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Photovoltaic cable and its preparation process

A photovoltaic cable and preparation process technology, used in cable/conductor manufacturing, insulating cables, insulating conductors/cables, etc., can solve the problem of affecting the use of photovoltaic systems, and it will exist between the insulating layer and the sheath layer if it is not completely dried , When used in places with high temperature and long production cycle, it can achieve good corrosion resistance, reduce adverse effects and long service life.

Active Publication Date: 2020-07-28
西安双盛电线电缆有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the production cycle is long. In the production process, the inner insulating layer is first formed. After the inner insulating layer is formed, it needs to be water-cooled and shaped, and then the outer insulating layer of the inner layer is covered with a sheath layer.
If the water on the surface of the insulating layer is not completely dry, it will exist between the insulating layer and the sheath layer. When used in a place with high temperature, there may be water and air between the insulating layer and the sheath layer due to the heating of the cable. Unfavorable consequences of expansion affecting the use of photovoltaic systems

Method used

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  • Photovoltaic cable and its preparation process
  • Photovoltaic cable and its preparation process
  • Photovoltaic cable and its preparation process

Examples

Experimental program
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Effect test

Embodiment 1

[0052] refer to figure 1 , is a photovoltaic cable disclosed in the present invention, including tinned copper soft wire 1, and an insulating layer 2 and a sheath layer 3 that are sequentially coated on the peripheral wall of the galvanized copper soft wire from the inside and outside and integrally formed. The insulating layer 2 is composed of low-smoke, halogen-free, flame-retardant polyolefin insulating material, and the sheath layer 3 is composed of low-smoke, halogen-free, flame-retardant polyolefin sheathing material.

[0053] The specific low-smoke halogen-free flame-retardant polyolefin sheathing material includes the following components by weight: LLDPE 66kg, POE 34kg, polyisobutylene 20kg, polypeptide-dimethylsiloxane copolymer 10kg, white carbon black 2kg, bis-[γ -(triethoxysilyl)propyl]tetrasulfide 1kg, epoxy soybean oil compatibilizer 1kg, flame retardant 10kg, oleic acid amide 1kg, 2,6-di-tert-butyl-4-aminophenol 0.5kg , Tris(2,4-di-tert-butylphenyl)phosphite 0...

Embodiment 6

[0064] The preparation process of the photovoltaic cable comprises the following preparation steps:

[0065] Step 1: Prepare tinned copper soft wire 1, low-smoke, halogen-free, flame-retardant polyolefin insulation material and low-smoke, halogen-free, flame-retardant polyolefin sheath material;

[0066] Step 2: Tension the tinned copper soft wire 1 through the tension frame and convey it forward at a constant speed, and the conveying speed is 180m / min;

[0067] Step 3: Use a vacuum twin-screw extruder for extrusion operation. The vacuum twin-screw extruder includes two extrusion screws and a vacuum co-extrusion die. Add low-smoke, halogen-free and flame-retardant The polyolefin insulation material is melt-extruded, and the low-smoke, halogen-free and flame-retardant polyolefin sheath material is added to the hopper of another extrusion screw, and the insulating layer 2 is extruded first, and then when the insulating layer 2 is in a molten state, the second The extrusion scre...

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Abstract

The invention relates to a photovoltaic cable and a preparation process thereof in the cable field. The photovoltaic cable comprises a tinned copper soft wire, an insulation layer and a sheath layer,wherein the insulation layer and the sheath layer are sequentially arranged on the peripheral wall of the tinned copper soft wire from inside to outside in a coating mode and are integrally formed. Since the insulation layer and the sheath layer are integrally formed, entry of water and air into an interlayer between the inner insulation layer and the inner sheath layer can be directly eradicatedin the production process, and therefore the adverse result that usage of a photovoltaic system is influenced after water and air between an insulator and a sheath expand due to cable heating in the using process is eradicated. The cable is safe in performance in the using process, the service life and maintenance period of the cable can be prolonged, and the cable is safe in use and good in performance.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a photovoltaic cable and a preparation process thereof. Background technique [0002] At present, solar photovoltaic technology has been widely used, and the photovoltaic wire and cable technology connected with photovoltaic matching connection with solar photovoltaic has been put into corresponding research. Solar photovoltaic panels are mostly installed in deserts, Gobi, mountains, offshore and other places that do not occupy cultivated land and have sufficient sunlight. These places also put forward higher technical requirements for the corresponding photovoltaic cables in terms of sun protection, waterproof, fire prevention, ultraviolet protection, insect protection, high temperature resistance, corrosion resistance, and fire safety. [0003] At present, common photovoltaic cables are two-layer plastic wires, the inner layer is an insulating layer, and the outer layer is a sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B7/02H01B7/17H01B7/295H01B13/14H01B13/24C08L23/08C08K13/06C08K3/22C08K9/10C08K3/02C08K3/36
CPCC08K2003/026C08K2003/2227C08L23/0815C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/03C08L2205/035H01B7/0275H01B7/17H01B7/295H01B13/143H01B13/148H01B13/24C08K13/06C08K3/22C08K9/10C08K3/02C08K3/36
Inventor 王小伟王京党
Owner 西安双盛电线电缆有限责任公司
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