Environment-friendly flame-retardant anti-interference cable

Abstract

The invention discloses an environment-friendly flame-retardant anti-interference cable, which comprises a plurality of mutually combined cable conductors, the cable conductors are made of high-purity copper or aluminum, the outer surfaces of the plurality of cable conductors are tightly wrapped with cable insulating layers, and the cable insulating layers are filled between two adjacent cable conductors to ensure the electrical insulation among the plurality of cable conductors. A metal shielding layer is woven on the outer surface of the cable insulating layer and used for shielding external electromagnetic interference, a non-metal shielding layer is wrapped on the outer surface of the metal shielding layer and used for further enhancing the shielding effect, an environment-friendly filling layer is filled between the cable insulating layer and the metal shielding layer, and a cable outer sheath layer is wrapped on the outer surface of the non-metal shielding layer and used for further enhancing the shielding effect. According to the invention, the cable conductor can be conveniently protected, the anti-electromagnetic interference capability of the cable main body is improved, the cable main body can rapidly play a flame-retardant role when encountering a fire source, and the pollution to the environment is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to an environmentally friendly flame-retardant and anti-interference cable. Background Art

[0002] With the rapid development of modern science and technology, the number of electrical equipment and communication systems continues to rise, and the use of cables has also increased dramatically. However, traditional cables have many disadvantages. First, many traditional cables have poor flame retardant properties. When a fire occurs, they are very easy to burn and release a large amount of toxic smoke, which will not only accelerate the spread of the fire, but also pose a serious threat to the safety of personnel and life, and cause great harm to the environment. Second, when transmitting signals, cables are often subject to external electromagnetic interference, which greatly reduces the quality of signal transmission and affects the normal operation of the equipment. Third, the materials used in some cables are not environmentally friendly, difficult to degrade after being discarded, and pollute the soil and water sources for a long time. Therefore, it has become a top priority to develop an environmentally friendly flame retardant and anti-interference cable. Summary of the invention

[0003] In order to solve the problems of poor flame retardant performance, weak anti-interference ability and environmental pollution of existing cables, the present invention provides an environmentally friendly flame retardant and anti-interference cable.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an environmentally friendly flame-retardant anti-interference cable, comprising a plurality of cable conductors combined with each other, the cable conductors are made of high-purity copper or aluminum, the outer surfaces of the plurality of cable conductors are tightly wrapped with a cable insulation layer, the cable insulation layer is filled between two adjacent cable conductors to ensure the electrical insulation between the plurality of cable conductors, the outer surface of the cable insulation layer is woven with a metal shielding layer for shielding external electromagnetic interference, and the outer surface of the metal shielding layer is coated with a non-metallic shielding layer for further enhancing the shielding effect;

[0005] An environmentally friendly filling layer is filled between the cable insulation layer and the metal shielding layer, and the outer surface of the non-metallic shielding layer is wrapped with a cable outer sheath layer, which is used to protect the internal structure of the cable from external mechanical damage, chemical corrosion and environmental factors. A reinforcement component is also installed on the outer surface of the cable insulation layer to support multiple combined cable conductors.

[0006] Preferably, the reinforcement component is composed of a plurality of limit sleeves, and the plurality of limit sleeves are sleeved on the outer surface of the cable insulation layer at a certain interval, the interval between two adjacent limit sleeves is not less than 1m, and the inner wall of the limit sleeve is tightly attached to the outer surface of the cable insulation layer.

[0007] Preferably, the cable insulation layer is made of environmentally friendly cross-linked polyethylene XLPE material.

[0008] Preferably, the metal shielding layer is woven from tinned copper wires, and the weaving density of the tinned copper wires is not less than 85%.

[0009] Preferably, the non-metallic shielding layer is made of nano-carbon fiber composite material.

[0010] Preferably, the environmentally friendly filling layer adopts an environmentally friendly inorganic flame retardant material such as aluminum hydroxide.

[0011] Preferably, the cable outer sheath layer is made of environmentally friendly low-smoke halogen-free flame-retardant polyolefin material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The cable insulation layer, environmentally friendly filling layer and cable outer sheath layer are all made of environmentally friendly materials. Among them, the cable insulation layer material can be slowly degraded in the natural environment, the cable filling layer material does not produce toxic and harmful gases when burned, and the cable sheath layer material produces less smoke and low toxicity when burned, which effectively reduces the pollution to the environment and meets the requirements of sustainable development.

[0014] 2. Through the cooperation of the inorganic flame retardant material of the cable filling layer and the low-smoke halogen-free flame retardant polyolefin material of the cable sheath layer, the cable body can quickly play a flame retardant role when encountering a fire source, effectively preventing the spread of flames, reducing fire hazards, and buying precious time for personnel escape and fire fighting.

[0015] 3. The double shielding design of metal shielding layer and non-metal shielding layer greatly improves the anti-electromagnetic interference ability of the cable body, ensuring stable and reliable signal transmission quality, which is particularly suitable for communications, electronic equipment and other fields with high signal requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the cross-sectional structure of the cable conductor in the present invention;

[0019] Figure 3 It is a schematic structural diagram of the limiting sleeve in the present invention.

[0020] Serial numbers in the figure: 1. Cable conductor; 2. Cable insulation layer; 3. Limiting sleeve; 4. Metal shielding layer; 5. Non-metal shielding layer; 6. Environmentally friendly filling layer; 7. Cable outer sheath layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example: See Figure 1-3 An environmentally friendly flame-retardant and anti-interference cable comprises a plurality of cable conductors 1 combined with each other, the cable conductors 1 are made of high-purity copper or aluminum, the outer surfaces of the plurality of cable conductors 1 are tightly wrapped with a cable insulation layer 2, the cable insulation layer 2 is filled between two adjacent cable conductors 1, and the electrical insulation between the plurality of cable conductors 1 is ensured, the outer surface of the cable insulation layer 2 is woven with a metal shielding layer 4 for shielding external electromagnetic interference, and the outer surface of the metal shielding layer 4 is covered with a non-metallic shielding layer 5 for further enhancing the shielding effect;

[0023] An environmentally friendly filling layer 6 is filled between the cable insulation layer 2 and the metal shielding layer 4, and the outer surface of the non-metallic shielding layer 5 is wrapped with a cable outer sheath layer 7, which is used to protect the internal structure of the cable from external mechanical damage, chemical corrosion and environmental factors. A reinforcement component is also installed on the outer surface of the cable insulation layer 2 to support multiple combined cable conductors 1.

[0024] In the present invention, the reinforcement component is composed of a plurality of limit sleeves 3, and a plurality of limit sleeves 3 are sleeved on the outer surface of the cable insulation layer 2 at a certain interval. The interval between two adjacent limit sleeves 3 is not less than 1m, and the inner wall of the limit sleeve 3 is tightly attached to the outer surface of the cable insulation layer 2.

[0025] The cable conductors 1 are protected by a plurality of limiting sleeves 3 , so that the plurality of combined cable conductors 1 are connected and fastened by the plurality of limiting sleeves 3 , thereby demonstrating the connection stability of the plurality of cable conductors 1 .

[0026] In the present invention, the cable insulation layer 2 is made of environmentally friendly cross-linked polyethylene XLPE material, which can effectively prevent leakage and short circuit phenomena, and has good chemical corrosion resistance and mechanical strength. It can be slowly degraded in the natural environment, which is in line with the concept of environmental protection. In the application of low-voltage cables, the thickness of the insulation layer is usually between 0.6 mm and 1.5 mm, in the application of medium-voltage cables, the thickness of the insulation layer is usually between 1.5 mm and 3 mm, in the application of high-voltage cables, the thickness of the insulation layer is usually between 3 mm and 10 mm, and in the application of ultra-high voltage cables, the thickness of the insulation layer can usually reach 10 mm to 20 mm, ensuring that the electrical insulation performance between conductors reaches the best state. .

[0027] In the present invention, the metal shielding layer 4 is woven from tinned copper wires, and the weaving density of the tinned copper wires is not less than 85%. The tinned copper wires can effectively shield external electromagnetic interference, providing a solid guarantee for the stable transmission of signals in the cable.

[0028] In the present invention, the non-metallic shielding layer 5 is made of nano-carbon fiber composite material, which has good conductivity and antistatic properties, and can further enhance the shielding effect. At the same time, it itself has certain flame retardant properties, which helps to improve the overall flame retardant ability of the cable.

[0029] In the present invention, the environmentally friendly filling layer 6 adopts an environmentally friendly inorganic flame retardant material, aluminum hydroxide. Aluminum hydroxide will undergo a decomposition reaction in a high temperature environment, absorb a large amount of heat and release water vapor, thereby achieving the effect of flame retardancy and cooling, and no toxic or harmful gases will be generated during the combustion process. It is filled in the gaps between the cable insulation layer 2 and the metal shielding layer 4 and between multiple conductors, playing a supporting, fixing and buffering role, while further enhancing the flame retardant properties of the cable.

[0030] In the present invention, the cable outer sheath layer 7 is made of an environmentally friendly low-smoke halogen-free flame-retardant polyolefin material. The environmentally friendly low-smoke halogen-free flame-retardant polyolefin material produces very little smoke and has very low toxicity when burned, meeting the dual requirements of environmental protection and fire safety. The cable outer sheath layer 7 is tightly wrapped around the outside of the non-metallic shielding layer 5, and has good wear resistance, weather resistance and flexibility, and can effectively protect the internal structure of the cable body from external mechanical damage, chemical corrosion and various environmental factors.

[0031] Working principle: In this embodiment, the present invention also proposes a method for using an environmentally friendly flame-retardant anti-interference cable, including the following working principles:

[0032] In the construction of communication base stations, a large number of cables are used to connect base station equipment with antennas and other components. When the environmentally friendly flame-retardant and anti-interference cable of the present invention is applied to this scenario, the cable conductor 1 efficiently transmits communication signals by virtue of its high conductivity, the cable insulation layer 2 tightly wraps the conductor to ensure the electrical insulation safety during signal transmission, the metal shielding layer 4 and the non-metallic shielding layer 5 work together to effectively block electromagnetic interference in the surrounding environment and ensure clear and stable transmission of signals. When a fire occurs near the base station, the flame retardant properties of the cable immediately take effect, the inorganic flame retardant material of the environmentally friendly filling layer 6 quickly decomposes and absorbs heat, and the cable outer sheath layer 7 prevents the spread of flames, reduces the generation of toxic smoke, avoids further damage to the base station equipment, and reduces pollution to the surrounding environment.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmentally friendly flame-retardant and anti-interference cable, comprising a plurality of cable conductors (1) combined with each other, characterized in that: The cable conductor (1) is made of high-purity copper or aluminum; the outer surfaces of the plurality of cable conductors (1) are tightly wrapped with a cable insulation layer (2); the cable insulation layer (2) is filled between two adjacent cable conductors (1) to ensure electrical insulation between the plurality of cable conductors (1); the outer surface of the cable insulation layer (2) is woven with a metal shielding layer (4) for shielding external electromagnetic interference; the outer surface of the metal shielding layer (4) is coated with a non-metallic shielding layer (5) for further enhancing the shielding effect; An environmentally friendly filling layer (6) is filled between the cable insulation layer (2) and the metal shielding layer (4), and the outer surface of the non-metallic shielding layer (5) is wrapped with a cable outer sheath layer (7) for protecting the internal structure of the cable from external mechanical damage, chemical corrosion and environmental factors. A reinforcement component is also installed on the outer surface of the cable insulation layer (2) for supporting a plurality of combined cable conductors (1).

2. The environmentally friendly flame-retardant and anti-interference cable according to claim 1 is characterized in that: The reinforcement component is composed of a plurality of limiting sleeves (3), wherein the plurality of limiting sleeves (3) are sleeved on the outer surface of the cable insulation layer (2) at a certain interval, the interval between two adjacent limiting sleeves (3) is not less than 1 m, and the inner wall of the limiting sleeve (3) is tightly attached to the outer surface of the cable insulation layer (2).

3. The environmentally friendly flame-retardant and anti-interference cable according to claim 1 is characterized in that: The cable insulation layer (2) is made of environmentally friendly cross-linked polyethylene (XLPE) material.

4. The environmentally friendly flame-retardant and anti-interference cable according to claim 1, characterized in that: The metal shielding layer (4) is woven from tinned copper wires, and the weaving density of the tinned copper wires is not less than 85%.

5. The environmentally friendly flame-retardant and anti-interference cable according to claim 4 is characterized in that: The non-metallic shielding layer (5) is made of nano-carbon fiber composite material.

6. The environmentally friendly flame-retardant and anti-interference cable according to claim 1, characterized in that: The environmentally friendly filling layer (6) is made of an environmentally friendly inorganic flame retardant material, namely aluminum hydroxide.

7. The environmentally friendly flame-retardant and anti-interference cable according to claim 1, characterized in that: The cable outer sheath layer (7) is made of an environmentally friendly low-smoke, halogen-free, flame-retardant polyolefin material.

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