Anti-interference flame-retardant cable

Abstract

The utility model relates to the technical field of cables, and discloses an anti-interference flame-retardant cable which comprises a wire core conductor, the outer surface of the wire core conductor is wrapped with a first insulating layer, the outer surface of the first insulating layer is wrapped with a heat-insulating layer, the outer surface of the heat-insulating layer is wrapped with a first flame-retardant layer, and the outer surface of the first flame-retardant layer is wrapped with a second flame-retardant layer. The outer surface of the first flame-retardant layer is wrapped with a first protective layer, the wire core conductor, the first insulating layer, the heat insulation layer, the first flame-retardant layer and the first protective layer form an inner cable protection device, and the inner cable protection device is spirally wound together. The inner protection device and the outer protection device are arranged, the inner protection device is spirally wound together, the inner protection device is more compact and not prone to moving, the inner protection device and the outer protection device enable the protection performance to be higher, the outer protection device is of a structure with the thickness gradually increased, the protection capacity of the device is gradually enhanced, and the service life of the device is prolonged. The protection capability is prevented from being reduced due to too small thickness, and the weight of the device is also prevented from being heavy due to too large thickness.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to an anti-interference and flame-retardant cable. Background Art

[0002] The existing cable can refer to the Chinese utility model patent with the authorization announcement number CN217788036U, which discloses an anti-interference and flame-retardant cable. "It includes a polyethylene insulating sleeve. Inside the polyethylene insulating sleeve, there are multiple cable bodies. Each cable body includes a conductor and a conductor protection layer. A copper wire braided shielding layer is connected to the periphery of the conductor, and a high-strength aluminum foil mylar anti-interference layer is connected to the periphery of the copper wire braided shielding layer. The conductor is used to transmit signals. The anti-interference layer is composed of a copper wire braided shielding layer, a high-strength aluminum foil mylar anti-interference layer, and a rubber insulating layer outside the conductor. The provided support frame is used to increase the support of the cable and prevent the cable conductor from being squeezed. The non-metallic polyester filler is filled inside the flame-retardant silica gel."

[0003] When the above device is in use, through the waterproof layer connected to the periphery of the flame-retardant silica gel, the protective layer connected to the periphery of the waterproof layer, and the wear-resistant layer connected to the periphery of the protective layer, through the waterproof layer, protective layer, and wear-resistant layer connected to the periphery of the flame-retardant silica gel, the cable is protected. However, the internal cables are relatively loose, which may cause the wire cores to be displaced, and the thickness of the outer protective shell is the same, resulting in poor protection effect on the internal cables. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an anti-interference and flame-retardant cable, which has the advantages of strong practicability and high safety, and solves the problems that the inner core of the cable is easy to be displaced and the protection effect on the internal cable is poor.

[0005] The utility model provides the following technical scheme: an anti-interference and flame-retardant cable, including a core conductor. The outer surface of the core conductor is wrapped with a first insulating layer. The outer surface of the first insulating layer is wrapped with a heat-insulating layer. The outer surface of the heat-insulating layer is wrapped with a first flame-retardant layer. The outer surface of the first flame-retardant layer is wrapped with a first protective layer. The core conductor, the first insulating layer, the heat-insulating layer, the first flame-retardant layer, and the first protective layer together form an internal cable protection device. The internal cable protection devices are spirally wound together to make the inside more compact and not easily displaced.

[0006] As a preferred technical scheme of the utility model, an anti-interference layer is provided on the side surface of the first protective layer. The outer surface of the anti-interference layer is wrapped with a second insulating layer. The outer surface of the second insulating layer is wrapped with a second flame-retardant layer. The outer surface of the second flame-retardant layer is wrapped with a second protective layer. The anti-interference layer, the second insulating layer, the second flame-retardant layer, and the second protective layer form an external cable protection device, which cooperates with the internal protection device to increase the protection ability.

[0007] As a preferred technical solution of the present utility model, the thicknesses of the anti-interference layer, the second insulating layer, the second flame-retardant layer, and the second protective layer gradually increase, so that the protection ability gradually enhances, avoiding the reduction of the protection ability due to too small thickness and also avoiding the large weight of the device due to too large thickness.

[0008] As a preferred technical solution of the present utility model, the first insulating layer and the second insulating layer are made of polypropylene material to endow them with excellent electrical properties and good high-temperature resistance.

[0009] As a preferred technical solution of the present utility model, the heat-insulating layer is made of glass fiber material, which has a high elastic modulus and good heat resistance.

[0010] As a preferred technical solution of the present utility model, the first flame-retardant layer and the second flame-retardant layer are made of low-smoke and halogen-free materials to endow them with characteristics such as low corrosion and low toxicity.

[0011] As a preferred technical solution of the present utility model, the first protective layer and the second protective layer are made of polyvinyl chloride material, which has strong chemical corrosion resistance, is not easily corroded by acids and alkalis, has good mechanical strength and electrical insulation, and is flame-retardant, with a flame-retardant value above forty.

[0012] As a preferred technical solution of the present utility model, the anti-interference layer is made of metal foil material so that it can completely cover the surface of the cable.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. For this anti-interference and flame-retardant cable, by providing two protection devices inside and outside, and spirally winding the inner protection device together, the inner protection device is made more compact and not easily displaced, and the two protection devices inside and outside make the protection performance of the cable stronger;

[0015] 2. For this anti-interference and flame-retardant cable, by setting the outer protection device into a structure with gradually increasing thickness, the protection ability of the device is also gradually enhanced, avoiding the reduction of the protection ability due to too small thickness and also avoiding the large weight of the device due to too large thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the present utility model;

[0019] In the figure: 1. Core conductor; 2. First insulating layer; 3. Heat-insulating layer; 4. First flame-retardant layer; 5. First protective layer; 6. Anti-interference layer; 7. Second insulating layer; 8. Second flame-retardant layer; 9. Second protective layer. Detailed implementation

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 3 , for an anti-interference and flame-retardant cable, a first insulating layer 2 is wrapped around the outer surface of the core conductor 1, a heat-insulating layer 3 is wrapped around the outer surface of the first insulating layer 2, a first flame-retardant layer 4 is wrapped around the outer surface of the heat-insulating layer 3, and a first protective layer 5 is wrapped around the outer surface of the first flame-retardant layer 4. The above-mentioned core conductor 1, first insulating layer 2, heat-insulating layer 3, first flame-retardant layer 4, and first protective layer 5 together form an inner cable protection device, and the inner cable protection device is spirally wound together to make the interior more compact and not prone to displacement.

[0022] Please refer to Figure 1 , an anti-interference layer 6 is provided on the side of the first protective layer 5, a second insulating layer 7 is wrapped around the outer surface of the anti-interference layer 6, a second flame-retardant layer 8 is wrapped around the outer surface of the second insulating layer 7, and a second protective layer 9 is wrapped around the outer surface of the second flame-retardant layer 8. The above-mentioned anti-interference layer 6, second insulating layer 7, second flame-retardant layer 8, and second protective layer 9 form an outer cable protection device, and cooperate with the inner protection device to increase the protection ability.

[0023] Please refer to Figure 2 , the thicknesses of the anti-interference layer 6, second insulating layer 7, second flame-retardant layer 8, and second protective layer 9 gradually increase, so as to gradually enhance the protection ability, avoiding the reduction of the protection ability due to too small thickness and also avoiding the large weight of the device due to too large thickness.

