JPS5816408A - Submarine cable with gas supply device - Google Patents
Submarine cable with gas supply deviceInfo
- Publication number
- JPS5816408A JPS5816408A JP11572381A JP11572381A JPS5816408A JP S5816408 A JPS5816408 A JP S5816408A JP 11572381 A JP11572381 A JP 11572381A JP 11572381 A JP11572381 A JP 11572381A JP S5816408 A JPS5816408 A JP S5816408A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- submarine cable
- gas
- gas supply
- supply device
- 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
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 13
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 13
- 239000013535 sea water Substances 0.000 description 8
- 230000000472 traumatic effect Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 240000005572 Syzygium cordatum Species 0.000 description 5
- 235000006650 Syzygium cordatum Nutrition 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
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】
本発明は、３心架橋ポリエチレン絶縁海底ケーブル（以
下、ＸＬＰＥ海底ケーブルと称す）の事故による浸水を
防止するための構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for preventing a three-core cross-linked polyethylene insulated submarine cable (hereinafter referred to as XLPE submarine cable) from being flooded due to an accident.
従来３心ＸＬＰＥ海底ケーブルには、第１図０）、（ロ
）、（ハ）に例を示すような８種類の構造がある。図に
おいて、３本の導体ｌの上にそれぞれ架橋ポリエチレン
（ＸＩ、ＰＥ） より成る絶縁層２（合手導電層）が施
されて８心の絶縁線心が形成されている。Conventional three-core XLPE submarine cables have eight types of structures, examples of which are shown in Figure 1 (0), (B), and (C). In the figure, an insulating layer 2 (combined conductive layer) made of crosslinked polyethylene (XI, PE) is applied on each of three conductors 1 to form an 8-core insulated wire core.
（イ）図に示すものは、各線心の絶縁層２の外周に銅テ
ープシールド３が施されて、その８心が介在物４を介在
させて撚合わされ、さらにその外周に鉄線鎧装５が施さ
れている。この構造では、絶縁体（ＸＬＰＥ）が常に海
水に接しているため、水トリー又は銅トリーが発生し、
ケーブルが劣化する恐れがある。(a) In the case shown in the figure, a copper tape shield 3 is applied to the outer periphery of the insulating layer 2 of each wire core, and the eight cores are twisted together with an inclusion 4 interposed, and a steel wire armor 5 is further applied to the outer periphery of the copper tape shield 3. It has been subjected. In this structure, the insulator (XLPE) is always in contact with seawater, so water trees or copper trees occur,
The cable may deteriorate.
（ロ）図に示すものは、各線心の絶縁層２の外周にそれ
ぞれ鉛被６が施されて、その８心、が介在物７を介在さ
せて撚合わされ、さらにその外周に鉄線鎧装５が施され
ている。この構造では、鉛被６の下に水密コンパウンド
を施すことにより、鉛被６がたとえ外傷を受けても、海
水が走って水トリーを生ずる恐れのない構造であるが、
一方製造工程の３心集合撚合せにおいて、ボピ／の重量
が鉛被６の存在により重くなるため、製造単長に制限が
あり、短かくなる。(b) In the case shown in the figure, a lead sheath 6 is applied to the outer periphery of the insulating layer 2 of each wire core, and the eight cores are twisted together with an inclusion 7 interposed therebetween. is applied. In this structure, a watertight compound is applied under the lead sheath 6, so that even if the lead sheath 6 is damaged, there is no risk of seawater running through and creating a water tree.
On the other hand, in the three-fiber assembly twisting process in the manufacturing process, the weight of the bopi increases due to the presence of the lead sheath 6, so there is a limit to the length of the manufacturing unit, which results in a shorter length.
