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A kind of high compression power cable and its preparation and application

A technology for power cables and cable cores, which is used in cable/conductor manufacturing, power cables with shielding/conducting layers, insulated cables, etc. and other problems, to achieve the effect of improving protection, excellent buffer insulation, and improving pressure resistance

Active Publication Date: 2020-08-25
宝胜(宁夏)线缆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This kind of peripheral protective sleeve is the method used by most cable protection at present, but the material of the cable will harden after the protective sleeve is installed, which will affect the laying of the finished cable
Conversely, if a rigid protective sheath is not used, the cable will often be trampled or squeezed during construction or subsequent use. If it is light, it will be trampled or crushed, and if it is heavy, it may cause The wire core inside is broken, which will make the circuit unable to work normally

Method used

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  • A kind of high compression power cable and its preparation and application
  • A kind of high compression power cable and its preparation and application
  • A kind of high compression power cable and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high-pressure-resistant power cable, including a cable core 1, an insulating layer 2, a pressure-resistant transition layer 3, a shielding layer 4, and a protective pressure-resistant sleeve 5, which are sheathed in sequence from the inside to the outside, wherein,

[0032] The pressure-resistant transition layer 3 includes an annular transition sleeve 31 and an annular array of arc-shaped support members 32 arranged between the annular transition sleeve 31 and the insulating layer 2. The outer arc surface of the arc-shaped support member 32 is tangent to the outer circular side of the insulating layer 2. , The cavity formed between the inner arc surface of the arc-shaped support member 32 and the inner wall of the annular transition sleeve 31 is filled with a compression buffer material 33; the protective anti-compression sleeve 5 is made of plastic alloy containing a compression-resistant reinforced skeleton.

[0033] The arc-shaped support 32 includes large arc-shap...

Embodiment 2

[0035] Based on the improved structure of the power cable proposed in Embodiment 1, the structural materials selected are as follows:

[0036] The cable core is made of copper alloy cable or aluminum alloy cable; the insulating layer is made of fluorosilicone rubber doped with highly porous modified ore filler; in the compression transition layer, the curved support is made of plastic alloy with a compression reinforced skeleton, and the annular transition sleeve The tube is made of HDPE / PET composite material containing modified silicone oil coated glass fiber; the shielding layer is made of graphite fiber with metal plating on the surface; the protective anti-compression sleeve is made of plastic alloy with anti-compression reinforced skeleton.

[0037] And taking the diameter and thickness of the cable core as the measurement basis, the thicknesses of the insulation layer, compression transition layer, shielding layer, and protective compression sleeve are 1.5-3%, 7-15%, 0.5...

Embodiment 3

[0039] Based on the functional material proposed in Example 2, the specific components are as follows:

[0040] The high-porosity modified ore filler in the insulating layer is selected from fibrous and layered ore compositions, such as bentonite, zeolite, sepiolite, basalt, etc., and its specific surface area is required to be greater than 150m 2 / g, the doping amount is 7-12wt% of the fluorosilicone rubber.

[0041]The plastic alloy with compression-resistant reinforced skeleton is made of fluorine-containing PE as the plastic alloy matrix and carbon fiber / glass fiber composite fiber doped with nano oxides as the reinforced skeleton. The content of the reinforced skeleton accounts for 6-9% of the weight of the alloy matrix; The oxide is a composition of nano-titanium dioxide and nano-silicon dioxide or nano-magnesia, wherein the content of nano-titanium dioxide is not less than 60wt%, and the doping amount of nano-oxide is 8-10wt% of the mass of carbon fiber / glass fiber comp...

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Abstract

The invention proposes a high-pressure-resistant power cable which comprises a cable core, an insulation layer, a pressure-resistant transition layer, a shield layer and a protective pressure-resistant sleeve, wherein the cable core, the insulation layer, the pressure-resistant transition layer, the shield layer and the protective pressure-resistant sleeve are sequentially sleeved from the insideto the outside. The pressure-resistant transition layer comprises an annular transition sleeving and arc-shaped supporting pieces which are arranged between the annular transition sleeving and the insulation layer in an annular array. The outer arc surface of each arc-shaped support piece is tangent to the excircle side of the insulation layer. A pressure-resistant buffer material is filled in a cavity formed between the inner arc surface of each arc-shaped support piece and the inner wall of the annular transition sleeving. The protective pressure-resistant sleeve adopts plastic alloy containing a pressure-resistant reinforced skeleton. According to the invention, through double-effect improvement and optimization of the cable structure and material, the mechanical properties of the cableare greatly improved; the pressure-resistant toughness is significantly improved; the cable has excellent buffer insulativity; and the effective service life of the cable is extended by more than 2 times.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a high-pressure-resistant power cable and its preparation and application. Background technique [0002] The wire and cable industry is an important supporting industry for my country's economic construction and is widely used in various fields of the national economy. Wire and cable are indispensable basic equipment for transmitting electric energy, transmitting information and manufacturing various motors, electrical appliances, instruments, automobiles, machine tools and other equipment. With the rapid growth of China's economy and the further acceleration of industrialization and urbanization, my country's wire and cable industry has developed rapidly. It is the second largest industry in China after the automobile industry and occupies an important position in the national economy. In recent years, the continuous and rapid development of my country's economy, the advan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B9/02H01B7/18H01B7/17H01B7/02H01B7/29H01B3/28H01B13/00H01B13/02H01B13/14H01B13/26H01B13/22
CPCH01B3/28H01B7/02H01B7/17H01B7/1805H01B7/183H01B7/1875H01B7/1895H01B7/292H01B9/02H01B13/0006H01B13/0016H01B13/02H01B13/148H01B13/22H01B13/26
Inventor 曾智
Owner 宝胜(宁夏)线缆科技有限公司