JPH04199103A - Optical fiber cable laying method to existing power cable conduit - Google Patents
Optical fiber cable laying method to existing power cable conduitInfo
- Publication number
- JPH04199103A JPH04199103A JP2333689A JP33368990A JPH04199103A JP H04199103 A JPH04199103 A JP H04199103A JP 2333689 A JP2333689 A JP 2333689A JP 33368990 A JP33368990 A JP 33368990A JP H04199103 A JPH04199103 A JP H04199103A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- conduit
- cable
- plastic pipe
- power cable
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims description 12
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 229920003023 plastic Polymers 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 abstract description 2
- 241000270295 Serpentes Species 0.000 abstract description 2
- -1 polyethylene Polymers 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract description 2
- 229920002554 vinyl polymer Polymers 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、光ファイバーケーブルを既設の電力ケーブ
ル管路へ布設する方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of installing optical fiber cables into an existing power cable conduit.
［従来の技術］
電力ケーブルが既に布設してある管路に光ファイバーケ
ーブルを引込む場合、従来の技術として、まず管路内に
カーボンロッドなどを押し込んで竹通しを行ない、その
後ワイヤを通線し、ワイヤでテンションメンバ付光ファ
イバーケーブル管路に引込む手段が知られている。[Conventional technology] When an optical fiber cable is drawn into a conduit where a power cable has already been laid, the conventional technique is to first push a carbon rod or the like into the conduit and thread it through the bamboo, then thread the wire through the conduit. A method is known in which a wire is drawn into an optical fiber cable conduit with a tension member.
［発明が解決しようとする課題〕
ところで、カーボンロッドなどで竹通しを行なう際に、
カーボンロッドの先端か管路内に布設してある電力ケー
ブルの下に潜り込み、カーボンロッドの押し込みに大き
な力を必要とした。また、そのために、カーボンロッド
の先端で電力ケーブルを傷つける危険性があった。[Problem to be solved by the invention] By the way, when threading bamboo with a carbon rod, etc.
The tip of the carbon rod got under the power cable installed in the conduit, and a large amount of force was required to push the carbon rod. Additionally, there was a risk of damaging the power cable at the tip of the carbon rod.
また、ワイヤで光ファイバーケーブルを管路に引き入れ
る際に、ワイヤが電力ケーブルの下に入り込み、電力ケ
ーブルと管路内面の間に挟まれると、ワイヤが動かなく
なる欠点があった。Furthermore, when an optical fiber cable is drawn into a conduit using a wire, if the wire gets under the power cable and gets caught between the power cable and the inner surface of the conduit, the wire cannot move.
さらに、管路内に電力ケーブルがあるために、光ファイ
バーケーブル引き入れの際の摩擦抵抗が大きく、光ファ
イバーケーブルに過大な張力が加わり、光ファイバーケ
ーブルを損傷する可能性があった。Furthermore, since the power cable is located within the conduit, there is a large frictional resistance when the optical fiber cable is drawn in, and excessive tension is applied to the optical fiber cable, which may cause damage to the optical fiber cable.
この発明の目的は、前記した従来技術の欠点を解消し、
電力ケーブルを既に布設してある管路に光ファイバーケ
ーブルを容易に布設することができる布設方法を提供す
ることにある。The purpose of this invention is to eliminate the drawbacks of the prior art described above,
It is an object of the present invention to provide a method for easily laying an optical fiber cable in a conduit in which a power cable has already been laid.
［課題を達成するための手段〕
この発明の既設量カケープル管路への光ファイバーケー
ブル布設方法は、内側プラスチックパイプと外側プラス
チックパイプとの間に光ファイバを配設してなる光ファ
イバ複合バイブを、管路内に押し込んで布設することを
特徴とする管路内への光ファイバーケーブル布設方法で
ある。[Means for Achieving the Object] The method of laying an optical fiber cable in an existing capacitor conduit according to the present invention includes an optical fiber composite vibe formed by disposing an optical fiber between an inner plastic pipe and an outer plastic pipe. This is a method of installing an optical fiber cable into a conduit, which is characterized by the method of installing an optical fiber cable by pushing it into the conduit.
［作 用］
この発明の既設量カケープル管路への光ファイバーケー
ブル布設方法に使用する光ファイバー複合バイブは、中
空で軽いため管路内に既に布設してある電力ケーブルの
下に潜り込むことがなく、従って、この方法によれば従
来のように電力ケーブルと光ファイバーケーブルが干渉
し合うことが極めて少ないので、容易に光ファイバー複
合ケーブルを管路内に押し込むことができる。[Function] The optical fiber composite vibrator used in the method of laying an optical fiber cable in an existing capacitor conduit according to the present invention is hollow and light, so it does not sneak under the power cable already installed in the conduit. According to this method, there is very little interference between the power cable and the optical fiber cable as in the conventional method, so the optical fiber composite cable can be easily pushed into the conduit.
また、押し込んで布設するための光ファイバー複合バイ
ブに張力がかかることもなく、安全である。In addition, there is no tension applied to the optical fiber composite vibrator that is pushed in and installed, making it safe.
