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CN87105513A - 光缆 - Google Patents

光缆 Download PDF

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Publication number
CN87105513A
CN87105513A CN87105513.9A CN87105513A CN87105513A CN 87105513 A CN87105513 A CN 87105513A CN 87105513 A CN87105513 A CN 87105513A CN 87105513 A CN87105513 A CN 87105513A
Authority
CN
China
Prior art keywords
reinforcing element
optical cable
pipe
reinforcing
fibre bundle
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.)
Granted
Application number
CN87105513.9A
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English (en)
Other versions
CN1020961C (zh
Inventor
艾伦·詹姆斯·皮科克
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Telephone Cables Ltd
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Telephone Cables Ltd
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Publication date
Application filed by Telephone Cables Ltd filed Critical Telephone Cables Ltd
Publication of CN87105513A publication Critical patent/CN87105513A/zh
Application granted granted Critical
Publication of CN1020961C publication Critical patent/CN1020961C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4415Cables for special applications
    • G02B6/4416Heterogeneous cables
    • G02B6/4422Heterogeneous cables of the overhead type

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)
  • Glass Compositions (AREA)
  • Laser Surgery Devices (AREA)
  • Surgical Instruments (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Eye Examination Apparatus (AREA)
  • Insulated Conductors (AREA)

Abstract

一种光纤电缆,特别是一种架空电缆在其外护套(3)内,具有4或5个加强元件(1),在由加强元件(1)所形成的间隙空间内装容有至少一根光纤束(6、6.1),这种电缆的结构对于被安装在相距远达1000米的铁塔上来说,具有足够的拉伸强度。

Description

本发明涉及一种光缆,尤其是涉及那种已知为架空电缆类的光缆,这种架空电缆设计成能自由地悬架在相距远达1千米的间隔的支承物上。
在其最广阔的领域内,本发明包括这样一种光缆,该光缆在一外护套内至少有三个纵向延伸的加强元件,在这些加强元件中间至少有一个间隙空间,在该空间中松弛地容纳着一包括有多根光纤的光纤束件。
光纤可以是一绞合光纤束,或是一光纤带、或叠在一起的多条光纤带,或其他通常的结构型式。
光纤束件最好包容在一管子内,该管子的尺寸能容许光纤在其里面一定程度的横向移动,该管子内最好充有如油脂那样的阻塞水的物质。阻塞水的物质也可以充填在相邻加强元件之间的空隙内和加强元件与外护套之间的空隙内。
用作为一架空电缆,该加强元件当然必然能对电缆的拉伸提供足够的抵抗力,以防当电缆悬架在相隔距离为其最大的设计距离的二支撑物之间时作用在光纤上的不适当的应力。
并且,对架空电缆来说,对给定的加强元件的总的截面积,特别希望其具有最小的外径,同时却具有足够的间隙空间来容纳光纤束。
我们发现对圆形横截面的加强元件来说,一般有四或五个加强元件。这些加强元件最好是由玻璃增强塑料或其他适宜的高分子材料绞合在一起成螺旋状结构形成。
在一装有4个圆截面的加强元件的架空电缆中,光纤束一般在由相邻的加强元件与包围在外面的外护套的内表面之间形成的空隙通道中围绕加强元件而绞合。这些通道具有这样的高度,使得光纤束与外护套的内表面分离开。这样在电缆安装和使用时,能保护光纤抵御外部压力。
加强元件的直径例如可以是约为5毫米,这可以许可一个外径约为2毫米,并容纳例如是4根光纤的管子被装容在所述的空隙通道内而不与外护套的内表面相接触。在这种情况下,可在4个绞合的加强元件之间的中央通道内设置一减震缓冲元件。
在使用五个加强元件的情况下,光纤一般装容在由加强元件包围而成的中央通道内。
现在参阅附图1和附图2,通过举例说明根据本发明的架空电缆的二种变换形式。附图中示出了二种电缆形式的横截面。
首先参阅图1,图中示出了包括有4个圆形横截面的加强元件1的电缆,这些加强元件由玻璃增强塑料材料制成,每个直径约为5毫米,围绕一中心减震缓冲垫料2而绞合在一起。垫料2由聚乙烯制成,直径约为2毫米。加强元件被包围在一紧密贴合的聚乙稀或其他聚合物外护套3内,护套3的壁厚约为1.5毫米。
在形成在相邻的各对加强元件1之间的四个通道4内,放有4根光纤元件5,每根包括有一由合适的聚合物制成的直径为2毫米的管子7,管子7内有一由4根单根形式光纤6组成的光纤束,并充有油脂或其他阻塞水的化合物,使能允许光纤在管内一定程度的横向移动。通道4具有这样的高度,使得光纤元件5能与包围在外面的护套3的内表面相隔开,从而保护抵御外部压力。
在加强元件1,光纤元件5和护套3之间的间隙空间中也可以充填适当的阻塞水的化合物,以免水份沿着电缆渗入。
外护套可以容有一适当的垫料,以提供一个足够强度的抵抗力。
图2中所示的第2种电缆包括五个绞合在一起的加强元件1,类似于图1所示电缆的加强元件,并同样由一聚乙烯外护套3包围。
在这一实施例中,由相邻的加强元件1与护套3内表面之间空隙形成的通道的大小,不足以装容具有上述实施例中那样直径的光纤元件而不与外护套接触。在这种情况下,16根光纤6.1被装容在一单根聚合物管子8内,管子8的直径约为3.25毫米,位于由绞合的加强元件1所包围的中央通道9内。管子8内充有能允许光纤在管内移动的油脂或其他适宜的阻塞水的化合物,(如上述实施例),在加强元件1,管子8和护套3之间的空隙内也可以充有阻塞水的化合物。光纤6.1可以绞合在一起,或以4×4的排列叠放在一起或设置成任何其他通道的形式。
光纤如同前一个实施例一样受到保护以抵御外部压力。
在有些情况下,加强元件可以包一层塑料材料,给予另外的机械和/或环境保护。

