Composite fireproof cable

Abstract

The utility model relates to the technical field of fireproof cables, and discloses a composite fireproof cable which comprises a metal hose, an inner layer assembly used for insulation protection is installed on the outer side of the metal hose, and an outer layer assembly used for fireproof protection is installed on the outer side of the inner layer assembly. The inner side of the metal hose is fixedly provided with wire cores which are uniformly distributed, the outer layer assembly comprises a heat insulation layer, the outer side of the heat insulation layer is fixedly connected with a heat insulation coating layer, the outer side of the heat insulation coating layer is fixedly connected with an anti-corrosion layer, the outer side of the anti-corrosion layer is fixedly connected with a halogen-free low-smoke flame-retardant polyolefin layer, and the outer side of the anti-corrosion layer is fixedly connected with a halogen-free low-smoke flame-retardant polyolefin layer. The outer side of the halogen-free low-smoke flame-retardant polyolefin layer is fixedly connected with an ethylene propylene diene monomer layer. According to the composite fireproof cable, the aging resistance, the wear resistance, the fire resistance and the insulativity of the whole cable can be improved, the outer layer of the fireproof cable is not prone to aging in the actual use process, the protection effect is achieved on the inner layer, and the practicability of the composite fireproof cable is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof cables, in particular to a composite fireproof cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals. It is usually made of one or more mutually insulated conductors and an outer insulating protective layer. It is a wire that can transmit electricity or information from one place to another, and plays a very important role in scenarios such as power transmission or information transmission.

[0003] According to a composite fireproof cable disclosed in Chinese Patent Publication No. CN210403238U, the patent can make the cable have good strength and fireproof performance through the coordinated use of mica paper, polyester film and glass cloth, and achieve fireproof and flame-retardant effects, which is very effective. However, the patent still has some shortcomings in actual use. In the patent, the outermost side of the cable is provided with an anti-ultraviolet halogen-free low-smoke polyolefin sheath. Although it can play an environmental protection and safety role, its anti-aging and wear resistance are insufficient. When used for a long time, it is easy to cause wear and corrosion of the anti-ultraviolet halogen-free low-smoke polyolefin sheath, resulting in the exposure of the inner structure to the outside world, which leads to a certain room for improvement in the practicality of the existing composite fireproof cable. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a composite fireproof cable, which has the advantages of improving the overall aging resistance, wear resistance, fire resistance and insulation of the cable, and solves the problem of insufficient aging resistance of the existing composite fireproof cables.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of improving the overall aging resistance, wear resistance, fire resistance and insulation of the cable, the utility model provides the following technical solutions: a composite fireproof cable, comprising a metal hose, an inner layer component for insulation protection is installed on the outside of the metal hose, an outer layer component for fire protection is installed on the outside of the inner layer component, and a uniformly distributed wire core is fixedly installed on the inside of the metal hose;

[0008] The outer layer component includes a thermal insulation layer, a thermal insulation coating layer is fixedly connected to the outer side of the thermal insulation coating layer, an anti-corrosion layer is fixedly connected to the outer side of the anti-corrosion layer, a halogen-free low-smoke flame-retardant polyolefin layer is fixedly connected to the outer side of the halogen-free low-smoke flame-retardant polyolefin layer, an EPDM rubber layer is fixedly connected to the outer side of the EPDM rubber layer, and a high-temperature resistant coating layer is fixedly connected to the outer side of the EPDM rubber layer.

[0009] Furthermore, the inner layer component includes a glass cloth layer fixedly connected to the outside of the metal hose, the outside of the glass cloth layer is fixedly connected to a polyester film layer, the outside of the polyester film layer is fixedly connected to a natural rubber layer, and the outside of the natural rubber layer is fixedly connected to a butyl rubber layer.

[0010] Furthermore, the number of the wire cores is not less than one, the evenly distributed wire cores are bonded to each other, and the anti-corrosion layer is an epoxy resin layer.

[0011] Furthermore, the thermal insulation coating layer is a polyurethane waterproof thermal insulation coating, and the high temperature resistant coating layer is a heterocyclic polymer coating.

[0012] Furthermore, the inner side of the heat insulation layer is in contact with the outer side of the butyl rubber layer and is fixedly connected by bonding.

[0013] Furthermore, the glass cloth layer, polyester film layer, natural rubber layer, butyl rubber layer, heat insulation layer, anti-corrosion layer, halogen-free low-smoke flame-retardant polyolefin layer, and EPDM rubber layer are all in the shape of circular tubes.

[0014] Furthermore, the centers of the glass cloth layer, polyester film layer, natural rubber layer, butyl rubber layer, thermal insulation layer, anti-corrosion layer, halogen-free low-smoke flame-retardant polyolefin layer, and EPDM rubber layer are the same.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a composite fireproof cable, which has the following beneficial effects:

[0017] The composite fireproof cable can improve the overall aging resistance, wear resistance, fire resistance and insulation of the cable through the coordinated use of the inner layer component and the outer layer component outside the metal hose. Therefore, in actual use, the outer layer of the fireproof cable is not easy to age, which plays a protective role for the inner layer. At the same time, it can also play an effective heat-insulating role, making it difficult for heat to be transferred, thereby effectively improving the practicality of the composite fireproof cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the structure of the utility model;

[0020] Figure 3 It is a cross-sectional view of the inner layer component connection structure in the structure of the utility model.

[0021] In the figure: 1 metal hose, 200 inner layer component, 201 glass cloth layer, 202 polyester film layer, 203 natural rubber layer, 204 butyl rubber layer, 300 outer layer component, 301 thermal insulation layer, 302 thermal insulation coating layer, 303 anti-corrosion layer, 304 halogen-free low-smoke flame-retardant polyolefin layer, 305 EPDM rubber layer, 306 high temperature resistant coating layer, 4 wire cores. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 The utility model provides a technical solution: a composite fireproof cable, comprising a metal hose 1, an inner layer component 200 for insulation protection is installed on the outer side of the metal hose 1, an outer layer component 300 for fire protection is installed on the outer side of the inner layer component 200, and a uniformly distributed wire core 4 is fixedly installed on the inner side of the metal hose 1. Through the coordinated use of the inner layer component 200 and the outer layer component 300 on the outer side of the metal hose 1, the overall aging resistance, wear resistance, fire resistance and insulation of the cable can be improved, so that the outer layer of the fireproof cable is not easy to age during actual use, and the inner layer is protected. At the same time, it can also play an effective heat-insulating role, making it difficult for heat to be transferred, thereby effectively improving the practicality of the composite fireproof cable.

[0024] In this embodiment, the outer layer component 300 is a structure used to have fire prevention, flame retardancy, anti-aging, corrosion resistance and other properties.

[0025] like Figure 1 and Figure 2 As shown, the outer layer component 300 includes a thermal insulation layer 301, a thermal insulation coating layer 302 is fixedly connected to the outer side of the thermal insulation coating layer 301, an anti-corrosion layer 303 is fixedly connected to the outer side of the thermal insulation coating layer 302, a halogen-free low-smoke flame-retardant polyolefin layer 304 is fixedly connected to the outer side of the anti-corrosion layer 303, an EPDM rubber layer 305 is fixedly connected to the outer side of the halogen-free low-smoke flame-retardant polyolefin layer 304, the EPDM rubber layer 305 has excellent properties such as ozone resistance, heat resistance, weather resistance, and aging resistance, and a high-temperature resistant coating layer 306 is fixedly connected to the outer side of the EPDM rubber layer 305.

[0026] It should be noted that the number of wire cores 4 is not less than one, and the evenly distributed wire cores 4 fit together. During the production process, the inner diameter of the metal hose 1 is adjusted according to the number of wire cores 4 so that the wire cores 4 can maintain a stable state. The anti-corrosion layer 303 is an epoxy resin layer, which can play a good anti-corrosion role.

[0027] In addition, the thermal insulation coating layer 302 is a polyurethane waterproof thermal insulation coating. The thermal insulation coating layer 302 can also be other coatings with waterproof and thermal insulation effects. The high temperature resistant coating layer 306 is a heterocyclic polymer coating, which can have good high temperature resistance. At the same time, the high temperature resistant coating layer 306 can also be other coatings with high temperature resistance and not easy to break and detach within a certain impact.

[0028] In this embodiment, the inner layer component 200 is a structure used to provide properties such as pressure resistance, puncture resistance, and insulation.

[0029] like Figure 1 and Figure 3 As shown, the inner layer component 200 includes a glass cloth layer 201 fixedly connected to the outside of the metal hose 1, a polyester film layer 202 fixedly connected to the outside of the glass cloth layer 201, a natural rubber layer 203 fixedly connected to the outside of the polyester film layer 202, and a butyl rubber layer 204 fixedly connected to the outside of the natural rubber layer 203. Butyl rubber has good mechanical strength, high temperature resistance and low temperature elasticity. Butyl rubber has good electrical insulation performance, is not easy to age and harden, and has good oil resistance and chemical resistance, so that the butyl rubber layer 204 has insulation and heat resistance and other characteristics.

[0030] It should be noted that the inner side of the thermal insulation layer 301 is in contact with the outer side of the butyl rubber layer 204 and is fixedly connected by bonding, so that the outer layer component 300 can provide fireproof, heat-insulating and flame-retardant services to the inner structure, wherein the connection between the layers can be bonding, thereby facilitating the production of fireproof cables.

[0031] In addition, the glass cloth layer 201, the polyester film layer 202, the natural rubber layer 203, the butyl rubber layer 204, the heat insulation layer 301, the anti-corrosion layer 303, the halogen-free low-smoke flame-retardant polyolefin layer 304, and the EPDM rubber layer 305 are all in the shape of circular tubes, and the center of the glass cloth layer 201, the polyester film layer 202, the natural rubber layer 203, the butyl rubber layer 204, the heat insulation layer 301, the anti-corrosion layer 303, the halogen-free low-smoke flame-retardant polyolefin layer 304, and the EPDM rubber layer 305 are the same, so that the fire-proof cable has good aesthetics as a whole, and at the same time, the regular structure can provide normal and effective fire prevention, flame retardancy, anti-aging and other properties for the core 4.

[0032] The working principle of the above embodiment is:

[0033] In actual use of the composite fireproof cable, the high temperature resistant coating layer 306 can make the EPDM rubber layer 305 have anti-aging and wear resistance while greatly increasing the high temperature resistance, thereby isolating the burning of the flame from the outside. When the EPDM rubber layer 305 is broken, it can continue to play an excellent flame retardant function under the action of the halogen-free low-smoke flame retardant polyolefin layer 304, and can protect the inner structure under the action of the anti-corrosion layer 303. The cooperation between the heat insulation layer 301 and the heat insulation coating layer 302 can effectively prevent the burning of the flame. The transfer of heat can be stopped without causing excessive impact on the wire core 4. The cooperation between the natural rubber layer 203 and the butyl rubber layer 204 can play a very effective insulating effect. The cooperation between the glass cloth layer 201 and the polyester film layer 202 can provide the wire core 4 with heat-insulating, heat-resistant, fire-retardant properties. At the same time, the cooperation between the metal hose 1 and the polyester film layer 202 can provide the wire core 4 with anti-extrusion and puncture resistance, which effectively protects the wire core 4 and allows data to be continuously and normally transmitted through the wire core 4.

[0034] Compared with the prior art, the composite fireproof cable, through the coordinated use of the inner layer component 200 and the outer layer component 300 on the outside of the metal hose 1, can improve the overall aging resistance, wear resistance, fire resistance and insulation of the cable, so that the outer layer of the fireproof cable is not easy to age during actual use, and plays a protective role for the inner layer. At the same time, it can also play an effective heat-insulating role, making it difficult for heat to be transferred, thereby effectively improving the practicality of the composite fireproof cable and solving the problem of insufficient aging resistance of the existing composite fireproof cable.

[0035] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A composite fireproof cable, comprising a metal hose (1), characterized in that: An inner layer component (200) for insulation protection is installed on the outer side of the metal hose (1), an outer layer component (300) for fire protection is installed on the outer side of the inner layer component (200), and evenly distributed wire cores (4) are fixedly installed on the inner side of the metal hose (1); The outer layer component (300) comprises a heat insulation layer (301), a heat insulation coating layer (302) is fixedly connected to the outer side of the heat insulation layer (301), an anti-corrosion layer (303) is fixedly connected to the outer side of the heat insulation coating layer (302), a halogen-free low-smoke flame-retardant polyolefin layer (304) is fixedly connected to the outer side of the anti-corrosion layer (303), an ethylene propylene diene monomer rubber layer (305) is fixedly connected to the outer side of the halogen-free low-smoke flame-retardant polyolefin layer (304), and a high-temperature resistant coating layer (306) is fixedly connected to the outer side of the ethylene propylene diene monomer rubber layer (305).

2. A composite fireproof cable according to claim 1, characterized in that: The inner layer component (200) comprises a glass cloth layer (201) fixedly connected to the outside of the metal hose (1), a polyester film layer (202) fixedly connected to the outside of the glass cloth layer (201), a natural rubber layer (203) fixedly connected to the outside of the polyester film layer (202), and a butyl rubber layer (204) fixedly connected to the outside of the natural rubber layer (203).

3. A composite fireproof cable according to claim 1, characterized in that: The number of the wire cores (4) is not less than one, the evenly distributed wire cores (4) are bonded to each other, and the anti-corrosion layer (303) is an epoxy resin layer.

4. A composite fireproof cable according to claim 1, characterized in that: The heat-insulating coating layer (302) is a polyurethane waterproof heat-insulating coating, and the high-temperature resistant coating layer (306) is a heterocyclic polymer coating.

5. A composite fireproof cable according to claim 2, characterized in that: The inner side of the heat insulation layer (301) is in contact with the outer side of the butyl rubber layer (204) and is fixedly connected by bonding.

6. A composite fireproof cable according to claim 2, characterized in that: The glass cloth layer (201), the polyester film layer (202), the natural rubber layer (203), the butyl rubber layer (204), the heat insulation layer (301), the anti-corrosion layer (303), the halogen-free low-smoke flame-retardant polyolefin layer (304), and the EPDM rubber layer (305) are all in the shape of circular tubes.

7. A composite fireproof cable according to claim 6, characterized in that: The glass cloth layer (201), the polyester film layer (202), the natural rubber layer (203), the butyl rubber layer (204), the heat insulation layer (301), the anti-corrosion layer (303), the halogen-free low-smoke flame-retardant polyolefin layer (304), and the EPDM rubber layer (305) have the same center.

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