Torsion-resistant and fire-resistant environmentally friendly power cables

Abstract

This utility model relates to the field of power cable technology and discloses a torsion-resistant and fire-resistant environmentally friendly power cable, comprising a cable core, a metal shielding layer, a wrapping layer, a fire-resistant and heat-insulating material, and an outer sheath. The metal shielding layer is disposed outside the cable core, the wrapping layer is disposed outside the metal shielding layer, the fire-resistant and heat-insulating material is disposed outside the wrapping layer, and the outer sheath is disposed outside the fire-resistant and heat-insulating material. The cable core includes a conductor, an insulation layer, a fire-resistant mica tape layer, and an inner sheath. The insulation layer is disposed outside the conductor, and the fire-resistant mica tape layer is disposed outside the insulation layer. This torsion-resistant and fire-resistant environmentally friendly power cable, by incorporating a torsion-resistant layer woven from high-strength fiber filaments in the cable structure, can effectively resist external torsion, protecting the internal conductor, insulation layer, and other structures from damage, greatly improving the reliability and stability of the cable in complex operating environments, and extending the cable's service life.

Description

Technical Field

[0001] This utility model relates to the field of power cable technology, specifically to an environmentally friendly power cable that is resistant to torsion and fire. Background Technology

[0002] With social development and progress, the application of electricity has become increasingly widespread, from daily life to industrial production, from urban construction to the development of remote areas. As a key carrier of power transmission, the performance of power cables directly affects the stability and security of power supply. In many complex application scenarios, extremely stringent requirements are placed on the performance of power cables.

[0003] In some industrial production environments, such as the layout of production lines in large factories, power cables need to be frequently twisted and deformed as the equipment moves and rotates. When faced with such frequent and large-scale twisting, the internal conductors and insulation layers of traditional power cable structures are easily damaged. The conductors may break or deform, leading to increased resistance, affecting power transmission efficiency, and even causing short-circuit faults, threatening the safe operation of production equipment. Utility Model Content

[0004] The purpose of this invention is to provide a torsion-resistant and fire-resistant environmentally friendly power cable to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a torsion-resistant and fire-resistant environmentally friendly power cable, comprising a cable core, a metal shielding layer, a wrapping layer, a fireproof and heat-insulating material, and an outer sheath. The metal shielding layer is disposed outside the cable core, the wrapping layer is disposed outside the metal shielding layer, the fireproof and heat-insulating material is disposed outside the wrapping layer, and the outer sheath is disposed outside the fireproof and heat-insulating material.

[0006] The cable core includes a conductor, an insulation layer, a fire-resistant mica tape layer, and an inner sheath. The insulation layer is disposed outside the conductor, the fire-resistant mica tape layer is disposed outside the insulation layer, and the inner sheath is disposed outside the fire-resistant mica tape layer.

[0007] The outer protective layer includes an anti-torsion layer, a flame-retardant layer, and an environmentally friendly protective layer, which are arranged sequentially from the inside to the outside as a flame-retardant layer, an environmentally friendly protective layer, and an environmentally friendly protective layer.

[0008] Preferably, the conductor is composed of high-purity oxygen-free copper wire, which has good conductivity and flexibility, can effectively reduce resistance and reduce power loss, and can better adapt to deformation when the cable is twisted, thus avoiding breakage.

[0009] Preferably, the insulating layer is made of cross-linked polyethylene material. Cross-linked polyethylene has excellent electrical insulation properties, mechanical properties and heat resistance properties, and can stably insulate and protect the conductor under different working environments to prevent leakage.

[0010] Preferably, the fire-resistant mica tape layer is composed of multiple layers of mica tape tightly wrapped together. The mica tape can maintain good insulation performance and mechanical strength at high temperatures. When the cable encounters a fire, it can effectively prevent the spread of flames, protect the internal conductors from high temperature damage, and ensure continuous power transmission.

[0011] Preferably, the inner protective layer is made of low-smoke halogen-free polyolefin material. This material not only has good flexibility and corrosion resistance, which can effectively protect the inner structure, but also does not produce a large amount of smoke and toxic gases when burning, which meets environmental protection requirements and reduces the harm to people and the environment in the event of a fire.

