JPS59158014A - Compound superconductive conductor - Google Patents
Compound superconductive conductorInfo
- Publication number
- JPS59158014A JPS59158014A JP58032463A JP3246383A JPS59158014A JP S59158014 A JPS59158014 A JP S59158014A JP 58032463 A JP58032463 A JP 58032463A JP 3246383 A JP3246383 A JP 3246383A JP S59158014 A JPS59158014 A JP S59158014A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing body
- conductor
- compound superconducting
- superconducting
- compound
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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- Superconductors And Manufacturing Methods Therefor (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】
本発明は、化合物超電導導体の改良特にその補強構造に
関するものである。また本発明は、化合物超電導導体の
機械的強度の改善と共に可撓性、冷却効率および臨界電
流特性の改善を目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in compound superconducting conductors, and particularly to reinforcement structures thereof. Further, the present invention aims to improve the mechanical strength, flexibility, cooling efficiency, and critical current characteristics of a compound superconducting conductor.
従来、この種の超電導導体として第１図の如きものが提
案されている。第１図（ａ）は、補強体１の周囲に超電
導素線２が撚線されたものである。第１図（ｂ）は、超
電導素線２が予め撚線化された２次素線３が補強体１の
周囲に撚線されたものである。第１図（Ｃ）は、補強素
線１′および超電導素線２が撚線化され、さらにそれら
をテープ状補強体１によって巻かれたものである。第１
図（ｄ）は、超電導素線２が撚線され、これらが内部に
溝４を有する補強体１の内部にハング５０などで固めら
れたものである。第１図（Ｃ）は、第１図（ｂ）と同様
の超電導２次素線３を補強体１″の周囲に撚線化されて
後、これらを−辺か開放されたコの字型補強体１の内に
収納されたものである。第１図（ｆ）は、第１図（ｂ）
と同様の超電導２次素線３を予め撚線化し、これらを側
面に冷却孔５を有する補強体１の管内に収納したもので
ある。Conventionally, a superconducting conductor of this type as shown in FIG. 1 has been proposed. In FIG. 1(a), superconducting wires 2 are twisted around a reinforcing body 1. In FIG. 1(b), secondary strands 3, in which superconducting strands 2 are twisted in advance, are stranded around a reinforcing body 1. In FIG. In FIG. 1(C), a reinforcing wire 1' and a superconducting wire 2 are twisted and then wound around a tape-shaped reinforcing body 1. In FIG. 1st
In Figure (d), superconducting strands 2 are twisted and solidified with hangs 50 or the like inside a reinforcing body 1 having grooves 4 therein. FIG. 1(C) shows superconducting secondary strands 3 similar to those in FIG. 1(b) being twisted around a reinforcing body 1'' and then twisted into a U-shape with an open side. It is housed in the reinforcing body 1. Fig. 1(f) is the same as Fig. 1(b).
Superconducting secondary strands 3 similar to those shown in FIG.
これらの構造を化合物超電導導体に適用する場合つぎに
示す欠点がある。When these structures are applied to compound superconducting conductors, there are the following drawbacks.
１ 第１図（ａ）および（ｂ）に示す超電導導体は超電
導素線２又は２次素線３が最外層に位置するため絶縁処
理工程や′巻線工程などで受ける外部応力や歪に対する
保護機能がない
２ 第１図（Ｃ）に示す超電導導体しま、線材外部に不
連続に補強体１が配置されているため、長手方向に凹凸
があり、巻線工程においてコイルの隣接ターン間でこの
凹凸が無秩序に当接する結果、その部分に不規則なギャ
ップが生じ、応力集中が起り、電流特性が劣化する。1 In the superconducting conductor shown in Figures 1 (a) and (b), the superconducting strands 2 or secondary strands 3 are located in the outermost layer, so they are protected against external stress and strain received during the insulation treatment process, winding process, etc. No function 2 The superconducting conductor stripes shown in Figure 1 (C) have unevenness in the longitudinal direction because the reinforcing bodies 1 are placed discontinuously on the outside of the wire. As a result of the unevenness coming into contact with each other in a disorderly manner, irregular gaps are generated in the area, stress concentration occurs, and current characteristics deteriorate.
