JPH0346511Y2 - - Google Patents
Info
- Publication number
- JPH0346511Y2 JPH0346511Y2 JP1984121218U JP12121884U JPH0346511Y2 JP H0346511 Y2 JPH0346511 Y2 JP H0346511Y2 JP 1984121218 U JP1984121218 U JP 1984121218U JP 12121884 U JP12121884 U JP 12121884U JP H0346511 Y2 JPH0346511 Y2 JP H0346511Y2
- Authority
- JP
- Japan
- Prior art keywords
- lead
- electrically insulating
- pipe
- cooling gas
- sleeve
- 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
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Description
【考案の詳細な説明】
〔考案の属する技術分野〕
この考案は超電導コイルに外部電源から電力を
供給する電流リードのリード配管と外部配管とを
接続する冷却用ガス導出管部の構造に係り、特に
電気絶縁性能の向上に関する。[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to the structure of a cooling gas outlet pipe section that connects the lead piping of a current lead that supplies power from an external power source to a superconducting coil and an external piping. In particular, it relates to improving electrical insulation performance.
この種の冷却用ガス導出管とこれが使用されて
いる超電導装置の構成を第２図の縦断面図で説明
する。断熱二重容器１の下部に超電導コイル２が
収納され、液体ヘリウムH1により冷却されてい
る。この超電導コイル２は外部電源により励磁さ
れるので超電導コイル２はリード導体３ａに接続
され、リード導体３ａの先端は容器１の外部に突
出して外部電源は外部接続端子３ｂに接続され
る。超電導コイル２が励磁されているときはリー
ド導体３ａは冷却されなければならないのでリー
ド導体３ａにはリード配管３ｃが覆せられて前記
リード導体３ａ、外部接続端子３ｂとともに電流
リード３を形成している。ヘリウムガスH2はリ
ード配管３ｃの中空部３ｄを矢印の方向に流通
し、リード導体３ａを冷却したのち、リード配管
３ｃの上部から分岐して、電気絶縁性円筒体４に
て電気的に絶縁された冷却用ガス導出管５．６に
入り、さらにこのガス導出管６にフランジ結合さ
れた外部配管７に流れる。ここでリード導体３ａ
とリード配管３ｃは同電位にあるが、これらは電
気絶縁性円筒体４および電気絶縁体８によつてそ
れぞれ外部配管７および容器１と電気的に絶縁さ
れる。電気絶縁性円筒体４は例えばセラミツクま
たはプラスチツク製の円筒体であり、ガス導出管
５．６に接着するなどの気密的な方法で結合され
る。ところが冷却用ヘリウムガスはリード配管３
ｃの下端入口付近で温度が4.2Kのヘリウムガス
であり、かつヘリウムは顕熱の大きいガスである
ためリード導体３ａを冷却したあとのガス導出管
５，６付近においてもなお０℃〜−100℃程度の
低温であり、電気絶縁性円筒体４は冷却される。
このため電気絶縁性円筒体４の外表面には大気中
の水分が凝縮付着して沿面絶縁性能の低下をもた
らすという問題があつた。
The configuration of this type of cooling gas outlet pipe and a superconducting device in which it is used will be explained with reference to the longitudinal cross-sectional view of FIG. A superconducting coil 2 is housed in the lower part of a heat-insulating double container 1, and is cooled with liquid helium H1 . Since this superconducting coil 2 is excited by an external power source, the superconducting coil 2 is connected to a lead conductor 3a, the tip of the lead conductor 3a protrudes outside the container 1, and the external power source is connected to an external connection terminal 3b. When the superconducting coil 2 is excited, the lead conductor 3a must be cooled, so the lead pipe 3c is covered with the lead conductor 3a to form the current lead 3 together with the lead conductor 3a and the external connection terminal 3b. . Helium gas H 2 flows through the hollow part 3d of the lead pipe 3c in the direction of the arrow, cools the lead conductor 3a, and then branches from the upper part of the lead pipe 3c and is electrically insulated by the electrically insulating cylindrical body 4. The cooling gas enters the cooling gas outlet pipe 5.6, and further flows to an external pipe 7 flanged to the gas outlet pipe 6. Here, the lead conductor 3a
Although the lead pipe 3c and the lead pipe 3c are at the same potential, they are electrically insulated from the external pipe 7 and the container 1 by the electrically insulating cylinder 4 and the electrical insulator 8, respectively. The electrically insulating cylinder 4 is, for example, a cylinder made of ceramic or plastic and is connected in an air-tight manner, such as by gluing, to the gas outlet pipe 5.6. However, the helium gas for cooling is connected to lead pipe 3.