［実 施 例］
この発明の実施例を第１図および第２図によって説明す
る。第１図はこの発明に用いられる光フアイバ複合バイ
ブ４の断面図をである。同図において、１は内側プラス
チックパイプであり、３は外側プラスチックパイプであ
って、これらの両バイブ１，３の間に光ファイバーケー
ブル２が適宜本数だけ配設されている。両バイブ１，３
の材質は軽くて剛性の強いポリエチレン、ビニル、ナイ
ロン、テフロン等が挙げられる。また、光ファイバーケ
ーブル２は、両バイブ１，３を曲げた際に折れないよう
にラセン状あるいはスネーク状に余長をもたせて配設す
る。[Example] An example of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a sectional view of an optical fiber composite vibrator 4 used in the present invention. In the figure, 1 is an inner plastic pipe, 3 is an outer plastic pipe, and an appropriate number of optical fiber cables 2 are disposed between these two vibes 1 and 3. Both vibes 1 and 3
Examples of materials include light and rigid polyethylene, vinyl, nylon, and Teflon. Further, the optical fiber cable 2 is arranged in a spiral or snake shape with an extra length so as not to break when both the vibrators 1 and 3 are bent.
次に、第２図に基づいて、光フアイバ複合バイブ４を既
設の電力ケーブル管路に布設する工法について説明する
。６は管路であり、その内部に既設の電力ケーブル５が
収容されている。光フアイバ複合バイブ４は、公知のホ
ーリングマシン７を使用して管路６の開口６′から管路
６の隙間に押し込まれる。Next, a construction method for installing the optical fiber composite vibrator 4 in an existing power cable conduit will be explained based on FIG. 2. Reference numeral 6 denotes a conduit, and an existing power cable 5 is housed inside the conduit. The optical fiber composite vibrator 4 is pushed into the gap in the conduit 6 through the opening 6' of the conduit 6 using a well-known hole machine 7.
なお、光ファイバー複合バイブ４の外径は、管路６の内
径と電力ケーブル５の外径とを考慮して、それらの間に
挟まれないように上限を設定する。また、光ファイバー
複合バイブ４を長い距離に押し込むためには、光ファイ
バー複合バイブ４の曲げ剛性が大きく、かつ同バイブ４
が軽いことがポイントとなる。曲げ剛性を大きくするた
めには光ファイバー複合バイブ４の外径が大きい程よく
、光ファイバー複合バイブ４を軽（するためには、同バ
イブ４の肉厚を薄くするとよい。Note that the outer diameter of the optical fiber composite vibrator 4 is set at an upper limit in consideration of the inner diameter of the conduit 6 and the outer diameter of the power cable 5 so as not to be pinched between them. In addition, in order to push the optical fiber composite vibrator 4 over a long distance, it is necessary to have a large bending rigidity of the optical fiber composite vibrator 4 and
The key point is that it is light. In order to increase the bending rigidity, the larger the outer diameter of the optical fiber composite vibe 4 is, the better, and in order to make the optical fiber composite vibe 4 lighter, it is better to reduce the wall thickness of the optical fiber composite vibe 4.
［発明の効果］
以上説明したとおり、この発明によれば、光ファイバー
複合バイブを既設量カケープル管路に押し込んで布設す
るため、布設される光ファイバーが張力により損傷する
ことがなく、安全にしかも容易に布設することができる
。また、光ケーブルを電力ケーブルが既に布設してある
管路に布設できるので、光ファイバーケーブル用の管路
を新設する必要がなく、その経済的メリットが大きい。[Effects of the Invention] As explained above, according to the present invention, the optical fiber composite vibrator is laid by pushing it into the existing capacitor conduit, so that the optical fiber to be laid is not damaged by tension, and can be installed safely and easily. Can be installed. Furthermore, since the optical cable can be installed in a conduit where the power cable has already been installed, there is no need to newly install a conduit for the optical fiber cable, which has a great economical advantage.
第１図は、この発明の一実施例に用いられる光ファイバ
ー複合バイブの断面図、
第２図は、この発明の光ファイバー複合バイブの管路押
し込み方法の一実施例の概略を示す斜視図である。
１・・・内側プラスチックパイプ
２・・・光ファイバー
３・・・外側プラスチックパイプ
４・・・光ファイバー複合バイブ
５・・・電力ケーブル
６・・・管路
６′・・・開口
ア・・・ホーリングマシンFIG. 1 is a sectional view of an optical fiber composite vibrator used in an embodiment of the present invention, and FIG. 2 is a perspective view schematically showing an embodiment of the method for pushing the optical fiber composite vibe into a conduit according to the present invention. 1... Inner plastic pipe 2... Optical fiber 3... Outer plastic pipe 4... Optical fiber composite vibe 5... Power cable 6... Conduit 6'... Opening a... Holing machine
Claims (1)
ーブルを後から布設する方法において、内側プラスチッ
クパイプと、それを覆う外側プラスチックパイプと、そ
れらの間に設けられた光ファイバーケーブルからなる光
ファイバー複合パイプを前記管路内に押し込んで布設す
ることを特徴とする光ファイバーケーブル布設方法。In a method for later laying an optical fiber cable in a conduit in which a power cable has already been laid, an optical fiber composite pipe consisting of an inner plastic pipe, an outer plastic pipe covering it, and an optical fiber cable provided between them is used. An optical fiber cable installation method characterized by laying the optical fiber cable by pushing it into a conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333689A JPH04199103A (en) | 1990-11-29 | 1990-11-29 | Optical fiber cable laying method to existing power cable conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2333689A JPH04199103A (en) | 1990-11-29 | 1990-11-29 | Optical fiber cable laying method to existing power cable conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04199103A true JPH04199103A (en) | 1992-07-20 |
Family
ID=18268870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2333689A Pending JPH04199103A (en) | 1990-11-29 | 1990-11-29 | Optical fiber cable laying method to existing power cable conduit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04199103A (en) |
-
1990
- 1990-11-29 JP JP2333689A patent/JPH04199103A/en active Pending
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