JP2508722B2 - Superconducting coil - Google Patents
Superconducting coilInfo
- Publication number
- JP2508722B2 JP2508722B2 JP62129488A JP12948887A JP2508722B2 JP 2508722 B2 JP2508722 B2 JP 2508722B2 JP 62129488 A JP62129488 A JP 62129488A JP 12948887 A JP12948887 A JP 12948887A JP 2508722 B2 JP2508722 B2 JP 2508722B2
- Authority
- JP
- Japan
- Prior art keywords
- superconductor
- substrate
- spiral
- superconducting coil
- ceramic
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は金属酸化物系のセラミックス超電導体を用い
た超電導コイルに関するものである。TECHNICAL FIELD The present invention relates to a superconducting coil using a metal oxide-based ceramics superconductor.
［従来技術とその問題点］ 従来、超電導コイルとしては、NbTi、Nb3Sn等比較的
加工性に富む金属の範疇に入る線材を巻回してなるもの
が使用されていたが、そのコイルは超電導転移温度（T
c）が20K以下と低く、高価で取扱いの厄介な液体ヘリウ
ムを用いる必要があり、機器のコストが高くつくという
欠点がある。[Prior art and its problems] Conventionally, as a superconducting coil, a coil formed by winding a wire rod that belongs to the category of a metal having a relatively high workability such as NbTi or Nb 3 Sn has been used. Transition temperature (T
c) is as low as 20K or less, it is necessary to use liquid helium which is expensive and cumbersome to handle, and there is a drawback that the cost of the equipment is high.
ところで、最近、セラミック超電導材料が発見され、
液体窒素温度で超電導特性を示すことが判った。By the way, recently, a ceramic superconducting material was discovered,
It was found that it exhibits superconducting properties at liquid nitrogen temperature.
このセラミック超電導材を用いれば、液体ヘリウムの
代りに安価で取扱いの容易な液体窒素を用いることがで
き、重宝な超電導コイルが得られることは明らかであ
る。By using this ceramic superconducting material, it is possible to use liquid nitrogen, which is cheap and easy to handle, instead of liquid helium, and it is clear that a useful superconducting coil can be obtained.
［発明の目的］ 本発明の目的は、液体窒素中で運転することのできる
超電導コイルを提供することにある。OBJECT OF THE INVENTION An object of the present invention is to provide a superconducting coil that can be operated in liquid nitrogen.
［発明の概要］ 本発明のコイルは、基板の表面にセラミック超電導体
を渦巻状に配置したものを、右渦巻状のものと左渦巻状
のものを交互に積層し、渦巻状超電導体の始端部と終端
部に設けた孔に前記基板より熱膨張率の大きい材質から
なる貫通ボルトを通し、前記積層体を締付けてなるもの
である。[Outline of the Invention] The coil of the present invention has a structure in which ceramic superconductors are spirally arranged on the surface of a substrate, and right spiral and left spiral are alternately stacked to form a spiral superconductor starting end. A through bolt made of a material having a higher coefficient of thermal expansion than the substrate is passed through holes provided in the end portion and the terminal portion, and the laminated body is tightened.
このような構成とすれば、隣接する基板における渦巻
状超電導体の始端と終端を互に接触により短絡させただ
けでも接触部には有効に圧力が作用し、充分な電気的接
続を得ることができる。With such a structure, even if the starting end and the terminating end of the spiral superconductor on the adjacent substrates are short-circuited by contacting each other, the pressure is effectively applied to the contact portion, and sufficient electrical connection can be obtained. it can.
本発明の場合、基板材としては、セラミック絶縁体、
例えばSiC、BNなどの非酸化物系セラミック、Al2O3、ZrO
2などの酸化物系セラミック、金属例えばCu、Cu-Ni合
金、スレンレス鋼、Nb、Tiまたは両者の複合材を用いる
ことができる。In the case of the present invention, the substrate material is a ceramic insulator,
For example, non-oxide ceramics such as SiC and BN, Al 2 O 3 , ZrO
Oxide-based ceramics such as 2 , metal such as Cu, Cu—Ni alloy, stainless steel, Nb, Ti or a composite material of both can be used.
