JPS58144511A - Method of connecting crosslinked polyethylene insulated cable - Google Patents
Method of connecting crosslinked polyethylene insulated cableInfo
- Publication number
- JPS58144511A JPS58144511A JP56168304A JP16830481A JPS58144511A JP S58144511 A JPS58144511 A JP S58144511A JP 56168304 A JP56168304 A JP 56168304A JP 16830481 A JP16830481 A JP 16830481A JP S58144511 A JPS58144511 A JP S58144511A
- Authority
- JP
- Japan
- Prior art keywords
- polyolefin
- crosslinking agent
- layer
- semiconductive
- polyethylene insulated
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本楯明け、架橋化ポリエチレン絶縁ケーブルの接続方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting crosslinked polyethylene insulated cables.
この種ケーブルの接続には、絶縁テープ巻方式、モール
ド方式、プレハブ方式などがあるが、それが特に超高圧
クラスのケーブルの接続である場合には、信頼性、接続
部寸法の縮小化などからモールド方式が適用される。Connections for this type of cable include insulating tape wrapping, molding, and prefabricated methods, but especially when connecting ultra-high voltage class cables, there are concerns about reliability, reducing the size of the connection part, etc. Mold method is applied.
一方、モールド方式としては、ケーブル絶縁体と同材質
のテープを巻き、加熱モールド成形するものと、ケーブ
ル絶縁体と同材質の絶縁材料を押出機により押出成形す
るものとがあるが、押出機による押出成形は異物混入が
なく、従って超高圧クラスのケーブルの接続にはこの方
が適している。On the other hand, there are two molding methods: one is to wrap a tape made of the same material as the cable insulator and heat mold it, and the other is to extrude an insulating material made of the same material as the cable insulator using an extruder. Extrusion molding is free from contaminants and is therefore more suitable for connecting ultra-high voltage class cables.
まだ、上記絶縁材料としては、シラン架橋剤入り絶縁材
料と過酸化物架橋剤入り絶縁材料とがあるが、架橋処理
の簡便さからすれば、前者の方が良い。The above-mentioned insulating materials include an insulating material containing a silane crosslinking agent and an insulating material containing a peroxide crosslinking agent, but the former is better in terms of ease of crosslinking treatment.
しかしながら、絶縁材料としてシラン架橋剤入り材料を
用いた場合には、接続部絶縁体と当該絶縁体周上に設け
られる外部半導電層とを結着一体化することが難しいと
言う問題があった。However, when a material containing a silane crosslinking agent is used as an insulating material, there is a problem in that it is difficult to bond and integrate the connecting part insulator and the external semiconductive layer provided on the circumference of the insulator. .
本発明の目的は、前記した従来技術の欠点を解消し、シ
ラン架橋剤入り絶縁材料をもってケーブル接続部を製造
するに当り、接続部絶縁体と外部半導電層との結着一体
化を容易に行ない得る接続方法を提供することにある。An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to facilitate the bonding and integration of a connecting part insulator and an external semiconductive layer when manufacturing a cable connecting part using an insulating material containing a silane crosslinking agent. The purpose is to provide a connection method that can be used.
すなわち、本発明の要旨は、ケーブル導体接続部の周上
にシラン架橋剤入りポリオレフィンを成形する工程と、
上記シラン架橋剤入りポリオレフィン成形体の周上に過
酸化物架橋剤入りポリオレフィン層を介して半導電性ポ
リオレフィンの外部半導電層を施こす工程と、上記シラ
ン架橋剤入りポリオレフィン成形体、過酸化物架橋剤入
りポリオレフィン層および外部半導電層を不活性ガス雰
囲気中で架橋処理する工程とよりなる点にある。That is, the gist of the present invention is to form a polyolefin containing a silane crosslinking agent on the circumference of a cable conductor connection part,
A step of applying an outer semiconductive layer of semiconductive polyolefin on the periphery of the polyolefin molded article containing a silane crosslinking agent via a polyolefin layer containing a peroxide crosslinking agent; The method consists of a step of crosslinking the crosslinking agent-containing polyolefin layer and the outer semiconductive layer in an inert gas atmosphere.
次に、添付の図面を参照しながら本発明の一実施例を説
明すると、まず接続すべき架橋化ポリエチレン絶縁ケー
ブル１および１′の端部絶縁体を剥離して露出させた端
部導体１１および１１′を導体接続管２で接続し、更に
尚該接続管２および導体１１および１１′の周上に、半
導電性ポリオレフィンプレモールド、半導電性ポリオレ
フィン熱収縮チューブ、半導電性ポリオレフィンモール
ドなど任意の手段によって内部半導電層３を成形した後
、これらの周上に第１図に示す如く両ケーブル１および
１′の端部絶縁体にわたって金型５を取り付はる。ここ
で、金型５にはスクリュ一式押出機、ラム式押出機など
任意の押出機８と分離装置７が直結されていると共に、
その周上には加熱ヒータ９が設置されている。Next, an embodiment of the present invention will be described with reference to the accompanying drawings. First, the end conductors 11 and 10 are exposed by peeling off the end insulators of the crosslinked polyethylene insulated cables 1 and 1' to be connected. 11' is connected with a conductor connecting tube 2, and furthermore, on the circumference of the connecting tube 2 and the conductors 11 and 11', a semiconductive polyolefin pre-mold, a semiconductive polyolefin heat shrink tube, a semiconductive polyolefin mold, etc. After forming the inner semiconducting layer 3 by the means described above, a mold 5 is mounted over the end insulators of both cables 1 and 1' as shown in FIG. Here, an arbitrary extruder 8 such as a screw set extruder or a ram type extruder, and a separation device 7 are directly connected to the mold 5, and
A heater 9 is installed on the circumference thereof.
次に、上記加熱ヒータ９を作動させて金型５および両ケ
ーブル１および１′の接続部付近を所定の温度に予熱し
た後、所定の温度で押出機８から、それ自身の重合時に
シランを共重合したか、もしくはグラフトしたポリオレ
フィン材料４を金型５内に押し出し、更に当該金型５に
設けられたオーバーフロ一孔６より所定量オーバーフロ
ーさせた後、加圧状態でこれを冷却する。（第１図参照
）次に、以上ρようにして成形されたシラン架橋剤入り
ポリオレフィン成形体４の周上に別の金型５０を用いて
過酸化物架橋剤（たとえばＤｉ Ｑｕｍｙｌｐｅｒｏｘ
ｌｄｅあるいはり、５−４１ｍｅｔｈ５−４ｌ、５−ｄ
ｉ−（ｔ−ｂｕｔｙｌｐｅｒｏｘｙ）−ｈｅｘｙｎｅ−
などのジアルキルパーオキサイド）入りポリオレフィン
絶縁層１０を成形しＣ第２図参照）、引き続いてこの周
上に半導電性ポリオレフィンシートもしくは半導電性ポ
リオレフィン熱収縮チューブなどを用いて外部半導電層
１２を設ける。（第６図参照）しかる後、以上の接続部
を不活性ガス充填の加圧加熱金型（特に図示しない）内
にセットして、上記ポリオレフィン絶縁層１０を架橋処
理し、しかして上記外部半導電層１２を該絶縁層１０を
介して上記ポリオレフィン成形体４周上に結着一体化さ
せる。Next, the heater 9 is activated to preheat the mold 5 and the vicinity of the connection between the cables 1 and 1' to a predetermined temperature. The copolymerized or grafted polyolefin material 4 is extruded into a mold 5, overflowed by a predetermined amount through an overflow hole 6 provided in the mold 5, and then cooled under pressure. (See FIG. 1) Next, a peroxide crosslinking agent (for example, Di Qumylperox
lde orori, 5-41meth5-4l, 5-d
i-(t-butylperoxy)-hexyne-
A polyolefin insulating layer 10 containing a dialkyl peroxide (e.g., dialkyl peroxide such as establish. (See Fig. 6) Thereafter, the above connection part is set in a pressurized heating mold (not particularly shown) filled with an inert gas, and the polyolefin insulating layer 10 is crosslinked, and the outer half is crosslinked. A conductive layer 12 is bonded and integrated onto the periphery of the polyolefin molded body 4 via the insulating layer 10.
さて、斯様にして遂行される本実施例接続方法によれば
、シラン架橋剤入りポリオレフィン成形体４上への外部
半導電層１２の形成を過酸化物架橋剤入りポリオレフィ
ン絶縁層１０を介して行なうものであることから、従来
難しいとされていた上記成形体４と外部半導電層１２と
の結着一体化性
が容易にない得る。According to the connection method of the present embodiment carried out in this manner, the outer semiconductive layer 12 is formed on the polyolefin molded body 4 containing a silane crosslinking agent through the polyolefin insulating layer 10 containing a peroxide crosslinking agent. Therefore, the bonding and integration of the molded body 4 and the outer semiconducting layer 12, which has been considered difficult in the past, can be easily achieved.
