JPS6239801B2 - - Google Patents
Info
- Publication number
- JPS6239801B2 JPS6239801B2 JP4957781A JP4957781A JPS6239801B2 JP S6239801 B2 JPS6239801 B2 JP S6239801B2 JP 4957781 A JP4957781 A JP 4957781A JP 4957781 A JP4957781 A JP 4957781A JP S6239801 B2 JPS6239801 B2 JP S6239801B2
- Authority
- JP
- Japan
- Prior art keywords
- superconducting coil
- superconducting
- winding frame
- coil device
- view
- 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
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)
- Insulating Of Coils (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Description
【発明の詳細な説明】
この発明は巻枠と超電導コイルとの電気絶縁に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to electrical insulation between a winding frame and a superconducting coil.
ここでは、化合物系超電導導体として一般によ
く用いられているNb3Sn（ニオブとスズの化合
物）について説明する。第１図に従来のNb3Sn超
電導コイル装置を示す。又、第２図に第１図に示
したNb3Sn超電導コイル装置の断面図を示す。図
において、１はNb3Sn超電導コイル、２は巻枠で
ある。第３図にNb3Sn超電導コイル１を構成して
いる。Nb3Sn超電導線材を示す。図において、３
は超電導導体、４は電気絶縁である。Nb3Sn超電
導線材５は高温（約600〜800℃）下において熱処
理される。つまり、Nb3Snは高温で熱処理するこ
とにより生成される。又、Nb3Snは化合物である
ため、応力に対して非常に脆く、コイル状に巻回
すると特性が劣下する。故に、一般には、Nb3Sn
超電導線材５はコイル状に巻回された後に熱処理
が施される。そのため、電気絶縁４には高温に耐
え得るガラス繊維が一般に用いられる。電気絶縁
４はNb3Sn超電導線材５の安定性向上のために、
第３図に示すように螺旋状に装着されている。従
つて、巻枠２とNb3Sn超電導コイル１との間には
巻枠２とNb3Sn超電導コイル１との短絡防止とい
う関点から電気絶縁を施したほうがよい。発明者
らは上記電気絶縁材としてガラス繊維を用いて見
たが、巻線時にガラス繊維に皺が寄るなどして上
記電気絶縁材としては不適当であることを確認し
た。従つて巻枠２とNb3Sn超電導コイル１との間
には電気絶縁物は挿入されていない、従来の超電
導コイル装置は以上のように構成されているので
巻枠と超電導コイルとが短絡する可能性があると
いう危険性を有していた。 Here, Nb 3 Sn (a compound of niobium and tin), which is commonly used as a compound-based superconductor, will be explained. Figure 1 shows a conventional Nb 3 Sn superconducting coil device. Further, FIG. 2 shows a cross-sectional view of the Nb 3 Sn superconducting coil device shown in FIG. 1. In the figure, 1 is a Nb 3 Sn superconducting coil, and 2 is a winding frame. FIG. 3 shows a Nb 3 Sn superconducting coil 1. Shows Nb 3 Sn superconducting wire. In the figure, 3
is a superconducting conductor, and 4 is an electrical insulator. The Nb 3 Sn superconducting wire 5 is heat treated at a high temperature (approximately 600 to 800°C). That is, Nb 3 Sn is generated by heat treatment at high temperature. Furthermore, since Nb 3 Sn is a compound, it is extremely brittle against stress, and its properties deteriorate when it is wound into a coil. Therefore, in general, Nb 3 Sn
The superconducting wire 5 is subjected to heat treatment after being wound into a coil. Therefore, the electrical insulation 4 is generally made of glass fiber that can withstand high temperatures. In order to improve the stability of the Nb 3 Sn superconducting wire 5, the electrical insulation 4 is
As shown in FIG. 3, they are attached in a spiral manner. Therefore, it is better to provide electrical insulation between the winding frame 2 and the Nb 3 Sn superconducting coil 1 in order to prevent a short circuit between the winding frame 2 and the Nb 3 Sn superconducting coil 1. The inventors tried using glass fiber as the electrical insulating material, but found that it was unsuitable as the electrical insulating material because the glass fiber wrinkled during winding. Therefore, no electrical insulator is inserted between the winding frame 2 and the Nb 3 Sn superconducting coil 1. Since the conventional superconducting coil device is configured as described above, the winding frame and the superconducting coil are short-circuited. There was a risk that this could happen.