またセラミック超電導体としては、液体窒素温度で超
電導性を示すセラミック超電導体、例えば式MBa2Cu3O7
（但しＭはＹ、Gd、Lu、Euをあらわす）で表わされる層
状ペロブスカイト型の結晶構造を有する酸化物系セラミ
ックが用いられ、それらは前記の式を与える理論量の各
構成元素の酸化物、炭酸化物等の混合粉末体を焼成する
ことによって得ることができる。本発明の実施にあたっ
ては、前記混合粉末を溶媒と混練してスラリー状にした
ものを印刷のような手段で塗布したり、溝部につめ込ん
だりした後焼成される。Further, as the ceramic superconductor, a ceramic superconductor exhibiting superconductivity at liquid nitrogen temperature, for example, the formula MBa 2 Cu 3 O 7
(Where M represents Y, Gd, Lu, and Eu), an oxide-based ceramic having a layered perovskite-type crystal structure is used, and these are oxides of the respective constituent elements in theoretical amounts that give the above formula, It can be obtained by firing a mixed powder of carbonate or the like. In practicing the present invention, the mixed powder is kneaded with a solvent to form a slurry, which is applied by means such as printing or clogged in a groove and then fired.
［実施例］ 第１図は、本発明による超電導コイルの一例を示して
いる。このコイルは、例えばCu-Ni合金からなる円形基
板１の片面に、例えばY-Ba-Cu-Oセラミック超電導体２
を渦巻状に配置した二種類の単位板31,32を交互に必要
数積み重ね、その上下に押え板51,52を配し、これを前
記基板より熱膨張率の大きい材質からなる貫通ボルト６
とナット71,72で締付けて一体に形成されている。Example FIG. 1 shows an example of a superconducting coil according to the present invention. This coil is, for example, a Y-Ba-Cu-O ceramic superconductor 2 on one surface of a circular substrate 1 made of Cu-Ni alloy.
The required number of two types of unit plates 31 and 32 arranged in a spiral shape are alternately stacked, and pressing plates 51 and 52 are arranged above and below the unit plates 31 and 32.
And the nuts 71 and 72 are tightened to be integrally formed.
各単位板31,32は、夫々第２図に示すように、基板１
の片面に右渦巻状と左渦巻状にセラミック超電導体２が
配置されたものからなり、セラミック超電導体２の始端
部と終端部及び基板部には夫々貫通ボルト６用の貫通孔
41,42及び43が形成されている。また、各単位板31,32に
おける超電導体２の片端部（単位板31にあっては外方端
部、単位板32にあっては内方端部）は、第１図にも一部
示すように、超電導体２が板の全厚を貫通するように形
成されている。超電導体２の渦巻形状は第３図に示すよ
うなものであってもよい。As shown in FIG. 2, each unit plate 31 and 32 has a substrate 1
The ceramic superconductor 2 is arranged on one surface of the ceramic superconductor 2 in a right-handed spiral shape and a left-handed spiral shape.
41, 42 and 43 are formed. Also, one end of the superconductor 2 in each unit plate 31, 32 (outer end in the unit plate 31, inner end in the unit plate 32) is partially shown in FIG. Thus, the superconductor 2 is formed so as to penetrate the entire thickness of the plate. The spiral shape of the superconductor 2 may be as shown in FIG.
このような単位板31,32は夫々基板１に巻方向が逆と
なった渦巻状の溝を作り、その溝部に夫々焼成後超電導
体２となる組成の原料粉末の混合体をつめ込んでそれを
焼成処理することにより容易に得ることができる。この
ようにして形成された単位板31,32の右渦巻状のものと
左渦巻状のものとを交互に積み重ねることによってパン
ケーキ型のコイルが形成されるが、これを貫通ボルト６
とナット71,72で締付けることにより、隣接するパンケ
ーキの超電導体２における始端と終端が互に橋絡し、電
気的接続が得られる。Such unit plates 31 and 32 each have a spiral groove in which the winding direction is reversed in the substrate 1, and the groove is filled with a mixture of raw material powders having a composition to be the superconductor 2 after firing. Can be easily obtained by subjecting to a baking treatment. The pancake type coil is formed by alternately stacking the right spiral shape and the left spiral shape of the unit plates 31 and 32 thus formed.
