (2) whose multifilamentary wire superconducting wire (3).
Winding of superconducting wire composite conductor (5) having a rectangular cross-section with forced refrigeration conductor (4) arranged around coil and insulator between turns (6)
Consists of
この場合、ターン間絶縁物（６）は、巻線間を電気的
に絶縁するとともに巻線を相互に固定し、巻線部（２）
を一体化し、機械的剛性を強化する機能も有している。
このようなターン間絶縁物（６）の材料としては、巻線
を安定に堅固に固定化できるものから選ぶことが必要と
される。そこで従来は、ターン間絶縁物（６）の材料と
して一般的にガラス布にエポキシ樹脂を塗布した絶縁テ
ープを使用し、巻線とガラス布とエポキシ樹脂とを一体
化して複合化することが考えられている。In this case, the inter-turn insulator (6) electrically insulates between the windings and fixes the windings to each other.
And has the function of enhancing mechanical rigidity.
The material of the inter-turn insulator (6) needs to be selected from those capable of stably and firmly fixing the winding. Conventionally, it is considered that an insulating tape obtained by applying an epoxy resin to a glass cloth is generally used as a material of the inter-turn insulator (6), and the winding, the glass cloth, and the epoxy resin are integrated into a composite. Have been.
しかしながら、ガラス布にエポキシ樹脂を塗布した従
来の絶縁テープは伸縮性が小さいため、第３図に示した
ように矩形断面の超電導線複合導体（５）からなる巻線
の周囲に絶縁テープ（７）を巻き付けていくとしわ
（８）が発生する。このしわ（８）が発生すると巻線を
相互に固定化する強度が低くなり、巻線部（２）を複合
材料として一体化することができなくなり、コイルの機
械的強度が低下する。また、しわ（８）の発生は巻線間
の電気的絶縁性も低下させる。However, since the conventional insulating tape formed by applying an epoxy resin to a glass cloth has a small elasticity, as shown in FIG. 3, the insulating tape (7) is wound around the winding made of the superconducting wire composite conductor (5) having a rectangular cross section. ) Is wound, wrinkles (8) occur. When the wrinkles (8) are generated, the strength for fixing the windings to each other becomes low, and the winding part (2) cannot be integrated as a composite material, and the mechanical strength of the coil decreases. The generation of wrinkles (8) also reduces the electrical insulation between the windings.
このため、従来の超電導コイルにおいては、十分に高
い機械的強度と優れた電気的特性を得ることが困難であ
った。For this reason, it has been difficult for conventional superconducting coils to obtain sufficiently high mechanical strength and excellent electrical characteristics.
（発明の目的） この発明は、以上の通りの事情を踏まえてなされたも
のであり、絶縁テープのしわの発生を防止し、機械的強
度と電気的特性を向上させた超電導コイルを提供するこ
とを目的としている。(Purpose of the Invention) The present invention has been made in view of the above circumstances, and provides a superconducting coil that prevents wrinkling of an insulating tape and has improved mechanical strength and electrical characteristics. It is an object.
（発明の開示） この発明は、上記の目的を実現するため、矩形断面を
有する超電導線複合導体を巻線とし、伸縮性織布に樹脂
を塗布または含浸させた絶縁テープをターン間絶縁物と
して超電導線複合導体の周囲に巻き付けてなることを特
徴とする超電導コイルを提供する。DISCLOSURE OF THE INVENTION In order to achieve the above object, the present invention provides a superconducting wire composite conductor having a rectangular cross section as a winding, and an insulating tape obtained by applying or impregnating a stretchable woven fabric with a resin as an inter-turn insulator. Provided is a superconducting coil characterized by being wound around a superconducting wire composite conductor.
この発明の超電導コイルは、第２図に示した従来の超
電導コイルと同様に、矩形断面を有する超電導線複合導
体（５）を巻線とし、その巻線間にターン間絶縁物
（６）を配したものであるが、従来の超電導コイルとは
異なり、ターン間絶縁物（６）の材料として伸縮性織布
に樹脂を塗布または含浸させた絶縁テープを使用するこ
とを特徴としている。このようにターン間絶縁物（６）
の材料として伸縮性の高い上記絶縁テープを使用するこ
とにより、超電導線複合導体（５）からなる巻線が鋭い
角の矩形断面を有していても、第１図に示したように、
絶縁テープ（７′）を超電導線複合導体（５）の周囲に
均一に巻き付けることができ、第３図に示したようなし
わ（８）の発生を防止することができる。このため絶縁
テープ（７′）を所定の設計寸法通りに巻線間に配する
ことができ、高い電気的特性が得られる。また、超電導
線複合導体（５）と伸縮性織布とエポキシ樹脂とを一体
化して複合化するので、機械的強度が著しく向上する。The superconducting coil of the present invention has a superconducting wire composite conductor (5) having a rectangular cross section as a winding, and an inter-turn insulator (6) between the windings, similarly to the conventional superconducting coil shown in FIG. Although it is arranged, unlike the conventional superconducting coil, it is characterized in that an insulating tape obtained by applying or impregnating a stretchable woven fabric with a resin is used as a material of the inter-turn insulator (6). Thus, the inter-turn insulator (6)
By using the above-mentioned insulating tape having high elasticity as the material of the above, even if the winding made of the superconducting wire composite conductor (5) has a rectangular cross section with sharp corners, as shown in FIG.
