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Inflatable cable and preparation method for the same

An inflatable, cable technology, used in cable/conductor manufacturing, insulated cables, cables, etc., can solve problems such as poor burst resistance, poor softness, physical and mechanical properties, tensile strength and elongation. The effect of good integrity, good softness and anti-cracking performance, and a wide range of applications

Inactive Publication Date: 2018-02-23
天津金山电线电缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing traditional cables cannot meet the actual production needs, and there are a series of problems such as poor flexibility, poor burst resistance, poor physical and mechanical properties, tensile strength and elongation.

Method used

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  • Inflatable cable and preparation method for the same

Examples

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Effect test

Embodiment 1

[0032] An inflatable cable, including an inflatable tube 3, a control wire core, a filling rod and a sheath layer 4; the inflatable tube 3 is located at the center, and an insulated core is arranged on the outside of the inflatable tube 3, and the control core is insulated by a conductor 2 and extruded Layer 5, the conductor 2 is a copper wire twisted structure, the outside of the control core and the outer diameter and roundness of the cable are wrapped with tissue paper, and the outer sheath layer 4 is extruded. The outer side is extruded with a sheath layer 4 .

[0033] The insulating layer is made of cross-linked polyethylene insulating material with a temperature resistance grade of -40°C to 105°C, and the sheath layer is made of polyolefin elastomer material.

Embodiment 2

[0035] A method for preparing an inflatable cable, the preparation process comprising the following steps:

[0036] 1. Conductor stranding: the conductor is made of soft copper conductor, and the stranding pitch ratio is 11-14;

[0037] 2. Extruded insulating layer: the insulating layer is produced by extruding irradiated cross-linked polyethylene material with a temperature grade of -40°C to 105°C; the thickness of the insulating layer of the control wire core is 0.4mm-0.6mm;

[0038] 3. Cable forming: use a cable forming machine to form cables, so that the inflatable tube is located in the middle, and an elastomer filling rod is arranged between the control wire cores, which are arranged and covered on the outside of the inflatable tube to ensure the roundness of the cable. The diameter ratio is 14-16 times;

[0039] 4. Wrapping isolation layer: The isolation layer is formed by overlapping wrapping with tissue paper, and the wrapping coverage rate is greater than 30%;

[0...

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Abstract

The invention relates to an inflatable cable and a preparation method for the same, relating to the cable technology field. The inflatable cable comprises an air inflation tube, a control wire core and a sheath layer. The air inflation tube is arranged in a center position. An insulation wire core is arranged on the outer side of the air inflation tube. The control wire core consists of conductorsand extrusion insulation layers. The conductor is a structure formed by intertwisting red copper filaments and the sheath layer is arranged on the outer side of the control wire core. The preparationmethod for the inflatable cable comprises steps of 1) intertwisting the conductors, 2) extruding an insulation layer, 3) forming a cable, 4) wrapping to form an insulation layer and 5) extruding thesheath layer. The conductor is obtained by intertwisting a soft copper conductor. An irradiation crosslinking polyethylene material with a temperature grade of 40 DEG-150 DEG is adopted to produce theinsulation layer by extrusion. The cable forming is proceeded by a cable former. The insulation layer is formed by using cotton paper to perform overlapped wrapping. The sheath layer is produced by extrusion of an irradiation polyolefin material with a temperature grade being 40 DEG-105DEG. The preparation method for the inflatable cable is simple in technology and the inflatable cable is good ina physical mechanical property, flexibility, anti-explosion, oil resistance, aging resistance and roundness.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to an inflatable cable and a preparation method thereof. Background technique [0002] At present, inflatable control cables are generally used on welding equipment and plasma cutting machines. One side of the cable is connected to a welding torch or plasma cutting torch, and the other side is connected to a power supply. In this way, the cable will be frequently dragged during use, so the cable is required to be able to At the same time, due to the requirements of the use environment, the cable should also be resistant to oil and aging. When the cable is in use, the inflatable tube should be inflated, and the air pressure is high. It is required that the inflatable tube has a certain strength and is burst-proof. In order to ensure the overall flexibility of the cable, the inflatable tube should also have a certain degree of softness. Reasonable match between softness and explosion-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/02H01B7/17H01B13/00
CPCH01B7/0072H01B7/0009H01B7/0275H01B7/17H01B13/00
Inventor 聂玉阳曾智民程俊龙李胜涛王永久
Owner 天津金山电线电缆股份有限公司
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