A high-safety civilian power cable

Abstract

This utility model provides a high-safety civilian electrical wire, relating to the field of civilian electrical wires. It includes an inner layer structure comprising a high-purity oxygen-free copper conductor, a cross-linked polyethylene insulation layer, a silicone rubber insulation layer, a braided copper mesh shielding layer, and a mica tape wrapping layer. An outer layer structure is provided on the outer wall of the inner layer structure, comprising a thermoplastic polyurethane sheathing layer, a steel wire braided armor layer, and a nylon sheathing layer. This utility model resists external pressure by using the cross-linked polyethylene and silicone rubber insulation layers. It also resists electromagnetic interference by using the braided copper mesh shielding layer. In the event of a fire, the high-temperature resistance of the mica tape wrapping layer ensures the partial integrity of the wire under fire conditions, increasing the overall safety of the wire, reducing internal damage under external pressure, and ensuring the partial integrity of the wire under fire conditions.

Description

Technical Field

[0001] This utility model relates to the field of civilian electrical wire technology, and in particular to a highly safe civilian electrical wire. Background Technology

[0002] Civil electrical wires are the core carriers for transmitting electrical energy in homes, businesses, and light industries, and their performance directly affects electrical safety and energy efficiency.

[0003] In the prior art, such as the civilian electrical wire with application number 201020274354.2, which belongs to the field of electrical wire technology, it solves the problem of poor heat resistance and stress cracking resistance of existing electrical wires and cables. This civilian electrical wire includes a conductor composed of several copper cores and an insulation layer. The conductor is extruded with an insulation layer made of silane cross-linked polyethylene plastic material. The insulation layer of this civilian electrical wire is made of silane cross-linked polyethylene plastic material. Through the chemical cross-linking of silane, the chemical structure of polyethylene is transformed into a triconical network structure, significantly improving the performance of polyethylene. Its heat resistance, thermal strength, aging resistance, and environmental stress cracking resistance are greatly improved. However, it is composed of a single-strand copper conductor and a polyvinyl chloride insulation layer, resulting in a relatively simple structure, which leads to poor protective effect and inadequate safety. Utility Model Content

[0004] The purpose of this utility model is to provide a highly safe civilian power cable to solve the problem mentioned in the background art, which is that the structure is relatively simple, resulting in poor protection and safety of the power cable.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including an inner layer structure, wherein the inner layer structure comprises a high-purity oxygen-free copper conductor, a cross-linked polyethylene insulation layer, a silicone rubber insulation layer, a braided copper mesh shielding layer, and a mica tape wrapping layer; and an outer layer structure is provided on the outer wall of the inner layer structure, wherein the outer layer structure comprises a thermoplastic polyurethane sheath layer, a steel wire braided armor layer, and a nylon sheath layer.

[0006] In a preferred embodiment, the outer wall of the high-purity oxygen-free copper conductor is provided with a cross-linked polyethylene insulation layer, which is wrapped around the outer wall of the high-purity oxygen-free copper conductor.

[0007] In a preferred embodiment, a silicone rubber insulation layer is provided on the outer wall of the cross-linked polyethylene insulation layer, and the silicone rubber insulation layer wraps around the outer wall of the cross-linked polyethylene insulation layer.

[0008] In a preferred embodiment, the outer wall of the silicone rubber insulating layer is provided with a woven copper mesh shielding layer, which is wound around the outer wall of the silicone rubber insulating layer.

[0009] In a preferred embodiment, the outer wall of the woven copper mesh shielding layer is provided with a mica tape wrapping layer, which is wrapped around the outer wall of the woven copper mesh shielding layer.

[0010] In a preferred embodiment, the outer wall of the mica tape wrapping layer is provided with a thermoplastic polyurethane sheath layer, which wraps around the outer wall of the mica tape wrapping layer.

[0011] In a preferred embodiment, the outer wall of the thermoplastic polyurethane sheath layer is provided with a steel wire braided armor layer, which is wrapped around the outer wall of the thermoplastic polyurethane sheath layer.

[0012] In a preferred embodiment, the outer wall of the steel wire braided armor layer is provided with a nylon sheath layer, which wraps around the outer wall of the steel wire braided armor layer.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model resists pressure when the wire is squeezed by external pressure through cross-linked polyethylene insulation layer and silicone rubber insulation layer; resists electromagnetic interference through woven copper mesh shielding layer; and ensures partial integrity of the wire under fire through the high temperature resistance of the mica tape wrapping layer. This increases the overall safety of the wire, reduces internal damage to the wire under external pressure, and ensures partial integrity of the wire under fire.

[0015] 2. This utility model uses a thermoplastic polyurethane sheath layer to buffer the wire when it is subjected to mechanical stress, and uses a steel wire braided armor layer and a nylon sheath layer to resist the wire when it is subjected to external friction and rodent bites. This increases the wire's protective effect and reduces the impact of mechanical stress, external friction and rodent bites on the wire. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a high-safety civilian power cable provided by this utility model;

[0017] Figure 2 A cross-sectional view of the inner layer structure of a high-safety civilian power cable provided by this utility model;

[0018] Figure 3 A cross-sectional view of the outer structure of a high-safety civilian power cable provided by this utility model.

[0019] Legend:

[0020] 1. Inner layer structure; 101. High-purity oxygen-free copper conductor; 102. Cross-linked polyethylene insulation layer; 103. Silicone rubber insulation layer; 104. Braided copper mesh shielding layer; 105. Mica tape wrapping layer; 2. Outer layer structure; 201. Thermoplastic polyurethane sheath layer; 202. Steel wire braided armor layer; 203. Nylon sheath layer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 This utility model provides a technical solution comprising: an inner layer 1, which includes a high-purity oxygen-free copper conductor 101, a cross-linked polyethylene insulation layer 102, a silicone rubber insulation layer 103, a braided copper mesh shielding layer 104, and a mica tape wrapping layer 105; and an outer layer 2, which includes a thermoplastic polyurethane sheath layer 201, a steel wire braided armor layer 202, and a nylon sheath layer 203.

[0023] In one embodiment, the outer wall of the high-purity oxygen-free copper conductor 101 is provided with a cross-linked polyethylene insulation layer 102, which is wrapped around the outer wall of the high-purity oxygen-free copper conductor 101.

[0024] Specifically: The cross-linked polyethylene insulation layer 102 is formed on the surface of the high-purity oxygen-free copper conductor 101 by a screw extruder at an extrusion temperature of 180-220℃.

[0025] In one embodiment, a silicone rubber insulation layer 103 is provided on the outer wall of the cross-linked polyethylene insulation layer 102, and the silicone rubber insulation layer 103 wraps around the outer wall of the cross-linked polyethylene insulation layer 102.

[0026] Specifically, the silicone rubber insulation layer 103 forms a chemical bond with the cross-linked polyethylene insulation layer 102 through a co-extrusion process.

[0027] In one embodiment, a woven copper mesh shielding layer 104 is provided on the outer wall of the silicone rubber insulating layer 103, the woven copper mesh shielding layer 104 is wound around the outer wall of the silicone rubber insulating layer 103, and a mica tape wrapping layer 105 is provided on the outer wall of the woven copper mesh shielding layer 104, the mica tape wrapping layer 105 is wound around the outer wall of the woven copper mesh shielding layer 104.

[0028] Specifically, it increases the overall safety of the wires, reduces internal damage to the wires under external pressure, and ensures the partial integrity of the wires in the event of a fire.

[0029] In one embodiment, the outer wall of the mica tape wrapping layer 105 is provided with a thermoplastic polyurethane sheath layer 201, which wraps around the outer wall of the mica tape wrapping layer 105. The outer wall of the thermoplastic polyurethane sheath layer 201 is provided with a steel wire braided armor layer 202, which is wound around the outer wall of the thermoplastic polyurethane sheath layer 201. The outer wall of the steel wire braided armor layer 202 is provided with a nylon sheath layer 203, which wraps around the outer wall of the steel wire braided armor layer 202.

[0030] Specifically, it increases the protective effect of the wires and reduces the impact of mechanical stress, external friction, and rodent bites on the wires.

[0031] Working principle: When the wire is squeezed by external pressure, the cross-linked polyethylene insulation layer 102 and the silicone rubber insulation layer 103 resist the pressure. When electromagnetic interference occurs, the braided copper mesh shielding layer 104 provides resistance. In the event of a fire, the high temperature resistance of the mica tape wrapping layer 105 ensures the integrity of the wire under fire. When the wire is subjected to mechanical stress, the thermoplastic polyurethane sheath layer 201 provides buffering. When the wire is subjected to external friction and rodent bites, the steel wire braided armor layer 202 and the nylon sheath layer 203 provide resistance.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-safety civilian electrical wire, characterized in that, include: The inner layer structure (1) includes a high-purity oxygen-free copper conductor (101), a cross-linked polyethylene insulation layer (102), a silicone rubber insulation layer (103), a braided copper mesh shielding layer (104), and a mica tape wrapping layer (105). The outer wall of the inner layer structure (1) is provided with an outer layer structure (2), which includes a thermoplastic polyurethane sheath layer (201), a steel wire braided armor layer (202), and a nylon sheath layer (203).

2. The high-safety civilian electrical wire according to claim 1, characterized in that: The outer wall of the high-purity oxygen-free copper conductor (101) is provided with a cross-linked polyethylene insulation layer (102), which is wrapped around the outer wall of the high-purity oxygen-free copper conductor (101).

3. The high-safety civilian electrical wire according to claim 2, characterized in that: The outer wall of the cross-linked polyethylene insulation layer (102) is provided with a silicone rubber insulation layer (103), which wraps around the outer wall of the cross-linked polyethylene insulation layer (102).

4. The high-safety civilian electrical wire according to claim 3, characterized in that: The outer wall of the silicone rubber insulation layer (103) is provided with a woven copper mesh shielding layer (104), which is wrapped around the outer wall of the silicone rubber insulation layer (103).

5. A high-safety civilian electrical wire according to claim 4, characterized in that: The outer wall of the woven copper mesh shielding layer (104) is provided with a mica tape wrapping layer (105), which is wrapped around the outer wall of the woven copper mesh shielding layer (104).

6. The high-safety civilian electrical wire according to claim 1, characterized in that: The outer wall of the mica tape wrapping layer (105) is provided with a thermoplastic polyurethane sheath layer (201), which wraps around the outer wall of the mica tape wrapping layer (105).

7. A high-safety civilian electrical wire according to claim 6, characterized in that: The outer wall of the thermoplastic polyurethane sheath layer (201) is provided with a steel wire braided armor layer (202), which is wrapped around the outer wall of the thermoplastic polyurethane sheath layer (201).

8. A high-safety civilian electrical wire according to claim 7, characterized in that: The outer wall of the steel wire braided armor layer (202) is provided with a nylon sheath layer (203), which wraps around the outer wall of the steel wire braided armor layer (202).

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