JPH04319280A - Connecting method of superconductor wire - Google Patents
Connecting method of superconductor wireInfo
- Publication number
- JPH04319280A JPH04319280A JP3084949A JP8494991A JPH04319280A JP H04319280 A JPH04319280 A JP H04319280A JP 3084949 A JP3084949 A JP 3084949A JP 8494991 A JP8494991 A JP 8494991A JP H04319280 A JPH04319280 A JP H04319280A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- superconducting
- reinforcing member
- filaments
- wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、超電導線の接続方法
、例えば超電導マグネット等に用いられる超電導線の接
続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 method for connecting superconducting wires, such as a method for connecting superconducting wires used in superconducting magnets and the like.
【０００２】0002
【従来の技術】図５は例えば特開昭５９−１７７８７８
号公報に示された従来の超電導線の接続方法を工程順（
ａ）〜（ｆ）に示す構成図である。図において、１は第
１超電導線であり、銅材からなる第１安定化材２に第１
超電導フィラメント３が多数本埋め込まれている。４は
第１超電導線１に接続される第２超電導線であり、この
第２超電導線４は、第１超電導線１と同様に、銅材から
なる第２安定化材５に第２超電導フィラメント６が多数
本埋め込まれている。また、７は銅製のスリーブ、８は
フィラメント６の外周を覆うインジウム、９はインジウ
ム８の外周に巻き付けられたアルミニウム等からなる補
助部材である。[Prior Art] FIG. 5 shows, for example, Japanese Patent Application Laid-Open No. 59-177878
The conventional superconducting wire connection method shown in the publication is explained in the order of steps (
It is a block diagram shown in a)-(f). In the figure, 1 is a first superconducting wire, and a first stabilizing material 2 made of copper material is
A large number of superconducting filaments 3 are embedded. 4 is a second superconducting wire connected to the first superconducting wire 1, and like the first superconducting wire 1, this second superconducting wire 4 includes a second stabilizing material 5 made of copper material and a second superconducting filament. Many numbers 6 are embedded. Further, 7 is a sleeve made of copper, 8 is indium that covers the outer periphery of the filament 6, and 9 is an auxiliary member made of aluminum or the like wound around the outer periphery of the indium 8.
【０００３】次に、第１及び第２超電導線１，４の従来
の接続方法について説明する。まず、第１及び第２超電
導線１，４のそれぞれ接続予定部である端部《図５（ａ
）》から、第１及び第２安定化材２，５を、薬品等によ
って除去して、第１及び第２超電導フィラメント３，６
を露出させるとともに、第２超電導線４をスリーブ７に
通しておく《図５（ｂ）》。次に、第１及び第２超電導
フィラメント３，６を互いに絡み付けるように交差させ
る《図５（ｃ）》。そして、この交差させた部分の外周
を、インジウム８で被い、さらにこの部分に補助部材を
設ける《図５（ｄ）》。この後、第１及び第２超電導線
１，４の接続部外周にスリーブ７を被せ《図５（ｅ）》
、このスリーブ７を圧縮変形させることにより、接続部
を機械的に一体とする《図５（ｆ）》。この後、接続部
を加熱してインジウム８を溶融凝固させ、フィラメント
３，６を固定して接続を完了する。Next, a conventional method for connecting the first and second superconducting wires 1 and 4 will be explained. First, the ends of the first and second superconducting wires 1 and 4, which are the planned connection parts [Fig.
)>, the first and second stabilizing materials 2 and 5 are removed using chemicals or the like to form the first and second superconducting filaments 3 and 6.
At the same time, the second superconducting wire 4 is passed through the sleeve 7 (FIG. 5(b)). Next, the first and second superconducting filaments 3 and 6 are crossed so as to be entwined with each other (FIG. 5(c)). Then, the outer periphery of this crossed portion is covered with indium 8, and an auxiliary member is further provided in this portion (FIG. 5(d)). After this, a sleeve 7 is placed over the outer periphery of the connecting portion of the first and second superconducting wires 1 and 4 [Fig. 5(e)]
By compressively deforming this sleeve 7, the connecting portion is mechanically integrated (FIG. 5(f)). Thereafter, the connection portion is heated to melt and solidify the indium 8, fixing the filaments 3 and 6 and completing the connection.
