JPH04326Y2 - - Google Patents
Info
- Publication number
- JPH04326Y2 JPH04326Y2 JP1984095191U JP9519184U JPH04326Y2 JP H04326 Y2 JPH04326 Y2 JP H04326Y2 JP 1984095191 U JP1984095191 U JP 1984095191U JP 9519184 U JP9519184 U JP 9519184U JP H04326 Y2 JPH04326 Y2 JP H04326Y2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- cable
- coating layer
- fiber cable
- heat
- 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
- 239000013307 optical fiber Substances 0.000 claims description 25
- 239000011247 coating layer Substances 0.000 claims description 9
- 239000004642 Polyimide Substances 0.000 claims description 8
- 229920001721 polyimide Polymers 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 229920003235 aromatic polyamide Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 description 8
- 239000004760 aramid Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 229920002379 silicone rubber Polymers 0.000 description 5
- 239000004945 silicone rubber Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Communication Cables (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は架空地線に組込んで使用される光フ
アイバケーブルの構造に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to the structure of an optical fiber cable that is used by being incorporated into an overhead ground wire.
光フアイバケーブルは大量の情報を伝送するこ
とができ、しかも低損失で無誘導、絶縁物である
といつた特長から架空地線の中に組込み変電所と
変電所との間の情報の伝達、送電線路の情報の伝
送、テレビ障害対策等の目的に使用することが考
えられ、実用の段階に入つてきている。 Optical fiber cables can transmit large amounts of information, and because they are low-loss, non-inductive, and insulating, they can be incorporated into overhead ground wires to transmit information between substations. It is considered to be used for purposes such as transmitting information on power transmission lines and countermeasures against TV interference, and is now entering the stage of practical use.
（従来の技術）（解決しようとする問題点）
このような光フアイバ複合架空地線の代表的な
構造は、第３図に示すように光フアイバケーブル
１を薄いアルミ管２の中に内蔵させたものを、ア
ルミニウムより線３の中に設けるようにしたもの
で、図示してないが鋼線を併用したり、アルミニ
ウム線の形状をセグメント導体にする等各種の変
形はあるが基本的には第３図を基準として考え得
るものである。(Prior art) (Problem to be solved) A typical structure of such an optical fiber composite overhead ground wire is that an optical fiber cable 1 is built into a thin aluminum tube 2 as shown in FIG. This is a type of wire that is installed inside the aluminum stranded wire 3. Although not shown in the figure, there are various modifications such as using steel wire together or changing the shape of the aluminum wire to a segment conductor, but basically the This can be considered based on Figure 3.
このような場合に用いられる光フアイバケーブ
ルは必要に応じて引き換え可能なケーブル構造で
あることが要請されるが、光フアイバ自身の構造
は例えば第４図に示すように、光通信用ガラスフ
アイバ４の外周に、変成シリコンゴム５、シリコ
ンゴムクツシヨン層６、ナイロン被覆層７を順次
被覆して光フアイバ心線８を構成しており、これ
を例えば第５図に示すように高抗張力線９を中心
として、その周囲に前記光フアイバ心線８の複数
条を配列してその上に押え巻を施してケーブルコ
アを構成し、さらにその上にシース１０を施した
ものが、或は第６図に示すように高抗張力線９を
中心としてその周囲に光フアイバ心線８と高抗張
力線９とを交互に配列し撚合わせてその上に押え
巻を施してケーブルコアを構成し、さらにその上
に耐熱性プラスチツクの押出被覆層１０を施した
ものが考えられ、高抗張力線を利用して光フアイ
バケーブルの引入れ交換をしていた。ところが、
このようなケーブルでは端面がアルミ管と接触変
形し光フアイバ素線への圧縮力の不均等に働くこ
とから改良が望まれ現在の代表的構造は第７図イ
に示すように、例えば第６図に示すケーブル上に
第７図ロに示したようなアラミツド繊維の編組層
１１を設け、この編組層１１をけん引することに
より、光フアイバケーブルの引き入れ、交換を行
なうことが試行されている。しかし、この方法は
アラミツド繊維の編組層１１の端部を引張るため
に、この編組層がケーブルを強く締めつけること
になり特にアラミツド繊維の膨張係数が負の値な
ので、高温時に光フアイバ自体に圧縮力（側圧）
を及ぼす結果となり伝送損失を増大し、又、一た
ん強く締めつけられた編組はもとの状態に復元し
にくいので引抜き後の再使用が不可能である。 The optical fiber cable used in such cases is required to have a cable structure that can be replaced as needed, but the structure of the optical fiber itself is, for example, as shown in FIG. A modified silicone rubber 5, a silicone rubber cushion layer 6, and a nylon coating layer 7 are sequentially coated on the outer periphery of the optical fiber core 8, and as shown in FIG. 5, for example, a high tensile strength wire 9 A cable core is constructed by arranging a plurality of the optical fiber cores 8 around the core, and applying pressure winding thereon, and further applying a sheath 10 thereon. As shown in the figure, optical fiber core wires 8 and high tensile strength wires 9 are alternately arranged around a high tensile strength wire 9, twisted together, and then wrapped with pressure to form a cable core. An extruded coating layer 10 of heat-resistant plastic was applied thereon, and a high tensile strength wire was used to insert and replace optical fiber cables. However,
In such a cable, the end face is deformed when it comes into contact with the aluminum tube, and compressive force is applied unevenly to the optical fiber wire. Therefore, improvements are desired, and the current typical structure is, for example, the An attempt has been made to provide a braided layer 11 of aramid fibers as shown in FIG. 7B on the cable shown in the figure, and to pull the braided layer 11 to pull in and replace the optical fiber cable. However, in this method, since the ends of the braided layer 11 of aramid fibers are pulled, this braided layer strongly tightens the cable.In particular, since the expansion coefficient of aramid fibers is a negative value, compressive force is applied to the optical fiber itself at high temperatures. (lateral pressure)
This results in an increase in transmission loss, and once the braid is tightly tightened, it is difficult to restore it to its original state, making it impossible to reuse it after being pulled out.
（解決するための手段）
本考案は上記のような実情に鑑みてなされたも
ので、光フアイバケーブルの耐熱性プラスチツク
の押出被覆層の外側にポリイミドテープ巻１２を
設け、その表面に接着剤を塗布しその上にアラミ
ツド繊維をほゞケーブルの長手方向に配列接着し
た光フアイバケーブルである。(Means for Solving the Problem) The present invention was developed in view of the above-mentioned circumstances, and consists of providing a polyimide tape wrap 12 on the outside of the heat-resistant plastic extruded coating layer of the optical fiber cable, and applying an adhesive to the surface of the polyimide tape wrap 12. This is an optical fiber cable on which aramid fibers are adhered and arranged in the longitudinal direction of the cable.
（実施例）
以下本考案を第１図を参照しつゝ説明すれば次
のとおりである。(Example) The present invention will be described below with reference to FIG. 1.
ケーブルシースまでの構成は第６図の編組を除
いて同様であり同一部分には同一符合を付してあ
る。 The structure up to the cable sheath is the same as shown in FIG. 6 except for the braid, and the same parts are given the same reference numerals.
第１図イは本考案の光フアイバケーブルの一例
を示し、シリコンゴムシースの如き耐熱性の押出
被覆層１０の外側にポリイミドテープ巻１２を施
し、その表面に接着剤を塗布してある。又、アラ
ミツド繊維１３を縦添えしてありその表面構造は
第１図ロに示すとおりである。 FIG. 1A shows an example of the optical fiber cable of the present invention, in which a polyimide tape wrap 12 is applied to the outside of a heat-resistant extruded coating layer 10 such as a silicone rubber sheath, and an adhesive is applied to the surface thereof. Further, aramid fibers 13 are attached vertically, and the surface structure thereof is as shown in FIG. 1B.
又、第２図イは本考案の光フアイバケーブルの
他の一例を示し、シリコンゴムシースの如き耐熱
性の押出被覆層１０の外側にポリイミドテープ巻
１２を施しその表面に接着剤を塗布し、更にその
上にポリアラミツド繊維１３を交互巻してある。
その表面構造は第１図のロに示すとおりであつて
そのピツチは2m以上であつて温度上昇にともな
う収縮によつてもケーブル側圧がかからない程度
とされている。 FIG. 2A shows another example of the optical fiber cable of the present invention, in which a polyimide tape wrap 12 is applied to the outside of a heat-resistant extruded coating layer 10 such as a silicone rubber sheath, and an adhesive is applied to the surface. Furthermore, polyaramid fibers 13 are alternately wound thereon.
Its surface structure is as shown in FIG.
（考案の効果）
本考案はこれら実施例に示すように最外層を構
成するアラミツド繊維は縦添えもしくは交互巻き
等、ほゞケーブルの長手方向に配列されているも
のであるからこれをけん引しても光フアイバに側
圧がかゝるおそれはないので同ケーブルの損失を
生ぜず、又、アラミツド繊維はその内側のポリイ
ミドテープ上に接着剤で接着されているので、再
使用が可能であり、かつ摩擦係数の大きいシリコ
ンゴムの如き耐熱性ゴムの押出被覆層の表面を摩
擦係数の小さいアラミツド繊維でおおつているの
で引換えが容易である。(Effects of the invention) As shown in these examples, the aramid fibers constituting the outermost layer are arranged in the longitudinal direction of the cable, such as vertically laid or alternately wound. Since there is no risk of lateral pressure being applied to the optical fiber, there is no risk of cable loss, and since the aramid fiber is bonded with adhesive to the inner polyimide tape, it can be reused. Since the surface of the extruded coating layer of heat-resistant rubber such as silicone rubber with a high coefficient of friction is covered with aramid fibers with a low coefficient of friction, it is easy to replace.
第１図は本考案の光フアイバケーブルの一例で
イはその横断面図、ロはその部分表面図、第２図
は本考案の他の一例でイはその断面図、ロはその
部分表面図、第３図は光複合架空地線の一例を示
す横断面図、第４図は光フアイバ素線の一例を示
す横断面図、第５図、第６図はそれぞれ従来の架
空地線複合用光フアイバケーブルの横断面図、第
７図は従来の更に他の一例を示す光フアイバケー
ブルのイは横断面図、ロは一部切截の部分表面図
である。
８……光フアイバケーブル心線、９……高抗張
力線、１０……耐熱性の押出被覆層、１２……ポ
リイミドテープ巻、１３……ポリアラミツド繊
維。
Figure 1 is an example of the optical fiber cable of the present invention, A is its cross-sectional view, B is its partial surface view, and Figure 2 is another example of the present invention, A is its cross-sectional view, B is its partial surface view. , Fig. 3 is a cross-sectional view showing an example of an optical composite overhead ground wire, Fig. 4 is a cross-sectional view showing an example of an optical fiber bare wire, and Figs. 5 and 6 are respectively cross-sectional views of conventional combined overhead ground wires. FIG. 7 is a cross-sectional view of an optical fiber cable showing yet another example of the conventional optical fiber cable. 8... Optical fiber cable core, 9... High tensile strength wire, 10... Heat resistant extrusion coating layer, 12... Polyimide tape wrapping, 13... Polyaramid fiber.
Claims (1)
層の外部にポリイミドテープ巻が施され、その外
部にポリアラミツド繊維がほぼケーブルの長手方
向に接着剤を介して前記ポリイミドテープに固着
されて配列されていることを特徴とする架空地線
複合用光フアイバケーブル。 A polyimide tape wrap is applied to the outside of the heat-resistant coating layer that covers the optical fiber cable core, and polyaramid fibers are arranged on the outside of the heat-resistant coating layer, fixed to the polyimide tape via an adhesive, approximately in the longitudinal direction of the cable. An optical fiber cable for composite overhead ground wires featuring the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519184U JPS6111114U (en) | 1984-06-27 | 1984-06-27 | Overhead ground wire composite optical fiber cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9519184U JPS6111114U (en) | 1984-06-27 | 1984-06-27 | Overhead ground wire composite optical fiber cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6111114U JPS6111114U (en) | 1986-01-23 |
| JPH04326Y2 true JPH04326Y2 (en) | 1992-01-08 |
Family
ID=30654192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9519184U Granted JPS6111114U (en) | 1984-06-27 | 1984-06-27 | Overhead ground wire composite optical fiber cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6111114U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4818060A (en) * | 1987-03-31 | 1989-04-04 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical fiber building cables |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50131537A (en) * | 1974-04-04 | 1975-10-17 | ||
| JPS5632106A (en) * | 1979-08-24 | 1981-04-01 | Kokusai Denshin Denwa Co Ltd <Kdd> | Fiber unit for optical marine cable |
| JPS5862602A (en) * | 1981-10-09 | 1983-04-14 | Kansai Electric Power Co Inc:The | Optical cable of light composite overhead ground wire |
| JPS5925107A (en) * | 1982-07-19 | 1984-02-09 | ビ−アイシ−シ−・パブリツク・リミテツド・コンパニ− | Flexible longitudinal unit |
-
1984
- 1984-06-27 JP JP9519184U patent/JPS6111114U/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50131537A (en) * | 1974-04-04 | 1975-10-17 | ||
| JPS5632106A (en) * | 1979-08-24 | 1981-04-01 | Kokusai Denshin Denwa Co Ltd <Kdd> | Fiber unit for optical marine cable |
| JPS5862602A (en) * | 1981-10-09 | 1983-04-14 | Kansai Electric Power Co Inc:The | Optical cable of light composite overhead ground wire |
| JPS5925107A (en) * | 1982-07-19 | 1984-02-09 | ビ−アイシ−シ−・パブリツク・リミテツド・コンパニ− | Flexible longitudinal unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6111114U (en) | 1986-01-23 |
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