JPH0125287B2 - - Google Patents
Info
- Publication number
- JPH0125287B2 JPH0125287B2 JP56086353A JP8635381A JPH0125287B2 JP H0125287 B2 JPH0125287 B2 JP H0125287B2 JP 56086353 A JP56086353 A JP 56086353A JP 8635381 A JP8635381 A JP 8635381A JP H0125287 B2 JPH0125287 B2 JP H0125287B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cable
- connection
- connection part
- metal
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 239000011358 absorbing material Substances 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 38
- 238000009413 insulation Methods 0.000 description 5
- 239000011247 coating layer Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000006650 Syzygium cordatum Nutrition 0.000 description 1
- 240000005572 Syzygium cordatum Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Cable Accessories (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は水の浸入を遮断する電力ケーブル接続
部に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field] The present invention relates to power cable connections that block water ingress.
ケーブル内に水が浸入するのを防止するために
ケーブル接続部においても浸水防止をする必要が
あるが、従来の架橋ポリエチレン電力ケーブル等
の接続部は、ケーブル導体接続部とその両側の架
橋ポリエチレン絶縁体とにまたがつてゴムまたは
プラスチツク製絶縁筒からなる絶縁補強体を設け
その上に防水テープを巻いていた。
In order to prevent water from entering the cable, it is necessary to prevent water from entering the cable at the cable connection, but conventional cross-linked polyethylene power cable connections are made using cross-linked polyethylene insulation at the cable conductor connection and on both sides. An insulating reinforcing body consisting of a rubber or plastic insulating tube was provided across the body, and waterproof tape was wrapped on top of the insulating reinforcing body.
またケーブル接続部に防水テープを用いる例と
しては、ケーブルの接続端末における被覆層の段
剥した境界端縁に絶縁テープを巻いた構造が実開
昭56−20330号により知られているが、このケー
ブル接続部は、自己融粘着テープを巻回した補強
部絶縁層にボイドの発生を防ぐために発泡コンパ
ウンドを充填したものであり、そのケーブル端末
の段剥した被覆層の境界端縁に防水テープを巻い
てこの防水テープ巻回と接続部保護管端部との間
に間〓を形成している。 In addition, as an example of using waterproof tape at the cable connection part, there is a structure in which an insulating tape is wrapped around the edge of the peeled off layer of the coating layer at the connection terminal of the cable, which is known from Utility Model Application Publication No. 56-20330. In the cable connection section, the reinforcing insulating layer is wrapped with self-melting adhesive tape and filled with foam compound to prevent voids, and waterproof tape is applied to the boundary edge of the peeled coating layer at the end of the cable. A gap is formed between this waterproof tape winding and the end of the connecting protection tube.
またケーブルの長さ方向の水の浸入を防止する
ためにケーブル内に水吸収材を充填することが特
公昭46−31111号公報により知られている。 Furthermore, it is known from Japanese Patent Publication No. 46-31111 to fill a cable with a water absorbing material in order to prevent water from penetrating in the lengthwise direction of the cable.
従来のように絶縁補強体上に防水テープを巻く
構成ではテープの巻き方が不十分であると接続部
に浸水し易く、特に接続部の絶縁物がゴム・プラ
スチツク系である場合は、長期間にわたつて浸水
が生ずると絶縁物にいわゆる水トリー等が発生し
て電力ケーブルの絶縁性能を劣化させる原因とな
つていた。
In the conventional configuration in which waterproof tape is wrapped over the insulation reinforcement, if the tape is not wrapped properly, water tends to leak into the connection area, especially if the insulation material at the connection area is made of rubber or plastic. When water intrudes over a long period of time, so-called water trees occur in the insulation, which causes the insulation performance of power cables to deteriorate.
また前記公開公報記載のような接続部では、接
続部の径方向の水の浸入に対しては防止すること
ができず、ケーブル端末における被覆層の段剥境
界端縁に絶縁テープを巻回するのに保護管端部と
の間に間〓を形成して巻回する構造のために、ケ
ーブル端末周面の接合界面に沿つて接続部内へ浸
入する水を防止することは不可能である。 Furthermore, in the connection section as described in the above-mentioned publication, it is not possible to prevent water from entering in the radial direction of the connection section, and an insulating tape is wound around the step separation boundary edge of the coating layer at the cable terminal. However, because of the structure in which the protective tube is wound with a gap formed between it and the end of the cable, it is impossible to prevent water from penetrating into the connection part along the joint interface of the peripheral surface of the cable end.