By tightening with the nuts 71 and 72, the starting end and the terminating end of the superconductors 2 of the adjacent pancakes are bridged to each other and an electrical connection is obtained.
この例は各単位板31,32の段階でセラミック超電導体
２を生成させているが、超電導体２はボルト６を締付け
た後に生成されるようにしてもよい。In this example, the ceramic superconductor 2 is produced at the stage of each unit plate 31, 32, but the superconductor 2 may be produced after the bolt 6 is tightened.
［発明の効果］ 本発明によれば、同一形状のものを多数作ればよいの
で、印刷もしくは型成形によって安価に作ることができ
る。しかも超電導体が高温で超電導性を示すものである
から、冷媒として安価な液体窒素を用いて稼働すること
ができる。また基板より熱膨張率の大きい材質からなる
貫通ボルトをもって締付けているので、積層間における
超電導体の電気的橋絡がより完全になり、実用上極めて
重宝である。[Effects of the Invention] According to the present invention, a large number of products having the same shape may be produced, so that the products can be produced at low cost by printing or molding. Moreover, since the superconductor exhibits superconductivity at high temperatures, it is possible to operate using inexpensive liquid nitrogen as the refrigerant. Also, since the through bolts made of a material having a higher coefficient of thermal expansion than the substrate are used for tightening, the electric bridge of the superconductor between the stacked layers becomes more complete, which is extremely useful in practice.
第１図は本発明に係るコイルの一実施例を示す説明図、
第２図はそのコイルに用いる単位板の平面図、第３図は
単位板における渦巻形状の別の例を示す図である。 1:基板、2:セラミック超電導体、31及び32:単位板、41,
42及び43:貫通孔、51及び52:押え板、6:貫通ボルト。FIG. 1 is an explanatory view showing an embodiment of a coil according to the present invention,
FIG. 2 is a plan view of a unit plate used for the coil, and FIG. 3 is a diagram showing another example of the spiral shape of the unit plate. 1: substrate, 2: ceramic superconductor, 31 and 32: unit plate, 41,
42 and 43: through hole, 51 and 52: retainer plate, 6: through bolt.
Claims (1)
に配置したものの右渦巻状のものと左渦巻状のものを交
互に積層し、渦巻状超電導体の始端部と終端部に設けた
孔に前記基板より熱膨張率の大きい材質からなる貫通ボ
ルトを通し、前記積層体を締め付けてなることを特徴と
する超電導コイル。1. A hole provided in a starting end portion and a terminating end portion of a spiral superconductor, in which ceramic superconductors are spirally arranged on a surface of a substrate and right spiral and left spiral are alternately laminated. A superconducting coil, wherein a through bolt made of a material having a coefficient of thermal expansion larger than that of the substrate is passed through and the laminate is tightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129488A JP2508722B2 (en) | 1987-05-26 | 1987-05-26 | Superconducting coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62129488A JP2508722B2 (en) | 1987-05-26 | 1987-05-26 | Superconducting coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63293801A JPS63293801A (en) | 1988-11-30 |
| JP2508722B2 true JP2508722B2 (en) | 1996-06-19 |
Family
ID=15010718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62129488A Expired - Lifetime JP2508722B2 (en) | 1987-05-26 | 1987-05-26 | Superconducting coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508722B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817127B2 (en) * | 1993-02-16 | 1996-02-21 | 超電導発電関連機器・材料技術研究組合 | Oxide superconducting coil |
| JP4899983B2 (en) * | 2007-03-28 | 2012-03-21 | 住友電気工業株式会社 | Superconducting coil and superconducting equipment provided with the superconducting coil |
| US20200279681A1 (en) | 2018-12-27 | 2020-09-03 | Massachusetts Institute Of Technology | Variable-width, spiral-grooved, stacked-plate superconducting magnets and electrically conductive terminal blocks and related construction techniques |
| JP2023526616A (en) * | 2020-05-20 | 2023-06-22 | マサチューセッツ インスティテュート オブ テクノロジー | Mirrored Winding Packs for Laminated Plate Superconducting Magnets |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0614404Y2 (en) * | 1987-04-28 | 1994-04-13 | 株式会社フジクラ | Superconducting magnet |
-
1987
- 1987-05-26 JP JP62129488A patent/JP2508722B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63293801A (en) | 1988-11-30 |
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