（ハ）図に示すものは、各線心の絶縁層２の外周に銅テ
ープシールド３が施されて、その８心が介在物４を介在
させて撚合わされ、その外周に一括の鉛被８が被覆され
、さらにその外周に鉄線鎧−５が施されている。この構
造では、水密コンパウンドにより鉛被８の下を水密にす
ることが困難であるため、鉛被８の外傷時に海水が長さ
方向に浸入し、水トリー又は銅トリーが発生し、ケーブ
ルが劣化する恐れが生ずる。(c) In the case shown in the figure, a copper tape shield 3 is applied to the outer periphery of the insulating layer 2 of each wire core, and the eight cores are twisted together with an inclusion 4 interposed, and a lump of lead sheathing 8 is applied to the outer periphery. It is coated, and a steel wire armor 5 is further applied to its outer periphery. With this structure, it is difficult to make the bottom of the lead sheath 8 watertight using a watertight compound, so when the lead sheath 8 is damaged, seawater infiltrates in the length direction, causing water trees or copper trees, and deteriorating the cable. There is a risk that this will happen.
又０）、←）、ｆ→図のいずれの構造も、事故に対する
警報装置がないため、ケープ・ルの外傷事故等をケーブ
ル破壊前に予知することが不可能である。Also, in any of the structures shown in Figures 0), ←), and f→, there is no warning device for accidents, so it is impossible to predict a traumatic accident on the cable before the cable breaks.
本発明は、上述の問題点を解決するため成されたもので
、ケーブルとしてガス通路を持つ一括鉛被型８心架橋ポ
リエチレ／絶縁海底ケーブルを使用し、そのガス通路へ
給ガス装置によりガスを補給することにより、鉛被に外
傷が生じても鉛被下に海水が浸入せず、水トリー発生め
恐れがなく、又８６集合撚合せ時、ポビンに巻ける線心
の長さを長くしてケーブルの製造単長を長くし得ると共
に、簡単な警報装置を取付けることにより、外傷事故を
ケーブル破壊前に予知し得る海底ケーブルを提供せんと
するものである。The present invention was made to solve the above-mentioned problems, and uses a lead-sheathed 8-core cross-linked polyethylene/insulated submarine cable with a gas passage as the cable, and supplies gas to the gas passage with a gas supply device. By replenishing the lead sheath, even if the lead sheath is damaged, seawater will not infiltrate under the lead sheath, and there is no risk of water tree formation.Also, the length of the wire core that can be wound around the pobbin during 86 set twisting can be increased. The purpose of the present invention is to provide a submarine cable in which the length of the cable can be made longer, and by installing a simple warning device, it is possible to predict a traumatic accident before the cable breaks.
本発明は、ガス通路を持つ一括鉛被型８心架橋ポリエチ
レン絶縁海底ケーブルの両端又は片端に、前記ガス通路
にガスを補給する給ガス装置？設けたことを特徴とする
給ガス装置付き海底ケーブルである。The present invention provides a gas supply device for replenishing gas to both ends or one end of a bulk lead-sheathed 8-core cross-linked polyethylene insulated submarine cable having a gas passage. This is a submarine cable equipped with a gas supply device.
本発明に用いる一括鉛被型３心ＸＬＰＥ海底ケーブルと
は、第１図（ハ）に示すような３６共通の一括鉛被８を
有するケーブルで、鉛被８下のガス通路としては、介在
物４中にスパイラル状線条体又は外周に多孔を有するパ
イプを埋め込む等により形成する。The lump lead-sheathed three-core XLPE submarine cable used in the present invention is a cable having 36 common lead sheaths 8 as shown in FIG. It is formed by, for example, embedding a spiral filament or a pipe having holes on the outer periphery in 4.
以下、本発明を図面を用いて実施例により説明する。Hereinafter, the present invention will be explained by examples using the drawings.
第２図は本発明の実施例を示す構成図である。図におい
て、９は上述のガス通路を持つ一括鉛被型８心ＸＬＰＥ
１９１底ケーブルで、海底に布設され、両端Ａ、Ｂが陸
上で立上り、それぞれ分岐箱１０．１０’で３本の絶縁
線心に分けられ、各線心の端末にはそれぞれ終端箱１１
又は１１′が設けられている。FIG. 2 is a configuration diagram showing an embodiment of the present invention. In the figure, 9 is a bulk lead-sheathed 8-core XLPE with the above-mentioned gas passage.
