JPS5933129Y2 - Bushings for wall penetration in cryogenic electrical equipment - Google Patents
Bushings for wall penetration in cryogenic electrical equipmentInfo
- Publication number
- JPS5933129Y2 JPS5933129Y2 JP1977051702U JP5170277U JPS5933129Y2 JP S5933129 Y2 JPS5933129 Y2 JP S5933129Y2 JP 1977051702 U JP1977051702 U JP 1977051702U JP 5170277 U JP5170277 U JP 5170277U JP S5933129 Y2 JPS5933129 Y2 JP S5933129Y2
- Authority
- JP
- Japan
- Prior art keywords
- cone
- cryogenic
- bushing
- flange
- tape
- 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
- Insulators (AREA)
Description
【考案の詳細な説明】
本考案は、極低温領域に電力を供給する極低温電気機器
における壁貫通用ブンシングに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to wall-piercing bunsing in cryogenic electrical equipment for supplying power to cryogenic areas.
従来、かかるフンシングとして電気的諸性質ノ良好なエ
ポキシ樹脂製プンシングが多用されているが、このエポ
キシ樹脂製ブンシングは金型による注型方式でしか製造
し得ないため、該注型方式の弱点である高価な金型の使
用が不可欠で、プンシングの製作費が高くつくという難
点を有しているばかりか、必要サイズ毎に金型が必要と
なり経済的にも不利である。Conventionally, epoxy resin bunsings with good electrical properties have been widely used as such bunsings, but since these epoxy resin bunsings can only be manufactured by casting using a mold, there are drawbacks to this casting method. It is necessary to use a certain expensive mold, which not only has the disadvantage of increasing the production cost of punching, but also requires a mold for each required size, which is economically disadvantageous.
本考案に係る極低温電気機器における壁貫通用ブッシン
グは、上述の点に鑑み、ブッシングコーンをゴムテープ
又はポリエチレンテープ等の絶縁テープの巻回により形
成することにより金型を不要化スると共に、上記ブッシ
ングコーンとこの周部に一部を埋設せるフランジ金具と
の接続を強固とすることにより耐気密性、耐気圧性を増
し、かつ電気特性に優れた安価なブッシングコーンを得
ようとすることを目的とし、その要旨は、中心導体上に
、被加硫ゴムテープ又は被架橋ポリエチレンテープから
構成される絶縁テープ巻回式防錘伏ブンシンクコーンを
設ケ、このブッシングコーンの周部に、上記コーンの周
部に埋設される円筒部と該円筒部の外周囲に設けられ極
低温領域と常温領域とを気密に区分する鍔部とを有する
フランジ金具を設け、上記フランジ金具の円筒部におけ
る常温領域側の端部には孔部又は段部な設けたことを特
徴とするものである。In view of the above-mentioned points, the wall-penetrating bushing for cryogenic electrical equipment according to the present invention eliminates the need for a mold by forming the bushing cone by winding an insulating tape such as rubber tape or polyethylene tape. By strengthening the connection between the bushing cone and the flange fitting that is partially buried around the bushing cone, we are trying to obtain an inexpensive bushing cone that increases airtightness and pressure resistance, and has excellent electrical properties. The purpose and gist of the bushing cone is to install an insulating tape-wrapped type anti-weight bunsink cone made of vulcanized rubber tape or crosslinked polyethylene tape on the center conductor, and to attach the above bushing cone to the periphery of this bushing cone. A flange fitting having a cylindrical part embedded in the circumference of the cylindrical part and a flange part provided around the outer periphery of the cylindrical part to airtightly divide a cryogenic region and a room temperature region, It is characterized by having a hole or a step at the side end.
以下に本考案を図示の実施例に基づいて詳細に説明する
。The present invention will be explained in detail below based on illustrated embodiments.
第１図は本考案を係る極低温電気機器における壁貫通用
ブッシングの実施例を示し、１は中心導体、２は中心導
体１上に未加硫ゴムテープ又は未架橋ポリエチレンテー
プの絶縁テープの巻回により形成した紡錘状のブッシン
グコーンであり、該ブッシングコーン２は、その周部に
後述するフランジ金具の一部を埋設した後、布テープ、
マイラーテープ等の熱膨張抑制層（図示せず）を介して
その周囲から加熱することにより加硫又は架橋されて形
成され得る。FIG. 1 shows an embodiment of a bushing for penetrating a wall in cryogenic electrical equipment according to the present invention, in which 1 is a center conductor, and 2 is an insulating tape, such as an unvulcanized rubber tape or an uncrosslinked polyethylene tape, wrapped around the center conductor 1. The bushing cone 2 is a spindle-shaped bushing cone formed by embedding a part of a flange metal fitting, which will be described later, in the circumference of the bushing cone 2, and then applying cloth tape,
It can be formed by being vulcanized or crosslinked by heating the periphery through a thermal expansion suppressing layer (not shown) such as Mylar tape.
