JPH07211156A - Power cable line - Google Patents
Power cable lineInfo
- Publication number
- JPH07211156A JPH07211156A JP6018876A JP1887694A JPH07211156A JP H07211156 A JPH07211156 A JP H07211156A JP 6018876 A JP6018876 A JP 6018876A JP 1887694 A JP1887694 A JP 1887694A JP H07211156 A JPH07211156 A JP H07211156A
- Authority
- JP
- Japan
- Prior art keywords
- electric cable
- line
- pipe
- cable line
- electric
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
- H02G1/086—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using fluid as pulling means, e.g. liquid, pressurised gas or suction means
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Insulated Conductors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、大容量の電力を長距離
輸送する直接冷却型電力ケーブル線路または、飲料水な
どの流体の通路と電力ケーブルまたは情報を供給するた
めの通信ケーブルなどの電気ケーブルを、管路内に共に
配置させて形成した複合型電気ケーブル線路など（以
下、電気ケーブル線路という）に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct cooling type power cable line for transporting a large amount of electric power over a long distance, or a passage for a fluid such as drinking water and an electric cable such as a communication cable for supplying information. The present invention relates to a composite type electric cable line formed by arranging cables together in a conduit (hereinafter referred to as an electric cable line).
【０００２】[0002]
【従来の技術】大容量の電力を送る電力ケーブルでは、
送電時に導体に発生するオーム損や金属被覆層に発生す
る渦電流損により発熱し、その絶縁体を熱劣化させる恐
れがある。このため、電力ケーブルの絶縁体層を長期間
にわたって熱劣化から守るためには、電力ケーブル線路
の長手方向に連続的に冷却用液体などを流して、電力ケ
ーブルより発生した熱を除去する必要がある。この電力
ケーブルより発生した熱の除去方法には、強制冷却方式
と呼ばれ、電力ケーブル内部に冷媒通路を設ける内部
冷却方式、電力ケーブルを密閉型の冷媒管路内に収容
して管路と電気ケーブル間に冷却液を流す外部直接冷却
方式、電力ケーブルに隣接して密閉型の冷媒管路を配
置する間接冷却方式の３通りの方式がある。2. Description of the Related Art In a power cable for transmitting a large amount of power,
There is a possibility that heat will be generated due to ohmic loss generated in the conductor during power transmission and eddy current loss generated in the metal coating layer, and the insulator will be thermally deteriorated. For this reason, in order to protect the insulating layer of the power cable from thermal deterioration for a long period of time, it is necessary to continuously flow a cooling liquid or the like in the longitudinal direction of the power cable line to remove the heat generated from the power cable. is there. This method of removing the heat generated from the power cable is called a forced cooling method, an internal cooling method in which a refrigerant passage is provided inside the power cable, and the power cable is housed in a sealed refrigerant pipeline to connect the pipeline and the electric line. There are three types of methods: an external direct cooling method in which a cooling liquid flows between cables, and an indirect cooling method in which a sealed refrigerant pipe line is arranged adjacent to a power cable.
【０００３】の方式については、短距離線路の冷却に
は大きな効果があるが、長距離線路では極度に冷却効率
が低下する恐れがある。また、の方式については、線
路の保守が容易であるという利点があるが、もともと冷
却効率が低く、トータルコスト的に有利とは言えない。
一方、の直接冷却方式では、冷媒に水を使用すれば、
特に大きな冷却効果が出る上に長距離線路でも冷却管路
内の圧力損失が少なく、大容量の長距離電力ケーブルの
冷却には最も適した方式である。従来、の外部直接水
冷方式においては、２００〜２５０ｍｍと言う大口径の
パイプ（水冷管）を洞道内に布設し、その中に電力ケー
ブルを引き込み、管路接続部や管路端におけるケーブル
取り出し部の液体シールを十分に施した上で、冷媒であ
る水を流通させる方式が採用されている。The method (1) has a great effect on the cooling of the short distance line, but the cooling efficiency may be extremely lowered in the long distance line. In addition, the method (1) has an advantage that the maintenance of the line is easy, but the cooling efficiency is originally low, and it cannot be said to be advantageous in total cost.
