JPH08316023A - Superconducting coil and its manufacture - Google Patents
Superconducting coil and its manufactureInfo
- Publication number
- JPH08316023A JPH08316023A JP7119611A JP11961195A JPH08316023A JP H08316023 A JPH08316023 A JP H08316023A JP 7119611 A JP7119611 A JP 7119611A JP 11961195 A JP11961195 A JP 11961195A JP H08316023 A JPH08316023 A JP H08316023A
- Authority
- JP
- Japan
- Prior art keywords
- fusion
- superconducting
- superconducting wire
- superconducting coil
- adjacent
- 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.)
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- Insulating Of Coils (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、絶縁超電導線に融着材
を被覆して融着超電導線とし、この融着超電導線を巻枠
に複数列・複数層に巻回して構成される超電導コイルお
よびその製造方法に係り、特に隣接する融着超電導線の
相互間の接着力を向上させて、クラック、剥離、および
超電導線の動きの発生を低減し、クエンチの発生を確実
に抑制できるようにした超電導コイルおよびその製造方
法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting wire which is obtained by coating an insulating superconducting wire with a fusion material to form a fusion superconducting wire, and winding this fusion superconducting wire in a winding frame in a plurality of rows and a plurality of layers. The present invention relates to a coil and its manufacturing method, and particularly improves the adhesive force between adjacent fusion-bonded superconducting wires to reduce the occurrence of cracks, peeling, and movement of the superconducting wire, and to reliably suppress the occurrence of quenching. And a method for manufacturing the same.
【０００２】[0002]
【従来の技術】従来から、超電導コイルの一つとして、
例えば“東芝技術公開集ｖｏｌ．４−１５”で開示され
ているような融着型の超電導コイルがある。図７は、こ
の種の従来の融着型の超電導コイルにおける巻線部の一
部を示す縦断面図である。2. Description of the Related Art Conventionally, as one of superconducting coils,
For example, there is a fusion-type superconducting coil as disclosed in "Toshiba Technology Disclosure Vol. 4-15". FIG. 7 is a vertical cross-sectional view showing a part of a winding portion in a conventional fusion-type superconducting coil of this type.
【０００３】図７において、巻線部６は、融着超電導線
１を、これに一定の張力を加えながら複数列・複数層に
巻回した後、熱処理を加えることによって構成されてい
る。融着超電導線１は、絶縁超電導線２、およびこれに
被覆された融着材３から成っている。In FIG. 7, the winding portion 6 is formed by winding the fusion-bonded superconducting wire 1 into a plurality of rows and a plurality of layers while applying a constant tension to the fusion superconducting wire 1, and then applying a heat treatment. The fusion superconducting wire 1 is composed of an insulating superconducting wire 2 and a fusion material 3 coated on the insulation superconducting wire 2.
【０００４】また、隣接する融着超電導線１の相互間
は、融着材３によって接着されている。さらに、絶縁超
電導線２は、丸形の超電導線２ａ、およびそれに被覆さ
れた絶縁材２ｂによって構成されている。Adjacent fusion-bonded superconducting wires 1 are adhered to each other by a fusion-bonding material 3. Further, the insulated superconducting wire 2 is composed of a round superconducting wire 2a and an insulating material 2b covered with the superconducting wire 2a.
【０００５】そして、隣接する融着超電導線１の相互間
の隙間部４は、融着材３によってほぼ満たされている。
しかしながら、このような構成の超電導コイルでは、熱
処理時に溶融した融着材３の流出によって、融着超電導
線１の巻回時に作用している一定の張力が低下するとい
う傾向がある他に、隣接する融着超電導線１の相互間の
隙間部４が十分に融着材３で満たされない空洞８が生じ
るという傾向がある。The space 4 between the adjacent fusion superconducting wires 1 is almost filled with the fusion material 3.
However, in the superconducting coil having such a configuration, there is a tendency that a constant tension acting at the time of winding the fusion-bonded superconducting wire 1 is lowered due to the outflow of the fusion-bonding material 3 during the heat treatment. There is a tendency that cavities 8 in which the interstices 4 between the fused superconducting wires 1 are not sufficiently filled with the fusion material 3 are formed.
【０００６】また、融着材３量が、隣接する融着超電導
線１の相互間の隙間部４を十分に満たすに足りる場合で
も、融着超電導線１の巻回の際に、融着超電導線１が１
つの層から次の層へと移る部分は、隙間部が特に大きい
ため、融着材３が不十分となり易い傾向がある。Even when the amount of the fusion-bonding material 3 is sufficient to sufficiently fill the gap 4 between the adjacent fusion-bonding superconducting wires 1, the fusion-bonding superconducting wire 1 is wound when the fusion-bonding superconducting wire 1 is wound. Line 1 is 1
Since the gap is particularly large in the portion where one layer moves to the next layer, the fusing material 3 tends to become insufficient.
【０００７】これらのことは、隣接する融着超電導線１
の相互間の接着力の低下を招き、超電導コイル内部での
剥離や超電導線の動きが発生する原因になると共に、不
十分な融着材３によって生じた空洞８がクラックの起点
となり易い。These are the facts that the adjacent fused superconducting wire 1
The adhesive force between the two is reduced, which causes peeling inside the superconducting coil and movement of the superconducting wire, and the cavity 8 generated by the insufficient fusion material 3 easily becomes a starting point of cracks.
【０００８】また、融着超電導線１の表面、および隣接
する融着超電導線１の相互間の隙間部４に、電磁力や熱
応力によって剥離が生じ易い傾向がある他に、隣接する
融着超電導線１の相互間の隙間部４に満たされた融着材
３に、熱応力によるクラックが発生し易い。そして、こ
れらの剥離やクラック、超電導線の動きが発生した場合
には、発生部に伴う発熱によって超電導コイルのクエン
チを誘発することが懸念される。[0008] Further, in addition to the tendency of delamination due to electromagnetic force or thermal stress on the surface of the fusion-bonded superconducting wire 1 and the gap 4 between the adjacent fusion-bonded superconducting wires 1, adjacent fusion-bonded Cracks due to thermal stress easily occur in the fusion material 3 filled in the gaps 4 between the superconducting wires 1. When the peeling, cracking, or movement of the superconducting wire occurs, it is feared that the heat generated by the generation portion may induce quenching of the superconducting coil.
【０００９】[0009]
【発明が解決しようとする課題】以上のように、従来の
超電導コイルにおいては、隣接する融着超電導線の相互
間の接着力の低下によって、クラック、剥離、および超
電導線の動きが発生し、クエンチが発生するという問題
があった。As described above, in the conventional superconducting coil, cracks, peeling, and movement of the superconducting wire occur due to a decrease in the adhesive force between adjacent fusion-bonded superconducting wires, There was a problem that a quench occurred.
【００１０】本発明の目的は、隣接する融着超電導線の
相互間の接着力を向上させて、クラック、剥離、および
超電導線の動きの発生を低減し、クエンチの発生を確実
に抑制することが可能な信頼性の高い超電導コイルを提
供することにある。An object of the present invention is to improve the adhesive force between adjacent fused superconducting wires to reduce the occurrence of cracks, peeling, and movement of the superconducting wires, and to reliably suppress the occurrence of quench. To provide a highly reliable superconducting coil.
【００１１】また、本発明の目的は、隣接する融着超電
導線の相互間の接着力を向上させて、クラック、剥離、
および超電導線の動きの発生を低減し、クエンチの発生
を確実に抑制することが可能な信頼性の高い超電導コイ
ルを容易に製造することが可能な超電導コイルの製造方
法を提供することにある。Another object of the present invention is to improve the adhesive force between adjacent fused superconducting wires so that cracks, peeling,
Another object of the present invention is to provide a superconducting coil manufacturing method capable of easily manufacturing a highly reliable superconducting coil capable of reducing the occurrence of movement of the superconducting wire and reliably suppressing the occurrence of quench.
【００１２】[0012]
【課題を解決するための手段】上記の目的を達成するた
めに、まず、請求項１に対応する発明では、絶縁超電導
線に融着材を被覆して融着超電導線とし、当該融着超電
導線を巻枠に複数列・複数層に巻回し、融着材に熱処理
を加えて溶融した後、当該融着材を固めて隣接する融着
超電導線の相互間を接着して成る超電導コイルにおい
て、隣接する融着超電導線の相互間の隙間部に、融着材
と糸状の絶縁物とからなる融着絶縁物を配置する。In order to achieve the above object, first, in the invention corresponding to claim 1, an insulating superconducting wire is coated with a fusion material to obtain a fusion superconducting wire. In a superconducting coil formed by winding a wire in a plurality of rows and a plurality of layers on a winding frame, applying heat treatment to the fusion material to melt it, and then solidifying the fusion material to bond adjacent fusion superconducting wires to each other. A fusion-bonding insulator composed of a fusion-bonding material and a thread-shaped insulator is arranged in a gap between adjacent fusion-bonding superconducting wires.
【００１３】また、請求項２に対応する発明では、上記
請求項１に対応する発明の超電導コイルにおいて、融着
超電導線の巻回の際に融着超電導線が１つの層から次の
層へと移る部分に生じる隙間部のみに、融着絶縁物を配
置する。Further, in the invention according to claim 2, in the superconducting coil of the invention according to claim 1, when the fusion superconducting wire is wound, the fusion superconducting wire is changed from one layer to the next layer. The fusion insulating material is arranged only in the gap portion generated in the portion where
【００１４】さらに、請求項３に対応する発明では、上
記請求項１に対応する発明の超電導コイルにおいて、電
磁力による引き剥がし応力が高くなる中間層よりも内周
側に位置する層間に、融着絶縁物を配置する。Further, in the invention according to claim 3, in the superconducting coil of the invention according to claim 1, the fusion between the layers located on the inner peripheral side of the intermediate layer where the peeling stress due to the electromagnetic force is high. Place insulation.
【００１５】一方、請求項４に対応する発明では、上記
請求項１に対応する発明の超電導コイルを製造する方法
において、融着超電導線の巻回時に、融着絶縁物を当該
融着超電導線に沿わせて同時に巻回することにより、隣
接する融着超電導線の相互間の隙間部に融着絶縁物を配
置する。On the other hand, in the invention corresponding to claim 4, in the method for manufacturing the superconducting coil of the invention according to claim 1, the fusion insulator is provided with a fusion insulator when the fusion superconducting wire is wound. By simultaneously winding the fusion-bonded superconducting wires along the line, the fusion-bonded insulator is arranged in the gap between the adjacent fusion-bonded superconducting wires.
【００１６】また、請求項５に対応する発明では、上記
請求項１に対応する発明の超電導コイルを製造する方法
において、融着超電導線と融着絶縁物とを１層毎に交互
に巻回することにより、隣接する融着超電導線の相互間
の隙間部に融着絶縁物を配置する。Further, in the invention corresponding to claim 5, in the method for manufacturing the superconducting coil of the invention according to claim 1, the fusion-bonded superconducting wire and the fusion-bonded insulating material are alternately wound for each layer. By doing so, the fusion insulator is arranged in the gap between the adjacent fusion superconducting wires.
【００１７】[0017]
【作用】従って、まず、請求項１に対応する発明の超電
導コイルにおいては、隣接する融着超電導線の相互間の
隙間部に、融着材と糸状の絶縁物とからなる融着絶縁物
を配置することにより、隣接する融着超電導線の相互間
の隙間部を満たすために十分な融着材量が得られるた
め、隣接する融着超電導線の相互間の隙間部全体に接着
力が作用し、かつ密着性が高まるため、この部分におけ
る接着力が向上する。Therefore, first, in the superconducting coil of the invention according to claim 1, a fusion-bonding insulator comprising a fusion-bonding material and a thread-shaped insulator is provided in a gap between adjacent fusion-bonding superconducting wires. By arranging them, a sufficient amount of the fusion material can be obtained to fill the gap between the adjacent fusion superconducting wires, so that the adhesive force acts on the entire gap between the adjacent fusion superconducting wires. In addition, since the adhesion is improved, the adhesive force at this portion is improved.
【００１８】そして、この隣接する融着超電導線の相互
間の隙間部が融着材により満たされることによって、ク
ラックの起点となり得る空洞がなくなり、かつ巻回時の
張力の低下を抑制して超電導コイルの超電導線が強く固
定され、剥離や超電導線の動きを抑制することが可能と
なる。By filling the gap between the adjacent fusion-bonded superconducting wires with the fusion-bonding material, there are no cavities that can be the starting points for cracks, and the decrease in tension during winding is suppressed to prevent superconductivity. The superconducting wire of the coil is strongly fixed, and peeling and movement of the superconducting wire can be suppressed.