Helium gas has a temperature of 4.2K near the lower end inlet of c, and since helium is a gas with a large sensible heat, the temperature remains between 0℃ and -100℃ near the gas outlet pipes 5 and 6 after cooling the lead conductor 3a. The electrically insulating cylindrical body 4 is cooled at a low temperature of about .degree.
Therefore, there was a problem in that moisture in the atmosphere condensed and adhered to the outer surface of the electrically insulating cylindrical body 4, resulting in a decrease in creeping insulation performance.
この考案は上述した問題を解消し、電気絶縁性
円筒体が内部から冷却されても外表面に水分が凝
縮付着することのない電気絶縁性能の高い電流リ
ード冷却用ガス導出管を提供することを目的とす
る。
This invention solves the above-mentioned problems and provides a current lead cooling gas outlet pipe with high electrical insulation performance that prevents moisture from condensing and adhering to the outer surface even when the electrically insulating cylindrical body is cooled from the inside. purpose.
この考案の要点は電気的絶縁性円筒体の内径側
に断熱を目的としたスリーブを設け、冷却用ヘリ
ウムガスをこのスリーブの中空部を流通させて円
筒体が冷却されることを防止する点にある。
The key point of this idea is that a sleeve for heat insulation is provided on the inner diameter side of the electrically insulating cylinder, and cooling helium gas is circulated through the hollow part of this sleeve to prevent the cylinder from being cooled. be.
第１図はこの考案の実施例を示す縦断面図で、
電気絶縁性の例えばセラミツク製の電気絶縁性円
筒体１４が、例えばステンレス鋼製の冷却用ガス
導出管１５，１６の間に挾まれて接着されてい
る。この両管の内側にプラスチツク製のフランジ
付きスリーブ１８が設けられ、フランジ１８ａ部
分がガス導出管１５の端部に固定されており、円
筒体１４との間には空間１９を隔てている。この
ような構成において冷却用ヘリウムガスH2はス
リーブ１８の中空部を通つて外部配管７に流通す
るので、円筒体１４は冷却されることがなく、し
たがつて円筒体１４の外表面に水分が凝縮付着せ
ず沿面絶縁性能も損なわれることがない。またス
リーブ１８は電気絶縁物であるプラスチツク製で
あるため電気絶縁性能に悪影響を与えることはな
い。
Figure 1 is a longitudinal sectional view showing an embodiment of this invention.
An electrically insulating cylindrical body 14 made of, for example, ceramic is sandwiched and bonded between cooling gas outlet pipes 15 and 16 made of, for example, stainless steel. A plastic flanged sleeve 18 is provided inside both tubes, and the flange 18a is fixed to the end of the gas outlet tube 15, and a space 19 is separated from the cylindrical body 14. In such a configuration, the cooling helium gas H 2 flows through the hollow part of the sleeve 18 to the external pipe 7, so the cylinder body 14 is not cooled, so that moisture does not form on the outer surface of the cylinder body 14. There is no condensation and adhesion, and the creeping insulation performance is not impaired. Furthermore, since the sleeve 18 is made of plastic, which is an electrical insulator, it does not have any adverse effect on electrical insulation performance.
この考案を展開して次に述べる実施例も有効で
ある。すなわち、
ａ 前述した実施例（第１図）における空間１９
に発泡プラスチツクなどの断熱材を充填して断
熱性を向上させることができる。 The following embodiment, which develops this idea, is also effective. That is, a Space 19 in the above-mentioned embodiment (Fig. 1)
can be filled with an insulating material such as foamed plastic to improve insulation.
ｂ スリーブ１８の材質を断熱材を使用して空間
１９をほとんど無くした構造としてもよい。(b) The sleeve 18 may be made of a heat insulating material so that the space 19 is almost eliminated.
ｃ スリーブ１８の一端を例えばステンレス鋼の
ごとき金属製とすればガス出口管１５の端部へ
の取り付けが容易となる。ただし、この場合は
スリーブ１８の他端は電気絶縁性の材料を使用
して、その沿面距離を充分とる必要がある。c. If one end of the sleeve 18 is made of metal such as stainless steel, it can be easily attached to the end of the gas outlet pipe 15. However, in this case, it is necessary to use an electrically insulating material for the other end of the sleeve 18 to ensure a sufficient creepage distance.
