CN216287673U

CN216287673U - High-temperature-resistant, corrosion-resistant and flame-retardant composite cable

Info

Publication number: CN216287673U
Application number: CN202122670873.1U
Authority: CN
Inventors: 杨培生
Original assignee: Chongde Group Co ltd
Current assignee: Chongde Group Co ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-04-12
Anticipated expiration: 2031-11-03

Abstract

The utility model discloses a high-temperature-resistant, corrosion-resistant and flame-retardant composite cable, which comprises a reinforcing core at the axis and cable cores arranged in a regular triangle at the outer side, wherein an inner protective layer is arranged at the outer side of each cable core, the inner protective layer sequentially comprises a shielding layer, an insulating layer and polyethylene resin from inside to outside, a triangular supporting layer is arranged at the outer side of the inner protective layer, rubber columns are arranged at edges and corners of the supporting layer, a plurality of air holes are uniformly formed in the supporting layer, so that the heat dissipation from inside to outside is facilitated, a glass fiber layer is arranged at the outer side of the supporting layer, and a moisture-proof layer, an armor layer, a heat-insulating layer and an insulating sheath are sequentially arranged at the outer side of the glass fiber layer.

Description

High-temperature-resistant, corrosion-resistant and flame-retardant composite cable

Technical Field

The utility model relates to the technical field of cables, in particular to a high-temperature-resistant, corrosion-resistant and flame-retardant composite cable.

Background

A cable is typically a rope-like material made up of several twisted sets of conductors, each set insulated from the other and often twisted around a center, and covered with a highly insulating covering, usually overhead or installed underground, underwater, for telecommunication or power transmission.

With the development of society, the number of cables used as transmission media is also increasing, and thus, the requirements for cables are also increasing. In order to ensure the normal and stable operation of the cable, the cable needs to have basic safety performance, such as wear resistance, flame retardancy, fire resistance, etc., however, some existing cables have different corresponding safety performance due to different uses, such as some cables with flame retardancy, which have weak tensile strength and are easy to deform, and poor heat dissipation performance cannot quickly dissipate heat generated by wires in the cable, thereby resulting in high temperature of the whole cable. Therefore, the utility model provides a high-temperature-resistant, corrosion-resistant and flame-retardant composite cable to solve the problems in the background art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature-resistant, corrosion-resistant and flame-retardant composite cable to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a fire-retardant type composite cable of high temperature resistant anticorrosive, is the cable core that regular triangle set up including the enhancement core and the outside of axis department, the outside of cable core is equipped with the inner protective layer, the outside of inner protective layer is equipped with triangular's supporting layer, and the edges and corners department of supporting layer is equipped with glues the post, the outside of supporting layer is equipped with the glass fiber layer, and the outside of glass fiber layer is equipped with dampproof course, armour layer, insulating layer and insulating sheath in proper order, the outside of supporting layer is equipped with the fire-retardant fire tube that separates of three inflation, and the fire-retardant fire tube that separates of inflation is located between two gluey posts.

As a further scheme of the utility model, the inner protection layer comprises the shielding layer, the insulating layer and the polyethylene resin from inside to outside in sequence, and the polyethylene resin can effectively provide reliable wear resistance and insulation for the cable core, so that the occurrence of electric leakage can be effectively avoided, the safety protection capability of the cable is improved, and the mutual interference between the cable cores is avoided.

As a further scheme of the utility model, a plurality of air holes are uniformly formed in the supporting layer, so that the heat dissipation inside and outside is facilitated.

As a further aspect of the present invention, the insulating sheath is made of a halogen-free polyolefin sheath.

In a still further aspect of the present invention, the intumescent fire retardant insulating tube is filled with an intumescent graphite composite material.

In a still further aspect of the present invention, an inorganic heat-resistant material is filled between the glass fiber layer and the inner protective layer, and the inorganic heat-resistant material is made of magnesium oxide powder or aluminum oxide powder.

As a further scheme of the utility model, a plurality of support columns are fixed in the expansion flame-retardant fire-proof pipe and are used for expanding the cavity of the expansion flame-retardant fire-proof pipe.

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

the tensile property of the cable is enhanced by utilizing the reinforced core, the supporting layer in the cable plays a role in supporting and protecting, and the expansion flame-retardant fire-isolating pipe can play a role in heat insulation when the cable is at a high temperature or is burnt outside.

Drawings

Fig. 1 is a schematic cross-sectional structure view of a first embodiment of a high temperature resistant, corrosion resistant, and flame retardant composite cable.

Fig. 2 is a schematic structural diagram of a support layer in an embodiment of a high temperature resistant, corrosion resistant and flame retardant composite cable.

Fig. 3 is a schematic cross-sectional structure view of an embodiment two of the high temperature resistant, corrosion resistant and flame retardant composite cable.

FIG. 4 is a schematic structural view of a secondary intumescent flame retardant fire barrier tube in an embodiment of a high temperature resistant, corrosion resistant and flame retardant composite cable.

In the figure: 1. a cable core; 2. an inner protective layer; 3. a reinforcing core; 4. a support layer; 5. glue columns; 6. an intumescent flame retardant fire barrier tube; 7. an inorganic heat-resistant material; 8. a moisture barrier; 9. an armor layer; 10. a thermal insulation layer; 11. a glass fiber layer; 12. an insulating sheath.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example one

Referring to fig. 1-2, in the embodiment of the utility model, a high-temperature-resistant, corrosion-resistant and flame-retardant composite cable includes a reinforcing core 3 at an axis and a cable core 1 arranged in a regular triangle at an outer side, an inner protective layer 2 is arranged at the outer side of the cable core 1, the inner protective layer 2 sequentially includes a shielding layer, an insulating layer and polyethylene resin from inside to outside, the polyethylene resin can effectively provide reliable wear resistance and insulation for cable cores, so that electric leakage can be effectively avoided, safety protection capability of the cable is improved, and mutual interference between the cable cores is avoided, a triangular support layer 4 is arranged at the outer side of the inner protective layer 2, rubber columns 5 are arranged at edges of the support layer 4, and a plurality of air holes are uniformly formed in the support layer 4, so that internal and external heat dissipation is facilitated.

The outer side of the supporting layer 4 is provided with a glass fiber layer 11, the outer side of the glass fiber layer 11 is sequentially provided with a moisture-proof layer 8, an armor layer 9, a heat-insulating layer 10 and an insulating sheath 12, the insulating sheath 12 is formed by a halogen-free polyolefin sheath, the outer side of the supporting layer 4 is provided with three expansion flame-retardant fire-isolating pipes 6, the expansion flame-retardant fire-isolating pipes 6 are positioned between two rubber columns 5, the expansion flame-retardant fire-isolating pipes 6 are filled with an expansion graphite synthetic material, when a cable is in high temperature or is burnt outside, the cable starts to expand when the temperature reaches 220 ℃, and rapidly expands at 230-280 ℃ and fills the whole expansion flame-retardant fire-isolating pipes 6. The maximum expansion volume is reached at 1100 ℃, and the maximum expansion volume can be 280 times of the original volume. The expanded graphite is changed into a worm shape from the original flake shape, fills the whole cavity and forms a very good heat insulation layer, an inorganic heat-resistant material 7 is filled between the glass fiber layer 11 and the inner protection layer 2, and the inorganic heat-resistant material 7 is formed by magnesium oxide powder or aluminum oxide powder.

Example two

Referring to fig. 3 to 4, in the embodiment of the present invention, a plurality of support pillars are fixed in the intumescent flame retardant fire-barrier tube 6 for expanding the cavity thereof and enhancing the toughness thereof.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a fire-retardant type composite cable of high temperature resistant anticorrosive, is cable core (1) that regular triangle set up including strengthening core (3) and the outside of axis department, its characterized in that, the outside of cable core (1) is equipped with inner protective layer (2), the outside of inner protective layer (2) is equipped with triangular supporting layer (4), and the edges and corners department of supporting layer (4) is equipped with glues post (5), the outside of supporting layer (4) is equipped with glass fiber layer (11), and the outside of glass fiber layer (11) is equipped with dampproof course (8), armor layer (9), insulating layer (10) and insulating sheath (12) in proper order, the outside of supporting layer (4) is equipped with three inflation fire-retardant fire tubes (6) that separate, and inflation fire-retardant tube (6) that separate is located between two gluey posts (5).

2. The high temperature resistant, corrosion resistant and flame retardant composite cable according to claim 1, wherein the inner protective layer (2) comprises a shielding layer, an insulating layer and polyethylene resin in sequence from inside to outside.

3. The high temperature resistant, corrosion resistant and flame retardant composite cable according to claim 1, wherein the supporting layer (4) is uniformly provided with a plurality of air holes.

4. The high temperature resistant, corrosion resistant and flame retardant composite cable according to claim 1, wherein the insulating sheath (12) is made of halogen-free polyolefin sheath.

5. The composite cable of claim 1, wherein the intumescent flame retardant fire retardant tube (6) is filled with an intumescent graphite composite.

6. The high-temperature-resistant, corrosion-resistant and flame-retardant composite cable according to claim 1, wherein an inorganic heat-resistant material (7) is filled between the glass fiber layer (11) and the inner protective layer (2), and the inorganic heat-resistant material (7) is made of magnesium oxide powder or aluminum oxide powder.

7. The composite cable of claim 1, wherein a plurality of support columns are fixed in the intumescent flame retardant fire-barrier tube (6).