[0024] Please refer to Figure 1, both the first insulating layer 2 and the second insulating layer 7 are made of polypropylene material to endow them with superior electrical properties and good high-temperature resistance. The heat-insulating layer 3 is made of glass fiber material, which has a high elastic modulus and excellent heat resistance. Both the first flame-retardant layer 4 and the second flame-retardant layer 8 are made of low-smoke and halogen-free materials to endow them with characteristics such as low corrosion and low toxicity. Both the first protective layer 5 and the second protective layer 9 are made of polyvinyl chloride material, which has strong chemical corrosion resistance, is not easily corroded by acids and alkalis, has good mechanical strength and electrical insulation, and is flame-retardant, with a flame-retardant value above forty. The anti-interference layer 6 is made of metal foil material so that it can completely cover the surface of the cable.

[0025] Working principle: The core conductor 1 undertakes the role of conducting signals. The first insulating layer 2 on the outer surface of the core conductor 1 is made of polypropylene, thus achieving good electrical properties and high-temperature resistance and realizing the first-step insulation effect. Then, a heat-insulating layer 3 supported by glass fiber is arranged on the outer surface of the first insulating layer 2, which also has heat resistance. The first flame-retardant layer 4 on the outer surface of the heat-insulating layer 3 is made of low-smoke and halogen-free material, reducing the harm to the human body. The first protective layer 5 on the outer surface of the first flame-retardant layer 4 is made of polyvinyl chloride, thus enhancing the chemical corrosion resistance of the protection device and having a certain flame-retardant function. The inner protection devices are spirally wound together to make them more compact and not easily displaced. The anti-interference layer 6 outside the first protective layer 5 is made of metal foil. Metal foil is the only material that can completely cover the surface of the cable, realizing the anti-interference function. The second insulating layer 7, the second flame-retardant layer 8 and the second protective layer 9 outside the anti-interference layer 6 form the outer protection device, and their thicknesses gradually increase, making the protection performance of the outer protection device gradually enhanced, avoiding the reduction of the protection ability due to too small thickness and also avoiding the large weight of the device due to too large thickness.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-interference flame-retardant cable, comprising a core conductor (1), characterized in that: The outer surface of the wire core conductor (1) is wrapped with a first insulating layer (2), the outer surface of the first insulating layer (2) is wrapped with a heat insulation layer (3), the outer surface of the heat insulation layer (3) is wrapped with a first flame retardant layer (4), the outer surface of the first flame retardant layer (4) is wrapped with a first protective layer (5), the wire core conductor (1), the first insulating layer (2), the heat insulation layer (3), the first flame retardant layer (4) and the first protective layer (5) together constitute an inner cable protection device, and the inner cable protection device is spirally wound together.

2. The anti-interference flame-retardant cable according to claim 1, characterized in that: An anti-interference layer (6) is provided on the side of the first protective layer (5); the outer surface of the anti-interference layer (6) is wrapped with a second insulating layer (7); the outer surface of the second insulating layer (7) is wrapped with a second flame retardant layer (8); the outer surface of the second flame retardant layer (8) is wrapped with a second protective layer (9); the anti-interference layer (6), the second insulating layer (7), the second flame retardant layer (8) and the second protective layer (9) constitute an external cable protection device.

3. The anti-interference flame-retardant cable according to claim 2, characterized in that: The thicknesses of the anti-interference layer (6), the second insulating layer (7), the second flame-retardant layer (8), and the second protective layer (9) gradually increase, and the protective capability gradually increases.

4. The anti-interference flame-retardant cable according to claim 1, characterized in that: The first insulating layer (2) and the second insulating layer (7) are made of polypropylene material.

5. The anti-interference flame-retardant cable according to claim 1, characterized in that: The heat insulation layer (3) is made of glass fiber material.

6. The anti-interference flame-retardant cable according to claim 1, characterized in that: The first flame retardant layer (4) and the second flame retardant layer (8) are made of low-smoke halogen-free material.

7. The anti-interference flame-retardant cable according to claim 1, characterized in that: The first protective layer (5) and the second protective layer (9) are made of polyvinyl chloride material.

8. The anti-interference flame-retardant cable according to claim 2, characterized in that: The anti-interference layer (6) is made of metal foil material and can completely cover the surface of the cable.

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