On the other hand, in the direct cooling method, if water is used as the refrigerant,
This is the most suitable method for cooling a large-capacity long-distance power cable because it has a particularly large cooling effect and has little pressure loss in the cooling pipe even in a long-distance line. In the conventional external direct water cooling system, a large-diameter pipe (water cooling pipe) of 200 to 250 mm is laid in a cave, and a power cable is drawn into the pipe, and a cable connection part or a cable extraction part at a pipe end. The method of circulating water, which is a refrigerant, after sufficiently sealing the liquid is used.
【０００４】[0004]
【発明が解決しようとする課題】しかし、この直接冷却
型電力ケーブル線路方式では、大容量の長距離線路の構
築に際し、水冷管の輸送および布設と電力ケーブルの輸
送および布設と２回の作業が行われるため、工期が長
く、施工コストも高価となり問題とされてきた。一方、
離島に飲料水と電力や情報を送る場合、従来は、飲料水
を送る海底送水管と電力や情報を送る海底電気ケーブル
とを、それぞれ別個に布設していた。このような海底で
の長尺線路の構築は、使用する海底送水管や海底電気ケ
ーブルのコストに比べて、海底送水管や海底電気ケーブ
ルの布設のためのコストの方が相対的に高くなることか
ら、海底送水管と海底電気ケーブルとを別個に布設する
ことは経済的に問題視されている。上述のような問題を
解決するために、製造段階にて、管路内に液体通路が形
成されるように電気ケーブルを挿入配置させた構造の電
気ケーブル線路が考えられている。しかしながら、この
ような構造にした直接冷却型電力ケーブル線路や複合型
電気ケーブル線路では、その製造時や布設時において次
のような問題点がある。However, in this direct cooling type power cable line system, when constructing a large-capacity long-distance line, transportation and installation of water-cooled pipes and transportation and installation of power cables are performed twice. Since it is carried out, the construction period is long and the construction cost is high, which has been a problem. on the other hand,
When sending drinking water and electric power or information to a remote island, conventionally, a submarine water pipe for sending drinking water and a submarine electric cable for sending electric power or information have been separately laid. Construction of such a long line on the seabed requires that the cost of laying the seabed water pipe or the seabed electric cable is relatively high compared to the cost of the seawater pipe pipe or the seabed electric cable used. Therefore, it is economically problematic to separately install the submarine water pipe and the submarine electrical cable. In order to solve the above-mentioned problem, an electric cable line having a structure in which an electric cable is inserted and arranged so that a liquid passage is formed in a pipe line at a manufacturing stage is considered. However, the direct cooling type power cable line and the composite type electric cable line having such a structure have the following problems at the time of manufacturing or laying them.
【０００５】即ち、管路内に液体通路が形成されるよう
に挿入配置した電気ケーブル線路では、通常、電気ケー
ブルが管路に固定されていないため、当該電気ケーブル
線路を勾配のある場所に布設する場合、管路には勾配に
より張力が発生する。同時に、前記管路内に挿入配置さ
れた電気ケーブルにも張力が発生するため、管路に発生
する張力を無限軌道式引取機などにより管路の上下両壁
面が電気ケーブルと接するまで偏平させて管路壁を介し
て保持する必要がある。もし、管路内の電気ケーブルに
発生する張力を管路に無限軌道式引取機などにより加え
た側圧で保持できなければ、電気ケーブルは前記管路か
ら抜け落ちるといったトラブルが発生する。また、勾配
のある場所に布設することにより、管路内の電気ケーブ
ルに発生する張力を電気ケーブルの端部のみで負担すれ
ば、電気ケーブルが破断する危険性がある。特に、この
問題は、電気ケーブル線路が長くなるにしたがって、そ
の危険性は増すものである。That is, in an electric cable line inserted and arranged so that a liquid passage is formed in the pipe line, the electric cable line is usually not fixed to the pipe line, so that the electric cable line is laid in a place having a slope. If this is the case, tension will be generated in the pipeline due to the gradient. At the same time, since tension is also generated in the electric cable inserted and arranged in the pipeline, flatten the tension generated in the pipeline until the upper and lower wall surfaces of the pipeline come into contact with the electrical cable with a tracked take-up machine or the like. It must be retained via the conduit wall. If the tension generated in the electric cable in the pipeline cannot be maintained by the lateral pressure applied to the pipeline by the endless track type taker or the like, the electric cable may fall out of the pipeline. Further, if the tension is generated in the electric cable in the pipeline by laying it in a place having a slope, there is a risk that the electric cable will break. In particular, this problem is exacerbated as the length of the electric cable line increases.