△
言うまでもなく、この種接続部において上記成形体４と
外部半導電層１２とを確実に結着一体化できなければ、
当該部分においてコロナ放電を起こし易く、従って信頼
性に欠けることとなり、とても超高圧クラスのケーブル
接続などに適用できるものではない。△ Needless to say, if the molded body 4 and the external semiconductive layer 12 cannot be reliably bonded and integrated in this type of connection part,
Corona discharge is likely to occur in this part, resulting in a lack of reliability, and it cannot be applied to ultra-high voltage class cable connections.
しかるに、本発明接続方法によって製造される接続部に
よれば、前記の通り成形体４と外部半導電層１２とは確
実に結着一体化されており、従って超高圧クラスのケー
ブルの接続用として正にうってつけである。However, according to the connection part manufactured by the connection method of the present invention, the molded body 4 and the outer semiconducting layer 12 are reliably bonded and integrated as described above, and therefore, it is suitable for connection of ultra-high voltage class cables. It's perfect.
第１〜３図は、本発明架橋化ポリエチレン絶縁ケーブル
の接続方法の一実施例を説明する図である。
１．１’：架橋化ポリエチレン絶縁ケーブル、２：導体
接続管、６：内部半導電層、
４ニジラン架橋剤入りポリオレフィン成形体、５．５０
：金型、６：オーバーフロ一孔、７：分離装置、８：押
出機、９：加熱ヒータ、１０：過酸化物架橋剤入りポリ
オレフィン絶縁層、１１．１１’：導体、１２：外部半
導電層。1 to 3 are diagrams illustrating an embodiment of the method for connecting a crosslinked polyethylene insulated cable of the present invention. 1.1': Crosslinked polyethylene insulated cable, 2: Conductor connecting tube, 6: Internal semiconductive layer, 4 Polyolefin molded body containing Nijiran crosslinking agent, 5.50
: Mold, 6: Overflow hole, 7: Separation device, 8: Extruder, 9: Heater, 10: Polyolefin insulation layer containing peroxide crosslinking agent, 11.11': Conductor, 12: External semiconductor layer.
Claims (1)
ポリオレフィンを成形する工程と、上記シラン架橋剤入
りポリオレフィン成形体の周上に過酸化物架橋剤入りポ
リオレフィン層を介して半導電性ポリオレフィンの外部
半導電層を施こす工程と、上記シラン架橋剤入りポリオ
レフィン成形体、過酸化物架橋剤入りポリオレフィン層
および半導電性ポリオレフィンの外部半導電層を不活性
ガス雰囲気中で架橋処理する工程とよりなることを特徴
とする架橋化ポリエチレン絶縁ケーブルの接続方法。
゛1. Molding a polyolefin containing a silane crosslinking agent on the circumference of the conductor connection part of the cable, and molding a semiconductive polyolefin on the circumference of the polyolefin containing a silane crosslinking agent via a polyolefin layer containing a peroxide crosslinking agent. A step of applying an outer semiconductive layer, and a step of crosslinking the polyolefin molded article containing a silane crosslinking agent, the polyolefin layer containing a peroxide crosslinking agent, and the outer semiconductive layer of the semiconductive polyolefin in an inert gas atmosphere. A method for connecting a cross-linked polyethylene insulated cable, characterized in that:
゛
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56168304A JPS58144511A (en) | 1981-10-21 | 1981-10-21 | Method of connecting crosslinked polyethylene insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56168304A JPS58144511A (en) | 1981-10-21 | 1981-10-21 | Method of connecting crosslinked polyethylene insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58144511A true JPS58144511A (en) | 1983-08-27 |
Family
ID=15865532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56168304A Pending JPS58144511A (en) | 1981-10-21 | 1981-10-21 | Method of connecting crosslinked polyethylene insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58144511A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60198074A (en) * | 1984-03-19 | 1985-10-07 | 三菱電線工業株式会社 | Device for molding reinforced insulator of cable connector |
| JPS61116785A (en) * | 1984-11-01 | 1986-06-04 | ノーザン・テレコム・リミテツド | Method and container for capsuling product |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49111980A (en) * | 1973-02-27 | 1974-10-24 | ||
| JPS50152293A (en) * | 1974-05-29 | 1975-12-08 |
-
1981
- 1981-10-21 JP JP56168304A patent/JPS58144511A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49111980A (en) * | 1973-02-27 | 1974-10-24 | ||
| JPS50152293A (en) * | 1974-05-29 | 1975-12-08 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60198074A (en) * | 1984-03-19 | 1985-10-07 | 三菱電線工業株式会社 | Device for molding reinforced insulator of cable connector |
| JPH0439192B2 (en) * | 1984-03-19 | 1992-06-26 | ||
| JPS61116785A (en) * | 1984-11-01 | 1986-06-04 | ノーザン・テレコム・リミテツド | Method and container for capsuling product |
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