CN217008751U

CN217008751U - Heat insulation type photovoltaic cable

Info

Publication number: CN217008751U
Application number: CN202220646615.1U
Authority: CN
Inventors: 艾亮; 陈合建
Original assignee: Shenyang Junhang Power Supply Technology Co ltd
Current assignee: Shenyang Junhang Power Supply Technology Co ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-07-19
Anticipated expiration: 2032-03-24

Abstract

The utility model discloses a heat insulation type photovoltaic cable, and particularly relates to the technical field of photovoltaic cables. According to the utility model, the armor layer is arranged between the first asbestos layer and the second asbestos layer, so that the heat conduction can be effectively blocked, and the heat insulation performance of the heat-insulating material can be effectively improved.

Description

Heat insulation type photovoltaic cable

Technical Field

The utility model relates to the technical field of photovoltaic cables, in particular to a heat insulation type photovoltaic cable.

Background

The photovoltaic cable is a special cable in a photovoltaic power station, and is often exposed to sunlight in the using process, and a photovoltaic cable solar system often uses the photovoltaic cable under severe environmental conditions, so the cable used by the photovoltaic power station needs to have good high temperature resistance and heat insulation performance.

But photovoltaic cable among the prior art is for the intensity of reinforcing self, so can set up one deck armor in outer lag inside more for protect inside core, though can improve the barrier propterty of cable through addding the armor, nevertheless because the raw materials that the armor used are mostly the better metal of thermal conductivity, consequently external heat conducts to inside through this armor easily, and influences the heat-proof quality of cable.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a heat insulation type photovoltaic cable, which can effectively block heat conduction by arranging an armor layer between a first asbestos layer and a second asbestos layer, thereby effectively improving the heat insulation performance of the utility model and solving the problems in the background art.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a heat insulation type photovoltaic cable comprises a conductor, wherein a conductor shielding layer is arranged at the outer end of the conductor, an insulating layer is arranged at the outer end of the conductor shielding layer, an insulating shielding layer is arranged at the outer end of the insulating layer, a first porous fiber layer is arranged at the outer end of the insulating shielding layer, the first porous fiber layer is wound at the outer end of the insulating shielding layer, a first asbestos layer is wound at the outer end of the first porous fiber layer, an armor layer is wound at the outer end of the first asbestos layer, a second asbestos layer is wound at the outer end of the armor layer, a second porous fiber layer is wound at the outer end of the second asbestos layer, a sheath is arranged at the outer end of the second porous fiber layer, a plurality of first through holes are formed in the first asbestos layer and the second asbestos layer, a plurality of second through holes are formed in the first porous fiber layer and the second porous fiber layer, and air heat conduction can be blocked through the plurality of first through holes and the second through holes, the first porous fiber layer, the first asbestos layer, the second asbestos layer and the second porous fiber layer are all made of porous materials, so that heat radiation can be effectively isolated, and the heat insulation performance can be further improved.

Further, the winding direction of the first asbestos layer is opposite to that of the first porous fiber layer, the winding direction of the first asbestos layer is opposite to that of the armor layer, and close contact among the layers can be achieved by winding the first porous fiber layer, the first asbestos layer and the armor layer in opposite directions.

Further, the winding direction of the second asbestos layer is opposite to that of the second porous fiber layer, and the winding direction of the second asbestos layer is opposite to that of the armor layer, so that the contact tightness between the layers is improved.

Further, the sheath outer end is equipped with thermal barrier coating, thermal barrier coating adopts heat reflection coating to make, can improve thermal-insulated effect through setting up thermal barrier coating.

Furthermore, the conductor shielding layer is made of a semiconductor paper tape, the insulation shielding layer is made of a copper tape, and the semiconductor paper tape and the copper tape can effectively improve the shielding effect on external electromagnetic interference.

Furthermore, the insulating layer is made of cross-linked polyethylene, the molecular structure of the cross-linked polyethylene is changed from straight-chain to three-dimensional net structure by chemical or physical methods, and after the polyethylene is cross-linked, the original excellent performance of the polyethylene is maintained, and the mechanical, heat-resistant, chemical-resistant, creep-resistant, environmental cracking-resistant and other performances of the polyethylene are overcome and improved.

Furthermore, the armor layer is made of a copper strip, the copper strip is wound at the outer end of the first asbestos layer, and the strength of the copper strip is utilized to protect the inner core body, so that the protection performance of the utility model is improved.

Further, the sheath is made of polyethylene, which is a good electrical insulating material with good electrical resistivity, and polyethylene has low strength, hardness and rigidity, but high ductility and impact strength and low friction, which protects the internal structure.

The utility model has the following advantages:

according to the utility model, the first porous fiber layer and the first asbestos layer are wound in the armor layer in opposite directions, so that heat conducted by the armor layer can be isolated, the second asbestos layer and the second porous fiber layer are wound in the outer end of the armor layer in opposite directions, the first through hole formed in the second asbestos layer and the second through hole formed in the second porous fiber layer are utilized, the convection heat conduction of air is effectively inhibited, and the hole wall surface can continuously reflect and refract heat radiation, so that the radiation heat conduction can be effectively isolated.

Drawings

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a cross-sectional view provided by the present invention;

FIG. 3 is an enlarged view of A of FIG. 2 according to the present invention;

FIG. 4 is a schematic structural view of an armor layer and a first asbestos layer provided by the present invention;

fig. 5 is a schematic structural view of a first porous fiber layer and a first asbestos layer provided in the present invention.

In the figure: the cable comprises a conductor 1, a conductor shielding layer 2, an insulating layer 3, an insulating shielding layer 4, a first porous fiber layer 5, a first asbestos layer 6, an armor layer 7, a second asbestos layer 8, a second porous fiber layer 9, a sheath 10, a thermal insulation coating 11, a first through hole 12 and a second through hole 13.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the utility model will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the utility model and that it is not intended to limit the utility model to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5 of the specification, the insulated photovoltaic cable of this embodiment includes a conductor 1, a conductor shielding layer 2 is arranged at the outer end of the conductor 1, an insulating layer 3 is arranged at the outer end of the conductor shielding layer 2, the insulating layer 3 is made of cross-linked polyethylene, i.e. polyethylene with a molecular structure changed from straight-chain to three-dimensional net structure by chemical or physical method, after cross-linking, not only maintains the original excellent performance of the polyethylene, but also overcomes and improves the mechanical, heat-resistant, chemical-resistant, creep-resistant, environmental cracking-resistant and other performances of the polyethylene, the outer end of the insulating layer 3 is provided with an insulating shielding layer 4, the conductor shielding layer 2 is made of a semiconductor paper tape, the insulating shielding layer 4 is made of a copper tape, the shielding of external electromagnetic interference can be effectively improved by using the semiconductor paper tape and the copper tape;

the outer end of the insulation shielding layer 4 is provided with a first porous fiber layer 5, the first porous fiber layer 5 is wound at the outer end of the insulation shielding layer 4, the outer end of the first porous fiber layer 5 is wound with a first asbestos layer 6, the outer end of the first asbestos layer 6 is wound with an armor layer 7, the armor layer 7 is made of a copper strip, the copper strip is wound at the outer end of the first asbestos layer 6, the inner core body can be protected by utilizing the strength of the copper strip, so that the protection performance of the utility model is improved, the outer end of the armor layer 7 is wound with a second asbestos layer 8, the outer end of the second asbestos layer 8 is wound with a second porous fiber layer 9, the outer end of the second porous fiber layer 9 is provided with a sheath 10, the sheath 10 is made of polyethylene, polyethylene is a good electric insulating material and has good electrical resistivity, and polyethylene has low strength, Hardness and rigidity, but high ductility and impact strength and low friction, able to protect the internal structures;

the outer end of the sheath 10 is provided with a heat insulation coating 11, the heat insulation coating 11 is made of heat reflection coating, the heat insulation effect can be improved by arranging the heat insulation coating 11, the first asbestos layer 6 and the second asbestos layer 8 are respectively provided with a plurality of first through holes 12, the first porous fiber layer 5 and the second porous fiber layer 9 are respectively provided with a plurality of second through holes 13, air heat conduction can be blocked through the plurality of first through holes 12 and the plurality of second through holes 13, and heat radiation conduction can be isolated, so that the heat insulation type of the heat insulation type heat insulation.

The implementation scenario is specifically as follows: according to the utility model, the first porous fiber layer 5 and the first asbestos layer 6 are wound in the armor layer 7 in opposite directions, so that heat conducted by the armor layer 7 can be isolated, the second asbestos layer 8 and the second porous fiber layer 9 are wound at the outer end of the armor layer 7 in opposite directions, the first through holes 12 formed in the second asbestos layer 8 and the second through holes 13 formed in the second porous fiber layer 9 are utilized, the convection heat conduction of air is effectively inhibited, and the wall surface of the hole can continuously reflect and refract heat radiation, so that the radiation heat conduction can be effectively isolated.

Referring to fig. 4 and 5 in the specification, the first asbestos layer 6 is wound in the direction opposite to the winding direction of the first porous fiber layer 5, the first asbestos layer 6 is wound in the direction opposite to the winding direction of the armor layer 7, close contact among the layers can be achieved by winding the first porous fiber layer 5, the first asbestos layer 6 and the armor layer 7 in opposite directions, the second asbestos layer 8 is wound in the direction opposite to the winding direction of the second porous fiber layer 9, and the second asbestos layer 8 is wound in the direction opposite to the winding direction of the armor layer 7, so that contact tightness among the layers is improved.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. A thermal-insulated type photovoltaic cable, includes conductor (1), its characterized in that: the cable is characterized in that a conductor shielding layer (2) is arranged at the outer end of the conductor (1), an insulating layer (3) is arranged at the outer end of the conductor shielding layer (2), an insulating shielding layer (4) is arranged at the outer end of the insulating shielding layer (3), a first porous fiber layer (5) is arranged at the outer end of the insulating shielding layer (4), the first porous fiber layer (5) is wound at the outer end of the insulating shielding layer (4), a first asbestos layer (6) is wound at the outer end of the first porous fiber layer (5), an armor layer (7) is wound at the outer end of the first asbestos layer (6), a second asbestos layer (8) is wound at the outer end of the second asbestos layer (8), a sheath (10) is arranged at the outer end of the second porous fiber layer (9), a plurality of first through holes (12) are formed in each of the first asbestos layer (6) and the second asbestos layer (8), a plurality of second through holes (13) are formed in the first porous fiber layer (5) and the second porous fiber layer (9).

2. The insulated photovoltaic cable of claim 1, wherein: the winding direction of the first asbestos layer (6) is opposite to that of the first porous fiber layer (5), and the winding direction of the first asbestos layer (6) is opposite to that of the armor layer (7).

3. The insulated photovoltaic cable of claim 1, wherein: the winding direction of the second asbestos layer (8) is opposite to that of the second porous fiber layer (9), and the winding direction of the second asbestos layer (8) is opposite to that of the armor layer (7).

4. The insulated photovoltaic cable of claim 1, wherein: the outer end of the sheath (10) is provided with a heat insulation coating (11), and the heat insulation coating (11) is made of heat reflection coating.

5. The insulated photovoltaic cable of claim 1, wherein: the conductor shielding layer (2) is made of a semiconductor paper tape, and the insulation shielding layer (4) is made of a copper tape.

6. The insulated photovoltaic cable of claim 1, wherein: the insulating layer (3) is made of a cross-linked polyethylene material.

7. The insulated photovoltaic cable of claim 1, wherein: the armor layer (7) is made of a copper strip, and the copper strip is wound at the outer end of the first asbestos layer (6).

8. The insulated photovoltaic cable of claim 1, wherein: the sheath (10) is made of polyethylene material.