Compression-resistant flame-retardant cable

Abstract

The utility model relates to a compression-resistant flame-retardant cable, which comprises two conductors, the outsides of the two conductors are coated with nano ceramic coatings, the outsides of the two nano ceramic coatings are fixedly provided with metal belts, and the metal belts are wound on the outsides of the nano ceramic coatings in a spiral manner. According to the compression-resistant flame-retardant cable, the two conductors are externally coated with the nano ceramic coatings, so that the high-temperature resistance and the insulation performance are remarkably improved, stable work in a high-temperature environment is ensured, the flame-retardant characteristic is enhanced, the metal belt is spirally wound outside the coatings, the mechanical strength and the compression resistance are enhanced, and the service life of the cable is prolonged. The grooves formed in the wrapping sleeve are tightly matched with the rubber protruding strips on the inner wall of the polyimide layer, the overall structural stability is improved, the steel wires in the rubber protruding strips enhance the stretch resistance, the arch-shaped steel wire mesh further improves the compression resistance, the cable can keep the shape and structural integrity when subjected to external force, and the service life of the cable is prolonged. The service life is prolonged; and the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a pressure-resistant and flame-retardant cable. Background Technology

[0002] As an important carrier for power transmission and signal control, cables play a vital role in various industrial, construction, transportation and energy fields. However, with the increasing complexity and diversification of application scenarios, especially in extreme environments such as rail transit and deep-sea exploration, cables not only need to have efficient power transmission capabilities, but also need to withstand enormous external pressure, high temperatures and potential fire threats.

[0003] Traditional cable designs often struggle to meet these stringent requirements simultaneously, particularly the trade-off between compressive strength and flame retardancy. Traditional cables typically use exposed copper or aluminum wires for their conductors, which have limited resistance to deformation and are prone to creep and breakage at high temperatures. Therefore, a compressive strength and flame retardant cable is proposed to address these issues. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a pressure-resistant and flame-retardant cable to overcome the deficiencies of the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pressure-resistant and flame-retardant cable includes two conductors, each of which is coated with a nano-ceramic coating. A metal strip is fixedly installed on the outside of each of the two nano-ceramic coatings. The metal strip is spirally wound around the outside of the nano-ceramic coating, with a crest spacing of 2 mm. A sheath is fixedly installed on the outside of the two metal strips. Two grooves are formed inside the sheath. A polyimide layer is fixedly installed on the outside of the sheath. Two rubber protrusions are fixedly installed on the inner wall of the polyimide layer. The two rubber protrusions are respectively embedded in the two grooves. A steel wire is fixedly installed inside each of the two rubber protrusions. Two arched steel wire meshes are fixedly installed inside the sheath, located on the outside of the two metal strips.

[0007] The beneficial effects of this utility model are as follows: The cable design significantly improves high temperature resistance and insulation performance by coating the two conductors with a nano-ceramic coating, ensuring stable operation in high-temperature environments and enhancing flame retardant properties. The metal strip is spirally wound around the outside of the coating, enhancing mechanical strength and compressive strength. The grooves inside the sheath fit tightly with the rubber protrusions on the inner wall of the polyimide layer, improving the overall structural stability. The steel wires inside the rubber protrusions enhance tensile strength, while the arched steel wire mesh further improves compressive strength, enabling the cable to maintain its shape and structural integrity when subjected to external forces, extending its service life and improving safety.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a flame-retardant buffer layer is fixedly installed on the outside of the polyimide layer, and a gradient foaming insulation system is provided on the outside of the flame-retardant buffer layer. The flame-retardant buffer layer adopts a mixed fiber structure and is embedded with microencapsulated flame retardant.

[0010] Furthermore, the flame-retardant buffer layer has a mixed fiber structure formed by mixing aramid fibers and basalt fibers in a certain proportion to form a three-dimensional mesh structure, and the microencapsulated flame retardant has a particle size of 20-50μm.

[0011] Furthermore, the gradient foam insulation system includes a cross-linked polyethylene layer fixedly installed outside the flame-retardant buffer layer, a silicone rubber layer incorporating graphene bubbles fixedly installed outside the cross-linked polyethylene layer, and a biomimetic pressure-resistant armor layer provided outside the silicone rubber layer.

[0012] Furthermore, the biomimetic pressure-resistant armor layer draws inspiration from the structure of biological scales, comprising a bottom layer and a top layer. The bottom layer is made of fiber cloth impregnated with resin, and the top layer is made of ceramic sheets arranged in a tile-like pattern.