【０００６】一方、流体輸送用管の肉厚は、流体圧力に
よって決められるが、通常は管内径の１０％程度であ
り、管路材には比較的強度の高い高密度ポリエチレンが
使用されることが多い。従って、このような流体輸送用
管を上記の如き管路内に液体通路が形成されるように挿
入配置される電気ケーブル線路の管路用として用いた場
合、構成された電気ケーブル線路の布設時などにおい
て、無限軌道式引取機で前記管路に側圧を加えて偏平化
させ、中の電気ケーブルをも保持しようとすると、能力
の大きな無限軌道式引取機が必要となり、不経済である
ばかりでなく、管路が割れるといった問題が生じる。こ
のことは、かかる構造の電気ケーブル線路の製造時の巻
き取りにおいても発生する問題でもある。かかる問題点
を解決するために、管路の肉厚を全周にわたって薄くす
ることが考えられるが、管路を薄肉にすると電気ケーブ
ル線路が洞道内や海底に布設される時に、管路が洞道や
海底とこすれたり、特に海底布設の場合には布設後に外
傷を受けることがあるため、全周を薄肉化することは外
傷防止という点で望ましいものではない。本発明は、上
記の如き事柄に着目し、大容量の電力を輸送するための
直接冷却型電力ケーブル線路、または飲料水などの流体
の通路と電力や情報を供給するための電気ケーブルを複
合させた複合型電気ケーブル線路などを、一回の輸送と
容易な布設作業により構築できる経済的な電気ケーブル
線路を提供することを目的とするものである。On the other hand, the wall thickness of the fluid transportation pipe is determined by the fluid pressure, but it is usually about 10% of the inner diameter of the pipe, and high-density polyethylene having relatively high strength is used for the pipe line material. There are many. Therefore, when such a fluid transport pipe is used for a conduit of an electric cable line inserted and arranged so that a liquid passage is formed in the conduit as described above, when the constructed electric cable line is laid, In such a case, if an endless track take-up machine is used to flatten the pipe line by applying lateral pressure to hold the electric cable inside, a large-capacity endless track take-up machine is required, which is uneconomical. However, there is a problem that the pipe is broken. This is also a problem that occurs in winding the electric cable line having such a structure during manufacturing. In order to solve this problem, it is conceivable to reduce the wall thickness of the pipeline all around.However, if the pipeline is thin, the pipeline will be cut when the electric cable line is laid in the cave or the seabed. Since it may be rubbed against the road or the seabed, and especially when the seabed is laid, it may be damaged after laying it. Therefore, it is not desirable to reduce the thickness of the entire circumference from the viewpoint of preventing damage. The present invention focuses on the above matters and combines a direct cooling type power cable line for transporting a large amount of electric power, or a passage for a fluid such as drinking water and an electric cable for supplying electric power and information. It is an object of the present invention to provide an economical electric cable line capable of constructing a composite type electric cable line or the like by one-time transportation and easy installation work.
