JPS63314114A - Laying system for cable - Google Patents
Laying system for cableInfo
- Publication number
- JPS63314114A JPS63314114A JP63110755A JP11075588A JPS63314114A JP S63314114 A JPS63314114 A JP S63314114A JP 63110755 A JP63110755 A JP 63110755A JP 11075588 A JP11075588 A JP 11075588A JP S63314114 A JPS63314114 A JP S63314114A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- cooling pipe
- strips
- spacer
- cables
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 125000006850 spacer group Chemical group 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 230000006698 induction Effects 0.000 abstract description 6
- 241000270295 Serpentes Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Electric Cable Installation (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はケーブルの布設方式に係り、特に、1回線3相
分のケーブルをその冷却管とともに1トラフ内に設ける
ケーブルの布設方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cable installation method, and more particularly to a cable installation method in which cables for one line and three phases are provided together with their cooling pipes in one trough.
従来の、この種のケーブルの布設方式を、第2図及び第
3図によって説明する。これらの図において、1はトラ
フ、2はケーブル、3.31゜32は冷却管を示す。A conventional cable installation method of this type will be explained with reference to FIGS. 2 and 3. In these figures, 1 is a trough, 2 is a cable, and 3.31°32 is a cooling pipe.
第2図に示す方式は、ケーブル2の3相が俵積状に布設
され、そのトラフ1内の上部両かどに冷却管31.32
が布設されているもので、この方式は、近接する制御線
等への誘導は小さいがシース渦電流損失は大である。又
、第3図に示す方式は、ケーブル2の3相が隣接相聞を
分離して三角形に配置され、そのトラフ1内の上部に冷
却管3が布設されているもので、この方式はシース渦電
流損失を小さくできるが、トラフ1が著しく大きなもの
となり、従って、大きな洞道を必要とする。In the system shown in FIG.
This system has a small amount of induction into nearby control lines, etc., but the sheath eddy current loss is large. In addition, in the method shown in FIG. 3, the three phases of the cable 2 are arranged in a triangle with adjacent phases separated, and the cooling pipe 3 is installed in the upper part of the trough 1. This method uses a sheath vortex. Although current losses can be reduced, the trough 1 becomes significantly larger and therefore requires a larger tunnel.
これら、俵積布設のものと三角形配置布設のものとを、
275KV1X2000m20Fケープルについて、そ
のシース渦電流過失率と制御線誘起電圧とを比較すると
次表のようになる。These are the one with bale stacking and the one with triangular layout.
A comparison of the sheath eddy current failure rate and control line induced voltage for a 275KV1X2000m20F cable is as shown in the following table.
表
尚、正三角形配置布設の場合の相間隔は260M、相分
離布設の場合の相間隔は480#とし、制御線とケーブ
ルとの間隔は700履で実験されたものである。In the table, the phase spacing in the case of installation in an equilateral triangle arrangement was 260M, the phase spacing in the case of phase separation installation was 480#, and the experiment was conducted with the spacing between the control line and the cable being 700M.
この実験結果は、ケーブル2の3相聞を離間させること
によりシース渦電流損失を小さくすることができるが、
隣接相間隔を大にするとトラフ1が大きくなり、その洞
道も必然的に大きくしなければならなくなることを示し
、ケーブル布設上問題になっていた。This experimental result shows that sheath eddy current loss can be reduced by separating the three phases of cable 2, but
If the distance between adjacent phases is increased, the trough 1 becomes larger, which means that the tunnel must also be made larger, which poses a problem in cable installation.
本発明の目的は、上記問題点を解決し、シース渦電流損
失、並びに制御線への誘導が共に小さく、かつ小形なト
ラフ内に収納できるケーブルの布設方式を提供すること
にある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a cable installation method that reduces both sheath eddy current loss and control line induction, and can be housed in a small trough.
即ち、本発明は、1回線3相分のケーブル及びその冷I
JIt2.を1トラフ内に設けるケーブルの布設方式に
おいて、この布設線路中の所定間隔毎に、3条のケーブ
ルが正三角形の各頂点を占めるように配置されていて、
その内側の中心にスペーサーを介して冷却管1条が添設
されている配置の横断面を有する布設構造を設け、更に
その中間の所要箇所に、3条のケーブルが正三角形の各
頂点に配置されていて、その中心にスペー1ナーで支持
される1条の冷却管が添設されているとともに、上記正
三角形の頂部のケーブルと底部の2条のケーブルとの間
に設けた中段支えによって支持される2条の冷却管が頂
部のケーブルの両側に添設されている配置の布設構造を
設けることを特徴とするものである。That is, the present invention provides cables for one line, three phases, and their cold I.
JIt2. In a cable laying method in which a cable is installed in one trough, three cables are arranged at predetermined intervals in the laying line so as to occupy each vertex of an equilateral triangle,
A laying structure with a cross section in which one cooling pipe is attached via a spacer is provided at the center of the inside, and three cables are placed at each vertex of an equilateral triangle at required locations in the middle. A single cooling pipe supported by a spacer is attached to the center, and a middle support is provided between the cable at the top of the equilateral triangle and the two cables at the bottom. It is characterized by providing a laying structure in which two supported cooling pipes are attached to both sides of the cable at the top.
以下、本発明の一実施例を第1図(イ)、(ロ)を参照
して説明する。第1図(イ)は3条のケーブルに冷却管
1条が添設される部分の横断面の概要を説明するための
図、同図(ロ)は3条のケーブルに沿って3条の冷却管
が添設される部分の横断面の概要を説明するための図で
ある。An embodiment of the present invention will be described below with reference to FIGS. 1(A) and 1(B). Figure 1 (a) is a diagram for explaining the outline of the cross section of the part where one cooling pipe is attached to three cables, and the same figure (b) is a diagram for explaining the outline of the cross section of the part where one cooling pipe is attached to three cables. It is a figure for explaining the outline of the cross section of the part to which a cooling pipe is attached.
第1図(イ)において、21.22.23は1回線3相
分のケーブルで正三角形の各頂点を占めるように配置さ
れており、その中心にスペーサー4を介して冷却管3が
設けられている。即ち、ケーブル21,22.23は、
形状が正三角形のスペーサ−4の各頂点に形成された凹
部に係合する状態で配設されていて、各々が冷却管3と
ほぼ等距離の位置にある。この布設構造は、ケーブル2
1.22.23と冷却管3が上記の位N関係を有してコ
ンパクトに纏められているので、トラフ1を小形化でき
るとともに、例えば第2図の従来方式等に較べてシース
渦電流の損失を低減でき、又、近接する制御線の誘導も
比較的小さい。又、ケーブル21.22..23および
冷却管3の別々な熱挙動を許容でき、更には又、スペー
サー4の形状を変えることによってケーブル21,22
゜23を任意の間隔に配置することもできる。上記第1
図(イ)に示す布設構造は、ケーブル布設線路の長手方
向に一定間隔で設けられる。In Fig. 1 (a), cables 21, 22, and 23 are for one line and three phases, and are arranged so as to occupy each vertex of an equilateral triangle, and a cooling pipe 3 is installed in the center of the cable through a spacer 4. ing. That is, the cables 21, 22, 23 are
The spacers 4 are arranged to engage with recesses formed at the vertices of the spacer 4, which is equilaterally triangular in shape, and are located at approximately the same distance from the cooling pipes 3. This installation structure consists of cable 2
1.22.23 and the cooling pipe 3 have the above-mentioned position N relationship and are compactly arranged, so the trough 1 can be made smaller and the sheath eddy current can be reduced compared to, for example, the conventional method shown in FIG. Loss can be reduced, and induction of adjacent control lines is also relatively small. Also, cables 21.22. .. 23 and the cooling pipes 3; furthermore, by changing the shape of the spacer 4, the cables 21, 22
23 can also be arranged at arbitrary intervals. 1st above
The laying structure shown in Figure (A) is provided at regular intervals in the longitudinal direction of the cable laying line.
