Cable with flame-retardant and explosion-proof structure

Abstract

The utility model relates to the technical field of flame-retardant cables, and discloses a cable with a flame-retardant and explosion-proof structure, which comprises a conductor, a composite insulating layer, a flame-retardant layer, an explosion-proof layer and an outer sheath layer. According to the cable with the flame-retardant and explosion-proof structure, the conductors are of a multi-core structure and are guided and fixed through the guide columns, stable arrangement of the conductors and the overall strength of the cable are ensured, the composite insulating layer is of a multi-layer design and comprises the inner insulating layer, the shielding layer and the outer insulating layer, the inner insulating layer is made of XLPE materials, and the shielding layer is made of flame-retardant and explosion-proof materials. The cable has excellent electrical insulation performance and heat resistance, the flame-retardant layer is made of a composite material of an inorganic flame retardant and high-temperature-resistant fibers, fire spreading is effectively inhibited, the explosion-proof layer is formed by spirally and tightly winding titanium alloy wires, the impact resistance and pressure resistance of the cable are enhanced, the safety of the cable in a severe environment is improved, the outer sheath layer is made of a CPE material, and the service life of the cable is prolonged. The cable has excellent weather resistance and mechanical strength, and the service life of the cable is further prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of flame-retardant cables, and specifically relates to a cable with a flame-retardant and explosion-proof structure. Background Art

[0002] Cables are important components widely used in fields such as power transmission, communication, and data transmission. Their structural design and material selection directly affect the performance, safety, and service life of the cables.

[0003] However, traditional cable designs have some deficiencies in certain specific application scenarios. Firstly, the insulation layer materials of traditional cables are prone to thermal aging, combustion, or melting under high temperatures or fires, resulting in the loss of insulation performance of the cables, thereby triggering electrical failures or fire accidents. Secondly, traditional cables are prone to damage or breakage when subjected to external impacts or pressures, leading to cable failure. In addition, traditional cables also have certain limitations in dealing with harsh environments such as strong corrosion and high temperatures. Therefore, a cable with a flame-retardant and explosion-proof structure is proposed to solve the above-mentioned problems. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides a cable with a flame-retardant and explosion-proof structure, which has excellent electrical insulation performance, flame-retardant and explosion-proof capabilities, and environmental adaptability, etc., and solves the problem that traditional cables are prone to failure under high temperatures, fires, external impacts, and harsh environments.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A cable with a flame-retardant and explosion-proof structure includes a conductor, a composite insulation layer, a flame-retardant layer, an explosion-proof layer, and an outer sheath layer. The composite insulation layer, the flame-retardant layer, the explosion-proof layer, and the outer sheath layer are sequentially wrapped outside the conductor;

[0009] The conductor is of a multi-core structure and guide posts are arranged outside it. A support layer is filled between the composite insulation layer and the conductor and the guide posts.

[0010] As a preferred technical solution of the utility model, the cross-section of the guide post is in the shape of a regular polygon with parts cut off at each corner. The number of its sides is the same as the number of conductor cores, and the cut-off parts at each corner are clamped with the conductor.

[0011] As a preferred technical solution of the utility model, the material of the support layer is polypropylene and polyethylene, and the composite insulation layer is composed of an inner insulation layer, a shielding layer, and an outer insulation layer.

[0012] As a preferred technical solution of the present utility model, the materials of the inner insulating layer, the shielding layer and the outer insulating layer are XLPE, semi-conductive rubber and PVC respectively.

[0013] As a preferred technical solution of the present utility model, the material of the explosion-proof layer is titanium alloy wire.