【０００４】0004
【発明が解決しようとする課題】上記のような従来の超
電導線の接続方法においては、圧着のための圧力を上げ
ると、スリーブ７が変形してフィラメント３，６が断線
してしまうため、十分な圧着力を加えられず、従ってフ
ィラメント３，６間の接合が十分でなく、接続部の臨界
電流が低くなってしまうという問題点があった。[Problems to be Solved by the Invention] In the conventional method of connecting superconducting wires as described above, when the pressure for crimping is increased, the sleeve 7 deforms and the filaments 3 and 6 break. Therefore, there was a problem in that the bonding between the filaments 3 and 6 was not sufficient, and the critical current at the connection portion was low.
【０００５】この発明は、上記のような問題点を解決す
ることを課題としてなされたものであり、十分な圧力で
加圧することができ、これによりフィラメント間を十分
に接合させることができ、接続部の臨界電流を高くする
ことができる超電導線の接続方法を得ることを目的とす
る。[0005] This invention was made to solve the above-mentioned problems, and it is possible to pressurize with sufficient pressure, thereby making it possible to sufficiently bond the filaments, and to form a connection. The purpose of the present invention is to obtain a method for connecting superconducting wires that can increase the critical current of the superconducting wire.
【０００６】[0006]
【課題を解決するための手段】この発明に係る超電導線
の接続方法は、スリーブと、スリーブ外周に設けられス
リーブよりも機械的強度の高いスリーブ補強部材とを超
電導フィラメントの重ね合わせた部分にかぶせ、この後
スリーブ補強部材を加圧するものである。[Means for Solving the Problems] A method for connecting superconducting wires according to the present invention involves covering overlapping portions of superconducting filaments with a sleeve and a sleeve reinforcing member provided on the outer periphery of the sleeve and having higher mechanical strength than the sleeve. After this, the sleeve reinforcing member is pressurized.
【０００７】[0007]
【作用】この発明においては、スリーブ補強部材を介し
てスリーブを加圧することにより、スリーブの伸び変形
を防止し、高い圧力での加圧を可能とする。[Operation] In this invention, by pressurizing the sleeve through the sleeve reinforcing member, stretching and deformation of the sleeve is prevented and pressurization at high pressure is possible.
【０００８】[0008]
【実施例】以下、この発明の実施例を図について説明す
る。図１はこの発明の第１実施例による超電導線の接続
方法を工程順（ａ）〜（ｆ）に示す構成図であり、図５
と同一又は相当部分には同一符号を付し、その説明を省
略する。図において、１０は銅製のスリーブ７の外周に
設けられているステンレス鋼製の筒状のスリーブ補強部
材である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a method for connecting superconducting wires according to a first embodiment of the present invention in order of steps (a) to (f), and FIG.
The same or equivalent parts are given the same reference numerals and their explanations will be omitted. In the figure, reference numeral 10 denotes a cylindrical sleeve reinforcing member made of stainless steel and provided around the outer periphery of the sleeve 7 made of copper.
【０００９】この実施例の第１及び第２超電導線１，４
の接続方法は、従来とほぼ同様であるが、スリーブ７が
スリーブ補強部材１０により補強されているので、圧着
治具によりプレスする際のスリーブ７の伸び変形が防止
される。即ち、プレス時のスリーブ７の伸び変形は、同
じ圧力であれば従来よりも小さくなる。言い換えれば、
従来と同じ伸び変形量を許容するならば、この実施例の
場合、従来よりも高い圧力でプレスを行うことができ、
従って各超電導フィラメント３，６を十分に圧着・接合
することができ、接続部の臨界電流が高くなる。The first and second superconducting wires 1 and 4 of this embodiment
The connection method is almost the same as the conventional one, but since the sleeve 7 is reinforced by the sleeve reinforcing member 10, the sleeve 7 is prevented from being stretched and deformed when being pressed with a crimping jig. That is, the elongation deformation of the sleeve 7 during pressing is smaller than that of the conventional case under the same pressure. In other words,
If the same amount of elongation deformation as before is allowed, in the case of this example, pressing can be performed at a higher pressure than before,
Therefore, each of the superconducting filaments 3 and 6 can be sufficiently crimped and bonded, and the critical current at the connection portion becomes high.
【００１０】なお、上記実施例では超電導線１，４をス
リーブ７の両側から引き出すようにして接続した場合を
示したが、例えば図２に示すように、両者をスリーブ７
の片側から引き出すようにして接続してもよい。また、
上記実施例ではスリーブ補強部材１０として単なる円筒
状のものを示したが、スリーブ７とスリーブ補強部材１
０との間の滑りによるスリーブ７の変形を防止するため
に、例えば図３及び図４に示すように、突起状の変形防
止部１０ａをスリーブ補強部材１０に設けてもよい。図
３の場合、スリーブ７の軸方向端部に変形防止部１０ａ
が係合してスリーブ７の変形を防止し、図４の場合、ス
リーブ補強部材１０の軸方向端部が先にプレスされるの
で、スリーブ７の軸方向への伸びが抑えられる。さらに
、スリーブ補強部材１０の材料はステンレス鋼に限定さ
れるものではなく、銅製のスリーブよりも機械的強度の
高いものであれば、例えば銅クロム合金などであっても
よい。さらにまた、インジウム８及び補助部材９は省略
してもよい。
また、上記実施例のフィラメント３，６はＮｂＴｉフィ
ラメントであるが、フィラメントの材料はこれに限定さ
れるものではない。さらに、この発明は超電導マグネッ
トに用いられる超電導線以外の超電導線の接続にも適用
できる。In the above embodiment, the superconducting wires 1 and 4 are connected by pulling them out from both sides of the sleeve 7, but as shown in FIG.
You can also connect it by pulling it out from one side of the board. Also,
In the above embodiment, a simple cylindrical member was shown as the sleeve reinforcing member 10, but the sleeve 7 and the sleeve reinforcing member 1
In order to prevent the deformation of the sleeve 7 due to slippage between the sleeve reinforcing member 10 and the sleeve reinforcing member 10, a protruding deformation preventing portion 10a may be provided on the sleeve reinforcing member 10, as shown in FIGS. 3 and 4, for example. In the case of FIG. 3, a deformation prevention portion 10a is provided at the axial end of the sleeve 7.
are engaged to prevent deformation of the sleeve 7, and in the case of FIG. 4, the axial end of the sleeve reinforcing member 10 is pressed first, so that the sleeve 7 is prevented from elongating in the axial direction. Furthermore, the material of the sleeve reinforcing member 10 is not limited to stainless steel, and may be made of, for example, a copper chromium alloy, as long as it has higher mechanical strength than a copper sleeve. Furthermore, the indium 8 and the auxiliary member 9 may be omitted. Further, although the filaments 3 and 6 in the above embodiment are NbTi filaments, the material of the filaments is not limited to this. Furthermore, the present invention can be applied to the connection of superconducting wires other than those used in superconducting magnets.
【００１１】[0011]
【発明の効果】以上説明したように、この発明の超電導
線の接続方法は、スリーブよりも機械的強度の高いスリ
ーブ補強部材を介してスリーブを加圧するようにしたの
で、加圧によるスリーブの伸び変形は防止され、従って
十分な圧力で加圧を行うことができ、これによりフィラ
メント間を十分に接合することができ、接続部の臨界電
流を高くすることができるという効果を奏する。Effects of the Invention As explained above, in the superconducting wire connection method of the present invention, the sleeve is pressurized through the sleeve reinforcing member, which has higher mechanical strength than the sleeve, so that the sleeve does not expand due to the pressurization. Deformation is prevented, and therefore sufficient pressure can be applied, which results in the effect that the filaments can be sufficiently bonded and the critical current of the connection portion can be increased.
【図１】この発明の第１実施例による超電導線の接続方
法を工程順に示す構成図である。FIG. 1 is a configuration diagram illustrating a method for connecting superconducting wires according to a first embodiment of the present invention in order of steps.
【図２】この発明の第２実施例による超電導線の接続途
中の状態を一部断面で示す構成図である。FIG. 2 is a partially cross-sectional configuration diagram showing a state in which superconducting wires are being connected according to a second embodiment of the present invention.
【図３】この発明の第３実施例によるスリーブ補強部材
を示す断面図である。FIG. 3 is a sectional view showing a sleeve reinforcing member according to a third embodiment of the invention.
【図４】この発明の第４実施例によるスリーブ補強部材
を示す断面図である。FIG. 4 is a sectional view showing a sleeve reinforcing member according to a fourth embodiment of the invention.
【図５】従来の超電導線の接続方法を工程順に示す構成
図である。FIG. 5 is a configuration diagram showing a conventional method for connecting superconducting wires in order of steps.
１ 第１超電導線 ３ 第１超電導フィラメント ４ 第２超電導線 ６ 第２超電導フィラメント ７ スリーブ １０ スリーブ補強部材 1 First superconducting wire 3 First superconducting filament 4 Second superconducting wire 6 Second superconducting filament 7 Sleeve 10 Sleeve reinforcement member
Claims (1)
メントを露出させ、次に露出した複数の超電導フィラメ
ントを互いに重ね合わせ、この後スリーブと、このスリ
ーブの外周に設けられスリーブよりも機械的強度の高い
スリーブ補強部材とを、前記超電導フィラメントの重ね
合わせ部分にかぶせ、この状態で前記スリーブ補強部材
を介して前記スリーブを加圧することにより、前記超電
導フィラメント相互を圧着することを特徴とする超電導
線の接続方法。Claim 1: A superconducting filament is exposed at the part where the superconducting wire is to be connected, and then a plurality of exposed superconducting filaments are stacked on top of each other, and then a sleeve and a wire having a mechanical strength higher than that of the sleeve provided on the outer periphery of the sleeve are attached. The superconducting wire is characterized in that the superconducting filaments are crimped together by placing a high sleeve reinforcing member over the overlapping portion of the superconducting filaments and pressurizing the sleeve through the sleeve reinforcing member in this state. Connection method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3084949A JP2909245B2 (en) | 1991-04-17 | 1991-04-17 | Superconducting wire connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3084949A JP2909245B2 (en) | 1991-04-17 | 1991-04-17 | Superconducting wire connection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04319280A true JPH04319280A (en) | 1992-11-10 |
| JP2909245B2 JP2909245B2 (en) | 1999-06-23 |
Family
ID=13844892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3084949A Expired - Fee Related JP2909245B2 (en) | 1991-04-17 | 1991-04-17 | Superconducting wire connection method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2909245B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100394229B1 (en) * | 2001-09-19 | 2003-08-09 | 한국전기연구원 | Superconductive joint device and method between the multi-filament super-conductors and fixing apparatus therefor |
| US8385994B2 (en) | 2010-07-23 | 2013-02-26 | Hitachi, Ltd. | Superconducting joint and method for manufacturing same |
| US8513527B2 (en) | 2009-07-29 | 2013-08-20 | Hitachi, Ltd. | Superconducting circuit, production method of superconducting joints, superconducting magnet, and production method of superconducting magnet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025196377A1 (en) * | 2024-03-20 | 2025-09-25 | Nexans | Method for forming an electrical connection on a superconducting cable |
| KR102896610B1 (en) * | 2024-10-16 | 2025-12-04 | 한국핵융합에너지연구원 | LTS join method by HTS coating and LTS join structure by HTS coating |
-
1991
- 1991-04-17 JP JP3084949A patent/JP2909245B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100394229B1 (en) * | 2001-09-19 | 2003-08-09 | 한국전기연구원 | Superconductive joint device and method between the multi-filament super-conductors and fixing apparatus therefor |
| US8513527B2 (en) | 2009-07-29 | 2013-08-20 | Hitachi, Ltd. | Superconducting circuit, production method of superconducting joints, superconducting magnet, and production method of superconducting magnet |
| US8385994B2 (en) | 2010-07-23 | 2013-02-26 | Hitachi, Ltd. | Superconducting joint and method for manufacturing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2909245B2 (en) | 1999-06-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |