JP2780310B2 - Fiber optic cable - Google Patents

Fiber optic cable

Info

Publication number
JP2780310B2
JP2780310B2 JP1055791A JP5579189A JP2780310B2 JP 2780310 B2 JP2780310 B2 JP 2780310B2 JP 1055791 A JP1055791 A JP 1055791A JP 5579189 A JP5579189 A JP 5579189A JP 2780310 B2 JP2780310 B2 JP 2780310B2
Authority
JP
Japan
Prior art keywords
optical fiber
unit
fiber unit
polymer pipe
core
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 - Lifetime
Application number
JP1055791A
Other languages
Japanese (ja)
Other versions
JPH0250111A (en
Inventor
徹治 青木
邦 林
良明 寺沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP1055791A priority Critical patent/JP2780310B2/en
Priority to US07/349,998 priority patent/US4952021A/en
Priority to AU34881/89A priority patent/AU617173C/en
Publication of JPH0250111A publication Critical patent/JPH0250111A/en
Application granted granted Critical
Publication of JP2780310B2 publication Critical patent/JP2780310B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • G02B6/46—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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M103/00—Lubricating compositions characterised by the base-material being an inorganic material
    • C10M103/02—Carbon; Graphite
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/22—Carboxylic acids or their salts
    • C10M105/24—Carboxylic acids or their salts having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
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    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32—Esters
    • C10M105/34—Esters of monocarboxylic acids
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    • 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
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/4438—Means specially adapted for strengthening or protecting the cables for facilitating insertion by fluid drag in ducts or capillaries
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
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    • C10M2201/04—Elements
    • C10M2201/041—Carbon; Graphite; Carbon black
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    • C10M2201/065—Sulfides; Selenides; Tellurides
    • C10M2201/066—Molybdenum sulfide
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    • C10M2201/16—Carbon dioxide
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    • C10M2201/18—Ammonia
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    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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  • Physics & Mathematics (AREA)
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  • Emergency Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は単心または複数心の光ファイバに発泡被覆層
を施した光ファイバユニットをポリマ製のパイプ内に加
圧ガスで圧送収納した光ファイバケーブルに関し、特に
加圧ガスによる圧送収納に好適な光ファイバケーブル構
造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to light in which an optical fiber unit in which a single-core or plural-core optical fiber is provided with a foam coating layer is pressure-fed and housed in a polymer pipe by a pressurized gas. The present invention relates to a fiber cable, and more particularly to an optical fiber cable structure suitable for pressurized gas storage by pressurized gas.

〔従来の技術〕[Conventional technology]

光ファイバケーブルを布設する方法として、単心また
は複数心の光ファイバを、複数のポリマ製のパイプ（以
下ポリマパイプという。）を集合した、所謂パイプケー
ブル内に、空気などの加圧ガスで圧送収納し、布設する
方法がある。例えば、一例が特開昭59−104607号公報に
開示されている。As a method of laying an optical fiber cable, a single-core or multi-core optical fiber is pressure-fed and stored with a pressurized gas such as air in a so-called pipe cable in which a plurality of polymer pipes (hereinafter referred to as polymer pipes) are assembled. Then, there is a method of laying. For example, one example is disclosed in JP-A-59-104607.

この加圧ガス圧送方式による光ファイバケーブルの布
設方式は、布設に際し、光ファイバに張力などの外力が
かかわらず損傷することがなく、また既設のポリマパイ
プ内への加圧ガス圧送方式であることから、複雑なルー
トへの布設も可能であり、さらに布設後の光ファイバの
交換や、追加布設なども可能で、保守の容易性、布設経
費の低廉化において有効である。The laying method of the optical fiber cable by the pressurized gas pressurizing method does not damage the optical fiber regardless of external force such as tension when laying, and it is the pressurized gas pressurizing method into the existing polymer pipe. In addition, it is possible to lay a complicated route, and it is also possible to replace an optical fiber after the laying, or to lay an additional fiber, which is effective in easiness of maintenance and lowering laying cost.

第２図（ａ）乃至（ｃ）に、この種の従来例としての
光ファイバケーブルの模式的断面構造図を例示する。第
２図（ａ）は光ファイバ素線または光ファイバ心線21を
７本集合し、集合体の外周に充実層24及び発泡被覆層22
を施した構造の光ファイバユニット20の例である。FIGS. 2 (a) to 2 (c) show schematic cross-sectional structural views of a conventional optical fiber cable of this type. FIG. 2 (a) shows an assembly of seven optical fiber wires or optical fiber core wires 21, and a solid layer 24 and a foam coating layer 22 on the outer periphery of the assembly.
1 is an example of an optical fiber unit 20 having a structure in which the structure shown in FIG.

第２図（ｂ）は、第２図（ａ）に示した構造の光ファ
イバユニット20をポリマパイプ23内に圧送した光ファイ
バケーブル201の例である。FIG. 2B shows an example of an optical fiber cable 201 in which the optical fiber unit 20 having the structure shown in FIG.

第２図（ｃ）は、第２図（ｂ）に示した構造の光ファ
イバケーブル201を７本集合し、外周にシース25を施し
たパイプケーブル200の例である。FIG. 2 (c) is an example of a pipe cable 200 in which seven optical fiber cables 201 having the structure shown in FIG. 2 (b) are assembled and a sheath 25 is provided on the outer periphery.

光ファイバユニット20の外層材としては、軽量でかつ
風圧抵抗の大きい設計条件から発泡ポリマ層、特に低密
度ポリエチレン発泡層からなる発泡被覆層22が用いられ
ている。As the outer layer material of the optical fiber unit 20, a foamed polymer layer, particularly a foamed coating layer 22 made of a low-density polyethylene foamed layer is used because of design conditions of light weight and large wind pressure resistance.

光ファイバユニット20を挿入するパイプとしては、ポ
リマ製の、例えばポリエチレンを使用したポリマパイプ
23が採用されている。As the pipe into which the optical fiber unit 20 is inserted, a polymer pipe made of a polymer, for example, polyethylene is used.
23 have been adopted.

しかしながら、光ファイバユニットの外径均一性、パ
イプの成形と均一性及びパイプ内径に対する光ファイバ
ユニット径の最適寸法化を達成しても、光ファイバユニ
ットをパイプ内に圧送、布設するときの圧送到達可能距
離及び圧送速度の点で、伝送網のシステム構成上または
布設に要する経費の面などで不十分である。これらの、
また不十分な原因を究明するため、本発明者らが種々検
討を行った結果、光ファイバユニットとパイプ間の摩擦
係数、及び光ファイバユニットとパイプ間に発生する静
電気が悪い影響を与えていることが判明した。However, even if the outer diameter uniformity of the optical fiber unit, the forming and uniformity of the pipe, and the optimal sizing of the optical fiber unit diameter with respect to the inner diameter of the pipe are achieved, the pressure feeding when the optical fiber unit is pressure-fed and laid in the pipe. In terms of the possible distance and the pumping speed, it is insufficient in terms of the system configuration of the transmission network or the cost required for installation. these,
In addition, as a result of various studies by the present inventors in order to find out the insufficient cause, the friction coefficient between the optical fiber unit and the pipe, and the static electricity generated between the optical fiber unit and the pipe have a bad influence. It has been found.

〔発明が解決しようとする課題〕[Problems to be solved by the invention]

本発明の目的は、検討結果に基づき、光ファイバユニ
ットとパイプ間の摩擦による問題を解決した、加圧ガス
による圧送収納に好適な光ファイバケーブルを提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an optical fiber cable suitable for pressure-feeding and accommodating by pressurized gas, which solves the problem caused by friction between an optical fiber unit and a pipe based on the examination result.

〔課題を解決するための手段〕[Means for solving the problem]

本発明の構成は以下に示す通りである。即ち、単心ま
たは複数心の光ファイバ素線または光ファイバ心線
（１）に発泡層（２）を、または内層充実層を介して発
泡層（２）を施した光ファイバユニット（10）と、該光
ファイバユニット（10）を加圧ガスにより圧送、収納す
るポリマパイプ（３）との組合せを基本単位とする光フ
ァイバケーブルにおいて、 前記基本単位を構成する光ファイバユニット（10）
は、前記加圧ガスの圧送に対する光ファイバユニット
（10）のポリマパイプ（３）内挿入抵抗を低減する抵抗
防止構造を備え、前記抵抗防止構造は、前記光ファイバ
ユニット（10）の最外層に固体滑剤を添加してなること
を特徴とする光ファイバケーブルとしての構成を有す
る。The configuration of the present invention is as described below. That is, an optical fiber unit (10) in which a foamed layer (2) is applied to a single-core or plural-core optical fiber or an optical fiber core (1), or a foamed layer (2) is provided via an inner solid layer. An optical fiber cable having a basic unit in combination with a polymer pipe (3) for pressure-feeding and storing the optical fiber unit (10) with a pressurized gas, wherein the optical fiber unit (10) constituting the basic unit
Comprises a resistance preventing structure for reducing the insertion resistance of the optical fiber unit (10) into the polymer pipe (3) against the pressure feed of the pressurized gas, wherein the resistance preventing structure comprises a solid material in the outermost layer of the optical fiber unit (10). It has a configuration as an optical fiber cable characterized by adding a lubricant.

或いはまた、単心または複数心の光ファイバ素線また
は光ファイバ心線（１）に発泡層（２）を、または内層
充実層を介して発泡層（２）を施した光ファイバユニッ
ト（10）と、該光ファイバユニット（10）を加圧ガスに
より圧送、収納するポリマパイプ（３）との組合わせを
基本単位とする光ファイバケーブルにおいて、 前記基本単位を構成するポリマパイプ（３）は、前記
加圧ガスの圧送に対する光ファイバユニット（10）のポ
リマパイプ（３）内挿入抵抗を低減する抵抗防止構造を
備え、前記抵抗防止構造は、前記光ファイバユニット
（10）を収納する前記ポリマパイプ（３）に固体滑剤を
添加してなることを特徴とする光ファイバケーブルとし
ての構成を有する。Alternatively, an optical fiber unit (10) in which a foamed layer (2) is applied to a single-core or plural-core optical fiber or an optical fiber core (1), or a foamed layer (2) is provided via an inner solid layer. And a polymer pipe (3) for pumping and storing the optical fiber unit (10) with a pressurized gas as a basic unit, wherein the polymer pipe (3) constituting the basic unit is The optical fiber unit (10) is provided with a resistance preventing structure for reducing the insertion resistance of the optical fiber unit (10) in the polymer pipe (3) against the pressure feed of the pressurized gas, and the resistance preventing structure is provided on the polymer pipe (3) for housing the optical fiber unit (10). It has a configuration as an optical fiber cable characterized by adding a solid lubricant.

或いはまた、前記固体滑剤が樹脂表面へ突出して滑性
を与えることを特徴とする光ファイバケーブルとしての
構成を有する。Alternatively, there is provided a configuration as an optical fiber cable, wherein the solid lubricant projects to the resin surface to provide lubricity.

〔作 用〕(Operation)

一般に高分子の滑性を改善するためには、脂肪酸エス
テルや脂肪酸アミド、金属石鹸など高分子に溶融し、高
分子表面に少量が流出することにより効果を表す有機系
滑剤と、ガラスビースや、タルク、PTFE粒、或いはカー
ボン、ボロンナイトライド、シリコン系プラスチック粒
など固体状で、表面に突出している滑剤部分の滑性によ
り、高分子に滑性を与える固体滑剤が用いられる。In general, in order to improve the lubricity of the polymer, an organic lubricant which melts into a polymer such as a fatty acid ester, a fatty acid amide, or a metal soap, and exhibits an effect by flowing a small amount onto the polymer surface, and a glass bead, A solid lubricant, such as talc, PTFE particles, or a solid such as carbon, boron nitride, or silicon-based plastic particles, which gives lubricity to the polymer due to the lubricity of the lubricating portion protruding from the surface is used.