[0013] Furthermore, the bottom layer of the biomimetic pressure-resistant armor layer is basalt fiber cloth impregnated with silicone resin, and the surface layer is a hexagonal ceramic sheet with a side length of, for example, 3 mm. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the pressure-resistant and flame-retardant cable of this utility model;

[0015] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0016] Figure 3 This is a schematic diagram of the top structure of the pressure-resistant and flame-retardant cable of this utility model;

[0017] Figure 4 This is a schematic diagram of the sheath structure.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Conductor; 2. Nano-ceramic coating; 3. Metal strip; 4. Encapsulation sleeve; 5. Groove; 6. Polyimide layer; 7. Rubber ridge; 8. Steel wire; 9. Arched steel wire mesh; 10. Flame-retardant buffer layer; 11. Microencapsulated flame retardant; 12. Cross-linked polyethylene layer; 13. Silicone rubber layer; 14. Bionic pressure-resistant armor layer. Detailed Implementation

[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0021] Example 1, such as Figures 1-4 As shown, a pressure-resistant and flame-retardant cable includes two conductors 1, each conductor 1 is covered with a nano-ceramic coating 2, and a metal strip 3 is fixedly installed on the outside of each nano-ceramic coating 2. The metal strip 3 is spirally wound on the outside of the nano-ceramic coating 2, and the peak spacing of the metal strip 3 is 2 mm. A sheath 4 is fixedly installed on the outside of the two metal strips 3. The sheath 4 has two grooves 5 inside, and a polyimide layer 6 is fixedly installed on the outside of the sheath 4. Two rubber protrusions 7 are fixedly installed on the inner wall of the polyimide layer 6. The two rubber protrusions 7 are respectively embedded in the two grooves 5. A steel wire 8 is fixedly installed inside each of the two rubber protrusions 7. Two arched steel wire meshes 9 are fixedly installed inside the sheath 4, and the two arched steel wire meshes 9 are respectively located on the outside of the two metal strips 3.

[0022] By applying a nano-ceramic coating 2 to both conductors 1, the high-temperature resistance and insulation performance of the cable are effectively improved, enabling the cable to maintain stable operation even in high-temperature environments. This also enhances the cable's flame-retardant properties. The metal strip 3 is spirally wound around the outside of the nano-ceramic coating 2 with a 2mm crest spacing. This design not only enhances the cable's mechanical strength but also improves its compressive strength, contributing to long-term stable operation. The groove 5 inside the sheath 4 engages with the rubber protrusions 7 on the inner wall of the polyimide layer 6. The rubber protrusions 7 are embedded within the groove 5, making the connection between the polyimide layer 6 and the sheath 4 tighter and improving the overall structural stability of the cable. Simultaneously, the steel wire 8 inside the rubber protrusions 7 enhances the cable's tensile strength. The arched steel wire mesh 9 fixedly installed inside the sheath 4, located outside the metal strip 3, further enhances the cable's compressive strength, allowing the cable to better maintain its shape and structural integrity when subjected to external pressure, thus improving the cable's service life and safety.

[0023] Example 2, as Figures 1-3As shown, this embodiment is a further improvement based on embodiment 1, and its specific details are as follows:

[0024] A flame-retardant buffer layer 10 is fixedly installed on the outside of the polyimide layer 6. A gradient foaming insulation system is provided on the outside of the flame-retardant buffer layer 10. The flame-retardant buffer layer 10 adopts a mixed fiber structure and is embedded with microencapsulated flame retardant 11.

[0025] This configuration, by fixing the flame-retardant buffer layer 10 to the outside of the polyimide layer 6, significantly improves the flame-retardant performance of the cable, providing an additional safety barrier for the cable. The microencapsulated flame retardant 11 not only enhances the fire resistance of the cable, but also responds quickly in the event of a fire, releasing the flame retardant to slow the spread of the fire and buy precious time for escape and rescue.

[0026] Example 3, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 2, and its specific details are as follows:

[0027] The flame-retardant buffer layer 10 has a mixed fiber structure formed by aramid fibers and basalt fibers mixed in a certain proportion to form a three-dimensional network structure, and the microencapsulated flame retardant 11 has a particle size of 20-50μm.

[0028] This configuration allows aramid fibers, with their high strength, high modulus, and high temperature resistance, to provide excellent mechanical support and heat protection for the cable. Basalt fibers, with their good insulation properties and chemical stability, further enhance the cable's safety and service life. In addition, the microencapsulated flame retardant 11 has a particle size of 20-50μm, which ensures that the flame retardant can be evenly distributed in the fiber structure and respond quickly in the event of a fire, releasing flame-retardant components to slow the spread of fire.

[0029] Example 4, as Figures 1-3 As shown, this embodiment is a further improvement based on embodiment 2, and its specific details are as follows:

[0030] The gradient foam insulation system includes a cross-linked polyethylene layer 12 fixedly installed on the outside of the flame-retardant buffer layer 10, a silicone rubber layer 13 incorporating graphene bubbles fixedly installed on the outside of the cross-linked polyethylene layer 12, and a biomimetic pressure-resistant armor layer 14 disposed on the outside of the silicone rubber layer 13.