【００１９】さらに、隣接する融着超電導線の相互間の
隙間部を満たした融着材に、熱応力によるクラックが発
生した場合、糸状の絶縁物が介在することによって、ク
ラックの進展を抑制することが可能となる。Further, when cracks due to thermal stress occur in the fusing material that fills the gaps between the adjacent fusion superconducting wires, the progress of the cracks is suppressed by interposing a thread-like insulator. It becomes possible.
【００２０】これらにより、クエンチの発生を確実に抑
制することができる。また、請求項２に対応する発明の
超電導コイルにおいては、融着超電導線の巻回の際に融
着超電導線が１つの層から次の層へと移る部分に生じる
隙間部のみに、上記融着絶縁物を配置することにより、
融着超電導線の巻回の際に融着超電導線が１つの層から
次の層へと移る部分に生じる隙間部、すなわち隣接する
融着超電導線の相互間の隙間部を満たす量では融着材量
が不足となる部分について、上記請求項１に対応する発
明の超電導コイルの場合と同様の作用が得られ、この部
分におけるクエンチ発生を確実に抑制することができ
る。With these, the occurrence of quench can be surely suppressed. Further, in the superconducting coil of the invention corresponding to claim 2, when the fusion-bonding superconducting wire is wound, the fusion-bonding superconducting wire is formed only in a gap portion formed in a portion where the fusion-bonding superconducting wire moves from one layer to the next layer. By arranging the insulating material,
When the fusion-bonded superconducting wire is wound, the gap formed at the portion where the fusion-bonded superconducting wire moves from one layer to the next layer, that is, the amount of filling the gap between adjacent fusion-bonded superconducting wires With respect to the portion where the amount of material is insufficient, the same action as in the case of the superconducting coil of the invention according to claim 1 can be obtained, and the occurrence of quench in this portion can be reliably suppressed.
【００２１】さらに、請求項３に対応する発明の超電導
コイルにおいては、電磁力による引き剥がし応力が高く
なる中間層よりも内周側に位置する層間に、融着絶縁物
を配置することにより、巻線部層間の剥離し易い部分の
接着力を強化して、剥離に伴なうクエンチの発生を確実
に抑制することができる。Further, in the superconducting coil of the invention according to claim 3, by arranging the fusion insulating material between the layers located on the inner peripheral side of the intermediate layer where the peeling stress due to the electromagnetic force becomes high, It is possible to strengthen the adhesive force of the part that easily separates between the winding part layers and reliably suppress the occurrence of quenching accompanying the separation.
【００２２】一方、請求項４に対応する発明の超電導コ
イルの製造方法においては、融着超電導線の巻回時に、
融着絶縁物を当該融着超電導線に沿わせて同時に巻回す
ることにより、上記超電導コイルを容易に製造すること
ができる。On the other hand, in the method of manufacturing a superconducting coil of the invention according to claim 4, when the fusion-bonded superconducting wire is wound,
The superconducting coil can be easily manufactured by winding the fusion insulating material along the fusion superconducting wire at the same time.
【００２３】また、請求項５に対応する発明の超電導コ
イルの製造方法においては、融着超電導線と融着絶縁物
とを１層毎に交互に巻回することにより、上記超電導コ
イルを容易に製造することができる。In the method for manufacturing a superconducting coil according to the fifth aspect of the present invention, the superconducting coil can be easily manufactured by alternately winding the fusion-bonding superconducting wire and the fusion-bonding insulator for each layer. It can be manufactured.
【００２４】[0024]
【実施例】以下、本発明の実施例について図面を参照し
て詳細に説明する。 （第１の実施例）図１は、本実施例による超電導コイル
における巻線部の構成例を示す部分断面図であり、図７
と同一要素には同一符号を付して示している。Embodiments of the present invention will now be described in detail with reference to the drawings. (First Embodiment) FIG. 1 is a partial cross-sectional view showing a structural example of a winding portion in a superconducting coil according to this embodiment.
The same elements as those in are denoted by the same reference numerals.
【００２５】図１において、超電導コイルは、融着超電
導線１を多重に巻回して構成している。この融着超電導
線１は、絶縁超電導線２、および融着材３から成ってい
る。また、隣接する融着超電導線１の相互間は、融着材
３によって接着している。In FIG. 1, the superconducting coil is formed by winding the fused superconducting wire 1 in multiple layers. The fusion superconducting wire 1 is composed of an insulating superconducting wire 2 and a fusion material 3. Further, the adjacent fusion-bonded superconducting wires 1 are bonded to each other by the fusion material 3.
【００２６】さらに、隣接する融着超電導線１の相互間
の隙間部４には、糸状絶縁物５を配置しており、流れ込
んだ融着材３と一体化して融着絶縁物を成し、隙間部４
を満たしている。Furthermore, a thread-shaped insulator 5 is arranged in the gap 4 between the adjacent fusion-bonded superconducting wires 1 and is integrated with the melted fusion material 3 to form a fusion-bonded insulator. Gap 4
Meets
【００２７】ここで、融着材３は、融着超電導線１、お
よび融着絶縁物を、コイル巻回後熱処理による溶融の後
に室温に戻すことによって、または熱処理時の硬化作用
によって固まった状態になっている。従って、隣接する
融着超電導線１相互間は融着材３で接着されている。Here, the fusion material 3 is in a state of being solidified by returning the fusion superconducting wire 1 and the fusion insulation to room temperature after melting by heat treatment after coil winding, or by a hardening action during heat treatment. It has become. Therefore, the adjacent fusion-bonded superconducting wires 1 are bonded together by the fusion material 3.
【００２８】図２は、本実施例の超電導コイルにおける
熱処理を加える前（成形前）の融着超電導線１の状態を
示す断面図である。図２において、融着超電導線１は、
絶縁超電導線２、およびそれに被覆された融着材３ａか
らなっている。この融着材３ａは、図示のように、絶縁
超電導線２の全面に被覆されている。FIG. 2 is a sectional view showing a state of the fusion-bonded superconducting wire 1 before heat treatment (before forming) in the superconducting coil of this embodiment. In FIG. 2, the fused superconducting wire 1 is
It is composed of an insulating superconducting wire 2 and a fusion material 3a coated on it. As shown in the figure, the fusion material 3a covers the entire surface of the insulated superconducting wire 2.