次に、第1図(ロ)は2本の冷却管を増設した部分の布
設構造で、布設線路中に第1図(イ)のt5設構造と組
合せて適用されるものである。この布設構造は、図示の
通り正三角形の各頂点に配置したケーブル21.22.
23の中心に、スペーサー4′によって支持された1条
の冷却管31を有する。又、頂部のケーブル21と他の
2条のケーブル22.23との間には中断支え5が設け
られていて、この上面に頂部のケーブル21と2条の冷
却管32.33とが載置される配置になっている。この
布設構造は、線路長手方向に一定間隔で設けられている
上記第1図(イ)の布設構造の中間部分における垂れ下
がりの歪を支えることを目的の一つとする。尚、シース
渦電流損失、制御線への誘導も小さい。第1図(ロ)の
布設構造を配置する別の目的は、後述のように、トラフ
を大型化することなく冷IA管を増設して冷却効果を高
めることができる点にある。即ち、例えば275KV、
lX2000mm2のOFケーブルでは、スネークピッ
チを9m、スネーク幅を1.5D(D−ケーブル外径)
とするのが適切である。又、ケーブル21或いはケーブ
ル23とトラフ1の内側壁との間隔は少なくとも0.7
50を必要とするがこの場合には、ケーブル21とトラ
フ1の内側壁との間隔は1.75Dとなり、ケーブル2
1のスネーク分0.75Dとの差1D分の間隙が残る。Next, FIG. 1(b) shows the installation structure of a portion in which two cooling pipes are added, and is applied in combination with the t5 installation structure of FIG. 1(a) in the laying line. As shown in the figure, this installation structure consists of cables 21, 22, .
At the center of 23, there is a single cooling pipe 31 supported by a spacer 4'. Furthermore, an interrupted support 5 is provided between the top cable 21 and the other two cables 22, 23, and the top cable 21 and two cooling pipes 32, 33 are placed on the upper surface of this suspension support 5. It is arranged to be One of the purposes of this laying structure is to support the sagging distortion in the intermediate portion of the laying structure shown in FIG. 1(a), which is provided at regular intervals in the longitudinal direction of the line. Additionally, sheath eddy current loss and induction into the control line are also small. Another purpose of arranging the installation structure shown in FIG. 1(b) is that, as will be described later, cold IA pipes can be added to increase the cooling effect without increasing the size of the trough. That is, for example, 275KV,
For a lX2000mm2 OF cable, the snake pitch is 9m and the snake width is 1.5D (D-cable outer diameter).
It is appropriate to Further, the distance between the cable 21 or the cable 23 and the inner wall of the trough 1 is at least 0.7
In this case, the distance between the cable 21 and the inner wall of the trough 1 is 1.75D, and the cable 2
A gap of 1D from the snake of 0.75D remains.
従って、第1図(イ)に示す布設構造と第1図(ロ)に
示す布設構造との組み合せによってトラフ1の大ぎさを
変えることなく冷却効果を高めることができる。Therefore, by combining the laying structure shown in FIG. 1(A) and the laying structure shown in FIG. 1(B), the cooling effect can be enhanced without changing the size of the trough 1.
以上説明したように、本発明のケーブルの布設方式によ
れば、ケーブル及びその冷却管を小形なトラフ内に収納
布設することができ、しかも、シース渦電流損失、並び
に制御線への誘導を共に小さくできるという実用的効果
を奏することができる。As explained above, according to the cable installation method of the present invention, the cable and its cooling pipe can be housed and installed in a small trough, and moreover, sheath eddy current loss and guidance to the control line can be reduced. It can have the practical effect of being made smaller.