前者の有機系滑剤は、少量添加で有効であること、添
加分散が容易であるなどの利点を有するが、気温や湿度
などにより、高分子への溶解姓が変化し、特性が安定し
ない短所がある。The former organic lubricant has the advantages of being effective with a small amount of addition and being easy to disperse, but has the disadvantage that the solubility in the polymer changes due to temperature and humidity, and the characteristics are not stable. is there.

これに対し、後者の固体滑剤は、高分子表面へ突出し
ている滑剤成分の表面特性や、剥離性により滑性を与え
ているものであるため、気温や湿度などへの滑性の依存
性が小さく、また、有機物のような経時的な分割などの
変質が少ないことから、光ファイバケーブルなどの長期
間使用に対して非常に有効な滑剤である。In contrast, the latter solid lubricant provides lubricity due to the surface properties of the lubricant component protruding to the polymer surface and the releasability, so the lubricity depends on temperature, humidity, etc. It is a very effective lubricant for long-term use, such as an optical fiber cable, because it is small and has little deterioration such as division over time like an organic substance.

上記のような効果により、光ファイバユニットまたは
光ファイバユニットを収納するポリマパイプのいずれ
か、或いは光ファイバユニット及び光ファイバユニット
を収納するポリマパイプの両者に固体滑剤を添加するこ
とにより、光ファイバユニットをポリマパイプ内に圧送
するときに光ファイバユニットとポリマパイプ間に発生
する摩擦力を低減し、良好な圧送特性を確保することが
できる。以下図面にもとづき実施例について説明する。By adding the solid lubricant to either the optical fiber unit or the polymer pipe containing the optical fiber unit, or both the optical fiber unit and the polymer pipe containing the optical fiber unit, the optical fiber unit is connected to the polymer pipe. It is possible to reduce the frictional force generated between the optical fiber unit and the polymer pipe at the time of pumping into the inside, and secure good pumping characteristics. Hereinafter, embodiments will be described with reference to the drawings.

〔実施例〕〔Example〕

第１図は本発明の実施例としての光ファイバケーブル
の模式的断面構造図である。光ファイバ素線または光フ
ァイバ心線１を７本撚り合せた集合体の外周に抵抗防止
剤含有発泡被覆層２を施した光ファイバユニット10を、
抵抗防止剤含有ポリマパイプ３に圧送、収納した構造の
例である。FIG. 1 is a schematic sectional structural view of an optical fiber cable as an embodiment of the present invention. An optical fiber unit 10 in which an anti-resistance agent-containing foam coating layer 2 is applied to the outer periphery of an aggregate of seven optical fiber wires or optical fiber core wires 1 twisted,
This is an example of a structure in which an anti-resistance agent-containing polymer pipe 3 is pumped and stored.

本実施例は光ファイバユニット10とポリマパイプ３の
両方に抵抗防止剤を添加した例である。抵抗防止剤は光
ファイバユニット10とポリマパイプ３双方に相対的な作
用として発現するものであるから、光ファイバユニット
10とポリマパイプ３の両者に必ずしも抵抗防止剤を添
加、含有する必要はない。光ファイバユニット10とポリ
マパイプ３のいずれかに、少くとも抵抗防止剤が含ま
れ、光ファイバケーブル全体の系として抵抗防止剤含有
の系が構成されることにより、光ファイバユニット10の
ポリマパイプ３内圧送収納の圧送特性が改善される。This embodiment is an example in which a resistance inhibitor is added to both the optical fiber unit 10 and the polymer pipe 3. Since the anti-resistance agent is expressed as a relative action on both the optical fiber unit 10 and the polymer pipe 3, the optical fiber unit
It is not always necessary to add and contain an anti-resistance agent to both 10 and the polymer pipe 3. Either the optical fiber unit 10 or the polymer pipe 3 contains at least an anti-resistance agent, and a system containing the anti-resistance agent is configured as a system of the entire optical fiber cable. The storage pumping characteristics are improved.

本発明の光ファイバケーブルに使用する抵抗防止剤と
しては、光ファイバユニット10とポリマパイプ３間の摩
擦係数の影響を防止、軽減する潤滑剤としての滑剤が適
用される。As the resistance preventing agent used in the optical fiber cable of the present invention, a lubricant as a lubricant for preventing and reducing the influence of the friction coefficient between the optical fiber unit 10 and the polymer pipe 3 is applied.

本発明に用いる滑剤としては、例えばカーボン、ボロ
ンナイトライド、タルク、二酸化モリブデンなどの無機
系固体滑剤、PTFE粒などの弗素樹脂系固体滑剤、及びポ
リエチレンなどに反応性ポリオルガノシロキサンをグラ
フトしたシリコン系プラスチック粒などがある。これら
の滑剤を添加した場合の成型シート間の静摩擦係数低減
の効果を第１表に示す。添加量は、いずれもそれぞれ10
重量パーセントである。なお比較例としてオレイン酸ア
ミド0.5重量パーセントを低密度ポリエチレンに添加し
た例も併せて示す。The lubricant used in the present invention includes, for example, inorganic solid lubricants such as carbon, boron nitride, talc, and molybdenum dioxide; fluororesin solid lubricants such as PTFE particles; and silicon-based materials obtained by grafting a reactive polyorganosiloxane to polyethylene or the like. There are plastic grains. Table 1 shows the effect of reducing the static friction coefficient between the molded sheets when these lubricants were added. The amount added was 10
Weight percent. As a comparative example, an example in which 0.5% by weight of oleamide was added to low-density polyethylene is also shown.

第１表に例示したそれぞれのシートa,b,c,d,eを用い
た内径6mmφ、外径8mmφのポリマパイプ試料A,B,C,D,E
を製造した。 Polymer pipe samples A, B, C, D, and E having an inner diameter of 6 mm and an outer diameter of 8 mm using each of the sheets a, b, c, d, and e illustrated in Table 1.
Was manufactured.

また、外径0.25mmφの紫外線硬化性ウレタンアクリレ
ート被覆光ファイバを７心集合し、集合体の外周にNy−
12樹脂で外径1.0mmφに被覆して充実層を施し、更に、
充填層の外周に、外径2.0mmφの発泡度約50％のLDPEに
よる発泡層を、本発明によるオレイン酸アミド0.5重量
パーセント含有の滑剤を添加含有したものと、添加含有
しないものの二処方で発泡被覆層を施した光ファイバユ
ニット試料１及び光ファイバユニット試料２を製造し
た。Further, seven ultraviolet-curable urethane acrylate-coated optical fibers having an outer diameter of 0.25 mmφ were assembled and Ny-
Cover the outer diameter with 1.0mmφ with 12 resin to give a solid layer.
On the outer periphery of the packed layer, a foamed layer made of LDPE having an outer diameter of 2.0 mmφ and a foaming degree of about 50% was foamed in two formulations, one containing a lubricant containing 0.5% by weight of oleic amide according to the present invention and one containing no lubricant. Optical fiber unit sample 1 and optical fiber unit sample 2 provided with the coating layer were manufactured.

光ファイバユニット試料１及び試料２を、さきのポリ
マパイプ試料A,試料B,試料C,試料Ｄのそれぞれのポリマ
パイプ500m長を胴径1mφのドラムに整列巻したそれぞれ
のポリマパイプ３内に圧送し、圧送に要した時間を評価
した。圧送実験は圧縮空気5.0kg/cm2の圧送気体を用い
て行った。評価結果を第２表に示す。The optical fiber unit samples 1 and 2 are pressure-fed into the respective polymer pipes 3 in which 500 m lengths of the respective polymer pipes A, B, C and D are aligned and wound on a drum having a body diameter of 1 mφ. The time required for the evaluation was evaluated. The pumping experiment was performed using a pumping gas of compressed air of 5.0 kg / cm 2 . Table 2 shows the evaluation results.

第１表及び第２表から静摩擦係数と圧送特性の関係は
明確であり、ポリマパイプ３または光ファイバユニット
10のいずれか、或いはポリマパイプ３及び光ファイバユ
ニット10の両者に滑剤を添加することにより圧送特性を
大幅に改善できる。 The relationship between the coefficient of static friction and the pumping characteristics is clear from Tables 1 and 2, and the polymer pipe 3 or the optical fiber unit
By adding a lubricant to any one of the members 10 or both the polymer pipe 3 and the optical fiber unit 10, the pumping characteristics can be greatly improved.

次に固体滑剤を用いた場合の圧送特性の安定性の例と
して、PTFEを固体滑剤として用いた場合と、オレイン酸
アミドを滑剤として用いた場合の圧送特性の比較例を示
す。Next, as an example of the stability of the pumping characteristics when a solid lubricant is used, a comparative example of the pumping characteristics when PTFE is used as a solid lubricant and when oleic amide is used as a lubricant is shown.

光ファイバユニット10としては、さきの固体滑剤添加
の無い試料２を用い、ポリマパイプ３としては、さきの
PTFE10重量パーセント添加の試料Ｃと、第１表に例示し
た比較例のオレイン酸アミドを0.5重量パーセント添加
した材料で製造したポリマパイプ試料Ｅを用いた。As the optical fiber unit 10, the sample 2 without the addition of the solid lubricant was used, and as the polymer pipe 3, the sample 2 was used.
A sample C containing 10% by weight of PTFE and a sample E of a polymer pipe made of a material added with 0.5% by weight of oleic amide of the comparative example illustrated in Table 1 were used.

ポリマパイプ試料Ｃ及び試料Ｅは、さきの圧送特性評
価のときと同様に胴径1mφのドラムに整列巻し、圧送空
気5.0kg/cm2の圧送気体により光ファイバユニット10を
ポリマパイプ３内に圧送したときの圧送時間を評価し
た。The polymer pipe samples C and E were arranged and wound around a drum having a body diameter of 1 mφ in the same manner as in the evaluation of the pumping characteristics, and the optical fiber unit 10 was pumped into the polymer pipe 3 by a pumping gas of 5.0 kg / cm 2 of pumping air. The pumping time was evaluated.

初期の圧送特性と、温度100℃で二箇月間加熱し、熱
変化を与えた後の圧送特性の実験結果を第３表に示す。Table 3 shows the initial pumping characteristics and the experimental results of the pumping characteristics after heating for two months at a temperature of 100 ° C. and giving a thermal change.

第３表の結果からも明らかなように、圧送特性の熱的
な安定性において、固体滑剤添加の本発明の光ファイバ
ケーブルによる試料はＣは非常に優れていることがわか
る。 As is evident from the results in Table 3, the sample using the optical fiber cable of the present invention to which a solid lubricant was added was excellent in the thermal stability of the pumping characteristics.

〔発明の効果〕〔The invention's effect〕

以上説明したように、本発明の光ファイバユニットを
ポリマパイプ内に挿入、空気などの加圧ガスにより圧
送、布設する光ファイバケーブルは、光ファイバユニッ
トとポリマパイプの両方またはいずれかに、加圧ガスの
圧送に対する光ファイバユニットのポリマパイプ内挿入
抵抗を低減する抵抗防止構造として滑剤を添加、含有し
た構造とすることにより、光ファイバユニットの圧送特
性、即ち、圧送距離及び圧送時間の向上をはかることが
できる。As described above, the optical fiber cable according to the present invention is inserted into a polymer pipe, is pressure-fed by a pressurized gas such as air, and is laid. By adding and containing a lubricant as a resistance preventing structure for reducing the insertion resistance of the optical fiber unit in the polymer pipe against the pumping, the pumping characteristics of the optical fiber unit, that is, the pumping distance and the pumping time can be improved. .

特に、固体滑剤を使用して上記の効果を生ずることに
より、光ファイバユニットの圧送特性を熱的に安定と
し、経時変化を抑止することができる。この熱的特性の
安定、向上は、特に通電状態で光ファイバケーブル全体
の温度が70℃以上と高くなる電力ケーブルと複合した複
合ケーブルなどの高温使用ケーブルに適用する場合、長
期的な圧送特性の安定性の面で有効である。In particular, by using a solid lubricant to produce the above-described effects, the pumping characteristics of the optical fiber unit can be made thermally stable, and changes over time can be suppressed. The stability and improvement of this thermal characteristic is especially important when applied to high-temperature cables such as composite cables combined with power cables where the temperature of the entire optical fiber cable rises to 70 ° C or higher in the energized state. It is effective in terms of stability.

【図面の簡単な説明】[Brief description of the drawings]

第１図は本発明の実施例としての光ファイバケーブルの
模式的断面構造図、 第２図は（ａ）乃至（ｃ）は従来例としての光ファイバ
ケーブルの模式的断面構造図で、第２図（ａ）は光ファ
イバ素線または光ファイバ心線21を７本集合し、集合体
の外周に充実層24及び発泡被覆層22を施した構造の光フ
ァイバユニット20の例、第２図（ｂ）は、光ファイバユ
ニット20をポリマパイプ23内に圧送した光ファイバケー
ブル201の例、第２図（ｃ）は光ファイバケーブル201を
７本集合し、外周にシース25を施したパイプケーブル20
0の例である。 1,21……光ファイバ素線または光ファイバ心線 ２……抵抗防止剤含有発泡被覆層 ３……抵抗防止剤含有ポリマパイプ 10,20……光ファイバユニット 22……発泡被覆層 23……ポリマパイプ 24……充実層 25……シース 200……パイプケーブル 201……光ファイバケーブルFIG. 1 is a schematic sectional structural view of an optical fiber cable as an embodiment of the present invention, and FIGS. 2A to 2C are schematic sectional structural views of an optical fiber cable as a conventional example. FIG. 2A shows an example of an optical fiber unit 20 having a structure in which seven optical fiber wires or optical fiber cores 21 are assembled and a solid layer 24 and a foam coating layer 22 are provided on the outer periphery of the aggregate. 2B shows an example of an optical fiber cable 201 in which the optical fiber unit 20 is pressure-fed into a polymer pipe 23. FIG. 2C shows a pipe cable 20 in which seven optical fiber cables 201 are assembled and a sheath 25 is provided on the outer periphery.
This is an example of 0. 1,21 optical fiber or optical fiber core 2 ... foaming coating layer containing anti-resistance agent 3 ... polymer pipe containing anti-resistance agent 10,20 ... optical fiber unit 22 ... foaming coating layer 23 ... polymer pipe 24: solid layer 25: sheath 200: pipe cable 201: optical fiber cable

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭59−104607（ＪＰ，Ａ) 特開 昭60−111211（ＪＰ，Ａ) 特開 昭60−262115（ＪＰ，Ａ) 実開 昭63−43112（ＪＰ，Ｕ) 実開 昭59−138804（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) G02B 6/44 366──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-104607 (JP, A) JP-A-60-111211 (JP, A) JP-A-60-262115 (JP, A) 43112 (JP, U) Shokai Sho 59-138804 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) G02B 6/44 366

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】単心または複数心の光ファイバ素線または
光ファイバ心線に発泡層を、または内層充実層を介して
発泡層を施した光ファイバユニットと、該光ファイバユ
ニットを加圧ガスにより圧送、収納するポリマパイプと
の組合せを基本単位とする光ファイバケーブルにおい
て、 前記基本単位を構成する光ファイバユニットは、前記加
圧ガスの圧送に対する光ファイバユニットのポリマパイ
プ内挿入抵抗を低減する抵抗防止構造を備え、前記抵抗
防止構造は、前記光ファイバユニットの最外層に固体滑
剤を添加してなることを特徴とする光ファイバケーブ
ル。An optical fiber unit comprising a single-core or multiple-core optical fiber or an optical fiber having a foamed layer or a foamed layer via an inner solid layer, and a pressurized gas. In an optical fiber cable having a basic unit in combination with a polymer pipe to be pumped and housed, the optical fiber unit constituting the basic unit is provided with resistance prevention for reducing the insertion resistance of the optical fiber unit in the polymer pipe with respect to the pressurized gas supply. An optical fiber cable having a structure, wherein the resistance preventing structure is obtained by adding a solid lubricant to an outermost layer of the optical fiber unit. 【請求項２】単心または複数心の光ファイバ素線または
光ファイバ心線に発泡層を、または内層充実層を介して
発泡層を施した光ファイバユニットと、該光ファイバユ
ニットを加圧ガスにより圧送、収納するポリマパイプと
の組合わせを基本単位とする光ファイバケーブルにおい
て、 前記基本単位を構成するポリマパイプは、前記加圧ガス
の圧送に対する光ファイバユニットのポリマパイプ内挿
入抵抗を低減する抵抗防止構造を備え、前記抵抗防止構
造は、前記光ファイバユニットを収納する前記ポリマパ
イプに固体滑剤を添加してなることを特徴とする光ファ
イバケーブル。2. An optical fiber unit in which a foamed layer is provided on a single-core or plural-core optical fiber or an optical fiber core, or a foamed layer is provided via an inner solid layer, and the optical fiber unit is pressurized with a gas. In an optical fiber cable having a basic unit in combination with a polymer pipe to be pumped and housed, a polymer pipe constituting the basic unit has a resistance preventing structure for reducing the insertion resistance of the optical fiber unit in the polymer pipe with respect to the pressurized gas supply. Wherein the resistance preventing structure comprises a solid lubricant added to the polymer pipe accommodating the optical fiber unit. 【請求項３】前記固体滑剤が樹脂表面へ突出して滑性を
与えることを特徴とする請求項第１項、または第２項の
内、いずれか１項記載の光ファイバケーブル。3. The optical fiber cable according to claim 1, wherein the solid lubricant projects to the resin surface to provide lubricity.
JP1055791A 1988-05-18 1989-03-08 Fiber optic cable Expired - Lifetime JP2780310B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1055791A JP2780310B2 (en) 1988-05-18 1989-03-08 Fiber optic cable
US07/349,998 US4952021A (en) 1988-05-18 1989-05-10 Pressure transporting system
AU34881/89A AU617173C (en) 1988-05-18 1989-05-17 A pressure transporting system for an improved fibre

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63-121496 1988-05-18
JP12149688 1988-05-18
JP1055791A JP2780310B2 (en) 1988-05-18 1989-03-08 Fiber optic cable

Publications (2)

Publication Number Publication Date
JPH0250111A JPH0250111A (en) 1990-02-20
JP2780310B2 true JP2780310B2 (en) 1998-07-30

Family

ID=26396701

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1055791A Expired - Lifetime JP2780310B2 (en) 1988-05-18 1989-03-08 Fiber optic cable

Country Status (1)

Country Link
JP (1) JP2780310B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2571979B2 (en) * 1990-11-20 1997-01-16 三菱電線工業株式会社 Fiber optic cable
JP2504346B2 (en) * 1991-06-11 1996-06-05 日立電線株式会社 Polymer pipe for pneumatic fiber pneumatic delivery
EP0620627B1 (en) * 1993-04-10 1997-07-02 Sumitomo Electric Industries, Ltd. Method and apparatus for inserting a communication wire through a pipeline by air flow
JP2011043242A (en) * 2010-11-29 2011-03-03 Kubota-Ci Co Sleeve
JP6331260B2 (en) * 2013-04-25 2018-05-30 住友電気工業株式会社 Fiber optic cable

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138804U (en) * 1983-03-08 1984-09-17 株式会社フジクラ Optical fiber cable for overhead ground wire
JPS60111211A (en) * 1983-11-21 1985-06-17 Fujikura Ltd Manufacture of metallic tube for optical fiber cable
JPS60262115A (en) * 1984-06-08 1985-12-25 Sumitomo Electric Ind Ltd Fiber for optical transmission
JPH0514253Y2 (en) * 1986-09-08 1993-04-16

Also Published As

Publication number Publication date
JPH0250111A (en) 1990-02-20

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