JPH04123404A - Superconductor coil - Google Patents
Superconductor coilInfo
- Publication number
- JPH04123404A JPH04123404A JP24249790A JP24249790A JPH04123404A JP H04123404 A JPH04123404 A JP H04123404A JP 24249790 A JP24249790 A JP 24249790A JP 24249790 A JP24249790 A JP 24249790A JP H04123404 A JPH04123404 A JP H04123404A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- enamel film
- thickness
- superconducting
- wire
- 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.)
- Granted
Links
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
- Superconductive Dynamoelectric Machines (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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、磁気共鳴イメージング装置等の電気機器に用
いる超電導コイル及びその含浸樹脂に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a superconducting coil used in electrical equipment such as a magnetic resonance imaging apparatus and a resin impregnated therewith.
（従来の技術）
樹脂を含浸して固めた超電導コイルについては、例えば
森山、他： 「速応励磁形１００ＫＶＡ超電導発電機の
界磁巻線絶縁の検討」電気学会第２２回電気絶縁材料シ
ンポジウムＰ −１１（１９８９）の文献が知られてい
る。この種の超電導コイルについて第２図を参照して説
明する。第２図は超電導コイルの部分断面図を示すもの
で、（１）は絶縁導線であり、多重に巻回してコイルに
成形しである。絶縁導線（１）は超電導線（２）をエナ
メル皮膜（３）で覆ったものである。隣接する絶縁導線
（１）の間には樹脂（４）が含浸してあり、また樹脂（
４）は硬化しである。エナメル皮膜（３）と樹脂（４）
は互いが接する界面で接着している。(Prior art) Regarding superconducting coils impregnated with resin and hardened, see, for example, Moriyama, et al.: "Study of field winding insulation for rapid excitation type 100KVA superconducting generator" 22nd Electrical Insulating Materials Symposium of the Institute of Electrical Engineers of Japan, P. -11 (1989) is known. This type of superconducting coil will be explained with reference to FIG. FIG. 2 shows a partial sectional view of a superconducting coil, in which (1) is an insulated conductive wire that is wound multiple times and formed into a coil. The insulated conductive wire (1) is a superconducting wire (2) covered with an enamel film (3). A resin (4) is impregnated between adjacent insulated conductive wires (1).
4) is cured. Enamel film (3) and resin (4)
are bonded at the interface where they touch each other.
（発明が解決しようとする課題）
上記構成の従来の超電導コイルにおいては、電磁力や室
温と極低温の間のサイクルなどにより、エナメル皮膜（
３）と樹脂（４）の接着界面で剥離することがある。剥
離した場合、超電導線（２）のクエンチを伴うことが懸
念される。また、剥離部分は真空断熱に近い状態となる
ため、超電導線（２）の冷却を阻害する。(Problems to be Solved by the Invention) In the conventional superconducting coil having the above configuration, the enamel film (
3) and resin (4) may peel off at the adhesive interface. If peeled off, there is a concern that the superconducting wire (2) will be quenched. Furthermore, since the peeled portion is in a state close to vacuum insulation, cooling of the superconducting wire (2) is inhibited.
本発明は、エナメル皮膜と樹脂を強く結合させることに
より、クエンチの発生及び冷却の阻害を抑えた超電導コ
イルを提供することを目的とする。An object of the present invention is to provide a superconducting coil that suppresses occurrence of quenching and inhibition of cooling by strongly bonding an enamel film and a resin.
［発明の構成コ
（課題を解決するための手段）
上記目的を達成するために本発明は、超電導線をエナメ
ル皮膜で覆って絶縁導線とし、該絶縁導線を多重に巻回
し隣接する絶縁導線間に樹脂を含浸し硬化してなる超電
導コイルにおいて、含浸あるいは硬化の際に前記樹脂を
エナメル皮膜の表面部分に浸透させる。[Structure of the Invention (Means for Solving the Problems) In order to achieve the above object, the present invention covers a superconducting wire with an enamel film to form an insulated conductor, and winds the insulated conductor in multiple layers to form a wire between adjacent insulated conductors. In a superconducting coil obtained by impregnating and curing a resin, the resin permeates into the surface portion of the enamel film during impregnation or curing.
（作 用）
上記のように構成することにより、樹脂が浸透した表面
部分ではエナメル皮膜と樹脂が立体的（３次元的）に結
合する。この結合は第２図の中に示した界面での接着（
２次元的な結合）に比べ強くなる。また、樹脂を浸透さ
せる部分はエナメル皮膜の表面部分に限定したため、残
りのエナメル皮膜としての性能を保持する。(Function) By configuring as described above, the enamel film and the resin are bonded three-dimensionally (three-dimensionally) in the surface portion where the resin has penetrated. This bonding occurs at the interface shown in Figure 2 (
stronger than a two-dimensional bond). Furthermore, since the portion into which the resin is permeated is limited to the surface portion of the enamel film, the performance of the remaining enamel film is maintained.
（実施例）
以下、本発明の一実施例について第１図を参照して説明
する。第１図は超電導コイルの部分断面図であり、（１
１）は絶縁導線であり、多重に巻回してコイルに成形し
である。絶縁導線（１１）は超電導線（１２）をエナメ
ル皮膜（１３）で覆ったものである。(Example) Hereinafter, an example of the present invention will be described with reference to FIG. Figure 1 is a partial cross-sectional view of a superconducting coil (1
1) is an insulated conductor wire that is wound multiple times and formed into a coil. The insulated conductive wire (11) is a superconducting wire (12) covered with an enamel film (13).
エナメル皮膜（１３）の厚さは３〜１００μｍにしてあ
り、エナメル皮膜（１３）の材質はホルマール樹脂にし
である。隣接する絶縁導線（１１）の間には樹脂（１４
）が含浸してあり、また、樹脂（１４）は加熱硬化しで
ある。樹脂（Ｉ４）の成分は、ビスフェノール形エポキ
シの主剤、酸無水物の硬化剤、第３アミンの硬化促進剤
、その他の添加剤にしである。エナメル皮膜（１３）の
表面部分は、含浸あるいは硬化の際に樹脂（１４）を浸
透させ浸透部分（１５）を形成しである。浸透部分（１
５）の厚さはエナメル皮膜（１３）の厚さの２０％以下
にしである。The thickness of the enamel film (13) is 3 to 100 μm, and the material of the enamel film (13) is formal resin. A resin (14) is placed between adjacent insulated conductive wires (11).
), and the resin (14) is heat-cured. The components of the resin (I4) are a bisphenol type epoxy base agent, an acid anhydride curing agent, a tertiary amine curing accelerator, and other additives. The surface portion of the enamel film (13) is impregnated with a resin (14) during impregnation or hardening to form a permeated portion (15). Penetration part (1
The thickness of 5) is 20% or less of the thickness of the enamel film (13).
次に上記構成の作用について説明する。エナメル皮膜（
１３）の材質はホルマール樹脂にしであるため、例えば
エステルイミドに比べ樹脂（１４）の浸透性、極低温で
の耐クラツク性、超電導線（１２）との密着性などに優
れている。しかも、樹脂（１４）の成分はビスフェノー
ル形エポキシの主剤、酸無水物の硬化剤、第３アミンの
硬化促進剤、その他の添加剤にしであるため、浸透部分
（１５）は適度な厚さになっている。浸透部分（１５）
では樹脂（１４）がエナメル皮膜（１３）に浸透してい
るため、エナメル皮膜（１３）と樹脂（１４）が立体的
に連結している。浸透部分（１５）とその内側のエナメ
ル皮膜（１３）は一体であるため、互いの結合は接着し
た場合に比べて強くなっている。浸透部分（１５）とそ
の外側の樹脂（１４）は硬化時に化学反応しているため
、互いの結合は異種材が接着した場合に比べ強くなって
いる。浸透部分（１５）の厚さはエナメル皮膜（１３）
の厚さの２０％以下にしであるため、残りの厚さ８０％
以上のエナメル皮膜（１３）が皮膜としての性能、例え
ば優れた耐クラツク性を有している。Next, the operation of the above configuration will be explained. Enamel film (
Since the material 13) is formal resin, it has superior permeability to the resin (14), resistance to cracking at extremely low temperatures, adhesion to the superconducting wire (12), etc., compared to, for example, esterimide. Moreover, since the resin (14) consists of a bisphenol-type epoxy base agent, an acid anhydride curing agent, a tertiary amine curing accelerator, and other additives, the penetration part (15) has an appropriate thickness. It has become. Penetration part (15)
Since the resin (14) has penetrated into the enamel film (13), the enamel film (13) and the resin (14) are three-dimensionally connected. Since the permeable part (15) and the enamel film (13) inside it are integral, their bond to each other is stronger than if they were glued together. Since the permeable portion (15) and the resin (14) on the outside undergo a chemical reaction during curing, the bond between them is stronger than when dissimilar materials are bonded together. The thickness of the penetration part (15) is the enamel film (13)
Since the thickness is less than 20%, the remaining thickness is 80%.
The above enamel film (13) has properties as a film, such as excellent crack resistance.
以上説明したように、エナメル皮膜（１３）と浸透部分
（Ｉ５）、及び浸透部分（Ｉ５）と樹脂（Ｉ４）は強く
結合しているため、超電導線（１２）の近傍では容易に
剥離することがない。エナメル皮膜（１３）の材質はホ
ルマール樹脂にしてあり、しかも、樹脂（１４）の成分
はビスフェノール形エポキシの主剤、酸無水物の硬化剤
、第３アミンの硬化促進剤、その他の添加剤にしである
ため、適度な厚さの浸透部分（１５）を得ることができ
る。浸透部分（１５）の厚さはエナメル皮膜（１３）の
厚さの２０％以下にしであるため、エナメル皮膜（１３
）の性能を損なうことがない。As explained above, since the enamel film (13) and the permeable part (I5), and the permeable part (I5) and the resin (I4) are strongly bonded, they easily peel off in the vicinity of the superconducting wire (12). There is no. The material of the enamel film (13) is formal resin, and the ingredients of the resin (14) are a base resin of bisphenol type epoxy, a hardening agent of acid anhydride, a hardening accelerator of tertiary amine, and other additives. Therefore, it is possible to obtain a permeated portion (15) with an appropriate thickness. Since the thickness of the penetration part (15) is less than 20% of the thickness of the enamel film (13), the thickness of the enamel film (13)
) performance will not be impaired.
次に本発明による他の実施例について先に述べた第１図
を用いて説明する。絶縁導線（１１）は単線であるが、
複数の絶縁導線を撚り合わせたものにすることができる
。浸透部分（１５）の厚さは、エナメル皮膜（１３）の
材質や樹脂（１４）の成分の他に、樹脂（１４）の含浸
条件あるいは硬化条件によって調整することができる。Next, another embodiment according to the present invention will be described using FIG. 1 described above. The insulated conductor wire (11) is a single wire,
It can be made by twisting a plurality of insulated conductors. The thickness of the permeable portion (15) can be adjusted by the impregnation conditions or curing conditions of the resin (14), as well as the material of the enamel film (13) and the components of the resin (14).
［発明の効果］
本発明の超電導コイルは、エナメル皮膜の表面部分に樹
脂を浸透させることにより、エナメル皮膜と樹脂を強く
結合させたため、エナメル皮膜と樹脂の剥離による超電
導線のクエンチ及び冷却阻害を抑えることができる。ま
た、エナメル皮膜の材質をホルマール樹脂にすることに
より、エナメル皮膜の表面部分に樹脂を浸透させること
ができる。更に、樹脂の成分を選ぶことによって浸透部
分の厚さを薄く限定し、エナメル皮膜としての性能を十
分に残すことができる。[Effects of the Invention] The superconducting coil of the present invention strongly bonds the enamel film and the resin by infiltrating the surface of the enamel film, thereby preventing quenching and cooling inhibition of the superconducting wire due to peeling of the enamel film and the resin. It can be suppressed. Further, by using formal resin as the material of the enamel film, the resin can be infiltrated into the surface portion of the enamel film. Furthermore, by selecting the resin components, the thickness of the permeated portion can be limited to a small thickness, and the performance as an enamel film can be sufficiently maintained.
第１図は本発明の一実施例による超電導コイルの部分断
面図、第２図は従来例の超電導コイルの部分断面図を示
す。
（１） 、 （１１）・・・絶縁導線 （４） 、
（１４）・・・樹脂（２） 、 （１２）・・・超電導
線 （５）・・・浸透部分（３） 、 （１３）・・
・エナメル皮膜代理人 弁理士 則 近 憲 佑
第
図
第
図FIG. 1 is a partial sectional view of a superconducting coil according to an embodiment of the present invention, and FIG. 2 is a partial sectional view of a conventional superconducting coil. (1), (11)...Insulated conductor wire (4),
(14)...Resin (2), (12)...Superconducting wire (5)...Penetration part (3), (13)...
・Enamel Film Agent Patent Attorney Noriyuki Chika Diagram
Claims (1)
縁導線を多重に巻回し、隣接する絶縁導線間に樹脂を含
浸し硬化してなる超電導コイルにおいて、エナメル皮膜
の表面部分に前記樹脂を浸透させたことを特徴とする超
電導コイル。In a superconducting coil formed by covering a superconducting wire with an enamel film to make an insulated conductor, winding the insulated conductor in multiple layers, and impregnating and hardening a resin between adjacent insulated conductors, the resin is infiltrated into the surface portion of the enamel film. A superconducting coil characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2242497A JP2507693B2 (en) | 1990-09-14 | 1990-09-14 | Superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2242497A JP2507693B2 (en) | 1990-09-14 | 1990-09-14 | Superconducting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04123404A true JPH04123404A (en) | 1992-04-23 |
| JP2507693B2 JP2507693B2 (en) | 1996-06-12 |
Family
ID=17089971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2242497A Expired - Fee Related JP2507693B2 (en) | 1990-09-14 | 1990-09-14 | Superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507693B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5579642A (en) * | 1978-12-08 | 1980-06-16 | Shinko Electric Co Ltd | Insulating structure of motor for refrigerator |
| JPS63229703A (en) * | 1987-03-19 | 1988-09-26 | Toshiba Corp | Manufacture of superconducting coil |
-
1990
- 1990-09-14 JP JP2242497A patent/JP2507693B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5579642A (en) * | 1978-12-08 | 1980-06-16 | Shinko Electric Co Ltd | Insulating structure of motor for refrigerator |
| JPS63229703A (en) * | 1987-03-19 | 1988-09-26 | Toshiba Corp | Manufacture of superconducting coil |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2507693B2 (en) | 1996-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |