CN218568448U

CN218568448U - 0.6-1kV ultra-large section buried low-smoke halogen-free flame-retardant power cable

Info

Publication number: CN218568448U
Application number: CN202222858807.1U
Authority: CN
Inventors: 滕兆丰; 童祥云; 杨丽伟; 唐浩
Original assignee: HANGZHOU CABLE CO Ltd
Current assignee: HANGZHOU CABLE CO Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-03
Anticipated expiration: 2032-10-28

Abstract

The utility model relates to a power cable technical field specifically is 0.6-1kV bury formula low smoke and zero halogen flame retardant power cable with super large cross-section. The cable comprises a wire core with an oversized section, and is characterized in that: the wire sinle silk is formed by the transposition respectively through the multilayer by a plurality of layers of circular copper conductor or special-shaped copper conductor, is provided with the steel strand core in the wire sinle silk, and the skin of wire sinle silk is the internal insulation layer, sets up low smoke and zero halogen flame retardant coating outside the internal insulation layer, then the peripheral hardware band layer that blocks water, the band layer that blocks water is provided with the inner sheath outward, the inner sheath is provided with the armor outward, be provided with the glass fiber composite bed outside the armor, set up the oversheath outside the glass fiber composite bed. According to the buried cable, the tensile capacity of the cable is improved by arranging the plurality of steel strand cores, and the buried cable is suitable for the conditions that an urban corridor is narrow and the cable is difficult to arrange; the anticorrosion and ant-proof performance of the cable is improved by arranging the anticorrosion layer and the outer sheath with ant-proof function.

Description

0.6-1kV buried low-smoke halogen-free flame-retardant power cable with super-large cross section

Technical Field

The utility model relates to a power cable technical field specifically is 0.6-1kV bury formula low smoke and zero halogen flame retardant power cable with super large cross-section.

Background

The wire and cable industry is the second industry in China next to the automobile industry, and both the product variety satisfaction rate and the domestic market share rate exceed 80%. The total production value of Chinese electric wires and cables exceeds the United states worldwide, and the electric wires and cables become the first major electric wire and cable producing country in the world. Along with the high-speed development of the China wire and cable industry, the number of newly added enterprises is continuously increased, and the overall technical level of the industry is greatly improved.

The Chinese economy continues to increase rapidly, a huge market space is provided for cable products, and the Chinese market is strongly tempted, so that the world focuses on the Chinese market. With the continuous enlargement of the scales of industries such as the Chinese power industry, the data communication industry, the urban rail transit industry, the automobile industry, the shipbuilding industry and the like, the demand on wires and cables is rapidly increased, and the wire and cable industry has huge development potential in the future.

At present, cables are more in application scenes, overhead cables and buried cables exist, and in cities, more and more cables are applied to production and living in a ground-embedded mode. Because the cable that enters the ground has the disguise, therefore, the life of cable and the requirement of security are higher, once the safety problem takes place, very difficult discovery. The safety of the cable entering the ground mainly relates to the aspects of flame retardance, water resistance, rat bite prevention, ant prevention and the like. In addition, based on the defects of the current urban underground corridor construction, the arrangement of the underground cable is simpler and more violent than the arrangement of an overhead cable, and therefore, the requirement on the strength of the cable is higher.

In order to ensure the service life and the safety of the cable entering the ground, in particular, the company is required to develop corresponding products.

SUMMERY OF THE UTILITY MODEL

The utility model discloses based on the problem that exists at present, provide a bury formula low smoke and zero halogen flame retardant power cable 0.6-1kV super large cross-section.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a 0.6-1kV bury formula low smoke and zero halogen flame retardant power cable with super large cross section, includes the wire core that has super large cross section, its characterized in that: the wire sinle silk is formed by the transposition respectively through the multilayer by a plurality of layers of circular copper conductor or special-shaped copper conductor, is provided with the steel strand core in the wire sinle silk, and the skin of wire sinle silk is the internal insulation layer, sets up low smoke and zero halogen fire-retardant layer outside the internal insulation layer, then the outer band layer that blocks water, the band layer that blocks water is provided with the inner sheath outward, the inner sheath is provided with the armor outward, be provided with the glass fiber composite bed outside the armor outward, the glass fiber composite bed sets up the oversheath outward.

Preferably, the adjacent layers of the wire core are opposite in twisting direction.

Preferably, the steel strand core and the conductor of the wire core have the same outer diameter, and the steel strand core is arranged in the center of the wire core or is also arranged in two symmetrically arranged layers of the wire core.

Preferably, an anticorrosive layer is arranged outside the armor layer.

Preferably, the outer sheath is an ant-proof outer sheath made of plastic of camphor ball powder.

The utility model has the advantages that:

according to the buried cable, the insulativity of the cable is fully improved through the insulating layer, and the interference of the cable and weak current on a weak wire when the cable and the weak current are in the same corridor is reduced through the arrangement of the shielding layer;

the tensile capacity of the cable is improved by arranging the plurality of steel strand cores, and the cable is suitable for the conditions of narrow urban corridors and difficult cable arrangement;

the anticorrosion layer and the outer sheath with the ant prevention function are arranged, so that the anticorrosion and ant prevention performances of the cable are improved;

the glass fiber composite layer is particularly arranged, so that the overall strength of the cable is improved;

the safety of the whole cable in arrangement and use is improved from the aspects.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the present invention.

In the figure: 1 wire sinle silk, 2 steel strand core, 3 internal insulation layer, 4 low smoke and zero halogen flame retardant coating, 5 band layer that blocks water, 6 inner sheaths, 7 armor, 8 outer water blocking layer, 9 oversheath, 10 anticorrosive coating, 11 shielding layers.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific examples. Unless otherwise defined, the methods and structures in the following embodiments of the present invention are conventional methods and designs in the art.

Example 1: the company develops a 0.6-1kV ultra-large section buried low-smoke halogen-free flame-retardant power cable aiming at the characteristics of the existing buried cable, and specifically sets parameters of each layer according to the voltage.

This cable is including having super large cross-section's wire sinle silk 1, wire sinle silk 1 is formed by the transposition respectively through the multilayer by a plurality of layers of circular copper conductor or special-shaped copper conductor, be provided with steel strand core 2 in wire sinle silk 1, wire sinle silk 1's skin is

internal insulation

3, 3 external low smoke and zero halogen flame retardant coating 4 that set up of internal insulation, then the external band layer 5 that blocks water, the band layer 5 that blocks water is provided with inner sheath 6 outward, inner sheath 6 is provided with armor 7 outward, armor 7 is provided with outer water blocking layer 8 outward, outer water blocking layer 8 is provided with glass fiber composite bed 8 outward, 8 external oversheath 9 that sets up of glass fiber composite bed.

In the multilayer wire core 1, the twisting directions of the conductors of the adjacent layers are opposite, so that the biting force is increased; and the outer diameter of the conductor of the steel strand core 2 is the same as that of the conductor of the wire core 1, so that the steel strand core 2 can be fused with the conductor into a whole.

In order to improve the tensile action of the steel strand, the steel strand core 2 is arranged in the center of the wire core 1 and is also arranged in a certain layer of the wire core 1, and the two steel strand cores are symmetrically arranged. In addition, in order to prevent the ant from being bitten by the ant when buried underground, the outer sheath 9 is designed as an ant-proof outer sheath 9 made of plastic of camphor ball powder.

Based on the difference of the service environment of the power cable, the power cable is further improved on the basis of the embodiment 1, and particularly, an anti-corrosion layer 10 is arranged outside the outer water-blocking armor layer 7, so that the anti-corrosion performance and the insulating performance of the power cable in certain severe environments are improved. In a humid, rot-prone environment, special consideration needs to be given to the power cable to increase the service life of the power cable. Meanwhile, a shielding layer 11 is arranged outside the inner insulating layer 3, and the interference of the cable and weak current in the same corridor to the weak wire is reduced by the shielding layer.

It will be apparent to those skilled in the art that the embodiments described above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. It will be apparent to those skilled in the art that certain modifications, combinations, and variations can be made in light of the above teachings.

Claims

1. The utility model provides a 0.6-1kV bury formula low smoke and zero halogen flame retardant power cable with super large cross section, includes wire sinle silk (1) that has super large cross section, its characterized in that: wire sinle silk (1) is formed by the transposition respectively through the multilayer by a plurality of layers of circular copper conductor or special-shaped copper conductor, be provided with steel strand core (2) in wire sinle silk (1), the skin of wire sinle silk (1) is internal insulation layer (3), internal insulation layer (3) are provided with low smoke and zero halogen flame retardant coating (4) outward, then the overcoat layer that blocks water outward (5), the overcoat layer that blocks water (5) are provided with outward (6), be provided with armor (7) outward (6), armor (7) are provided with glass fiber composite bed (8) outward, glass fiber composite bed (8) are provided with outward (9).

2. The 0.6-1kV buried low-smoke halogen-free flame-retardant power cable with the ultra-large cross section as claimed in claim 1, wherein: the adjacent layers of the wire core (1) have opposite twisting directions.

3. The 0.6-1kV buried low-smoke halogen-free flame-retardant power cable with the ultra-large cross section as claimed in claim 1, wherein: the outer diameters of the conductors of the steel strand core (2) and the conductor core (1) are the same, and the steel strand core (2) is arranged in the center of the conductor core (1) or is also arranged in two symmetrically arranged layers of the conductor core (1).

4. The 0.6-1kV buried low-smoke halogen-free flame-retardant power cable with the ultra-large cross section as claimed in claim 1, wherein: an anti-corrosion layer (10) is arranged outside the armor layer (7).

5. The 0.6-1kV buried low-smoke halogen-free flame-retardant power cable with the ultra-large cross section as claimed in claim 1, wherein: the outer sheath (9) is an ant-proof outer sheath (9) made of plastic rubber of camphor ball powder.

6. The 0.6-1kV ultra-large cross section buried low-smoke halogen-free flame-retardant power cable according to claim 1, characterized in that: the shielding layer (11) is arranged outside the inner insulating layer (3).