JPH11273936A - Winding structure of oxide superconductor coil - Google Patents
Winding structure of oxide superconductor coilInfo
- Publication number
- JPH11273936A JPH11273936A JP7368998A JP7368998A JPH11273936A JP H11273936 A JPH11273936 A JP H11273936A JP 7368998 A JP7368998 A JP 7368998A JP 7368998 A JP7368998 A JP 7368998A JP H11273936 A JPH11273936 A JP H11273936A
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- Prior art keywords
- oxide superconducting
- wire
- wound
- core
- winding
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、酸化物超電導コイ
ルの巻線構造に係わり、特に酸化物超電導コイルの熱処
理後の端子接合，コイルの積層接合に好適な巻線構造に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding structure of an oxide superconducting coil, and more particularly to a winding structure suitable for terminal bonding of an oxide superconducting coil after heat treatment and lamination bonding of the coil.
【０００２】[0002]
【従来の技術】従来、超電導材料としてはＮｂＴｉやＮ
ｂ3Ｓｎ 等の金属系超電導導体が知られていた。しか
し、これらの金属系超電導導体は臨界温度が低く、冷却
には高価な液体ヘリウムが必要であった。ところが１９
８７年になって液体窒素の沸点温度（７７Ｋ）で超電導
になる酸化物超電導材が発見され、これらが実用化可能
となれば、安価でかつ取扱容易な液体窒素で金属系超電
導材で達成できなかった高磁界発生コイルの製作が可能
となる。2. Description of the Related Art Conventionally, NbTi and N
Metallic superconductors such as b 3 Sn have been known. However, these metal-based superconductors have low critical temperatures, and require expensive liquid helium for cooling. But 19
In 1987, oxide superconducting materials that became superconducting at the boiling point of liquid nitrogen (77 K) were discovered, and if these could be put to practical use, they could be achieved with metal superconducting materials using inexpensive and easy-to-handle liquid nitrogen. It is possible to manufacture a high magnetic field generating coil that has not been provided.
【０００３】以上のようなことから、酸化物超電導線材
を用いたエネルギー分野での応用や超電導薄膜を用いた
デバイス分野での応用が期待されている。現在では、超
電導粉末あるいは前記粉末を銀等の金属シースに充填し
た後伸線，圧延等の加工を施すパウダーインチューブ
法、あるいは超電導粉末を含んだ懸濁液の中に基板を連
続的に浸し、その両面に懸濁液を吸着させるデップコー
ト法を用いることによって、短尺線では２０Ｋ以下の温
度領域で、高磁界中でも１０万Ａ／cm2 を越える実用レ
ベルの臨界密度が得られるまでに開発が進んでいる。[0003] In view of the above, applications in the field of energy using an oxide superconducting wire and applications in a device using a superconducting thin film are expected. At present, a superconducting powder or a powder-in-tube method in which the powder is filled in a metal sheath of silver or the like and then subjected to processing such as drawing or rolling, or a substrate is continuously immersed in a suspension containing the superconducting powder. Developed by using a dip coating method that adsorbs the suspension on both surfaces, until a critical level of practical level exceeding 100,000 A / cm 2 can be obtained even in a high magnetic field in a temperature range of 20K or less for short wires. Is progressing.
【０００４】また、最近では銀シースのビスマス系高温
超電導線材をコイル化し、それを十個積層した直径２０
０mm，高さ９３mm，重さ２０kgのコイルを試作し、百ワ
ットの電球を１秒間点灯できる百ジュールのエネルギー
貯蔵に成功したことが報じられている。この他、酸化物
粉末を銀パイプに挿入し、これらを加工して得られた線
材をソレノイド状に巻いてコイル化し、このコイルを空
気中で熱処理して酸化物超電導コイルとするものが特開
平6−251929 号公報に記載されている。また、希土類元
素およびそれらの組み合わせによる単結晶状のものを結
晶化してコイルにするものが特開平7−245211 号公報に
記載されている。Recently, a bismuth-based high-temperature superconducting wire having a silver sheath has been coiled, and ten coils of the same have a diameter of 20 mm.
It has been reported that a prototype coil of 0 mm, height of 93 mm and weight of 20 kg has been successfully manufactured, and has successfully stored energy of 100 joules capable of lighting a 100 watt bulb for 1 second. In addition, Japanese Unexamined Patent Publication (Kokai) No. H10-214686 discloses an oxide superconducting coil in which an oxide powder is inserted into a silver pipe, a wire obtained by processing these is wound into a solenoid shape into a coil, and this coil is heat-treated in air to form an oxide superconducting coil. It is described in JP-A-6-251929. Japanese Patent Application Laid-Open No. 7-245211 discloses a method of crystallizing a single crystal of a rare earth element or a combination thereof into a coil.
【０００５】しかし、線材間の短絡あるいは熱処理後の
酸化物超電導線材自身の熱伸び変形や歪み発生による、
コイルの超電導特性が線材特性より大きく低下する問題
および熱処理後のコイル端子接続困難なる問題があっ
た。[0005] However, due to short-circuit between wires or thermal expansion deformation or distortion of the oxide superconducting wire itself after heat treatment,
There was a problem that the superconducting characteristics of the coil were much lower than the wire material characteristics and a problem that it was difficult to connect the coil terminals after the heat treatment.
