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Optical cable laid in sewer line and laying method thereof

An optical cable and pipeline technology, which is applied to the optical cable laid in the sewer pipeline and the laying field thereof, can solve the problems of complex installation structure, troublesome construction and laying, increased cost of laying optical cables, etc. Effects of Communication Transmission Characteristics

Active Publication Date: 2004-11-03
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The laying method of the suspension wire and HDPE protective tube is not only complicated in installation structure, but also very troublesome in construction and laying, which increases the cost of laying optical cables accordingly.

Method used

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  • Optical cable laid in sewer line and laying method thereof
  • Optical cable laid in sewer line and laying method thereof
  • Optical cable laid in sewer line and laying method thereof

Examples

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Embodiment Construction

[0022] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] The structure of the first embodiment of the optical cable of the present invention is as follows: figure 1 As shown, the optical fiber 1 is set in the loose tube 3 and filled with water-blocking fiber paste 2, and multiple loose tubes are twisted around the periphery of the central strength member 5. When the number of loose tubes is insufficient, the corresponding filling rope 4 can be used Instead, the stranded loose tubes are filled with cable paste 6, and the outside is wrapped with cable ties 7 to form a layer-stranded optical cable core, and a metal strip 8 is wrapped around the core, and the metal strip can be an aluminum strip or a steel strip , wrap along the longitudinal direction, wrap the inner sheath 9 outside the metal strip, and set the fiber reinforcement 10 on the periphery of the inner sheath. The fiber reinforcement is made of ...

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Abstract

The optical cable includes cable core, metal belt coating the cable core, inner sheath outside the metal belt, reinforcing fiber part outside the inner sheath and outer sheath outside the reinforcing fiber part. The optical cable has very high tensile strength for direct hanging inside sewer without needing other support, has two layers of sheath and added ratproof and ant resisting additive resulting in raised performance of resisting corrosion, moisture, rat and ant for use in harsh environment, and has simple installation structure and thus lowered laying cost.

Description

technical field [0001] The invention relates to a communication optical cable suitable for laying in sewer pipes and a laying method thereof. Background technique [0002] With the rapid development of metropolitan area network and access network in optical fiber communication transmission, the amount of optical cable laying is increasing year by year. Due to the massive laying of optical cables, the pipe hole resources reserved in cities, especially in old urban areas, are becoming more and more tense. Re-excavating buried pipelines will greatly increase the cost of laying optical cables. Making full use of the widely distributed sewer pipes in the city is an ideal solution to reduce the cost of laying optical cables. However, due to the harsh environmental conditions and the need to hang and lay optical cables in the sewer pipes, higher requirements are put forward for the waterproof, corrosion resistance and strength performance of the optical cables, and various optica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/50
Inventor 李龙勤万冰刘爱华熊壮许征罗中平骆军王翔
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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