CN215376956U

CN215376956U - Improved high-performance flame-retardant cable

Info

Publication number: CN215376956U
Application number: CN202121105592.5U
Authority: CN
Inventors: 张毅平; 孙云; 卫黎鹏; 张云飞; 周雪金; 史达超; 谈柳婷; 孙靖锋; 陈勇军; 薛乐琦
Original assignee: Wuxi Sunan Cable Co ltd
Current assignee: Wuxi Sunan Cable Co ltd
Priority date: 2021-05-22
Filing date: 2021-05-22
Publication date: 2021-12-31
Anticipated expiration: 2031-05-22

Abstract

The utility model relates to an improved high-performance flame-retardant cable which comprises a carbon nano tube fiber bundle formed by twisting the carbon nano tube fiber bundle in the center of the cable, wherein a round structure conductor consisting of five groups of separation conductors is arranged outside the carbon nano tube fiber bundle, an insulating tape is arranged between the separation conductors, a conductor shielding layer, a fluoroplastic insulating layer and an insulating shielding layer are sequentially arranged outside the round structure conductor, filling is arranged in the gap of a cable core, a wrapping layer, a flame-retardant layer I, a weaving layer, a flame-retardant layer II and an outer sheath are sequentially arranged outside the cable core and the filling, four humidity-sensitive insulating wire cores are embedded in the weaving layer, each humidity-sensitive insulating wire core comprises a conductor, a humidity-sensitive insulating layer is arranged outside the conductor, and a water blocking rope is respectively arranged on two sides of each group of humidity-sensitive insulating wire cores. The utility model has excellent transmission performance, takes away moisture by introducing larger current into the moisture-sensitive insulated wire core to dissipate heat, and has good integral flame-retardant effect and long service life.

Description

Improved high-performance flame-retardant cable

Technical Field

The utility model relates to a cable, in particular to a flame-retardant cable.

Background

With the rapid development of national economy, the using amount and the application range of the cable used as the main artery of the national economy are larger and larger. In recent years, the demand of industries such as power plants, transformer substations, smelting, petrochemical industry and the like on cables is extremely large.

The existing flame-retardant cable has the following defects: the transmission performance of a conductor is general; ② there is no good solution to the moisture that has entered when used in humid environment.

Disclosure of Invention

The purpose of the utility model is as follows: the utility model aims to overcome the defects in the prior art and provide the improved high-performance flame-retardant cable which is excellent in transmission performance, good in integral flame-retardant effect and long in service life, and moisture is taken away by introducing larger current into a humidity-sensitive insulated wire core to dissipate heat.

The technical scheme is as follows: in order to solve the technical problems, the utility model provides an improved high-performance flame-retardant cable, which comprises a carbon nano tube fiber bundle formed by twisting the carbon nano tube fiber bundle at the center of the cable, wherein a round structure conductor consisting of five groups of separated conductors is arranged outside the carbon nano tube fiber bundle, an insulating tape is arranged between the separated conductors, a fluoroplastic insulating layer is arranged outside the round structure conductor shielding layer, an insulating shielding layer is arranged outside the fluoroplastic insulating layer and forms an insulating wire core, a plurality of insulating wire cores are arranged in a tangent mode to form a cable core, filling is arranged in a gap between the cable cores, wrapping layers are arranged outside the cable core and the filling, a flame-retardant layer I is arranged outside the wrapping layers, a weaving layer is arranged outside the flame-retardant layer I, four moisture-sensitive insulating wire cores are embedded in the weaving layer and are divided into two groups symmetrically, each group of two adjacent sets, the moisture sensitive insulation core includes the conductor, the conductor outside is equipped with the moisture sensitive insulation layer, respectively establishes a rope that blocks water in every group moisture sensitive insulation core both sides, the rope that blocks water also imbeds the weaving layer in, be equipped with fire-retardant layer II in the weaving layer outside, be equipped with the oversheath in fire-retardant layer II outside.

Further, the flame-retardant layer I is a high-flame-retardant polyethylene layer.

Further, the flame-retardant layer II is a low-smoke halogen-free A-level flame-retardant polyolefin layer.

Further, the outer sheath is a polyolefin outer sheath.

Furthermore, the moisture-sensitive insulating layer is formed by copolymerizing and crosslinking a styrene polymer with a strong polar group and acrylic acid.

Has the advantages that: compared with the prior art, the utility model has the following remarkable advantages: the utility model has reasonable overall structure arrangement, the carbon nano tube fiber bundle is added in the copper or aluminum divided conductor, the conductive property of the carbon nano tube fiber bundle is far higher than that of a metal conductor such as copper or aluminum, the current carrying capacity is improved, the skin effect of the conductor is weakened, the current is more uniformly distributed in the conductor, the fluoroplastic insulating layer is adopted, the insulating effect is good, the flame retardant layer I and the flame retardant layer II are adopted, the overall flame retardant effect is good, three moisture-sensitive insulating wire cores are embedded in the weaving layer, the water blocking rope is a hydrophilic water blocking material, when moisture enters from the outside, more water is gathered in the water blocking rope, the water blocking rope is close to the moisture-sensitive insulating layer, the moisture-sensitive insulating layer can adsorb the moisture and sense the moisture, the resistivity of the insulating layer can be changed along with the moisture, the moisture-sensitive insulating layer adopts styrene polymer with strong polar groups to be copolymerized with acrylic acid and crosslinked, and when the insulating material encounters the moisture, the water molecules are adsorbed by polar groups, more and more water molecules are condensed to form liquid water, the insulating material loses efficacy and becomes electrolyte solution capable of conducting electricity, so that the two insulating wire cores are conducted, larger current is introduced to dissipate heat, moisture is taken away, the product is matched with each layer, the operation is stable and reliable, the whole service life is long, and the practical use requirements are met.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Detailed Description

The utility model is further described below with reference to the figures and examples.

As shown in figure 1, the improved high-performance flame-retardant cable comprises a carbon nanotube fiber bundle 1 formed by twisting the center of the cable, a round structure conductor consisting of five groups of separation conductors 2 is arranged outside the carbon nanotube fiber bundle 1, an insulating tape 3 is arranged between the separation conductors 2, a conductor shielding layer 4 is arranged outside the round structure conductor, a fluoroplastic insulating layer 5 is arranged outside the conductor shielding layer 4, an insulating shielding layer 6 is arranged outside the fluoroplastic insulating layer 5 and forms an insulating wire core, a plurality of insulating wire cores are arranged in a tangent mode to form a cable core, a filling 7 is arranged in a gap between the cable core and the filling 7, a wrapping layer 8 is arranged outside the cable core and the filling 7, a flame-retardant layer I9 is arranged outside the cable core 8, the flame-retardant layer I9 is a high flame-retardant polyethylene layer, a braided layer 10 is arranged outside the flame-retardant layer I9, four humidity-sensitive insulated wire cores are embedded into the braided layer 10 and are divided into two symmetrical groups, each group of two cores is arranged in a close manner, each humidity-sensitive insulated wire core comprises a conductor 11, a humidity-sensitive insulating layer 12 is arranged outside the conductor 11, a water blocking rope 13 is arranged on each of two sides of each humidity-sensitive insulated wire core, each water blocking rope 13 is also embedded into the braided layer 10, a flame-retardant layer II 14 is arranged outside the braided layer 10, the flame-retardant layer II 14 is a low-smoke halogen-free A-level flame-retardant polyolefin layer, an outer sheath 15 is arranged outside the flame-retardant layer II 14, and the outer sheath 15 is a polyolefin outer sheath. The utility model has reasonable overall structure arrangement, the carbon nano tube fiber bundle is added in the copper or aluminum divided conductor, the conductive property of the carbon nano tube fiber bundle is far higher than that of a metal conductor such as copper or aluminum, the current carrying capacity is improved, the skin effect of the conductor is weakened, the current is more uniformly distributed in the conductor, the fluoroplastic insulating layer is adopted, the insulating effect is good, the flame retardant layer I and the flame retardant layer II are adopted, the overall flame retardant effect is good, three moisture-sensitive insulating wire cores are embedded in the weaving layer, the water blocking rope is a hydrophilic water blocking material, when moisture enters from the outside, more water is gathered in the water blocking rope, the water blocking rope is close to the moisture-sensitive insulating layer, the moisture-sensitive insulating layer can adsorb the moisture and sense the moisture, the resistivity of the insulating layer can be changed along with the moisture, the moisture-sensitive insulating layer adopts styrene polymer with strong polar groups to be copolymerized with acrylic acid and crosslinked, and when the insulating material encounters the moisture, the water molecules are adsorbed by polar groups, more and more water molecules are condensed to form liquid water, the insulating material loses efficacy and becomes electrolyte solution capable of conducting electricity, so that the two insulating wire cores are conducted, larger current is introduced to dissipate heat, moisture is taken away, the product is matched with each layer, the operation is stable and reliable, the whole service life is long, and the practical use requirements are met.

The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.

Claims

1. An improved high-performance flame-retardant cable is characterized in that: the cable comprises a carbon nano tube fiber bundle (1) formed by stranding at the center of a cable, wherein a circular structure conductor consisting of five groups of separation conductors (2) is arranged outside the carbon nano tube fiber bundle (1), an insulating tape (3) is arranged between the separation conductors (2), a conductor shielding layer (4) is arranged outside the circular structure conductor, a fluoroplastic insulating layer (5) is arranged outside the conductor shielding layer (4), an insulating shielding layer (6) is arranged outside the fluoroplastic insulating layer (5) and forms an insulating wire core, a plurality of insulating wire cores are tangentially arranged to form a cable core, a filling layer (7) is arranged in a cable core gap, a winding layer (8) is arranged outside the cable core and the filling layer (7), a flame-retardant layer I (9) is arranged outside the winding layer (8), a woven layer (10) is arranged outside the flame-retardant layer I (9), and four wet-sensitive insulating wire cores are embedded in the woven layer (10), the moisture-sensitive insulation cable core comprises conductors (11), a moisture-sensitive insulation layer (12) is arranged outside the conductors (11), a water blocking rope (13) is arranged on each of two sides of each moisture-sensitive insulation cable core, the water blocking ropes (13) are also embedded into a woven layer (10), a flame-retardant layer II (14) is arranged outside the woven layer (10), and an outer sheath (15) is arranged outside the flame-retardant layer II (14).

2. The improved high performance flame retardant cable of claim 1 wherein: the flame-retardant layer I (9) is a high-flame-retardant polyethylene layer.

3. The improved high performance flame retardant cable of claim 1 wherein: the flame-retardant layer II (14) is a low-smoke halogen-free A-level flame-retardant polyolefin layer.

4. The improved high performance flame retardant cable of claim 1 wherein: the outer sheath (15) is a polyolefin outer sheath.