【０００６】[0006]
【発明が解決しようとする課題】上記、従来技術におけ
る問題点を解決し、好適な酸化物超電導コイルを得るた
めには、酸化物超電導線材の巻線構造が重要である。特
に、酸化物超電導線材は熱処理を施すとセラミックス状
態になるので、熱処理後の酸化物超電導線材には機械的
応力の印加や無理な変形、あるいは張力印加等を与えな
いように注意が必要である。In order to solve the above-mentioned problems in the prior art and obtain a suitable oxide superconducting coil, the winding structure of the oxide superconducting wire is important. In particular, since the oxide superconducting wire becomes a ceramic state when subjected to heat treatment, care must be taken not to apply mechanical stress, unreasonable deformation, or tension application to the heat-treated oxide superconducting wire. .
【０００７】しかし、補強線材は十分に薄く柔軟性があ
ること、巻線後に絶縁性が低下しないこと、そして、熱
処理後の巻線した酸化物超電導線材に直接機械的応力や
熱歪みを与えることなく、コイル間の端子接合や電流供
給の電源端子接続を簡単にして容易にできる巻線構造が
要求される。[0007] However, the reinforcing wire must be sufficiently thin and flexible, the insulating property must not be reduced after winding, and mechanical stress or thermal strain should be directly applied to the wound oxide superconducting wire after heat treatment. In addition, there is a demand for a winding structure capable of simplifying and easily connecting terminals between coils and connecting power supply terminals for supplying current.
【０００８】本発明の目的は、上記の点に鑑みてなされ
たもので、巻線した熱処理後の酸化物超電導線材に直接
機械的応力印加や人的接触なることを抑制し、線材の保
護向上と、コイルへの電流供給端子および積層コイル間
端子の接合作業性の向上を図りつつ簡単に溶着接合で
き、そして、積層構造の大形酸化物超電導コイル用の単
位コイルとしても利用できる、好適な酸化物超電導コイ
ルの巻線構造を提供することにある。An object of the present invention has been made in view of the above points, and it is possible to suppress direct application of mechanical stress or human contact to a wound and heat-treated oxide superconducting wire, thereby improving the protection of the wire. It can be easily welded and joined while improving the joining workability of the current supply terminal and the terminal between the laminated coils to the coil, and can also be used as a unit coil for a large oxide superconducting coil having a laminated structure. An object of the present invention is to provide a winding structure of an oxide superconducting coil.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明の第１実施例の酸化物超電導コイルの巻線構
造は、酸化物超電導線材を巻線する巻芯を、外周部に凹
溝を有した円筒巻芯とし、その円筒巻芯の凹溝に極低抵
抗導電材の端子板を介在し、端子板に密着して極低抵抗
導電材の端子線材を巻回し、その端子線材に接合して酸
化物超電導線材と補強絶縁線材を巻線し、その外周に、
酸化物超電導線材に接合して極低抵抗導電材の端子線材
を巻回固定し、熱処理形成したことを特徴とする。In order to achieve the above object, a winding structure of an oxide superconducting coil according to a first embodiment of the present invention comprises a winding core for winding an oxide superconducting wire on an outer peripheral portion. A cylindrical core having a concave groove, a terminal plate of an extremely low-resistance conductive material is interposed in the concave groove of the cylindrical core, and a terminal wire of an extremely low-resistance conductive material is wound in close contact with the terminal plate. Oxide superconducting wire and reinforced insulated wire are wound by joining to the wire,
It is characterized in that a terminal wire made of an extremely low-resistance conductive material is wound and fixed by being joined to an oxide superconducting wire, and then heat-treated.
【００１０】また、本発明の第２実施例の巻線構造は、
円筒巻芯の長さ方向中央部に円盤状の凸部を設けた凹凸
巻芯とし、凸部の両側の上段差部と下段差部に連通し、
内周部から外周部に向けて絶縁補強線材とともに酸化物
超電導線材を巻線し、その上段差部と下段差部コイルの
最終巻線線材に接して極低抵抗導電材の端子線材を巻回
固定し、熱処理後に、コイル外周部で任意に端子接合で
きることを特徴とする。そして、絶縁補強線材には、巻
線時の張力強弱がとれ易く、酸化被膜作製の容易なステ
ンレス鋼材、あるいはそれらの合金材が好ましい。Further, the winding structure of the second embodiment of the present invention is as follows.
A concave-convex core with a disk-shaped protrusion at the center in the length direction of the cylindrical core, communicating with the upper and lower steps on both sides of the protrusion,
The oxide superconducting wire is wound together with the insulation reinforcing wire from the inner circumference to the outer circumference, and the terminal wire of extremely low resistance conductive material is wound in contact with the final winding wire of the upper step and lower step coil. It is characterized in that the terminal can be arbitrarily joined at the outer periphery of the coil after fixing and heat treatment. As the insulating reinforcing wire, a stainless steel material or an alloy material thereof, which can easily take the strength and strength at the time of winding and can easily form an oxide film, is preferable.