３ 第１図（ｄ）、（ｅ）および（ｆ）に示す超電導導
体は外部からの応力や歪に対する保護機能を有す々が、
補強体が切削、型押出などの機械加工で製作されたもの
であるため厚肉であり、軽量化することができず過剰の
占積率となって導体全体としての電流密度がそれだけ低
下する。3 The superconducting conductors shown in Figures 1(d), (e), and (f) have a protective function against external stress and strain, but
Since the reinforcing body is manufactured by machining such as cutting or die extrusion, it is thick and cannot be made lightweight, resulting in an excessive space factor and a corresponding decrease in the current density of the conductor as a whole.
また、補強体が厚肉であるため巻線工程での可撓性が悪
い。さらに、機械加工で伺加された冷却孔を多数密に分
布させるには限界があることや、巻線後のコイルは隣接
導体の冷却孔同士が会合する確率が少ないため冷媒の液
体ＨｅやＨｅガスの通路が隣接導体を連通せず冷却効率
が悪い。Furthermore, since the reinforcing body is thick, flexibility during the winding process is poor. Furthermore, there is a limit to densely distributing a large number of cooling holes added by machining, and there is a low probability that cooling holes of adjacent conductors will meet each other in the coil after winding. Gas passages do not communicate with adjacent conductors, resulting in poor cooling efficiency.
化合物超電導導体は、本来臨界温度、臨界磁場、臨界電
流密度と言った超電導特性が優れており、高磁界用巻線
として有望なものである。Compound superconducting conductors inherently have excellent superconducting properties such as critical temperature, critical magnetic field, and critical current density, and are promising as winding wires for high magnetic fields.
しかし化合物超電導導体は、合金超電導導体とは異なり
、歪を受けると超電導特性が著しく劣化するという歪敏
感性があり、通常０．２〜０．６係以上の歪領域では使
用に耐えない。一方、化合物超電導導体を使用する側か
らの要請として、小さい曲率半径に曲げうること、大電
流容量を有すること、長尺連続大導体であること、コイ
ル中での補強効果が均一に構成されていることである。However, unlike alloy superconducting conductors, compound superconducting conductors are strain-sensitive in that their superconducting properties are significantly degraded when subjected to strain, and they are usually unusable in a strain range of 0.2 to 0.6 coefficient or higher. On the other hand, the requirements of the users of compound superconducting conductors are that they must be able to be bent to a small radius of curvature, have a large current capacity, be a long continuous large conductor, and have a uniform reinforcement effect in the coil. It is that you are.
これらの要請に応えるものとして素線集合型化合物超電
導導体が注目されている。素線集合型化合物超電導導体
の代表的な形態は撚線、編組線、転位線およびこれらを
圧縮成形したものである。Wire assembly type compound superconducting conductors are attracting attention as a material that meets these demands. Typical forms of wire assembly type compound superconducting conductors are twisted wires, braided wires, dislocation wires, and compression molded products of these wires.
しかしながら素線集合型化合物超電導導体の本質的な欠
点は、■小さな張力で容易に長手方向に伸びかつ径方向
に収縮するため導体サイズか巻線時等で変化すること、
■素線間に間隙が多いので素線の充填率が低いことおよ
び■導体を補強体などで所定間隔に締め付げろなどのよ
うに素線か局部的に拘束されるとコイルにした場合５コ
イルに発生する強大な電磁力によって非締め封部の素線
に応力や歪が集中し、その結果超電導特性が著しく低下
することである。したがって集合型化合物超電導導体の
補強は、上述の本質的欠点を克服し、付随的に発生する
・可撓性、冷却効率および電流密度の低下を最小限にず
５る構造でなければならない。However, the essential drawbacks of the wire assembly type compound superconducting conductor are: (1) It easily stretches in the longitudinal direction and contracts in the radial direction under small tension, so the conductor size changes during winding, etc.;
■The filling rate of the wires is low because there are many gaps between the wires, and ■If the wires are locally restrained, such as by tightening the conductor at a predetermined interval with a reinforcing body, etc., if the wire is made into a coil. The strong electromagnetic force generated in the coil causes stress and strain to concentrate on the unsealed wires, resulting in a significant deterioration of superconducting properties. Therefore, the reinforcement of aggregated compound superconducting conductors must be of a structure that overcomes the above-mentioned essential drawbacks and minimizes the concomitant reductions in flexibility, cooling efficiency, and current density.
本発明はかかる点に鑑み種々の研究の結果、補強体を、
その突合せ部が導体の長手方向でジグザグに蛇行しかつ
その突合せ部に間隙が生じるようにして導体に付加する
ことにより、可撓性、強度、冷却効率および電流密度に
優れた化合物超電導導体を見い出したものである。In view of these points, the present invention has developed a reinforcing body as a result of various studies.
A compound superconducting conductor with excellent flexibility, strength, cooling efficiency, and current density was discovered by attaching the butt part to the conductor so that it meandered in a zigzag pattern in the longitudinal direction of the conductor and creating a gap between the butt parts. It is something that
すなわち、本発明は化合物超電導素線の複数本を集合し
てなる化合物超電導集合体の外周及び内部の少なくとも
いずれか一方に補強体を有する化合物超電導導体におい
て、該補強体に蛇行した間隙を該導体の長手方向に沼っ
て設けたことを特徴とする化合物超電導導体である。That is, the present invention provides a compound superconducting conductor having a reinforcing body on at least one of the outer periphery and the inside of a compound superconducting aggregate formed by assembling a plurality of compound superconducting strands. This is a compound superconducting conductor characterized in that it is disposed in a longitudinal direction.
以下、本発明を図面を参照して詳細に説明する。Hereinafter, the present invention will be explained in detail with reference to the drawings.
第２図は、本発明による化合物超電導導体の一例であり
、補強体の一部を拡開した状態を示す斜視図である。図
から明らかな如く、この導体は、化合物超電導フィラメ
ント２０を多数内蔵する所謂、多芯超電導素線２の撚線
からなる素線集合型化合物超電導導体６の周囲に、波形
部７を両縁に有する帯状補強体１を、その波形部７が突
合ぜ部８で間隙９が残るようにフォーミングしたもので
ある。FIG. 2 is an example of the compound superconducting conductor according to the present invention, and is a perspective view showing a partially expanded state of the reinforcing body. As is clear from the figure, this conductor has corrugated portions 7 on both edges around a strand-aggregated compound superconducting conductor 6 consisting of stranded wires of so-called multicore superconducting strands 2, which incorporates a large number of compound superconducting filaments 20. The band-shaped reinforcing body 1 is formed so that the corrugated portion 7 of the reinforcing body 1 has a butt portion 8 and a gap 9 remains.
このように本発明では、集合型化合物超電導導体６の囲
りに、帯状補強体１をフォーミングによって設けること
ができるので、帯状補強体１の肉厚を必要最少限とする
ことができる。したがって機械加工で作られていた従来
の補強体に比べて、薄肉化、軽量化かできるため導体全
体としての電流密度を向上することができる。In this way, in the present invention, the strip-shaped reinforcing body 1 can be provided around the aggregated compound superconducting conductor 6 by forming, so that the thickness of the strip-shaped reinforcing body 1 can be kept to the minimum necessary. Therefore, compared to conventional reinforcing bodies made by machining, the current density of the conductor as a whole can be improved because it can be made thinner and lighter.
さらに、本発明ではコイルなどにする際に導体を曲げて
も補強体に曲げしわなどを生じることがない。すなわち
、補強体１の突合せ部８には蛇行した間隙９が存へ在す
るので、この突合せ部８のある面を曲げの内側に来るよ
うに曲げると、突合せ部８のある面では補強体１は長手
方向に収縮力が働くが、間隙９が蛇行しているので、こ
の間隙９で収縮歪が吸収されて、補強体１のこの面はし
わを生ずることなく滑らかに湾曲することができる。Furthermore, in the present invention, even if the conductor is bent when forming a coil or the like, bending wrinkles or the like do not occur in the reinforcing body. That is, since there is a meandering gap 9 in the abutting part 8 of the reinforcing body 1, when the face with this abutting part 8 is bent so as to be on the inside of the bend, the face with the abutting part 8 is A contraction force acts in the longitudinal direction, but since the gap 9 is meandering, the contraction strain is absorbed by the gap 9, and this surface of the reinforcing body 1 can be smoothly curved without wrinkles.
波形部７の形状は、導体のサイズ、湾曲するときの曲率
半径、補強体の配置場所、所要冷却率などに応じて適宜
法められる。例えば曲率半径が小さい場合には、波形部
７０波高を高（しかつ波長（ピッチ）を短か（する。ま
た化合物超電導導体は許容曲げ半径よりも小さい曲率半
径で曲げると超電導特性を極度に劣化ｌ〜使用不能とな
るので、許容曲げ半径よりも小さくは曲がらないように
、突合せ部８０間隙９０間隔を設定しておくこともでき
る。すなわち、許容曲げ半径に曲げたときに、突合せ部
８の隣接波形部７が互に当接しこれがストッパーの働き
をして、それ以上もはや曲げられないようにすることも
できる。The shape of the corrugated portion 7 is determined as appropriate depending on the size of the conductor, the radius of curvature when curving, the placement location of the reinforcing body, the required cooling rate, and the like. For example, if the radius of curvature is small, the wave height of the corrugated portion 70 should be set high (and the wavelength (pitch) short). Also, when compound superconducting conductors are bent with a radius of curvature smaller than the allowable bending radius, the superconducting properties will be extremely degraded. Since the abutment part 80 becomes unusable, the gap 90 between the abutment parts 80 and 80 can be set so that the abutment part 80 does not bend smaller than the allowable bending radius.In other words, when the abutment part 8 is bent to the allowable bending radius, It is also possible for adjacent corrugations 7 to abut one another and act as a stop so that they can no longer be bent.
このほか、本発明では間隙９は、液体ヘリウムやヘリウ
ムガスが導体６内外に流出入するだめの冷媒流出入口と
しての働きをなすので、所要の冷却率に応じてこの間隙
９の間隔や蛇行の起伏を決めることができる。In addition, in the present invention, the gap 9 functions as a refrigerant inlet and outlet through which liquid helium and helium gas flow into and out of the conductor 6, so the spacing and meandering of the gap 9 can be adjusted according to the required cooling rate. You can decide the ups and downs.
第２図では突合せ部８は、補強体の１側面のみに設けた
例を示しているが、これに限らず、第３図（ａ）、（１
））、（Ｃ）及び（ｄ）にそれぞれ示す如く、補強体の
２面又は３面にまたがる突合せ部を設け、多方向への導
体の曲げを容易にすることもできる。第３図はいずれも
導体の囲りに設けた補強体のみを図示し導体の図示は省
略した。第３図（ａ）は、補強体１の１側面Ｘから上底
面７０２面にまたがって蛇行する間隙９を有するもので
あり、側面Ｘ又は上底面Ｙを曲げの内側に来るように曲
げることができろ。第３図（＋））は、補強体Ｊの１側
面Ｘから上底面Ｙと下底面Ｚとの３面にまたがって蛇行
する間隙９を有するものであり、側面Ｘ、上底面Ｙ又は
下底面Ｚを曲げの内側に来るように曲げることができる
。第３図（Ｃ）は、補強体１の側面Ｘ、上底面Ｙ及び側
面Ｗの３面にまたがって蛇行する間隙９を有するもので
あり、これら３面Ｘ、Ｙ、Ｖｉ’のいずれの面を曲げの
内側に来るようにしても曲げることができる。第３図（
ｄ）は第３図（ｄ）と同様に補強体１の側面Ｘ及び上底
面Ｙにまたがって蛇行する間隙９を有するものであるが
、波形部７が１方向に傾斜している点が第３図（ａ）と
異なっている。Although FIG. 2 shows an example in which the abutting portion 8 is provided only on one side of the reinforcing body, the abutting portion 8 is not limited to this, and FIGS.