A 191-bottom cable is laid on the seabed, and both ends A and B rise on land, and each is divided into three insulated cores by a branch box 10 and 10', and a termination box 11 is installed at the terminal of each core.
or 11' is provided.
一方の分岐箱ＩＯ内のケーブル９のガス通路終端には、
給ガス管１２が接続され、これにはガスボンベ１８より
減圧弁１４ヲ介して、ガスが補給される。At the gas passage end of the cable 9 in one branch box IO,
A gas supply pipe 12 is connected to which gas is supplied from a gas cylinder 18 via a pressure reducing valve 14 .
又１５は圧力ゲージで、必要によりこの圧力ゲージの圧
力の低下に応答する警報装置１６が連結されている。Reference numeral 15 denotes a pressure gauge, to which an alarm device 16 is connected, if necessary, to respond to a drop in the pressure of this pressure gauge.
このような給ガス装置は、ケーブル９の一端のみに設け
ても良く、又ケーブル長が長い場合には、図に示すよう
に、他端にも給ガス管１２′、ガスボンベ１３′、減圧
弁１４′、圧力ゲージ１５′ヲ設けても良い。Such a gas supply device may be provided only at one end of the cable 9, or if the cable length is long, the gas supply pipe 12', gas cylinder 13', and pressure reducing valve may also be provided at the other end, as shown in the figure. 14' and a pressure gauge 15' may be provided.
上述のように構成された海底ケーブルにおいて、海底ケ
ーブル９のガス通路のガス圧を常にケーブルの受ける水
圧より高くなるように設定しておくと、ケーブル９に外
傷事故を生じた時、鉛被下のガス圧が水圧より高い定め
、海水の浸入を防ぎ、かつ海水が鉛被下の長さ方向に走
るのが阻止され、水分がケーブル９の絶縁体（ＸＬＰＥ
）に浸入せず、丞トリーを発生しない。In the submarine cable configured as described above, if the gas pressure in the gas passage of the submarine cable 9 is always set higher than the water pressure that the cable receives, in the event of a traumatic accident to the cable 9, lead exposure will be prevented. The gas pressure of the cable 9 is higher than the water pressure to prevent seawater from entering and to prevent seawater from running along the length of the lead sheath, allowing water to escape through the cable 9's insulation (XLPE).
) and does not cause excessive trees.
なお補給されるガスとしては、水分を含まないものであ
れば何でも良いが、Ｎ２ガスがコスト、安定性の上で好
ましい。Note that any gas may be used as long as it does not contain water, but N2 gas is preferable in terms of cost and stability.
又ケーブル９の外傷事故によりガスが洩れ、ケーブル内
の圧力が下がると圧力ゲージ１５の圧力が下がり、これ
に連結され九蓄報装置１６により警報が発せられるよう
にすれば、ケーブルの外傷事故をケーブルの破壊事故前
に予知することができる。In addition, if gas leaks due to a traumatic accident to the cable 9 and the pressure inside the cable decreases, the pressure in the pressure gauge 15 decreases, and if connected to this, an alarm is issued by the ninth alarm storage device 16, thereby preventing a traumatic accident to the cable. Cable destruction accidents can be predicted before they occur.
以上述べたように、本発明の海底ケーブルは、ガス通路
を持つ一括鉛被型８心采橋ポリエチレン絶縁海底ケーブ
ルの両端又は片端に、前記ガス通路にガスを補給する給
ガス装置金膜は友ため、海底ケーブルの鉛被下のガス圧
が常に水圧より高く設定され、鉛被に外傷事故が生じて
も、鉛被下への海水の浸入を防ぎ、かつ海水が鉛被下の
長さ方向に走るのが阻止されるので、ＸＬＰＥ絶縁体に
水トリーが発生せず、長期間ケーブルが劣化しない利点
がある。As described above, in the submarine cable of the present invention, a gold film gas supply device for replenishing gas to the gas passage is provided at both ends or one end of the lead-sheathed 8-core polyethylene insulated submarine cable having a gas passage. Therefore, the gas pressure under the lead sheathing of submarine cables is always set higher than the water pressure, and even if a traumatic accident occurs to the lead sheath, seawater is prevented from penetrating into the lead sheathing, and seawater is prevented from flowing in the length direction of the lead sheathing. This has the advantage that water trees do not occur in the XLPE insulation and the cable does not deteriorate over a long period of time.