【００１１】また、酸化物超電導線材の巻き始めと巻き
終わりに巻回する端子線材には、銀材あるいは銅材が好
適である。Further, silver or copper is suitable for the terminal wire wound around the beginning and end of winding of the oxide superconducting wire.
【００１２】また、酸化物超電導線材の巻線には、絶縁
補強線材を内側に、酸化物超電導線材を外側にして巻線
すると、巻線したコイルの外周に酸化物超電導線材が位
置するので、端子線材との接続が容易である。そして、
端子線材は酸化物超電導線材の厚さに対して数十倍のも
のを使用し、端子線材を、巻線した酸化物超電導コイル
外径の径より小さく曲げ、巻回時のスプリングバック作
用を利用した巻回にすると端末固定が容易である。[0012] Further, when the winding of the oxide superconducting wire is wound with the insulation reinforcing wire inside and the oxide superconducting wire outside, the oxide superconducting wire is located on the outer periphery of the wound coil. Connection with terminal wires is easy. And
Use a terminal wire that is several tens of times the thickness of the oxide superconducting wire, bend the terminal wire smaller than the diameter of the wound oxide superconducting coil, and use the springback effect when winding. When the winding is made in such a manner, the terminal can be easily fixed.
【００１３】即ち、シングルパンケーキ巻きコイル、あ
るいはダブルパンケーキ巻きコイルの巻き始めと巻き終
わりの線材端子に接合し、極低抵抗導電材の端子線材を
巻回固定し、熱処理作製した酸化物超電導コイルは、直
接酸化物超電導線材に触れることなく、巻線したコイル
の外周部で、任意の位置で給電端子あるいは積層したコ
イル間端子を溶着接合できる。That is, a single pancake wound coil or a double pancake wound coil is joined to a wire terminal at the beginning and end of winding, and a terminal wire of an extremely low resistance conductive material is wound and fixed, and the heat-treated oxide superconductor is produced. The coil can weld-bond a power supply terminal or a laminated inter-coil terminal at an arbitrary position on the outer peripheral portion of the wound coil without directly touching the oxide superconducting wire.
【００１４】また、巻線した酸化物超電導線材の外周は
端子線材で保護されるので、熱処理作製後の酸化物超電
導線材への直接的な機械的応力の印加、あるいは人的接
触は防止される。このようにすることによって、端子接
合が簡単で取扱やすく、信頼性の高い多層積層構造にも
利用できる酸化物超電導単位コイルを得ることができ
る。Further, since the outer periphery of the wound oxide superconducting wire is protected by the terminal wire, direct application of mechanical stress to the oxide superconducting wire after heat treatment fabrication or human contact is prevented. . By doing so, it is possible to obtain an oxide superconducting unit coil that can be easily used in terminal bonding and that can be used in a highly reliable multilayer laminated structure.
【００１５】[0015]
【発明の実施の形態】以下、本発明の実施例を図に基づ
いて詳細に説明する。図１に本発明の実施例を示す酸化
物超電導コイルの外観斜視図を示す。図２に本発明の酸
化物超電導コイルを巻線する巻芯の外観斜視図を示す。
図３に本発明の酸化物超電導コイルの巻き始め状態の外
観斜視図を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an external perspective view of an oxide superconducting coil showing an embodiment of the present invention. FIG. 2 is an external perspective view of a core for winding the oxide superconducting coil of the present invention.
FIG. 3 shows an external perspective view of the oxide superconducting coil of the present invention in a winding start state.
【００１６】図１から図３において、酸化物超電導コイ
ル１は、円筒巻芯２と、円筒巻芯２の外周に凹溝３を設
け、そこに、０℃における電気抵抗値数十ｎΩ・ｍの極
低抵抗導電材、即ち、銀材あるいは銅材等の合金材で形
成した端子板４を、円筒巻芯２の端面５より長さ方向に
突き出し、外周面６と同一周面をなすように介在してい
る。円筒巻芯２の周面は、全周面を酸化被膜１７で絶縁
されている。そして、その外周に巻線する酸化物超電導
線材より厚い極低抵抗導電材の端子線材７ａを巻回し、
端子線材７ａの周面に接合して酸化物超電導線材８と補
強線材９を巻線し、その酸化物超電導線材８を極低抵抗
導電材の端子線材７ｂで巻回固定している。1 to 3, an oxide superconducting coil 1 is provided with a cylindrical core 2 and a concave groove 3 on the outer periphery of the cylindrical core 2, and has an electric resistance of several tens nΩ · m at 0 ° C. Terminal plate 4 made of an extremely low-resistance conductive material, that is, an alloy material such as silver or copper, is projected in the length direction from the end surface 5 of the cylindrical core 2 so as to form the same peripheral surface as the outer peripheral surface 6. Intervenes. The entire peripheral surface of the cylindrical core 2 is insulated by the oxide film 17. Then, a terminal wire 7a of an extremely low resistance conductive material thicker than the oxide superconducting wire wound around the outer periphery thereof is wound,
An oxide superconducting wire 8 and a reinforcing wire 9 are wound around the peripheral surface of the terminal wire 7a, and the oxide superconducting wire 8 is wound and fixed with a terminal wire 7b of an extremely low-resistance conductive material.
