JPH0429446Y2 - - Google Patents
Info
- Publication number
- JPH0429446Y2 JPH0429446Y2 JP1986049100U JP4910086U JPH0429446Y2 JP H0429446 Y2 JPH0429446 Y2 JP H0429446Y2 JP 1986049100 U JP1986049100 U JP 1986049100U JP 4910086 U JP4910086 U JP 4910086U JP H0429446 Y2 JPH0429446 Y2 JP H0429446Y2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- core
- wire
- drag
- submarine
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 238000009434 installation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 101100208039 Rattus norvegicus Trpv5 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】
＜産業上の利用分野＞
本考案は海底用単心OFケーブルの改良に関す
るものである。[Detailed description of the invention] <Industrial application field> This invention relates to the improvement of single-core OF cables for submarine use.
＜先行技術と問題点＞
海底用単心OFケーブルにおいては、ケーブル
保護のための厳重な鎧装が不可欠である。<Prior art and problems> For submarine single-core OF cables, severe armoring is essential to protect the cables.
ところで、海底用単心OFケーブルの布設にお
いては、通常製造したケーブルを貯線倉にコイル
取りし、港において、この貯線倉内のケーブルを
輸送船にコイル取りすることにより積込みこの輸
送船をケーブルの布設現場に移動させて、その輸
送船内のケーブルを布設船に移載することが必要
である。 By the way, in the installation of submarine single-core OF cables, the manufactured cable is usually coiled in a wire storage warehouse, and at the port, the cable in this storage warehouse is coiled and loaded onto a transport ship. It is necessary to move the cable to the installation site and transfer the cable inside the transport ship to the installation ship.
しかしながら、一方向撚り鉄線鎧装海底ケーブ
ルをこのようなコイル取りを繰り返えす処理によ
り取扱うと、本考案者の経験によれば、ケーブル
伸びの発生が不可避的である。例えば、導体断面
積：240mm2、一方向撚鎧装の鉄線断面積：1000mm2
の単心OFケーブルをコイル取り径5mでコイル取
りすると、伸び率約0.2％の伸びが発生する。 However, when a unidirectionally twisted iron wire armored submarine cable is handled by such a process that involves repeated coiling, cable elongation inevitably occurs, according to the inventor's experience. For example, conductor cross-sectional area: 240mm 2 , iron wire cross-sectional area of unidirectional twisted armor: 1000mm 2
When a single-core OF cable is coiled with a coil diameter of 5 m, an elongation of approximately 0.2% occurs.
かかる伸びの発生原因としては、ケーブルのコ
イル取りの際、コイルの１ターンにつきケーブル
が一回捩られ、その捩り方向が鎧装の鉄線撚りピ
ツチを増大する方向となり、この鉄線撚りピツチ
の増大によつてケーブルに伸びが発生することが
考えられる。 The reason for this elongation is that when the cable is coiled, the cable is twisted once for each turn of the coil, and the twisting direction is the direction that increases the iron wire twist pitch of the armor. Therefore, it is conceivable that the cable may stretch.
このケーブル伸びは、ケーブルをコイルから繰
り出す際に捩りの戻りにより元に戻り、従つて、
上記のように数回のコイル取りを繰り返えせば、
ケーブル導体が引張り・圧縮を数回にわたつて受
け、ケーブル導体への悪影響が懸念される。 This cable elongation is restored by untwisting when the cable is unwound from the coil, and therefore,
If you can repeat the coil removal several times as described above,
The cable conductor is subjected to tension and compression several times, and there is concern that it may have an adverse effect on the cable conductor.
＜考案の目的＞
本考案の目的は、コイル取り時でのケーブルの
伸びを充分に軽減できる。海底用単心OFケーブ
ルを提供することにある。<Purpose of the invention> The purpose of the invention is to sufficiently reduce cable elongation during coil removal. Our objective is to provide single-core OF cables for submarine use.
鉄線鎧装に起因してコイル取り時にケーブルに
伸びが生じるのは一方向撚り鎧装に限られる。而
して、本考案が対象とする鉄線鎧装海底電力ケー
ブルは一方向撚り鉄線鎧装ケーブルである。 It is only with unidirectionally twisted armor that the cable stretches during coil removal due to iron wire armor. The iron wire armored submarine power cable to which the present invention is directed is a unidirectional twisted iron wire armored cable.
＜考案の構成＞
本考案に係る海底用単心OFケーブルは、一方
向撚りの鉄線鎧装を施した海底用単心OFケーブ
ルにおいて、前記ケーブルの中心となるスパイラ
ル管とその直上のケーブル導体との間に、高抗力
線を撚り合せてなる高抗力線層を設けたことを特
徴とする構成である。<Structure of the invention> The submarine single-core OF cable according to the present invention is a submarine single-core OF cable that is armored with unidirectionally twisted iron wire, and includes a spiral tube at the center of the cable and a cable conductor directly above the spiral tube. This structure is characterized in that a high-drag wire layer formed by twisting high-drag wires is provided between the two.
＜実施例の説明＞
以下、図面により本考案の実施例について説明
する。<Description of Examples> Examples of the present invention will be described below with reference to the drawings.
図面は単心OFケーブルについての実施例を示
している。 The drawing shows an embodiment for a single-core OF cable.
図において、１は油通路用のスパイラル管（例
えば、銅）である。２，…はスパイラル管上に設
けた高抗力線（例えば、右撚りと左撚りの２層）、
３は導体素線（例えば銅素線）を撚合せてなるケ
ーブル導体であり、この導体素線のヤング率に較
べて高抗力線のヤング率を充分に大きくしてあ
る。４はケーブル絶縁層、５は金属シース（鉛合
金シース）、６はプラスチツクジヤケツト（例え
ばポリエチレン）、７は一方向撚りの鉄線鎧装
（一重または二重）、８は保護被覆（例えばポリプ
ロピレン）である。 In the figure, 1 is a spiral tube (for example, made of copper) for an oil passage. 2,... is a high-drag wire installed on a spiral tube (for example, two layers of right-handed and left-handed twist),
3 is a cable conductor made by twisting conductor wires (for example, copper wires), and the Young's modulus of the high drag wire is made sufficiently larger than that of the conductor wires. 4 is a cable insulation layer, 5 is a metal sheath (lead alloy sheath), 6 is a plastic jacket (for example, polyethylene), 7 is a unidirectionally twisted iron wire armor (single or double layer), and 8 is a protective coating (for example, polypropylene). It is.
上記高抗力線には、鉄線、硬鋼線、ピアノ線等
を使用できる。 Iron wire, hard steel wire, piano wire, etc. can be used as the high-drag wire.
上記ケーブルが一方向撚りの鉄線鎧装のために
コイル取り時に伸びることは既述した通りであ
る。 As mentioned above, the cable stretches when the coil is removed because of the unidirectionally twisted iron wire sheathing.
而るに、この伸びにつき、ケーブル導体が存在
しない場合の伸びε0を基準にして、ケーブル導体
のヤング率：Ec，ケーブル導体断面積：Ac、鎧
装鉄線のヤング率：Ea、鎧装断面積：Aaの場合
の伸びεを求めると。 Regarding this elongation, based on the elongation ε 0 in the absence of a cable conductor, Young's modulus of the cable conductor: Ec, cross-sectional area of the cable conductor: Ac, Young's modulus of the armored iron wire: Ea, armored wire Area: Find the elongation ε for Aa.
ε＝ε0／１＋EcAc／EaAa
である。而るに、ケーブル導体のヤング率Ecを
高抗力線の付設により大としているから、それだ
け上記εを小さくできる。ε=ε 0 /1+EcAc/EaAa. In addition, since the Young's modulus Ec of the cable conductor is increased by attaching the high-drag wire, the above-mentioned ε can be reduced accordingly.
現に、スパイラル管上の導体断面積：240mm2、
一方向撚鎧装の鉄線断面積：1000mm2の従来の単心
OFケーブルをコイル取り径5mでコイル取りした
場合のケーブル伸び率0.2％に対し、このケーブ
ルに図面に示す高抗力線層を断面積190mm2（鉄線）
で付設した本考案単心OFケーブルにおいては、
その伸び率を上記と同一のコイル取り径5mのも
とで0.1％に低減できた。 Actually, the cross-sectional area of the conductor on the spiral tube: 240mm 2 ,
Unidirectional twisted armor wire cross-sectional area: 1000mm2 conventional single core
Compared to the cable elongation rate of 0.2% when the OF cable is coiled with a coil diameter of 5 m, this cable has a high-drag wire layer shown in the drawing with a cross-sectional area of 190 mm 2 (iron wire).
In the single-core OF cable of this invention attached with
The elongation rate was reduced to 0.1% under the same coil diameter of 5 m as above.
＜考案の効果＞
このように、本考案に係る海底用単心OFケー
ブルにおいては、一方向撚り鉄線鎧装ケーブルで
あつてもコイル取り時でのケーブルの伸びを充分
に低減でき、コイル取りを数回にわたつて行なわ
なければならない場合でもケーブル導体への悪影
響を回避できる。殊に、本願考案においては、高
抗力線をケーブル中心により近い位置すなわち単
心OFケーブルの中心となるスパイラル管とその
直上のケーブル導体との間に設けたから、ケーブ
ルがコイル取り、布設等の際に捩じりモーメント
を受けても当該高抗力線に作用する旋転力を小さ
くし得（旋転力はその部位の半径に比例）、この
ため、高抗力線層の素線径を小さくすることがで
きる。従つて、所定の耐張力性を付与するために
高抗力線を用いてもケーブルの可撓性を必要以上
に低下させることがない。<Effects of the invention> As described above, in the single-core OF cable for submarine use according to the invention, even if it is a unidirectional twisted iron wire armored cable, the elongation of the cable during coil removal can be sufficiently reduced, making it possible to remove the coil. Even if this has to be done several times, it is possible to avoid adverse effects on the cable conductor. In particular, in the present invention, since the high-drag wire is installed closer to the center of the cable, that is, between the spiral tube that is the center of the single-core OF cable and the cable conductor directly above it, it is easier to prevent the cable from being coiled or laid. Even if a torsional moment is applied to the high-drag wire, the turning force acting on the high-drag wire can be reduced (the turning force is proportional to the radius of that part), and for this reason, the diameter of the strands of the high-drag wire layer can be reduced. can. Therefore, even if a high-drag wire is used to impart a predetermined tensile strength, the flexibility of the cable will not be reduced more than necessary.
また、高抗力線層を小径なスパイラル管の直上
に配置する構成としているために、製造時に高抗
力な素線であつてもスパイラル管を変形させるこ
となく良好に撚り合せすることができ、しかもこ
の高抗力線層はケーブ導体の直下に設けておりま
すから、その高抗力性によりケーブル導体が圧迫
されて可撓性が損なわれるという虞れもない。 In addition, since the high-drag wire layer is arranged directly above the small-diameter spiral tube, even high-drag wires can be twisted well without deforming the spiral tube during manufacturing. Since this high-drag wire layer is provided directly below the cable conductor, there is no risk that the cable conductor will be compressed and its flexibility will be impaired due to its high-drag property.
従つて、本願考案の海底用単心OFケーブルは
布設時に高張力の加わる例えば水深150m以上の
深海布設用として有用である。 Therefore, the submarine single-core OF cable of the present invention is useful for deep sea installation where high tension is applied during installation, for example at a depth of 150 m or more.
図面は本考案に係る海底用単心OFケーブルを
示す説明図である。
図において、２…は高抗力線、３はケーブル導
体、７は一方向撚りの鉄線鎧装である。
The drawing is an explanatory diagram showing a submarine single-core OF cable according to the present invention. In the figure, 2... is a high-drag wire, 3 is a cable conductor, and 7 is a unidirectionally twisted iron wire armor.
Claims (1)
ケーブルにおいて、前記ケーブルの中心となるス
パイラル管とその直上のケーブル導体との間に、
高抗力線を撚り合わせてなる高抗力線層を設けた
ことを特徴とする海底用単心OFケーブル。 Single-core OF for submarine use with unidirectionally twisted iron wire armor
In the cable, between the spiral tube that is the center of the cable and the cable conductor directly above it,
A single-core OF cable for submarine use that features a high-drag wire layer made by twisting high-drag wires together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986049100U JPH0429446Y2 (en) | 1986-04-01 | 1986-04-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986049100U JPH0429446Y2 (en) | 1986-04-01 | 1986-04-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62160414U JPS62160414U (en) | 1987-10-12 |
| JPH0429446Y2 true JPH0429446Y2 (en) | 1992-07-16 |
Family
ID=30871239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986049100U Expired JPH0429446Y2 (en) | 1986-04-01 | 1986-04-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0429446Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684219U (en) * | 1979-12-04 | 1981-07-07 |
-
1986
- 1986-04-01 JP JP1986049100U patent/JPH0429446Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62160414U (en) | 1987-10-12 |
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