[0012] Preferably, the anti-torsion layer is woven from multiple strands of high-strength fiber filaments, such as aramid fiber filaments. Aramid fiber has properties such as high strength, high modulus, wear resistance, and chemical corrosion resistance, which can give the cable excellent anti-torsion ability. When the cable is twisted by external force, it can effectively disperse stress and protect the internal structure from damage.

[0013] Preferably, the flame-retardant layer is made of flame-retardant polyvinyl chloride (PVC). When flame-retardant PVC comes into contact with a fire source, it can quickly decompose to produce non-combustible gases, inhibit the spread of flames, improve the flame-retardant performance of the cable, and reduce the risk of fire.

[0014] Preferably, the environmentally friendly protective layer is made of a biodegradable material, such as polylactic acid. Polylactic acid is a biodegradable polymer material that can gradually decompose into water and carbon dioxide in the natural environment, causing no pollution to the environment and realizing the environmentally friendly treatment of the cable after its service life.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This torsion-resistant and fire-resistant environmentally friendly power cable, by setting an anti-torsion layer made of high-strength fiber filaments in the cable structure, can effectively resist external torsion and protect the internal conductor, insulation layer and other structures from damage, greatly improving the reliability and stability of the cable in complex use environments and extending the service life of the cable.

[0017] 2. This torsion-resistant and fire-resistant environmentally friendly power cable, through the use of a fire-resistant mica tape layer formed by multiple layers of mica tape wrapping, and the filling of ceramic fiber cotton fireproof and heat-insulating material, can withstand the long-term baking of high-temperature flames during a fire, prevent the spread of flames and heat transfer, and ensure that the cable can continue to work normally for a certain period of time, providing strong protection for personnel evacuation and fire fighting.

[0018] 3. This torsion-resistant and fire-resistant environmentally friendly power cable has an inner sheath made of low-smoke halogen-free polyolefin material, which does not produce a large amount of smoke and toxic gases when burning; the environmentally friendly protective layer is made of degradable polylactic acid, which can decompose naturally after the cable is scrapped, reducing pollution to the environment, meeting the requirements of today's society for environmentally friendly products, and contributing to sustainable development. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cable core structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the outer protective layer of this utility model.

[0022] In the diagram: 1. Cable core; 2. Metal shielding layer; 3. Wrapping layer; 4. Fireproof and heat-insulating material; 5. Outer sheath; 101. Conductor; 102. Insulation layer; 103. Fire-resistant mica tape layer; 104. Inner sheath; 501. Anti-torsion layer; 502. Flame-retardant layer; 503. Environmental protection layer. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-3 The present invention provides the following technical solution: a torsion-resistant and fire-resistant environmentally friendly power cable, comprising a cable core 1, a metal shielding layer 2, a wrapping layer 3, a fireproof and heat-insulating material 4, and an outer sheath 5. The metal shielding layer 2 is disposed outside the cable core 1, the wrapping layer 3 is disposed outside the metal shielding layer 2, the fireproof and heat-insulating material 4 is disposed outside the wrapping layer 3, and the outer sheath 5 is disposed outside the fireproof and heat-insulating material 4.

[0025] The cable core 1 includes a conductor 101, an insulation layer 102, a fire-resistant mica tape layer 103, and an inner sheath 104. The insulation layer 102 is disposed outside the conductor 101, the fire-resistant mica tape layer 103 is disposed outside the insulation layer 102, and the inner sheath 104 is disposed outside the fire-resistant mica tape layer 103. The conductor 101 is composed of high-purity oxygen-free copper wire, which has good conductivity and flexibility, effectively reducing resistance and power loss. It also better adapts to deformation and avoids breakage when the cable is twisted. The insulation layer 102 is made of cross-linked polyethylene material, which has excellent electrical insulation, mechanical properties, and heat resistance, enabling it to withstand various working environments. The fire-resistant mica tape layer 103 provides stable insulation protection for conductor 101, preventing leakage. It consists of multiple layers of tightly wrapped mica tape. The mica tape maintains good insulation performance and mechanical strength at high temperatures. When the cable encounters a fire, it can effectively prevent the spread of flames, protect the internal conductor 101 from high temperature damage, and ensure continuous power transmission. The inner sheath 104 is made of low-smoke halogen-free polyolefin material. This material not only has good flexibility and corrosion resistance, effectively protecting the inner structure, but also does not produce a large amount of smoke and toxic gases when burning, meeting environmental protection requirements and reducing the harm to people and the environment in the event of a fire.

[0026] The outer sheath 5 includes an anti-torsion layer 501, a flame-retardant layer 502, and an environmentally friendly protective layer 503. From the inside out, the outer sheath 5 consists of a flame-retardant layer 502, an environmentally friendly protective layer 503, and an environmentally friendly protective layer 503. The anti-torsion layer 501 is woven from multiple strands of high-strength fiber filaments, which can give the cable excellent anti-torsion ability. When the cable is twisted by external force, it can effectively disperse stress and protect the internal structure from damage. The flame-retardant layer 502 is made of flame-retardant polyvinyl chloride material. When flame-retardant polyvinyl chloride encounters a fire source, it can quickly decompose to produce non-combustible gas, inhibit the spread of flame, improve the flame-retardant performance of the cable, and reduce the risk of fire. The environmentally friendly protective layer 503 is made of biodegradable materials, such as polylactic acid. Polylactic acid is a biodegradable polymer material that can gradually decompose into water and carbon dioxide in the natural environment, without polluting the environment, and realizes the environmentally friendly treatment of the cable after the end of its service life.

[0027] In use, a metal shielding layer 2 is wound around the outside of the cable core 1, and a wrapping layer 3 is set outside the metal shielding layer 2. Fireproof and heat-insulating material 4 is filled between the wrapping layer 3 and the outer sheath 5. The fireproof and heat-insulating material 4 is ceramic fiber cotton. During the filling process, it is ensured that the ceramic fiber cotton is filled evenly and densely. The outer sheath 5 consists of an anti-torsion layer 501, a flame-retardant layer 502 and an environmentally friendly protective layer 503 from the inside out. The anti-torsion layer 501 forms a strong anti-torsion structure. The flame-retardant layer 502 is coated on the outside of the anti-torsion layer 501 by an extrusion process to ensure that the thickness of the flame-retardant layer 502 is uniform. The environmentally friendly protective layer 503 is made of polylactic acid material and is formed on the outside of the flame-retardant layer 502 by coating or extrusion to form the final environmentally friendly protective structure.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Environmentally friendly power cable resistant to kinking and fire, comprising a core (1), a metal shield (2), an overjacket (3), a fireproof thermal insulation material (4) and an outer sheath (5), characterized in that: The metal shielding layer (2) is disposed outside the cable core (1), the wrapping layer (3) is disposed outside the metal shielding layer (2), the fireproof and heat-insulating material (4) is disposed outside the wrapping layer (3), and the outer protective layer (5) is disposed outside the fireproof and heat-insulating material (4). The cable core (1) includes a conductor (101), an insulation layer (102), a fire-resistant mica tape layer (103), and an inner sheath (104). The insulation layer (102) is disposed outside the conductor (101), the fire-resistant mica tape layer (103) is disposed outside the insulation layer (102), and the inner sheath (104) is disposed outside the fire-resistant mica tape layer (103). The outer protective layer (5) includes an anti-torsion layer (501), a flame retardant layer (502) and an environmentally friendly protective layer (503), and the outer protective layer (5) is arranged from the inside to the outside as a flame retardant layer (502), an environmentally friendly protective layer (503) and an environmentally friendly protective layer (503).

2. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The conductor (101) is composed of high-purity oxygen-free copper wire.

3. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The insulation layer (102) is made of cross-linked polyethylene material, which has excellent electrical insulation properties, mechanical properties and heat resistance properties.

4. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The fire-resistant mica tape layer (103) is composed of multiple layers of mica tape tightly wrapped around it.

5. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The inner protective layer (104) is made of low-smoke halogen-free polyolefin material.

6. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The anti-torsion layer (501) is woven from multiple strands of high-strength fiber filaments.

7. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The flame-retardant layer (502) is made of flame-retardant polyvinyl chloride material.

8. The kink-resistant, fire-resistant, environmentally friendly power cable of claim 1, wherein: The environmentally friendly protective layer (503) is made of biodegradable material.

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