A high-life anti-tension type road lamp special environment-friendly cable

Abstract

The application relates to a high-life anti-tension type environment-friendly cable special for street lamps, and relates to the cable technical field.The high-life anti-tension type environment-friendly cable special for street lamps comprises a plurality of cores, a plurality of anti-tension core cables and a wire protection layer, the plurality of cores are arranged side by side, each anti-tension core cable is arranged between two adjacent cores, the anti-tension core cable comprises twisted steel wires and a first insulation layer, the first insulation layer is sleeved with the twisted steel wires and abuts against the two sides of the core, and the wire protection layer wraps the core and the anti-tension core cable.The application is used to solve the problem that the current cable for street lamps has poor anti-tension property.

Description

Technical Field

[0001] This application relates to the field of cable technology, and in particular to a high-life, tensile-resistant, environmentally friendly cable for streetlights. Background Technology

[0002] As a crucial medium for power transmission, cables play an irreplaceable role in modern urban lighting systems. With rapid urban development and increasing environmental awareness, the research and application of various environmentally friendly cables has become an inevitable trend in the industry. Especially for streetlight cables used in outdoor environments, not only must they possess excellent electrical performance, but they must also meet requirements regarding weather resistance, safety, and service life.

[0003] However, existing street light cables are prone to structural deformation or even damage when subjected to large tensile forces, causing unnecessary trouble and increasing maintenance costs. This directly affects the actual service life of the cables and their reliability in complex environments. Utility Model Content

[0004] This application provides a high-life, tensile-strength environmentally friendly cable for streetlights, which solves the problem of poor tensile strength in current streetlight cables.

[0005] A high-life, tensile-resistant, environmentally friendly cable for streetlights, comprising:

[0006] Multiple wire cores, with the multiple wire cores arranged side by side;

[0007] Multiple tensile core cables, each of which is disposed between two adjacent cores, each tensile core cable includes stranded steel wire and a first insulation layer, the first insulation layer being sleeved on the stranded steel wire and abutting against the cores on both sides;

[0008] The protective layer wraps around the wire core and the tensile core cable.

[0009] By adopting the above technical solution, and by installing a tensile core cable between two adjacent conductors, and this tensile core cable contains stranded steel wires, the tensile strength of the cable is effectively improved, preventing the cable from breaking due to external forces and ensuring the structural integrity and normal use of the cable. The sheath layer protects the conductors and the tensile core cable, preventing the conductors from being affected by external mechanical damage, chemical corrosion, and humid environments. It also protects the stranded steel wires and the first insulation layer of the tensile core cable, ensuring the stable performance of all parts of the cable and thus extending the cable's service life.

[0010] In one embodiment, the wire core includes a conductor, a water-blocking tape, and a second insulating layer. The water-blocking tape is sleeved over the conductor, and the second insulating layer is sleeved over the water-blocking tape. The second insulating layer is made of ceramicized silicone rubber material.

[0011] By adopting the above technical solution, the water-blocking tape in the conductor core can play a sealing, waterproofing, and moisture-proofing role, preventing moisture from penetrating the conductor and avoiding conductor corrosion and electrical performance degradation caused by moisture. At the same time, the water-blocking tape also provides a certain degree of buffering protection, reducing the impact of external impacts on the conductor and protecting its normal operation. The second insulation layer uses ceramicized silicone rubber material, which is not only resistant to low temperatures but also has extremely high fire resistance, flame retardancy, low smoke, and non-toxic environmental protection properties. In the event of a fire, it ensures uninterrupted power transmission, buying time for personnel evacuation and fire rescue, while also meeting environmental protection requirements, reducing environmental pollution, and thus improving the service life of the conductor core.

[0012] In one embodiment, the water-blocking tape is made of a composite material of polyester nonwoven fabric and superabsorbent polymer.

[0013] By employing the above technical solution, polyester nonwoven fabric possesses excellent mechanical properties and air permeability, while superabsorbent polymer (SAP) endows the material with the characteristic of absorbing water and swelling, rapidly forming a gel-like substance to block moisture diffusion. The combination of these two components enables rapid absorption and locking of moisture, preventing further diffusion and thus more effectively achieving water-blocking functionality, ensuring reliable cable operation even in humid environments.

[0014] In one embodiment, the protective layer includes a wrapping layer that covers the wire core and the tensile core cable.

[0015] By adopting the above technical solution, the core and tensile core are wrapped in a tape layer. This design can tightly wrap the core and tensile core, ensuring that the cable will not loosen during use, further enhancing their protection, preventing external factors from interfering with and damaging the core and tensile core, and also helping to maintain the overall structural stability of the cable.

[0016] In one embodiment, water-resistant yarn is filled between the core, the first insulation layer and the wrapping layer.

[0017] By adopting the above technical solution, a dual water-blocking effect is achieved with the water-blocking tape in the core. Even if a small amount of moisture breaks through the water-blocking yarn, the water-blocking tape can further prevent moisture penetration, greatly improving the cable's waterproof performance and ensuring safe and reliable operation of the cable in various humid environments.

[0018] In one embodiment, the protective layer further includes a braided layer that covers the wrapping layer, the braided layer being made of polyamide fiber material.

[0019] By adopting the above technical solutions, the cable maintains good performance and is not easily damaged even when subjected to external tensile forces, friction, and in environments with high temperatures or chemical corrosion. This improves the cable's durability and reliability, and reduces the frequency of cable failures and replacements caused by external factors.

[0020] In one embodiment, the sheath further includes an outer sheath surrounding the braided layer, the outer sheath being made of low-smoke halogen-free thermoplastic polyurethane elastomer rubber.

[0021] By adopting the above technical solutions, the outer sheath possesses high wear resistance, oil resistance, and elasticity. After cable extrusion, it improves cable mobility, making installation and use more flexible and convenient. Furthermore, the high elasticity and wear resistance of this material increase the cable's service life and reduce cable replacement costs.

[0022] In one embodiment, the sheath further includes a protective layer, which covers the outer sheath, and the protective layer is made of a composite ceramicized silica paste material.

[0023] By adopting the above technical solution, a hard ceramic protective layer can be formed under high-temperature flame conditions, providing additional fire protection for the cable, better protecting the internal structure of the cable, and ensuring the stability of power transmission. Furthermore, this material is non-toxic, environmentally friendly, and complies with the EU RoHS directive, making it the preferred material for new products. Its use reduces laying costs and product replacement costs over its lifespan, improving the cost-effectiveness of the cable.

[0024] In one embodiment, the high-life tensile-resistant environmentally friendly street light cable further includes a rodent-proof layer, which is fitted over the protective layer.

[0025] By adopting the above technical solutions, the installation of the anti-rodent layer can prevent the cable from being chewed by rodents and ants, ensure the normal operation of the cable, and reduce the maintenance and replacement costs caused by rodent and ant damage.

[0026] In one embodiment, the tensile core cable has the same diameter as the wire core, and the high-life tensile-resistant environmentally friendly street light cable is flat; the stranded steel wire is composed of soft steel wires with a diameter of 0.15mm stranded together, and the first insulation layer is made of EPDM rubber material.

[0027] By adopting the above technical solution, the flat cable is less prone to rolling, reducing installation difficulties. Furthermore, the larger surface area of ​​the flat cable facilitates heat dissipation. This specification of soft steel wire stranding ensures good flexibility while maintaining a certain tensile strength, facilitating cable installation and laying. The first insulation layer uses EPDM rubber, which has excellent insulation, aging resistance, and weather resistance, effectively protecting the stranded steel wires from external environmental influences and further enhancing the performance and reliability of the tensile core cable.

[0028] In summary, this application includes at least one beneficial effect:

[0029] 1. By installing a tensile core cable between two adjacent conductors, and this tensile core cable contains stranded steel wires, the tensile strength of the cable is effectively improved, preventing the cable from breaking due to external forces and ensuring the structural integrity and normal use of the cable. The sheath layer protects the conductors and the tensile core cable, preventing the conductors from being affected by external mechanical damage, chemical corrosion, and humid environments. It also protects the stranded steel wires of the tensile core cable and the first insulation layer, ensuring the stable performance of all parts of the cable and thus extending the cable's service life.

[0030] 2. The water-blocking tape in the conductor acts as a sealant, waterproofing, and moisture-proofing layer, preventing moisture from penetrating the conductor and avoiding corrosion and degradation of electrical performance caused by moisture. Simultaneously, the water-blocking tape provides cushioning protection, reducing the impact of external shocks on the conductor and protecting its normal operation. The second insulation layer uses ceramicized silicone rubber, which is not only resistant to low temperatures but also possesses extremely high fire resistance, flame retardancy, low smoke, and non-toxic environmental properties. In the event of a fire, it ensures uninterrupted power transmission, buying time for evacuation and firefighting, while also meeting environmental protection requirements, reducing pollution, and thus extending the lifespan of the conductor.

