Composite waterproof cable and preparation method thereof

A waterproof cable and cable technology, which is applied in the direction of cable/conductor manufacturing, insulated cables, cables, etc., can solve the problems of water and water vapor infiltrating into the conductor, and achieve excellent electrical and mechanical properties, high elongation of single wire, and ductility strong effect

Inactive Publication Date: 2016-07-27
SHENZHEN LIANJIAXIANG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method has the problem that water and water vapor easily penetrate into the inside of the conductor through the conductor gap

Method used

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  • Composite waterproof cable and preparation method thereof
  • Composite waterproof cable and preparation method thereof

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preparation example Construction

[0045] The present application also provides a method for preparing a composite waterproof cable. Since the process control conditions in the preparation process of the composite waterproof cable are prior art, details will not be repeated here. Wherein, the preparation method comprises the following steps:

[0046] S1. Preparing the conductor group: After twisting the copper wire 8 and the water-blocking wire 9, the conductor group 7 is obtained.

[0047] Specifically, the preparation of the copper wire 8 includes three sub-steps: material selection, wire drawing and stranding. Material selection: Select the conductor material used according to the requirements of preparing different cables, such as choosing an electrical round copper rod as the conductor material; wire drawing: draw and anneal the conductor material to obtain annealed oxygen-free copper wire, the diameter of the annealed oxygen-free copper wire 0.15mm; Stranding: The annealed oxygen-free copper wire and wat...

Embodiment 1

[0052] S1. Preparing the conductor group: After twisting the copper wire 8 and the water-blocking wire 9, the conductor group 7 is obtained.

[0053] S2. Extruding the insulating layer: extruding the insulating layer 6 outside the conductor group 7 with an extrusion die to obtain the insulating core wire 5, and the insulating layer 6 is polyvinyl chloride insulating material.

[0054] S3. Wrapping isolation layer: Twisting a plurality of insulating core wires 5, and filling water-blocking ropes in the twisted gaps of the plurality of insulating core wires 5 to obtain the inner core 3 of the cable, and covering the isolation layer 2 evenly on the Outside the inner core 3 of the cable, the isolation layer 2 is formed by wrapping aluminum-plastic composite tape.

[0055] S4. Extruded sheath layer: the sheath layer 1 made of halogen-free low-smoke flame-retardant polyolefin composite material is evenly coated on the outside of the isolation layer 2 by extrusion.

[0056] Among th...

Embodiment 2

[0058] S1. Preparing the conductor group: After twisting the copper wire 8 and the water-blocking wire 9, the conductor group 7 is obtained.

[0059] S2. Extruding the insulating layer: extruding the insulating layer 6 outside the conductor group 7 with an extrusion die to obtain the insulating core wire 5, and the insulating layer 6 is polyvinyl chloride insulating material.

[0060] S3. Wrapping isolation layer: Twisting a plurality of insulating core wires 5, and filling water-blocking ropes in the twisted gaps of the plurality of insulating core wires 5 to obtain the inner core 3 of the cable, and covering the isolation layer 2 evenly on the Outside the inner core 3 of the cable, the isolation layer 2 is formed by wrapping aluminum-plastic composite tape.

[0061] S4. Extruded sheath layer: the sheath layer 1 made of halogen-free low-smoke flame-retardant polyolefin composite material is evenly coated on the outside of the isolation layer 2 by extrusion.

[0062] Among th...

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Abstract

The invention discloses a composite waterproof cable and a preparation method thereof. The composite waterproof cable comprises a cable inner core, an isolation layer and a sheath layer, wherein the isolation layer and the sheath layer successively cover the cable inner core from the inside out. The cable inner core is formed by twisting a number of insulation core wires. Water blocking filling layers are arranged in twisting voids of a number of insulation core wires. Each insulation core wires comprises a conductor group and an insulation layer which covers the conductor group. Each conductor group is formed by tow-twisting a number of copper wires and a number of water blocking wires, wherein the filament diameter of each water blocking wire before water swelling is less than or equal to the filament diameter of each copper wire, and the filament diameter of each copper wire is less than 0.2mm. According to the invention, water blocking ropes are arranged in twisting voids of a number of insulation core wires; the water blocking ropes can block radial seepage of the cable and can absorb vertical seepage of the cable; and radial and longitudinal full range stereo waterproof effect of the cable is realized.

Description

technical field [0001] The invention relates to the technical field of power cables, and more specifically, to a composite waterproof cable and a preparation method thereof. Background technique [0002] With the needs of social development, the use occasions of mechanical equipment products are more and more extensive, involving outdoor (rain), underwater and other special use occasions, while demanding the performance of mechanical equipment products themselves, it is necessary to use them as accessories The waterproof requirements of the wires are also increased accordingly. [0003] At present, there are generally two methods of radial waterproofing and longitudinal waterproofing for multi-core waterproof flexible cords in China, that is, the inner filling of waterproof materials and the outer covering of waterproof materials. The above method has the problem that water and water vapor easily penetrate into the inside of the conductor through the conductor gap. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/295H01B7/288H01B7/00H01B13/02H01B13/22H01B13/24
CPCY02A30/14
Inventor 黄冬莲
Owner SHENZHEN LIANJIAXIANG SCI & TECH
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