【００２９】また、絶縁超電導線２は、丸形の超電導線
２ａ、およびそれに被覆された絶縁材２ｂにより構成さ
れている。ここで、絶縁材２ｂとしては、例えばホルマ
ール樹脂、またはポリイミド樹脂等からなっている。The insulated superconducting wire 2 is composed of a round superconducting wire 2a and an insulating material 2b coated on the superconducting wire 2a. Here, the insulating material 2b is made of, for example, formal resin or polyimide resin.
【００３０】また、融着材３ａとしては、例えばフェノ
キシ樹脂や半硬化状態のエポキシ樹脂、あるいは熱可塑
性の高分子から構成される。図３は、本実施例の超電導
コイルにおける熱処理を加える前（成形前）の融着絶縁
物７の状態を示す断面図である。The fusing material 3a is made of, for example, a phenoxy resin, a semi-cured epoxy resin, or a thermoplastic polymer. FIG. 3 is a cross-sectional view showing a state of the fusion insulator 7 before heat treatment (before molding) in the superconducting coil of this example.
【００３１】図３において、融着絶縁物７は、糸状絶縁
物５と融着材３ｂとから成っている。ここで、糸状絶縁
物５としては、例えば１本、あるいは複数のガラスヤー
ン、ガラスロービング、あるいはガラス短繊維（ミルド
ファイバー）等からなっている。In FIG. 3, the fusion insulating material 7 is composed of the thread-shaped insulation material 5 and the fusion material 3b. Here, the thread-shaped insulator 5 is made of, for example, one or a plurality of glass yarns, glass rovings, glass short fibers (milled fibers), or the like.
【００３２】また、融着材３ｂは、糸状絶縁物５にあら
かじめ含浸、あるいは全面に被覆され、構成は融着材３
ａと同じものとするのが好ましい。そして、これらの融
着材３ａおよび融着材３ｂは、熱処理後に互いに一体と
なって融着材３を構成する。Further, the fusing material 3b is impregnated in advance with the filamentous insulating material 5 or is coated on the entire surface, and the construction is the fusing material 3b.
It is preferably the same as a. Then, the fusion material 3a and the fusion material 3b are integrated with each other after the heat treatment to form the fusion material 3.
【００３３】一方、本実施例の超電導コイルとしては、
例えは以下のような方法により製造することができる。 （ａ）融着超電導線１の巻回時に、融着絶縁物７を融着
超電導線１に沿わせて同時に巻回することにより、隣接
する融着超電導線１の相互間の隙間部４に融着絶縁物７
を配置する方法。On the other hand, as the superconducting coil of this embodiment,
For example, it can be manufactured by the following method. (A) At the time of winding the fusion-bonded superconducting wire 1, the fusion-insulating material 7 is wound along the fusion-bonded superconducting wire 1 at the same time to form a gap 4 between adjacent fusion-bonded superconducting wires 1. Fusing insulation 7
How to place.
【００３４】（ｂ）融着超電導線１と融着絶縁物７とを
１層毎に交互に巻回することにより、隣接する融着超電
導線１の相互間の隙間部４に融着絶縁物７を配置する方
法。次に、以上のように構成した本実施例の超電導コイ
ルにおいては、隣接する融着超電導線１の相互間の隙間
部４に、融着材３ｂと糸状絶縁物５とからなる融着絶縁
物７を配置しているので、隣接する融着超電導線１の相
互間の隙間部４を満たすために十分な融着材量が得ら
れ、かつ隣接した融着超電導線１相互間の隙間部４全体
に接着力が働き、密着性が高まるため、この部分におけ
る接着力が向上する。(B) By alternately winding the fusion-bonded superconducting wire 1 and the fusion-bonded insulating material 7 layer by layer, the fusion-bonded insulating material is provided in the gap 4 between the adjacent fusion-bonded superconducting wires 1. How to place 7. Next, in the superconducting coil of the present embodiment configured as described above, in the gap portion 4 between the adjacent fusion superconducting wires 1, the fusion insulating material including the fusion material 3b and the thread-like insulating material 5 is formed. 7 are arranged, a sufficient amount of the fusion material can be obtained to fill the gap 4 between the adjacent fusion superconducting wires 1 and the gap 4 between the adjacent fusion superconducting wires 1 can be obtained. Since the adhesive force acts on the whole and the adhesion is enhanced, the adhesive force in this portion is improved.
【００３５】そして、この隣接する融着超電導線１の相
互間の隙間部４が、融着材３により満たされていること
によって、クラックの起点となり得る前記空洞８の発生
がなくなり、かつ巻回時の張力の低下を抑制して超電導
コイルの超電導線が強く固定され、剥離や超電導線の動
きを抑制することができる。Since the space 4 between the adjacent fusion-bonded superconducting wires 1 is filled with the fusion-bonding material 3, the cavity 8 which may be the starting point of the crack is eliminated, and the winding is prevented. It is possible to suppress the decrease in tension at the time and strongly fix the superconducting wire of the superconducting coil, and to prevent peeling and movement of the superconducting wire.
【００３６】さらに、隣接する融着超電導線１の相互間
の隙間部４を満たした融着材３に、熱応力によるクラッ
クが発生した場合、糸状絶縁物５が介在することによっ
て、クラックの進展を抑制することができる。Furthermore, when cracks due to thermal stress occur in the fusing material 3 that fills the gaps 4 between adjacent fusing superconducting wires 1, the progress of the cracks due to the interposition of the thread-shaped insulator 5. Can be suppressed.
【００３７】さらにまた、糸状絶縁物５が配置されてい
ることによって、巻線部６の機械的強度が向上すると共
に、コイル冷却時の融着材３部分における熱収縮量が低
減する。Furthermore, the provision of the thread-like insulator 5 improves the mechanical strength of the winding portion 6 and reduces the amount of heat shrinkage in the fusion material 3 portion during coil cooling.
【００３８】これらにより、クエンチの発生を確実に抑
制することができる。図６は、本実施例の超電導コイ
ル、および図７に示した従来の超電導コイルにおけるク
エンチ電流Ｉｑの測定結果の一例を示す特性図である。With these, the occurrence of quench can be surely suppressed. FIG. 6 is a characteristic diagram showing an example of measurement results of the quench current Iq in the superconducting coil of the present example and the conventional superconducting coil shown in FIG. 7.