[0014] As a preferred technical solution of the present utility model, the explosion-proof layer is spirally and tightly wound around the outside of the flame-retardant layer, and the material of the outer sheath layer is CPE material.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present utility model provides a cable with a flame-retardant and explosion-proof structure, having the following beneficial effects:

[0017] For the cable with a flame-retardant and explosion-proof structure, by adopting a multi-core structure for the conductor and guiding and fixing through the guiding columns, the stable arrangement of the conductor and the overall strength of the cable are ensured. The composite insulating layer adopts a multi-layer design, including an inner insulating layer, a shielding layer and an outer insulating layer. Among them, the inner insulating layer uses XLPE material, which has excellent electrical insulation performance and heat resistance. The shielding layer adopts semi-conductive rubber, which effectively prevents electromagnetic interference. The outer insulating layer uses PVC, which provides good mechanical protection and electrical insulation. The support layer is filled between the insulating layer, the conductor and the guiding columns, and uses materials such as polypropylene and polyethylene, which provides necessary mechanical support and prevents the cable from deforming. The flame-retardant layer uses a composite material of inorganic flame retardant and high-temperature resistant fiber, which effectively inhibits the spread of fire and protects the cable from the threat of fire. The explosion-proof layer is spirally and tightly wound with titanium alloy wire, which enhances the impact resistance and compressive resistance of the cable and improves the safety of the cable in harsh environments. Finally, the outer sheath layer uses CPE material, which has excellent weather resistance and mechanical strength, further enhancing the service life of the cable. Generally speaking, this cable with a flame-retardant and explosion-proof structure, through its unique design and material selection, effectively solves the failure problems of traditional cables under high temperature, fire, external impact and harsh environments, and provides a safer and more reliable cable solution for fields such as power transmission, communication and data transmission. Brief description of the drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model.

[0019] Figure 2 It is a schematic structural diagram of the connection between the flame-retardant layer and the explosion-proof layer of the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the insulating layer of the present utility model.

[0021] In the figure: 1. Conductor; 2. Guide post; 3. Support layer; 4. Insulation layer; 401. Inner insulation layer; 402. Shielding layer; 403. Outer insulation layer; 5. Flame-retardant layer; 6. Explosion-proof layer; 7. Outer sheath layer. Detailed implementation manner

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Please refer to Figures 1-3 , a cable with a flame-retardant and explosion-proof structure, including a conductor 1, a composite insulation layer 4, a flame-retardant layer 5, an explosion-proof layer 6, and an outer sheath layer 7. The composite insulation layer 4, the flame-retardant layer 5, the explosion-proof layer 6, and the outer sheath layer 7 are sequentially wrapped outside the conductor 1;

[0026] The conductor 1 is a multi-core structure and a guide post 2 is arranged outside it. A support layer 3 is filled between the composite insulation layer 4 and the conductor 1 and the guide post 2;

[0027] In this embodiment, the cross-section of the guide post 2 is the shape after cutting off a part of each corner of a regular polygon, the number of its sides is the same as the number of cores of the conductor 1, and the cut-off parts of each corner are clamped with the conductor 1.

[0028] It should be noted that the cross-section of the guide post 2 is designed in the shape of a regular polygon with parts cut off at each corner, which not only forms a stable clamping relationship between the guide post 2 and the conductor 1, but also reduces the area of the guide post 2 while ensuring the clamping stability, which is beneficial to saving materials.

[0029] In this embodiment, the material of the support layer 3 is polypropylene and polyethylene, and the forehead support and the insulating layer 4 are composed of an inner insulating layer 401, a shielding layer 402 and an outer insulating layer 403.

[0030] It should be noted that the support layer 3 is made of materials such as polypropylene and polyethylene, which provide the necessary mechanical support for the cable. These materials have good toughness and anti-deformation ability, and can effectively prevent the cable from deforming when subjected to external pressure or tension, thus ensuring the stability and reliability of the cable.

[0031] In this embodiment, the materials of the inner insulating layer 401, the shielding layer 402 and the outer insulating layer 403 are XLPE, semi-conductive rubber and PVC respectively.

[0032] It should be noted that the composite insulating layer 4 is composed of an inner insulating layer 401, a shielding layer 402 and an outer insulating layer 403, forming a multi-layer electrical insulation system. The XLPE material of the inner insulating layer 401 ensures excellent electrical insulation performance and heat resistance of the cable; the semi-conductive rubber material of the shielding layer 402 effectively prevents electromagnetic interference; the PVC material of the outer insulating layer 403 provides good mechanical protection and electrical insulation.

[0033] In this embodiment, the material of the flame retardant layer 5 is a composite material of inorganic flame retardant and high temperature resistant fiber, and the material of the explosion-proof layer 6 is titanium alloy wire.