【０００７】[0007]
【課題を解決するための手段】即ち、本発明の電気ケー
ブル線路は、例えば、図１に示す如く、管路１内に液体
通路２ａが形成されるように電気ケーブル２が収納され
てなる電気ケーブル線路であって、前記管路１がプラス
チック製管２１からなり、管の内面に長手方向に沿って
半円弧状の溝を形成して相対向するように２条の薄肉部
２０を２組直交させて設けたものであることを特徴とす
るものである。図示しないが、２条の薄肉部２０を１組
設けるようにしてもよい。That is, an electric cable line according to the present invention is an electric cable line in which an electric cable 2 is housed so that a liquid passage 2a is formed in a pipe line 1 as shown in FIG. In the cable line, the conduit 1 is made of a plastic pipe 21, and two sets of two thin-walled portions 20 are formed so as to face each other by forming a semi-arcuate groove along the longitudinal direction on the inner surface of the pipe. It is characterized by being provided orthogonally. Although not shown, one set of two thin portions 20 may be provided.
【０００８】前記薄肉部２０は、プラスチック製管２１
の内面ばかりでなく、外面にも形成して、また外面にの
み溝を形成して設けるようにしても良い。なお、本発明
において電気ケーブル２とは、金属導体を用いた各種の
電力ケーブル、信号ケーブル、通信ケーブル、および光
ファイバを用いた各種の通信ケーブルおよび前記ケーブ
ル類を種々組み合わせた複合ケーブルなど電力または各
種の情報を送るためのケーブルを総称して用いているも
のである。本発明の電気ケーブル線路にて、電気ケーブ
ル２を収納する管路１に用いられる管路材料としては、
高密度ポリエチレンがコストや特性上最も適している
が、使用環境によってはＦＲＰ、ポリ塩化ビニルまたは
ナイロンなども用いられる。The thin portion 20 is made of a plastic pipe 21.
It may be formed not only on the inner surface but also on the outer surface, and the groove may be formed only on the outer surface. In the present invention, the electric cable 2 includes various power cables using metal conductors, signal cables, communication cables, various communication cables using optical fibers, and composite cables in which the above cables are variously combined. Cables for sending various types of information are used generically. In the electric cable line of the present invention, as the conduit material used for the conduit 1 that houses the electric cable 2,
High-density polyethylene is most suitable in terms of cost and characteristics, but FRP, polyvinyl chloride, nylon, etc. are also used depending on the use environment.
【０００９】管路１は通常の送水圧の場合、例えば、ポ
リエチレン製管などのプラスチック製管では内径の１０
％程度の肉厚で充分であるが、より高い冷却効率が必要
な場合、送水圧を高めることによって対応すると良い。
その場合、管路１の耐圧強度を増加させる必要があり、
外周にステンレス製テープなどの金属製テープやアラミ
ド繊維などの高強度繊維製の織布テープ、超高分子量ポ
リエチレンの一軸延伸テープなどを短ピッチで巻付けた
補強層２２を設けると良い。また、電気ケーブル線路の
挙動吸収のためにスネーク取り布設を行う必要のあるも
のでは、管路１の可撓性を良くするため、通常は管路１
の肉厚は、管内径の１０％程度の肉厚であるところを１
０％未満に薄くして、その外周にステンレス製テープな
どの金属製テープやアラミド繊維などの高強度繊維製の
織布テープ、超高分子量ポリエチレンの一軸延伸テープ
などを短ピッチで巻付けた補強層２２を設けて圧力を保
持させるようにするとよい。また、電気ケーブル線路に
おいて、管路１内に挿入配置される電気ケーブル２の外
径が、管路１の内径に対して比較的小さく、使用流体圧
力が高い条件で使用されるものである場合には、管路１
の耐圧強度を増加させる必要がある。そのようなもので
は、管路の外周にステンレス製テープなどの金属製テー
プやアラミド繊維などの高強度繊維製の織布テープ、超
高分子量ポリエチレンの一軸延伸テープなどを短ピッチ
で巻付けた補強層２２を設けて圧力を保持させるように
するとよい。更に、必要に応じて、前記補強層２２を外
傷から保護するために、ポリエチレン、ポリ塩化ビニル
などによる保護層２３を施してもよい。また、電気ケー
ブル線路が海底に布設されるものである場合には、前記
補強層２２上に長ピッチに鉄線やＦＲＰ線を周巻して軸
力補強層を設けると良い。以上のように本発明の電気ケ
ーブル線路の管路１は、材質、使用温度、使用流体の圧
力、挿入される電気ケーブル１の外径およびスネーク取
り布設の有無などにより、最適な肉厚、管壁の複数の薄
肉部２０の数および補強層２２を設けた構造とするなど
管路の構成を選定するとよい。The pipe line 1 has an inner diameter of 10 in the case of normal water pressure, for example, a plastic pipe such as a polyethylene pipe.
