Tensile PVC power line

Abstract

The utility model relates to the technical field of power lines, in particular to a tensile PVC (polyvinyl chloride) power line, which comprises a line body, the line body comprises a wear-resistant layer group, a waterproof layer group, a flame-retardant layer, a tensile layer, an insulating layer and a wire core, the insulating layer is coated on the surface of the wire core, the tensile layer is coated on the outer ring wall of the insulating layer, the flame-retardant layer is wound on the outer ring wall of the tensile layer, and the flame-retardant layer is wound on the outer ring wall of the tensile layer. The flame-retardant layer is covered with a waterproof layer set, and a wear-resistant layer set is arranged outside the waterproof layer set. The insulating layer wraps the surface of the wire core, an insulating protection effect can be achieved when the wire core is electrified, the aluminum alloy armor wraps the insulating layer in a matched mode, the tensile and bending loss resistance of the whole power line can be improved, the flame-retardant layer made of mica tape materials is wound on the surface of the tensile layer, and when a fire occurs, the flame-retardant layer made of mica tape materials is wound on the surface of the flame-retardant layer. And the waterproof layer group is additionally arranged in the power line, so that the capability of protecting the power line from moisture erosion in an external humid environment can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power line technical field especially relates to a kind of tensile PVC power line. BACKGROUND

[0002] Power line is the cable for transmitting electric energy, widely used in family, industry, business and various occasions.The structure and characteristics of power line are different due to different purposes and environments.

[0003] Power line is an indispensable component of various electrical equipment and systems, and its performance and quality directly affect the safety and reliability of equipment and systems, such as the prior art Chinese patent publication "CN207425400U" provides a new type of PVC power line, including conductor, first PVC sleeve, second PVC sleeve and inner sheath, the outer surface of the conductor is coated with an insulating layer, the outer surface of the insulating layer is coated with an inner sheath, the inner sheath is located inside the first PVC sleeve, the inner wall of the first PVC sleeve is fixedly bonded with the second PVC sleeve, the second PVC sleeve is filled with glass fiber; due to the setting of the first PVC sleeve and the second PVC sleeve, multiple protection, when the first PVC sleeve is damaged, the inner sheath is protected by the second PVC sleeve, to avoid the situation that the conductor leaks due to the damage of the outer PVC sleeve caused by long-term use of power line, and the second PVC sleeve is filled with glass fiber, so as to increase its insulation performance, heat resistance, corrosion resistance and mechanical strength, improve the safety performance and service life of power supply.

[0004] At present, most of the power lines are mainly composed of core and insulating layer, as they are mainly used for power connection, compared with other types of cable structure, the protection performance is poor, if such power line is applied in complex environment, such as humid or flammable area, it is easy to be damaged by external factors, greatly reducing the safety of power line. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the above-mentioned shortcomings in the prior art and provides a kind of tensile PVC power line.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of tensile PVC power line is designed, including line body, the line body includes wear-resistant layer group, waterproof layer group, flame-retardant layer, tensile layer, insulating layer and core, the surface of core is coated with insulating layer, the outer wall of insulating layer is coated with tensile layer, the outer wall of tensile layer is wound with flame-retardant layer, the outer part of flame-retardant layer is covered with waterproof layer group, the outer part of waterproof layer group is provided with wear-resistant layer group;

[0008] The surface of the wire core is provided with a limiting protrusion, and the inner side of the insulating layer is provided with a plurality of limiting concaves.

[0009] In detail, the wear-resistant layer group comprises a wear-resistant base layer and a corrosion-resistant coating, and the corrosion-resistant coating is coated on the outer wall of the wear-resistant base layer.

[0010] In detail, the waterproof layer group comprises a waterproof base layer and a buffer coating, and the buffer coating is coated on the inner wall of the waterproof base layer, and the waterproof base layer is covered by the flame-retardant layer.

[0011] In detail, the wear-resistant base layer and the insulating layer are both made of PVC material.

[0012] In detail, the flame-retardant layer is made of mica tape material.

[0013] In detail, the tensile layer is made of aluminum alloy armor material.

[0014] In detail, the corrosion-resistant coating is made of silicon carbide coating material.

[0015] In detail, the waterproof base layer is made of polyethylene material.

[0016] In detail, the buffer coating is made of polyurethane coating material.