【００３９】図６から、本実施例の超電導コイルは、従
来の超電導コイルに比べて、クエンチ電流Ｉｑの値が大
きくなっているのを認めることができる。上述したよう
に、本実施例の超電導コイルは、隣接する融着超電導線
１の相互間の隙間部４に、融着材３ｂと糸状絶縁物５と
からなる融着絶縁物７を配置するようにしたものであ
る。It can be seen from FIG. 6 that the superconducting coil of this embodiment has a larger quench current Iq than the conventional superconducting coil. As described above, in the superconducting coil of this embodiment, the fusion insulator 7 including the fusion material 3b and the thread-like insulator 5 is arranged in the gap 4 between the adjacent fusion superconducting wires 1. It is the one.
【００４０】従って、隣接する融着超電導線１の相互間
の接着力を向上させて、クラック、剥離、および超電導
線の動きの発生を低減することができ、もってクエンチ
の発生を確実に抑制することが可能となる。Therefore, it is possible to improve the adhesive force between the adjacent fusion-bonded superconducting wires 1 and reduce the occurrence of cracks, peeling, and movement of the superconducting wires, and thus to reliably suppress the occurrence of quench. It becomes possible.
【００４１】また、融着超電導線１の巻回時に、融着絶
縁物７を融着超電導線１に沿わせて同時に巻回するか、
もしくは融着超電導線１と融着絶縁物７とを１層毎に交
互に巻回することにより、隣接する融着超電導線１の相
互間の隙間部４に融着絶縁物７を配置しているため、信
頼性の高い超電導コイルを極めて容易に製造することが
可能となる。When the fusion-bonded superconducting wire 1 is wound, the fusion-bonding insulator 7 is wound along the fusion-bonded superconducting wire 1 at the same time, or
Alternatively, the fusible superconducting wire 1 and the fusible insulating material 7 are alternately wound layer by layer so that the fusible insulating material 7 is disposed in the gap 4 between the adjacent fusible superconducting wires 1. Therefore, a highly reliable superconducting coil can be manufactured extremely easily.
【００４２】（第２の実施例）図４は、本実施例による
超電導コイルにおける巻枠と接する巻線部の構成例を示
す部分断面図であり、図１ないし図３と同一要素には同
一符号を付して示している。(Second Embodiment) FIG. 4 is a partial cross-sectional view showing a structural example of a winding portion in contact with a winding frame in a superconducting coil according to this embodiment, and the same elements as those in FIGS. 1 to 3 are the same. It is shown with reference numerals.
【００４３】図４において、超電導コイルは、融着超電
導線１を多重に巻回して構成している。この融着超電導
線１は、絶縁超電導線２、および融着材３から成ってい
る。また、対地絶縁部１０と隣接する部分、すなわち融
着超電導線が１つの層から次の層へと移る部分に生じる
隙間部４には、熱処理した結果溶融して融着超電導線１
と一体化した融着絶縁物７の構造物である、融着材３と
糸状絶縁物５とを配置している。In FIG. 4, the superconducting coil is formed by winding the fused superconducting wire 1 in multiple layers. The fusion superconducting wire 1 is composed of an insulating superconducting wire 2 and a fusion material 3. In addition, in the gap portion 4 formed in a portion adjacent to the ground insulating portion 10, that is, in a portion where the fused superconducting wire moves from one layer to the next layer, the fused superconducting wire 1 is melted as a result of heat treatment.
The fusing material 3 and the thread-shaped insulating material 5, which are the structures of the fused insulating material 7 integrated with the above, are arranged.
【００４４】次に、以上のように構成した本実施例の超
電導コイルにおいては、融着超電導線１の巻回の際に融
着超電導線１が１つの層から次の層へと移る部分に生じ
る隙間部４のみに、融着材３と糸状絶縁物５とからなる
融着絶縁物７を配置しているので、融着超電導線１が１
つの層から次の層へと移る部分に生じる隙間部４を満た
すために十分な融着材量が得られ、この部分における接
着力を強化して、クラック、剥離、および超電導線の動
きを抑制でき、もってクエンチ発生を確実に抑制するこ
とができる。Next, in the superconducting coil of the present embodiment configured as described above, when the fusion superconducting wire 1 is wound, the fusion superconducting wire 1 is transferred from one layer to the next layer. Since the fusion-bonding insulator 7 made up of the fusion-bonding material 3 and the thread-like insulator 5 is arranged only in the gap 4 that is formed, the fusion-bonding superconducting wire 1 is
A sufficient amount of fusing material can be obtained to fill the gap 4 generated in the part that moves from one layer to the next layer, strengthening the adhesive force in this part and suppressing cracks, peeling, and movement of the superconducting wire. Therefore, quenching can be surely suppressed.
【００４５】上述したように、本実施例の超電導コイル
は、融着超電導線１の巻回の際に融着超電導線１が１つ
の層から次の層へと移る部分に生じる隙間部４のみに、
融着材３と糸状絶縁物５とからなる融着絶縁物を配置す
るようにしたものである。As described above, in the superconducting coil of the present embodiment, only the gap portion 4 formed at the portion where the fusion superconducting wire 1 moves from one layer to the next layer when the fusion superconducting wire 1 is wound. To
A fusion insulating material composed of the fusion material 3 and the thread-shaped insulating material 5 is arranged.
【００４６】従って、隣接する融着超電導線１の相互間
の接着力、特に融着超電導線１が１つの層から次の層へ
と移る部分に生じる隙間部４における接着力を向上させ
て、クラック、剥離、および超電導線の動きの発生を低
減することができ、もってクエンチの発生を確実に抑制
することが可能となる。Therefore, the adhesive force between the adjacent fusion-bonded superconducting wires 1 is improved, especially the adhesive force in the gap 4 formed at the portion where the fusion-bonded superconducting wire 1 is transferred from one layer to the next, It is possible to reduce the occurrence of cracks, peeling, and movement of the superconducting wire, and thus it is possible to reliably suppress the occurrence of quench.
【００４７】（第３の実施例）図５は、本実施例による
超電導コイルにおける巻線部の構成例を拡大して示す部
分断面図であり、図１乃至図４と同一要素には同一符号
を付して示している。(Third Embodiment) FIG. 5 is an enlarged partial sectional view showing a structural example of a winding portion in a superconducting coil according to this embodiment. The same elements as those in FIGS. Is attached.
