Special electric cables and their pretective covering materials in environment with strong lightings, strong ultraviolet radiation, large temperature differential and cold

A special cable and strong ultraviolet technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of rapid aging, large construction traction force, poor low temperature performance of plastic materials, etc., and achieve enhanced electromagnetic shielding performance and lightning resistance performance , The effect of improving the dielectric strength

Inactive Publication Date: 2005-02-23
TBEA DEYANG CABLE CO LTD
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The climate of the Qinghai-Tibet Plateau is characterized by high cold (minimum temperature below -50°C), large temperature difference between day and night, strong ultraviolet radiation, and strong and frequent lightning in some areas. At present, the existing cables at home and abroad cannot adapt to such a harsh environment. The main reasons are: 1. Plastic materials such as the insulation layer and sheath of the cable have poor low-temperature performance, and are easily broken when used in high-cold regions; 2. Under the environmental conditions of large temperature difference and frequent high and low temperatures, plastic materials suffer from severe thermal fatigue , aging quickly; 3. Plastic materials are prone to aging and failure under strong ultraviolet radiation; especially the

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Special electric cables and their pretective covering materials in environment with strong lightings, strong ultraviolet radiation, large temperature differential and cold
  • Special electric cables and their pretective covering materials in environment with strong lightings, strong ultraviolet radiation, large temperature differential and cold
  • Special electric cables and their pretective covering materials in environment with strong lightings, strong ultraviolet radiation, large temperature differential and cold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 Preparation of black cable plastic

[0044] Take 70 parts of black polyvinyl chloride cable material as the main material, 30 parts of vulcanized nitrile rubber powder as plasticizer, and 2 parts of carbon black as light stabilizer, put them in the reactor, and mix them evenly at 160-180 °C , to prepare a nitrile compound modified polyvinyl chloride black cable plastic containing a light stabilizer.

Embodiment 2

[0045] Example 2 Preparation of red cable plastic

[0046] Take 70 parts of red polyvinyl chloride cable material as the main material, 30 parts of vulcanized nitrile rubber powder as plasticizer, and 0.2 part of UV-531 ultraviolet absorber as light stabilizer. Mix evenly at high temperature to prepare nitrile compound modified polyvinyl chloride cable plastic containing light stabilizer.

Embodiment 3

[0047] Example 3 Preparation of blue cable plastic

[0048] Take 70 parts of blue polyvinyl chloride cable material as the main material, 30 parts of vulcanized nitrile rubber powder as plasticizer, and 0.3 part of UV-9 ultraviolet absorber as light stabilizer. Mix evenly at a temperature of ℃ to prepare a nitrile compound modified polyvinyl chloride cable plastic containing a light stabilizer.

[0049] --The structure of the cable

[0050] Embodiment 1 Two-core circular conductor 0.6 / 1kv cable

[0051]Referring to Fig. 1: a two-core round conductor cable is composed of a cable core 1 with two round conductors, a cushion layer 2, a steel wire armor layer 3, a reinforcement layer 4 and a sheath 5, and the sheath 5 is implemented by the above-mentioned embodiment 1 or Example 2 or Example 3 Extruded from a nitrile compound modified polyvinyl chloride material containing a light stabilizer, its thickness is 10-20% larger than the sheath thickness of cables of the same specifica...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

In this invention, the material of the jacket illustrated, which is used for protecting the cable of special-purpose in the environments of high cold, strong ultraviolet, and strong thunderstorm. The material contains (weight portion) the polyvinyl chloride, 65-75, the sulphation butyronitrile rubber 25-35, the light stabilizer 0.1-3. The thickness of the jacket is greater than that of the standard about 20%. The armor layer applies the rough gauge wire with copper wire, which is suitable in applying in the plateau.

Description

technical field [0001] The invention relates to a cable, specifically, a special cable for high cold, large temperature difference, strong ultraviolet light and strong lightning environment and its sheath material. Background technique [0002] With the rapid development of our country's economy, the Qinghai-Tibet Railway, which has attracted worldwide attention, has started construction. The special geographical and climatic conditions of the Qinghai-Tibet Plateau have brought many difficulties to the project. It is urgent to research new technologies and develop new products. The cables needed for the Qinghai-Tibet Railway are among them. one. [0003] The climate of the Qinghai-Tibet Plateau is characterized by high cold (minimum temperature below -50°C), large temperature difference between day and night, strong ultraviolet radiation, and strong and frequent lightning in some areas. At present, the existing cables at home and abroad cannot adapt to such a harsh environme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01B3/44H01B7/17
Inventor 周厚强曾凡令翟旭亚
Owner TBEA DEYANG CABLE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap