Full-shielding soft copper conductor crosslinked polyethylene insulation polyvinyl chloride sheath power cable

Abstract

The utility model relates to the technical field of cables, in particular to a full-shielding soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheath power cable, which comprises a conductor, an asbestos filling layer is wrapped on the surface of the conductor, and a cross-linked polyethylene insulating layer is fixedly sleeved on the surface of the asbestos filling layer. The surface of the cross-linked polyethylene insulating layer is wrapped with fiber ointment. According to the utility model, through cooperation of the steel wires, the polyamide layer, the acrylonitrile-styrene copolymer layer, the polyformaldehyde layer, the polytetrafluoroethylene layer, the glass fiber layer and the polyether-ether-ketone layer, the stranded steel wires and a high-strength material are added to the power cable, so that the power cable can bear a large tensile strength, thereby improving the strength and tensile strength of the cable, and prolonging the service life of the cable. The high-strength cable is simple in manufacturing process and suitable for occasions needing high-strength cables such as wind power generation and alpine and gorge, the anti-aging material is added, the corrosion resistance of the surface can be improved, the performance of the high-strength cable is not prone to being damaged, and the applicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable. Background Technology

[0002] In power transmission and distribution systems, the quality and performance of cables are directly related to the stability and safety of the entire system. Insulated PVC sheathed power cables are used in AC power lines with rated voltage and below for power transmission and distribution.

[0003] According to the announcement number CN208271740U, the name is a high-strength fully shielded cross-linked polyethylene insulated polyvinyl chloride sheathed power cable, which includes a skeleton. Through research and analysis, it was found that although the cable has a skeleton made of copper wire braid, which can play a role in resisting pressure and increasing the shielding performance of the cable, making it less prone to damage during use and having good heat insulation, it also has the following disadvantages to a certain extent.

[0004] For example, power cables lack anti-friction properties, making them prone to friction with external surfaces during movement, resulting in surface wear and affecting their service life. Furthermore, their surface strength and aging resistance are generally low, making them susceptible to corrosion and breakage from prolonged exposure to external environments, thus reducing their applicability. To address these technical issues, it is essential to design a fully shielded soft copper conductor, cross-linked polyethylene insulated, and polyvinyl chloride sheathed power cable. Utility Model Content

[0005] The purpose of this invention is to provide a fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable, which has the advantages of improved structural strength, wear resistance, weather resistance, and applicability. It solves the problem that the surface is prone to wear, and long-term use leads to corrosion and breakage, thereby reducing performance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable, comprising a conductor, the surface of which is wrapped with an asbestos filling layer, the surface of which is fixedly fitted with a cross-linked polyethylene insulation layer, the surface of which is wrapped with a fiber grease, the surface of which is fixedly fitted with a high-strength layer, the surface of which is fixedly fitted with an aging-resistant layer, the surface of which is fixedly fitted with a polyvinyl chloride sheath, the high-strength layer comprising a polyamide layer, the surface of which is fixedly fitted with an acrylonitrile-styrene copolymer layer, and the surface of which is fixedly fitted with a polyoxymethylene layer.

[0007] Preferably, the inner cavity of the asbestos filling layer is provided with steel wires, and the number of steel wires is several.

[0008] Preferably, the aging-resistant layer includes a polytetrafluoroethylene layer, a glass fiber layer is fixedly sleeved on the surface of the polytetrafluoroethylene layer, and a polyetheretherketone layer is fixedly sleeved on the surface of the glass fiber layer.

[0009] Preferably, the surface of the fibrous grease is fixedly connected to the inner wall of the polyamide layer, and the surface of the polyether ether ketone layer is fixedly connected to the inner wall of the polyvinyl chloride sheath.

[0010] Preferably, the surface of the PVC sheath is fixedly fitted with a fixing band, the surface of the fixing band is welded with an mounting block, and the inner wall of the mounting block is rotatably connected with a ball bearing.

