JPH06187860A - Method for treating surface of cable insulator - Google Patents
Method for treating surface of cable insulatorInfo
- Publication number
- JPH06187860A JPH06187860A JP35526592A JP35526592A JPH06187860A JP H06187860 A JPH06187860 A JP H06187860A JP 35526592 A JP35526592 A JP 35526592A JP 35526592 A JP35526592 A JP 35526592A JP H06187860 A JPH06187860 A JP H06187860A
- Authority
- JP
- Japan
- Prior art keywords
- vessel
- cable insulator
- cable
- vacuum
- valve
- 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
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、主として電力ケーブ
ルに用いられるＣＶケーブルの中間及び端末の接続部に
おけるケーブル絶縁体の表面処理方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment method for a cable insulator in a connection portion of an intermediate and a terminal of a CV cable mainly used for a power cable.
【０００２】[0002]
【従来の技術】ケーブル１の接続に際し、図３に示すよ
うに導体２同士を導体接続管３で接続し、ケーブル絶縁
体４をストレスコーン（プレモールド絶縁体）５に挿入
し、全体を絶縁成形物（エポキシユニット）６でおおっ
ていた。ストレスコーン５への挿入に際しては、ケーブ
ル絶縁体４の表面にシリコーンオイルを塗布し、ストレ
スコーン５への挿入を容易にするとともに両者の界面に
空隙を発生させないようにしていた。また、シリコーン
オイル塗布前に、凹凸を小さくするため、ケーブル絶縁
体４の表面をガラス削りあるいはサンドペーパー等によ
り平滑にすることが行なわれていた。2. Description of the Related Art When connecting a cable 1, conductors 2 are connected by a conductor connecting pipe 3 as shown in FIG. 3, a cable insulator 4 is inserted into a stress cone (premolded insulator) 5, and the whole is insulated. It was covered with the molded product (epoxy unit) 6. Upon insertion into the stress cone 5, silicone oil was applied to the surface of the cable insulator 4 to facilitate insertion into the stress cone 5 and prevent voids from being formed at the interface between the two. In addition, before applying silicone oil, the surface of the cable insulator 4 was ground by glass or smoothed by sandpaper or the like in order to reduce irregularities.
【０００３】[0003]
【発明が解決しようとする課題】ケーブル絶縁体４の材
料としてはポリエチレンが一般的に使用されているが、
ポリエチレンとシリコーンオイルとはヌレ性が悪く、ポ
リエチレン表面のわずかな凹凸にシリコーンオイル８が
入り込まず、図４に示すような空隙（泡）７が残ってし
まっていた。このような空隙７が残ったままケーブル１
を接続すると、電気的信頼性が劣ってしまう。Polyethylene is generally used as the material of the cable insulator 4, but
Polyethylene and silicone oil had poor wettability, and the silicone oil 8 did not enter into the slight irregularities on the polyethylene surface, leaving voids (bubbles) 7 as shown in FIG. Cable 1 with such a gap 7 left
, The electrical reliability will be poor.
【０００４】そこで、この発明は、ストレスコーンへ挿
入後、ケーブル絶縁体との界面に空隙が残らないように
し、電気的信頼性を高めたケーブル絶縁体の表面処理方
法を提供することを目的とするものである。Therefore, an object of the present invention is to provide a surface treatment method for a cable insulator in which no void is left at the interface with the cable insulator after it is inserted into a stress cone to improve electrical reliability. To do.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
め、この発明は、真空容器に処理すべきケーブル絶縁体
を挿入し密封状態を保つ工程と、真空容器内の気体を吸
引する工程と、吸引後に真空容器内のケーブル絶縁体の
表面にシリコーンオイルを塗布する工程とから成るもの
である。To achieve the above object, the present invention comprises the steps of inserting a cable insulator to be processed into a vacuum container and maintaining a sealed state, and sucking gas in the vacuum container. After the suction, the step of applying silicone oil to the surface of the cable insulator in the vacuum container is performed.
【０００６】[0006]
【作用】真空容器内の気体を吸引することで、ケーブル
絶縁体表面に空気が残ることはなくなる。この状態でケ
ーブル絶縁体表面にシリコーンオイルを塗布するので空
隙（泡）が発生しない。By sucking the gas in the vacuum container, no air remains on the surface of the cable insulator. Since silicone oil is applied to the surface of the cable insulator in this state, no void (bubble) is generated.
【０００７】[0007]
【実施例】以下に、この発明の好適な実施例を図面を参
照にして説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.