【００４８】図５において、超電導コイルは、融着超電
導線１を多重に巻回して構成している。この融着超電導
線１は、絶縁超電導線２、および融着材３から成ってい
る。また、例えばコイル中間層よりも内周側に位置する
融着超電導線１の相互間の隙間部４には、熱処理した結
果溶融して融着超電導線１と一体化した融着絶縁物７の
構成物である、融着材３と糸状絶縁物５とを配置してい
る。In FIG. 5, the superconducting coil is constructed by winding the fused superconducting wire 1 in multiple layers. The fusion superconducting wire 1 is composed of an insulating superconducting wire 2 and a fusion material 3. Further, for example, in the gap portion 4 between the fusion-bonded superconducting wires 1 located on the inner peripheral side of the coil intermediate layer, there is formed a fusion-bonding insulator 7 which is fused as a result of heat treatment and is integrated with the fusion-bonding superconducting wire 1. The fusing material 3 and the thread-like insulating material 5, which are the constituents, are arranged.
【００４９】次に、以上のように構成した本実施例の超
電導コイルにおいては、電磁力による引き剥がし応力が
高くなる中間層よりも内周側に位置する層間に、融着材
３と糸状絶縁物５とからなる融着絶縁物７を配置してい
るので、電磁力による引き剥がし応力が高いと考えられ
る巻線部６の内周側において、隣接する融着超電導線１
の相互間の隙間部４を満たすために十分な融着材量が得
られ、かつ隣接した融着超電導線１の相互間の隙間部４
全体に接着力が働く。Next, in the superconducting coil of this embodiment configured as described above, the fusing material 3 and the filament insulation are provided between the layers located on the inner peripheral side of the intermediate layer where the peeling stress due to the electromagnetic force becomes high. Since the fusion-bonding insulator 7 composed of the material 5 is arranged, the fusion-bonding superconducting wire 1 which is adjacent to the fusion-bonding superconducting wire 1 on the inner peripheral side of the winding portion 6 which is considered to have high peeling stress due to electromagnetic force.
A sufficient amount of the fusing material to fill the gaps 4 between the adjacent superconducting wires 1 and the gaps 4 between the adjacent fusion superconducting wires 1.
Adhesive force works on the whole.
【００５０】そして、この隣接する融着超電導線１の相
互間の隙間部４が、融着材３により満たされることによ
って、クラックの起点となり得る空洞８の発生がなくな
り、かつ巻回時の張力の低下を抑制して超電導コイルの
超電導線が強く固定され、剥離や超電導線の動きを抑制
することができる。By filling the gap 4 between the adjacent fusion-bonded superconducting wires 1 with the fusion-bonding material 3, there is no generation of the cavity 8 which may be the starting point of the crack, and the tension during winding is eliminated. Is suppressed, the superconducting wire of the superconducting coil is strongly fixed, and peeling and movement of the superconducting wire can be suppressed.
【００５１】さらに、隣接する融着超電導線１の相互間
の隙間部４を満たした融着材３に、熱応力によるクラッ
クが発生した場合、糸状絶縁物５が介在することによっ
て、クラックの進展を抑制することができる。Further, when cracks due to thermal stress occur in the fusing material 3 that fills the gaps 4 between the adjacent fusion superconducting wires 1, the progress of the cracks is caused by the interposition of the thread-shaped insulator 5. Can be suppressed.
【００５２】上述したように、本実施例の超電導コイル
は、電磁力による引き剥がし応力が高くなる中間層より
も内周側に位置する層間に、融着材３と糸状絶縁物５と
からなる融着絶縁物７を配置するようにしたものであ
る。As described above, the superconducting coil of this embodiment is composed of the fusing material 3 and the thread-shaped insulator 5 between the layers located on the inner peripheral side of the intermediate layer where the peeling stress due to the electromagnetic force becomes high. The fusion insulator 7 is arranged.
【００５３】従って、隣接する融着超電導線１の相互間
の接着力を向上させて、クラック、剥離、および超電導
線の動きの発生を低減することができ、もってクエンチ
の発生を確実に抑制することが可能となる。Therefore, it is possible to improve the adhesive force between the adjacent fusion-bonded superconducting wires 1 to reduce the occurrence of cracks, peeling, and movement of the superconducting wires, and thus to surely suppress the occurrence of quench. It becomes possible.
【００５４】また、融着超電導線１の巻回時に、融着絶
縁物７を融着超電導線１に沿わせて同時に巻回するか、
もしくは融着超電導線１と融着絶縁物７とを１層毎に交
互に巻回することにより、隣接する融着超電導線１の相
互間の隙間部４に融着絶縁物７を配置しているため、信
頼性の高い超電導コイルを極めて容易に製造することが
可能となる。When the fusion-bonding superconducting wire 1 is wound, the fusion-insulating material 7 is wound along the fusion-bonding superconducting wire 1 at the same time, or
Alternatively, the fusible superconducting wire 1 and the fusible insulating material 7 are alternately wound layer by layer so that the fusible insulating material 7 is disposed in the gap 4 between the adjacent fusible superconducting wires 1. Therefore, a highly reliable superconducting coil can be manufactured extremely easily.
【００５５】[0055]
【発明の効果】以上説明したように、まず、請求項１に
対応する発明によれば、絶縁超電導線に融着材を被覆し
て融着超電導線とし、当該融着超電導線を巻枠に複数列
・複数層に巻回し、融着材に熱処理を加えて溶融した
後、当該融着材を固めて隣接する融着超電導線の相互間
を接着して成る超電導コイルにおいて、隣接する融着超
電導線の相互間の隙間部に、融着材と糸状の絶縁物とか
らなる融着絶縁物を配置するようにしたので、隣接する
融着超電導線の相互間の接着力を向上させて、クラッ
ク、剥離、および超電導線の動きの発生を低減し、クエ
ンチの発生を確実に抑制することが可能な信頼性の高い
超電導コイルが提供できる。As described above, according to the invention corresponding to claim 1, first, an insulating superconducting wire is coated with a fusion material to obtain a fusion superconducting wire, and the fusion superconducting wire is used as a winding frame. In a superconducting coil that is formed by winding in multiple rows and multiple layers, applying heat treatment to the fusion material to melt it, and then solidifying the fusion material and adhering adjacent fusion superconducting wires to each other. In the gap between the superconducting wires, a fusion insulating material composed of a fusion material and a thread-shaped insulating material is arranged, so that the adhesive force between adjacent fusion superconducting wires is improved, A highly reliable superconducting coil capable of reducing the occurrence of cracks, peeling, and movement of the superconducting wire and reliably suppressing the occurrence of quenching can be provided.
