JP2011238510A - Method and structure for connecting superconducting wire rod - Google Patents

Method and structure for connecting superconducting wire rod Download PDF

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JP2011238510A
JP2011238510A JP2010110036A JP2010110036A JP2011238510A JP 2011238510 A JP2011238510 A JP 2011238510A JP 2010110036 A JP2010110036 A JP 2010110036A JP 2010110036 A JP2010110036 A JP 2010110036A JP 2011238510 A JP2011238510 A JP 2011238510A
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superconducting wire
superconducting
wire rod
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Goro Osabe
吾郎 長部
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Sumitomo Electric Industries Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a method and a structure for connecting wire rod wherein the safety of work can be sufficiently secured when the connected wire rod is wound around a former or the like while maintaining flexibility of a connection, and a superconducting apparatus with stable performance can be provided without breaking insulation paper or the like even when the wire rod is deviated during wiring work.SOLUTION: In the method for connecting the superconducting wire rod, both terminal parts of two tape-shaped superconducting wire rods are overlapped via a solder layer and connected to each other. Furthermore, in the method for connecting the superconducting wire rod, at least one side edge of the superconductive wire rods is inclined to the center line side of the superconducting wire rod, a terminal part is formed by connecting both side edges by an arc-like curve and the both terminal parts of the superconducting wire rods are overlapped with each other to connect the superconducting wire rods. The connection structure of the superconducting wire rods connected by this connection method is provided.

Description

本発明は、超電導線材の接続方法および接続構造に関し、詳しくは、２本のテープ状超電導線材の端末部を重ね合わせて半田を用いてつなぎ合わせること（スプライス）により、超電導線材の長尺化を図る超電導線材の接続方法および接続構造に関する。   The present invention relates to a superconducting wire connecting method and connecting structure, and more specifically, by superposing the ends of two tape-shaped superconducting wires and joining them together using solder (splice), the length of the superconducting wire is increased. The present invention relates to a superconducting wire connecting method and a connecting structure.

超電導機器用の超電導ケーブルや超電導コイル等を作製するに際しては、長尺の超電導線材が必要とされ、一般に、複数の超電導線材を順次接続していくことにより、長尺化が図られている。このように、複数の超電導線材を順次接続していくことにより、短尺の、また長さの異なる超電導線材であっても、有効に利用できるため、超電導線材の歩留まりを実質１００％にすることが可能となり、大幅なコスト削減を図ることができる。   When producing a superconducting cable for a superconducting device, a superconducting coil, or the like, a long superconducting wire is required. In general, a plurality of superconducting wires are sequentially connected to achieve a long length. Thus, by sequentially connecting a plurality of superconducting wires, even a superconducting wire having a short length and a different length can be used effectively, so that the yield of the superconducting wire can be substantially 100%. It becomes possible, and a significant cost reduction can be achieved.

複数の超電導線材を順次接続していく方法としては、種々の提案がなされているが、現状、端末部を重ね合わせて半田により接続するオーバーラップ型と呼ばれる方法が主流となっている（例えば、特許文献１）。   As a method of sequentially connecting a plurality of superconducting wires, various proposals have been made, but at present, a method called an overlap type in which terminal portions are overlapped and connected by solder has become mainstream (for example, Patent Document 1).

しかし、従来のオーバーラップ型では、単に、超電導線材の端末部をオーバーラップさせただけで、半田付けを行っていたため、オーバーラップ部分の面積が大きくなり、それに伴い、必要な半田の量も増大して、接続部分が固くなるという問題があった。このようなスプライス線材をケーブルなどのフォーマに巻回した場合、固くしなやかさに欠ける接続部分がフォーマから浮き上がってしまい、超電導特性に悪影響を及ぼす。   However, in the conventional overlap type, soldering is performed simply by overlapping the end portion of the superconducting wire, so the area of the overlap portion increases, and the amount of necessary solder increases accordingly. Then, there was a problem that the connection part became hard. When such a splice wire is wound around a former such as a cable, a connection portion that is hard and not flexible is lifted from the former, which adversely affects the superconducting characteristics.

