CN206097993U - Thermal -insulated fire -retardant three -core cables - Google Patents

Abstract

The utility model discloses a heat-insulating and flame-retardant three-core cable, which comprises a filling layer and three conductors, the three conductors are all wrapped with a fire-resistant mica layer, the fire-resistant mica layer is wrapped with a foaming layer, and the foaming layer is wrapped with an insulating layer , the finished three conductors after wrapping the insulating layer are distributed in the filling layer to form the cable core together. The filling layer is provided with a Y-shaped steel bar in cross section, and the Y-shaped steel bar isolates the three conductors respectively; the filling layer is equipped with A plurality of carbon fiber composite core wires, each carbon fiber composite core wire is bundled by a plurality of carbon fiber filaments, and an insulating tube is wrapped on the outer layer of each carbon fiber composite core wire; the cable core is wrapped with a CPP tightening tape layer; A braided copper mesh layer is arranged outside the CPP tightening belt layer; a heat insulation layer, an asphalt coating, a steel belt layer, glass fiber and an outer protective layer are arranged outside the braided copper mesh layer in sequence. The cable can make the cable have the characteristics of anti-rat and ant-proof, super tensile strength, fire prevention, high temperature resistance, etc., so that the cable can work stably for a long time when it is buried in the ground.

Description

A heat-insulated and flame-retardant three-core cable

technical field

The utility model relates to the technical field of cables, in particular to a heat-insulating and flame-retardant three-core cable.

Background technique

Cables refer to materials used for power, communication and related transmission purposes. With the development of society, there are more and more applications and occasions for cables, and the requirements for cables are getting higher and higher. Due to the harsh application environment of underground cables, it is necessary to have the characteristics of rodent and termite resistance, tensile strength, torsion resistance, high mechanical stress resistance, waterproof, flame retardant, oxidation resistance, high temperature resistance, etc., which are technical problems that need to be solved in this field.

Utility model content

The purpose of the utility model is to provide a heat-insulating and flame-retardant three-core cable to solve the deficiencies of the prior art.

For realizing the utility model purpose, the technical scheme that adopts is:

A heat-insulating and flame-retardant three-core cable, characterized in that it includes a filling layer and three conductors, the three conductors are all wrapped with a fire-resistant mica layer, the fire-resistant mica layer is wrapped with a foam layer, and the foam layer is wrapped with an insulating layer. The finished three conductors after wrapping the insulating layer are distributed in the filling layer to form the cable core together. The filling layer is provided with a Y-shaped steel bar, and the Y-shaped steel bar isolates the three conductors respectively; the filling layer is provided with multiple A carbon fiber composite core wire, each carbon fiber composite core wire is bundled by a plurality of carbon fiber filaments, and an insulating tube is wrapped on the outer layer of each carbon fiber composite core wire; the cable core is wrapped with a CPP tightening tape layer; the A braided copper mesh layer is arranged outside the CPP tightening belt layer; a heat insulation layer, an asphalt coating, a steel belt layer, a glass fiber layer and an outer protective layer are sequentially arranged outside the braided copper mesh layer.

Further, the heat insulation layer is formed by winding the rock wool rope outside the carbon fiber bundle layer, and extruding ceramic silicon rubber into the gap between the rock wool rope; this setting makes full use of the fire prevention of ceramic silicon rubber and the insulation of rock wool The thermal performance makes the fire prevention and high temperature resistance performance of the utility model reach the best.

Further, the refractory mica layer has a good fireproof effect.

Further, the material of the foam layer and the insulating layer are PE and LCP respectively. The insulation layer and the foam layer can increase the compressive capacity and reduce the mutual interference between the cable cores. The materials used are relatively heat-resistant and have poor thermal conductivity, which can reduce the influence of the ambient temperature on the cable.

Further, the material of the filling layer is water-blocking yarn, so that the cable has good water-blocking performance.

Further, the steel strip layer has properties such as tensile resistance, torsion resistance, and high mechanical stress resistance, which can prevent the cable from bending and deformation.

Further, the braided copper mesh layer is composed of silver-plated copper wires connected in a criss-cross pattern.

Further, the material of the outer sheath is LCP.

The beneficial effects of the utility model are:

The three conductors can be separated by the Y-shaped steel bar to prevent the three conductors from contacting or interfering with each other, thereby damaging the cable. The Y-shaped steel strip can increase the super tensile strength, torsion resistance and high mechanical stress resistance of the entire cable.

Oxidation of the cable is effectively protected by the bituminous coating.

Through the carbon fiber bundle layer, the carbon fiber bundle layer can well convert electrical energy into heat energy, effectively improving the low temperature resistance of the cable, and can be used normally in alpine regions.

The signal transmission capability of the signal cable is improved through the silver-plated braided copper mesh layer. The silver-plated layer of the silver-plated braided copper mesh layer further enhances the anti-interference ability and signal transmission ability of the signal cable signal, further avoids signal attenuation, and the electrical performance of the conductor is more excellent. , The signal cable can carry out long-distance transmission operations.

The glass fiber layer prevents the mice from chewing on the cable, avoiding the risk of the cable being damaged by the mouse.

The utility model can make the cable have the characteristics of anti-rat and anti-ant, super strong tensile force, torsion resistance, high mechanical stress resistance, waterproof, fireproof, high temperature resistance, etc., thereby improving the reliability and stability of the cable when it is buried in the ground for a long time sex.

Description of drawings

Fig. 1 is a structural schematic diagram of the heat-insulating and flame-retardant three-core cable provided by the utility model.

detailed description

The utility model will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

Figure 1 shows the heat-insulating and flame-retardant three-core cable provided by the utility model, including a filling layer 5, three conductors 1, a refractory mica layer 2, a foaming layer 3, an insulating layer 4, a filling layer 5, Y Zigzag steel bar 7, carbon fiber composite core wire 9, insulating tube 10, CPP tightening tape layer 6, braided copper mesh layer 13, heat insulation layer 8, asphalt coating 12, steel belt layer 11, glass fiber layer 14 and outer sheath Layer 15; a heat-insulating and flame-retardant three-core cable, including a filling layer 5 and three conductors 1, the three conductors 1 are all wrapped with a fire-resistant mica layer 2, the fire-resistant mica layer 2 is wrapped with a foam layer 3, and the foam layer 3 is wrapped There is an insulating layer 4, and the finished three conductors after wrapping the insulating layer 4 are distributed in the filling layer 5 to form a cable core. The filling layer 5 is provided with a Y-shaped steel bar 7, and the Y-shaped steel bar 7 separates the three conductors. Isolation; the filling layer 5 is provided with a plurality of carbon fiber composite core wires 9, each carbon fiber composite core wire 9 is bundled by a plurality of carbon fiber filaments, and an insulating tube 10 is wrapped on the outer layer of each carbon fiber composite core wire 9 ; The cable core is wrapped with a CPP tie layer 6; the CPP tie layer 6 is provided with a braided copper mesh layer 13; layer 12, steel belt layer 11, glass fiber layer 14 and outer sheath 15.

The heat insulation layer 8 is formed by winding the rock wool rope outside the carbon fiber bundle layer, and extruding ceramic silicone rubber into the gap between the rock wool rope; this setting makes full use of the fire prevention of ceramic silicone rubber and the heat insulation performance of rock wool , so that the fire prevention and high temperature resistance performance of the utility model can reach the best.

The refractory mica layer 2 has a good fireproof effect.

The foam layer 3 is made of PE. The material of the insulating layer 4 is LCP. The insulation layer 4 and the foam layer 3 can increase the compressive capacity and reduce the mutual interference between the cable cores. The materials used are relatively heat-resistant and have poor thermal conductivity, which can reduce the influence of the ambient temperature on the cables.

The material of the filling layer 5 is water-blocking yarn, so that the cable has good water-blocking performance.

The steel strip layer 11 has properties such as tensile resistance, torsion resistance, and high mechanical stress resistance, and can prevent the cable from bending and deforming.

The braided copper mesh layer 13 is composed of silver-plated copper wires connected in a criss-cross pattern; the outer sheath layer 15 is made of LCP.

The finished three conductors can be separated by the Y-shaped steel bar 7 to prevent the three conductors from contacting or interfering with each other, thereby damaging the cable. Through the Y-shaped steel bar 7, the super tensile strength, torsion resistance and high mechanical stress resistance of the entire cable can be improved.

Oxidation of the cable can be effectively prevented by the bitumen coating 12 .

Through the carbon fiber bundle layer, the carbon fiber bundle layer can well convert electrical energy into heat energy, effectively improving the low temperature resistance of the cable, and can be used normally in alpine regions.

The signal transmission capability of the signal cable is improved through the silver-plated braided copper mesh layer 13, and the silver-plated layer of the silver-plated braided copper mesh layer 13 further enhances the anti-interference ability and signal transmission capability of the signal cable signal, further avoids signal attenuation, and improves the electrical performance of the conductor. Even better, the signal cable can carry out long-distance transmission operations.

The glass fiber layer 14 prevents the mice from chewing on the cables, avoiding the risk of the cables being damaged by the mice.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (6)

1. A heat-insulating and flame-retardant three-core cable, characterized in that it includes a filling layer and three conductors, the three conductors are wrapped with a fire-resistant mica layer, the fire-resistant mica layer is wrapped with a foam layer, and the foam layer is wrapped with an insulating layer. Layer, the finished three conductors after wrapping the insulation layer are distributed in the filling layer to form the cable core together. The filling layer is equipped with a Y-shaped steel bar, and the Y-shaped steel bar isolates the three conductors respectively; the filling layer is equipped with There are multiple carbon fiber composite core wires, and each carbon fiber composite core wire is bundled by a plurality of carbon fiber filaments, and an insulating tube is wrapped on the outer layer of each carbon fiber composite core wire; the cable core is wrapped with a CPP tightening tape layer ; The CPP tie layer is provided with a woven copper mesh layer; the woven copper mesh layer is provided with a heat insulation layer, an asphalt coating, a steel belt layer, a glass fiber layer and an outer protective layer in sequence. 2. A heat-insulating and flame-retardant three-core cable according to claim 1, wherein the heat-insulating layer is wound outside the oxygen-barrier layer by a rock wool rope, and the rock wool is extruded by vitrified silicon rubber. A rope gap is formed. 3. The heat-insulating and flame-retardant three-core cable according to claim 1, wherein the foam layer is made of PE. 4. The heat-insulating and flame-retardant three-core cable according to claim 1, wherein the material of the filling layer is water-blocking yarn. 5. The heat-insulating and flame-retardant three-core cable according to claim 1, wherein the materials of the insulating layers are LCP. 6. The heat-insulating and flame-retardant three-core cable according to claim 1, wherein the material of the outer sheath is LCP.