Although a wall thickness of about 10% is sufficient, if higher cooling efficiency is required, it is better to increase the water supply pressure.
In that case, it is necessary to increase the pressure resistance of the pipeline 1.
It is advisable to provide a reinforcing layer 22 around the outer periphery of which a metal tape such as a stainless steel tape, a woven fabric tape made of high-strength fiber such as aramid fiber, or a uniaxially stretched tape of ultrahigh molecular weight polyethylene is wound at a short pitch. Also, in the case where it is necessary to install the snake to lay down the behavior of the electric cable line, in order to improve the flexibility of the pipe line 1, the pipe line 1 is usually used.
The wall thickness of 1 is about 10% of the inner diameter of the pipe.
Reinforcing by thinning it to less than 0%, and winding metal tape such as stainless steel tape, woven tape made of high-strength fiber such as aramid fiber, and uniaxially stretched tape of ultra high molecular weight polyethylene at a short pitch on the outer circumference. Layer 22 may be provided to maintain pressure. Further, in the electric cable line, the outer diameter of the electric cable 2 inserted and arranged in the conduit 1 is relatively smaller than the inner diameter of the conduit 1 and is used under the condition that the fluid pressure is high. In pipeline 1
It is necessary to increase the pressure resistance of the. In such cases, metal tape such as stainless steel tape, woven tape made of high-strength fiber such as aramid fiber, and uniaxially-stretched tape of ultra-high molecular weight polyethylene are wrapped around the outer circumference of the pipeline at a short pitch for reinforcement. Layer 22 may be provided to maintain pressure. Furthermore, if necessary, a protective layer 23 made of polyethylene, polyvinyl chloride, or the like may be provided to protect the reinforcing layer 22 from external damage. In addition, when the electric cable line is laid on the seabed, it is preferable to provide an axial force reinforcing layer on the reinforcing layer 22 by winding iron wire or FRP wire at a long pitch. As described above, the pipe line 1 of the electric cable line of the present invention has an optimum wall thickness, It is advisable to select the configuration of the conduit such as the number of the plurality of thin portions 20 of the wall and the structure in which the reinforcing layer 22 is provided.
【００１０】[0010]
【作用】本発明の電気ケーブル線路は、その管路１がプ
ラスチック製管からなり、管の長手方向に沿って相対向
するように複数の薄肉部２０を設けたものであるため、
前記管路に無限軌道式引取機などにより側圧を加えると
管内面に設けた前記複数の薄肉部２０を介して管路１は
その上下両壁面が収納されている電気ケーブルと接する
まで容易に偏平させ得るので、管路１と収納されている
電気ケーブル２とを同時に保持できる。従って、長尺の
電気ケーブル線路の製造も、また、管路１からの収納電
気ケーブル２の抜け落ちなどを起こさずに線路の布設作
業も容易に行える。In the electric cable line of the present invention, the pipe line 1 is made of a plastic pipe, and a plurality of thin portions 20 are provided so as to face each other along the longitudinal direction of the pipe.
