JPH0436503Y2 - - Google Patents
Info
- Publication number
- JPH0436503Y2 JPH0436503Y2 JP1987083449U JP8344987U JPH0436503Y2 JP H0436503 Y2 JPH0436503 Y2 JP H0436503Y2 JP 1987083449 U JP1987083449 U JP 1987083449U JP 8344987 U JP8344987 U JP 8344987U JP H0436503 Y2 JPH0436503 Y2 JP H0436503Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- power cable
- corrosion
- communication line
- communication
- 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
- 238000004891 communication Methods 0.000 claims description 30
- 238000005260 corrosion Methods 0.000 claims description 25
- 238000007765 extrusion coating Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 38
- 239000002184 metal Substances 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Communication Cables (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、光フアイバ等の通信線を内蔵せしめ
た通信線入りの電力ケーブルに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a power cable containing a communication line, which has a built-in communication line such as an optical fiber.
従来、電力ケーブルにおいて光フアイバ等の通
信線を電力ケーブルコアの外側に内蔵させるもの
にあつては、第２図に示すように、導体１上に絶
縁体２及び金属シース３並びに必要に応じ金属補
強層４を順次被覆して構成される電力ケーブルコ
ア５の外側に施されたゴム・プラスチツク防食層
６に凹溝６ａを形成せしめ、この凹溝６ａ内に光
フアイバケーブル等の通信線７を収納し、そして
海底に敷設せるものの場合にはかかる防食層６上
にプラスチツクテープ等による押え巻層８1、ジ
ユート等の座床８2を介して鉄線等によるがい装
９を巻装し、最後にジユート等のサービング１０
を施して構成していた。（必要があれば実開昭61
−13414号公報を参照されたい）
〔考案が解決しようとする問題点〕
かくの如き通信線入り電力ケーブルによれば、
ケーブル製造中、ふ設中及びその後にも受ける曲
げ、捩じり等の外力によつて、防食層の凹溝形成
箇所に応力が集中し、そしてかかる凹溝形成部分
は剛性の変曲点ともなつてクラツク発生の端緒と
なる恐れがあつた。
Conventionally, in the case of a power cable in which a communication line such as an optical fiber is built into the outside of the power cable core, as shown in FIG. A concave groove 6a is formed in the rubber/plastic anticorrosion layer 6 applied to the outside of the power cable core 5, which is formed by sequentially covering the reinforcing layer 4, and a communication line 7 such as an optical fiber cable is inserted into the concave groove 6a. In the case of a product that is to be stored and laid on the seabed, a protective layer 81 of plastic tape or the like is wrapped around the anti-corrosion layer 6, a reinforcement layer 9 of iron wire or the like is wrapped through a seat 82 of jute or the like, and finally 10 servings of juyut etc.
It was constructed by applying (If necessary, please
(Please refer to Publication No. 13414) [Problems to be solved by the invention] According to such a power cable with communication line,
Due to external forces such as bending and torsion that are applied during cable manufacturing, installation, and afterward, stress is concentrated at the groove-forming part of the anti-corrosion layer, and this groove-forming part is also known as an inflection point in rigidity. There was a fear that this could lead to a crack outbreak.
また、通信線は外部からの保護用として金属部
材（シースまたはテープの層）を用いる場合が多
いが、その通信線はゴム・プラスチツク防食層の
凹溝の中に電気的に隔絶された状態で収納されて
いることから、かかる金属部材に電力ケーブルコ
アからの電磁・静電誘導により電圧が発生し、感
電や防食層の絶縁破壊を惹起し、危険であつた。 In addition, communication lines are often protected from the outside by using metal members (sheaths or tape layers), but the communication lines are electrically isolated in grooves in the rubber/plastic anticorrosive layer. Because the cables are housed in such metal members, voltage is generated in these metal members due to electromagnetic and electrostatic induction from the power cable core, causing electric shock and dielectric breakdown of the anti-corrosion layer, which is dangerous.
本考案は、上記した従来技術の問題点に鑑み、
通信線を内蔵させる防食層においての応力集中や
絶縁破壊による損傷の危険性を排除し得る、この
種通信線入り電力ケーブルの提供を目的としたも
のである。 In view of the problems of the prior art described above, the present invention
The object of the present invention is to provide a power cable containing communication lines, which can eliminate the risk of damage due to stress concentration or dielectric breakdown in the anti-corrosion layer in which the communication lines are built.
上記目的を達成するため、本考案の通信線入り
電力ケーブルは、電力ケーブルコアの外側導電層
上に導電性外被を有する通信線をその導電性外被
を電気的に接触させつつ添着配置し、その通信線
を含めた当該ケーブルコア上に第一の防食層を押
出被覆形成し、その第一防食層の上に第二防食層
を被覆形成したことを特徴とする。
In order to achieve the above object, the power cable with communication wire of the present invention has a communication wire having a conductive jacket attached to the outer conductive layer of the power cable core while making electrical contact with the conductive jacket. , a first anti-corrosion layer is formed by extrusion on the cable core including the communication line, and a second anti-corrosion layer is formed on the first anti-corrosion layer.
以下、本考案の一実施例を示す第１図により具
体的に説明する。
Hereinafter, an embodiment of the present invention will be explained in detail with reference to FIG. 1.
図は海底敷設用油入り電力ケーブルを例にして
おり、ケーブルコア１１は、油通路１２を有する
導体１３の上に絶縁紙の纏巻による絶縁体１４を
施し、さらに鉛被等の金属シース１５並びに必要
に応じ金属補強層１６を順次施して導電性被覆が
形成されているものである。 The figure shows an oil-filled power cable for laying on the seabed as an example, and the cable core 11 has an insulator 14 wrapped in insulating paper on a conductor 13 having an oil passage 12, and a metal sheath 15 such as a lead sheath. Further, a metal reinforcing layer 16 is sequentially applied as necessary to form a conductive coating.
本考案は、かかる導電性被覆の金属補強層１６
上に金属管等の導電性外被１７を有する光フアイ
バ等の通信線１８をその導電性外被１７がかかる
金属補強層１６に電気的に接触するよう添着配置
してなるもので、その添着方法は、縦添装着や
Ｓ・Ｚ巻き等任意で良い。 The present invention provides a metal reinforcing layer 16 of such a conductive coating.
A communication line 18 such as an optical fiber having a conductive jacket 17 such as a metal tube on top is attached so that the conductive jacket 17 is in electrical contact with the metal reinforcing layer 16. Any method may be used, such as vertical attachment or S/Z winding.
そして、かくの如く通信線１８を添着し必要に
応じ押さえ巻層を有した金属補強層１６の上に、
第一防食層１９が押出被覆形成されるとともに、
その第一防食層１９の周上に直接あるいは座床を
介して第二防食層２０が押出被覆形成されてなる
ものである。 Then, on top of the metal reinforcing layer 16 with the communication wire 18 attached thereto and having a pressing layer as required,
While the first corrosion protection layer 19 is formed by extrusion coating,
A second anti-corrosion layer 20 is formed by extrusion coating on the circumference of the first anti-corrosion layer 19 either directly or via a seat.
かかる第二防食層２０の上にはジユート等によ
る座床２１を介して鉄線等によるがい装２２が巻
装され、さらにジユート等によるサービング２３
が施される。 A covering 22 made of iron wire or the like is wrapped on top of the second anticorrosion layer 20 via a seat 21 made of juute or the like, and a serving 23 made of juite or the like is further wrapped.
will be applied.
しかして、第一防食層１９及び第二防食層２０
は、ゴム・プラスチツク材料の押出成型により形
成されるが、特に第一防食層は、通信線１６を完
全に覆うことが可能な厚み持ち、かつまた通信線
１６の突設形状に対して緩やかな曲率の内部凹曲
面１９ａを与えるように押出被覆されるものであ
る。 Therefore, the first anti-corrosion layer 19 and the second anti-corrosion layer 20
is formed by extrusion molding of rubber/plastic material, and in particular, the first anticorrosion layer has a thickness that can completely cover the communication line 16, and also has a thickness that is gentle to the protruding shape of the communication line 16. It is extrusion coated to give an internal concave curved surface 19a of curvature.
このように、第一防食層は、応力集中の要因と
なる凹溝の刻設をすることなく押出成形によつて
通信線上を覆い、かつ内部凹曲面１９ａによつて
通信線を把握させるようにしていることから、凹
溝を形成したときに見られたような応力の集中を
無くすることができる。 In this way, the first anti-corrosion layer is formed by extrusion molding to cover the communication line without forming grooves that may cause stress concentration, and the communication line is gripped by the inner concave curved surface 19a. Because of this, it is possible to eliminate the concentration of stress that occurs when grooves are formed.