第1図(イ)は本発明の実施例のケーブル3条に冷19
管1条が添設される布設構造部分の概略横断図面、同図
(ロ)は同じくケーブル3条に冷却管3本が添設される
布設構造部分の概略横断図面、第2図、第3図は従来の
ケーブル布設方式におけるケーブル布設構造の概略横断
図面である。
1ニド ラ フ、
2.21.22,23:ケーブル、
3.31.32.33 :冷 却 管、4.4’ニスペ
ーサ、
5:中段支え。Figure 1 (A) shows a cold 19 cable in three cables according to an embodiment of the present invention.
A schematic cross-sectional view of the installation structure part to which one pipe is attached, Figure (B) is a schematic cross-sectional view of the installation structure part to which three cables and three cooling pipes are attached, Figures 2 and 3. The figure is a schematic cross-sectional view of a cable laying structure in a conventional cable laying method. 1 Nidraft, 2.21.22, 23: Cable, 3.31.32.33: Cooling pipe, 4.4' varnish spacer, 5: Middle support.
Claims (1)
内に設けるケーブルの布設方式において、布設線路長手
方向の所定間隔毎に、3条のケーブル21、22、23
を正三角形の各頂点に配置してその中心にスペーサー4
を介して1条の冷却管3を添設する布設構造を設け、更
にその中間の所要箇所に、3条のケーブル21、22、
23を正三角形の各頂点に配置してその中心にスペーサ
ー4′により支持される1条の冷却管31を添設すると
ともに、頂部のケーブル21の両側に該頂部のケーブル
21と他の2条のケーブル22、 23との間に設けた中段支え5によって支持される2条
の冷却管32、33を添設する布設構造を設けることを
特徴とするケーブルの布設方式。[Claims] In a cable laying method in which cables for three phases of one line and their cooling pipes are provided in one trough, three cables 21, 22, 23 are arranged at predetermined intervals in the longitudinal direction of the laying line.
are placed at each vertex of an equilateral triangle, and a spacer 4 is placed in the center.
An installation structure is provided in which one cooling pipe 3 is attached through the cable, and three cables 21, 22,
23 are placed at each vertex of an equilateral triangle, and one cooling pipe 31 supported by a spacer 4' is attached to the center thereof, and the top cable 21 and two other cooling pipes are attached on both sides of the top cable 21. A cable laying method characterized by providing a laying structure in which two cooling pipes 32, 33 are attached, supported by a middle support 5 provided between the cables 22, 23.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63110755A JPS63314114A (en) | 1988-05-07 | 1988-05-07 | Laying system for cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63110755A JPS63314114A (en) | 1988-05-07 | 1988-05-07 | Laying system for cable |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3844081A Division JPS57153508A (en) | 1981-03-17 | 1981-03-17 | Cable laying system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63314114A true JPS63314114A (en) | 1988-12-22 |
JPH0147081B2 JPH0147081B2 (en) | 1989-10-12 |
Family
ID=14543742
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63110755A Granted JPS63314114A (en) | 1988-05-07 | 1988-05-07 | Laying system for cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63314114A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012157081A (en) * | 2011-01-21 | 2012-08-16 | Hitachi Cable Ltd | Conducting path |
US8800940B2 (en) | 2010-11-04 | 2014-08-12 | Hitachi Metals, Ltd. | Cable clamp |
-
1988
- 1988-05-07 JP JP63110755A patent/JPS63314114A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8800940B2 (en) | 2010-11-04 | 2014-08-12 | Hitachi Metals, Ltd. | Cable clamp |
JP2012157081A (en) * | 2011-01-21 | 2012-08-16 | Hitachi Cable Ltd | Conducting path |
US8853532B2 (en) | 2011-01-21 | 2014-10-07 | Hitachi Metals, Ltd. | Conducting path |
Also Published As
Publication number | Publication date |
---|---|
JPH0147081B2 (en) | 1989-10-12 |
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