Environment-friendly mid-voltage fire resistant cable

A kind of fire-resistant cable, environment-friendly technology, applied in the direction of power cables with shielding layer/conductive layer, etc., can solve the problem of difficult performance uniformity and stability control of ceramic silicone rubber materials, insufficient protection of internal insulating cores, Complicated production process and other issues, to achieve the effects of good air permeability, protection from damage, and excellent economic performance

Inactive Publication Date: 2012-07-11
JIANGSU CHANGFENG CABLE
View PDF8 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Most of the medium-voltage fire-resistant cables described in the above three patents use a fire-resistant protective layer of ceramic silicone rubber. In the case of aerobic combustion, the fire-resistant protective laye

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
  • Environment-friendly mid-voltage fire resistant cable
  • Environment-friendly mid-voltage fire resistant cable
  • Environment-friendly mid-voltage fire resistant cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, an environment-friendly medium-voltage fire-resistant cable according to the present invention has an aluminum alloy conductor 1 in the middle, and a conductor shielding layer 2, a cross-linked poly Vinyl insulating layer 3, insulating shielding layer 4, metal shielding layer 5 is arranged outside the insulating shielding layer 4; aluminum alloy conductor 1, conductor shielding 2, insulating layer 3, insulating shielding layer 4 and metal shielding layer 5 constitute an insulating wire core; The wire core is wrapped with a layer of inorganic heat insulation layer 7, and the heat insulation layer 7 is extruded with a low-smoke halogen-free flame-retardant polyolefin inner sheath 8, and the inner sheath 8 is wrapped with an inorganic fiber layer 9; the heat insulation layer 7. The inner protective layer 8 and the inorganic fiber layer 9 constitute a composite fire-resistant and heat-insulating layer; the composite fire-resistant and heat-insulat...

Embodiment 2

[0034] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that: one insulated wire core is changed to three, and the three insulated wires are twisted into a cable core, and filling material 6 is provided in the gap and surface of the cable core.

[0035] A composite fire-resistant and heat-insulating layer composed of an outer sheath layer 11, copper strips, copper alloy strips, galvanized steel strips or stainless steel strips. Under the combined action, the fire resistance and flame retardancy of medium voltage cables can meet the requirements of Class A fire resistance and Class A flame retardancy. When burning, they have low smoke, non-toxicity and excellent environmental protection performance.

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

The invention discloses an environment-friendly mid-voltage fire resistant cable, which comprises an aluminum alloy conductor arranged in the middle of the cable, wherein a conductor shielding layer, a cross-linked polyethylene insulation layer and an insulation shielding layer are sequentially extruded on the aluminum alloy conductor in a three-layer co-extruding manner; a metal shielding layer is arranged outside the insulation shielding layer; an insulation wire core consists of the aluminum alloy conductor, the conductor shielding layer, an insulation layer, the insulation shielding layer and the metal shielding layer; the metal shielding layer, a composite fire resistant heat insulation layer, a metal belt interlocked armored fireproof layer and an outer sheath layer are sequentially arranged outside the insulation shielding layer; three insulation wire cores and a filling material are stranded to form a cable core; and the composite fire resistant heat insulation layer consists of an inorganic heat insulation layer wrapped outside the cable core, a low-smoke halogen-free antiflaming polyolefin inner protection layer extruded outside the heat insulation layer and an inorganic fiber layer wrapped outside the inner protection layer. The environment-friendly mid-voltage fire resistant cable is a fire resistant aluminum alloy conductor mid-voltage cable which is low in cost, has high bendability, high fire resistance and high antiflaming performance, and is energy-saving and environment-friendly during manufacturing.

Description

technical field [0001] The invention relates to the technical field of power cables, in particular to a fire-resistant medium-voltage cable using a new type of aluminum alloy material and structure. Background technique [0002] With the rapid development of my country's economy, the voltage of the power supply system in the city is gradually increasing. At present, there are more and more high-rise and super-large buildings in domestic cities. If these buildings still use 0.6 / 1kV low-voltage power distribution, the supporting cables, installation and laying workload, and cable laying space will be huge. Too many and too large cables laid in the building will also affect the operation of the line and bring about major safety problems. In order to solve the practical power supply problems of high-rise and super-large buildings, many have begun to use medium voltage (6-35kV) power supply. For buildings, fire safety is the most important, the most concerned and the most impor...

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): H01B9/02
Inventor 王义林王勤仙徐振铎林爱华
Owner JIANGSU CHANGFENG CABLE
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