When lateral pressure is applied to the pipeline by an endless track type take-up machine or the like, the pipeline 1 is easily flattened until the upper and lower wall surfaces of the pipeline 1 come into contact with the electric cables through the plurality of thin portions 20 provided on the inner surface of the pipeline. Therefore, the conduit 1 and the electric cable 2 accommodated therein can be held at the same time. Therefore, it is possible to easily manufacture a long electric cable line and also to lay a line without causing the stored electric cable 2 to fall out of the conduit 1.
【００１１】[0011]
【実施例】以下、本発明の電気ケーブル線路を実施例を
挙げ図面を用いて説明する。 実施例 図２は、本発明の電気ケーブル線路の一実施例である直
接冷却型電力ケーブル線路の断面説明図である。電力ケ
ーブル２は、銅素線を撚合わせ、断面形状を扇型に圧縮
成形したセグメント同士を、更に断面円形に撚合わせて
なる導体１１の外側に、架橋ポリエチレンからなる絶縁
体層１２、銅素線をロングピッチに巻いて形成したワイ
ヤーシールド層１３、ステンレス薄板を丸め、その連続
突き合わせ部を溶接したのち、軸方向に波付け加工して
なる金属被覆層１４およびポリエチレン被覆層１５から
なっている。１は管路で、ポリエチレン製管２１で構成
される。前記ポリエチレン製管２１の内面に管の長手方
向に沿って相対向するように半円弧状の溝を形成して、
形成した２条の薄肉部２０を２組直交させて設けてあ
り、その外側にアラミド繊維製の織布テープを巻付けた
補強層２２を介してポリエチレン防食層２３を設けた構
造とされている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The electric cable line of the present invention will be described below with reference to the accompanying drawings. Example FIG. 2 is a cross-sectional explanatory view of a direct cooling type power cable line which is an example of the electric cable line of the present invention. The power cable 2 comprises a conductor 11 formed by twisting copper strands and compression-molding segments having a fan-shaped cross-section into a circular cross-section. It is composed of a wire shield layer 13 formed by winding a wire at a long pitch, a stainless steel thin plate rounded, welded at its continuous abutting portions, and then corrugated in the axial direction to form a metal coating layer 14 and a polyethylene coating layer 15. . Reference numeral 1 denotes a conduit, which is composed of a polyethylene pipe 21. Forming semi-arcuate grooves on the inner surface of the polyethylene pipe 21 so as to face each other along the longitudinal direction of the pipe,
Two sets of the formed two thin-walled portions 20 are provided orthogonally to each other, and a polyethylene anticorrosive layer 23 is provided on the outer side of the two thinned portions 20 with a reinforcing layer 22 around which a woven fabric tape made of aramid fiber is wound. .
【００１２】本発明の電気ケーブル線路の布設作業性を
調べるため、以下のような試験を行った。内径２００ｍ
ｍ、肉厚２０ｍｍで、管の内面に管の長手方向に４０ｍ
ｍ幅で深さ約１０ｍｍの断面半円状の薄肉部を互いに１
８０°の相対向位置にそれぞれ設けた高密度ポリエチレ
ン製管内に、外径１２０ｍｍの電気ケーブルを１本挿入
配置させた本発明の電気ケーブル線路について、前記高
密度ポリエチレン製管の内面の薄肉部の位置が圧縮方向
と垂直になるようにして上下から圧縮したところ、４８
００ｋｇ／ｍの荷重で中の電気ケーブルに高密度ポリエ
チレン製管の内面が接触した。比較のため、内外面に何
ら薄肉部を設けない内径２００ｍｍ、肉厚２０ｍｍの高
密度ポリエチレン製管内に、外径１２０ｍｍの電気ケー
ブルを１本挿入配置させた電気ケーブル線路について、
前記高密度ポリエチレン製管の上下から圧縮したとこ
ろ、高密度ポリエチレン製管は５０００ｋｇ／ｍの荷重
で約九％偏平化したが、中の電気ケーブルに高密度ポリ
エチレン製管の内面は接触しなかった。以上の試験か
ら、本発明の電気ケーブル線路が無限軌道式引取機など
により、側圧を加えることにより、その管路１を容易に
偏平させ得ることができ、電気ケーブル線路の構築に際
して管路１と収納した電気ケーブル２とを一緒に保持し
て布設作業を行えることが確認できた。The following tests were conducted in order to investigate the workability of laying the electric cable line of the present invention. 200m inside diameter
m, wall thickness 20 mm, 40 m in the longitudinal direction of the pipe on the inner surface of the pipe