【００５６】また、請求項２に対応する発明によれば、
上記請求項１に対応する発明の超電導コイルにおいて、
融着超電導線の巻回の際に融着超電導線が１つの層から
次の層へと移る部分に生じる隙間部のみに、融着絶縁物
を配置するようにしたので、隣接する融着超電導線の相
互間の接着力を向上させて、クラック、剥離、および超
電導線の動きの発生を低減し、クエンチの発生を確実に
抑制することが可能な信頼性の高い超電導コイルが提供
できる。According to the invention corresponding to claim 2,
In the superconducting coil of the invention according to claim 1,
When the fusible superconducting wire is wound, the fusible superconducting wire is arranged only in the gap formed in the portion where the fusible superconducting wire moves from one layer to the next layer. It is possible to provide a highly reliable superconducting coil capable of improving the adhesive force between wires to reduce the occurrence of cracks, peeling, and movement of superconducting wires and reliably suppressing the occurrence of quenching.
【００５７】さらに、請求項３に対応する発明によれ
ば、上記請求項１に対応する発明の超電導コイルにおい
て、電磁力による引き剥がし応力が高くなる中間層より
も内周側に位置する層間に、融着絶縁物を配置するよう
にしたので、隣接する融着超電導線の相互間の接着力を
向上させて、クラック、剥離、および超電導線の動きの
発生を低減し、クエンチの発生を確実に抑制することが
可能な信頼性の高い超電導コイルが提供できる。Further, according to the invention corresponding to claim 3, in the superconducting coil of the invention according to claim 1, between the layers located on the inner peripheral side of the intermediate layer where the peeling stress due to the electromagnetic force is high. Since the fusion insulating material is arranged, the adhesion between adjacent fusion superconducting wires is improved to reduce the occurrence of cracks, peeling, and movement of the superconducting wires, and ensure the occurrence of quench. It is possible to provide a highly reliable superconducting coil that can be suppressed.
【００５８】一方、請求項４に対応する発明によれば、
上記請求項１に対応する発明の超電導コイルを製造する
際に、融着超電導線の巻回時に、融着絶縁物を当該融着
超電導線に沿わせて同時に巻回することにより、隣接す
る融着超電導線の相互間の隙間部に融着絶縁物を配置す
るようにしたので、隣接する融着超電導線の相互間の接
着力を向上させて、クラック、剥離、および超電導線の
動きの発生を低減し、クエンチの発生を確実に抑制する
ことが可能な信頼性の高い超電導コイルを容易に製造す
ることが可能な超電導コイルの製造方法が提供できる。On the other hand, according to the invention of claim 4,
In manufacturing the superconducting coil of the invention corresponding to the above-mentioned claim 1, at the time of winding of the fusion superconducting wire, the fusion insulator is wound along the fusion superconducting wire at the same time so that the adjacent fusion wires Since the fusion insulating material is arranged in the gap between the superconducting superposed wires, the adhesion between the adjacent superconducting superconducting wires is improved, and cracks, peeling, and movement of the superconducting wires occur. It is possible to provide a superconducting coil manufacturing method capable of easily manufacturing a highly reliable superconducting coil capable of reliably suppressing quenching from occurring.
【００５９】また、請求項５に対応する発明によれば、
上記請求項１に対応する発明の超電導コイルを製造する
際に、融着超電導線と融着絶縁物とを１層毎に交互に巻
回することにより、隣接する融着超電導線の相互間の隙
間部に融着絶縁物を配置するようにしたので、隣接する
融着超電導線の相互間の接着力を向上させて、クラッ
ク、剥離、および超電導線の動きの発生を低減し、クエ
ンチの発生を確実に抑制することが可能な信頼性の高い
超電導コイルを容易に製造することが可能な超電導コイ
ルの製造方法が提供できる。According to the invention corresponding to claim 5,
When manufacturing the superconducting coil of the invention corresponding to claim 1, the fusion-bonding superconducting wire and the fusion-insulating material are alternately wound layer by layer so that the fusion-bonding superconducting wires adjacent to each other are wound. Since the fusion insulator is placed in the gap, it improves the adhesive force between adjacent fusion superconducting wires and reduces the occurrence of cracks, peeling and movement of the superconducting wires, and the occurrence of quench. A superconducting coil manufacturing method capable of easily manufacturing a highly reliable superconducting coil capable of reliably suppressing
【図１】本発明による超電導コイルの第１の実施例を示
す部分断面図。FIG. 1 is a partial cross-sectional view showing a first embodiment of a superconducting coil according to the present invention.
【図２】同第１の実施例の超電導コイルにおける融着超
電導線の成形前の状態を示す断面図。FIG. 2 is a cross-sectional view showing a state before forming a fusion-bonded superconducting wire in the superconducting coil of the first embodiment.
【図３】同第１の実施例の超電導コイルにおける融着絶
縁物の成形前の状態を示す断面図。FIG. 3 is a cross-sectional view showing a state before forming a fusion insulating material in the superconducting coil of the first embodiment.
【図４】本発明による超電導コイルの第２の実施例を示
す部分断面図。FIG. 4 is a partial cross-sectional view showing a second embodiment of the superconducting coil according to the present invention.
【図５】本発明による超電導コイルの第３の実施例を示
す部分断面図。FIG. 5 is a partial sectional view showing a third embodiment of the superconducting coil according to the present invention.
【図６】同第１の実施例による超電導コイルおよび従来
による超電導コイルにおけるクエンチ電流の測定結果の
一例を示す特性図。FIG. 6 is a characteristic diagram showing an example of measurement results of quench current in the superconducting coil according to the first embodiment and the conventional superconducting coil.
【図７】従来の超電導コイルの一例を示す部分断面図。FIG. 7 is a partial sectional view showing an example of a conventional superconducting coil.
１…融着超電導線、 ２…絶縁超電導線、 ２ａ…超電導線、 ２ｂ…絶縁材、 ３…融着材、 ３ａ…融着材、 ３ｂ…融着材、 ４…隙間部、 ５…糸状絶縁物、 ６…巻線部、 ７…融着絶縁物、 ８…空洞、 ９…巻枠、 １０…対地絶縁。 DESCRIPTION OF SYMBOLS 1 ... Fused superconducting wire, 2 ... Insulating superconducting wire, 2a ... Superconducting wire, 2b ... Insulating material, 3 ... Fusing material, 3a ... Fusing material, 3b ... Fusing material, 4 ... Gap part, 5 ... Filiform insulation Item, 6 ... Winding part, 7 ... Fusing insulation, 8 ... Cavity, 9 ... Reel, 10 ... Ground insulation.
Claims (5)
電導線とし、当該融着超電導線を巻枠に複数列・複数層
に巻回し、融着材に熱処理を加えて溶融した後、当該融
着材を固めて隣接する融着超電導線の相互間を接着して
成る超電導コイルにおいて、 前記隣接する融着超電導線の相互間の隙間部に、融着材
と糸状の絶縁物とからなる融着絶縁物を配置したことを
特徴とする超電導コイル。1. An insulating superconducting wire is coated with a fusing material to form a fusing superconducting wire, the fusing superconducting wire is wound in a plurality of rows and a plurality of layers on a winding frame, and the fusing material is melted by heat treatment. After that, in a superconducting coil formed by fixing the fusion material and adhering the adjacent fusion superconducting wires to each other, in the gap between the adjacent fusion superconducting wires, the fusion material and the thread-like insulator A superconducting coil, in which a fusion insulating material consisting of
いて、 融着超電導線の巻回の際に融着超電導線が１つの層から
次の層へと移る部分に生じる隙間部のみに、前記融着絶
縁物を配置するようにしたことを特徴とする超電導コイ
ル。2. The superconducting coil according to claim 1, wherein when the fusion-bonded superconducting wire is wound, the fusion-bonded superconducting wire is formed only in a gap formed in a portion where the fusion-bonded superconducting wire moves from one layer to the next layer. A superconducting coil characterized in that a fusion insulator is arranged.
いて、 電磁力による引き剥がし応力が高くなる中間層よりも内
周側に位置する層間に、前記融着絶縁物を配置するよう
にしたことを特徴とする超電導コイル。3. The superconducting coil according to claim 1, wherein the fusion insulating material is arranged between layers located on an inner peripheral side of an intermediate layer where peeling stress due to electromagnetic force is high. Is a superconducting coil.
造する方法において、 前記融着超電導線の巻回時に、融着絶縁物を当該融着超
電導線に沿わせて同時に巻回することにより、隣接する
融着超電導線の相互間の隙間部に融着絶縁物を配置する
ようにしたことを特徴とする超電導コイルの製造方法。4. The method for manufacturing a superconducting coil according to claim 1, wherein the fusion insulating material is wound along the fusion superconducting wire at the time of winding the fusion superconducting wire. A method for manufacturing a superconducting coil, wherein a fusion insulator is arranged in a gap between adjacent fusion superconducting wires.
造する方法において、 前記融着超電導線と融着絶縁物とを１層毎に交互に巻回
することにより、隣接する融着超電導線の相互間の隙間
部に融着絶縁物を配置するようにしたことを特徴とする
超電導コイルの製造方法。5. The method for manufacturing a superconducting coil according to claim 1, wherein the fusion superconducting wire and the fusion insulating material are alternately wound for each layer so that adjacent fusion welding superconducting wires are provided. A method for manufacturing a superconducting coil, characterized in that a fusion insulating material is arranged in a gap between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7119611A JPH08316023A (en) | 1995-05-18 | 1995-05-18 | Superconducting coil and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7119611A JPH08316023A (en) | 1995-05-18 | 1995-05-18 | Superconducting coil and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08316023A true JPH08316023A (en) | 1996-11-29 |
Family
ID=14765710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7119611A Pending JPH08316023A (en) | 1995-05-18 | 1995-05-18 | Superconducting coil and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08316023A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006319189A (en) * | 2005-05-13 | 2006-11-24 | Toshiba Corp | Superconducting magnet and its production method |
| JP2008085375A (en) * | 2007-12-20 | 2008-04-10 | Mitsubishi Electric Corp | Method of manufacturing superconducting magnet device |
| JP2008251801A (en) * | 2007-03-30 | 2008-10-16 | Mitsubishi Electric Corp | Coil and manufacturing method therefor |
| JPWO2017018144A1 (en) * | 2015-07-30 | 2018-03-01 | 株式会社日立製作所 | Superconducting coil and manufacturing method thereof |
| WO2021100789A1 (en) * | 2019-11-18 | 2021-05-27 | 古河電気工業株式会社 | Superconducting coil, method for producing same, and rectangular superconducting wire material for superconducting coil |
| US20210296034A1 (en) * | 2020-03-17 | 2021-09-23 | Kabushiki Kaisha Toshiba | Superconducting coil, superconducting device, and superconducting wire rod for superconducting coil |
-
1995
- 1995-05-18 JP JP7119611A patent/JPH08316023A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006319189A (en) * | 2005-05-13 | 2006-11-24 | Toshiba Corp | Superconducting magnet and its production method |
| JP4594794B2 (en) * | 2005-05-13 | 2010-12-08 | 株式会社東芝 | Manufacturing method of superconducting magnet |
| JP2008251801A (en) * | 2007-03-30 | 2008-10-16 | Mitsubishi Electric Corp | Coil and manufacturing method therefor |
| JP2008085375A (en) * | 2007-12-20 | 2008-04-10 | Mitsubishi Electric Corp | Method of manufacturing superconducting magnet device |
| JPWO2017018144A1 (en) * | 2015-07-30 | 2018-03-01 | 株式会社日立製作所 | Superconducting coil and manufacturing method thereof |
| WO2021100789A1 (en) * | 2019-11-18 | 2021-05-27 | 古河電気工業株式会社 | Superconducting coil, method for producing same, and rectangular superconducting wire material for superconducting coil |
| CN114746964A (en) * | 2019-11-18 | 2022-07-12 | 古河电气工业株式会社 | Superconducting coil, method for manufacturing same, and superconducting flat wire for superconducting coil |
| US20210296034A1 (en) * | 2020-03-17 | 2021-09-23 | Kabushiki Kaisha Toshiba | Superconducting coil, superconducting device, and superconducting wire rod for superconducting coil |
| US11791080B2 (en) * | 2020-03-17 | 2023-10-17 | Kabushiki Kaisha Toshiba | Superconducting coil, superconducting device, and superconducting wire rod for superconducting coil |
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