Expanded angle type bending-resistant photovoltaic cable

A photovoltaic cable, anti-bending technology, applied in the direction of insulated cables, cables, circuits, etc., can solve the problems of cable bending point fatigue, potential safety hazards, cable damage, etc., to achieve anti-bending, prolong service life, improve intensity effect

Inactive Publication Date: 2021-08-06
张敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Cables are generally rolled in rolls during transportation, so the cables have a certain resistance to bending. However, during the installation or use of cables, accidental bends often occur that are much larger than the bending degree of rolling. When a large bend occurs and fails to return to its original shape in time, it is easy to cause the bending point of the cable to be in a fatigue state all the time, and it is easy to cause this place to age faster than other parts, resulting in partial damage to the cable after long-term use , there is a certain security risk

Method used

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  • Expanded angle type bending-resistant photovoltaic cable
  • Expanded angle type bending-resistant photovoltaic cable
  • Expanded angle type bending-resistant photovoltaic cable

Examples

Experimental program
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Effect test

Embodiment 1

[0038] see Figure 1-2 , an angle-expanding anti-bending photovoltaic cable, comprising a plurality of wire cores 3, an insulating layer 2 wrapped outside the wire cores 3, and a sheath layer 1 wrapped outside the insulating layer 2, and the outer ends of the sheath layer 1 are fixedly connected Multiple groups of evenly distributed angle-expanding external reinforcement strips 4, each adjacent two groups of angle-expanding external reinforcement strips 4 are misplaced, that is, the middle part of one group of medium-angle-expanding external reinforcement strips 4 corresponds to the other group's two expansion angles The gaps between the outer fixing bars 4 make it difficult to produce obvious gaps between the radially adjacent multiple expansion angle outer fixing bars 4, thereby effectively avoiding the situation that the bending range becomes larger when bending at this place, so that The anti-bending effect of the cable is better, and the inner part of the outer fixing str...

Embodiment 2

[0044] The difference between this embodiment and Embodiment 1 is that no two-way outer push rod is arranged in the double-bow support plate 5, and structures such as the outer cladding layer 11, the liquid-absorbing cotton layer 10 and the liquid guide wire 12 are correspondingly removed, so that the structure of the present embodiment It is relatively simple, the cost is low, and it can also achieve the effect of anti-bending. It is more suitable for small photovoltaic systems and places where the service life of cables is not too high.

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Abstract

The invention discloses an angle-expanded anti-bending photovoltaic cable, and belongs to the field of photovoltaic cables. According to the angle-expanded anti-bending photovoltaic cable, an angle-expanded outer fixing strip embedded with a double-bow supporting plate is adopted; compared with the whole cable, the angle-expanded outer fixing strip is short in length and high in hardness, so that the bending amplitude of the angle-expanded outer fixing strip is smaller under the action of the same force, namely, the vertex angle formed after the angle-expanded outer fixing strip is bent is larger and closer to a flat angle; and when the cable is bent, the vertex angle formed after the bending point of the cable is bent can be remarkably increased compared with the prior art, so that the anti-bending effect is effectively achieved, and the service life of the cable is effectively prolonged; under the action of a bidirectional outwards pushing rod, the compressive strength of the double-bow supporting plate can be improved, the anti-bending effect of the cable is better; and when the bending force is too large, double-color liquid overflows to enable the end parts of the angle-expanded outer fixing strip to develop colors, so that the risk of local stress damage is reminded in time, and the potential safety hazard is reduced.

Description

technical field [0001] The invention relates to the field of photovoltaic cables, in particular to an angle-expanding anti-bending photovoltaic cable. Background technique [0002] The cable is mainly composed of the following 4 parts. ① Conductive wire core: made of high conductivity material (copper or aluminum). According to the requirements of cable softness under laying conditions, each wire core may be formed by twisting a single wire or multiple wires. ②Insulation layer: The insulation material used for cables should have high insulation resistance, high breakdown electric field strength, low dielectric loss and low dielectric constant. Commonly used insulating materials in cables are oil-impregnated paper, polyvinyl chloride, polyethylene, cross-linked polyethylene, rubber, etc. ③ Sealing sheath: protect the insulated wire core from mechanical, moisture, moisture, chemicals, light, etc. damage. For insulation susceptible to moisture, lead or aluminum extruded her...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01B7/18H01B7/288H01B7/36H01B7/40H01B7/17
CPCH01B7/17H01B7/18H01B7/288H01B7/361H01B7/40
Inventor张敏
Owner张敏