JPH01673A - How to connect superconducting wires - Google Patents
How to connect superconducting wiresInfo
- Publication number
- JPH01673A JPH01673A JP62-156123A JP15612387A JPH01673A JP H01673 A JPH01673 A JP H01673A JP 15612387 A JP15612387 A JP 15612387A JP H01673 A JPH01673 A JP H01673A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- superconducting wires
- superconducting
- solder
- contact
- 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.)
- Pending
Links
- 229910000679 solder Inorganic materials 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000002887 superconductor Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- 229910020012 Nb—Ti Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- -1 NbySn Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000000669 high-field nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000657 niobium-tin Inorganic materials 0.000 description 1
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
（産業上の利用分野〕
本発明は高磁界核磁気共鳴（ＮＭＲ）分析用マグネット
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
。
〔従来の技術〕
従来超電導線の接続方法としては、第２図に示すように
超導電線１の外周と超導電線２の外周とをある区間重複
して接触させ、その間をハンダ４付する接続方法であっ
た。
〔発明が解決しようとする問題点〕
しかしながらこの接続方法では、超電導線同志の接触面
積は充分でなく、且つ最外周の銅被覆等により微小なれ
ども有限の抵抗を有し、そのため高磁界ＮＭＲ分析用マ
グネット等は定期的に再励磁して再調整することを必要
とした。
本発明の目的は微小なりといえども有限の値を有ｔ３抵
抗を完全に消滅せしめ、超電導性を保ちもって高磁界Ｎ
ＭＲ分析用マグネット等の再ｒ６ｔｔ磁。
再調整の手間をなくすことにある。(Industrial Application Field) The present invention relates to a method for connecting superconducting wires used in magnets for high-field nuclear magnetic resonance (NMR) analysis, etc. [Prior Art] Conventional methods for connecting superconducting wires include As shown in Figure 2, this was a connection method in which the outer periphery of the superconducting wire 1 and the outer periphery of the superconducting wire 2 were brought into contact overlappingly in a certain section, and solder 4 was applied between them.[Problems to be solved by the invention] ] However, with this connection method, the contact area between the superconducting wires is not sufficient, and there is a small but finite resistance due to the copper coating on the outermost periphery. Therefore, magnets for high-field NMR analysis must be periodically re-excited. The purpose of the present invention is to completely eliminate the t3 resistance, which has a finite value even if it is small, and to maintain superconductivity while maintaining high magnetic field N.
Re-r6tt magnet for MR analysis magnets, etc. The purpose is to eliminate the need for readjustment.
本発明の１実施例を図を用いて説明する。
第１図で１１は超電導体としてＮｂ３Ｓｎを存する化合
物超電導線であり、ＮｂｙＳｎ、Ｎｂ＋’Ｃｕ５ｎ＋Ｃ
ｕの複合線であり、最外周はＣｕで被覆されている。
一方１２は超電導体としてＮｂ−Ｔｉを存する合金系超
電導線であり、Ｎｂ−Ｔｉ とＣｕの複合線であり、最
外周はやはりＣｕで被覆されている。
超導電線１１および１２を斜めに切断し両超電導線の接
触面積を大きくして、両者の超電導線切断面を直接接触
させて接触部の超電導性を保ち、その周りをバイン）″
線１３で９４１し、ハンダ１４づけすることにより接触
面の接触性を確保する。
あるいは、超電導線１１および１２の斜め切断面にあら
かじめハンダ被覆したものを切口を合せ加熱してハンダ
を熔融させ、その周りをバイント線１３で緊縛し、ハン
ダ１４で固着しても良い。
接触面のハンダは液体ヘリウム温度では超電導状態にな
るので、超電導線１１および１２０間に若干のハンダ層
が介在していても超電導状態が保たれる。
（発明の効果〕
本発明の化合物超電導線材および合金系超電導線材を共
に斜めに切断し、その切断面を相互に直接接触させ、接
触部の外周よりバイント線で緊縛し、ハンダで固めた構
造をもつことを特徴とする超電導線の接続方法により、
線材の接続面が超電導状態になるため、従来、微少な値
をもっていた抵抗値を完全に零にすることが出来る。
そのため、コイルの減衰時定数が無限大となり、所期値
として与えた磁界が永久に保持され、従来一定期間毎に
行っていた磁界の再励磁、再調整が全く不要になり、取
扱いの手間が省ける。An embodiment of the present invention will be described with reference to the drawings. In Figure 1, 11 is a compound superconducting wire containing Nb3Sn as a superconductor, NbySn, Nb+'Cu5n+C
It is a composite wire of u, and the outermost periphery is coated with Cu. On the other hand, 12 is an alloy superconducting wire containing Nb-Ti as a superconductor, and is a composite wire of Nb-Ti and Cu, and the outermost periphery is also coated with Cu. The superconducting wires 11 and 12 are cut diagonally to increase the contact area between both superconducting wires, and the cut surfaces of both superconducting wires are brought into direct contact to maintain the superconductivity of the contact portion, and the area around it is
941 with a wire 13 and solder 14 to ensure contact on the contact surface. Alternatively, the diagonally cut surfaces of the superconducting wires 11 and 12 may be coated with solder in advance, the cut ends of which are heated to melt the solder, and the periphery thereof may be tied tightly with the bind wire 13 and fixed with the solder 14. Since the solder on the contact surface becomes superconducting at the liquid helium temperature, the superconducting state is maintained even if a slight solder layer is interposed between the superconducting wires 11 and 120. (Effects of the invention) The compound superconducting wire and the alloy superconducting wire of the present invention are both cut diagonally, the cut surfaces are brought into direct contact with each other, the contact portions are bound with bind wire from the outer periphery, and the structure is solidified with solder. By the connection method of superconducting wire, which is characterized by
Since the connecting surface of the wire becomes superconducting, the resistance value, which conventionally had a minute value, can be completely reduced to zero. Therefore, the decay time constant of the coil becomes infinite, and the magnetic field given as the desired value is maintained forever, eliminating the need for re-excitation and readjustment of the magnetic field, which was conventionally done every fixed period, and reducing the trouble of handling. It can be omitted.
第１図は本発明になる超電導線材の接続方法である。な
お第１図左半分は接合部外観図、右半分は接合部断面図
を示す。第２図は従来の超電導線材の接続方法である。
１１・・・化合物超電導線。
１２・・・合金系 〜。
１３・・・バイント線、
１４・・・ハンダ。FIG. 1 shows a method for connecting superconducting wires according to the present invention. The left half of FIG. 1 shows an external view of the joint, and the right half shows a sectional view of the joint. FIG. 2 shows a conventional method for connecting superconducting wires. 11... Compound superconducting wire. 12... Alloy system ~. 13...Bint wire, 14...Solder.
Claims (1)
めに切断し、その切断面を相互に直接接触させ、接触部
の外周よりバイント線で緊縛し、ハンダで固めた構造を
もつことを特徴とする超電導線の接続方法。1. A superconductor characterized by having a structure in which both a compound superconducting wire and an alloy superconducting wire are cut diagonally, the cut surfaces are brought into direct contact with each other, and the contact portion is bound with bind wire from the outer periphery and solidified with solder. How to connect the lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15612387A JPS64673A (en) | 1987-06-23 | 1987-06-23 | Connection method for superconductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15612387A JPS64673A (en) | 1987-06-23 | 1987-06-23 | Connection method for superconductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01673A true JPH01673A (en) | 1989-01-05 |
| JPS64673A JPS64673A (en) | 1989-01-05 |
Family
ID=15620825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15612387A Pending JPS64673A (en) | 1987-06-23 | 1987-06-23 | Connection method for superconductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS64673A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5290638A (en) * | 1992-07-24 | 1994-03-01 | Massachusetts Institute Of Technology | Superconducting joint with niobium-tin |
| JP2020102981A (en) * | 2018-12-25 | 2020-07-02 | トヨタ自動車株式会社 | Stator for rotary electric machine and manufacturing method therefor |
-
1987
- 1987-06-23 JP JP15612387A patent/JPS64673A/en active Pending
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