)), (C) and (d), it is also possible to provide a butt portion spanning two or three sides of the reinforcing body to facilitate bending of the conductor in multiple directions. In each of FIGS. 3A and 3B, only the reinforcing body provided around the conductor is shown, and the illustration of the conductor is omitted. 3(a) has a gap 9 meandering from one side surface X to the top bottom surface 702 of the reinforcing body 1, and it is possible to bend the side surface X or the top bottom surface Y so that it is on the inside of the bend. You can do it. Fig. 3 (+) shows a reinforcing body J having a gap 9 meandering from one side X to the upper bottom surface Y and the lower bottom surface Z. You can bend Z so that it is on the inside of the bend. FIG. 3(C) shows a reinforcement body 1 having a meandering gap 9 across three sides, X, Y, and W. It can also be bent so that it comes inside the bend. Figure 3 (
d) has a meandering gap 9 spanning the side surface X and the top surface Y of the reinforcing body 1, as in FIG. This is different from Figure 3(a).
本発明において、緊線集合型化合物超電導導体に設ける
補強体は、第２図の如く導体６の囲りに設けられる場合
のほか、これとは逆に補強体の囲りに導体を撚り合せた
場合もあり、さらにこの両方つまり導体の内部と外周の
両方に設ける場合もある。In the present invention, the reinforcing body provided in the wire assembly type compound superconducting conductor is not only provided around the conductor 6 as shown in FIG. In some cases, the conductor is provided in both directions, that is, in both the inside and the outer periphery of the conductor.
また本発明では、第２図に示す如（、補強体１の外周面
にＡｌ２Ｏ２、ＭｇＯなどの無機物質皮膜１０を設ける
ことにより、コイルにした場合の隣接ターン間の電気絶
縁にすることが好ましい。かかる皮膜１０は補強体Ｊの
外周面に限らず、内周面に設けることにより導体６と補
強体１とを電気絶縁することで上記目的を達することが
できる。勿論補強体の内外両局面に設けてもよい。In addition, in the present invention, as shown in FIG. The above purpose can be achieved by providing the film 10 not only on the outer circumferential surface of the reinforcing body J but also on the inner circumferential surface to electrically insulate the conductor 6 and the reinforcing body 1. Of course, it is possible to achieve the above objective by providing electrical insulation between the conductor 6 and the reinforcing body 1. may be provided.
また、この皮膜１０はｗｉｎｄ ａｎｄ ｒｅａｃｔ法
でコイルを造る場合には隣接ターン間の焼結防止のセパ
レータとしても機能する。Further, this film 10 also functions as a separator to prevent sintering between adjacent turns when a coil is manufactured by the wind and react method.
補強体を構成する材質は、非磁性のものが用いられ、例
えばステンレス鋼、銅合金、アルミ合金などかちり、そ
の単体又は複合体が用いられる。The material constituting the reinforcing body is non-magnetic, such as stainless steel, copper alloy, aluminum alloy, etc., singly or in combination.
また本発明で用いる素線集合型化合物超電導導体として
は、何ら特定されるものではな（、従来から用いられて
いる、多芯化合物超電導素線の複数本からなる撚線、編
組線、転位線またはこれらの圧縮成形線、さらにかがる
撚線、編組線５転位線及び圧縮成形線の芯に線又は条状
の補強体を有するもの、さらにこのほかこれらの線を１
次素線として上記と同様に撚線、編組線、転位線、圧縮
成形線などとしたもののいずれでもよい。Furthermore, the strand-aggregated compound superconducting conductor used in the present invention is not specified in any way. Or, these compression-molded wires, twisted twisted wires, braided wires, five-dislocation wires, compression-molded wires with a wire or strip-shaped reinforcement in the core, and in addition, these wires.
The secondary strands may be any of stranded wires, braided wires, dislocation wires, compression molded wires, etc. as described above.
第２図及び第３図では導体及び補強体の断面形状が上底
面と下底面との幅が異なる、所謂キーストーン型のもの
を示したが、本発明ではこれに限らず、種々の断面形状
のものであってよい。Although FIGS. 2 and 3 show a so-called keystone type cross-sectional shape in which the conductor and reinforcing body have different widths between the upper and lower surfaces, the present invention is not limited to this, and various cross-sectional shapes can be used. It may be of.
次に本発明の実施例を示す。Next, examples of the present invention will be shown.
実施例
（内部補強体）
゛厚さ０．２ ｍｍのステンレステープの両縁に波長３
ｍｍの波形部を有するものをフォーミングして第４図
に示す如（厚さ０．４ ｗ＋１、幅１４＋ｎ＋ｎ、隣接
波形部７間に形成された間隙９０間隔約１２μｍの補強
体を得、その表面にアルミナコーティング１０を形成し
て内部補強体１を得た。Example (internal reinforcement) ゛Wavelength 3 on both edges of 0.2 mm thick stainless steel tape
A reinforcing body having a corrugated part of 1 mm in diameter was formed as shown in Fig. 4 (thickness: 0.4 w + 1, width: 14 + n + n, gaps 90 formed between adjacent corrugated parts 7, about 12 μm apart), and its surface was An alumina coating 10 was formed on the inner reinforcing body 1 to obtain an internal reinforcing body 1.
（外側補強体用テープ）
厚さ０．２闘、最大幅（両縁の波の山間の長さ）４６Ｗ
ＩＴＡ、両縁に波長５朋の波形部を有するステンレステ
ープを外側補強体用に用意した。(Tape for outside reinforcing body) Thickness 0.2 mm, maximum width (length between wave peaks on both edges) 46 W
A stainless steel tape having waveforms with a wavelength of 5 mm on both edges was prepared for the outer reinforcing body.
（２次素線）
Ｃｕ−８ｎブロンズマトリツクスロンド中に５０５本の
Ｎｂコアを埋込み、その外側に拡散障壁層としてＴａ管
を被覆し、さらにその外側に安定化銅として高純度鋼管
を被覆したものに減面加工を施して安定化銅の占積率５
０％の外径０．３７ ｍｔｎの素線を得た。次にこの素
線７本を撚線し、外径１．１間の２次素線を得た。(Secondary strand) 505 Nb cores were embedded in a Cu-8n bronze matrix rond, and a Ta tube was coated on the outside as a diffusion barrier layer, and a high-purity steel tube was further coated on the outside as a stabilizing copper. The space factor of copper stabilized by reducing the area of the object is 5.
A wire with an outer diameter of 0.37 mtn was obtained. Next, these seven strands were twisted to obtain a secondary strand with an outer diameter of 1.1 mm.
（化合物超電導導体とコイルの製造）
次に、上記内部補強体の周囲に、上記２次素線３０本を
撚り合せ、さらにロールで圧縮成形し、外寸法（断面で
上底２．０藺、下底２．５ ｍｍ、両底間の高さ１６．
５ｍ＋１１）のキーストン型成形撚線を得た。次に、こ
の成形撚線の外側に上記外側補強体用テープをフォーミ
ングし、外寸法（断面で上底２，４闘、下底２．９朋、
両底間の高さ］ ’６．９ｍｍ ）及び突合せ部に形成
された蛇行間隙の間隔約１２．５μｍの補強体付複合線
を得、その外表面にアルミナコーティングを施した。(Manufacture of compound superconducting conductor and coil) Next, the 30 secondary strands were twisted around the internal reinforcing body, and compression molded using rolls. Lower base 2.5 mm, height between both bases 16.
A keystone molded strand of 5m+11) was obtained. Next, the above-mentioned outer reinforcing body tape is formed on the outside of this formed stranded wire, and the external dimensions (upper bottom 2.4mm, lower bottom 2.9mm in cross section,
A composite wire with a reinforcing body having a height of 6.9 mm) and a meandering gap formed at the abutting portion of about 12.5 μm was obtained, and the outer surface of the composite wire was coated with alumina.
次にこの複合線を最小曲げ半径２５ｍｍの鞍型枠に巻線
、固定後６５０″Ｃで１０日間拡散熱処理を行い、各素
線内のブロンズマトリックスとニオブ芯との界面にＮｂ
３Ｓｎ化合物層を形成させた。しかる後、鞍型コイルの
外部より金属製カラーでコイルを固定した。Next, this composite wire was wound around a saddle frame with a minimum bending radius of 25 mm, and after fixing, diffusion heat treatment was performed at 650"C for 10 days, and Nb was added to the interface between the bronze matrix and the niobium core in each strand.
