JPS5947781A - Current introduction terminal - Google Patents
Current introduction terminalInfo
- Publication number
- JPS5947781A JPS5947781A JP15677282A JP15677282A JPS5947781A JP S5947781 A JPS5947781 A JP S5947781A JP 15677282 A JP15677282 A JP 15677282A JP 15677282 A JP15677282 A JP 15677282A JP S5947781 A JPS5947781 A JP S5947781A
- Authority
- JP
- Japan
- Prior art keywords
- tapered
- insulation cylinder
- lead wire
- current
- seal
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
- H01B17/30—Sealing
- H01B17/303—Sealing of leads to lead-through insulators
- H01B17/308—Sealing of leads to lead-through insulators by compressing packing material
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
Description
【発明の詳細な説明】
Ｃ発明の属する技術分野」
この発明は′１１Ｌ流尋人端子の絶縁物の構造に関する
。DETAILED DESCRIPTION OF THE INVENTION C. Technical Field to Which the Invention Pertains This invention relates to the structure of an insulator for a '11L terminal.
［従来技術とその問題点］
第１図は、クライオスタット１に設置された超電導マグ
ネット２の概略を示す。超電導マグネット２から電流リ
ード線３が出ておシ端子９を通って大気側７へ導き出さ
れている。クライオスタット内にはヘリウムが入ってお
シ、液相５と気相６に分かれている。超電導マグネット
２は液体ヘリウム５に浸漬されている。電流導入端子９
は、ヘリウムガス中６（！：大気中９に存在している０
破線で囲まれた電流導入端子Ｅの拡大を第２図に示す。[Prior art and its problems] FIG. 1 schematically shows a superconducting magnet 2 installed in a cryostat 1. A current lead wire 3 comes out from the superconducting magnet 2 and is led out to the atmosphere side 7 through a terminal 9. The cryostat contains helium, which is divided into a liquid phase 5 and a gas phase 6. The superconducting magnet 2 is immersed in liquid helium 5. Current introduction terminal 9
is 6 in helium gas (!: 0 present in the atmosphere 9
FIG. 2 shows an enlarged view of the current introduction terminal E surrounded by broken lines.
電流リード線の素線１８は、ｊＵ電流導入端子の素線ハ
ンダ付金具１２のところでハンダ付される。電流導入端
子９の絶縁物］０の形状は側面から見ると波釘たせＣあ
る。これは電流リード線の素線部２２と接す１し側のク
ライオスタット８さの間にかかるル王に対１−絶縁破壊
しないように沿面距離を長くとる必要１％からである。The strand 18 of the current lead wire is soldered at the strand soldering fitting 12 of the jU current introduction terminal. The shape of the insulator of the current introduction terminal 9 is a wavy C shape when viewed from the side. This is because it is necessary to provide a long creepage distance of 1% to avoid dielectric breakdown between the wire portion 22 of the current lead wire and the cryostat 8 on the first side in contact with the current lead wire.
しか１〜．５４￥３，４図で示すようにヘリウムの破壊
電圧はガスになるき極端に低下し、′ｔ＆権間距Ｐｉ（
＃を長くきっても上昇しない。また、ヘリウムガスの破
壊電圧は大気中と比べても低い。このため第２図に示す
従来形の電流導入端子９ではヘリウムガス側６０沿面距
離（Ａ 、 Ｊ３ 、 ｃ ）を長くしても非常に低い
電圧で絶縁破壊を起こ１〜た。その結果、超電導マグネ
ットの運転制＃、計測等は困難をきわめた。Only 1～. 54￥3,4 As shown in the figure, the breakdown voltage of helium decreases extremely as it becomes a gas, and the distance between 't & power distance Pi (
Even if # is left out for a long time, it does not rise. Furthermore, the breakdown voltage of helium gas is lower than that in the atmosphere. For this reason, in the conventional current introducing terminal 9 shown in FIG. 2, dielectric breakdown occurred at a very low voltage even if the creepage distance (A, J3, c) of the helium gas side 60 was increased. As a result, superconducting magnet operation control and measurement became extremely difficult.
