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Special cable for intelligent monitoring of rail transit and production process thereof

An intelligent monitoring and rail transit technology, applied in insulated cables, cable/conductor manufacturing, cables, etc., can solve the problems of small gaps in single-core cables, and achieve the effects of wide application range, increased buffering, and guaranteed semi-conductive performance

Pending Publication Date: 2021-01-15
FAR EAST CABLE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single-core cable has a small gap, how to implant the optical fiber into the cable and ensure that the optical fiber is not damaged has always been the main technical difficulty in this field.

Method used

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  • Special cable for intelligent monitoring of rail transit and production process thereof
  • Special cable for intelligent monitoring of rail transit and production process thereof
  • Special cable for intelligent monitoring of rail transit and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] See figure 1 , the special cable for intelligent monitoring of rail transit in this embodiment includes a cable core 1, a metal shielding layer 2, an inner sheath 3, a flame-retardant tape 4, a metal armor layer 5, and a wrapping tape 6 arranged in sequence from the inside to the outside. and outer sheath7. The inner sheath 3 is made of PE, which has a good insulation effect, and has a thickness of 2.0mm, and wraps the metal shielding layer 2 tightly. Flame-retardant tape 4 adopts low-smoke and halogen-free high flame-retardant tape (OI≥70). Tape 6 is made of glass fiber tape, which has the characteristics of high temperature resistance, thermal insulation, insulation, fire retardant, corrosion resistance, aging resistance, weather resistance, high strength, smooth appearance, etc., and further improves the overall performance of the cable. . The outer sheath 7 is made of low-smoke and zero-halogen or low-smoke and low-halogen materials.

[0049]The cable core 1 inc...

Embodiment 2

[0065] The special cable for intelligent monitoring of rail transit in this embodiment is basically the same as that of Embodiment 1, except that: the conductor layer 1-1 adopts a second-class non-tinned stranded conductor; the material of the insulation 1-3 is ethylene-propylene rubber EPR; detection optical fiber 2-1 adopts stainless steel armored multimode optical fiber unit; inner sheath 3 is made of low-smoke halogen-free flame-retardant polyolefin material to improve the flame retardancy of the cable; Copper wire, to meet different use requirements, a wide range of applications.

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Abstract

The invention discloses a special cable for intelligent monitoring of rail transit and a production process thereof. The structure of the cable comprises a cable core, a metal shielding layer, an inner sheath, a flame-retardant belt, a metal armor layer, a wrapping belt and an outer sheath which are sequentially arranged from the inside to the outside. The metal shielding layer comprises two layers of semi-conductive wrapping tapes, and detection optical fibers, shielding copper wires and semi-conductive fillers which are arranged between the semi-conductive wrapping tapes and are distributedcircumferentially; the detection optical fibers and the shielding copper wires are uniformly distributed along the periphery of the cable core. The semi-conductive fillers are distributed between theadjacent detection optical fibers and shielding copper wires and between the adjacent shielding copper wires; and the outer diameters of the shielding copper wires and the semi-conductive fillers aregreater than the outer diameter of the detection optical fibers. According to the invention, optical fibers implanted into the cable can be effectively prevented from being damaged, and the cost of the cable can be reduced.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a special cable for intelligent monitoring of rail transit and a production process thereof. Background technique [0002] Rail transit can effectively alleviate traffic pressure and environmental pollution, and can drive local economic development, so rail transit is the focus of future investment. The safety of rail transit lines has always been the focus of attention of operation and maintenance companies. Manual inspections are not only work-intensive, but also cannot be monitored in real time. Once an accident occurs, it will cause serious loss of personnel and property. [0003] Optical fiber has excellent anti-electromagnetic interference and low energy consumption. Through the displacement of light waves, it can realize the measurement of parameters such as local overheating, disturbance and partial discharge of cables. However, the single-core cable has a small gap, so h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/17H01B7/18H01B7/22H01B3/44H01B7/02H01B7/28H01B7/29H01B7/295H01B13/02H01B13/26G01D5/26
CPCH01B7/17H01B7/1895H01B7/1875H01B7/226H01B7/295H01B7/02H01B3/441H01B7/292H01B7/2806H01B7/28H01B13/0207H01B13/26G01D5/268
Inventor 陈涛徐静陈兴武张宇鸥谢志滨
Owner FAR EAST CABLE
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