３は円筒部４をブッシングコーン２に埋設し、円筒部４
の外周囲に設けた鍔部５により、極低温領域６と常温領
域７とを気密に区分する７ランジ金具である。3 embeds the cylindrical part 4 in the bushing cone 2, and the cylindrical part 4
This is a seven-lung fitting that airtightly divides a cryogenic region 6 and a normal temperature region 7 by a flange 5 provided around the outer periphery of the flange.
なお、８は冷媒、９は冷媒容器、１０は必要に応じて設
ける碍管、１１は保温材である。In addition, 8 is a refrigerant, 9 is a refrigerant container, 10 is an insulated pipe provided as necessary, and 11 is a heat insulating material.
ゴム又はプラスチック製のブッシングコーン２が低湿に
晒されると、コーン２が収縮して引張応力が作用し、フ
ランジ金具３の円筒部４との接着が剥離することになり
、気密が十分維持できなくなる。When the rubber or plastic bushing cone 2 is exposed to low humidity, the cone 2 contracts and tensile stress acts on it, causing the adhesive between the flange fitting 3 and the cylindrical portion 4 to separate, making it impossible to maintain sufficient airtightness. .
本考案ではこのために、コーン２に引張応力が作用して
も剥離し難いようにフランジ金具３を工夫している。To this end, the present invention devises the flange fitting 3 so that it is difficult to peel off even if tensile stress is applied to the cone 2.
即ち、第２図ａに示すフランジ金具３は、その円筒部４
における常温領域側の端部に多数個Ｑ透孔１２を穿孔し
、ゴム又はプラスチックをこれらの透孔１２内にも満た
すことにより接着を強固にするものである。That is, the flange fitting 3 shown in FIG. 2a has a cylindrical portion 4.
A large number of Q through-holes 12 are bored at the end on the room-temperature region side, and these through-holes 12 are also filled with rubber or plastic to strengthen the adhesion.
第２図すに示すフランジ金具３は、円筒部４における常
温領域側の端部の外周に条溝１３を設けたものであり、
第２図Ｃでは円筒部４における常温領域側の端部の内部
に、第２図ｄでは円筒部４における常温領域側の端部の
外周にそれぞれ突状１４を設けたものであって、ゴム又
はプラスチックとの接着力を増すためのものである。The flange metal fitting 3 shown in FIG. 2 has a groove 13 provided on the outer periphery of the end of the cylindrical portion 4 on the room temperature region side.
In FIG. 2C, a protrusion 14 is provided inside the end of the cylindrical portion 4 on the normal temperature region side, and in FIG. Or it is used to increase the adhesive strength with plastics.
以上説明したように、本考案に係る極低湿電気機器にお
ける壁貫通用ブッシングは、ブッシングコーンの周部に
設けるフランジ金具の円尚部における常温領域側の端部
に孔部又は段部な設け、その極低温側の端部には孔部又
は段部を設けない構成としたから、ブッシングコーンは
常温領域側にてフランジ金具と強固に接着一体化され極
低温の影響（極低温側に位置するコーン部分は極低温に
晒すれるため収縮が著しくこの部分で固定するとクラン
クを生じ易い）を受けることがなく、従って、ブッシン
グコーンにエポキシに比し収縮性の犬なるゴム、ポリエ
チレンを用いても気密性を損なう虞は全くない。As explained above, the wall-penetrating bushing for the ultra-low humidity electrical equipment according to the present invention has a hole or a stepped portion at the end on the normal temperature region side of the rounded part of the flange fitting provided around the bushing cone. Since the bushing cone is not provided with a hole or a step on the end on the cryogenic side, the bushing cone is firmly bonded and integrated with the flange fitting on the room temperature side, and is free from the effects of cryogenic temperatures (located on the cryogenic side). The bushing cone is exposed to extremely low temperatures, so it shrinks significantly and is susceptible to cranking if fixed in this area. There is no risk of compromising airtightness.
また、本考案ブンシングは、紡錘状ブッシングコーンを
被加硫ゴムテープ又は被架橋ホリエチレンテープによる
絶縁テープ巻回方式にて形成しているため、単にコーン
の周囲から加熱して加硫成形又は架橋成形するだけで製
作でき、前述したエポキシ樹脂注型式により構成する場
合のように高価な金型は不必要となり、大サイズ及び外
形が複雑な形状りブッシン・グコーンであっても甚だ安
価に製作し得る。In addition, in the bunsing of the present invention, the spindle-shaped bushing cone is formed using an insulating tape wrapping method using vulcanized rubber tape or cross-linked polyethylene tape, so it is simply heated from around the cone and vulcanized or cross-linked. This eliminates the need for expensive molds as in the case of construction using the epoxy resin casting method described above, and even bushing cones of large size and complex external shapes can be manufactured at an extremely low cost. .