［発明の目的コ
本発明は上記のような欠点を取除き、従来に比ベヘリウ
ムガス中でも絶縁耐圧の高い電流導入端子を提供するも
のである。[Object of the Invention] The present invention eliminates the above-mentioned drawbacks and provides a current introduction terminal which has a higher dielectric strength even in behelium gas than the conventional terminal.
Ｃ発明の概要］ 本発明は電流導入端子の絶縁物の加工に関する。Summary of invention C] The present invention relates to the processing of insulators for current introduction terminals.
この絶縁物にはテーバ状のねじが切っであるシール材が
付属する。’ｒ（（流リード線は、このシール利により
被覆部ごとシールされるので、ヘリウムガス中の絶縁部
ＦＥは、大気中の絶縁部沿面距離絶縁耐圧まで向上する
。A sealing material having a tapered thread is attached to this insulator. 'r((The current lead wire is sealed together with the sheathing by this sealing effect, so the insulation part FE in helium gas is improved to the creepage distance dielectric strength voltage of the insulation part in the atmosphere.
［発明の効果］
本発明に係るテーパシール付電流導入端子を用いればヘ
リウムガス中でも絶縁耐圧の高い電流導入端子が使用で
きる。[Effects of the Invention] By using the current introducing terminal with a tapered seal according to the present invention, a current introducing terminal with high dielectric strength can be used even in helium gas.
［発明の実施例］
第５図は、本発明によるテーバシール付ｆａｔ流導入端
子１３である。テーパシール１５は絶縁筒２４にねじ切
りしであるテーバ状のめねじ１４によって取付けられる
ようになっており、電流リード線３．４が通れるような
穴がおいている。超電導マグネット等から引出されたリ
ード線３，４は、テーパシールＪ５を通１〜、Ｉヱ流尋
人端子の絶縁筒２・１を通って大気側７へ出される。テ
ーバシール利１５は絶縁節回の材質よりもやわらかい材
質でできている。[Embodiments of the Invention] FIG. 5 shows a fat flow introduction terminal 13 with a Taber seal according to the present invention. The tapered seal 15 is attached to the insulating tube 24 by a tapered internal thread 14, which has a hole through which the current lead wire 3.4 can pass. The lead wires 3 and 4 drawn out from the superconducting magnet etc. pass through the taper seal J5 1 to 1, and pass through the insulating tubes 2 and 1 of the I-stream terminal to the atmosphere side 7. The taber seal 15 is made of a softer material than the material of the insulating joint.
たとえば、絶縁筒の材質（−よＦ ｌ’？、 Ｐ （エ
ポキシガラスクロス積層板）（！：ｊ″る吉、テーバノ
ール材はテフロンである。For example, the material of the insulating tube (-YoF l'?, P (epoxy glass cloth laminate) (!:j'', Thebanol material is Teflon).
電流リード線を通１〜だテーパシール材１５を絶縁筒討
にねじ込むと、リード線吉シール＋Ａ’１７それに絶縁
筒１６間のすき間は密閉されも。これは、シール材１５
及び絶縁筒加がテーバ状になって訃り、牛だシール材１
５が絶縁筒ｔよシやわらかい材質でできているだめであ
る。ヘリウムガス側６の素線２２は密閉されると吉によ
り大気中の破壊電圧はヘリウムガスの耐圧よりも高いこ
とから、本発明の電流導入端子］３は大気側絶縁部２１
の沿面距離ＦＧの絶縁耐ＩＥマで向上することになる。When the current lead wire is passed through and the taper sealing material 15 is screwed into the insulating tube, the gap between the lead wire Yoshi seal +A'17 and the insulating tube 16 is sealed. This is seal material 15
And the insulating sleeve became tapered and collapsed, and the sealing material 1
5 is a cap made of a softer material than the insulating tube T. If the wire 22 on the helium gas side 6 is sealed, the breakdown voltage in the atmosphere is higher than the withstand voltage of helium gas.
The dielectric strength IE of the creepage distance FG will be improved.
第１図は、クライオスタットに超電導マグネットを設置
し、そとからリード線を電流導入端子を通して大気（ｉ
’ｊｌｌへ取出した状態を示す概略断面図、第２図は、
第１図の破線円内の電流導入端子を拡大した断面図、第
３図は、ヘリウムの絶縁破壊電圧の温度依存性を示す特
性図、第４図は、ヘリウムの絶縁破壊電圧の電イベ間距
離依存性を示す特性図、第５図は、本発明によるテーパ
シール付シ流導入端子を示す１所面図である。
３・・・リード線（ヘリウムガス側）、４・・・ 〃
（大気ｆｌＩＩ ） 。
８・・・クライオスタット側電流導入端子取（；Ｊ ｔ
ｅｌζ、］０・・・絶縁筒、
１３・・・テーバシール付１ｌＪｆ流導入端子、１４・
・・テーパめねじ１．
１５・・・テーパシール
加・・ヘリウムガス側電流導入端子絶縁部。
２１・・・大気側電流導入端子絶縁部、ｎ・・・ヘリウ
ムガス側リード線素線、ｎ・・・電流導入端子取付金具
、
冴・・・°電流導入端子の絶縁部〇
３７
第２図
第３図
第４図
墾閏ＷＪ４ｇＬ口ｍ〕In Figure 1, a superconducting magnet is installed in the cryostat, and the lead wire is passed through the current introduction terminal and connected to the atmosphere (i.e.
Figure 2 is a schematic cross-sectional view showing the state taken out to 'jll.
Fig. 3 is a characteristic diagram showing the temperature dependence of the dielectric breakdown voltage of helium. FIG. 5, a characteristic diagram showing the distance dependence, is a top view showing a flow introduction terminal with a tapered seal according to the present invention. 3... Lead wire (helium gas side), 4... 〃
(Atmospheric flII). 8...Cryostat side current introduction terminal handle (;J t
elζ, ]0... Insulating tube, 13... 1lJf flow introduction terminal with Taber seal, 14...
・Tapered female thread 1. 15...Taper sealing...Helium gas side current introduction terminal insulation part. 21... Atmospheric side current introduction terminal insulated part, n... Helium gas side lead wire strand, n... Current introduction terminal mounting bracket, Sae... ° Insulated part of current introduction terminal 〇37 Figure 2 Figure 3 Figure 4 Kenten WJ4gL mouth m]
Claims (1)
付けられるようになっているテーバ形の７−ル材で、リ
ード線をリード線の被覆部からシールすることにより、
ＩｊＩ８Ｒ耐圧の低いガス側の素線を密閉（〜で絶縁耐
圧を向上させるとＬを特徴とした電流導入端子・、By sealing the lead wire from the sheathing part of the lead wire with a taber-shaped 7-ru material that is designed to be installed inside the insulating cylinder of the current introduction terminal on the gas side with low dielectric strength,
IjI8R Sealing the strands on the gas side with low withstand voltage (Improving the withstand voltage with...
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15677282A JPS5947781A (en) | 1982-09-10 | 1982-09-10 | Current introduction terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15677282A JPS5947781A (en) | 1982-09-10 | 1982-09-10 | Current introduction terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5947781A true JPS5947781A (en) | 1984-03-17 |
Family
ID=15634973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15677282A Pending JPS5947781A (en) | 1982-09-10 | 1982-09-10 | Current introduction terminal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5947781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63302758A (en) * | 1986-07-03 | 1988-12-09 | Toshiba Corp | Superconductive rotor |
| GB2521129A (en) * | 2013-12-10 | 2015-06-17 | Siemens Plc | A current feed-through |
-
1982
- 1982-09-10 JP JP15677282A patent/JPS5947781A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63302758A (en) * | 1986-07-03 | 1988-12-09 | Toshiba Corp | Superconductive rotor |
| GB2521129A (en) * | 2013-12-10 | 2015-06-17 | Siemens Plc | A current feed-through |
| GB2521129B (en) * | 2013-12-10 | 2015-12-09 | Siemens Plc | A current feed-through |
| US10340068B2 (en) | 2013-12-10 | 2019-07-02 | Siemens Healthcare Limited | Current feed-through |
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