【００１７】また、端子線材７ｂの端部１０は、端子線
材７ｂ自身のスプリングバック作用による収縮力と高温
絶縁材１１で固定し、その端子線材７ｂの外部をバネ材
１２で解体可能に固定している。そして、その端子線材
７ｂ外周のバネ材１２は、熱処理形成後の常温状態で高
温絶縁材１１の周部を熱硬化性絶縁材１３で強固に接着
固定した後、バネ材１２を解体し、シングルパンケーキ
巻きコイルを形成する。バネ材１２の解体はピン穴１４
にドライバー的なものを差し込み開くことにより容易に
解体できる。Further, the end 10 of the terminal wire 7b is fixed with the contraction force of the spring back action of the terminal wire 7b itself and the high-temperature insulating material 11, and the outside of the terminal wire 7b is fixed with the spring material 12 so that it can be disassembled. ing. Then, the spring material 12 on the outer periphery of the terminal wire 7b is firmly bonded and fixed with a thermosetting insulating material 13 at a peripheral portion of the high-temperature insulating material 11 in a normal temperature state after heat treatment, and then the spring material 12 is disassembled. Form a pancake wound coil. The spring material 12 is dismantled with a pin hole 14
It can be easily dismantled by inserting a driver-like object into it.
【００１８】以上のように構成した酸化物超電導コイル
１の巻線構造は、熱処理作製した複数個のシングルパン
ケーキ巻きコイルの積層接合、あるいは外部電源から電
流を供給する端子接合を、コイルの周部で溶着接合する
ことから、酸化物超電導線材８の巻き始めとなる円筒巻
芯２の外周に凹溝３を設け、円筒巻芯２の端面５より突
き出し、外周面６に同一周面となる端子板４を介在し、
その外周を端子線材７ａを巻き、端子線材７ａ周面に接
合して酸化物超電導線材８を巻線し、酸化物超電導線材
８の巻き終わりに接合して端子線材７ｂを巻回固定した
巻線構造となっている。The winding structure of the oxide superconducting coil 1 configured as described above is formed by laminating a plurality of single-pancake-wound coils formed by heat treatment or connecting terminals to supply current from an external power supply to the periphery of the coil. Since the joining is performed by welding at the portion, the concave groove 3 is provided on the outer periphery of the cylindrical core 2 where the winding of the oxide superconducting wire 8 starts, and protrudes from the end surface 5 of the cylindrical core 2 to become the same peripheral surface on the outer peripheral surface 6. With the terminal plate 4 interposed,
The outer periphery thereof is wound with a terminal wire 7a, joined to the peripheral surface of the terminal wire 7a, wound with an oxide superconducting wire 8, joined at the end of the winding of the oxide superconducting wire 8, and wound and fixed with a terminal wire 7b. It has a structure.
【００１９】以上のように構成した本実施例の巻線構造
によれば、酸化物超電導線材８の内周部と外周部に銀材
の端子線材７ａ，７ｂを介在した巻線構造は、コイルへ
の電源供給端子を接合する際に、熱処理後の酸化物超電
導線材８に直接接触したり、機械的応力を与えることな
く任意に、容易に溶着接合できる接合端子部を確保し、
さらに、外部周辺から酸化物超電導線材８への飛散物の
衝突、あるいは人的接触を保護している。According to the winding structure of the present embodiment configured as described above, the winding structure in which the silver terminal wires 7a and 7b are interposed between the inner and outer peripheral portions of the oxide superconducting wire 8 is a coil. When joining the power supply terminal to the Oxide superconducting wire 8 after heat treatment, a joint terminal portion which can be easily welded and joined without any mechanical stress is secured.
Furthermore, the collision of the scattered matter to the oxide superconducting wire 8 from the outside periphery or the human contact is protected.
【００２０】即ち、酸化物超電導線材８を巻線する前
に、円筒巻芯２の外周に凹溝３を設け、外部電源からの
電流供給端子を接合する端子板４を介在し、その周囲を
酸化物超電導線材８への半田溶着防止と機械的応力の印
加防止を図る端子線材７ａを巻回し、その外周に酸化物
超電導線材８を巻線し、周部を端子線材７ｂで巻回して
熱処理作製することにより、熱処理を施しセラミックス
状になった酸化物超電導線材８に触れたり、直接機械的
応力を印加することなく、外部からの電流供給端子を容
易に溶着接合できる。That is, before winding the oxide superconducting wire 8, a concave groove 3 is provided on the outer periphery of the cylindrical core 2, and a terminal plate 4 for connecting a current supply terminal from an external power supply is interposed. A terminal wire 7a for preventing solder welding and application of mechanical stress to the oxide superconducting wire 8 is wound, the oxide superconducting wire 8 is wound around the outer periphery thereof, and the peripheral portion is wound with the terminal wire 7b for heat treatment. By manufacturing, the current supply terminal from the outside can be easily welded and joined without touching the oxide superconducting wire 8 which has been heat-treated and turned into a ceramic state, or without directly applying a mechanical stress.