[0017] The design scheme of the utility model has the beneficial effects in the application process:

[0018] 1, through the insulating layer coated on the surface of the wire core, when the wire core is powered, the insulating protection effect is achieved, the aluminum alloy armor is coated outside the insulating layer, the tensile and bending loss resistance of the overall power cord is improved, the flame-retardant layer made of mica tape material is wound on the surface of the tensile layer, the fire spread of the power cord is reduced in case of fire, the waterproof layer group is added in the power cord, the moisture erosion protection ability of the power cord in the external humid environment is improved, finally, the wear-resistant layer group structure is added outside the waterproof layer group, the wear loss resistance ability of the power cord in the dragging condition during transportation or use is improved.

[0019] 2, based on the waterproof base layer made of polyethylene material of the waterproof layer group, the waterproof protection of the power cord is ensured, the buffer coating is added between the inner side of the waterproof base layer and the flame-retardant layer, the impact resistance of the power cord is improved, based on the wear-resistant base layer made of PVC material of the wear-resistant layer group, the wear loss resistance ability of the power cord to the dragging and scratching is ensured, and the corrosion-resistant coating is added outside the wear-resistant base layer, the corrosion resistance to the external corrosive liquid is improved. DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model.

[0021] Figure 2 It is the structure schematic view of the insulating layer and the core of the utility model;

[0022] Figure 3 It is the structure schematic view of the wear-resistant layer group of the utility model;

[0023] Figure 4 It is the structure schematic view of the waterproof layer group of the utility model.

[0024] In the figure: 1, wear-resistant layer group;11, waterproof layer group;12, flame-retardant layer;13, tensile layer;14, insulating layer;15, core;16, limit concave;17, limit convex;1001, wear-resistant base layer;1002, corrosion-resistant coating;1101, waterproof base layer;1102, buffer coating. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] Refer to Figures 1-4 A tensile PVC power line, including line body, line body contains wear-resistant layer group 1, waterproof layer group 11, flame-retardant layer 12, tensile layer 13, insulating layer 14 and core 15, the surface of core 15 is covered with insulating layer 14, the outer wall of insulating layer 14 is covered with tensile layer 13, the outer wall of tensile layer 13 is wound with flame-retardant layer 12, the outside of flame-retardant layer 12 is covered with waterproof layer group 11, the outside of waterproof layer group 11 is provided with wear-resistant layer group 1;

[0027] The surface of core 15 is provided with limit convex 17, and the inner side of insulating layer 14 is distributed with a plurality of limit concave 16, and limit convex 17 is set in combination with limit concave 16.

[0028] It is further need to explain that wear-resistant layer group 1 contains wear-resistant base layer 1001 and corrosion-resistant coating 1002, and corrosion-resistant coating 1002 is coated on the outer wall of wear-resistant base layer 1001.

[0029] It is further need to explain that waterproof layer group 11 contains waterproof base layer 1101 and buffer coating 1102, and buffer coating 1102 is coated on the inner wall of waterproof base layer 1101, and waterproof base layer 1101 is set in combination with flame-retardant layer 12.

[0030] It should be further explained that the wear-resistant base layer 1001 and the insulating layer 14 are both made of PVC material, which has good corrosion resistance to most chemicals, especially in acid, alkali and salt solutions, and has good flexibility and ductility, which can adapt to various bending and deformation. Modern PVC materials usually use lead-free formulations, which are harmless to the environment and human health, meet modern environmental protection requirements, have good wear resistance, and can resist scratching and contact, providing a damage-resistant ability.

[0031] It should be further explained that the flame-retardant layer 12 is made of mica tape material, which has very high dielectric strength and insulation resistance, can effectively prevent current leakage and short circuit, and ensure the safe operation of the cable. Mica tape can maintain stable performance at high temperature environment, with a maximum temperature resistance of over 1000°C. This makes it very suitable for cable insulation in high temperature environment. Mica tape material itself is non-toxic and harmless, does not affect the environment and human health, meets modern environmental protection requirements, and has excellent flame-retardant performance, which can reduce the spread of fire and improve the safety of the cable in case of fire.

[0032] It should be further explained that the tensile layer 13 is made of aluminum alloy armor material, which has excellent flame-retardant performance, can reduce the spread of fire and improve the safety of the cable in case of fire, and the armor layer can effectively prevent sharp objects from piercing and cutting the cable, protecting the internal conductor and insulating layer 14 from damage. The metal armor layer can play a certain electromagnetic shielding effect, reducing the influence of external electromagnetic interference on cable signal transmission.

[0033] It should be further explained that the corrosion-resistant coating 1002 is made of silicon carbide coating material, which can maintain stability at very high temperature, with a maximum temperature resistance of over 1600°C, suitable for application in high temperature environment. Silicon carbide coating has good corrosion resistance to most chemicals, especially in acid, alkali and salt solutions. Silicon carbide coating has excellent oxidation resistance, can maintain stability in high temperature oxidation environment, prevents material oxidation and corrosion, and has good electrical insulation performance.

[0034] It should be further explained that the waterproof base layer 1101 is made of polyethylene material, which has high tensile strength and impact resistance, can withstand large mechanical load, and still maintains good toughness and flexibility at low temperature environment without being brittle. Polyethylene has good electrical insulation performance, suitable for insulating parts of electronic and electrical equipment, and good waterproof performance.

[0035] It should be further explained that the buffer coating 1102 is made of polyurethane coating material, the polyurethane coating can be firmly attached to various substrates, the polyurethane coating has good elasticity and flexibility, can adapt to the deformation and movement of the substrate, reduce the risk of cracking and peeling, the polyurethane coating has excellent waterproof performance, can effectively prevent water penetration, suitable for waterproof and moisture-proof applications, the polyurethane coating has good corrosion resistance to most chemicals, especially in acid, alkali and solvent environments.

[0036] Working mode: by coating the surface of the online core 15 with an insulating layer 14, when the online core 15 is energized, it can play an insulating protective effect, the limiting protrusion 17 on the surface of the core 15 fits with the limiting concave 16 in the insulating layer 14, which can play a stable sleeve protection, and the aluminum alloy armor is wrapped outside the insulating layer 14, which can improve the overall power cord's ability to resist tensile and bending loss, and the flame-retardant layer 12 made of mica tape material is wrapped on the surface of the tensile layer 13, which can reduce the spread of the power cord fire in the event of a fire, by adding the waterproof layer group 11 inside the power cord, it can improve the ability of the power cord to resist moisture erosion in a humid environment, and finally, the wear-resistant layer group 1 structure is added outside the waterproof layer group 11, which can improve the wear resistance of the power cord in the case of dragging during transportation or use.

[0037] Based on the waterproof base layer 1101 made of polyethylene material of the waterproof layer group 11, the waterproof protection of the power cord can be ensured, the buffer coating 1102 is added between the inner side of the waterproof base layer 1101 and the flame-retardant layer 12, which can improve the impact resistance of the power cord, based on the wear-resistant base layer 1001 made of PVC material of the wear-resistant layer group 1, the anti-wear ability of the power cord to dragging and scratching can be ensured, and the corrosion-resistant coating 1002 is added outside the wear-resistant base layer 1001, which can improve the corrosion resistance to external corrosive liquids.

[0038] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A tensile resistant PVC power cord comprising a cord body, characterized by: The line body comprises a wear-resistant layer group (1), a waterproof layer group (11), a flame-retardant layer (12), a tensile layer (13), an insulating layer (14) and a core (15), the surface of the core (15) is covered with the insulating layer (14), the outer wall of the insulating layer (14) is covered with the tensile layer (13), the outer wall of the tensile layer (13) is wound with the flame-retardant layer (12), the outer part of the flame-retardant layer (12) is covered with the waterproof layer group (11), and the outer part of the waterproof layer group (11) is provided with the wear-resistant layer group (1). The surface of the core (15) is provided with a limiting protrusion (17), and the inner side of the insulating layer (14) is distributed with a plurality of limiting concaves (16), and the limiting protrusion (17) and the limiting concave (16) are fitted.

2. A tensile resistant PVC power cord according to claim 1, wherein: The wear-resistant layer group (1) comprises a wear-resistant base layer (1001) and a corrosion-resistant coating layer (1002), and the corrosion-resistant coating layer (1002) is coated on the outer wall of the wear-resistant base layer (1001).

3. A tensile resistant PVC power cord according to claim 2, wherein: The waterproof layer group (11) comprises a waterproof base layer (1101) and a buffer coating layer (1102), the buffer coating layer (1102) is coated on the inner wall of the waterproof base layer (1101), and the waterproof base layer (1101) is covered with the flame-retardant layer (12).

4. A tensile resistant PVC power cord according to claim 3, wherein: The wear-resistant base layer (1001) and the insulating layer (14) are both made of PVC material.

5. A tensile PVC power cord according to claim 4, characterized in that: The flame-retardant layer (12) is made of mica tape material.

6. A tensile PVC power cord according to claim 5, wherein: The tensile layer (13) is made of aluminum alloy armor material.

7. A tensile PVC power cord according to claim 6, wherein: The corrosion-resistant coating layer (1002) is made of silicon carbide coating material.

8. A tensile PVC power cord according to claim 7, characterized in that: The waterproof base layer (1101) is made of polyethylene material.

9. A tensile PVC power cord according to claim 8, characterized in that: The buffer coating layer (1102) is made of polyurethane coating material.

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