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Multi-core fire-resistant power cable

A power cable and fire-resistant technology, which is applied in the direction of power cables, power cables with shielding layers/conductive layers, insulated cables, etc., can solve the problems of single protective layer, poor corrosion resistance, and poor anti-interference performance, and achieve strong waterproof performance. High protection and anti-aging effect

Active Publication Date: 2017-02-15
中山市炜丰电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its simple structure, single protective layer, and poor anti-interference of the materials used, traditional power cables have poor corrosion resistance, are easy to wear and age, and if they are not found in time after damage, there is a great potential safety hazard

Method used

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  • Multi-core fire-resistant power cable
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: see figure 1 , a multi-core fire-resistant power cable according to the present invention, comprising a wire core, a filling layer 3, an outer shielding layer 4, an insulating layer 5 and a protective layer, the filling layer 3 wraps the wire core, and the outer shielding layer Layer 4 covers the filling layer 3, the insulating layer 5 covers the outer shielding layer 4, and the protective layer is a multi-layer structure, including a waterproof longitudinal water-blocking buffer layer 6, a fire-resistant first protective layer layer 7 and a corrosion-resistant second protective layer 8, the longitudinal water-blocking buffer layer 6 wraps the insulating layer 5, the first protective layer 7 wraps the longitudinal water-blocking buffer layer 6, the The second protective layer 8 covers the first protective layer 7; the longitudinal water-blocking buffer layer 6 includes a layer of gold cloth and a layer of water-blocking tape covered with gold cloth.

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Embodiment 2

[0038] Embodiment 2: The structure of this embodiment is the same as that of Embodiment 1, and will not be repeated. The difference is that the first protective layer 7 is made of the following raw materials in parts by mass: 80 parts of acrylate rubber, 10 parts of silicone , 26 parts of polyurethane rubber, 8 parts of maleic anhydride grafted polyethylene, 60 parts of polyphenylene ether, 7 parts of microcrystalline paraffin, 11 parts of cumene diphenyl phosphate, 5 parts of naphthenic oil, 2 parts of calcium stearate 3 parts of zinc laurate, 1 part of lead dibasic phosphite, 12 parts of plasticizer WB350, 14 parts of magnesium hydroxide, 9 parts of antioxidant, 4 parts of silane coupling agent, 5 parts of accelerator CZ and zinc oxide 7 servings.

Embodiment 3

[0039] Embodiment 3: The structure of this embodiment is the same as that of Embodiment 1, and will not be repeated. The difference is that the first protective layer 7 is made of the following raw materials in parts by mass: 76 parts of acrylate rubber, 20 parts of silicone , 22 parts of polyurethane rubber, 10 parts of maleic anhydride grafted polyethylene, 80 parts of polyphenylene ether, 10 parts of microcrystalline paraffin, 14 parts of isopropylphenyl diphenyl phosphate, 7 parts of naphthenic oil, 4 parts of calcium stearate 4 parts of zinc laurate, 3 parts of lead dibasic phosphite, 8 parts of plasticizer WB350, 11 parts of magnesium hydroxide, 6 parts of antioxidant, 3 parts of silane coupling agent, 2 parts of accelerator CZ and zinc oxide 6 servings.

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Abstract

The invention relates to a multi-core fire-resistant power cable which comprises a wire core, a filling layer, an external shielding layer, an insulating layer, a longitudinal water resistant buffer layer, a first protective layer and a second protective layer which are arranged from inside to outside in turn. The wire core comprises multiple spirally wound leads and an internal shielding layer. The structure is reasonable, and two different materials of protective layers are adopted so that wear resistance can be enhanced, aging is not liable to occur and the safety is enhanced. The insulating layer is made of high-temperature-resistant crosslinked polyethylene so that the cable is not liable to be softened by high temperature, and breakdown of the cable caused by overload current can be prevented. Double shielding of the internal shielding layer and the external shielding layer is adopted so that the signal shielding effect can be enhanced, interference of signal transmission of other signal wires can be avoided, and the longitudinal water resistant buffer layer arranged outside the insulating layer has high water resistance. Besides, the leads are spirally wound so that the fracture resistance of the cable can be enhanced. The multi-core fire-resistant power cable has the advantages of high protective property, high temperature resistance, wear resistance and long service life and is particularly suitable for being popularized in the electric power industry.

Description

technical field [0001] The invention relates to the technical field of wires and cables, in particular to a fire-resistant power cable. Background technique [0002] The cable is extruded (winded) around the conductor with an insulating layer, such as an overhead insulated cable, or a few cores twisted (corresponding to the phase wire, neutral wire and ground wire of the power system), such as an overhead insulated cable with more than two cores, or an additional protective wire. Sheath, such as plastic / rubber sheathed wire and cable. Main technology has drawing, stranded, insulation extruded (wrapped), stranding, armouring, and sheath to extrude etc., and the different operation combinations of various products have certain difference. [0003] Thermal power generation is currently the most important form of power generation in China. Power cables play a pivotal role in the process of power transmission. High-quality cables can improve power utilization and reduce losses d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B3/44H01B7/18H01B7/22H01B7/28H01B7/282H01B7/29H01B9/00H01B9/02H01B13/02H01B13/10H01B13/24H01B13/26
CPCY02A30/14H01B9/006H01B3/441H01B7/1875H01B7/225H01B7/2806H01B7/2825H01B7/29H01B9/024H01B13/0271H01B13/10H01B13/245H01B13/262
Inventor 周文荣
Owner 中山市炜丰电器有限公司
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