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Fire-resistant cable

A fire-resistant cable and cable core technology, which is applied in the direction of insulated cables, power cables, cables, etc., can solve the problems of gray matter and failure to prevent cable damage, so as to improve fire resistance, improve continuous power supply capacity, and prolong continuous power supply time. Effect

Inactive Publication Date: 2014-04-30
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the fire-resistant cable using the above-mentioned cable filling rope will become ash when encountering fire ablation, and the filling rope can only play a filling role, and cannot prevent further damage to the cable by the flame

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] see figure 1 , which discloses Embodiment 1 of the fire-resistant cable of the present invention, including several cable cores 10 . A filling layer 20 is arranged between the cable cores 10 , and a sheath 30 is added, and an inner sheath 40 , a braided layer 50 and an outer sheath 60 are sequentially arranged outside the sheath 30 . The filling layer 20 is filled with an inorganic heat-absorbing material 21, which is an inorganic material capable of absorbing heat and releasing water vapor when heated.

[0021] The specific structure of the cable core 10 varies with the requirements of low-voltage, medium-voltage, high-voltage, and extra-high-voltage cables. For example, the cable core 10 may include a conductor and an insulating layer outside the conductor, or the cable core 10 may include a conductor and cover the conductor from the inside to the outside. The inner shield, insulating layer, outer shield and copper tape shield, or the cable core 1 includes the conduc...

Embodiment 2

[0029] see figure 2 , which discloses Embodiment 2 of the fire-resistant cable of the present invention. This embodiment is similar to Embodiment 1, the difference being that: the sheath 30 is provided with an outer sheath 60 .

Embodiment 3

[0031] see image 3 , which discloses Embodiment 2 of the fire-resistant cable of the present invention. This embodiment is similar to Embodiment 1, and the difference is that an inorganic heat-absorbing material 31 is arranged between the sheath 30 and the inner sheath 40, and the inorganic heat-absorbing material 31 and the The inorganic endothermic materials in Example 1 are the same.

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PUM

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Abstract

The invention discloses a fire-resistant cable. The fire-resistant cable comprises a plurality of cable cores, wherein a packing layer is arranged between the cable cores, and a protection layer is arranged outside the cable cores. The packing layer is filled with inorganic heat absorption materials which can absorb heat and release water vapor when heated. The inorganic heat absorption materials of the fire-resistant cable can release water vapor when heated to a certain degree and can absorb heat while releasing water vapor, the heat absorption process can play a role in cooling, heat can be unceasingly taken away along with water vapor volatilization, and therefore the temperature of the cable can be lowered, the fire resistance of the cable can be improved, the capacity of unceasingly supplying power in a fire disaster is improved for the cable, and the unceasing power supply time of the cable in the fire disaster is prolonged.

Description

technical field [0001] The invention relates to a cable, in particular to a fire-resistant cable. Background technique [0002] With the continuous progress of social development, people's requirements for safety protection continue to increase. In the field of fire-resistant cables, people have higher and higher requirements for the continuous power supply capability of fire-resistant power cables in fires. The insulation performance of fire-resistant power cables has an important impact on their continuous power supply capabilities in fires. [0003] At present, the cable body of the cable filling rope of the fire-resistant cable is polyethylene foam or is composed of polyethylene foam and an outer sheath. [0004] However, the fire-resistant cable using the above-mentioned cable filling rope will become ash when it encounters fire ablation, and the filling rope can only play a filling role, and cannot prevent further damage to the cable by the flame. Contents of the i...

Claims

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Application Information

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IPC IPC(8): H01B7/29H01B9/00H01B9/02
Inventor 张增果周和平
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL