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Photoelectric composite railway digital signal cable

A digital signal cable, optoelectronic composite technology, used in communication cables, circuits, insulated cables, etc., can solve problems such as shortening cable service life, loss, fiber interruption, etc., to improve service life, ensure long-term safety, and save economical operating costs Effect

Active Publication Date: 2006-08-30
TONGDING INTERCONNECTION INFORMATION CO LTD
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AI Technical Summary

Problems solved by technology

[0002] In the prior art, the optoelectronic composite railway digital signal cable includes a cable core with a loose sleeve optical fiber unit and an inner shielded quadruple in the cable core. The optical fiber in the unit is prone to hydrogen loss when it is eroded by water and moisture, which affects the quality of optical signal transmission. In severe cases, the optical fiber will be interrupted, resulting in poor safety and reliability of railway digital communication and shortening the service life of the cable.

Method used

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  • Photoelectric composite railway digital signal cable
  • Photoelectric composite railway digital signal cable
  • Photoelectric composite railway digital signal cable

Examples

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Embodiment Construction

[0015] See attached figure 1 - attached image 3 As shown, a photoelectric composite railway digital signal cable includes a cable core, and the cable core includes multiple sets of signal lines, at least one set of the signal lines is an inner shielded quadruple group 7, and at least another set of signal lines The wires are loose-tube optical fiber units 9, and the gaps between the signal wires are filled with water-blocking ointment 8. The inner sheath layer 6, the outer water blocking tape 5, the aluminum sheath layer 4, the metal armor layer 2, and the outer sheath layer 1 are sequentially wrapped on the outer side of the cable core, and the outer sheath layer 1 and the metal The armor layer 2 is hermetically bonded by extrusion molding. The outer water-blocking belt 5 is made of water-soluble swelling material, and the inside of the inner sheath layer 6 is provided with an inner water-blocking belt 10, and the inner water-blocking belt 10 is also made of water-soluble ...

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Abstract

The invention is a photoelectric compound railway digital signal cable, comprising a cable core, which comprises plural groups of signal lines, where at least a group of signal lines is an inner-screened four-line group and at least another group of signal lines is a group of loose tube optical-fibers, gaps between signal lines are filled with water stop ointment, the cable core is coated in order with inner jacket layer, outer water stop belt, aluminum jacket layer, metallic armouring layer, and outer jacket layer, the outer water stop belt is made from water soluble expansive material, and water stop glue is filled between the metallic armouring layer and aluminum jacket layer. And it can ensure long-term safety and reliability of railway digital communication and be maintained without aeration, largely saving the operating cost.

Description

technical field [0001] The invention relates to a photoelectric composite railway digital signal cable. Background technique [0002] In the prior art, the optoelectronic composite railway digital signal cable includes a cable core with a loose sleeve optical fiber unit and an inner shielded quadruple in the cable core. The optical fiber in the unit is prone to hydrogen loss when it is eroded by water and moisture, which affects the quality of optical signal transmission. In severe cases, the optical fiber will be interrupted, resulting in poor safety and reliability of railway digital communication and shortening the service life of the cable. Contents of the invention [0003] The object of the present invention is to provide a photoelectric composite railway digital signal cable, which can prevent water and moisture from entering the cable core. [0004] The technical solution of the present invention is: a photoelectric ...

Claims

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Application Information

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IPC IPC(8): H01B11/22H01B7/282H01B7/288H01B7/17
Inventor 应志忠江红芬孙勤良许永平
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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