JPH04277605A - Superconductive conductor and coil - Google Patents
Superconductive conductor and coilInfo
- Publication number
- JPH04277605A JPH04277605A JP3039852A JP3985291A JPH04277605A JP H04277605 A JPH04277605 A JP H04277605A JP 3039852 A JP3039852 A JP 3039852A JP 3985291 A JP3985291 A JP 3985291A JP H04277605 A JPH04277605 A JP H04277605A
- Authority
- JP
- Japan
- Prior art keywords
- purity aluminum
- magnetic field
- coil
- aluminum tape
- superconductor
- 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
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
［発明の目的］ [Purpose of the invention]
【０００１】0001
【産業上の利用分野】本発明は、安定化材として銅のほ
かに高純度アルミニウムテープを用いることにより、耐
クエンチ性能を向上させた超電導々体及びこれを用いた
超電導コイルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconductor whose quench resistance is improved by using high-purity aluminum tape in addition to copper as a stabilizing material, and a superconducting coil using the same.
【０００２】0002
【従来の技術】極低温において安定化材として用いる銅
は、印加磁場と共にその比抵抗が増加するが、高純度ア
ルミニウムの比抵抗は、ゼロ磁場での値自身、銅より小
さいばかりではなくほとんど磁場に対して変化しない。
例えば６Ｔ（テスラ）の印加磁場では、銅の比抵抗と純
度９９．９９９％のアルミニウムの比抵抗の比は図７に
示すように１０対１である。（発明者らの実験結果によ
る。）そのため、少しの断面積を有する高純度アルミニ
ウムを超電導々体内に配置することにより、導体全体と
しての複合比抵抗を大幅に低減できる可能性がある。こ
のことに基づく高純度アルミニウム安定化超電導々体が
従来考えられてきた。[Prior Art] The resistivity of copper, which is used as a stabilizing material at extremely low temperatures, increases with the applied magnetic field, but the resistivity of high-purity aluminum at zero magnetic field is not only smaller than that of copper, but also almost does not change with respect to For example, in an applied magnetic field of 6T (Tesla), the ratio of the resistivity of copper to the resistivity of 99.999% pure aluminum is 10:1 as shown in FIG. (Based on experimental results by the inventors.) Therefore, by arranging high-purity aluminum having a small cross-sectional area within a superconductor, it is possible to significantly reduce the composite resistivity of the entire conductor. Based on this, high-purity aluminum stabilized superconductors have been considered.
【０００３】従来、高純度アルミニウムを安定化材とし
て用いた超電導々体は、図８に示すように（第３７回低
温工学発表会Ｂ１−４より引用）、円形断面の高純度ア
ルミニウム線１のまわりにニオブの拡散バリア２を形成
し、その外部にＮｂＴｉのような合金系超電導線１６を
配置し、最外部に円形断面の安定化銅４を配置したもの
が多い。[0003] Conventionally, superconductors using high-purity aluminum as a stabilizing material have been made using a high-purity aluminum wire 1 with a circular cross section, as shown in FIG. In many cases, a niobium diffusion barrier 2 is formed around it, an alloy superconducting wire 16 such as NbTi is arranged outside the barrier, and a stabilizing copper 4 having a circular cross section is arranged at the outermost part.
【０００４】0004
【発明が解決しようとする課題】ところで上述のような
超電導々体においては、導体の中央部の高純度アルミニ
ウムの比抵抗が極低温において高純度アルミニウム素材
の比抵抗と高純度銅の比抵抗のほぼ中間の値を示すとい
う結果が得られている（第３７回低温工学発表会、Ｂ１
−４より引用）。すなわち、高純度アルミニウム本来の
比抵抗特性が得られないという不具合を持っている。本
発明は、高純度アルミニウムの比抵抗が本来の低い値を
示す超電導々体とこれを用いた超電導コイルを提供する
ことを目的とする。
［発明の構成］[Problem to be Solved by the Invention] In the above-mentioned superconductor, the specific resistance of the high-purity aluminum in the center of the conductor is the same as the specific resistance of the high-purity aluminum material and the specific resistance of high-purity copper at extremely low temperatures. The results showed approximately intermediate values (37th Cryogenic Engineering Conference, B1).
- Quoted from 4). In other words, it has the disadvantage that the specific resistance characteristics inherent to high-purity aluminum cannot be obtained. An object of the present invention is to provide a superconductor whose specific resistance of high-purity aluminum exhibits an originally low value, and a superconductor coil using the same. [Structure of the invention]
【０００５】[0005]
【課題を解決するための手段】本発明の超電導々体は、
断面の縦と横と比が大きな高純度アルミニウムテープを
安定化材として用い、磁場の印加方向が前記高純度アル
ミニウムテープの断面の長い辺と平行となるように構成
する。[Means for Solving the Problems] The superconductor of the present invention is
A high-purity aluminum tape having a large length-to-width ratio in cross section is used as a stabilizing material, and the magnetic field is applied in a direction parallel to the long side of the cross section of the high-purity aluminum tape.
