JPS5974689A - Closed type current introducing terminal - Google Patents
Closed type current introducing terminalInfo
- Publication number
- JPS5974689A JPS5974689A JP57183724A JP18372482A JPS5974689A JP S5974689 A JPS5974689 A JP S5974689A JP 57183724 A JP57183724 A JP 57183724A JP 18372482 A JP18372482 A JP 18372482A JP S5974689 A JPS5974689 A JP S5974689A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- insulation
- current introducing
- sealed
- introducing terminal
- 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
- 239000003566 sealing material Substances 0.000 claims abstract description 8
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 15
- 239000000945 filler Substances 0.000 abstract description 7
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000012212 insulator Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000004593 Epoxy Substances 0.000 abstract description 2
- 239000004809 Teflon Substances 0.000 abstract description 2
- 229920006362 Teflon® Polymers 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 239000001307 helium Substances 0.000 description 10
- 229910052734 helium Inorganic materials 0.000 description 10
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 10
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の属する技術分野〕 この発明は電流導入端子の絶縁物の購造に関する。[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to the purchase of insulators for current introduction terminals.
第１図は、クライオスタット２に設置された超電導マグ
ネット３の概略を示す。超電導マグネット３から電流リ
ード線６，７が出てお多端子１を通って大気側８へ導出
されている。クライオスタット内にはヘリウムが入って
おり、超電導マグネット３は液体ヘリウム５に浸漬しで
ある。電流導入端子１はヘリウムガス相４と大気中８に
存在している。破線人で囲まれた電流導入端子１の拡大
図を第２図に示す。電流リード線の素線は電流導入端子
の素線ハンダ付金具でハンダ付されることによシ犬気Ｉ
１１８とヘリウムガス側４とはシールされる。′ｉｉ流
導入端子の絶縁物の形状１ｏｆｉ側面から見ると波釘た
せである。これは電流リード線と接地側のクライオスタ
ット間にかかる電圧に対し絶縁破壊しないように沿面距
離を長くとる必要からである。しかし、第３．４図で示
すようにヘリウムの破壊電圧はガスになると極端に低下
し、また電極間距離（ＦＥ、 ＢＣＤ）を長くとっても
ほとんど上昇しない。それに大気側の絶縁部分に水が付
着すると、水は導′准性で必るためヘリウムガスの耐颯
圧よシも低い電圧で破壊をおこす１．その結果、超電導
マグネットの運転制御、計測等は困難をきわめた。FIG. 1 schematically shows a superconducting magnet 3 installed in a cryostat 2. Current lead wires 6 and 7 come out from the superconducting magnet 3, pass through the multi-terminal 1, and are led out to the atmosphere side 8. The cryostat contains helium, and the superconducting magnet 3 is immersed in liquid helium 5. The current introduction terminal 1 exists in the helium gas phase 4 and in the atmosphere 8. FIG. 2 shows an enlarged view of the current introduction terminal 1 surrounded by broken lines. The wire of the current lead wire is soldered with the wire soldering fitting of the current introduction terminal, so that
118 and the helium gas side 4 are sealed. 'ii Shape of the insulator of the flow introduction terminal 1ofi When viewed from the side, it has a corrugated peg. This is because it is necessary to provide a long creepage distance to prevent dielectric breakdown due to the voltage applied between the current lead wire and the ground-side cryostat. However, as shown in Figure 3.4, the breakdown voltage of helium decreases extremely when it becomes a gas, and it hardly increases even if the distance between the electrodes (FE, BCD) is increased. Furthermore, if water adheres to the insulating part on the atmosphere side, it will break down at a voltage that is lower than the high pressure resistance of helium gas because water is a conductor. As a result, operation control and measurement of superconducting magnets became extremely difficult.
本発明は上記のような欠点を取除き従来に比ベヘリウム
ガス中でも、また水が（ＴＩ着した場合でも絶縁耐圧の
高い電流導入端子を提供するものである。The present invention eliminates the above-mentioned drawbacks and provides a current introducing terminal which has a high dielectric strength even in behelium gas and when water (TI) adheres to it compared to the conventional terminal.
