WO2017020369A1 - 一种轻型全介质自承式光缆 - Google Patents

一种轻型全介质自承式光缆 Download PDF

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Publication number
WO2017020369A1
WO2017020369A1 PCT/CN2015/087969 CN2015087969W WO2017020369A1 WO 2017020369 A1 WO2017020369 A1 WO 2017020369A1 CN 2015087969 W CN2015087969 W CN 2015087969W WO 2017020369 A1 WO2017020369 A1 WO 2017020369A1
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WIPO (PCT)
Prior art keywords
cable
optical
light
outer sheath
units
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PCT/CN2015/087969
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English (en)
French (fr)
Inventor
吴祝军
李新建
冒爱峰
缪斌
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江苏中天科技股份有限公司
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Publication of WO2017020369A1 publication Critical patent/WO2017020369A1/zh

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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
    • G02B6/441—Optical cables built up from sub-bundles
    • G02B6/4414—Optical cables built up from sub-bundles with internal serpentine waveguides
    • 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
    • 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
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • 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
    • G02B6/443—Protective covering
    • G02B6/4432—Protective covering with fibre reinforcements
    • G02B6/4433—Double reinforcement laying in straight line with optical transmission element
    • 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
    • G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials

Definitions

  • the invention relates to a light all-media self-supporting optical cable used in the field of optical communication.
  • the structure of the cable is also constantly being updated according to the needs of the application.
  • the traditional optical cable core is a five-unit and above twisted structure.
  • the weight of the cable core directly affects the load-bearing capacity of the reinforcing member.
  • the number of cable core units increases, the weight of the cable core increases, the load-bearing capacity of the reinforcing member needs to be increased, the reinforcing member is thickened, and the optical cable is added.
  • the self-weight, the manufacturing cost of the cable will also increase. Therefore, it is necessary to design a compact cable with a light weight.
  • the invention provides a light all-media self-supporting optical cable.
  • a lightweight all-media self-supporting optical cable includes an outer sheath and a cable core, and an inner cable is provided at the inner wall of the outer sheath, the cable core is composed of three units SZ, and the three units are composed of One light unit and two non-metal reinforcing units are composed of or consist of two light units and one non-metal reinforcing unit, and the optical unit is provided with an optical fiber and a fiber paste filled in the entire light unit for fixing the optical fiber.
  • a water blocking strip for covering the cable core is disposed between the cable core and the outer sheath.
  • a water blocking yarn I is disposed in a center formed by twisting the light unit with the non-metal reinforcing unit SZ.
  • the cable core and the outer sheath are filled with a cable for covering the core.
  • a water blocking yarn II is disposed in a center formed by twisting the light unit with the non-metal reinforcing unit SZ, and the water blocking yarn III is wound around the core.
  • the invention has the advantages that the three cores are mutually SZ stranded to form the cable core, the diameter of the optical cable is reduced, the cable structure is simplified, and the optical cable structure is miniaturized, and one or two non-metallic reinforcing units are arranged in the core structure.
  • the utility model has the advantages of light weight, large tensile strength and small elongation, which ensures the tensile strength of the optical cable, is easy to lay, and has the function of lightning protection, and the cable of the inner wall of the outer sheath can withstand a certain tensile force and a high temperature. All-weather communication, not easy to pull hair, and environmentally friendly, can easily open and strip the outer sheath of the cable, which is convenient for construction.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • Embodiment 2 is a schematic structural view of Embodiment 2 of the present invention.
  • Embodiment 3 is a schematic structural view of Embodiment 3 of the present invention.
  • Embodiment 4 is a schematic structural view of Embodiment 4 of the present invention.
  • a light full-media self-supporting optical cable includes an outer sheath 1 and a cable core, and an open cable 6 is disposed at an inner wall of the outer sheath to withstand a certain tensile force and a high temperature to achieve all-weather Communication, not easy to pull hair, and environmentally friendly, can easily open and strip the outer sheath of the cable for easy construction.
  • the cable core is composed of a light unit 3 and two non-metallic reinforcing units 5SZ, which reduces the diameter of the cable and simplifies the cable structure.
  • the non-metallic reinforcing unit is light in weight, large in tensile strength, and small in elongation, the tensile strength of the optical cable is ensured, and it is easy to lay, and the optical fiber 2 is disposed in the optical unit and filled in the entire optical unit.
  • the fiber paste 7 for fixing the optical fiber in order to enhance the water blocking performance, a water blocking strip 8 for covering the cable core (three units) is disposed between the cable core and the outer sheath 1, and the light unit 3 is The water blocking yarn I4-1 is disposed in the center formed by the stranding of the metal reinforcing unit 5SZ.
  • the structure is basically the same as that of Embodiment 1, except that the core is composed of two light units 3 and one non-metallic reinforcing unit 5SZ stranded.
  • a light full-media self-supporting optical cable includes an outer sheath 1 and a cable core, and an open cable 6 is disposed at an inner wall of the outer sheath to withstand a certain pulling force and a high temperature to achieve all-weather Communication, not easy to pull hair, and environmentally friendly, can easily open and strip the outer sheath of the cable for easy construction.
  • the cable core is composed of a light unit 3 and two non-metallic reinforcing units 5SZ, which reduces the diameter of the cable and simplifies the cable structure.
  • the non-metallic reinforcing unit is light in weight, large in tensile strength, and small in elongation, the tensile strength of the optical cable is ensured, and it is easy to lay, and the optical fiber 2 is disposed in the optical unit and filled in the entire light.
  • the fiber paste 7 for fixing the optical fiber in the unit is filled with a cable 9 for covering the core between the core and the outer sheath.
  • the structure is basically the same as that of Embodiment 3, except that the cable core is composed of two light units 3 and one non-metal reinforcing unit 5SZ, in order to enhance the water blocking performance, the light unit and the non-metal reinforcing unit SZ A water blocking yarn II4-2 is disposed in the center formed after the stranding, and a water blocking yarn III4-3 is wound around the core.
  • the optical cable of the invention is a self-supporting optical cable. When used as an overhead laying cable, it does not need to be attached to a load-bearing hanging wire made of steel strand or steel wire, and the construction is erected once, and the first erection when the conventional optical fiber cable is removed is removed. The process of bearing the hanging line does not have a cumbersome hooking procedure, which enables more convenient construction laying and reduces construction costs.
  • the optical cable of the invention has mechanical and environmental properties such as good tensile, bending resistance, repeated bending, impact, flattening, torsion, high and low temperature circulation, water seepage, etc., especially when the bending performance of the optical cable has a bending state of 6 times the diameter of the optical cable. The additional attenuation of the fiber does not exceed 0.05 dB.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

