Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Novel ceramic low-expansion isolation medium-voltage fire-resistant cable

A fire-resistant cable and low-expansion technology, which is applied in the direction of insulated cables, power cables with shielding layers/conductive layers, cables, etc., can solve the problems of dense smoke, heavy weight, and short fire-resistant time, so as to prevent flames from spreading. Unobstructed and stable effect

Pending Publication Date: 2019-06-04
四川鑫电电缆有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing fire-resistant cables all use copper core cables, which are heavy in weight. In addition, the sheath is made of polyvinyl chloride. When a fire occurs, the outer sheath will burn and produce dense smoke, and the fire-resistant time is short.

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
  • Novel ceramic low-expansion isolation medium-voltage fire-resistant cable
  • Novel ceramic low-expansion isolation medium-voltage fire-resistant cable
  • Novel ceramic low-expansion isolation medium-voltage fire-resistant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Please refer to Figure 1 to Figure 2 As shown, this embodiment provides a new ceramic low-expansion isolated medium-voltage fire-resistant cable, including a cable core 1 and a heat-insulating fire-resistant layer 2. The heat-insulating fire-resistant layer 2 includes an oxygen barrier layer 201, The refractory layer 202 and the outer sheath 203, the oxygen barrier layer 201, the refractory layer 202, and the outer sheath 203 are sequentially wrapped on the outside of the cable core 1, and the cable core 1 includes a conductor 101 and a conductor shielding layer 102 from the inside to the outside. , an insulating layer 103, an insulating shielding layer 104, a first buffer layer 105, a metal shielding layer 106, a second buffer layer 107 and a longitudinal cladding argon arc welding aluminum sheath layer 108, the first buffer layer 105 and the second buffer layer 107 The material is semiconducting resistance water expansion belt.

[0034] Specifically: the conductor 1...

Embodiment 2

[0048] Please refer to figure 2 and image 3 As shown, this embodiment provides a new type of ceramic low-expansion isolated medium-voltage fire-resistant cable. Except for all the technical features in Embodiment 1, the difference lies in: several airtight seals are processed on the sheath layer 203. Inner cavity 3, the sealed inner cavity 3 is filled with fire extinguishing agent unit 4. The advantage of this design is that during the burning process of the cable, the fire extinguishing agent unit 4 in the sealed inner cavity 3 will be released after the sheath burns to realize fire extinguishing Features.

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of electrical cables, and discloses a novel ceramic low-expansion isolation medium-voltage fire-resistant cable. The cable comprises a cable core and a heat-insulating fire-resistant layer. The heat-insulating fire-resistant layer comprises an oxygen barrier layer, a fire-resistant layer and an outer sheath layer in turn from inside to outside. The oxygen barrier layer, the fire-resistant layer and the outer sheath layer coat the cable core in turn. The cable core comprises a conductor, a conductor shielding layer, an insulation layer, an insulationshielding layer, a first buffer layer, a metal shielding layer, a second buffer layer and a longitudinal wrapping argon arc welding aluminum sleeve layer in turn from inside to outside. The first buffer layer and the second buffer layer are made of semi-conductive water-resisting expansion belts. By using highly flame-retardant polyolefin as the oxygen barrier layer, ceramic polyolefin as the fire-resistant layer and low-expansion crusted polyolefin as the sheath layer, the cable has excellent heat insulation and fire resistance functions. By adding the longitudinal wrapping argon arc weldingaluminum sleeve layer, the conductor can be protected from external impact. The buffer layers can prevent the insulating material from burning and expanding at high temperature to destroy the heat-insulating fire-resistant layer and the internal cable core.

Description

technical field [0001] The invention belongs to the technical field of electrical cables, in particular to a novel ceramic low-expansion isolated medium-voltage fire-resistant cable. Background technique [0002] With the continuous progress and development of society and the improvement of people's living standards, people pay more and more attention to the safety of life. It is becoming more and more important and urgent. Based on the reports of major fires, the fires caused by the spontaneous combustion of wires and cables account for a large proportion, and the proportion of casualties caused by wires and cables also accounts for a large proportion. For example, shortly after the fire broke out, the power transmission of the wires and cables that were subjected to power transmission was interrupted, causing elevators and lighting to not work normally, causing people to panic and cause casualties. [0003] At present, fire-resistant cables are widely used, such as: TV st...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/18H01B7/288H01B7/29H01B7/295H01B9/02A62C3/16
Inventor 魏英毛传岚崔天峰李准覃泓铭李森余露汪潇潇
Owner 四川鑫电电缆有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com