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

Production method for conductors for fire-resistant middle-high voltage cables

A technology for medium and high voltage cables and a manufacturing method, which is applied in the manufacture of cables/conductors, insulation of conductors/cables, circuits, etc., can solve the problems of not being able to save time for rescue work, the structure is too simple, and the heat insulation effect is poor, and the mechanical strength is achieved. Good, good bending performance, rounded shape

Active Publication Date: 2013-02-20
SICHUAN MINGXING CABLE
View PDF9 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this patent are: the structure of the cable itself is too simple, the heat insulation effect is poor, the fire-resistant time is short, and the fire-resistant performance is also poor. Under the damage of the power system by sudden accidents such as fires and natural disasters, it cannot be used for power supply. Rescue efforts buy time

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
  • Production method for conductors for fire-resistant middle-high voltage cables
  • Production method for conductors for fire-resistant middle-high voltage cables
  • Production method for conductors for fire-resistant middle-high voltage cables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]A conductor manufacturing method for fire-resistant medium and high voltage cables, comprising the following steps: material selection → wire drawing → annealing → conductor stranding → co-extrusion and cladding of inner shielding layer, insulating layer and outer shielding layer → metal shielding layer setting → Extrusion of phase-separated refractory isolation layer → first tape layer wrapping → cable twisting and cabled tape layer wrapping → metal armor layer wrapping → second tape layer wrapping → outer sheath layer extrusion The step of extruding the phase-separated refractory isolation layer refers to extruding the vitrified silicone rubber material on the metal shielding layer with a silicone rubber extruder, with a thickness of 2.0 mm.

[0033] In the present invention, the conductor stranding step refers to stranding the multiple strands of tinned copper monofilaments formed after the wire drawing process into a conductor according to the stranding pitch being 10...

Embodiment 2

[0041] A conductor manufacturing method for fire-resistant medium and high voltage cables, comprising the following steps: material selection → wire drawing → annealing → conductor stranding → co-extrusion and cladding of inner shielding layer, insulating layer and outer shielding layer → metal shielding layer setting → Extrusion of phase-separated refractory isolation layer → first tape layer wrapping → cable twisting and cabled tape layer wrapping → metal armor layer wrapping → second tape layer wrapping → outer sheath layer extrusion →Performance inspection experiment→The finished product is packaged and stored in the warehouse. The step of extruding the phase-separated refractory isolation layer refers to extruding the vitrified silicone rubber material on the metal shielding layer with a silicone rubber extruder, and the extruded thickness is 3.0mm.

[0042] In the present invention, the conductor stranding step refers to stranding the multi-strand tinned copper monofilame...

Embodiment 3

[0052] A conductor manufacturing method for fire-resistant medium and high voltage cables, comprising the following steps: material selection → wire drawing → annealing → conductor stranding → co-extrusion and cladding of inner shielding layer, insulating layer and outer shielding layer → metal shielding layer setting → Extrusion of phase-separated refractory isolation layer → first tape layer wrapping → cable twisting and cabled tape layer wrapping → metal armor layer wrapping → second tape layer wrapping → outer sheath layer extrusion →Performance inspection experiment→The finished product is packaged into the warehouse. The step of extruding the phase-separated refractory isolation layer refers to extruding the vitrified silicone rubber material on the metal shielding layer with a silicone rubber extruder, with a thickness of 4.0mm.

[0053] In the present invention, the conductor stranding step refers to stranding the multi-strand tinned copper monofilaments formed after th...

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 discloses a production method for conductors for fire-resistant middle-high voltage cables. The method includes steps of material selection, wire drawing, annealing, conductor hinging, co-extrusion and coating of an inner shielding layer, an insulation layer and an outer shielding layer, setting of a metal shielding layer, extrusion of a phase-separation fire-resistant insulation layer, winding of a first wrapping tape layer, cabling twisting and winding of cabling belting layer, winding of a metal armored layer, winding of a second wrapping tape layer and an outer sheath layer extrusion, wherein during the extrusion of the phase-separation fire-resistant insulation layer, ceramic silicon rubber materials are extruded on the metal shielding layer through a silicon rubber extruder, and the extruding thickness is 2.0mm-4.0mm. According to the method, the phase-separation fire-resistant insulation layer is arranged, the silicon rubber extruder is used for extrusion of the ceramic silicon rubber materials, therefore the materials are provided with good thermal insulating effect, ceramic bodies are fired by flames at a high temperature and provided with a certain mechanical strength and good electrical insulation performance due to the fact that the major material is inorganic silicon, so that the fire-resistant performance of the cables can be improved.

Description

technical field [0001] The invention relates to the technical field of cable manufacturing, in particular to a conductor manufacturing method for fire-resistant medium and high voltage cables. Background technique [0002] Entering the 21st century, my country's infrastructure has entered a golden age of construction. Today, with the rapid expansion of population and urbanization, in order to save resources, urban construction has to develop towards clustering, scale and high-level development. In key national and civil projects such as stations, airports, subways, nuclear power plants, business hotels, hospitals, shopping malls, residential buildings, etc., in addition to considering their necessary functions and environmental comfort, safety is increasingly on the agenda , Shanghai "11.15" catastrophic fire accident has brought people a very profound warning. As a special cable, fire-resistant cables are used in occasions that require a high safety factor, and have been w...

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): H01B13/00H01B13/24H01B13/14H01B13/02H01B13/26
Inventor 宋强李广元沈卢东盛业武陈光高兰超王冰迪
Owner SICHUAN MINGXING CABLE
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