【０００６】また、本発明の超電導コイルは、断面の縦
と横の比が大きい高純度アルミニウムテープを安定化材
として用いた超電々導体を巻回し、高純度アルミニウム
テープの断面の長い辺がコイルの軸あるいはコイルによ
って形成される磁場の方向と平行となるように構成する
。In addition, the superconducting coil of the present invention has a superconductor wound around a superconductor using a high-purity aluminum tape having a large length-to-width ratio as a stabilizing material, so that the long side of the cross-section of the high-purity aluminum tape is the coil. The magnetic field is parallel to the axis of the coil or to the direction of the magnetic field formed by the coil.
【０００７】[0007]
【作用】極低温（４．２ Ｋ）での高純度アルミニウム
の比抵抗−磁場特性に関する発明者らの実験測定によれ
ば、図２に示すような結果が得られている。すなわち断
面の縦と横の比が大きな矩形となる高純度アルミニウム
を磁場の印加方向に対して高純度アルミニウムの断面の
長い辺と平行になるようにした場合と断面の短辺平行に
なるようにした場合で比抵抗に大きな差がある。[Operation] According to the inventors' experimental measurements of the resistivity-magnetic field characteristics of high-purity aluminum at extremely low temperatures (4.2 K), results as shown in FIG. 2 have been obtained. In other words, when high-purity aluminum has a rectangular cross-section with a large length-to-width ratio, the long side of the high-purity aluminum cross section is parallel to the direction of magnetic field application, and the short side of the cross section is parallel to the other. There is a large difference in resistivity depending on the case.
【０００８】そこで、上記のような構成の超電導々体を
用いて製作したソレノイド型超電導コイルにおいては磁
場がコイルの軸方向から印加される。ここで、高純度ア
ルミニウムの断面の長い辺と平行に磁場が印加されれば
、高純度アルミニウム部の比抵抗−磁場特性として図２
のＰに示すように高純度アルミニウム本来の比抵抗−磁
場特性が保たれることになる。しかし、断面の短い辺と
平行に磁場を印加した場合Ｒは高純度アルミニウム本来
の比抵抗−磁場特性が得られない。本発明による超電導
々体においては導体全体としての比抵抗−磁場特性が低
く設計でき、超電導々体の耐クエンチ特性が向上する事
により所期の目的を達成することが可能となる。[0008] Therefore, in a solenoid-type superconducting coil manufactured using a superconducting conductor having the above-mentioned configuration, a magnetic field is applied from the axial direction of the coil. Here, if a magnetic field is applied parallel to the long side of the cross-section of high-purity aluminum, the resistivity-magnetic field characteristics of the high-purity aluminum part are shown in Figure 2.
As shown in P, the inherent resistivity-magnetic field characteristics of high-purity aluminum are maintained. However, when a magnetic field is applied parallel to the short side of the cross section, the resistivity-magnetic field characteristics inherent to high-purity aluminum cannot be obtained. In the superconductor according to the present invention, the specific resistance-magnetic field characteristics of the conductor as a whole can be designed to be low, and the quench resistance characteristics of the superconductor can be improved, thereby making it possible to achieve the intended purpose.
【０００９】[0009]
【実施例】以下本発明の実施例を図１を参照して説明す
る。高純度アルミニウムを安定化材として用いた本実施
例の超電導々体は、凹型安定化銅ハウジング５の内側に
化合物系超電導線３を埋込み、断面の縦と横の比が大き
い高純度アルミニウムテープ６を化合物系超電導線３と
凹型安定化銅ハウジング５との間に左右対称に埋込んだ
後、凹型安定化銅ハウジング５の上部からもう一方の凹
型安定化銅ハウジング７をはめこみ、それぞれ半田等８
で接合されている。但し、高純度アルミニウムテープ６
は凹型安定化銅ハウジング５，７と直接半田付けした場
合、高純度アルミニウムは接合面の良好な接合が難しい
ため、高純度アルミニウムテープ６に銅クラッド９を施
こすことにより凹型安定化銅ハウジング５，７と接合し
やすい構成とする。さらに、超電導々体にたいする磁場
Ｂの印加方向に対して、高純度アルミニウムテープ６の
面が平行となるように構成する。[Embodiment] An embodiment of the present invention will be described below with reference to FIG. The superconductor of this embodiment using high-purity aluminum as a stabilizing material has a compound-based superconducting wire 3 embedded inside a concave stabilizing copper housing 5, and a high-purity aluminum tape 6 with a large length-to-width ratio in cross section. are embedded symmetrically between the compound superconducting wire 3 and the concave stabilized copper housing 5, and then the other concave stabilized copper housing 7 is fitted from the top of the concave stabilized copper housing 5, and solder etc.
