CN219123004U

CN219123004U - Photovoltaic cable

Info

Publication number: CN219123004U
Application number: CN202223463012.7U
Authority: CN
Inventors: 张军虎; 张欢; 吕益品; 陆明渊
Original assignee: Jiangsu Xinchangfeng Cable Co ltd
Current assignee: Jiangsu Xinchangfeng Cable Co ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-06-02
Anticipated expiration: 2032-12-23

Abstract

The utility model relates to a cable, in particular a photovoltaic cable, comprising: a conductor; the inner insulating layer is coated on the conductor, and is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer; the outer insulating layer is coated on the inner insulating layer, and is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer; the braiding layer is coated on the outer insulating layer, and the braiding layer is a polyester yarn layer and is not less than two layers; and the sheath layer is coated on the braiding layer, and is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer. The photovoltaic cable provided by the utility model can effectively resist ultraviolet rays, moisture, ozone and chemical corrosion, and has the advantages of long service life, simple structure and process, low cost and low price.

Description

Photovoltaic cable

Technical Field

The utility model relates to a cable, in particular to a photovoltaic cable.

Background

Because the photovoltaic cable needs to be continuously exposed to outdoor work for a long time and is subjected to environmental effects such as sun exposure, rain, wind blowing, atmospheric pollution and the like all the year round, the photovoltaic special cable is required to have better weather resistance, ultraviolet resistance, high and low temperature resistance, flame retardance and the like so as to ensure the stable and reliable operation of the photovoltaic power generation system. The existing photovoltaic cable in the market has better high-low temperature resistance and flame retardance, but has poorer weather resistance, and the sheath is easy to crack, age and degrade, so that the service life of the cable is shortened; or the production process is too complex, so that the production and manufacturing cost and the technical cost of the high-performance photovoltaic cable are higher, the selling price of the cable is higher, and the large-scale popularization of the market is not utilized.

Disclosure of Invention

In order to solve the problems, the utility model provides a photovoltaic cable with high weather resistance, ultraviolet resistance, high and low temperature resistance, good flame retardance and low cost, which comprises the following specific technical scheme:

a photovoltaic cable comprising: a conductor; the inner insulating layer is coated on the conductor, and is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer; the outer insulating layer is coated on the inner insulating layer, and is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer; the braiding layer is coated on the outer insulating layer, and the braiding layer is a polyester yarn layer and is not less than two layers; and the sheath layer is coated on the braiding layer, and is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer.

Preferably, the conductor is a tin-plated soft copper conductor.

Preferably, the inner insulating layer and the outer insulating layer are extruded layers.

Preferably, the sheath layer is an extrusion layer, and the inner surface of the sheath layer is inlaid on the braiding layer.

Compared with the prior art, the utility model has the following beneficial effects:

the photovoltaic cable provided by the utility model can effectively resist ultraviolet rays, moisture, ozone and chemical corrosion, and has the advantages of long service life, simple structure and process, low cost and low price.

1. The conductor adopts tin-plated soft copper conductor, and because the cable for the photovoltaic power generation system is laid below the solar panel, the tin-plated conductor can prevent oxidation of the conductor, thereby influencing the transmission of electric power.

2. The insulation adopts the structure form of an inner insulation layer and an outer insulation layer, and the performance is improved to a certain extent.

3. Weaving layers: the braiding layer adopts the structural style of polyester yarn, because the polyester yarn has stronger tensile strength and wearability, can effectively prevent the influence of the bad weather of external storm weather to solar power system.

4. An outer sheath: the extrusion type structure is adopted, so that the outer sheath can be effectively inlaid in the gap of the braiding layer, and the sheath is not easy to shrink.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

As shown in fig. 1, a photovoltaic cable comprises a conductor 1, an inner insulating layer 2, an outer insulating layer 3, a braiding layer 4 and a sheath layer 5 which are sequentially arranged from inside to outside.

The conductor 1 adopts a fifth tinned soft copper conductor, the wire diameter of the conductor is generally 0.20-0.40mm, and the conductor adopts a structure that a plurality of strands of wire bundles are twisted again according to different cable sections. The cable conductor 1 is easier to bend and has better flexibility due to the thinner wire diameter adopted. Since the photovoltaic power generation system is laid under the solar panel with the cable, the tin-plated conductor 1 can prevent oxidation of the conductor 1, thereby affecting the transmission of electric power.

An inner insulating layer 2 of 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin is extruded outside the conductor 1, and an outer insulating layer 3 of 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin is extruded outside the inner insulating layer 2. The two layers may be extruded in layers or may be extruded in a twin screw form disposable extrusion process. The insulation adopts the structure form of the inner insulation layer 2 and the outer insulation layer 3, and can effectively resist ultraviolet rays, moisture, ozone, chemical corrosion and the like to a certain extent.

The outside at the insulating layer sets up one deck weaving layer 4, adopts the structural style of weaving upper and lower two-layer polyester yarn, because polyester yarn has higher tensile strength and wearability, more easily aerial laying of photovoltaic cable can also effectively prevent the influence of the bad weather of external storm weather to solar power system.

A layer of 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin sheath layer 5 is extruded outside the braiding layers 4, extrusion pressure of a screw is increased by adopting an extrusion type mode, and an outer protective material is inlaid between the braiding layers 4, so that wear resistance, tensile property and vertical laying distance of the photovoltaic cable are improved. The extrusion type structure is adopted, so that the outer sheath can be effectively inlaid in the gap of the braiding layer 4, and the sheath is not easy to shrink.

The technical principle of the present utility model is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the utility model and should not be taken in any way as limiting the scope of the utility model. Other embodiments of the utility model will occur to those skilled in the art from consideration of the specification and practice of the utility model without the need for inventive faculty, and are within the scope of the claims.

Claims

1. A photovoltaic cable, comprising:

a conductor (1);

an inner insulating layer (2), wherein the inner insulating layer (2) is coated on the conductor (1), and the inner insulating layer (2) is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer;

the outer insulating layer (3) is coated on the inner insulating layer (2), and the outer insulating layer (3) is a 125 ℃ halogen-free low-smoke flame-retardant irradiation crosslinked polyolefin layer;

the braiding layer (4) is coated on the outer insulating layer (3), and the braiding layer (4) is a polyester yarn layer and is not less than two layers; a kind of electronic device with high-pressure air-conditioning system

The sheath layer (5), sheath layer (5) cladding is on weaving layer (4), sheath layer (5) are 125 ℃ halogen-free low smoke flame retardant irradiation crosslinked polyolefin layer.

2. A photovoltaic cable according to claim 1, characterized in that the conductor (1) is a tin-plated soft copper conductor (1).

3. A photovoltaic cable according to claim 1, characterized in that the inner insulating layer (2) and the outer insulating layer (3) are extruded layers.

4. A photovoltaic cable according to any of claims 1 to 3, characterized in that the sheath layer (5) is an extruded layer and the inner surface of the sheath layer (5) is embedded on the braid (4).