この考案では冷却用ヘリウムガス出口の冷却用
ガス導出管が備える電気絶縁性の円筒体の内側に
空間を隔てて電気絶縁性スリーブを設け、ヘリウ
ムガスはこのスリーブの中空部を流通するように
したので、円筒体はヘリウムガスによつて冷却さ
れることがなく、円筒体の外表面に水分の凝縮が
なくなり、電気絶縁性能の低下を防止できる。
In this invention, an electrically insulating sleeve is provided with a space separated inside the electrically insulating cylindrical body of the cooling gas outlet pipe of the cooling helium gas outlet, and the helium gas flows through the hollow part of this sleeve. Therefore, the cylindrical body is not cooled by the helium gas, moisture does not condense on the outer surface of the cylindrical body, and deterioration in electrical insulation performance can be prevented.
第１図はこの考案の一実施例である冷却用ガス
導出管の縦断面、第２図は従来構造の冷却用ガス
導出管を使用した超電導装置の縦断面図である。
３……電流リード、３ａ……リード導体、３ｃ
……リード配管、４，１４……電気絶縁性円筒
体、５，６，１５，１６……冷却用ガス導出管、
７……外部配管、１８……電気絶縁性スリーブ、
H2……冷却用ヘリウムガス。
FIG. 1 is a vertical cross-sectional view of a cooling gas lead-out pipe according to an embodiment of this invention, and FIG. 2 is a vertical cross-sectional view of a superconducting device using a cooling gas lead-out pipe of a conventional structure. 3...Current lead, 3a...Lead conductor, 3c
... Lead piping, 4, 14 ... Electrically insulating cylindrical body, 5, 6, 15, 16 ... Cooling gas outlet pipe,
7...External piping, 18...Electrical insulating sleeve,
H 2 ...Helium gas for cooling.
Claims (1)
外部配管とを接続する電流リードの冷却用ガス導
出管であつて、少なくとも該冷却用ガス導出管の
一部が電気絶縁性円筒体で形成されるものにおい
て、少なくとも該電気絶縁性円筒体により形成さ
れた部分の前記冷却用ガス導出管の内径側に、該
冷却用ガス導出管と微小空間を隔てて同心的に電
気絶縁性スリーブを設け、該電気絶縁性スリーブ
の中空部を介して冷却用ガスを導出させるように
したことを特徴とする超電導装置における電流リ
ードの冷却用ガス導出管。 A current lead cooling gas lead-out pipe for connecting a current lead lead pipe and an external pipe in a superconducting device, in which at least a part of the cooling gas lead-out pipe is formed of an electrically insulating cylindrical body, An electrically insulating sleeve is provided concentrically on the inner diameter side of the cooling gas outlet pipe at least in a portion formed by the electrically insulating cylindrical body, with a microspace spaced between the electrically insulating sleeve and the electrically insulating sleeve. 1. A cooling gas lead-out pipe for a current lead in a superconducting device, characterized in that the cooling gas is led out through a hollow part of a sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984121218U JPS6138963U (en) | 1984-08-07 | 1984-08-07 | Gas outlet pipe for cooling current leads in superconducting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984121218U JPS6138963U (en) | 1984-08-07 | 1984-08-07 | Gas outlet pipe for cooling current leads in superconducting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6138963U JPS6138963U (en) | 1986-03-11 |
| JPH0346511Y2 true JPH0346511Y2 (en) | 1991-10-01 |
Family
ID=30680010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984121218U Granted JPS6138963U (en) | 1984-08-07 | 1984-08-07 | Gas outlet pipe for cooling current leads in superconducting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6138963U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3132209A4 (en) * | 2014-04-17 | 2017-12-13 | Victoria Link Ltd | Cryogenic fluid circuit design for effective cooling of an elongated thermally conductive structure extending from a component to be cooled to a cryogenic temperature |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5645004A (en) * | 1979-09-20 | 1981-04-24 | Toshiba Corp | Cryostat |
| JPS58118102A (en) * | 1982-01-05 | 1983-07-14 | Toshiba Corp | Electric insulator |
-
1984
- 1984-08-07 JP JP1984121218U patent/JPS6138963U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6138963U (en) | 1986-03-11 |
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