JPH0158805B2 - - Google Patents
Info
- Publication number
- JPH0158805B2 JPH0158805B2 JP58118861A JP11886183A JPH0158805B2 JP H0158805 B2 JPH0158805 B2 JP H0158805B2 JP 58118861 A JP58118861 A JP 58118861A JP 11886183 A JP11886183 A JP 11886183A JP H0158805 B2 JPH0158805 B2 JP H0158805B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- oil
- twisted
- protective layer
- optical unit
- 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
- 230000003287 optical effect Effects 0.000 claims description 36
- 238000000576 coating method Methods 0.000 claims description 17
- 239000013307 optical fiber Substances 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 13
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 4
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000004809 Teflon Substances 0.000 description 7
- 229920006362 Teflon® Polymers 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 229920002050 silicone resin Polymers 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Communication Cables (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は電力線と光ユニツトを撚り合わせて成
る油入電力・光複合ケーブルの前記光ユニツトの
改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an improvement of the optical unit of an oil-filled power/optical composite cable formed by twisting a power line and an optical unit.
従来、電力線と光ユニツトを撚り合わせて成る
油入電力・光複合ケーブル（OFケーブルと光ケ
ーブルの複合ケーブル）の前記光ユニツトは、繊
維強化プラスチツク被覆（以下、FRP被覆とい
う。）を有する複数の光フアイバ心線と高張力線
との撚り合わせ体に紙を巻き、さらに鉛被覆した
ものや、シリコン樹脂等から成る応力緩衝層を有
する複数の光フアイバ心線と高張力線の撚り合わ
せ体にやはりシリコン樹脂等から成るゲル状充填
材を充填せしめ、全体を断面円形に成形した後、
FRP被覆を施し、これに紙を巻き、あるいは紙
巻きをせず直接鉛被覆したものが知られている。
Conventionally, the optical unit of an oil-filled power/optical composite cable (combined OF cable and optical cable) consisting of power lines and optical units twisted together has a fiber-reinforced plastic coating (hereinafter referred to as FRP coating). A twisted body of fiber core wires and high-tensile strength wires wrapped in paper and further coated with lead, or a twisted body of multiple optical fiber core wires and high-tensile strength wires with a stress buffer layer made of silicone resin, etc. After filling with gel-like filler made of silicone resin etc. and molding the whole into a circular cross section,
It is known to have an FRP coating and wrap it with paper, or directly coat it with lead without wrapping it with paper.
ところが鉛被覆を施した光ユニツトを電力線と
撚り合わせると以下のような問題がある。 However, when an optical unit coated with lead is twisted together with a power line, the following problems arise.
鉛被覆は外圧に非常に弱く、それ故電力線と撚
り合わせる際簡単につぶれたり、最悪の場合は破
れたりして内部の光フアイバ心線に悪影響を与え
る。そこでつぶれぬようにするには鉛被覆と、内
部の複数の光フアイバ心線と高張力線等から成る
撚り合わせ体との間の隙間を無くするか、あるい
はまた、この隙間に紙等の介在を充分に詰め込む
しかない。ところがこのように隙間を無くすると
電力線との撚り合わせ時、外圧が内部の撚り合わ
せ体に直接負荷するだけでなく、内部の撚り合わ
せ体が局部的にも動けなくなるため、前記電力線
との撚り合わせ時、あるいはこの光ユニツトを用
いた油入電力・光複合ケーブルの布設時の張力、
側圧、曲げ等に対しなんらの応力緩和をも成し得
ず、その結果光フアイバ心線の特性劣化を防止し
得ない。また油入電力・光複合ケーブルにおいて
は、電力線と光ユニツト及び油供給管等を撚り合
わせた後、紙乾燥のため高温長時間乾燥を行なう
が、百数十度数十時間放置の条件下では鉛被覆は
熱劣化をおこし、機械的強度が著しく低下する。
この機械的強度の低下により、あるいはまた前述
のつぶれ等により鉛被覆が破れると内部に油が浸
入する。内部の光フアイバ心線はFRP被覆層を
有しているとはいえ、長期間油に浸つている場合
は信頼性の保証はない。 The lead coating is very sensitive to external pressure, and therefore, when twisted with power lines, it can easily be crushed or, in the worst case, be torn, adversely affecting the internal optical fiber core. In order to prevent this from collapsing, it is necessary to eliminate the gap between the lead coating and the stranded body consisting of multiple cored optical fibers and high-tensile wires, etc., or to insert paper or other material into this gap. There is no choice but to pack enough. However, if this gap is eliminated, not only will the external pressure be applied directly to the internal twisted body when twisting with the power line, but also the internal twisted body will not be able to move locally. time, or the tension when installing an oil-filled power/optical composite cable using this optical unit.
It is not possible to provide any stress relief against lateral pressure, bending, etc., and as a result, it is not possible to prevent characteristic deterioration of the optical fiber core wire. In addition, for oil-filled power/optical composite cables, after the power lines, optical units, oil supply pipes, etc. are twisted together, they are dried at high temperatures for a long time to dry the paper. Lead coatings undergo thermal deterioration, resulting in a significant decrease in mechanical strength.
If the lead coating is torn due to this decrease in mechanical strength or due to the above-mentioned crushing, oil will infiltrate inside. Although the internal optical fiber core has an FRP coating layer, there is no guarantee of reliability if it is immersed in oil for a long period of time.
さらに鉛工作業に伴なう熱負荷も加わり、耐熱
性のFRP被覆に保護されているとはいつても光
フアイバ心線の長期信頼性を低下させる要因とな
つている。 In addition, the heat load associated with lead work is a factor that reduces the long-term reliability of optical fiber cores, even though they are protected by heat-resistant FRP coatings.
前記問題点に鑑み、本発明の目的は気密性、耐
油性、耐熱性を有し、かつ機械的強度及び応力緩
和効果をも有する光ユニツトを用いた信頼性の高
い油入電力・光複合ケーブルを提供することにあ
る。
In view of the above problems, the object of the present invention is to provide a highly reliable oil-filled power/optical composite cable using an optical unit that is airtight, oil resistant, heat resistant, and also has mechanical strength and stress relaxation effects. Our goal is to provide the following.
前記目的を達成すべく本発明は、電力線と光ユ
ニツトを撚り合わせて成る油入電力・光複合ケー
ブルにおいて、前記光ユニツトは、高張力線と繊
維強化プラスチツク被覆を有する複数の光フアイ
バ心線とから成る撚り合わせ体と、該撚り合わせ
体の外周に被覆せしめた４−フツ化エチレン樹脂
から成る保護層と、該保護層との間に空隙を有し
て被覆せしめたアルミ管とから成るものである。
In order to achieve the above object, the present invention provides an oil-filled power/optical composite cable consisting of a power line and an optical unit twisted together, wherein the optical unit comprises a plurality of optical fiber core wires each having a high tensile strength wire and a fiber-reinforced plastic coating. A protective layer made of 4-fluoroethylene resin coated on the outer periphery of the twisted body, and an aluminum tube coated with a gap between the protective layer and the twisted body. It is.
本発明の実施例を図を参照して詳細に説明す
る。第１図、第２図は本発明に係る光ユニツトの
一実施例及び他の実施例の断面図である。また第
３図は前記光ユニツトを電力線等と撚り合わせそ
の周囲に油を含浸せしめた介在物を介在させた油
入電力・光複合ケーブルの断面図である。
Embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 are cross-sectional views of one embodiment and another embodiment of the optical unit according to the present invention. FIG. 3 is a sectional view of an oil-filled power/optical composite cable in which the optical unit is twisted with power lines, etc., and an oil-impregnated inclusion is interposed around the optical unit.
第１図に示す実施例では、鋼線、あるいは
FRPから成る高張力線１のまわりにFRP被覆を
有する複数の光フアイバ心線２を撚り合わせ、不
織布等の押えテープ３で押え巻きを施し、さらに
紙テープ４を巻いた後４−フツ化エチレン樹脂
（以下、テフロンという。）から成る保護層５を施
し、さらに金属化紙等の紙テープ６を巻き、該紙
テープ６層との間に0.5〜３mmの空隙を有してア
ルミ管７を被覆せしめたものである。なお、前記
押えテープ３、紙テープ４及び紙テープ６は省略
してもよい。また第２図が示す他の実施例では、
鋼線、あるいはFRPから成る高張力線１のまわ
りにFRP被覆を持たず、シリコン樹脂等からな
る被覆を有する複数の光フアイバ心線２を撚り合
わせた後、仕上がりがほぼ断面円形になるように
ゲル状のシリコン樹脂を充填し、充填層８を設
け、しかる後にFRP被覆層９を被覆し、紙テー
プ４を巻き、テフロンから成る保護層５を施こ
し、さらに金属化紙等の紙テープ６を巻いた後、
該紙テープ６層との間に0.5〜３mmの空隙を有し
てアルミ管７を被覆せしめたものである。本実施
例にあつても紙テープ４、紙テープ６は省略して
もよい。 In the embodiment shown in FIG.