[0031] 3. This allows the protective layer to form a hard ceramic protective layer under high-temperature flame conditions, providing additional fire protection for the cable, better protecting the internal structure, and ensuring the stability of power transmission. Furthermore, this material is non-toxic, environmentally friendly, and complies with the EU RoHS directive, making it the preferred material for new products. Its use reduces laying costs and product replacement costs throughout the cable's lifespan, improving the cable's cost-effectiveness. Attached Figure Description

[0032] Figure 1 This is a cross-sectional schematic diagram of a high-life, tensile-resistant, environmentally friendly street light cable provided in an embodiment of this application;

[0033] Figure 2 This is a cross-sectional structural diagram of a rodent-proof and ant-proof layer provided in an embodiment of this application.

[0034] Explanation of reference numerals in the attached diagram: 1. High-life, tensile-resistant environmentally friendly cable for streetlights; 11. Core wire; 111. Conductor; 112. Water-blocking tape; 113. Second insulation layer; 12. Tensile-resistant core cable; 121. Stranded steel wire; 122. First insulation layer; 13. Sheath layer; 131. Wrapping tape layer; 132. Braided layer; 133. Outer sheath; 134. Protective layer; 14. Water-blocking yarn; 15. Rodent-proof layer. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-2 This application provides a further detailed description of the high-life, tensile-strength environmentally friendly street light cable.

[0036] Example 1

[0037] Please see Figure 1-2 The present application provides a high-life tensile-resistant environmentally friendly cable 1 for streetlights, which includes multiple conductors 11, multiple tensile-resistant core cables 12, and a sheath layer 13.

[0038] like Figure 1 As shown, the wire core 11 is assembled from a conductor 111, a water-blocking tape 112, and a second insulation layer 113. The wire core 11 is arranged horizontally, with the water-blocking tape 112 covering the conductor 111, and the second insulation layer 113 covering the water-blocking tape 112. Specifically, the conductor 111 can be made of tin-plated copper of type VI, which enhances the conductor's flexibility and bending radius, reduces connection resistance and corrosion resistance, and facilitates construction. For the water-blocking tape 112, it is recommended to choose a product type that is composite of polyester non-woven fabric and superabsorbent polymer, which has the property of absorbing water and swelling, and can quickly form a gel-like substance to block the diffusion of water. Of course, other waterproof materials can also be used. The second insulation layer 113 uses ceramicized silicone rubber as the key raw material, which is not only resistant to low temperatures but also has extremely high fire resistance, flame retardancy, low smoke, non-toxic and other environmentally friendly properties. The temperature resistance limit is as high as 950℃-1000℃ and fully complies with the requirements of internationally accepted safety standard certification system, playing a robust protective role in ensuring uninterrupted power transmission in the event of a fire.

[0039] Multiple tensile core cables 12 are also provided, each tensile core cable 12 is located between two adjacent cores 11. The tensile core cable 12 has the same diameter as the core 11. The tensile core cable 12 is composed of stranded steel wires 121 and a first insulation layer 122. The first insulation layer 122 is fitted over the stranded steel wires 121 and abuts against the second insulation layers 113 on both sides. Specifically, the stranded steel wires 121 can be soft steel wires with a diameter of 0.15mm wound in a spiral according to a certain rule, or they can be replaced with galvanized iron wire of the same specification to enhance corrosion resistance. The first insulation layer 122 is recommended to be made of EPDM rubber material pressed into a long strip and tightly wrapped around each stranded steel wire 121. Its thickness is about 0.3mm to 0.5mm, which can effectively isolate external environmental factors and ensure sufficient flexibility for bending operations.

[0040] The protective layer 13 encases the conductor 11 and the tensile core cable 12. Specifically, the protective layer 13 may include a wrapping layer 131, which covers the conductor 11 and the tensile core cable 12. This wrapping layer 131 can be made of polyester tape and longitudinally wraps the conductor 11 and the tensile core cable 12. The wrapping should be tight and flat, without any gaps, with an overlap rate of 20-40%, thereby improving the mechanical and electrical performance of the cable. The gaps between the first insulation layer 122, the second insulation layer 113, and the wrapping layer 131 can be filled tightly with water-blocking yarn 14 to ensure that any potential leakage path is completely sealed to prevent leakage accidents, achieving a double water-blocking effect. Then, the protective layer 13 may include a braided layer 132. The braided layer 132 is made of 0.12-0.15mm high-performance polyamide fiber fabric, cut and spliced ​​to cover the outer surface of the wrapping layer 131, with a braiding density ≥80%, fully utilizing its excellent mechanical strength properties to resist the risk of daily wear and tear. Then, an outer sheath 133 is added to act as a secondary shielding barrier. Here, it is recommended to use low-smoke halogen-free thermoplastic polyurethane elastomer rubber, which has excellent wear resistance and chemical stability. Finally, an additional protective layer 134 can be added on the outermost side. The protective layer 134 can be a 0.5mm layer of composite ceramicized silica paste coated on the outer surface of the outer sheath 133. It can quickly transform into a dense ceramic texture under extreme high-temperature fire source stimulation to block the spread of flames.

[0041] The cable has a flat, elliptical, or rectangular cross-section. Compared to the traditional circular structure, its width is significantly greater than its height, making it easier to fit the ground or other carrier surfaces during cable laying and reducing the probability of stress concentration caused by excessively small bending radii.

[0042] like Figure 2As shown, the cable may also include a rodent-proof layer 15, which is fitted with a protective layer 13. Specifically, a thin metal sheet, such as galvanized steel or aluminum alloy, can be selected as the main component of the rodent-proof layer 15, utilizing its high hardness to prevent erosion by rat teeth. Another feasible method is to use fiberglass reinforced plastic (FRP), which, due to its excellent strength and corrosion resistance, can also effectively prevent insect infestation. In addition, the rodent-proof layer 15 itself can be selected from a special coating made from a mixture of natural plant extracts, which can be sprayed evenly onto the entire cable sheath, or prefabricated small granular modules can be embedded and fixed in appropriate locations to provide targeted protection.

[0043] The implementation principle of this embodiment is as follows: the wire core 11 and the tensile core cable 12 are arranged horizontally in sequence, and the sheath layer 13 wraps the wire core 11 and the tensile core cable 12, which effectively improves the tensile strength of the cable; in addition, the structure of the wire core 11 and the sheath layer 13 are integrated with environmentally friendly and harmless materials, which makes the cable have better resistance to high and low temperatures, wear resistance and waterproof effect, thereby extending the service life of the cable and making it less likely to cause pollution. It is suitable for high-mast lights, landscape lights, courtyard lights and road lighting.

[0044] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high life span, anti-tension, environment-friendly cable for street light, characterized in that, include: Multiple wire cores (11) are arranged side by side; Multiple tensile core cables (12), each tensile core cable (12) is disposed between two adjacent conductors (11), each tensile core cable (12) includes stranded steel wires (121) and a first insulation layer (122), the first insulation layer (122) sleeves the stranded steel wires (121) and abuts against the conductors (11) on both sides; and A protective layer (13) covers the wire core (11) and the tensile core cable (12); Each of the wire cores (11) includes a conductor (111), a water-blocking strip (112), and a second insulation layer (113). The water-blocking strip (112) is sleeved on the conductor (111), and the second insulation layer (113) is sleeved on the water-blocking strip (112). The second insulation layer (113) is made of ceramicized silicone rubber material. The protective layer (13) includes a wrapping layer (131), which covers the wire core (11) and the tensile core cable (12); Water-resistant yarn (14) is filled between the core (11), the first insulation layer (122) and the wrapping layer (131); The protective layer (13) further includes a braided layer (132), which covers the wrapping layer (131), and the braided layer (132) is made of polyamide fiber material; The sheath layer (13) further includes an outer sheath (133), which surrounds the braided layer (132). The outer sheath (133) is made of low-smoke halogen-free thermoplastic polyurethane elastomer rubber. The wire protection layer (13) further includes a protective layer (134), which covers the outer sheath (133). The protective layer (134) is made of composite ceramicized silica paste material.

2. A high life-span, anti-tension, environment-friendly cable for street light according to claim 1, characterized in that, The water-blocking tape (112) is made of a composite material of polyester non-woven fabric and superabsorbent polymer.

3. A long life, anti-tension, environmentally friendly cable for street lighting according to any one of claims 1-2, characterized in that, The high-life tensile-resistant street light special environmentally friendly cable (1) also includes a rodent-proof layer (15), which is fitted with the protective layer (13).

4. A high life-span, anti-tension, environment-friendly cable for street lamp according to claim 3, characterized in that, The tensile core cable (12) has the same diameter as the wire core (11), and the high-life tensile-resistant street light special environmental protection cable (1) is flat; the stranded steel wire (121) is composed of soft steel wires with a diameter of 0.15mm stranded together, and the first insulation layer (122) is made of EPDM rubber material.

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