[0011] Preferably, the balls are arranged at equal intervals, and the cross-linked polyethylene insulation layer is fixedly connected to the inner wall of the polyamide layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model incorporates stranded steel wire and high-strength materials into the power cable through the combination of steel wire, polyamide layer, acrylonitrile-styrene copolymer layer, polyoxymethylene layer, polytetrafluoroethylene layer, glass fiber layer and polyetheretherketone layer. This allows the cable to withstand greater tensile force, thereby improving its strength and tensile strength. The manufacturing process is simple and it is suitable for applications requiring high-strength cables, such as wind power generation and high mountain canyons. The addition of aging-resistant materials increases the surface corrosion resistance, making it less prone to performance damage and improving its applicability.

[0014] 2. This utility model improves friction resistance by using a fixing belt, mounting block, and ball bearings in combination. This reduces friction between the power cable and the ground during dragging, thus preventing wear and significantly extending its service life. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the high-strength layer of this utility model;

[0017] Figure 3 This is a three-dimensional cross-sectional view of the aging-resistant layer of this utility model.

[0018] In the diagram: 1. Conductor; 2. Asbestos filling layer; 3. Cross-linked polyethylene insulation layer; 4. Fiber grease; 5. High-strength layer; 6. Aging-resistant layer; 7. Polyvinyl chloride sheath; 8. Polyamide layer; 9. Acrylonitrile-styrene copolymer layer; 10. Polyoxymethylene layer; 11. Steel wire; 12. Polytetrafluoroethylene layer; 13. Glass fiber layer; 14. Polyetheretherketone layer; 15. Fixing strap; 16. Mounting block; 17. Ball bearing. Detailed Implementation

[0019] Please see Figures 1-3 A fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable includes a conductor 1, an asbestos filling layer 2 covering the surface of the conductor 1, a cross-linked polyethylene insulation layer 3 fixedly covering the surface of the asbestos filling layer 2, a fiber grease 4 covering the surface of the cross-linked polyethylene insulation layer 3, a high-strength layer 5 fixedly covering the surface of the fiber grease 4, an aging-resistant layer 6 fixedly covering the surface of the high-strength layer 5, a polyvinyl chloride sheath 7 fixedly covering the surface of the aging-resistant layer 6, a polyamide layer 8 including a polyamide layer, an acrylonitrile-styrene copolymer layer 9 fixedly covering the surface of the polyamide layer 8, and a polyoxymethylene layer 10 fixedly covering the surface of the acrylonitrile-styrene copolymer layer 9.

[0020] Please see Figure 1 The inner cavity of the asbestos filling layer 2 is provided with steel wires 11. By providing steel wires 11, it can withstand a large breaking force, thereby making the internal tensile performance of the power cable better. There are several steel wires 11.

[0021] Please see Figure 3 The aging-resistant layer 6 includes a polytetrafluoroethylene (PTFE) layer 12. By setting the PTFE layer 12, it has electrical insulation properties and can resist the erosion and oxidation of most chemicals, making it less prone to aging and deterioration. A glass fiber layer 13 is fixedly sleeved on the surface of the PTFE layer 12. By setting the glass fiber layer 13, it is unaffected by temperature differences and humidity, and has the characteristics of high temperature resistance, thermal insulation, electrical insulation, fire retardancy, corrosion resistance, aging resistance, weather resistance, high strength, and smooth appearance. A polyetheretherketone (PEEK) layer 14 is fixedly sleeved on the surface of the glass fiber layer 13. By setting the PEEK layer 14, it has good aging resistance, excellent heat resistance, chemical corrosion resistance, mechanical properties, and electrical insulation.

[0022] Please see Figure 1 , Figure 2 and Figure 3 The surface of the fiber grease 4 is fixedly connected to the inner wall of the polyamide layer 8. By setting the fiber grease 4, the gaps inside the cable and the connection interface can be effectively filled to form a protective film, which can maintain the dry environment inside the cable for a long time and help extend the service life of the cable. The surface of the polyether ether ketone layer 14 is fixedly connected to the inner wall of the polyvinyl chloride sheath 7.

[0023] Please see Figure 1 The surface of the PVC sheath 7 is fixedly fitted with a fixing band 15. By setting the fixing band 15, the supported object is stably supported, which can improve the overall structural quality between the mounting block 16 and the PVC sheath 7. The mounting block 16 is welded to the surface of the fixing band 15, and the inner wall of the mounting block 16 is rotatably connected with a ball bearing 17.

[0024] Please see Figure 1 The balls 17 are arranged at equal intervals. By setting the balls 17, the polyvinyl chloride sheath 7 is supported and protected. The cross-linked polyethylene insulation layer 3 is fixedly connected to the inner wall of the polyamide layer 8.

[0025] In use, the asbestos filling layer 2 prevents electric sparks and arcs from being generated in the power cable during operation, ensuring safe operation of the cable, effectively reducing the operating temperature of the power cable, and extending its service life. It also acts as a sealant to prevent leakage in the power cable. The cross-linked polyethylene insulation layer 3 improves heat resistance and mechanical properties, providing high temperature resistance, wear resistance, strong chemical resistance, the ability to withstand high voltage loads, resistance to aging, and fire resistance, etc., increasing current carrying capacity and reducing weight. The polyamide layer 8 can withstand harsh environments such as high temperature, high pressure, and electromagnetic radiation, providing excellent heat resistance, chemical stability, and high strength. The cable possesses high strength, toughness, and wear resistance, ensuring long-term stable operation in various harsh environments. The acrylonitrile-styrene copolymer layer 9 provides superior thermal stability, mechanical properties, chemical stability, and flame retardant properties. The polyoxymethylene layer 10 provides excellent rigidity and toughness. When the power cable is in use, the outer surface of the ball bearing 17 contacts the ground. The ball bearing 17 and the mounting block 16 support the fixing band 15, reducing the contact between the PVC sheath 7 and the ground. The ball bearing 17 makes dragging the PVC sheath 7 easier, thus reducing wear.

[0026] In summary, this fully shielded soft copper conductor cross-linked polyethylene insulated PVC sheathed power cable, through the combination of conductor 1, asbestos filling layer 2, cross-linked polyethylene insulation layer 3, fiber grease 4, high-strength layer 5, aging-resistant layer 6, PVC sheath 7, polyamide layer 8, acrylonitrile-styrene copolymer layer 9, and polyoxymethylene layer 10, solves the problem of easy surface wear, corrosion and breakage due to long-term use, thereby reducing performance.

Claims

1. A fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable, comprising a conductor (1), characterized in that: The surface of the conductor (1) is covered with an asbestos filling layer (2), and a cross-linked polyethylene insulation layer (3) is fixedly sleeved on the surface of the asbestos filling layer (2). The surface of the cross-linked polyethylene insulation layer (3) is covered with a fiber grease (4), and a high-strength layer (5) is fixedly sleeved on the surface of the fiber grease (4). An aging-resistant layer (6) is fixedly sleeved on the surface of the high-strength layer (5), and a polyvinyl chloride sheath (7) is fixedly sleeved on the surface of the aging-resistant layer (6). The high-strength layer (5) includes a polyamide layer (8), and an acrylonitrile-styrene copolymer layer (9) is fixedly sleeved on the surface of the polyamide layer (8). A polyoxymethylene layer (10) is fixedly sleeved on the surface of the acrylonitrile-styrene copolymer layer (9).

2. The fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable according to claim 1, characterized in that: The inner cavity of the asbestos filling layer (2) is provided with steel wires (11), and the number of steel wires (11) is several.

3. The fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable according to claim 1, characterized in that: The aging-resistant layer (6) includes a polytetrafluoroethylene layer (12), a glass fiber layer (13) is fixedly sleeved on the surface of the polytetrafluoroethylene layer (12), and a polyether ether ketone layer (14) is fixedly sleeved on the surface of the glass fiber layer (13).

4. The fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable according to claim 3, characterized in that: The surface of the fibrous grease (4) is fixedly connected to the inner wall of the polyamide layer (8), and the surface of the polyether ether ketone layer (14) is fixedly connected to the inner wall of the polyvinyl chloride sheath (7).

5. The fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable according to claim 1, characterized in that: The surface of the polyvinyl chloride sheath (7) is fixedly fitted with a fixing band (15), and the surface of the fixing band (15) is welded with an mounting block (16), and the inner wall of the mounting block (16) is rotatably connected with a ball bearing (17).

6. The fully shielded soft copper conductor cross-linked polyethylene insulated polyvinyl chloride sheathed power cable according to claim 5, characterized in that: The balls (17) are arranged at equal intervals, and the cross-linked polyethylene insulation layer (3) is fixedly connected to the inner wall of the polyamide layer (8).

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