又本発明の海底ケーブルは、一括鉛被型８心海底ケーブ
ルであるため、製造工程の８心集合撚合せ時、ボビンに
巻かれる線心に鉛被が存在しないから、線心の長さを長
くして製造単長を長くし得る利点がある。Furthermore, since the submarine cable of the present invention is a one-piece lead-sheathed eight-core submarine cable, there is no lead sheathing on the wire cores wound around the bobbin during the assembly and twisting of eight fibers in the manufacturing process, so the length of the wire cores can be reduced. There is an advantage that the manufacturing unit length can be increased by increasing the length.
又本発明は、給ガス装置に前述のような警報装置を設け
ると、海底ケーブルに生じた外傷事故をケーブル破壊前
に予知し得る効果がある。Further, the present invention has the effect that when the gas supply device is provided with an alarm device as described above, it is possible to predict a traumatic accident occurring on a submarine cable before the cable breaks.
第１図（イ）、←）、（ハ）はそれぞれ従来の海底ケー
ブルの構造の例を示す横断面図である。
第２図は本発明の実施例を示す構成図である。
１・・・導体、２・・・絶縁層、３・・・銅テープシー
ルド、４．７・・・介在物、５・・・鉄線鎧装、６，８
・・・鉛被、９・・・一括鉛被型８心架橋ポリエチレン
絶縁海底ケーブル、１０．１０’・・・分岐箱、１１．
１１’・・・終端箱、１２．１２’・・・給ガス管、１
８．１８’・・・ガスボンベ、１４．１４’・・・減圧
弁、１５．１５’・・・圧力ゲージ、１６・・・警報装
置。
７１図FIGS. 1(A), 1(C), and 1(C) are cross-sectional views each showing an example of the structure of a conventional submarine cable. FIG. 2 is a configuration diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Conductor, 2... Insulating layer, 3... Copper tape shield, 4.7... Inclusion, 5... Iron wire armor, 6,8
...Lead sheathing, 9...Bulk lead-sheathed 8-core cross-linked polyethylene insulated submarine cable, 10.10'...Branch box, 11.
11'...Terminal box, 12.12'...Gas supply pipe, 1
8.18'... Gas cylinder, 14.14'... Pressure reducing valve, 15.15'... Pressure gauge, 16... Alarm device. Figure 71
Claims (2)
ン絶縁海底ケーブルの両端又は片端に、前記ガス通路に
ガスを補給する給ガス装置を設けたことを特徴とする給
ガス装置付き海底ケーブル。(1) A submarine cable with a gas supply device, characterized in that a gas supply device for replenishing gas to the gas passage is provided at both ends or one end of a single lead-sheathed three-core cross-linked polyethylene insulated submarine cable having a gas passage. .
圧力の低下全検知する警報装置を有する特許請求の範囲
第１項記載の給ガス装置付き海底ケーブル(2) The submarine cable with a gas supply device according to claim 1, wherein the gas supply device has an alarm device that detects any drop in pressure in the gas passage of the submarine cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11572381A JPS5816408A (en) | 1981-07-22 | 1981-07-22 | Submarine cable with gas supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11572381A JPS5816408A (en) | 1981-07-22 | 1981-07-22 | Submarine cable with gas supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5816408A true JPS5816408A (en) | 1983-01-31 |
Family
ID=14669525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11572381A Pending JPS5816408A (en) | 1981-07-22 | 1981-07-22 | Submarine cable with gas supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816408A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002042570A (en) * | 2000-07-19 | 2002-02-08 | Sumitomo Electric Ind Ltd | Rubber or plastic insulated power submarine cable |
-
1981
- 1981-07-22 JP JP11572381A patent/JPS5816408A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002042570A (en) * | 2000-07-19 | 2002-02-08 | Sumitomo Electric Ind Ltd | Rubber or plastic insulated power submarine cable |
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