一种轻型全介质自承式光缆，包括外护套（1）和缆芯，外护套（1）的内壁设有开缆索（6），缆芯由三个单元SZ绞合构成，三个单元由一个光单元（3）和两个非金属加强单元（5）组成或者由两个光单元（3）和一个非金属加强单元（5）组成。光单元（3）内设置有光纤（2）和填充在整个光单元（3）内且用于固定光纤（2）的纤膏（7）。该光缆采用三个单元绞合形成缆芯，减小了光缆的直径，简化了结构，有利用小型化。非金属加强单元（5）保证光缆的抗拉强度，利于铺设和防雷。开缆索（6）能承受一定拉力和较高温度，便于开剥光缆外护套。

Description

一种轻型全介质自承式光缆 技术领域
本发明涉及的是一种用于光通信领域的一种轻型全介质自承式光缆。
背景技术
随着通信线缆技术的不断发展，光缆的应用场合也越来越多。光缆的结构型式也根据应用场合的需要，不断推陈出新。传统的光缆缆芯是五单元及以上绞合结构,缆芯自重直接影响决定加强件的承重能力，缆芯单元数增加自重加重，加强件承重能力需增加，加强件增粗，又增加了光缆的自重，光缆的制造成本也会随着增加。故需要设计结构紧凑、自重轻的光缆。
发明内容
本发明提供一种轻型全介质自承式光缆。
本发明采用的技术方案是：
一种轻型全介质自承式光缆，包括外护套与缆芯，所述外护套的内壁处设有开缆索，所述缆芯由三个单元SZ绞合构成，所述三个单元由一个光单元和两个非金属加强单元组成或由两个光单元和一个非金属加强单元组成，所述光单元内设置有光纤和填充在整个光单元内且用于固定光纤的纤膏。
进一步的，所述缆芯与外护套间设置有用于包覆缆芯的阻水带。
更进一步的，所述光单元与非金属加强单元SZ绞合后形成的中心内设有阻水纱Ⅰ。
另一种方式，所述缆芯与外护套间填充有用于包覆缆芯的缆膏。
再一种方式，所述光单元与非金属加强单元SZ绞合后形成的中心内设有阻水纱Ⅱ，所述缆芯外缠绕有阻水纱Ⅲ。
本发明的优点：采用三个单元相互SZ绞合方式形成缆芯，减小光缆的直径，简化光缆结构，有利于光缆结构的小型化，缆芯结构中有一根或两根非金属加强单元，其质量轻、抗拉强度大、延伸率小，保证了光缆的抗拉强度，便于敷设，具备了防雷击功能，外护套内壁的开缆索能够承受一定的拉力与较高的温度，实现全天候通信，不易拉毛，且环保，能轻易的开剥光缆外护套，便于施工。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细描述。
图1为本发明实施例1的结构示意图；
图2为本发明实施例2的结构示意图；
图3为本发明实施例3的结构示意图；
图4为本发明实施例4的结构示意图。
其中：1、外护套；2、光纤；3、光单元；4-1、阻水纱Ⅰ；4-2、阻水纱Ⅱ；4-3、阻水纱Ⅲ；5、非金属加强单元；6、开缆索；7、纤膏；8、阻水带；9、缆膏。
具体实施方式
实施例1
如图1所示，一种轻型全介质自承式光缆，包括外护套1与缆芯，在外护套的内壁处设置了开缆索6，能够承受一定的拉力与较高的温度，实现全天候通信，不易拉毛，且环保，能轻易的开剥光缆外护套，便于施工，缆芯由一个光单元3和两个非金属加强单元5SZ绞合构成，缩小光缆的直径，简化光缆结构，有利于光缆结构的小型化，由于非金属加强单元质量轻、抗拉强度大、延伸率小，保证了光缆的抗拉强度，便于敷设，在光单元内设置有光纤2和填充在整个光单元内且用于固定光纤的纤膏7，为了增强阻水性能，在缆芯与外护套1间设置有用于包覆缆芯(三个单元)的阻水带8，并且在光单元3与非金属加强单元5SZ绞合后形成的中心内设置了阻水纱Ⅰ4-1。
实施例2
如图2所示，结构与实施例1基本相同，区别在于缆芯由两个光单元3和一个非金属加强单元5SZ绞合构成。
实施例3
如图3所示，一种轻型全介质自承式光缆，包括外护套1与缆芯，在外护套的内壁处设置了开缆索6，能够承受一定的拉力与较高的温度，实现全天候通信，不易拉毛，且环保，能轻易的开剥光缆外护套，便于施工，缆芯由一个光单元3和两个非金属加强单元5SZ绞合构成，缩小光缆的直径，简化光缆结构，有利于光缆结构的小型化，由于非金属加强单元质量轻、抗拉强度大、延伸率小，保证了光缆的抗拉强度，便于敷设，在光单元内设置有光纤2和填充在整个光 单元内且用于固定光纤的纤膏7，为了增强阻水性能，在缆芯与外护套间填充有用于包覆缆芯的缆膏9。
实施例4
如图4所示，结构与实施例3基本相同，区别在于缆芯由两个光单元3和一个非金属加强单元5SZ绞合构成，为了增强阻水性能，在光单元与非金属加强单元SZ绞合后形成的中心内设置阻水纱Ⅱ4-2，并且缆芯外缠绕有阻水纱Ⅲ4-3。
本发明光缆是一种自承式光缆，在作为架空敷设使用时，无需附挂在钢绞线或钢丝制成的承力吊线上，施工架设时一次施工，去掉了常规架设光缆时的先架设承力吊线的过程，没有了繁琐的挂钩程序，实现更便捷的施工敷设，降低了施工成本。同时，本发明光缆具备良好拉伸、抗弯曲、反复弯曲、冲击、压扁、扭转、高低温度循环、渗水等机械、环境性能，尤其是光缆的弯曲性能具备6倍光缆直径的弯曲状态下，光纤的附加衰减不超过0.05dB。

Claims (5)

  1. 一种轻型全介质自承式光缆，包括外护套与缆芯，其特征在于：所述外护套的内壁处设有开缆索，所述缆芯由三个单元SZ绞合构成，所述三个单元由一个光单元和两个非金属加强单元组成或由两个光单元和一个非金属加强单元组成，所述光单元内设置有光纤和填充在整个光单元内且用于固定光纤的纤膏。
  2. 根据权利要求1所述的一种轻型全介质自承式光缆，其特征在于：所述缆芯与外护套间设置有用于包覆缆芯的阻水带。
  3. 根据权利要求2所述的一种轻型全介质自承式光缆，其特征在于：所述光单元与非金属加强单元SZ绞合后形成的中心内设有阻水纱Ⅰ。
  4. 根据权利要求1所述的一种轻型全介质自承式光缆，其特征在于：所述缆芯与外护套间填充有用于包覆缆芯的缆膏。
  5. 根据权利要求1所述的一种轻型全介质自承式光缆，其特征在于：所述光单元与非金属加强单元SZ绞合后形成的中心内设有阻水纱Ⅱ，所述缆芯外缠绕有阻水纱Ⅲ。
PCT/CN2015/087969 2015-08-06 2015-08-25 一种轻型全介质自承式光缆 WO2017020369A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN107678112A (zh) * 2017-11-10 2018-02-09 宁波盈谷电子科技有限公司 一种微型全介质自承式光缆
CN111596427A (zh) * 2020-05-29 2020-08-28 江苏中天科技股份有限公司 气吹微缆及其制备方法
CN114994844A (zh) * 2022-05-26 2022-09-02 宏安集团有限公司 一种双色条全介质自承光缆

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US20120134634A1 (en) * 2010-08-17 2012-05-31 David Keller Fiber optic cable with improved low temperature and compression resistance
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