【０００８】図１では、真空容器１０の両端にゴムパッ
キン１１を設け、吸引口１２と供給口１３をそれぞれ設
けてある。吸引口１２にはバルブ１４を設けこのバルブ
１４に図示しない配管を接続し、この配管を吸引器（図
示せず）に接続してある。また、供給口１３に設けたバ
ルブ１５にも配管を接続し、この配管はシリコーンオイ
ル供給器（図示せず）に接続してある。ケーブル１は導
体２とケーブル絶縁体４及びケーブル外導９を有し、少
なくともケーブル絶縁体４を真空容器１０に挿入する。
ゴムパッキン１１の個所でケーブル１の真空容器１０内
の部分と容器１０外の部分とが通気せず、容器１０内は
密封されることとなる。真空容器１０内に挿入されるケ
ーブル絶縁体４の表面は予めガラス削り若しくはサンド
ペーパー等により平滑にされている。In FIG. 1, rubber packings 11 are provided at both ends of the vacuum container 10, and a suction port 12 and a supply port 13 are provided respectively. A valve 14 is provided at the suction port 12, a pipe (not shown) is connected to the valve 14, and the pipe is connected to a suction device (not shown). A pipe is also connected to the valve 15 provided at the supply port 13, and this pipe is connected to a silicone oil supplier (not shown). The cable 1 has a conductor 2, a cable insulator 4 and a cable outer conductor 9, and at least the cable insulator 4 is inserted into a vacuum container 10.
At the location of the rubber packing 11, the portion of the cable 1 inside the vacuum container 10 and the portion outside the container 10 do not vent, and the inside of the container 10 is sealed. The surface of the cable insulator 4 inserted into the vacuum container 10 is ground in advance or smoothed by sandpaper or the like.
【０００９】図１に示すようにケーブル１を真空容器１
０にセットしたならば、吸引器を作動させて真空容器１
０内の空気をバルブ１４をあけて吸引する。このとき異
物等がケーブル絶縁体４に付着していても吸引されるこ
ととなる。As shown in FIG. 1, a cable 1 is connected to a vacuum container 1
If set to 0, activate the aspirator to activate vacuum container 1
The air inside 0 is opened by opening the valve 14. At this time, even if foreign matter or the like adheres to the cable insulator 4, it will be sucked.
【００１０】真空容器１０内を真空状態若しくは空気の
少ない状態にしたら、バルブ１４を閉じ、図２に示すよ
うに、バルブ１５をあけてシリコーンオイルを供給口１
３から供給してケーブル絶縁体４の表面に塗布する。シ
リコーンオイル塗布時には真空容器１０内は真空若しく
はそれに近い状態であるため、空隙（泡）が生ずること
はない。ケーブル絶縁体４に塗布するシリコーンオイル
は、５０〜１０，０００Ｃｓｔの粘度のシリコーンオイ
ルが好適に用いられる。供給口１３から注入するシリコ
ーンオイル１３は、予め加温して粘度を下げると空隙の
除去効果が大きくなる。或は真空容器１０内にヒーター
等を設けて加温できる構造とすることもできる。When the inside of the vacuum container 10 is evacuated or the amount of air is small, the valve 14 is closed, and as shown in FIG. 2, the valve 15 is opened to supply the silicone oil to the inlet 1.
3 and apply it to the surface of the cable insulator 4. When the silicone oil is applied, the inside of the vacuum container 10 is in a vacuum or in a state close to it, so that no void (bubble) is generated. The silicone oil applied to the cable insulator 4 is preferably a silicone oil having a viscosity of 50 to 10,000 Cst. If the silicone oil 13 injected from the supply port 13 is heated in advance to reduce the viscosity, the effect of removing voids becomes large. Alternatively, the vacuum container 10 may be provided with a heater or the like so that the vacuum container 10 can be heated.
【００１１】真空容器１０は、ステンレス或はガラス，
さらには透明なプラスチック等の材料が好適に使用でき
る。また、ゴムパッキン１１に代えて、他のシール手段
を用いることも勿論可能である。The vacuum vessel 10 is made of stainless steel or glass,
Furthermore, materials such as transparent plastic can be preferably used. Further, it is of course possible to use other sealing means instead of the rubber packing 11.
【００１２】図１に示すように吸引器により真空容器１
０内の空気を吸引する前に、真空容器１０内を乾燥した
ＳＦ6 （６フッ化用ガス），ＨＥガス，Ｎ2 ガス等を注
入しておき、これによりケーブル絶縁体４の表面を乾燥
させておいてもよい。これらのガスを真空容器１０内に
充填することにより容器内の空気とガスとが置換され
る。真空容器１０にガスを充填した後に吸引器によりこ
れらガスを吸引し、その後シリコーンオイルの注入を行
なってもよい。As shown in FIG. 1, a vacuum container 1 is provided by a suction device.
Before sucking the air in 0, dry SF 6 (gas for hexafluoride), HE gas, N 2 gas, etc. are injected into the vacuum container 10 to dry the surface of the cable insulator 4. You may leave it. By filling the vacuum container 10 with these gases, the air in the container is replaced with the gas. After filling the vacuum container 10 with gas, these gases may be sucked by a suction device, and then silicone oil may be injected.
【００１３】[0013]
【発明の効果】以上説明したように、この発明によれ
ば、真空容器に処理すべきケーブル絶縁体を挿入して密
封状態を保つ工程と、真空容器内の気体を吸引する工程
と、吸引後に真空容器内のケーブル絶縁体の表面にシリ
コーンオイルを塗布する工程とから成るので、シリコー
ンオイル塗布後にケーブル絶縁体の表面に空隙（泡）が
残存するおそれがなくなる。また、真空容器内でケーブ
ル絶縁体に手を触れずにシリコーンオイルを塗布できる
ので、異物が入り込むこともない。また、ケーブル絶縁
体を加温する必要もないので、加温による劣化も生じな
い。また、ＳＦ6 ガス等を空気と置換した後に、吸引器
で真空容器内のガスを吸引する場合には、少量のガスが
残っても空気が残るよりも弊害は少ない。As described above, according to the present invention, the steps of inserting the cable insulator to be processed into the vacuum container to maintain the sealed state, the step of sucking the gas in the vacuum container, and the step of sucking the gas in the vacuum container are performed. Since the step of applying silicone oil to the surface of the cable insulator in the vacuum container is performed, there is no possibility that voids (bubbles) remain on the surface of the cable insulator after application of silicone oil. Further, since the silicone oil can be applied in the vacuum container without touching the cable insulator, foreign matter does not enter. Further, since it is not necessary to heat the cable insulator, deterioration due to heating does not occur. Further, when the gas in the vacuum container is sucked by the suction device after substituting the SF 6 gas or the like with air, even if a small amount of gas remains, the harmful effect is less than that of air remaining.
【図１】真空容器内の空気を吸引する状態を示す断面
図。FIG. 1 is a cross-sectional view showing a state of sucking air in a vacuum container.
【図２】真空状態でシリコーンオイルを塗布する状態を
示す断面図。FIG. 2 is a cross-sectional view showing a state in which silicone oil is applied in a vacuum state.
【図３】ケーブル接続部の断面図。FIG. 3 is a sectional view of a cable connecting portion.
【図４】シリコーンオイル塗布後の空隙が残った状態の
説明図。FIG. 4 is an explanatory diagram of a state in which voids remain after application of silicone oil.
１ ケーブル ４ ケーブル絶縁体 １０ 真空容器 1 cable 4 cable insulator 10 vacuum vessel
───────────────────────────────────────────────────── フロントページの続き (72)発明者 高橋 功 東京都江東区木場１丁目５番１号 株式会 社フジクラ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Takahashi 1-5-1, Kiba, Koto-ku, Tokyo Inside Fujikura Ltd.
Claims (1)
（４）をストレスコーン（５）に挿入する前のストレス
コーン挿入部分のケーブル絶縁体（４）の表面処理方法
であって、 真空容器（１０）に処理すべきケーブル絶縁体を挿入し
密封状態を保つ工程と、 真空容器（１０）内の気体を吸引する工程と、 吸引後に真空容器（１０）内のケーブル絶縁体（４）の
表面にシリコーンオイルを塗布する工程とから成るケー
ブル絶縁体の表面処理方法。1. A surface treatment method for a cable insulator (4) at a stress cone insertion portion before the cable insulator (4) is inserted into a stress cone (5) at the time of connecting a cable, the vacuum container (10). A step of inserting a cable insulator to be treated in the above to maintain a sealed state, a step of sucking gas in the vacuum container (10), and a silicone on the surface of the cable insulator (4) in the vacuum container (10) after suction A method for surface treatment of a cable insulator, which comprises a step of applying oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35526592A JPH06187860A (en) | 1992-12-17 | 1992-12-17 | Method for treating surface of cable insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35526592A JPH06187860A (en) | 1992-12-17 | 1992-12-17 | Method for treating surface of cable insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06187860A true JPH06187860A (en) | 1994-07-08 |
Family
ID=18442931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35526592A Pending JPH06187860A (en) | 1992-12-17 | 1992-12-17 | Method for treating surface of cable insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06187860A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030049016A (en) * | 2001-12-13 | 2003-06-25 | 엘지전선 주식회사 | Suction wiper for eliminating water on insulated wire and water eliminating method of insulated wire using the same |
| KR100468401B1 (en) * | 2003-02-22 | 2005-01-27 | 엘지전선 주식회사 | Open-Closing type Suction Wiper Using a Vacuum Pump |
| KR100577114B1 (en) * | 2005-04-07 | 2006-05-04 | 엘에스전선 주식회사 | Water wiper for cable wire |
| CN106847422A (en) * | 2017-02-28 | 2017-06-13 | 天津大学 | Direct current cables annex silicon rubber insulation surface molecules structure regulating device and method |
-
1992
- 1992-12-17 JP JP35526592A patent/JPH06187860A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030049016A (en) * | 2001-12-13 | 2003-06-25 | 엘지전선 주식회사 | Suction wiper for eliminating water on insulated wire and water eliminating method of insulated wire using the same |
| KR100468401B1 (en) * | 2003-02-22 | 2005-01-27 | 엘지전선 주식회사 | Open-Closing type Suction Wiper Using a Vacuum Pump |
| KR100577114B1 (en) * | 2005-04-07 | 2006-05-04 | 엘에스전선 주식회사 | Water wiper for cable wire |
| CN106847422A (en) * | 2017-02-28 | 2017-06-13 | 天津大学 | Direct current cables annex silicon rubber insulation surface molecules structure regulating device and method |
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