Electric wire and cable with good electrical interference prevention and flame retardant effects

Abstract

The utility model discloses a wire cable with good anti-electrical interference and flame retardant effects, which relates to the technical field of cables and comprises a cable body, a plurality of wire cores are arranged in the cable body, an insulating layer is mounted on the outer wall of each wire core, a shielding layer is mounted on the outer wall of each insulating layer, a filling layer is connected among the plurality of shielding layers, and the filling layers are arranged in the cable body. The insulating layer is made of crosslinked polyethylene, and the shielding layer is made of an aluminum-based composite material; according to the utility model, the insulating layer effectively isolates current, prevents leakage, ensures personal safety and optimizes current transmission, and the aluminum matrix composite material is used as the shielding layer, so that the cable is light and efficient, can reduce electromagnetic interference, has good flexibility, and prevents the cable body from being broken due to bending.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an electric wire and cable with good electrical interference prevention and flame retardant effect. Background Art

[0002] Wires and cables are wire products used to transmit electromagnetic energy, information and realize electromagnetic energy conversion.

[0003] In the prior art, nickel-clad copper, tin-plated copper mesh and iron-nickel alloy are used to isolate external electromagnetic interference, thereby enhancing the ability of wires and cables to prevent electrical interference. However, nickel-clad copper, tin-plated copper mesh and iron-nickel alloy are not only expensive, but also increase the weight of the cable and affect the flexibility of the cable. Cables with poor flexibility are more easily damaged when subjected to external forces, which may cause the cable to break or degrade its performance. Utility Model Content

[0004] The utility model aims to provide an electric wire and cable with good anti-electrical interference and flame retardant effect, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides a wire and cable with good anti-electrical interference and flame retardant effect, including a cable body, wherein a plurality of wire cores are arranged in the cable body, an insulating layer is installed on the outer wall of the wire core, a shielding layer is installed on the outer wall of the insulating layer, and a filling layer is connected between the plurality of shielding layers, the insulating layer is made of cross-linked polyethylene, and the shielding layer is made of an aluminum-based composite material.

[0006] Furthermore, the plurality of wire cores are spirally arranged inside the cable body, and the outer walls of the plurality of shielding layers are closely attached to each other.

[0007] Furthermore, a protective layer is installed on the outer wall of the filling layer, a protective layer is fixed on the outer wall of the protective layer, and a flame retardant layer is installed on the outer wall of the protective layer.

[0008] Furthermore, an outer protective layer is installed on the outer wall of the flame retardant layer, the flame retardant layer is a halogen-containing flame retardant material, and the material of the outer protective layer is high-density polyethylene.

[0009] Furthermore, the filling layer is made of silica gel.

[0010] Furthermore, the protective layer and the shielding layer are both made of polyurethane.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the insulating layer effectively isolates the current, prevents leakage, ensures personal safety and optimizes current transmission. The aluminum-based composite material is used as a shielding layer, which is light and efficient, can reduce electromagnetic interference, and has good flexibility to avoid the cable body from breaking due to bending.

[0013] 2. In the utility model, the flame retardant layer can effectively inhibit the spread of cable fire and achieve the flame retardant effect by releasing hydrogen halide to capture active free radicals. The outer sheath is made of high-density polyethylene, which has flexibility, tensile strength, wear resistance and chemical stability, while ensuring the electrical safety of the cable, and is not prone to leakage or electric shock risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the flame retardant layer and the outer protective layer in the utility model;

[0016] Figure 3 for Figure 1 A magnified view of the structure at center A;

[0017] Figure 4 for Figure 2 A magnified view of the structure at point B.

[0018] In the figure: 1. Cable body;

[0019] 2. Wire core; 3. Insulation layer; 4. Shielding layer; 5. Filling layer; 6. Protective layer; 7. Shielding layer; 8. Flame retardant layer; 9. Outer sheath. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0022] See also Figure 1-Figure 4 As shown, a wire and cable with good anti-electrical interference and flame retardant effect includes a cable body 1, a plurality of wire cores 2 are arranged in the cable body 1, an insulating layer 3 is fixedly installed on the outer wall of the wire core 2, a shielding layer 4 is fixedly installed on the outer wall of the insulating layer 3, a filling layer 5 is connected between the plurality of shielding layers 4, the insulating layer 3 is made of cross-linked polyethylene, and the shielding layer 4 is made of aluminum-based composite material.

