Small cross section super flexible waterproof cable and preparation method thereof

A waterproof cable with a small cross-section technology, applied in the field of power cables, can solve problems affecting conductor performance, conductor oxidation, etc., and achieve the effects of good flexibility, looseness prevention, and large bendability

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

In the above method, water and water vapor easily penetrate into the conductor through the conductor gap, which will cause the conductor to oxidize and affect the performance of the conductor.

Method used

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  • Small cross section super flexible waterproof cable and preparation method thereof

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preparation example Construction

[0041] The present application also provides a method for preparing a small-section ultra-flexible waterproof cable. Since the process control conditions in the preparation process of the small-section ultra-flexible waterproof cable are prior art, details will not be repeated here. Wherein, the preparation method comprises the following steps:

[0042] S1. Conductor preparation: the conductor material is drawn and stranded to obtain the first conductor 111 and the second conductor 121 respectively.

[0043] Specifically, the preparation of the conductor 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 1.5 mm; Strand...

Embodiment 1

[0049] S1. Conductor preparation: drawing and twisting the conductor material to obtain the first conductor 111 and the second conductor 121 respectively;

[0050] S2. Preparation of cable inner core: multiple first conductors 111 are twisted to form a first conductor layer 11, and a plurality of second conductor layers 12 are sequentially coated on the outside of the first conductor layer 11, and the second conductor layer 12 is composed of multiple first conductor layers. Composed of two conductors 121, the inner water-blocking layer 13 is wrapped between two adjacent conductor layers to form the inner core 1 of the cable;

[0051] S3, wrapped outer water-blocking layer: the outer water-blocking layer 2 is evenly covered outside the inner core 1 of the cable, and the outer water-blocking layer 2 is wrapped by a water-blocking tape;

[0052] S4. Extruded insulating layer: uniformly wrap the insulating layer 3 made of halogen-free low-smoke flame-retardant polyolefin composite...

Embodiment 2

[0055] S1. Conductor preparation: drawing and twisting the conductor material to obtain the first conductor 111 and the second conductor 121 respectively;

[0056] S2. Preparation of cable inner core: multiple first conductors 111 are twisted to form a first conductor layer 11, and a plurality of second conductor layers 12 are sequentially coated on the outside of the first conductor layer 11, and the second conductor layer 12 is composed of multiple first conductor layers. Composed of two conductors 121, the inner water-blocking layer 13 is wrapped between two adjacent conductor layers to form the inner core 1 of the cable;

[0057] S3, wrapped outer water-blocking layer: the outer water-blocking layer 2 is evenly covered outside the inner core 1 of the cable, and the outer water-blocking layer 2 is wrapped by a water-blocking tape;

[0058] S4. Extruded insulating layer: the insulating layer 3 made of halogen-free low-smoke polyolefin composite material is evenly coated on t...

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Abstract

The invention discloses a small cross section super flexible waterproof cable and a preparation method thereof. The small cross section super flexible waterproof cable comprises a cable inner core, an external water resistance layer and an insulating layer, wherein the external water resistance layer and the insulating layer sequentially cover the cable inner core from inside to outside. The cable inner core is formed by sequentially stacking and coating a number of conductor layers. Each conductor layer comprises a first conductor layer and a number of second conductor layers which sequentially cover the first conductor layer. An internal water resistance layer is arranged between two adjacent conductor layers. The cross section area of the cable inner core is more than 10mm<2>. According to the invention, an internal water resistance layer is wrapped between two adjacent conductor layers; the conductor layers can be fixed and are prevented from loosening; water infiltrating into the cable can be absorbed; the internal water resistance layers which absorb water can expand more than twice their size; radial seepage of the cable can be effectively prevented; vertical seepage of the cable can be absorbed; and conductor oxidizing is prevented.

Description

technical field [0001] The invention relates to the technical field of power cables, more specifically, to a small-section ultra-flexible waterproof cable and a preparation method thereof. Background technique [0002] With the needs of social development, mechanical equipment and electronic products are used more and more widely, involving special occasions such as outdoor (rain), humidity, etc., while demanding the performance of mechanical equipment and electronic products, the The waterproof requirements of the wires used as accessories are also correspondingly increased. [0003] At present, radial waterproofing is generally adopted for single-core waterproof wires with a conductor cross-sectional area of ​​more than 10 square millimeters in China, that is, polyolefin insulating materials are used for waterproofing. In the above method, water and water vapor easily penetrate into the inside of the conductor through the conductor gap, thereby causing oxidation of the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/04H01B7/288H01B5/08H01B7/295H01B9/00
CPCY02A30/14
Inventor 黄冬莲
Owner SHENZHEN LIANJIAXIANG SCI & TECH
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