One thin-walled part with a semi-circular cross section of m width and depth of about 10 mm
Regarding the electric cable line of the present invention in which one electric cable having an outer diameter of 120 mm is inserted and arranged in the high-density polyethylene pipes provided at 80 ° opposite positions, the thin-walled portion of the inner surface of the high-density polyethylene pipe is used. When compressed from above and below with the position perpendicular to the compression direction, 48
The inner surface of the high-density polyethylene pipe came into contact with the inside electric cable at a load of 00 kg / m. For comparison, an electric cable line in which one electric cable having an outer diameter of 120 mm is inserted and arranged in a high-density polyethylene pipe having an inner diameter of 200 mm and a wall thickness of 20 mm without providing any thin portion on the inner and outer surfaces,
When the high-density polyethylene pipe was compressed from above and below, the high-density polyethylene pipe was flattened by about 9% under a load of 5000 kg / m, but the inner surface of the high-density polyethylene pipe did not come into contact with the inside electric cable. . From the above test, the electric cable line of the present invention can be easily flattened by applying a lateral pressure by an endless track type take-off machine or the like, and when the electric cable line is constructed, It was confirmed that the stored electric cable 2 could be held together to perform the laying work.
【００１３】[0013]
【発明の効果】以上、本発明の電気ケーブル線路は、一
回の輸送と布設により、直接冷却型電力ケーブル線路
や、飲料水などの流体の通路と電力や情報を供給するた
めの電気ケーブルを複合させた複合型電気ケーブル線路
などの電気ケーブル線路が構築できる。しかも電気ケー
ブル線路の製造時や線路の構築に際して、無限軌道式引
取機などにより管路１に側圧を加えることにより管路１
を比較的に容易に偏平化でき、管路１と共に管路１内に
収納した電気ケーブル２をも一緒に保持できる。従っ
て、収納した電気ケーブル２が管路１から抜け出すこと
がないので、電気ケーブル線路の製造作業や線路の構築
のための電気ケーブル線路の布設作業が容易に行える。INDUSTRIAL APPLICABILITY As described above, the electric cable line of the present invention is provided with a direct cooling type power cable line, a passage for a fluid such as drinking water, and an electric cable for supplying electric power and information by one transportation and installation. It is possible to construct electric cable lines such as composite type electric cable lines. Moreover, at the time of manufacturing the electric cable line or constructing the line, a lateral pressure is applied to the line 1 by an endless track type take-up machine, etc.
Can be relatively easily flattened, and the electric cable 2 housed in the pipe 1 can be held together with the pipe 1. Therefore, since the stored electric cable 2 does not come out of the conduit 1, the work of manufacturing the electric cable line and the work of laying the electric cable line for constructing the line can be easily performed.
【図１】本発明の電気ケーブル線路の構造を説明するた
めの断面説明図である。FIG. 1 is a cross-sectional explanatory view for explaining a structure of an electric cable line of the present invention.
【図２】本発明の電気ケーブル線路の一実施例である直
接冷却型電力ケーブル線路の断面図である。FIG. 2 is a cross-sectional view of a direct cooling type power cable line which is an embodiment of the electric cable line of the present invention.