The insulating tape (7 ') can be uniformly wound around the superconducting wire composite conductor (5), and the occurrence of wrinkles (8) as shown in FIG. 3 can be prevented. Therefore, the insulating tape (7 ') can be arranged between the windings according to a predetermined design dimension, and high electrical characteristics can be obtained. Further, since the superconducting wire composite conductor (5), the stretchable woven fabric, and the epoxy resin are integrated into a composite, the mechanical strength is significantly improved.
この発明において、絶縁テープ（７′）に使用する織
布の織地としては、伸縮性のものであれば特に制限はな
く、たとえば朱子織または綾織のものを用いることがで
きる。In the present invention, the fabric of the woven fabric used for the insulating tape (7 ') is not particularly limited as long as it is stretchable, and for example, a satin weave or a twill weave can be used.
織布の素材としても、巻線部（２）を堅固に一体化で
きるものであれば特に制限はなく、たとえば、ガラス繊
維やケブラー繊維を使用することができる。There is no particular limitation on the material of the woven fabric as long as the winding part (2) can be firmly integrated. For example, glass fiber or Kevlar fiber can be used.
また、織布に塗布または含浸させる樹脂としては、織
布の相俟って巻線部（２）を堅固に一体化できるもので
あれば特に制限はなく、たとえば、エポキシ系樹脂やポ
リイミド系樹脂を使用することができる。The resin to be applied to or impregnated into the woven fabric is not particularly limited as long as the winding portion (2) can be firmly integrated with the woven fabric. For example, an epoxy resin or a polyimide resin Can be used.
以下、この発明を実施例に基づいて具体的に説明す
る。Hereinafter, the present invention will be specifically described based on examples.
実施例 絶縁テープとして朱子織のガラス繊維にエポキシ系樹
脂を塗布し、この絶縁テープを多心細線超電導線と強制
冷凍導体からなる矩形断面の超電導線複合導体に巻き付
け、厚さ1mm、16層のターン間絶縁物を形成し、超電導
コイルを作製した。Example An epoxy resin was applied to satin glass fiber as an insulating tape, and the insulating tape was wrapped around a superconducting wire composite conductor having a rectangular cross section composed of a multi-core fine wire superconducting wire and a forced frozen conductor, having a thickness of 1 mm and a thickness of 16 layers. An inter-turn insulator was formed to produce a superconducting coil.
この結果、作製公差以下の寸法で均一に絶縁テープを
巻き付けることができ、超電導コイルに所定の電気絶縁
性と優れた機械的剛性を発揮させることができる。As a result, the insulating tape can be uniformly wound with a dimension equal to or smaller than the manufacturing tolerance, and the superconducting coil can exhibit predetermined electrical insulation and excellent mechanical rigidity.
比較例 絶縁テープとして従来のものを使用し、実施例と同様
に、厚さ1mm、16層のターン間絶縁物の形成を意図して
超電導コイルを作製したところ、しわが発生し、ターン
間絶縁物の厚さは1.25mmになり、平均2mmの膨れが生じ
た。これはしわの発生により0.25mmの空隙が生じたこと
を意味する。Comparative Example A conventional superconducting coil was manufactured using a conventional insulating tape and forming a 1 mm thick, 16 layer inter-turn insulator in the same manner as in the example. The thickness of the object became 1.25 mm, and an average blister of 2 mm occurred. This means that a gap of 0.25 mm was generated due to the generation of wrinkles.
この超電導コイルは、電気的特性も機械的剛性も実施
例の超電導コイルに比べて劣っていた。This superconducting coil was inferior in both electrical characteristics and mechanical rigidity to the superconducting coil of the example.
（発明の効果） この発明により、超電導コイルの巻線部の機械的剛性
を向上させることができ、また、巻線間の電気的絶縁性
も向上する。そのため、超電導コイルの電流密度を高く
することが可能となり、また設計仕様をコンパクトにす
ることも可能となる。(Effect of the Invention) According to the present invention, the mechanical rigidity of the winding portion of the superconducting coil can be improved, and the electrical insulation between the windings is also improved. Therefore, the current density of the superconducting coil can be increased, and the design specification can be made compact.
第１図は、超電導線複合導体にこの発明の絶縁テープを
巻き付けたものの側面図である。 第２図は、巻線部を部分拡大した超電導コイルの断面斜
視図である。 第３図は、超電導線複合導体に従来の絶縁テープを巻き
付けものの側面図である。 １……超電導コイル ２……巻線部 ３……多心細線超電導線 ４……強制冷凍導体 ５……超電導線複合導体 ６……ターン間絶縁物 ７、７′……絶縁テープ ８……しわFIG. 1 is a side view of a superconducting wire composite conductor wound with an insulating tape of the present invention. FIG. 2 is a sectional perspective view of a superconducting coil in which a winding portion is partially enlarged. FIG. 3 is a side view of a superconducting wire composite conductor wound with a conventional insulating tape. DESCRIPTION OF SYMBOLS 1 ... Superconducting coil 2 ... Winding part 3 ... Multi-core thin wire superconducting wire 4 ... Forced refrigeration conductor 5 ... Superconducting wire composite conductor 6 ... Interturn insulator 7, 7 '... Insulating tape 8 ... Wrinkles
───────────────────────────────────────────────────── フロントページの続き (72)発明者 辻 博史 茨城県那珂郡那珂町向山字中原801番地 の１ 日本原子力研究所那珂研究所内 (72)発明者 安藤 俊就 茨城県那珂郡那珂町向山字中原801番地 の１ 日本原子力研究所那珂研究所内 (72)発明者 星野 尚 新潟県上越市大字岩木2199番地３ (56)参考文献 特開 昭57−128908（ＪＰ，Ａ) 特開 昭54−32094（ＪＰ，Ａ) 特開 昭53−141401（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01F 5/06,6/06 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Tsuji 801 Nakahara, Naka-cho, Naka-gun, Naka-gun, Ibaraki Prefecture Inside of the Naka Research Laboratory, Japan Atomic Energy Research Institute (72) Inventor, Toshitake Ando, Naka-cho, Naka-gun, Naka-gun, Ibaraki No. 801 Nakahara 1 Naka Research Institute of Japan Atomic Energy Research Institute (72) Inventor Takashi Hoshino 2199-3 Oki, Joetsu-shi, Niigata Prefecture (56) References JP-A-57-128908 (JP, A) JP-A-54-32094 (JP, A) JP-A-53-141401 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01F 5/06, 6/06
Claims (4)
とし、伸縮性織布に樹脂を塗布または含浸させた絶縁テ
ープをターン間絶縁物として超電導線複合導体の周囲に
巻き付けてなることを特徴とする超電導コイル。1. A superconducting wire composite conductor having a rectangular cross section is used as a film wire, and an insulating tape obtained by applying or impregnating a stretchable woven fabric with a resin is wound around the superconducting wire composite conductor as an inter-turn insulator. Features superconducting coil.
してなる請求項（１）記載の超電導コイル。2. The superconducting coil according to claim 1, wherein the elastic woven fabric is formed of satin weave or twill weave.
維により形成してなる請求項（１）または（２）記載の
超電導コイル。3. The superconducting coil according to claim 1, wherein the stretchable woven fabric is formed of glass fiber or Kevlar fiber.
ミド系樹脂を塗布または含浸させてなる請求項（１）な
いし（３）いずれかに記載の超電導コイル。4. The superconducting coil according to claim 1, wherein the elastic woven fabric is coated or impregnated with an epoxy resin or a polyimide resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23803489A JP3030416B2 (en) | 1989-09-12 | 1989-09-12 | Superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23803489A JP3030416B2 (en) | 1989-09-12 | 1989-09-12 | Superconducting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0399407A JPH0399407A (en) | 1991-04-24 |
| JP3030416B2 true JP3030416B2 (en) | 2000-04-10 |
Family
ID=17024189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23803489A Expired - Lifetime JP3030416B2 (en) | 1989-09-12 | 1989-09-12 | Superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3030416B2 (en) |
-
1989
- 1989-09-12 JP JP23803489A patent/JP3030416B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0399407A (en) | 1991-04-24 |
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