A plurality of optical fiber core wires 2 having an FRP coating are twisted around a high tensile strength wire 1 made of FRP, and the fibers are wrapped with a pressing tape 3 made of nonwoven fabric, etc., and then a paper tape 4 is wrapped around the 4-fluorinated ethylene resin. A protective layer 5 consisting of Teflon (hereinafter referred to as Teflon) was applied, and a paper tape 6 such as metallized paper was further wrapped around the aluminum tube 7 with a gap of 0.5 to 3 mm between the 6 layers of paper tape. It is something. Note that the presser tape 3, paper tape 4, and paper tape 6 may be omitted. In another embodiment shown in FIG.
After twisting together a plurality of optical fiber core wires 2 that do not have an FRP coating around a high-tensile wire 1 made of steel wire or FRP but have a coating made of silicone resin or the like, the finished product has a nearly circular cross section. Filled with gel-like silicone resin, provided with a filling layer 8, then covered with an FRP coating layer 9, wrapped with paper tape 4, applied with a protective layer 5 made of Teflon, and further wrapped with paper tape 6 such as metallized paper. After
The aluminum tube 7 is coated with the six layers of paper tape with a gap of 0.5 to 3 mm between them. Even in this embodiment, the paper tape 4 and the paper tape 6 may be omitted.
第３図は前記の実施例あるいは他の実施例で示
した光ユニツト１０を複数の電力線１５、複数の
油供給管１６及び介在物１７と共に撚り、しかる
後アルミからなる保護層１８、ポリエチレンから
なる防食保護層１９を施こし、完成後前記油供給
管１６にて前記介在物１７に油を浸した本発明の
油入電力・光複合ケーブルを示している。 FIG. 3 shows the optical unit 10 shown in the above embodiment or other embodiments twisted together with a plurality of power lines 15, a plurality of oil supply pipes 16 and an inclusion 17, and then a protective layer 18 made of aluminum and a protective layer 18 made of polyethylene. The oil-filled power/optical composite cable of the present invention is shown in which an anti-corrosion protective layer 19 has been applied and the inclusion 17 is soaked in oil at the oil supply pipe 16 after completion.
前記本発明に係る光ユニツトは、耐熱、耐油性
のテフロンから成る保護層５を有し、かつ該保護
層５の外周に設けた紙テープ６層との間に充分な
空隙を有してアルミ管７を被覆してあるため、こ
の光ユニツトを第３図のように電力線１５等と撚
り合わせても従来の鉛被覆と異なりつぶれる恐れ
が少なく、それ故つぶれにより破損し気密性を失
う心配も少ない。さらに前記アルミ管７と紙テー
プ６層の間には充分な空隙があるため内部の光フ
アイバ心線２はアルミ管７の断面方向及び長手方
向に移動可能なため、前記電力線１５等との撚り
合わせ時に生ずる側圧や引張力、あるいは布設時
の引張力や曲げ等に対して応力を緩和することが
できる。 The optical unit according to the present invention has a protective layer 5 made of heat-resistant and oil-resistant Teflon, and has a sufficient gap between the protective layer 5 and six layers of paper tape provided on the outer periphery of the aluminum tube. 7, there is less risk of crushing even if this optical unit is twisted with power lines 15, etc. as shown in Figure 3, unlike conventional lead coatings, and therefore there is less risk of damage due to crushing and loss of airtightness. . Furthermore, since there is a sufficient gap between the aluminum tube 7 and the six layers of paper tape, the internal optical fiber core wire 2 can be moved in the cross-sectional direction and longitudinal direction of the aluminum tube 7, so that it can be twisted with the power line 15, etc. It is possible to relieve stress against lateral pressure and tensile force that sometimes occur, or tensile force and bending during installation.
さらに、アルミ管７は従来の鉛被覆と異なり百
数十度数十時間という乾燥工程でなんら熱劣化す
ることもないし、また内部の光フアイバ心線２も
耐熱性のFRP被覆を有しているのみならず、耐
熱性に富むテフロンの保護層５に保護されている
ため熱劣化することもない。加えて万が一、アル
ミ管７が破れて介在物１７から油が入つてきて
も、前記テフロンの保護層５が耐油性にも富んで
いるため内部の光フアイバ心線２は油からも保護
される。 Furthermore, unlike conventional lead coatings, the aluminum tube 7 does not undergo any thermal deterioration during the drying process of 100-odd degrees Celsius for several tens of hours, and the optical fiber core 2 inside also has a heat-resistant FRP coating. Moreover, since it is protected by the protective layer 5 made of Teflon, which has high heat resistance, it will not deteriorate due to heat. In addition, even if the aluminum tube 7 breaks and oil enters from the inclusion 17, the internal optical fiber core 2 will be protected from the oil because the Teflon protective layer 5 is highly oil resistant. Ru.
尚、前記アルミ管７の内部に絶縁性の高いSF6
等のガスを介在物１７側の油圧と同じ内圧で封入
しておくと、前記アルミ管７がへこみにくく、か
つアルミ管７に損傷があつても絶縁性を維持出来
るという効果がある。 In addition, SF 6 with high insulation is inside the aluminum tube 7.
If a gas such as the like is sealed at the same internal pressure as the oil pressure on the side of the inclusion 17, the aluminum tube 7 is less likely to be dented, and even if the aluminum tube 7 is damaged, the insulation properties can be maintained.
前記の如く本発明の油入電力・光複合ケーブル
によれば、気密性、耐油性、耐熱性、機械的強度
に優れ、かつ応力緩和効果をも合わせ持つ光ユニ
ツトを使用しているため、信頼性が著しく向上す
る。
As described above, the oil-filled power/optical composite cable of the present invention uses an optical unit that has excellent airtightness, oil resistance, heat resistance, and mechanical strength, and also has a stress relaxation effect, so it is reliable. performance is significantly improved.
第１図及び第２図は本発明に係る光ユニツトの
一実施例及び他の実施例の断面図、第３図は本発
明の油入電力・光複合ケーブルの一実施例を示す
断面図である。
１……高張力線、２……光フアイバ心線、５…
…テフロン保護層、７……アルミ管、９……
FRP被覆、１０……光ユニツト、１５……電力
線、１６……油供給管、１７……介在物。
1 and 2 are cross-sectional views of one embodiment and another embodiment of the optical unit according to the present invention, and FIG. 3 is a cross-sectional view showing an embodiment of the oil-filled power/optical composite cable of the present invention. be. 1... High tension wire, 2... Optical fiber core wire, 5...
...Teflon protective layer, 7... Aluminum tube, 9...
FRP coating, 10... Optical unit, 15... Power line, 16... Oil supply pipe, 17... Inclusion.
Claims (1)
電力・光複合ケーブルにおいて、前記光ユニツト
は、高張力線と繊維強化プラスチツク被覆を有す
る複数の光フアイバ心線とから成る撚り合わせ体
と、該撚り合わせ体の外周に被覆せしめた４−フ
ツ化エチレン樹脂から成る保護層と、該保護層と
の間に空隙を有して被覆せしめたアルミ管とから
成ることを特徴とする油入電力・光複合ケーブ
ル。 ２ 前記光ユニツトの撚り合わせ体は、複数の光
フアイバ心線と高張力線を撚り合わせたものにゲ
ル状充填材を充填せしめ、全体をほぼ断面円形に
した後繊維強化プラスチツク被覆を施したもので
あることを特徴とする特許請求の範囲第１項記載
の油入電力・光複合ケーブル。[Scope of Claims] 1. An oil-filled power/optical composite cable consisting of a twisted power line and an optical unit, wherein the optical unit is a twisted cable consisting of a high tensile strength wire and a plurality of optical fiber core wires each having a fiber-reinforced plastic coating. It is characterized by consisting of a combined body, a protective layer made of 4-fluoroethylene resin coated on the outer periphery of the twisted body, and an aluminum tube coated with a gap between the protective layer and the protective layer. Oil-filled power/optical composite cable. 2. The stranded body of the optical unit is made by stranding a plurality of optical fiber core wires and high-tensile strength wires, filling them with a gel-like filler, making the entire body approximately circular in cross section, and then covering it with fiber-reinforced plastic. An oil-filled power/optical composite cable according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58118861A JPS6010507A (en) | 1983-06-30 | 1983-06-30 | Oil-filled power and optical composite cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58118861A JPS6010507A (en) | 1983-06-30 | 1983-06-30 | Oil-filled power and optical composite cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6010507A JPS6010507A (en) | 1985-01-19 |
| JPH0158805B2 true JPH0158805B2 (en) | 1989-12-13 |
Family
ID=14746946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58118861A Granted JPS6010507A (en) | 1983-06-30 | 1983-06-30 | Oil-filled power and optical composite cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6010507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227005U (en) * | 1988-08-10 | 1990-02-22 | ||
| JPH0434204A (en) * | 1990-05-31 | 1992-02-05 | T V Valve Kk | Piston type oscillatory actuator |
| JPH0434203A (en) * | 1990-05-31 | 1992-02-05 | T V Valve Kk | Piston type oscillatory actuator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2557832Y2 (en) * | 1990-02-19 | 1997-12-17 | 鹿島建設株式会社 | Optical fiber composite cable |
-
1983
- 1983-06-30 JP JP58118861A patent/JPS6010507A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227005U (en) * | 1988-08-10 | 1990-02-22 | ||
| JPH0434204A (en) * | 1990-05-31 | 1992-02-05 | T V Valve Kk | Piston type oscillatory actuator |
| JPH0434203A (en) * | 1990-05-31 | 1992-02-05 | T V Valve Kk | Piston type oscillatory actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6010507A (en) | 1985-01-19 |
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