【００２１】また、作業時の人的接触や周辺からの飛散
物の衝突防止を図りつつ、機械的強度向上を図り、積層
コイルとしても利用できる好適な酸化物超電導コイルの
巻線構造を提供することができる。Further, the present invention provides a suitable winding structure of an oxide superconducting coil which can be used as a laminated coil while improving the mechanical strength while preventing human contact during work and collision of scattered matter from the periphery. be able to.
【００２２】以上のように、第１実施例に示す巻線構造
は、シングルパンケーキ巻きコイルの巻き始めと巻き終
わり、つまり円筒巻芯２の外周部と酸化物超電導線材８
を巻線した外周を端子線材７ａ，７ｂで巻回していた
が、シングルパンケーキ巻きコイルの代わりに、巻線し
た酸化物超電導線材８の巻き始めと巻き終わりがともに
外周部になるダブルパンケーキ巻きコイルとし、その巻
き始めと巻き終わりの線材外周を極低抵抗導電材で巻回
した巻線構造としても、前記実施例と同等の作用効果を
得ることができる。As described above, the winding structure shown in the first embodiment is the same as the winding start and end of a single pancake wound coil, that is, the outer peripheral portion of the cylindrical core 2 and the oxide superconducting wire 8
Was wound around the terminal wires 7a and 7b, but instead of a single pancake wound coil, a double pancake was obtained in which the wound start and end of the wound oxide superconducting wire 8 were both the outer periphery. The same operation and effect as those of the above embodiment can be obtained even if the winding structure is a wound coil in which the outer periphery of the wire at the beginning and end of the winding is wound with an extremely low resistance conductive material.
【００２３】以下、本発明の第２実施例を図を用いて詳
細に説明する。図４に本発明の第２実施例を示す酸化物
超電導コイルの巻芯の外観斜視図を示す。図５に本発明
の第２実施例を示す酸化物超電導コイルの一部破断外観
斜視図を示す。Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 4 is an external perspective view of a core of an oxide superconducting coil according to a second embodiment of the present invention. FIG. 5 is a partially cutaway perspective view of an oxide superconducting coil according to a second embodiment of the present invention.
【００２４】図４，図５に示す第２実施例は、酸化物超
電導線材８を巻線する巻芯を、内芯１５と、内芯１５の
長さ方向中央部に円盤状の凸部１６を設けた凹凸巻芯と
し、その凹凸巻芯の全周を酸化被膜１７で覆った絶縁凹
凸巻芯１８を形成し、絶縁凹凸巻芯１８の凸部１６を挟
んで上段差部１９と下段差部２０を設け、そこに酸化物
超電導線材８と補強線材９をともに巻線し、上コイル２
１と下コイル２２を形成している。In the second embodiment shown in FIGS. 4 and 5, the winding core for winding the oxide superconducting wire 8 is composed of an inner core 15 and a disc-shaped convex portion 16 at the center in the longitudinal direction of the inner core 15. An insulated winding core 18 in which the entire periphery of the uneven winding core is covered with an oxide film 17 is formed, and the upper step 19 and the lower step 19 are sandwiched by the projection 16 of the insulating uneven winding core 18. A portion 20 is provided, on which the oxide superconducting wire 8 and the reinforcing wire 9 are wound together.
1 and the lower coil 22.
【００２５】上コイル２１と下コイル２２は貫通穴２３
を介して連通したダブルパンケーキ巻きコイルとなって
いる。そして、上コイル２１と下コイル２２の外周を、
最終線材ターンコイル２４ａ，２４ｂ外周に位置する最
終補強線材２５ａ，２５ｂの端部の一部分を短くし、最
終線材ターンコイル２４ａ，２４ｂに接合して極低抵抗
導電材の端子線材７ｃ，７ｄを巻回固定したものであ
る。The upper coil 21 and the lower coil 22 have through holes 23
It is a double pancake wound coil that communicates through Then, the outer circumferences of the upper coil 21 and the lower coil 22 are
A part of the end of the final reinforcing wire 25a, 25b located on the outer periphery of the final wire turn coil 24a, 24b is shortened and joined to the final wire turn coil 24a, 24b to wind the terminal wire 7c, 7d of a very low resistance conductive material. It is fixed one time.
【００２６】以上のように、円筒状の内芯１５の長さ方
向中央部に円盤状の凸部１６を設けた絶縁凹凸巻芯１８
を形成し、その凸部１６を挟んで上段差部１９と下段差
部２０に上コイル２１と下コイル２２を巻線し、例え
ば、上コイル２１の最終線材ターンコイル２４ａを巻き
始めとし、下コイル２２の最終線材ターンコイル24ｂを
巻き終わりとすると、その巻き始めと巻き終わりの最終
線材ターンコイル24ａ，２４ｂに接続して端子線材７
ｃ，７ｄを巻回した巻線構造は、コイルの巻き始めと巻
き終わり端子がコイル外周に露出するので、電流を供給
する電源端子、あるいは巻線作製した複数個の酸化物超
電導コイル１の積層接合接続作業が非常に容易になる。As described above, the insulated and concave winding core 18 provided with the disc-shaped projection 16 at the center in the length direction of the cylindrical inner core 15.