are joined with. However, high purity aluminum tape 6
When soldering directly to the concave stabilized copper housings 5 and 7, it is difficult to achieve good bonding of the joint surfaces with high-purity aluminum, so by applying a copper cladding 9 to the high-purity aluminum tape 6, the concave stabilized copper housing 5 , 7 is configured to be easily joined. Further, the surface of the high-purity aluminum tape 6 is configured to be parallel to the direction in which the magnetic field B is applied to the superconductor.
【００１０】この超電導々体の高純度アルミニウムテー
プ６は前述の図２のように本来の比抵抗性能を発揮する
ことができるため、導体全体の比抵抗が大幅に低減でき
る。そのため、この超電導々体を用いて図３に示す超電
導コイル１０を形成した場合、耐クエンチ性能を向上で
きる。Since this superconducting high-purity aluminum tape 6 can exhibit its original resistivity performance as shown in FIG. 2, the resistivity of the entire conductor can be significantly reduced. Therefore, when the superconducting coil 10 shown in FIG. 3 is formed using this superconducting conductor, the quench resistance performance can be improved.
【００１１】（他の実施例１）図４に示す超電導々体は
上記実施例の超電導々体と同様の構成及び効果を有する
が、銅９でクラッドされた高純度アルミニウムテープ６
は超電導々体の中心軸に配置されており、高純度アルミ
ニウムテープ６の両側に化合物系超電導線３が半田等８
で接合されている。このことにより、図１に示す超電導
々体に比べて作業工数が減る為経済的に有利である。(Other Embodiment 1) The superconductor shown in FIG. 4 has the same structure and effect as the superconductor of the above embodiment, but a high-purity aluminum tape 6 clad with copper 9 is used.
is placed on the central axis of the superconductor, and compound superconducting wires 3 are bonded with solder or the like 8 on both sides of a high-purity aluminum tape 6.
are joined with. This is economically advantageous because the number of man-hours required is reduced compared to the superconductor shown in FIG.
【００１２】（他の実施例２）図５に示す超電導々体は
上記実施例の超電導々体と同様の構成及び効果を有する
が、銅９でクラッドした高純度アルミニウムテープ６は
凹型安定化銅、ハウジング５，７の外側に磁場Ｂの印加
方向に対して高純度アルミニウムテープ６の断面の長い
辺が平行となるように半田等８で接合されている。この
ような構成の超電導々体は、高純度アルミニウムテープ
６を凹型安定化銅ハウジング５，７の外側に設けるため
接合しやすいという利点がある。(Other Embodiment 2) The superconductor shown in FIG. 5 has the same structure and effects as the superconductor of the above embodiment, but the high purity aluminum tape 6 clad with copper 9 is made of concave stabilized copper. A high-purity aluminum tape 6 is bonded to the outside of the housings 5 and 7 with solder or the like 8 so that the long side of the cross section of the high-purity aluminum tape 6 is parallel to the direction in which the magnetic field B is applied. A superconductor having such a structure has the advantage that it is easy to join because the high-purity aluminum tape 6 is provided on the outside of the concave stabilized copper housings 5 and 7.
【００１３】（他の実施例３）図６に示す超電導々体も
上記実施例の超電導々体と同様の効果を有するが、合金
系統超電導線１６の中央部に銅９でクラッドした高純度
アルミニウムテープ６が埋め込まれている。但し、高純
度アルミニウムテープ６は、磁場Ｂの印加方向に対して
その断面の長い辺と平行となるように配置されている。(Other Example 3) The superconductor shown in FIG. 6 also has the same effect as the superconductor of the above example, but a high purity aluminum clad with copper 9 is used in the center of the alloy superconducting wire 16. A tape 6 is embedded. However, the high-purity aluminum tape 6 is arranged so that the long side of its cross section is parallel to the direction in which the magnetic field B is applied.
【００１４】[0014]
【発明の効果】以上説明したように本発明によれば、高
純度アルミニウム本来の低い比抵抗−磁場特性を生かす
ことができるので、耐クエンチ性能を向上させた超電導
々体及びこれを用いた超電導コイルが製作できる。As explained above, according to the present invention, it is possible to take advantage of the inherent low resistivity-magnetic field characteristics of high-purity aluminum, thereby providing a superconductor with improved quench resistance and a superconductor using the same. Coils can be manufactured.
【図１】本発明の第１の実施例の超電導々体の断面図。FIG. 1 is a sectional view of a superconductor according to a first embodiment of the present invention.