この発明は上記のような従来のものの欠点を除
去するためになされたもので、巻枠と超電導コイ
ルとの間に軟質マイカを装着することにより、巻
枠と超電導コイルとの短絡が生じない超電導コイ
ル装置を提供することを目的としている。 This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and by installing soft mica between the winding frame and the superconducting coil, a superconducting structure that does not cause short circuit between the winding frame and the superconducting coil can be realized. The purpose is to provide a coil device.
以下、この発明の一実施例を図について説明す
る。第４図において、６は軟質マイカである。軟
質マイカ６は板状のものであるため巻線時に皺が
寄るということはなく、スムーズに巻線できる。
又、軟質マイカ６は高温に強く、約900℃で熱処
理を行なつても、電気絶縁材としての特性及び機
械的強度は殆んど劣下しない。 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 4, 6 is soft mica. Since the soft mica 6 is plate-shaped, it does not wrinkle during winding and can be wound smoothly.
In addition, soft mica 6 is resistant to high temperatures, and its properties as an electrical insulating material and mechanical strength hardly deteriorate even when heat treated at about 900°C.
以上のように、この発明によれば巻枠と超電導
コイルとの間に軟質マイカを装着する構成にした
ので、巻枠と超電導コイルとの短絡が生じない超
電導コイル装置が得られる効果がある。 As described above, according to the present invention, since the soft mica is installed between the winding frame and the superconducting coil, it is possible to obtain a superconducting coil device in which short circuits between the winding frame and the superconducting coil do not occur.
第１図は従来の超電導コイル装置を示す斜視
図、第２図は第１図における従来の超電導コイル
装置の一部詳細を示す断面図、第３図は、Nb3Sn
超電導線材の構成を示す斜視図、第４図は本発明
の一実施例における超電導コイル装置を示す断面
図である。
１…超電導コイル、２…巻枠、３…超電導導
体、４…電気絶縁、５…超電導線材、６…軟質マ
イカ。尚、各図中同一符号は同一又は相当部分を
示す。
Fig. 1 is a perspective view showing a conventional superconducting coil device, Fig. 2 is a sectional view showing some details of the conventional superconducting coil device in Fig. 1, and Fig. 3 is a perspective view showing a conventional superconducting coil device.
FIG. 4 is a perspective view showing the configuration of a superconducting wire, and FIG. 4 is a sectional view showing a superconducting coil device in an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Superconducting coil, 2... Winding frame, 3... Superconducting conductor, 4... Electrical insulation, 5... Superconducting wire, 6... Soft mica. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
導コイルからなる超電導コイル装置において、上
記巻枠と上記超電導コイルとの間に軟質マイカを
装着したことを特徴とする超電導コイル装置。1. A superconducting coil device comprising a winding frame and a superconducting coil whose superconducting conductor is a compound-based superconducting coil, characterized in that soft mica is attached between the winding frame and the superconducting coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4957781A JPS57164505A (en) | 1981-03-31 | 1981-03-31 | Superconductive coil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4957781A JPS57164505A (en) | 1981-03-31 | 1981-03-31 | Superconductive coil device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57164505A JPS57164505A (en) | 1982-10-09 |
| JPS6239801B2 true JPS6239801B2 (en) | 1987-08-25 |
Family
ID=12835062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4957781A Granted JPS57164505A (en) | 1981-03-31 | 1981-03-31 | Superconductive coil device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57164505A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0831368B2 (en) * | 1985-02-05 | 1996-03-27 | 株式会社日立製作所 | Superconducting wire manufacturing method |
-
1981
- 1981-03-31 JP JP4957781A patent/JPS57164505A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57164505A (en) | 1982-10-09 |
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