このような問題に対し、オーバーラップ部分の面積を減少させると共に、半田の使用量を低減させて、しなやかさを発揮させるために、例えば、図４に示すように、端末部の形状を、先端に行くに従い細くなる三角形にすることが提案されている。   In order to reduce the area of the overlap portion and to reduce the amount of solder used and to exhibit flexibility, for example, as shown in FIG. It has been proposed to make the triangle thinner as it goes.

特開平４−１６０７７１号公報Japanese Patent Laid-Open No. 4-160771

しかしながら、このような三角形状の端末部を設けることにより、半田の使用量が低減され、しなやかさが発揮されたにも拘わらず、別の問題が新たに発生した。即ち、この三角形は、先端に行くに従い細く鋭利になっているため、接続された長尺線材をフォーマなどに巻回する際に、作業者の手に突き刺さる恐れがあり、作業の安全を確保することが困難となる。また、巻回作業中に線材がずれたりした場合には、絶縁紙などが破れる恐れがあり、安定した性能の超電導機器を提供することが困難となる。   However, by providing such a triangular terminal portion, the amount of solder used is reduced, and yet another problem arises despite the fact that flexibility is exhibited. That is, since this triangle is thin and sharp as it goes to the tip, there is a risk of piercing the operator's hand when winding the connected long wire around a former or the like, ensuring work safety. It becomes difficult. In addition, when the wire is displaced during the winding operation, the insulating paper or the like may be torn, making it difficult to provide a superconducting device with stable performance.

そこで、本発明は、上記問題に鑑み、接続部のしなやかさを維持しながら、接続された線材をフォーマなどに巻回する際に、作業の安全性を十分に確保できると共に、巻回作業中に線材がずれたりした場合であっても、絶縁紙などを破ることなく、安定した性能の超電導機器を提供することができる超電導線材の接続方法および接続構造を提供することを課題とする。   Therefore, in view of the above problems, the present invention can ensure sufficient work safety when winding the connected wire around a former while maintaining the flexibility of the connecting portion, and during the winding operation. It is an object of the present invention to provide a superconducting wire connecting method and a connecting structure capable of providing a superconducting device with stable performance without breaking the insulating paper or the like even when the wire is displaced.

本発明者は、鋭意研究を行った結果、以下の各請求項に示す発明により、上記の課題が解決できることを見出し、本発明を完成するに至った。以下、各請求毎に説明する。   As a result of diligent research, the present inventor has found that the above problems can be solved by the invention shown in the following claims, and has completed the present invention. Hereinafter, each bill will be described.

請求項１に記載の発明は、
２本のテープ形状の超電導線材の双方の端末部を、半田層を介してオーバーラップさせて接続する超電導線材の接続方法であって、
前記超電導線材の少なくとも一方の側縁が前記超電導線材の中心線側に傾斜し、両側縁が弧状の曲線で結ばれた端末部を形成し、
双方の前記超電導線材の端末部をオーバーラップさせて接続する
ことを特徴とする超電導線材の接続方法である。 The invention described in claim 1
A superconducting wire connecting method in which both end portions of two tape-shaped superconducting wires are overlapped and connected via a solder layer,
At least one side edge of the superconducting wire is inclined toward the center line side of the superconducting wire, and both end edges are connected by an arcuate curve to form a terminal portion,
It is the connection method of the superconducting wire characterized by overlapping and connecting the terminal part of both said superconducting wires.

本請求項の発明においては、超電導線材の端末部が、先端に行くに従い細くなる形状に形成しているため、端末部が重なり合った接続部分において、曲げ特性が改善され、十分なしなやかさを発揮させることができる。   In the invention of this claim, since the terminal portion of the superconducting wire is formed in a shape that becomes narrower as it goes to the tip, the bending characteristic is improved at the connecting portion where the terminal portion overlaps, and sufficient flexibility is exhibited. Can be made.

そして、端末部の先端が、弧状の曲線で結ばれて形成されているため、接続された線材をフォーマなどに巻回する際に、作業者の手に突き刺さる恐れがなく、作業の安全性を十分に確保することができる。また、巻回作業中に線材がずれたりした場合であっても、絶縁紙などが破られることがないため、安定した性能の超電導機器を提供することができる。   And since the tip of the terminal part is connected by an arcuate curve, there is no risk of piercing the operator's hand when winding the connected wire around a former, etc. It can be secured sufficiently. Further, even when the wire is displaced during the winding operation, the insulating paper or the like is not torn, so that a superconducting device with stable performance can be provided.

