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Flame-retardant 5G cable

A flame-retardant, 5G technology, applied in the direction of insulated cables, bendable cables, cables, etc., can solve the adverse effects of cable core heat dissipation, can not meet the 5G conduction and other problems, and achieve the effect of good heat dissipation and low thermal conductivity

Inactive Publication Date: 2020-09-25
ANHUI DUJIANG CABLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional flame-retardant cables are generally insulated by heat-insulating rubber and braided layers to prevent heat from adversely affecting the cable core, which cannot meet the needs of 5G conduction. However, the current flame-retardant improvements for cables can be achieved to a certain extent. Improve the heat insulation and flame retardant performance, but the application of related materials will have an adverse effect on the heat dissipation of the cable core

Method used

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  • Flame-retardant 5G cable
  • Flame-retardant 5G cable
  • Flame-retardant 5G cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 The shown flame-retardant 5G cable includes a cable core 2 and a functional layer wrapped on the outside of the cable core 2 and a sheath layer 6 wrapped on the outside of the functional layer; the functional layer includes an elastic spacer arranged on the outside of the cable core. The thermal layer 3 and the heat-shrinkable layer 4 arranged on the outer side of the elastic heat insulation layer 3, the functional layer is provided with at least two rows of heat dissipation holes 1 at equal intervals along its circumference, and the heat dissipation holes 1 are parallel to the length of the cable In the shape of a crack, the outer side of the cable core 2 is fixed with heat-expandable tires 9 corresponding to the number of rows of heat dissipation holes 1 at equal intervals along its circumference, and each heat-expandable tire 9 is in contact with two adjacent rows of heat dissipation holes 1 The heat-expandable tire 9 is fixed on the cable core 2 by a ...

Embodiment 2

[0043] The difference between this embodiment and Embodiment 1 is:

[0044] In this embodiment, as figure 1 As shown, the outer side of the heat-shrinkable layer 4 is coated with a water-blocking tape layer 7. The thermally expandable microspheres are made of high-temperature resistant foam materials, which will expand when heated, and have a very low heat transfer coefficient, which can meet the design requirements.

[0045] In this embodiment, as figure 1 As shown, two reinforcing layers 5 are provided between the functional layer and the sheath layer 6, and the reinforcing layer 5 is formed by alternately intermittently connecting a reinforcing ring body 51 and an elastic ring body 52, and one of the reinforcing layers The reinforcing ring body 51 of 5 is aligned with the elastic ring body 52 of another reinforcing layer 5. The reinforcement layer 5 formed by alternately and intermittently connecting the reinforcement ring body 51 and the elastic ring body 52 has certain streng...

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Abstract

The invention discloses a flame-retardant 5G cable, and belongs to the technical field of the cable. The cable comprises a cable core, a functional layer wrapping the outer side of the cable core, anda sheath layer wrapping the outer side of the functional layer. The cable is characterized in that the functional layer comprises an elastic thermal insulation layer arranged on the outer side of thecable core and a thermal shrinkage layer arranged on the outer side of the elastic thermal insulation layer. At least two rows of heat dissipation holes are formed in the functional layer at equal intervals along the periphery of the functional layer. The heat dissipation holes are in a crack shape parallel to the length direction of the cable. Thermal expansion tires in one-to-one correspondencewith the rows of the heat dissipation holes are fixed on the outer side of the cable core along the circumference of the cable core at equal intervals, and each thermal expansion tire abuts against the middle part of a part between two adjacent rows of heat dissipation holes in the elastic heat insulation layer, the thermal expansion tire is fixed on the cable core through a fixing groove body with a U-shaped cross section, and the opening side of the fixing groove body faces the fixing groove body. The flame-retardant cable has the flame-retardant function, and meanwhile heat dissipation ofthe cable core can be well achieved.

Description

Technical field [0001] The invention relates to the technical field of cables, in particular to a flame-retardant 5G cable. Background technique [0002] With the development of transmission technology, transmission technology has gradually entered the 5G era from the 4G era. In the transmission of electromagnetic waves, 5G requires a significant increase in transmission rate, bandwidth, and frequency. Therefore, accessories applied to 5G also need to make corresponding progress. To adapt to the spread. With the acceleration of my country's economic construction, medium-voltage distribution systems in important places such as high-rise buildings, subways, tunnels, power plants, and nuclear power plants have put forward higher requirements for the safety of power cables under fire conditions. It is imperative to use fire-resistant and flame-retardant cables for power supply. Fire-resistant and flame-retardant power cables must not only be flame-retardant and fire-resistant under ...

Claims

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Application Information

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IPC IPC(8): H01B7/42H01B7/29H01B7/295H01B7/18H01B7/04
CPCH01B7/04H01B7/1875H01B7/292H01B7/295H01B7/421
Inventor 巫春生徐志敏张家文毕亮亮胡宏生万长东
Owner ANHUI DUJIANG CABLE GROUP
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