Is formed, and the upper coil 21 and the lower coil 22 are wound around the upper step 19 and the lower step 20 with the protrusion 16 interposed therebetween. For example, the winding of the final wire rod coil 24a of the upper coil 21 is started. Assuming that the last wire turn coil 24b of the coil 22 is to be wound, the terminal wire 7 is connected to the last wire turn coils 24a and 24b at the beginning and end of the winding.
In the winding structure in which c and 7d are wound, since the winding start and end terminals of the coil are exposed on the outer periphery of the coil, a power supply terminal for supplying a current, or a laminate of a plurality of wound oxide superconducting coils 1 is formed. The joining and connecting work becomes very easy.
【００２７】さらに、巻線した酸化物超電導線材８は端
子線材７ｃ，７ｄで囲まれるので、酸化物超電導線材８
の保護向上を図ることができる。また、複数個の積層接
合作業に関しても、コイル外周部が溶着接合部となるの
で、簡単に確実に溶着接合できるので、接合抵抗による
超電導特性低下なる心配、あるいは接合時の機械的応力
印加による線材破損なる心配がなく、個々のコイル特性
を維持しつつ、信頼性の高い、そして、高精度の積層構
造大形酸化物超電導コイル製作に好適な酸化物超電導単
位コイルを得ることができる。Further, since the wound oxide superconducting wire 8 is surrounded by the terminal wires 7c and 7d, the oxide superconducting wire 8
Protection can be improved. Also, in the case of a plurality of laminating operations, the outer peripheral portion of the coil serves as a welded portion, so that welding can be easily and reliably welded. It is possible to obtain an oxide superconducting unit coil suitable for fabricating a large-sized oxide superconducting coil with high reliability and high accuracy while maintaining individual coil characteristics without fear of breakage.
【００２８】また、以上の実施例においては、酸化物超
電導線材８に接合して端子線材７ａ，７ｂ，７ｃ，７ｄ
を巻回していたが、図示はしていないが、端子線材７
ａ，７ｂ，７ｃ，７ｄ等の厚さ方向端部に凹凸部を設け
た凹凸端子線材を作製し、あるいは酸化物超電導線材８
の巻き始めと巻き終わりの最終線材ターンコイル24ａ，
２４ｂの外周を、最終線材ターンコイル２４ａ，２４ｂ
に接触して極低抵抗導電材の端材で１ターンを巻回し、
その１ターン巻きした端材の間に絶縁金属材を介在し、
絶縁金属材に１ターン巻きの端材端部をネジ止め固定す
る巻線構造としても、前記実施例に近い作用効果を得る
ことができる。In the above embodiment, the terminal wires 7a, 7b, 7c, 7d are joined to the oxide superconducting wire 8 and
Although not shown, the terminal wire 7
a, 7b, 7c, 7d, etc., to produce an uneven terminal wire having an uneven portion at the end in the thickness direction, or to use an oxide superconducting wire 8
The end wire turn coil 24a at the beginning and end of winding
24b, the outer periphery of the final wire turn coil 24a, 24b
, And one turn is wound with a piece of extremely low resistance conductive material,
An insulating metal material is interposed between the scraps that have been wound one turn,
Even in the case of a winding structure in which the end portion of the one-turn wound end piece is screwed and fixed to the insulating metal material, the effect similar to that of the above-described embodiment can be obtained.
【００２９】[0029]
【発明の効果】以上説明したように、本発明によれば、
酸化物超電導線材の巻き始めと巻き終わりの線材端部
に、極低抵抗導電材の端子板，端子線材を介在巻回する
ことにより、コイルに電流を供給する電源端子、あるい
は複数個の積層コイル間の端子接合を、酸化物超電導線
材に影響を与えずに容易に溶着接合できる。また、周辺
からの飛散物の衝突や作業時の人的接触を保護し、接合
端子部の信頼性向上を図り、機械的応力に強く、積層構
造の大形酸化物超電導コイル用の単位コイルに利用でき
る、好適な酸化物超電導コイルの製作が可能となる。As described above, according to the present invention,
A power supply terminal that supplies current to the coil by winding a terminal plate of ultra-low resistance conductive material and a terminal wire around the end of the wire at the beginning and end of winding of the oxide superconducting wire, or a plurality of laminated coils The terminal bonding between them can be easily welded and joined without affecting the oxide superconducting wire. In addition, it protects against collision of scattered objects from the periphery and human contact during work, improves the reliability of the junction terminal, is resistant to mechanical stress, and is a unit coil for large oxide superconducting coils with a laminated structure. It is possible to manufacture a suitable oxide superconducting coil that can be used.
【図１】本発明の実施例に係わる酸化物超電導コイルの
製作外観を示す斜視図である。FIG. 1 is a perspective view showing the appearance of an oxide superconducting coil according to an embodiment of the present invention.
【図２】本発明の実施例に係わる酸化物超電導コイルの
巻芯を示す外観斜視図である。FIG. 2 is an external perspective view showing a core of the oxide superconducting coil according to the embodiment of the present invention.
【図３】本発明の実施例に係わる酸化物超電導コイルの
巻き始め状態を示す外観斜視図である。FIG. 3 is an external perspective view showing a winding start state of the oxide superconducting coil according to the embodiment of the present invention.
【図４】本発明の第２実施例に係わる酸化物超電導コイ
ルの巻芯を示す一部破断外観斜視図である。FIG. 4 is a partially broken external perspective view showing a core of an oxide superconducting coil according to a second embodiment of the present invention.
【図５】本発明の第２実施例に係わる酸化物超電導コイ
ルの巻線構造を示す一部破断外観斜視図である。FIG. 5 is a partially broken external perspective view showing a winding structure of an oxide superconducting coil according to a second embodiment of the present invention.
１…酸化物超電導コイル、２…円筒巻芯、３…凹溝、４
…端子板、５…端面、６…外周面、７ａ，７ｂ，７ｃ，
７ｄ…端子線材、８…酸化物超電導線材、９…補強線
材、１０…端部、１１…高温絶縁材、１２…バネ材、１
３…熱硬化性絶縁材、１４…ピン穴、１５…内芯、１６
…凸部、１７…酸化被膜、１８…絶縁凹凸巻芯、１９…
上段差部、２０…下段差部、２１…上コイル、２２…下
コイル、２３…貫通穴、２４ａ，２４ｂ…最終線材ター
ンコイル、２５ａ，２５ｂ…最終補強線材。DESCRIPTION OF SYMBOLS 1 ... Oxide superconducting coil, 2 ... Cylindrical core, 3 ... Groove, 4
... terminal plate, 5 ... end face, 6 ... outer circumference face, 7a, 7b, 7c,
7d: terminal wire, 8: oxide superconducting wire, 9: reinforcing wire, 10: end, 11: high-temperature insulating material, 12: spring material, 1
3: thermosetting insulating material, 14: pin hole, 15: inner core, 16
... Convex part, 17 ... Oxide film, 18 ... Insulating uneven concave and convex core, 19 ...
Upper step portion, 20: Lower step portion, 21: Upper coil, 22: Lower coil, 23: Through hole, 24a, 24b: Final wire turn coil, 25a, 25b: Final reinforcing wire.
Claims (7)
物超電導線材を巻線した酸化物超電導コイルにおいて、
巻線した酸化物超電導線材の巻き始めと巻き終わりに酸
化物超電導線材と異なった導電材を巻回し、熱処理形成
したことを特徴とする酸化物超電導コイルの巻線構造。1. An oxide superconducting coil in which a core and an oxide superconducting wire coated with metal on the outer periphery of the core are wound.
A winding structure of an oxide superconducting coil, wherein a conductive material different from the oxide superconducting wire is wound at the beginning and end of winding of the wound oxide superconducting wire and heat-treated.
物超電導線材を巻線した酸化物超電導コイルにおいて、
巻線した酸化物超電導線材の巻き始めと巻き終わりに、
極低抵抗導電材の端子線材を巻回したことを特徴とする
酸化物超電導コイルの巻線構造。2. An oxide superconducting coil in which a core and an oxide superconducting wire coated with metal on the outer periphery of the core are wound.
At the beginning and end of winding of the wound oxide superconducting wire,
A winding structure of an oxide superconducting coil, wherein a terminal wire made of an extremely low resistance conductive material is wound.
線材の巻き始めと巻き終わりに800℃以上の高温に耐
え、０℃における電気抵抗値が数十ｎΩ・ｍ近傍の端子
線材を巻回し、熱処理作製したことを特徴とする酸化物
超電導コイルの巻線構造。3. The terminal wire according to claim 2, wherein the wound oxide superconducting wire is resistant to a high temperature of 800 ° C. or more at the beginning and end of winding and has an electric resistance at 0 ° C. of about several tens nΩ · m. A winding structure of an oxide superconducting coil characterized by being turned and heat-treated.
物超電導線材を巻線した酸化物超電導コイルにおいて、
巻線した酸化物超電導線材の巻き始めと巻き終わり線材
に接して、熱処理作製後に任意の位置で溶着接合でき
る、極低抵抗導電材の端子線材を巻回したことを特徴と
する酸化物超電導コイルの巻線構造。4. An oxide superconducting coil in which a core and an oxide superconducting wire coated with metal on the outer periphery of the core are wound.
An oxide superconducting coil in which a terminal wire made of an extremely low-resistance conductive material that can be welded and joined at an arbitrary position after heat treatment is produced by being wound on the wound start and end of the wound oxide superconducting wire. Winding structure.