[0034] It should be noted that the flame retardant layer 5 uses a composite material of inorganic flame retardant and high temperature resistant fiber. This material can release flame retardant at high temperature to form a protection barrier, effectively inhibiting the spread of fire. The explosion-proof layer 6 uses titanium alloy wire to be helically and tightly wound outside the flame retardant layer, which not only enhances the impact resistance and compressive resistance of the cable, but also improves the safety of the cable in harsh environments.

[0035] In this embodiment, the explosion-proof layer 6 is helically and tightly wound outside the flame retardant layer 5, and the material of the outer sheath layer 7 is CPE material.

[0036] It should be noted that the outer sheath layer 7 uses CPE material. CPE has excellent weather resistance and mechanical strength, can resist the erosion and damage of the external environment, and thus further improves the service life of the cable. The selection of CPE material also ensures that the cable can maintain stable performance in harsh environments such as outdoors.

[0037] Beneficial effects:

[0038] The cable with a flame-retardant and explosion-proof structure has a multi-core structure for the conductor 1 and is guided and fixed by the guide post 2, ensuring the stable arrangement of the conductors and the overall strength of the cable. The composite insulation layer 4 adopts a multi-layer design, including an inner insulation layer 401, a shielding layer 402, and an outer insulation layer 403. The inner insulation layer 401 is made of XLPE material, having excellent electrical insulation performance and heat resistance. The shielding layer 402 is made of semi-conductive rubber, effectively preventing electromagnetic interference. The outer insulation layer 403 uses PVC, providing good mechanical protection and electrical insulation. The support layer 3 is filled between the insulation layer 4, the conductor 1, and the guide post 2, made of materials such as polypropylene and polyethylene, providing necessary mechanical support and preventing the cable from deforming. The flame-retardant layer 5 uses a composite material of inorganic flame retardant and high-temperature-resistant fiber, effectively suppressing the spread of fire and protecting the cable from the threat of fire. The explosion-proof layer 6 is tightly wound with titanium alloy wires in a spiral shape, enhancing the impact resistance and compressive resistance of the cable and improving the safety of the cable in harsh environments. Finally, the outer sheath layer 7 is made of CPE material, having excellent weather resistance and mechanical strength, further extending the service life of the cable. Overall, this cable with a flame-retardant and explosion-proof structure, through its unique design and material selection, effectively solves the failure problems of traditional cables under high temperature, fire, external impact, and harsh environments, providing a safer and more reliable cable solution for fields such as power transmission, communication, and data transmission.

[0039] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cable with a flame retardant and explosion-proof structure, comprising a conductor (1), a composite insulation layer (4), a flame retardant layer (5), an explosion-proof layer (6) and an outer sheath layer (7), wherein the composite insulation layer (4), the flame retardant layer (5), the explosion-proof layer (6) and the outer sheath layer (7) are sequentially wrapped around the outside of the conductor (1); Features: The conductor (1) is a multi-core structure and is provided with a guide column (2) on the outside thereof, and a support layer (3) is filled between the composite insulating layer (4) and the conductor (1) and the guide column (2).

2. The cable with flame retardant and explosion proof structure according to claim 1, characterized in that: The cross section of the guide column (2) is a shape obtained by cutting off a portion of each corner of a regular polygon, the number of its sides is consistent with the number of cores of the conductor (1), and the cut-off portions of each corner are snap-fitted with the conductor (1).

3. The cable with flame retardant and explosion proof structure according to claim 1, characterized in that: The support layer (3) is made of polypropylene and polyethylene, and the composite insulation layer (4) is composed of an inner insulation layer (401), a shielding layer (402), and an outer insulation layer (403).

4. The cable with flame retardant and explosion proof structure according to claim 3, characterized in that: The materials of the inner insulating layer (401), the shielding layer (402) and the outer insulating layer (403) are XLPE, semi-conductive rubber and PVC, respectively.

5. The cable with flame retardant and explosion proof structure according to claim 1, characterized in that: The material of the explosion-proof layer (6) is titanium alloy wire.

6. The cable with flame retardant and explosion proof structure according to claim 5, characterized in that: The explosion-proof layer (6) is tightly spirally wound around the outside of the flame-retardant layer (5), and the outer sheath layer (7) is made of CPE material.

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