本発明は、電流導入端子絶縁物の加工と電流リード線を
絶縁する方法に関する。電流導入端子の絶縁物は円筒に
なっておりその中でリード線を結線し円筒内をシール材
で密閉するか円筒内に絶縁性充てん剤を注入することに
よりリード線の素線は絶縁シールされるので大気側、ヘ
リウムガス側の電流導入端子はリード線彼覆部の絶縁耐
圧まで向上する。The present invention relates to processing of current introduction terminal insulators and a method of insulating current lead wires. The insulator of the current introduction terminal is a cylinder, and the lead wire is insulated and sealed by connecting the lead wire inside the cylinder and sealing the inside of the cylinder with a sealing material, or by injecting an insulating filler into the cylinder. Therefore, the dielectric strength of the current introduction terminals on the atmosphere side and helium gas side increases to the level where the lead wires are covered.
〔発明の効果〕
本発明による′電流導入端子を用いれば、端子に水が刺
着した場合でも耐圧の低い−・リウムガス中でも絶縁１
耐圧の高い電流導入端子を提供できる。[Effects of the Invention] If the current introducing terminal according to the present invention is used, even if water sticks to the terminal, the insulation resistance is low even in lithium gas.
A current introduction terminal with high withstand voltage can be provided.
第５図は、本発明による電流導入端子１８である。電流
導入端子の絶縁円筒部２０の上下にはテーバ状のめねじ
２３，２４が切ってめり、そこにおねじに切ったテーバ
シール２１．２２がねじ込唸れるようになっている。テ
ーバシールには電流リード線が通る穴がおいている、そ
の材質は、絶縁円筒２０よりもやわらかい材質でできて
いる。FIG. 5 shows a current introduction terminal 18 according to the present invention. Taper-shaped internal threads 23 and 24 are cut into the upper and lower parts of the insulating cylindrical part 20 of the current introduction terminal, into which taper seals 21 and 22 cut into threads can be screwed. The taber seal has a hole through which the current lead wire passes, and is made of a softer material than the insulating cylinder 20.
たとえば絶縁円筒をＦ几Ｐ（エポキシガラスクロス積層
板）とすると、テーパ／−ル材はテフロンである。この
ような拐料構成にして、電流リード線を通したデーパ／
−ル材を、絶縁円筒にねじ込む。For example, if the insulating cylinder is F-P (epoxy glass cloth laminate), the tapered/ru material is Teflon. With such a wire configuration, the taper/
- Screw the material into the insulating cylinder.
すると７−ル拐はやわらかいだめリード線の被覆部２６
や絶縁円筒２０にくい込みすき間２５．２６はシールさ
れる。したがって絶縁円筒内の結線部２７や素線２８は
大気０１１１８やヘリウムガス７側に対し密閉される。Then, the 7-leaf wire is soft and the sheathing part 26 of the lead wire is
The gaps 25 and 26 where the insulating cylinder 20 is inserted are sealed. Therefore, the connection portion 27 and the wire 28 inside the insulating cylinder are sealed from the atmosphere 01118 and the helium gas 7 side.
シール材による素線や結線部の密閉方法の他に絶縁性充
てん剤を注入する方法もある。リード線を通した電流導
入端子の一端をシール材でシールし他方から絶縁円筒内
の空間部分３０に充てん剤を注入する。このようにすれ
ば、素紳部２８や結線部２７が絶縁されるはかシでなく
、素線２８とそれの被覆部間３１や被覆部とシール材間
２６、シール材と絶縁円筒との間２５にも充てん剤が入
るので、′４流導入端子のシール性は高い。In addition to the method of sealing the wires and connections using a sealant, there is also a method of injecting an insulating filler. One end of the current introducing terminal through which the lead wire is passed is sealed with a sealing material, and a filler is injected into the space 30 inside the insulating cylinder from the other end. In this way, the element wire 28 and the connection part 27 are not insulated by the frame, but between the element wire 28 and its sheathing part 31, between the sheathing part and the sealing material 26, and between the sealing material and the insulating cylinder. Since the filler also enters the gap 25, the sealing performance of the '4 flow introduction terminal is high.
このように、素線や結線部をシール材や充てん剤で密閉
することによシ′岨流導入端子の絶縁耐圧は、リード線
板Ｃｖ部の絶縁耐圧オで向上する。In this way, by sealing the strands and the connection portions with a sealant or filler, the dielectric strength of the current introduction terminal is improved by the dielectric strength of the lead wire plate Cv portion.
第１図は、クライオスタット内に設置された超電導マグ
ネットの概略を示す断面図、第２図は、第１図で示した
電流導入端子の拡大断面図、第３図は、極低温ヘリウム
ガスの破壊電圧の温度依存性の特性図、第４図は、ヘリ
ウムガスの破壊電圧の電極間距離依存性の特性図、第５
図、第６図は本発明による電流導入端子の概略を示す断
面図である。
６．７・・・電流リード線、９・・・上ぶた、１８・・
・電流導入端子、１９・・・電流導入端子の取付金具、
２０・・・絶縁円筒、
２１、２２・・・テーバシール、２３．２４・・・テー
バめねじ、２７・・・リード線結線部、２８・・・リー
ド線素線。
代理人 弁理士 則 近 憲 佑 （ほか１名）第１図
第 ２ 図
第 ３ 図
第４図
袋間」を−」Figure 1 is a cross-sectional view schematically showing the superconducting magnet installed in the cryostat, Figure 2 is an enlarged cross-sectional view of the current introduction terminal shown in Figure 1, and Figure 3 is the destruction of cryogenic helium gas. Figure 4 is a characteristic diagram of the temperature dependence of voltage, and Figure 5 is a characteristic diagram of the dependence of the breakdown voltage of helium gas on the interelectrode distance.
6 are sectional views schematically showing the current introducing terminal according to the present invention. 6.7... Current lead wire, 9... Upper lid, 18...
・Current introduction terminal, 19...Mounting bracket for current introduction terminal,
20... Insulating cylinder, 21, 22... Taber seal, 23.24... Taber female thread, 27... Lead wire connection portion, 28... Lead wire strand. Agent Patent Attorney Kensuke Chika (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Fukurama”
Claims (2)
円筒でメジ円筒の端には、テーバ状のめねじが切ってる
シ、そこにテーバ状のおねじに切っであるシール材をね
じ込むことによりリード線は被覆部ごとシールされ結線
部は絶縁筒内部で密閉されることを特徴とした密閉型電
流導入端子。(1) The inside of the insulating tube through which the lead wire of the current introduction terminal passes is cylindrical, and the end of the cylindrical cylinder has a tapered female thread cut into it, into which a sealing material cut into a tapered male thread is screwed. This is a sealed current introduction terminal characterized by the fact that the lead wire is sealed along with the sheathing part, and the connection part is sealed inside the insulating tube.
い状になっており、絶縁筒の端には、シール材と絶縁性
のシール押板及びふくろナツトが付属し、ふくろナツト
をしめつけることによりリード線は被覆部ごとシールさ
れ、結線部は絶縁筒内部で密閉されることを特徴とする
特許請求の範囲第１項記載の密閉型電流導入端子。(2) The inside of the insulating cylinder through which the lead wire of the current introduction terminal passes is conical, and a sealing material, an insulating seal press plate, and a bag nut are attached to the end of the insulating cylinder, and the bag nut must be tightened. 2. The sealed current introduction terminal according to claim 1, wherein the lead wire is sealed together with its covering portion, and the connection portion is hermetically sealed inside an insulating cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57183724A JPS5974689A (en) | 1982-10-21 | 1982-10-21 | Closed type current introducing terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57183724A JPS5974689A (en) | 1982-10-21 | 1982-10-21 | Closed type current introducing terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5974689A true JPS5974689A (en) | 1984-04-27 |
Family
ID=16140849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57183724A Pending JPS5974689A (en) | 1982-10-21 | 1982-10-21 | Closed type current introducing terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5974689A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005175123A (en) * | 2003-12-10 | 2005-06-30 | Central Res Inst Of Electric Power Ind | Current lead for superconducting coil |
| JP2012114150A (en) * | 2010-11-22 | 2012-06-14 | Taiyo Nippon Sanso Corp | Frp cryostat |
-
1982
- 1982-10-21 JP JP57183724A patent/JPS5974689A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005175123A (en) * | 2003-12-10 | 2005-06-30 | Central Res Inst Of Electric Power Ind | Current lead for superconducting coil |
| JP4494767B2 (en) * | 2003-12-10 | 2010-06-30 | 財団法人電力中央研究所 | Current leads for superconducting coils |
| JP2012114150A (en) * | 2010-11-22 | 2012-06-14 | Taiyo Nippon Sanso Corp | Frp cryostat |
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