以上説明して来たように、本考案の通信線入り
電力ケーブルは、電力ケーブルコアの外部導電層
に導電性外被を有する通信線が電気的に接触しつ
つ添着配置され、その上から押出による第一防食
層、第二防食層が順次被覆形成されたものである
から、従来の凹溝を形成したときに見られたよう
な防食層の応力の局部集中による損傷の恐れが無
くなり、万が一に通信線を覆う部分の厚みが薄く
なるために起こりがちな破断やクラツクが生じ得
たとしてもその上の第二防食層への破壊の波及が
殆ど無くなるので、ケーブル全体としての防食効
果が維持できるものとなる。
As explained above, in the power cable with communication wires of the present invention, a communication wire having a conductive jacket is placed in electrical contact with the outer conductive layer of the power cable core, and is extruded from above. Since the first corrosion protection layer and the second corrosion protection layer are formed sequentially, there is no risk of damage due to local concentration of stress in the corrosion protection layer, which was seen when forming conventional grooves. Even if breakage or cracks, which tend to occur due to the thinning of the part covering the communication cable, will hardly spread to the second corrosion protection layer above it, the corrosion protection effect of the cable as a whole is maintained. Become what you can.
また、通信線は第一防食層の内側でかつケーブ
ルコアの導電層に電気的に接触していて当該導電
層と同電位にされているため、導電部間の大きな
電位に基づく防食層への絶縁破壊の要因が無くな
るものである。等々、通信線を内蔵させたとして
もケーブル性能上問題が無く安全性に富んだこの
種通信線入り電力ケーブルの提供を可能にし、そ
の実益は大きい。 In addition, since the communication line is inside the first anti-corrosion layer and is in electrical contact with the conductive layer of the cable core, and is at the same potential as the conductive layer, the anti-corrosion layer is affected by the large potential between the conductive parts. This eliminates the cause of dielectric breakdown. Even if a communication line is built-in, it is possible to provide a power cable with a built-in communication line, which has no problem in terms of cable performance and is highly secure, and has great practical benefits.
第１図は本考案にかかる通信線入り電力ケーブ
ルの一実施例を示す断面説明図、第２図は従来の
通信線入り電力ケーブルの例を示す断面説明図で
ある。
１１……ケーブルコア、１２……油通路、１３
……導体、１４……絶縁体、１５……金属シー
ス、１６……金属補強層、１７……導電性外被、
１８……通信線、１９……第一防食層、２０……
第二防食層、２１……座床、２２……がい装、２
３……サービング。
FIG. 1 is an explanatory cross-sectional view showing one embodiment of a power cable with communication lines according to the present invention, and FIG. 2 is an explanatory cross-sectional view showing an example of a conventional power cable with communication lines. 11...Cable core, 12...Oil passage, 13
... Conductor, 14 ... Insulator, 15 ... Metal sheath, 16 ... Metal reinforcing layer, 17 ... Conductive jacket,
18... Communication line, 19... First corrosion protection layer, 20...
Second anti-corrosion layer, 21... Seat floor, 22... Insulation, 2
3... Serving.
Claims (1)
を有する通信線をその導電性外被を電気的に接触
させつつ添着配置し、その通信線を含めた当該ケ
ーブルコア上に第一の防食層を押出被覆形成し、
その第一防食層の上に第二防食層を被覆形成した
ことを特徴とする通信線入り電力ケーブル。 A communication wire having a conductive jacket is attached and arranged on the outer conductive layer of the power cable core while the conductive jacket is in electrical contact with the outer conductive layer, and a first anti-corrosion layer is applied on the cable core including the communication wire. forming an extrusion coating,
A power cable with a communication line, characterized in that a second anti-corrosion layer is formed on the first anti-corrosion layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987083449U JPH0436503Y2 (en) | 1987-05-29 | 1987-05-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987083449U JPH0436503Y2 (en) | 1987-05-29 | 1987-05-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63192611U JPS63192611U (en) | 1988-12-12 |
| JPH0436503Y2 true JPH0436503Y2 (en) | 1992-08-28 |
Family
ID=30937046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987083449U Expired JPH0436503Y2 (en) | 1987-05-29 | 1987-05-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436503Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885710U (en) * | 1981-12-07 | 1983-06-10 | 住友電気工業株式会社 | Fiber optic power cable |
-
1987
- 1987-05-29 JP JP1987083449U patent/JPH0436503Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63192611U (en) | 1988-12-12 |
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