ケーブルの浸水を防止する対策としては、ケー
ブルシース外からケーブル内に径方向に水が浸入
するのを防止するためにケーブルシースの内面に
金属フイルムによる遮水層を設けた電力ケーブル
が開発されているが、このようなケーブルはその
接続部においても、径方向の水の浸入を完全に防
止するとともに、ケーブルシースの界面に沿つて
接続部内へ浸入するケーブル長さ方向の浸水を完
全に防止することが必要であるが、従来は確実に
浸水を防止できるものはなかつた。 As a measure to prevent water from entering the cable, power cables have been developed that have a water-shielding layer made of metal film on the inner surface of the cable sheath to prevent water from entering the cable from outside the cable sheath in the radial direction. However, such cables completely prevent water from entering in the radial direction at their connections, as well as completely preventing water from entering along the length of the cable into the connections along the cable sheath interface. However, until now, there was no way to reliably prevent flooding.
そこで本発明は、接続部内への径方向の浸入水
および接続部端縁のケーブルシース界面に沿つて
接続部内に浸入する水を確実に防止することがで
きるようにした浸水防止型のケーブル接続部を提
供することを目的とするものである。 SUMMARY OF THE INVENTION Therefore, the present invention provides a water-infiltration-proof cable connection part that can reliably prevent water from entering the connection part in the radial direction and water from entering the connection part along the cable sheath interface at the edge of the connection part. The purpose is to provide the following.
前記の目的を達成するために本発明の浸水防止
型ケーブル接続部は、ケーブル接続部の絶縁筒１
１の外周面上から絶縁筒両端のケーブル端末にお
ける金属テープを用いたケーブル遮水層３，３の
外周面上にわたつて、金属または金属とゴム・プ
ラスチツクのラミネート材からなる金属テープを
用いた接続部遮水層１４を設け、この接続部遮水
層１４の両端部の内側隅部においてその内面とケ
ーブル端末部外周面との間を〓間なく充填するよ
うに水吸収性能が大なるポリマー等の水吸収材層
１３，１３を密接して設けたものである。
In order to achieve the above object, the submergence-proof cable connection part of the present invention has an insulating tube 1 of the cable connection part.
A metal tape made of metal or a laminate of metal and rubber/plastic was used from the outer circumferential surface of the insulating tube to the outer circumferential surface of the cable water-shielding layer 3, 3 using metal tape at the cable terminals at both ends of the insulating tube. A water-shielding layer 14 is provided at the connection portion, and a polymer having high water absorption performance is formed so as to fill the space between the inner surface of the water-shielding layer 14 and the outer peripheral surface of the cable end at the inner corners of both ends of the water-shielding layer 14. Water absorbing material layers 13, 13, etc. are provided in close contact with each other.
前記の金属テープを用いた接続部遮水層１４
は、接続部における径方向の水の浸入対して接続
部を包囲して浸水を完全に防止するものであり、
また水吸収材層１３は、接続部遮水層１４の両端
内側におけるケーブル端末部外周面との間の内側
隅部を〓間なく密接充填されているために、接続
部端縁部におけるケーブルシースの接合界面に沿
つて接続部内に浸入する水を吸収し浸水を完全に
防止することになる。
Waterproof layer 14 at the connection portion using the metal tape described above
is a type that surrounds the connection part to completely prevent water from entering in the radial direction at the connection part,
In addition, since the water absorbing material layer 13 is tightly packed in the inner corner between the outer circumferential surface of the cable terminal part on the inner side of both ends of the connection part water-shielding layer 14, the cable sheath at the end edge of the connection part is tightly packed. It absorbs water that enters into the joint along the joint interface and completely prevents water from entering.
以下本発明の実施例を図面により説明する。接
続すべき電力ケーブル１，１は、金属とゴム・プ
ラスチツクからなるラミネートテープのような金
属テープを用いたケーブル遮水層３がケーブルシ
ース２の内側に設けられているものであり、この
接続すべきケーブル１，１の各端末をケーブル遮
水層３，３、遮蔽層４，４、外部導電層５，５、
絶縁層６，６が段階的に露出するように段剥ぎ
し、露出したケーブル導体７，７をスリーブ８に
より接続する。
Embodiments of the present invention will be described below with reference to the drawings. The power cables 1, 1 to be connected have a cable water shielding layer 3 provided inside the cable sheath 2 using a metal tape such as a laminated tape made of metal and rubber/plastic. The respective terminals of the cables 1 and 1 are coated with cable water shielding layers 3 and 3, shielding layers 4 and 4, outer conductive layers 5 and 5,
The insulating layers 6, 6 are stripped in stages to expose them in stages, and the exposed cable conductors 7, 7 are connected with a sleeve 8.
このスリーブ接続した導体接続部の外周にスリ
ーブカバー９を設け、絶縁層６，６の上にはそれ
ぞれゴム・プラスチツクからなる絶縁スペーサ１
０，１０を嵌挿し、両絶縁スペーサ１０，１０上
に絶縁筒１１の両端を嵌合させて取付け、この絶
縁筒１１の両端部上から遮蔽層４，４上と外部導
電層５，５上にわたつて半導電層１２，１２を設
ける。 A sleeve cover 9 is provided around the outer periphery of the sleeve-connected conductor connection portion, and an insulating spacer 1 made of rubber or plastic is placed on top of the insulating layers 6, 6, respectively.
0 and 10, and fit and attach both ends of the insulating tube 11 onto both insulating spacers 10, 10, and from above both ends of this insulating tube 11, on the shielding layers 4, 4 and on the outer conductive layers 5, 5. Semiconductor layers 12, 12 are provided over the area.
前記の各ケーブル端末のケーブル遮水層３，３
上から遮蔽層４，４と半導電層１２，１２上にま
たがつて水吸収材層１３，１３を密接させて被せ
る。この水吸収材層１３は水吸収性能が大なるた
とえば酸化カルシウムの粉末や顆粉体、または、
ポリビニルアルコール、カルボキシメチルセルロ
ーズ、もしくはこれらの金属塩、マレイン酸共重
合体、ポリアクリル酸等のポリマーを用い、必要
に応じてこの水吸収材層１３にフアーネスブラツ
ク、アセチレンブラツク等のカーボンブラツクを
混入して導電性にする。 Cable water shielding layer 3, 3 of each cable terminal mentioned above
Water absorbing material layers 13, 13 are closely placed over the shielding layers 4, 4 and the semiconductive layers 12, 12 from above. This water-absorbing material layer 13 is made of calcium oxide powder or granules having high water-absorbing performance, or
A polymer such as polyvinyl alcohol, carboxymethyl cellulose, or a metal salt thereof, a maleic acid copolymer, or polyacrylic acid is used, and if necessary, carbon black such as furnace black or acetylene black is applied to this water absorbing material layer 13. Mix it to make it conductive.
前記の絶縁筒１１の外周面上から両ケーブル端
末のケーブル遮水層３，３上にまたがつて、金属
または金属とゴム・プラスチツクのラミネート材
のような金属テープを用いた接続部遮水層１４を
設け、この接続部遮水層１４の両端部の内側隅部
においてこの内側隅部の内面とケーブル端末部外
周面との間に前記の水吸収材層１３，１３を〓間
なく密接して充填するように設ける。 A connection water-shielding layer using a metal tape such as metal or a laminate of metal and rubber/plastic is applied from the outer peripheral surface of the insulating cylinder 11 to the cable water-shielding layers 3, 3 of both cable terminals. 14 is provided, and the water absorbing material layers 13, 13 are placed in close contact with each other between the inner surface of this inner corner and the outer circumferential surface of the cable end at the inner corner of both ends of the connection water-shielding layer 14. It is provided so that it can be filled.
前記の接続部遮水層１４の外周面上には両端が
両ケーブル端末のケーブルシース２，２上にわた
る外部保護層１５を防水テープ巻きまたはPVC
の熱収縮チユーブ等により設ける。 On the outer circumferential surface of the water-shielding layer 14 at the connection part, an external protective layer 15 is wrapped with waterproof tape or PVC so that both ends thereof cover the cable sheaths 2, 2 of both cable terminals.
Installed using a heat-shrinkable tube, etc.
前記のように構成した本発明の浸水防止型ケー
ブル接続部は、接続部における径方向の水の浸入
に対しては金属テープを用いた接続部遮水層１４
が接続部を包囲して浸水を完全に防止する。また
接続部遮水層１４、外部保護層１５の端縁とケー
ブル端末との間の接合界面に沿つて接続部内に浸
入する水に対しては、接続部遮水層１４の両端内
側におけるケーブル端末部外周面との間の内側隅
部を〓間なく密接して充填する水吸収材層１３，
１３により浸入水を吸収することにより接続部内
への浸水を完全に防止するのである。 The water-proof cable connection section of the present invention configured as described above has a connection section water-shielding layer 14 using a metal tape to prevent water from entering in the radial direction at the connection section.
surrounds the connection and completely prevents water from entering. In addition, against water that enters into the connection part along the joint interface between the edges of the connection part water-shielding layer 14 and the outer protective layer 15 and the cable terminal, the cable terminals inside both ends of the connection part water-shielding layer 14 A water absorbing material layer 13 that closely fills the inner corner between the outer circumferential surface of the
13 absorbs the infiltrating water, thereby completely preventing water from entering the connecting portion.
前述のように本発明は、ケーブル接続部を囲ん
で金属テープの接続部遮水層を設けるとともに、
接続部遮水層の両端部の内側隅部にケーブル端末
部外周面との間の空間を〓間なく密接して充填す
る水吸収材層を設けたので、接続部における径方
向の浸水および接続部端縁部とケーブルシースの
接合界面に沿つて接続部内に浸入する水を完全に
防止することができ、接続部の絶縁が浸水により
劣化することがなく経年電気特性が安定した信頼
性の高いケーブル接続部が得られるものである。
As mentioned above, the present invention provides a water-shielding layer at the connection portion of the metal tape surrounding the cable connection portion, and
Water-absorbing material layers are provided at the inner corners of both ends of the water-shielding layer at the connection part to closely fill the space between the cable end and the outer peripheral surface of the cable terminal, thereby preventing radial water seepage at the connection part and connection. It is possible to completely prevent water from entering the connection part along the joint interface between the end edge of the cable and the cable sheath, and the insulation of the connection part does not deteriorate due to water intrusion, resulting in highly reliable electrical characteristics that are stable over time. A cable connection is obtained.
図は本発明の１実施例の断面図である。
１：電力ケーブル、３：ケーブル遮水層、１
１：絶縁筒、１３：水吸収材層、１４：接続部遮
水層。
The figure is a sectional view of one embodiment of the present invention. 1: Power cable, 3: Cable water barrier layer, 1
1: Insulating cylinder, 13: Water absorbing material layer, 14: Water-blocking layer at connection part.
Claims (1)
端のケーブル端末における金属テープを用いたケ
ーブル遮水層３，３の外周面上にわたつて金属ま
たは金属とゴム・プラスチツクのラミネート材か
らなる接続部遮水層１４を設け、前記接続部遮水
層１４の両端部内側隅部の内面とケーブル端末部
外周面との間に〓間なく密接させて水吸収材層１
３，１３を設けたことを特徴とする浸水防止型ケ
ーブル接続部。1. A connection section made of metal or a laminate of metal and rubber/plastic that extends from the top of the insulating tube 11 of the cable connection section to the outer circumferential surface of the cable water-shielding layers 3, 3 using metal tape at the cable terminals at both ends of the insulating tube. A water-blocking layer 14 is provided, and the water-absorbing material layer 1 is closely spaced between the inner surface of the inner corner of both ends of the connection part water-blocking layer 14 and the outer peripheral surface of the cable terminal part.
3, 13 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8635381A JPS57202819A (en) | 1981-06-06 | 1981-06-06 | Connecting part of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8635381A JPS57202819A (en) | 1981-06-06 | 1981-06-06 | Connecting part of cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57202819A JPS57202819A (en) | 1982-12-11 |
| JPH0125287B2 true JPH0125287B2 (en) | 1989-05-17 |
Family
ID=13884511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8635381A Granted JPS57202819A (en) | 1981-06-06 | 1981-06-06 | Connecting part of cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57202819A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5619557B2 (en) * | 2010-10-06 | 2014-11-05 | 株式会社ビスキャス | Heat-shrinkable tube and power cable connection using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620330B2 (en) * | 1976-10-06 | 1981-05-13 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5818436Y2 (en) * | 1979-07-25 | 1983-04-14 | 日立電線株式会社 | Insulation reinforcement part of rubber/plastic insulated cable |
-
1981
- 1981-06-06 JP JP8635381A patent/JPS57202819A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5620330B2 (en) * | 1976-10-06 | 1981-05-13 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57202819A (en) | 1982-12-11 |
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| JP2572480Y2 (en) | Terminal structure of shielded wire | |
| JPH0231696Y2 (en) | ||
| JPS6210898Y2 (en) | ||
| JPS6252533B2 (en) | ||
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| JPS6213292Y2 (en) | ||
| JPH055618Y2 (en) | ||
| JPS6118574Y2 (en) | ||
| JPS6231945Y2 (en) | ||
| JPS6015391Y2 (en) | Power cable connection | |
| JPH0537626Y2 (en) | ||
| JPH0112508Y2 (en) | ||
| JPS629611Y2 (en) |