Claims (10)

1、一种光缆,包括一装容有多个纵向延伸的加强元件(1)和光纤(6,6.1)的外护套(3),其特征在于有至少三个所述的加强元件(1),并且光纤(6,6.1)为至少一束的形式松驰地装容在加强元件(1)之间的一相应的间隙空间内。
2、根据权利要求1所述的光缆,其特征在于每一光纤束(6,6.1)被装容在一管子(7,8)内,管子的尺寸容许其内的光纤的一定程度的横向移动。
3、根据权利要求2所述的光缆,其特征在于每一管子(7,8)中充有一种阻塞水的物质。
4、根据权利要求2所述的光缆,其特征在于阻塞水的物质是装在相邻的加强元件(1)之间,以及加强元件(1)与外护套(3)之间的间隙空间内。
5、根据权利要求3或4所述的光缆,其特征在于该阻塞水的物质是基本上充填在管子(7,8)中的油脂。
6、根据上述任一权利要求的光缆,其特征在于它有4或5个圆形截面的加强元件(1)。
7、根据上述任一权利要求的光缆,其特征在于加强元件(1)是由玻璃增强塑料材料绞合在一起成一螺旋状结构。
8、根据权利要求6所述的光缆,其特征在于它有4个圆形截面的加强元件(1),在形成于相邻加强元件1和包围在外面的护套(3)的内表面之间的空隙通道内,装有多根围绕加强元件(1)绞合的所述的光纤束(6),这些通道的高度是能使光纤束与护套的内表面相间隔开。
9、根据权利要求8所述的光缆,其特征在于一减震缓冲元件(2)是被诸加强元件(1)所包围。
10、根据权利要求6所述的光缆,其特征在于它有5个加强元件(1),且在加强元件(1)所包围的中央通道内设置有一光纤束(6.1)。
CN87105513A 1986-08-07 1987-08-07 光缆 Expired - Lifetime CN1020961C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8619308 1986-08-07
GB868619308A GB8619308D0 (en) 1986-08-07 1986-08-07 Optical cables

Publications (2)

Publication Number Publication Date
CN87105513A true CN87105513A (zh) 1988-02-17
CN1020961C CN1020961C (zh) 1993-05-26

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CN87105513A Expired - Lifetime CN1020961C (zh) 1986-08-07 1987-08-07 光缆

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US (1) US4822133A (zh)
EP (1) EP0256704B1 (zh)
JP (1) JPS6343112A (zh)
CN (1) CN1020961C (zh)
AT (1) ATE75327T1 (zh)
AU (1) AU601461B2 (zh)
CA (1) CA1291889C (zh)
DE (1) DE3778447D1 (zh)
ES (1) ES2031508T3 (zh)
FI (1) FI873421A (zh)
GB (2) GB8619308D0 (zh)
IN (1) IN171045B (zh)
MY (1) MY100856A (zh)
NO (1) NO172824B (zh)
NZ (1) NZ221334A (zh)
PT (1) PT85511B (zh)
ZA (1) ZA872668B (zh)

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CN107608043A (zh) * 2017-09-11 2018-01-19 长飞光纤光缆股份有限公司 一种全介质自承式防鼠引入光缆

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CN107608043A (zh) * 2017-09-11 2018-01-19 长飞光纤光缆股份有限公司 一种全介质自承式防鼠引入光缆

Also Published As

Publication number Publication date
NZ221334A (en) 1989-08-29
AU7660087A (en) 1988-02-11
NO172824B (no) 1993-06-01
CN1020961C (zh) 1993-05-26
IN171045B (zh) 1992-07-04
CA1291889C (en) 1991-11-12
NO873292L (no) 1988-02-08
ZA872668B (en) 1987-11-25
ATE75327T1 (de) 1992-05-15
EP0256704B1 (en) 1992-04-22
GB2193583B (en) 1990-05-16
NO873292D0 (no) 1987-08-06
FI873421A0 (fi) 1987-08-06
EP0256704A1 (en) 1988-02-24
US4822133A (en) 1989-04-18
DE3778447D1 (de) 1992-05-27
MY100856A (en) 1991-03-15
ES2031508T3 (es) 1992-12-16
AU601461B2 (en) 1990-09-13
GB8702554D0 (en) 1987-03-11
FI873421A (fi) 1988-02-08
GB2193583A (en) 1988-02-10
GB8619308D0 (en) 1986-09-17
PT85511A (pt) 1988-08-17
PT85511B (pt) 1993-07-30
JPS6343112A (ja) 1988-02-24

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