[0031] This design provides multiple layers of protection for the cable through a gradient foam insulation system: the cross-linked polyethylene layer 12 covering the flame-retardant buffer layer 10 has excellent electrical insulation and heat resistance, effectively preventing current leakage; the outermost layer is a silicone rubber layer 13 doped with graphene bubbles, which enhances thermal conductivity, mechanical strength and heat dissipation efficiency, while also improving insulation performance; the outermost layer is a biomimetic pressure-resistant armor layer 14, which mimics the hard shell of a biological organism, providing strong pressure and impact resistance, protecting the cable from external damage, extending its service life and improving safety.

[0032] Example 5, as Figure 1 and Figure 3 As shown, this embodiment is a further improvement based on embodiment 4, and its specific details are as follows:

[0033] The biomimetic pressure-resistant armor layer 14 is designed with reference to the structure of biological scales, including a bottom layer and a top layer. The bottom layer is made of fiber cloth impregnated with resin, and the top layer is made of ceramic sheets arranged in a tile-like pattern.

[0034] With this design, the bottom layer of the biomimetic pressure-resistant armor layer 14 is made of fiber cloth impregnated with resin material. This structure is not only lightweight and high-strength, but also has good flexibility and adhesion, which can effectively bond and protect the inner silicone rubber layer 13, while enhancing the stability of the overall structure. The surface layer is made of ceramic sheets arranged in a tile-like pattern, which further improves the durability and service life of the cable.

[0035] Example 6, as Figure 1 and Figure 3 As shown, this embodiment is a further improvement based on embodiment 5, and its specific details are as follows:

[0036] The bottom layer of the biomimetic pressure-resistant armor layer 14 is basalt fiber cloth impregnated with silicone resin, and the surface layer is a hexagonal ceramic sheet with a side length of, for example, 3mm.

[0037] With this design, the biomimetic pressure-resistant armor layer 14 uses basalt fiber cloth impregnated with silicone resin as the bottom layer, which significantly improves the strength and toughness of the cable. The surface layer uses hexagonal ceramic sheets. This design is not only aesthetically pleasing, but also has excellent pressure and impact resistance.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A compression-resistant, flame-retardant cable comprising a number of two conductors (1), characterized in that: Two said conductor (1) are covered with nanometer ceramic coating (2) outside, two said nanometer ceramic coating (2) are fixedly installed with metal band (3) outside, the metal band (3) is spirally wound outside nanometer ceramic coating (2), the peak distance of the metal band (3) is 2mm, two said metal band (3) are fixedly installed with wrapping sleeve (4) outside, the inside of the wrapping sleeve (4) is provided with two recesses (5), the outside of the wrapping sleeve (4) is fixedly installed with polyimide layer (6), the inner wall of the polyimide layer (6) is fixedly installed with two rubber ribs (7), two said rubber ribs (7) are respectively embedded in the inside of two recesses (5), the inside of two said rubber ribs (7) are fixedly installed with steel wire (8), the inside of the wrapping sleeve (4) is fixedly installed with two arched steel wire mesh (9), two said arched steel wire mesh (9) are respectively located outside two metal band (3).

2. A crush resistant, flame resistant electrical cable according to claim 1, wherein: The outside of the polyimide layer (6) is fixedly installed with a flame-retardant buffer layer (10), the outside of the flame-retardant buffer layer (10) is provided with a gradient foaming insulation system, the flame-retardant buffer layer (10) adopts a mixed fiber structure and is embedded with a microencapsulated flame retardant (11).

3. A crush resistant, flame resistant electrical cable according to claim 2, wherein: The mixed fiber structure of the flame-retardant buffer layer (10) is formed by mixing aramid fiber and basalt fiber in a certain proportion to form a three-dimensional network structure, and the particle size of the microencapsulated flame retardant (11) is 20-50μm.

4. A crush resistant, flame resistant electrical cable according to claim 2, wherein: The gradient foaming insulation system comprises a crosslinked polyethylene layer (12) fixedly installed outside the flame-retardant buffer layer (10), a silicon rubber layer (13) doped with graphene bubbles is fixedly installed outside the crosslinked polyethylene layer (12), and a biomimetic compression armor layer (14) is arranged outside the silicon rubber layer (13).

5. A crush resistant, flame resistant electrical cable according to claim 4, wherein: The biomimetic compression armor layer (14) is designed by referring to the structure of biological scales, comprising a bottom layer and a surface layer, the bottom layer is a fiber cloth impregnated with resin, and the surface layer is a ceramic sheet arranged in a shingle shape.

6. A crush resistant, flame resistant electrical cable according to claim 5, wherein: The bottom layer of the biomimetic compression armor layer (14) is a basalt fiber cloth impregnated with silicone resin, and the surface layer is a hexagonal ceramic sheet, for example, the side length of the ceramic sheet is 3mm.

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