しかも、ブッシングコーンにはエポキシ樹脂に比し安価
なゴム、ポリエチレンカ使用可能となるため経済的にも
有利である。Furthermore, it is economically advantageous because rubber and polyethylene, which are cheaper than epoxy resin, can be used for the bushing cone.
第１図は本考案に係る極低湿電気機器における壁貫通用
ブンシングの実施例を示す一部切欠正面図、第２図ａ−
ｄは本考案に用いるフランジ金具の実施例を示す一部切
欠正面図である。
符号１は導体、２はゴム又はポリエチレン製ブッシング
コーン、３はフランジ金具、４は円筒部、５は鍔部、６
は極低温領域、γは常温領域、１２は透孔、１３は条溝
、１４は突条である。Fig. 1 is a partially cutaway front view showing an embodiment of the wall penetrating bunsing in the ultra-low humidity electrical equipment according to the present invention, and Fig. 2 a-
d is a partially cutaway front view showing an embodiment of the flange fitting used in the present invention. 1 is a conductor, 2 is a rubber or polyethylene bushing cone, 3 is a flange fitting, 4 is a cylindrical part, 5 is a flange part, 6
is an extremely low temperature region, γ is a normal temperature region, 12 is a through hole, 13 is a groove, and 14 is a protrusion.
Claims (1)
ンテープかも構成される絶縁テープ巻回式紡錘状７”ン
シングコーンを設け、このブッシングコーンの周部に、
上記コーンの周部に埋設される円筒部と該円筒部の外周
囲に設けられ極低温領域と常温領域とを気密に区分する
鍔部とを有するフランジ金具を設け、上記７ランジ金具
の円筒部における常温領域側の端部には孔部又は段部な
設げたことな特徴とする極低温電気機器における壁貫通
用フッシング。An insulating tape-wrapped spindle-shaped 7" cone made of either vulcanized rubber tape or crosslinked polyethylene tape is provided on the center conductor, and around the bushing cone,
A flange metal fitting having a cylindrical part embedded in the circumferential part of the cone and a flange part provided around the outer periphery of the cylindrical part to airtightly divide a cryogenic region and a room temperature region, and the cylindrical part of the seven flange metal parts A wall penetrating hooking for cryogenic electrical equipment characterized by having a hole or a step at the end on the room temperature side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977051702U JPS5933129Y2 (en) | 1977-04-23 | 1977-04-23 | Bushings for wall penetration in cryogenic electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977051702U JPS5933129Y2 (en) | 1977-04-23 | 1977-04-23 | Bushings for wall penetration in cryogenic electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53146099U JPS53146099U (en) | 1978-11-17 |
| JPS5933129Y2 true JPS5933129Y2 (en) | 1984-09-17 |
Family
ID=28941534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977051702U Expired JPS5933129Y2 (en) | 1977-04-23 | 1977-04-23 | Bushings for wall penetration in cryogenic electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5933129Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5041115U (en) * | 1973-08-10 | 1975-04-25 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4718799U (en) * | 1971-04-01 | 1972-11-01 |
-
1977
- 1977-04-23 JP JP1977051702U patent/JPS5933129Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5041115U (en) * | 1973-08-10 | 1975-04-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53146099U (en) | 1978-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20040209025A1 (en) | Cold-shrinkable type rubber sleeve and method of manufacturing the same | |
| JPS5933129Y2 (en) | Bushings for wall penetration in cryogenic electrical equipment | |
| JP2601434Y2 (en) | Rubber mold stress cone molding die | |
| JP3059680B2 (en) | Method for forming composite insulator and manufacturing apparatus for composite insulator | |
| JPS6032508A (en) | Method of forming cable connector | |
| JPH0137834B2 (en) | ||
| JPS6328559Y2 (en) | ||
| JPS6111956Y2 (en) | ||
| JPS5853169A (en) | Lead wire device and method of producing same | |
| JPS6313667Y2 (en) | ||
| JPS59198817A (en) | Crosslinked rubber and plastic insulated cable connector | |
| JP2996999B2 (en) | Insulation reinforcement layer molding method for cable connection | |
| JPH0613581Y2 (en) | Silicone rubber composite heat-shrinkable tube | |
| JPS6016714B2 (en) | Method for forming insulated joints in cross-linked polyethylene power cables | |
| JPH09257181A (en) | Manufacture of saddle-shaped base body of saddle-shaped branch pipe | |
| JPS6030171B2 (en) | Method of forming plastic insulated power cable connections | |
| JPS5851624U (en) | CV cable connection part | |
| JPH0946116A (en) | Flexible antenna element | |
| JPH01177841A (en) | Coil for linear motor | |
| JPH0660125U (en) | Induction winding | |
| JPH0140575B2 (en) | ||
| JPH074041B2 (en) | Molding method for oil-tight mold such as cable end connection | |
| JPS6023475B2 (en) | Connection method of plastic insulated cable | |
| JPH0667086B2 (en) | Method for manufacturing insulating tube for connecting power cable | |
| JPS59198816A (en) | Method of forming cable connector |