【図２】本発明の作用原理を説明するための比抵抗率の
図。FIG. 2 is a diagram of specific resistivity for explaining the principle of operation of the present invention.
【図３】本発明の実施例の超電導コイルの断面図。FIG. 3 is a sectional view of a superconducting coil according to an embodiment of the present invention.
【図４】本発明の第２の実施例の超電導々体の図。FIG. 4 is a diagram of a superconductor according to a second embodiment of the present invention.
【図５】本発明の第３の実施例の超電導々体の図。FIG. 5 is a diagram of a superconductor according to a third embodiment of the present invention.
【図６】本発明の第４の実施例の超電導々体の図。FIG. 6 is a diagram of a superconductor according to a fourth embodiment of the present invention.
【図７】銅とアルミニウムの比抵抗率の図。FIG. 7 is a diagram of specific resistivity of copper and aluminum.
【図８】従来の超電導々体の図。FIG. 8 is a diagram of a conventional superconductor.
１…高純度アルミニウム線 ２
…ニオブの拡散バリア
３…化合物系超電導線
４…円形断面の安定化銅
５，７…凹型安定化銅ハウジング ６…高純
度アルミニウムテープ
８…半田等
９…ニオブ１０…超電導コイル
１６…合金系超電導線
Ｂ…磁場
Ｐ…発明者らの実験結果による高純度アルミニウムテー
プの断面の長い辺と平行に磁場を印加した場合の比抵抗
−磁場特性
Ｒ…発明者らの実験結果による高純度アルミニウムテー
プの断面の短い辺と平行に磁場を印加した場合の比抵抗
−磁場特性
Ｓ…発明者らの実験結果による高純度アルミニウムの比
抵抗−磁場特性1...High purity aluminum wire 2
...Niobium diffusion barrier 3...Compound superconducting wire
4... Stabilized copper with circular cross section 5, 7... Concave stabilized copper housing 6... High purity aluminum tape 8... Solder, etc.
9... Niobium 10... Superconducting coil
16...Alloy-based superconducting wire B...Magnetic field P...Based on the inventors' experimental results Specific resistance-magnetic field characteristics R when a magnetic field is applied parallel to the long side of the cross section of a high-purity aluminum tape...Based on the inventors' experimental results Specific resistance-magnetic field characteristics S when a magnetic field is applied parallel to the short side of the cross section of a high-purity aluminum tape...Resistivity-magnetic field characteristics of high-purity aluminum based on experimental results by the inventors
Claims (2)
高純度アルミニウムテープを、矩形断面の長い辺が磁場
の印加方向に対して平行になるように埋込んだことを特
徴とする超電導々体。1. A superconducting conductor characterized in that a high-purity aluminum tape having a rectangular cross section with a large length-to-width ratio is embedded such that the long sides of the rectangular cross section are parallel to the direction of application of a magnetic field. body.
ミニウムテープを安定化材として用いた超電導々体を巻
回し、高純度アルミニウムテープの断面の長い辺がコイ
ルの軸あるいはコイルによって形成される磁場の方向と
平行となるように構成したことを特徴とする超電導コイ
ル。[Claim 2] A superconductor using a high-purity aluminum tape as a stabilizing material is wound with a high-purity aluminum tape having a large length-to-width ratio of the cross section, and the long side of the cross section of the high-purity aluminum tape is formed by the axis of the coil or the coil. A superconducting coil characterized in that it is configured to be parallel to the direction of a magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3039852A JP2768844B2 (en) | 1991-03-06 | 1991-03-06 | Superconductor and superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3039852A JP2768844B2 (en) | 1991-03-06 | 1991-03-06 | Superconductor and superconducting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04277605A true JPH04277605A (en) | 1992-10-02 |
| JP2768844B2 JP2768844B2 (en) | 1998-06-25 |
Family
ID=12564500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3039852A Expired - Lifetime JP2768844B2 (en) | 1991-03-06 | 1991-03-06 | Superconductor and superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2768844B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010016269A1 (en) | 2008-08-08 | 2010-02-11 | 学校法人日本大学 | Pure-aluminum structural material with high specific strength solidified and molded by giant-strain processing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224214A (en) * | 1985-03-28 | 1986-10-04 | 住友電気工業株式会社 | Aluminum stabilization superconductor |
-
1991
- 1991-03-06 JP JP3039852A patent/JP2768844B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61224214A (en) * | 1985-03-28 | 1986-10-04 | 住友電気工業株式会社 | Aluminum stabilization superconductor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010016269A1 (en) | 2008-08-08 | 2010-02-11 | 学校法人日本大学 | Pure-aluminum structural material with high specific strength solidified and molded by giant-strain processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2768844B2 (en) | 1998-06-25 |
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