なお、本請求項の発明において、「弧状の曲線」とは、真円の円弧に限定されず、楕円の円弧や放物線の弧なども含まれる。   In the present invention, the “arc-shaped curve” is not limited to a perfect circular arc, but includes an elliptical arc, a parabolic arc, and the like.

具体的に上記した端末部を形成する場合、当初より所望の端末部の形状に形成してもよく、作業の効率化のため、予め、先端部に三角形や台形などを形成した後、弧状の曲線部を形成してもよい。   Specifically, when the above-described terminal portion is formed, it may be formed into a desired terminal portion shape from the beginning, and after forming a triangle or a trapezoid at the tip portion in advance for work efficiency, A curved portion may be formed.

請求項２に記載の発明は、
前記弧状の曲線が、各側縁との交点において、各々の側縁を接線として、各側縁と結ばれていることを特徴とする請求項１に記載の超電導線材の接続方法である。 The invention described in claim 2
The superconducting wire connecting method according to claim 1, wherein the arcuate curve is connected to each side edge with each side edge as a tangent at an intersection with each side edge.

弧状の曲線が両側縁と内接しているため、弧状の曲線と側縁との交点においても、前記した作業の安全性などを確保することができる。   Since the arc-shaped curve is inscribed with both side edges, the safety of the above-described work can be ensured even at the intersection of the arc-shaped curve and the side edges.

請求項３に記載の発明は、
請求項１または請求項２に記載の超電導線材の接続方法により接続されていることを特徴とする超電導線材の接続構造である。 The invention according to claim 3
It is the connection structure of the superconducting wire characterized by connecting by the connection method of the superconducting wire of Claim 1 or Claim 2.

本請求項の発明においては、超電導線材の接続構造が、請求項１や請求項２に記載の超電導線材の接続方法を用いて形成されているため、フォーマなどに巻回する際に、前記した作業の安全性を十分に確保することができ、また、安定した性能の超電導機器を提供することができる。   In the invention of this claim, since the connection structure of the superconducting wire is formed by using the connection method of the superconducting wire according to claim 1 or 2, the above-described structure is used when winding on a former or the like. Work safety can be sufficiently secured, and a superconducting device with stable performance can be provided.

本発明によれば、接続部のしなやかさを維持しながら、接続された線材をフォーマなどに巻回する際に、作業の安全性を十分に確保できると共に、巻回作業中に線材がずれたりした場合であっても、絶縁紙などを破ることなく、安定した性能の超電導機器を提供することができる超電導線材の接続方法および接続構造を提供することができる。   According to the present invention, when the connected wire rod is wound around a former or the like while maintaining the flexibility of the connecting portion, the work safety can be sufficiently ensured, and the wire rod can be displaced during the winding operation. Even in such a case, it is possible to provide a superconducting wire connecting method and a connecting structure that can provide a superconducting device having stable performance without breaking the insulating paper.

本発明の一実施の形態の超電導線材の接続構造を示す斜視図である。It is a perspective view which shows the connection structure of the superconducting wire of one embodiment of this invention. 本発明の一実施の形態の超電導線材の端末部を示す平面図である。It is a top view which shows the terminal part of the superconducting wire of one embodiment of this invention. 本発明の一実施の形態の超電導線材の接続構造の接続構造を示す平面図である。It is a top view which shows the connection structure of the connection structure of the superconducting wire of one embodiment of this invention. 従来の超電導線材の端末部を示す平面図である。It is a top view which shows the terminal part of the conventional superconducting wire.

以下、図面を用いて本発明を実施の形態に基づいて説明する。   Hereinafter, the present invention will be described based on embodiments with reference to the drawings.

図１は本発明の一実施の形態の超電導線材の接続構造を示す斜視図であり、図２は本発明の一実施の形態の超電導線材の端末部を示す平面図であり。図３は本発明の一実施の形態の超電導線材の接続構造を示す平面図である。   FIG. 1 is a perspective view showing a connection structure of a superconducting wire according to an embodiment of the present invention, and FIG. 2 is a plan view showing a terminal portion of the superconducting wire according to an embodiment of the present invention. FIG. 3 is a plan view showing a superconducting wire connecting structure according to an embodiment of the present invention.

図１に示すように、超電導線材の接続構造は、接続する２本のテープ形状の超電導線材Ｔの双方の端末部１を重ね合わせ、半田を用いて接続することにより構成されている。そして、この超電導線材の接続構造は、以下の超電導線材の接続方法により形成される。   As shown in FIG. 1, the superconducting wire connecting structure is configured by superimposing both terminal portions 1 of two tape-shaped superconducting wires T to be connected and connecting them using solder. And this superconducting wire connecting structure is formed by the following superconducting wire connecting method.

すなわち、本実施の形態においては、超電導線材Ｔの一方の側縁が超電導線材Ｔの中心線Ｃの側に傾斜させて傾斜した側縁１ｄ（以下、斜辺ともいう）を形成し、両側縁１ｃ、１ｄを弧状の曲線１ａで結ぶことにより、端末部１を形成する。その際、弧状の曲線１ａが、各側縁１ｃ、１ｄとの交点において、各々の側縁１ｃ、１ｄを接線として、各側縁１ｃ、１ｄと結ばれるように形成する。   That is, in the present embodiment, one side edge of the superconducting wire T is inclined to the side of the center line C of the superconducting wire T to form an inclined side edge 1d (hereinafter also referred to as a hypotenuse), and both side edges 1c. The terminal portion 1 is formed by connecting 1d with an arcuate curve 1a. At this time, the arcuate curve 1a is formed so as to be connected to the side edges 1c and 1d at the intersections with the side edges 1c and 1d with the side edges 1c and 1d as tangents.

具体的にこのような端末部を形成するに際しては、例えば、まず、先端に行くに従い幅が狭くなる台形状に、超電導線材Ｔの端部を切断する。次に、台形状の上底側を、研磨紙あるいは研磨機で孤状の曲線で丸みを持たせるようにすることにより効率的に端末部を形成することができる。   Specifically, when such a terminal portion is formed, for example, the end portion of the superconducting wire T is first cut into a trapezoidal shape whose width becomes narrower toward the tip. Next, the terminal portion can be efficiently formed by making the upper base side of the trapezoidal shape round with an isolated curve with polishing paper or a polishing machine.

この場合の好ましい台形の形状は、超電導線材の幅Ｗが４．５ｍｍ程度である場合、上底の寸法は２ｍｍ程度、また、超電導線材Ｔの中心線Ｃに対する傾斜した側縁１ｄの傾斜角度θは、２４°程度である。そして、端末部１の先端に付けられる曲線の半径を、０．５ｍｍ程度に設定することが好ましい。   A preferable trapezoidal shape in this case is that when the width W of the superconducting wire is about 4.5 mm, the dimension of the upper base is about 2 mm, and the inclination angle θ of the inclined side edge 1d with respect to the center line C of the superconducting wire T Is about 24 °. And it is preferable to set the radius of the curve attached to the front-end | tip of the terminal part 1 to about 0.5 mm.

このようにして形成した２本の超電導線材Ｔの双方の端末部１を、図３に示すように、斜辺１ｄが平行となるように、端末部１を重ね合わせ、半田を用いて接続する。   As shown in FIG. 3, the terminal portions 1 of the two superconducting wires T formed in this way are overlapped and connected using solder so that the hypotenuses 1d are parallel to each other.

なお、接続される２本の超電導線材Ｔの双方の端末部１は、同一の形状および寸法に設定される。   In addition, both the terminal parts 1 of the two superconducting wires T to be connected are set to have the same shape and dimensions.

以上のように、超電導線材Ｔの端末部の先端は弧状の曲線で丸みを持たせているため、接続された線材をフォーマなどに巻回する際に、作業者の手に突き刺さる恐れがなく、作業の安全性を十分に確保することができる。また、巻回作業中に超電導線材Ｔがずれたりした場合であっても、絶縁紙などが破られることがない。さらに、弧状の曲線１ａが両側縁１ｃ、１ｄと内接しているため、弧状の曲線１ａと側縁１ｃ、１ｄとの交点においても、作業の安全性などを確保することができる。   As described above, since the tip of the terminal portion of the superconducting wire T is rounded with an arcuate curve, there is no risk of piercing the operator's hand when winding the connected wire around a former, Sufficient work safety can be ensured. Even if the superconducting wire T is displaced during the winding operation, the insulating paper or the like is not broken. Furthermore, since the arc-shaped curve 1a is inscribed with the side edges 1c and 1d, work safety can be ensured even at the intersection of the arc-shaped curve 1a and the side edges 1c and 1d.

以上、本発明を実施の形態に基づき説明したが、本発明は上記の実施の形態に限定されるものではない。本発明と同一および均等の範囲内において、上記の実施の形態に対して種々の変更を加えることが可能である。   As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to said embodiment. Various modifications can be made to the above-described embodiment within the same and equivalent scope as the present invention.

１ 端末部
１ａ 弧状の曲線
１ｃ 側縁
１ｄ 側縁（斜辺）
θ 超電導線材の中心線に対する斜辺の角度
Ｃ 超電導線材の中心線
Ｔ 超電導線材
Ｗ 超電導線材の幅 1 terminal portion 1a arc-shaped curve 1c side edge 1d side edge (slope)
θ Angle of hypotenuse with respect to center line of superconducting wire C Center line of superconducting wire T Superconducting wire W Width of superconducting wire

Claims (3)

２本のテープ形状の超電導線材の双方の端末部を、半田層を介してオーバーラップさせて接続する超電導線材の接続方法であって、
前記超電導線材の少なくとも一方の側縁が前記超電導線材の中心線側に傾斜し、両側縁が弧状の曲線で結ばれた端末部を形成し、
双方の前記超電導線材の端末部をオーバーラップさせて接続する
ことを特徴とする超電導線材の接続方法。 A superconducting wire connecting method in which both end portions of two tape-shaped superconducting wires are overlapped and connected via a solder layer,
At least one side edge of the superconducting wire is inclined toward the center line side of the superconducting wire, and both end edges are connected by an arcuate curve to form a terminal portion,
A superconducting wire connecting method, wherein the terminal portions of both the superconducting wires are overlapped and connected. 前記弧状の曲線が、各側縁との交点において、各々の側縁を接線として、各側縁と結ばれていることを特徴とする請求項１に記載の超電導線材の接続方法。   2. The method of connecting superconducting wires according to claim 1, wherein the arcuate curve is connected to each side edge with each side edge as a tangent at an intersection with each side edge. 請求項１または請求項２に記載の超電導線材の接続方法により接続されていることを特徴とする超電導線材の接続構造。   A superconducting wire connecting structure, wherein the superconducting wire is connected by the method of connecting superconducting wires according to claim 1.
JP2010110036A 2010-05-12 2010-05-12 Method and structure for connecting superconducting wire rod Pending JP2011238510A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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EP2709224B1 (en) * 2012-09-14 2018-01-17 Nexans Assembly for electrically connecting two superconductive conductors

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
WO2013164918A1 (en) * 2012-05-02 2013-11-07 古河電気工業株式会社 Superconducting wire connection structure, superconducting wire connection method, and superconducting wire for connecting
CN103688316A (en) * 2012-05-02 2014-03-26 古河电气工业株式会社 Superconducting wire connection structure, superconducting wire connection method, and superconducting wire for connecting
JPWO2013164918A1 (en) * 2012-05-02 2015-12-24 古河電気工業株式会社 Superconducting wire connection structure, superconducting wire connection method, and superconducting wire for connection
US9502159B2 (en) 2012-05-02 2016-11-22 Furukawa Electric Co., Ltd. Superconducting wire connection structure, superconducting wire connection method, and connection superconducting wire
CN103688316B (en) * 2012-05-02 2017-08-29 古河电气工业株式会社 The connection method of the connecting structure, superconducting line of superconducting line and connection superconducting line
EP2709224B1 (en) * 2012-09-14 2018-01-17 Nexans Assembly for electrically connecting two superconductive conductors

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