High-flame-retardance anti-rat-biting center pipe type optical cable

A central tube type, anti-rat bite technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of reduced structural strength of optical cables, squirrel bites of optical cables, structural instability, etc., to overcome low structural strength and good bending performance. , the effect of improving softness

Pending Publication Date: 2019-03-08
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, aerial optical cables in the field are easily bitten by squirrels, causing irreversible damage to the optical cables, and may also be affected by natural disasters such as fires.
In the existing optical cable structure, in order to improve the tear resistance of the cable, a metal composite tape layer is usually provided, usually a steel-plastic composite tape or an aluminum-plastic composite tape. Wound outside the optical fiber, so the overall structural strength of the optical cable is reduced. At the same time, the metal composite tape is easy to warp during the longitudinal wrapping process, resulting in unstable structure and easy to be bitten by squirrels.

Method used

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  • High-flame-retardance anti-rat-biting center pipe type optical cable
  • High-flame-retardance anti-rat-biting center pipe type optical cable

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Such as Figure 1-2 As shown, a high flame-retardant rodent-proof central tube type optical cable, the optical cable includes an optical fiber 1, a central tube 2, a glass fiber tape 3, an aluminum alloy tube 4, and an outer sheath layer 5 from the inside to the outside; The optical fiber 1 is placed in the central tube 2 and arranged along the length direction of the central tube 2; the optical cable 1 adopts a single-mode optical fiber, and the central tube 2 is made of polybutylene terephthalate; the interior of the central tube 2 Fill the fiber paste 6, the fiber paste 6 squeezes the optical fiber 1 in the center; the center tube 2 is wrapped with a layer of glass fiber tape 3, the thickness of the glass fiber tape 3 is 0.2 mm, and the thickness of the glass fiber tape 3 on the surface of the center tube is controlled. The overlap rate is 30%; the aluminum alloy tube 4 is arranged outside the glass fiber band 3, and the alloy tube 4 is bonded around the glass fiber ...

Embodiment 2

[0021] Such as Figure 1-2 As shown, a high flame-retardant rodent-proof central tube type optical cable, the optical cable includes an optical fiber 1, a central tube 2, a glass fiber tape 3, an aluminum alloy tube 4, and an outer sheath layer 5 from the inside to the outside; The optical fiber 1 is placed in the central tube 2 and arranged along the length direction of the central tube 2; the optical cable 1 adopts a light beam, and the light beam contains 20 optical fibers, and the central tube 2 is made of polypropylene; the central tube 2. The inside is filled with fiber paste 6, and the fiber paste 6 squeezes the optical fiber 1 at the center; the center tube 2 is wrapped with a layer of glass fiber tape 3, and the thickness of the glass fiber tape 3 is 0.2mm. The overlapping rate of the surface is 20%; the aluminum alloy tube 4 is arranged outside the glass fiber band 3, and the alloy tube 4 is bonded by the aluminum alloy band around the glass fiber band 3 to form a cl...

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Abstract

The invention discloses a high-flame-retardance anti-rat-biting center pipe type optical cable. The high-flame-retardance anti-rat-biting center pipe type optical cable sequentially comprises an optical fiber, a center pipe, a glass fiber band, an aluminum alloy pipe and an outer sheath layer from inside to outside. The optical fiber is arranged in the center pipe and arranged in the length direction of the center pipe. The center pipe is filled with fiber paste. The center pipe is wrapped by the glass fiber band, the aluminum alloy pipe is arranged outside the glass fiber band, the aluminum alloy pipe forms a closed structure in the mode that an aluminum alloy band surrounds the glass fiber band for adhesion, a tubular body is formed through argon arc welding, the exterior of the aluminumalloy pipe is of a spiral wave-shaped structure, and embossing is rolled on the outer surface of the aluminum alloy pipe. The outer sheath layer is extruded outside the aluminum alloy pipe. The spiral wave-shaped corrugated aluminum alloy pipe replaces a metal composite band longitudinal wrapping structure in the prior art, the problems that a longitudinal wrapping metal composite band is low instructural strength and prone to warping are solved, and the biting-resistant strength of the optical cable is improved.

Description

technical field [0001] The invention belongs to the technical field of optical cables, and in particular relates to a central tube type optical cable with high fire resistance and rat bite prevention. Background technique [0002] At present, overhead optical cables in the field are easily bitten by squirrels, causing irreversible damage to the optical cables, and may also be subject to natural disasters such as fires. In the existing optical cable structure, in order to improve the tear resistance of the cable, a metal composite tape layer is usually provided, usually a steel-plastic composite tape or an aluminum-plastic composite tape. It is wound outside the optical fiber, so the overall structural strength of the optical cable is reduced. At the same time, the metal composite tape is easy to warp during the longitudinal wrapping process, resulting in unstable structure and easy to be bitten by squirrels. Contents of the invention [0003] The object of the present inv...

Claims

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Application Information

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IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4435G02B6/4436
Inventor 沈小平刘玉琴石东星
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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