化物超電導線材を巻線した酸化物超電導コイルにおい
て、巻線する酸化物超電導線材の内周と外周に極低抵抗
導電材の端子線材を介在し、熱処理作製したことを特徴
とする酸化物超電導コイルの巻線構造。5. An oxide superconducting coil in which a metal core-coated oxide superconducting wire is wound around a core and an outer periphery of the core. A winding structure of an oxide superconducting coil characterized by being heat-treated with a terminal wire interposed therebetween.
化物超電導線材を巻線してなる酸化物超電導コイルにお
いて、円筒巻芯の外周に、極低抵抗導電材の突起部と凹
部を配設し、突起部と凹部の外周に極低抵抗導電材の端
子線材を介在し、その外周に酸化物超電導線材を巻線
し、外周部を極低抵抗導電材の端子線材で巻回し、熱処
理作製したことを特徴とする酸化物超電導コイルの巻線
構造。6. An oxide superconducting coil formed by winding a cylindrical core and an oxide superconducting wire coated with a metal on the cylindrical core, wherein a projection of an extremely low-resistance conductive material is provided on the outer periphery of the cylindrical core. A concave portion is provided, and a terminal wire of an extremely low-resistance conductive material is interposed on the outer periphery of the protrusion and the concave portion. A winding structure of an oxide superconducting coil characterized by being turned and heat-treated.
を設けた凹凸巻芯と、凹凸巻芯の凸部の両側に金属で被
覆した酸化物超電導線材を巻線した酸化物超電導コイル
において、凹凸巻芯の凸部の両側に酸化物超電導線材を
巻線し、その外周を極低抵抗導電材で巻回固定し、熱処
理作製したことを特徴とする酸化物超電導コイルの巻線
構造。7. An oxidized coil obtained by winding an uneven superconducting core provided with a brim-shaped projection at the center in the longitudinal direction of a cylindrical core and an oxide superconducting wire coated with metal on both sides of the projection of the uneven core. In an object superconducting coil, an oxide superconducting wire is wound on both sides of a convex portion of a concavo-convex winding core, and its outer periphery is wound and fixed with an extremely low-resistance conductive material, and heat-treated to produce an oxide superconducting coil. Winding structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7368998A JPH11273936A (en) | 1998-03-23 | 1998-03-23 | Winding structure of oxide superconductor coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7368998A JPH11273936A (en) | 1998-03-23 | 1998-03-23 | Winding structure of oxide superconductor coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11273936A true JPH11273936A (en) | 1999-10-08 |
Family
ID=13525442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7368998A Pending JPH11273936A (en) | 1998-03-23 | 1998-03-23 | Winding structure of oxide superconductor coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11273936A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008244278A (en) * | 2007-03-28 | 2008-10-09 | Sumitomo Electric Ind Ltd | Superconducting coil and superconducting device having the same |
| JP2009231442A (en) * | 2008-03-21 | 2009-10-08 | Kobe Steel Ltd | Method for winding superconducting coil, winding machine for superconducting coil, and superconducting coil |
| JP2010109287A (en) * | 2008-10-31 | 2010-05-13 | Toshiba Corp | Superconducting coil apparatus |
| JP2013055311A (en) * | 2011-08-11 | 2013-03-21 | Fujikura Ltd | Oxide superconducting coil and superconducting apparatus and manufacturing method of oxide superconducting coil |
| JP2015012199A (en) * | 2013-06-28 | 2015-01-19 | 株式会社東芝 | Superconducting coil device |
| US9934938B2 (en) | 2013-03-28 | 2018-04-03 | Hitachi High-Tech Science Corporation | Focused ion beam apparatus, method for observing cross-section of sample by using the same, and storage medium |
| CN114678207A (en) * | 2022-03-07 | 2022-06-28 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Parallel winding device suitable for REBCO metal insulated coil |
-
1998
- 1998-03-23 JP JP7368998A patent/JPH11273936A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008244278A (en) * | 2007-03-28 | 2008-10-09 | Sumitomo Electric Ind Ltd | Superconducting coil and superconducting device having the same |
| JP4687676B2 (en) * | 2007-03-28 | 2011-05-25 | 住友電気工業株式会社 | Superconducting coil and superconducting equipment provided with the superconducting coil |
| JP2009231442A (en) * | 2008-03-21 | 2009-10-08 | Kobe Steel Ltd | Method for winding superconducting coil, winding machine for superconducting coil, and superconducting coil |
| JP2010109287A (en) * | 2008-10-31 | 2010-05-13 | Toshiba Corp | Superconducting coil apparatus |
| JP2013055311A (en) * | 2011-08-11 | 2013-03-21 | Fujikura Ltd | Oxide superconducting coil and superconducting apparatus and manufacturing method of oxide superconducting coil |
| US9934938B2 (en) | 2013-03-28 | 2018-04-03 | Hitachi High-Tech Science Corporation | Focused ion beam apparatus, method for observing cross-section of sample by using the same, and storage medium |
| JP2015012199A (en) * | 2013-06-28 | 2015-01-19 | 株式会社東芝 | Superconducting coil device |
| CN114678207A (en) * | 2022-03-07 | 2022-06-28 | 合肥综合性国家科学中心能源研究院(安徽省能源实验室) | Parallel winding device suitable for REBCO metal insulated coil |
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