A 3Sn compound layer was formed. Thereafter, the saddle-shaped coil was fixed with a metal collar from the outside.
次にこのコイルを液体ヘリウム（４，２’Ｋ）中で通電
実験を行った結果、磁界１０テスラーで１５５０ＯＡの
電流値が測定された。尚この値は、外径Ｑ、 ３７ ｍ
の上記素線単独について上記と同様の拡散熱処理を行っ
て得たＮ ｂ ３Ｓ ｎ化合物超電導素線単独の臨界電
流値７３Ａ（ａｔｌｏテスラー）から算出した値（１５
３３０Ａ ）と良好な一致であることが確認された。Next, as a result of carrying out an experiment of energizing this coil in liquid helium (4.2'K), a current value of 1550 OA was measured with a magnetic field of 10 Tesla. This value is the outer diameter Q, 37 m
The value (15
It was confirmed that there was good agreement with 330A).
以上の測定結果、本発明による化合物超電導導体は金属
製カラーなどによる局部的な締伺けや電磁力による応力
・歪に対しても十分耐えつる構造であることが判った。As a result of the above measurements, it was found that the compound superconducting conductor according to the present invention has a structure that can sufficiently withstand stress and strain caused by local interference caused by metal collars, etc., and electromagnetic force.
また、本発明の導体で作られた上記超電導マグネットコ
イルの冷却特性を知るために次の試験を行った。Further, the following test was conducted to find out the cooling characteristics of the superconducting magnet coil made of the conductor of the present invention.
上記コイルにエポキシ樹脂を含浸し、全素線間、素線と
補強体との間などのすべての間隙を充填密封したコイル
について、上記と全く同様な条件（液体ヘリウム４．２
ＯＫ中、磁界１０テスラー）下で通電試験を行ったとこ
ろ、７２００Ａの電流値が測定された。このことから本
発明の化合物超電導導体の冷却特性が著しく優れている
ことが判明した。The above coil was impregnated with epoxy resin, filling and sealing all the gaps between all the strands and between the strands and the reinforcing body under exactly the same conditions as above (liquid helium 4.2
When an electric current test was conducted under a magnetic field of 10 Tesla during OK, a current value of 7200 A was measured. This indicates that the compound superconducting conductor of the present invention has extremely excellent cooling properties.
次に、上記試験後に樹脂含浸コイルを切断し観察したと
ころ、導体は内外両補強体のいずれとも、最小曲げ半径
近傍においても良好に密着しており、かつ湾曲による両
補強体の局部的なシワや***は見られなかった。したが
ってコイル巻時等に湾曲を与えても補強体は良好に曲げ
られていることが判り、巻線性のすぐれていることが判
った。尚上記実施例では超電導コイルをｗｉｎｄ ａｎ
ｄ ｒｅａｃｔ法によって造ったが、本発明はこれに限
らず、ｒｅａｃｔ ａｎｄ ｗｉｎｄ法によっても造る
ことができる。Next, after the above test, the resin-impregnated coil was cut and observed, and it was found that the conductor was in good contact with both the inner and outer reinforcing bodies, even near the minimum bending radius, and there were local wrinkles on both reinforcing bodies due to curvature. No bumps were observed. Therefore, it was found that even if the reinforcing body was bent during coil winding, the reinforcing body was bent well, and it was found that the winding property was excellent. In the above embodiment, the superconducting coil is
Although it was manufactured using the react method, the present invention is not limited to this, and it can also be manufactured using the react and wind method.
以上説明した如く、本発明による化合物超電導導体は、
化合物超電導導体の機械的補強を簡単な補強体で容易に
行えるのみならず、可撓性、巻線性および冷却特性を著
しく改善し、さらに簡単な補強体であるため必要最小限
の厚さの補強体を用いることができるので導体の電流密
度がそれだけ向上し、さらにその上に、短尺導体で測定
して得られた所謂短尺電流特性と同じ特性がコイルにし
た場合にも確実に保持されているので、コイル全体とし
ての電流密度を大幅に改善できるなど極めて優れた利点
を有するものである。As explained above, the compound superconducting conductor according to the present invention is
Not only can mechanical reinforcement of compound superconducting conductors be easily performed using a simple reinforcing body, but also the flexibility, windability and cooling properties are significantly improved, and furthermore, the simple reinforcing body allows for reinforcement with the minimum required thickness. Since the current density of the conductor can be improved accordingly, the same characteristics as the so-called short current characteristics obtained by measuring with a short conductor are reliably maintained when a coil is used. Therefore, it has extremely excellent advantages such as being able to significantly improve the current density of the entire coil.
第１図（ａ）、（ｂ）、（ｄ）、（ｅ）、（ｆ）はいず
れも従来の素線集合型化合物超電導導体の断面図、第１
図（Ｃ）は従来の素線集合型化合物超電導導体の斜視図
、第２図は本発明による化合物超電導導体の補強体の種
々の例を示す斜視図、及び第４図は本発明実施例で用い
た内部補強体を示す斜視図である。
１：補強体、２：超電導素線、３：２次素線、４：溝、
５：冷却孔、６：化合物超電導導体、７：波形部、８：
突合せ部、９：間隙、１０：無機物質皮膜、２α：化合
物超電導フィラメント、Ｘ：側面、Ｙ：上底面、２：下
底面。Figures 1 (a), (b), (d), (e), and (f) are all cross-sectional views of conventional wire assembly type compound superconducting conductors;
Figure (C) is a perspective view of a conventional wire assembly type compound superconducting conductor, FIG. It is a perspective view showing the internal reinforcement body used. 1: Reinforcement body, 2: Superconducting strand, 3: Secondary strand, 4: Groove,
5: Cooling hole, 6: Compound superconductor, 7: Corrugated part, 8:
Butt part, 9: gap, 10: inorganic material film, 2α: compound superconducting filament, X: side surface, Y: upper bottom surface, 2: lower bottom surface.
Claims (4)
合物超電導集合体の外周及び内部の少な（ともいずれか
一方に補強体を有する化合物超電導導体において、該補
強体に蛇行した間隙を該導体の長手方向に沿って設けた
ことを特徴とする化合物超電導導体。(1) In a compound superconducting conductor that has a reinforcing body on either the outer periphery or the inside of a compound superconducting assembly formed by aggregating a plurality of compound superconducting strands, a meandering gap in the reinforcing body is connected to the conductor. A compound superconducting conductor characterized in that it is provided along the longitudinal direction of the compound superconducting conductor.
げの内側に位置するように設けられていることを特徴と
する特許請求の範囲第１項記載の化合物超電導導体。(2) The compound superconducting conductor according to claim 1, wherein the gap is provided so as to be located inside the bend of the winding of the compound superconducting conductor.
膜を有することを特徴とする特許請求の範囲第１項記載
の化合物超電導導体。(3) The compound superconducting conductor according to claim 1, characterized in that the reinforcing body has an inorganic material coating on at least one side thereof.
する特許請求の範囲第１項記載の化合物超電導導体。(4) The compound superconducting conductor according to claim 1, wherein the reinforcing body is made of a non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58032463A JPS59158014A (en) | 1983-02-28 | 1983-02-28 | Compound superconductive conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58032463A JPS59158014A (en) | 1983-02-28 | 1983-02-28 | Compound superconductive conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59158014A true JPS59158014A (en) | 1984-09-07 |
| JPH0326485B2 JPH0326485B2 (en) | 1991-04-11 |
Family
ID=12359659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58032463A Granted JPS59158014A (en) | 1983-02-28 | 1983-02-28 | Compound superconductive conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59158014A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313207A (en) * | 1986-07-03 | 1988-01-20 | 株式会社東芝 | Superconductive strand |
-
1983
- 1983-02-28 JP JP58032463A patent/JPS59158014A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313207A (en) * | 1986-07-03 | 1988-01-20 | 株式会社東芝 | Superconductive strand |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0326485B2 (en) | 1991-04-11 |
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