１・・・・管路 ２・・・・電気ケーブル ２ａ・・・液体通路 １１・・・・導体 １２・・・・架橋ポリエチレン絶縁体層 １３・・・・ワイヤーシールド層 １４・・・・金属被覆層 １５・・・・ポリエチレン被覆層 ２０・・・・薄肉部 ２１・・・・プラスチック製管 ２２・・・・補強層 ２３・・・・保護層 1 ... ・ Pipe line 2 ・ ・ ・ ・ Electric cable 2a ・ ・ ・ Liquid passage 11 ・ ・ ・ ・ Conductor 12 ・ ・ ・ ・ Crosslinked polyethylene insulator layer 13 ・ ・ ・ Wire shield layer 14 ・ ・ ・ Metal Coating layer 15 ··· Polyethylene coating layer 20 ··· Thin portion 21 ··· Plastic pipe 22 ··· Reinforcing layer 23 ··· Protective layer
Claims (5)
気ケーブルが収納されてなる電気ケーブル線路であっ
て、前記管路がプラスチック製管からなり、管の長手方
向に沿って相対向するように複数の薄肉部を設けたもの
であることを特徴とする電気ケーブル線路。1. An electric cable line in which an electric cable is housed so that a liquid passage is formed in the pipe line, the pipe line being made of a plastic pipe and facing each other along a longitudinal direction of the pipe. An electric cable line characterized in that a plurality of thin-walled portions are provided as described above.
リエチレン製管であることを特徴とする請求項１記載の
電気ケーブル線路。2. The electric cable line according to claim 1, wherein the plastic pipe forming the pipe line is a polyethylene pipe.
に補強層が設けられていることを特徴とする請求項１記
載の電気ケーブル線路。3. The electric cable line according to claim 1, wherein a reinforcing layer is provided on the outer periphery of the plastic pipe forming the pipe line.
ーブル線路であることを特徴とする請求項１記載の電気
ケーブル線路。4. The electric cable line according to claim 1, wherein the electric cable line is a direct cooling type power cable line.
の通路と電力ケーブルまたは情報を供給するための通信
ケーブルなどの電気ケーブルとを、管路内に共に配置さ
せて形成した複合型電気ケーブル線路であることを特徴
とする請求項１記載の電気ケーブル線路。5. A composite electric cable in which an electric cable line is formed by arranging a passage for a fluid such as drinking water and an electric cable such as a power cable or a communication cable for supplying information together in a pipeline. The electric cable line according to claim 1, which is a line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6018876A JPH07211156A (en) | 1994-01-19 | 1994-01-19 | Power cable line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6018876A JPH07211156A (en) | 1994-01-19 | 1994-01-19 | Power cable line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07211156A true JPH07211156A (en) | 1995-08-11 |
Family
ID=11983763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6018876A Pending JPH07211156A (en) | 1994-01-19 | 1994-01-19 | Power cable line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07211156A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1241756A2 (en) * | 2001-02-24 | 2002-09-18 | Alcatel | Process for installation of cables and cables for installation in drinking water pipe |
| US10636546B2 (en) | 2016-07-29 | 2020-04-28 | Fujikura Ltd. | Power supply cable and connector-equipped power supply cable |
| CN114464363A (en) * | 2021-12-20 | 2022-05-10 | 华为数字能源技术有限公司 | Liquid cooling cable, charging gun and charging equipment |
| WO2024032758A1 (en) * | 2022-08-12 | 2024-02-15 | 长春捷翼汽车科技股份有限公司 | Novel cable |
-
1994
- 1994-01-19 JP JP6018876A patent/JPH07211156A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1241756A2 (en) * | 2001-02-24 | 2002-09-18 | Alcatel | Process for installation of cables and cables for installation in drinking water pipe |
| EP1241756A3 (en) * | 2001-02-24 | 2003-09-17 | Alcatel | Process for installation of cables and cables for installation in drinking water pipe |
| US10636546B2 (en) | 2016-07-29 | 2020-04-28 | Fujikura Ltd. | Power supply cable and connector-equipped power supply cable |
| CN114464363A (en) * | 2021-12-20 | 2022-05-10 | 华为数字能源技术有限公司 | Liquid cooling cable, charging gun and charging equipment |
| WO2024032758A1 (en) * | 2022-08-12 | 2024-02-15 | 长春捷翼汽车科技股份有限公司 | Novel cable |
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