[0023] The insulating layer 3 made of cross-linked polyethylene insulates the wire core 2. The insulating layer 3 has excellent electrical properties, heat resistance, chemical corrosion resistance and mechanical strength, which can ensure that the current transmitted by the wire core 2 in the cable body 1 does not leak to the outside, guaranteeing the normal transmission function of the wire core 2 and ensuring the safety of external objects and people.

[0024] The insulating layer 3 has excellent voltage resistance under electric field, which means that it can be used in high voltage power transmission lines without being easily broken down. This performance ensures the safe operation of the cable body 1 and the core 2 under high voltage environment. The shielding layer 4 of the aluminum-based composite material, as a light metal, has good conductivity and shielding performance.

[0025] The shielding layer 4 can further optimize its performance by adding other elements or materials. This material is lighter than nickel-clad copper and iron-nickel alloy, while maintaining a good electromagnetic shielding effect, which can reduce electromagnetic interference, ensure the accuracy and stability of signal transmission, and usually has good flexibility to avoid the cable body from breaking due to bending. The filling layer 5 can keep the multiple cores 2 round as a whole, reduce air gaps, and make the connection of the multiple cores 2 more stable, which is beneficial to the deformation of the cable body 1 and adaptability to different environments.

[0026] See also Figure 2-Figure 4 , multiple cores 2 are spirally arranged inside the cable body 1, and the outer walls of multiple shielding layers 4 are tightly attached to each other.

[0027] The spiral design of the multiple cores 2 can improve their overall stability and overall pressure resistance. The outer walls of the multiple shielding layers 4 are tightly attached, making the connection between the multiple shielding layers 4 and the multiple cores 2 tighter.

[0028] See also Figure 2 A protective layer 6 is fixedly installed on the outer wall of the filling layer 5 , a protective layer 7 is fixedly installed on the outer wall of the protective layer 6 , and a flame retardant layer 8 is fixedly installed on the outer wall of the protective layer 7 .

[0029] The protective layer 6 wraps the filling layer 5 inside the cable body 1 to prevent the filling layer 5 from scattering, so that the filling layer 5 and the core 2 can be more closely connected together. The protective layer 7 cooperates with the protective layer 6 to play a protective role, protecting the filling layer 5 from external physical damage, such as extrusion, friction, etc. The main function of the flame retardant layer 8 is to prevent the cable body 1 from burning rapidly under extreme conditions such as fire. It can reduce the burning speed of the cable body 1 and buy more time for personnel evacuation and fire fighting.

[0030] See also Figure 2 The outer wall of the flame retardant layer 8 is fixedly installed with an outer protective layer 9, the flame retardant layer 8 is a halogen-containing flame retardant material, and the material of the outer protective layer 9 is high-density polyethylene.

[0031] The flame retardant layer 8 is made of halogen-containing flame retardant material, which can release hydrogen halide when burning. The hydrogen halide can capture active free radicals HO, thereby delaying or extinguishing the combustion of the material, achieving the purpose of flame retardancy, and can significantly reduce the spread speed of the cable body 1 in the fire, providing valuable time for fire control and personnel evacuation;

[0032] The outer sheath 9 protects the outermost layer of the cable body 1. The outer sheath 9 is made of high-density polyethylene and has excellent tensile strength, material hardness, wear resistance and chemical corrosion resistance. This material not only has good flexibility, but also can withstand higher voltages and is not prone to dangers such as leakage and electric shock, thereby ensuring the electrical safety of the cable body 1.

[0033] See also Figure 2 The material of the filling layer 5 is silica gel.

[0034] The filling layer 5 made of silicone material has good insulation performance and high temperature resistance, and is resistant to acid and alkali corrosion, and is not easy to age and deteriorate. This makes the filling layer 5 suitable for use in high temperature environments, and can improve the flame retardant properties of the cable body 1 to a certain extent. The filling layer 5 itself has a certain flexibility and will not affect the bending resistance of the cable body 1.

[0035] See also Figure 2 The materials of the protective layer 6 and the shielding layer 7 are both polyurethane.

[0036] The protective layer 6 and the shielding layer 7 made of polyurethane can provide better tightness and flexibility when wrapping the filling layer 5, and polyurethane has excellent electrical properties and outstanding electromagnetic shielding properties, such as high insulation and low resistance, which helps to improve the electrical transmission efficiency of the cable body 1 and reduce energy loss. It can also effectively reduce the impact of external electromagnetic interference on power transmission and improve overall stability and reliability.

[0037] Working principle:

[0038] The insulating layer 3 made of cross-linked polyethylene insulates the wire core 2. The insulating layer 3 has excellent electrical properties, heat resistance, chemical corrosion resistance and mechanical strength, which can ensure that the current transmitted by the wire core 2 in the cable body 1 does not leak to the outside, guaranteeing the normal transmission function of the wire core 2 and ensuring the safety of external objects and people.

[0039] The insulating layer 3 has excellent voltage resistance under electric field, which means that it can be used in high voltage power transmission lines without being easily broken down. This performance ensures the safe operation of the cable body 1 and the core 2 under high voltage environment. The shielding layer 4 of the aluminum-based composite material, as a light metal, has good conductivity and shielding performance.

[0040] The shielding layer 4 can further optimize its performance by adding other elements or materials. This material is lighter than nickel-clad copper and iron-nickel alloy, while maintaining a good electromagnetic shielding effect, which can reduce electromagnetic interference, ensure the accuracy and stability of signal transmission, and usually has good flexibility to avoid the cable body from breaking due to bending. The filling layer 5 can keep the multiple cores 2 round as a whole, reduce air gaps, and make the connection of the multiple cores 2 more stable, which is beneficial to the deformation of the cable body 1 and adaptability to different environments.

[0041] The flame retardant layer 8 is made of halogen-containing flame retardant material, which can release hydrogen halide when burning. The hydrogen halide can capture active free radicals HO, thereby delaying or extinguishing the combustion of the material, achieving the purpose of flame retardancy, and can significantly reduce the spread speed of the cable body 1 in the fire, providing valuable time for fire control and personnel evacuation;

[0042] The outer sheath 9 protects the outermost layer of the cable body 1. The outer sheath 9 is made of high-density polyethylene and has excellent tensile strength, material hardness, wear resistance and chemical corrosion resistance. This material not only has good flexibility, but also can withstand higher voltages and is not prone to dangers such as leakage and electric shock, thereby ensuring the electrical safety of the cable body 1.

Claims

1. A wire and cable with good anti-electrical interference and flame retardant effect, comprising a cable body (1), characterized in that: A plurality of wire cores (2) are arranged in the cable body (1); an insulating layer (3) is installed on the outer wall of the wire core (2); a shielding layer (4) is installed on the outer wall of the insulating layer (3); a filling layer (5) is connected between the plurality of shielding layers (4); the insulating layer (3) is made of cross-linked polyethylene, and the shielding layer (4) is made of an aluminum-based composite material.

2. The electric wire and cable with good flame retardant effect against electrical interference as claimed in claim 1, characterized in that: The plurality of wire cores (2) are arranged in a spiral shape inside the cable body (1), and the outer walls of the plurality of shielding layers (4) are tightly attached to each other.

3. The electric wire and cable with good flame retardant effect against electrical interference as claimed in claim 1, characterized in that: The outer wall of the filling layer (5) is installed with a protective layer (6), the outer wall of the protective layer (6) is fixed with a protective layer (7), and the outer wall of the protective layer (7) is installed with a flame retardant layer (8).

4. The electric wire and cable with good flame retardant effect against electrical interference as claimed in claim 3, characterized in that: The outer wall of the flame retardant layer (8) is provided with an outer protective layer (9), the flame retardant layer (8) is made of a halogen-containing flame retardant material, and the outer protective layer (9) is made of high-density polyethylene.

5. The electric wire and cable with good flame retardant effect against electrical interference as claimed in claim 1, characterized in that: The material of the filling layer (5) is silica gel.

6. The electric wire and cable with good flame retardant effect against electrical interference as claimed in claim 3, characterized in that: The protective layer (6) and the shielding layer (7) are both made of polyurethane.

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