Anti-exposure cable

Abstract

The utility model belongs to the technical field of cable production and application, and particularly relates to an anti-exposure cable. Comprising a sheath layer and a plurality of conductive wire cores sleeved in the sheath layer, and further comprises a middle rubber rope, the conductive wire cores are arranged around the middle rubber rope, the conductive wire cores are wrapped by a filling layer, the plurality of conductive wire cores are wrapped by the filling layer, the filling layer is wrapped by a protective layer, the protective layer is sleeved with the sheath layer, and the middle rubber rope is arranged around the sheath layer. The exterior of the sheath layer is coated with a nanometer titanium dioxide coating, and the exterior of the nanometer titanium dioxide coating is wrapped with a transparent nylon layer. The transparent nylon layer is used for protecting the nanometer titanium dioxide coating, part of ultraviolet rays can penetrate through the transparent nylon layer to be absorbed by the nanometer titanium dioxide coating, meanwhile, the transparent nylon layer has certain abrasion resistance and ageing resistance, and the service life of the transparent nylon layer is further prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable production and application, and particularly relates to an anti-exposure cable. Background Art

[0002] Cable: usually composed of several or several groups of wires. Usually a rope-like cable made of several or several groups of wires (at least two in each group), each group of wires is insulated from each other and often twisted around a center, with a highly insulating covering layer on the outside. The cable has the characteristics of being powered inside and insulated outside.

[0003] Cables are components used to transmit electricity in power systems. When cables are used outdoors, the ultraviolet rays in the sun will damage the cable's skin, causing the cable to oxidize and reduce its strength, making it easy for the cable to break and affecting its normal use, greatly shortening its service life and reducing its reliability.

[0004] The existing treatment method for this type of problem is mainly to coat a layer of nano-titanium dioxide on the outside of the sheath layer, and use the characteristics of nano-titanium dioxide to absorb and reflect ultraviolet rays, thereby increasing the service life of the sheath layer. Although the above solution can improve the cable's anti-exposure effect compared to the traditional solution, the titanium dioxide coating is easy to fall off over time, and thus can no longer protect the sheath layer. Utility Model Content

[0005] The utility model aims at the technical problems existing in outdoor use of cables and proposes an anti-exposure cable which has reasonable design, simple structure, convenient processing and can effectively improve the anti-exposure effect.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: the utility model provides an anti-exposure cable, including a sheath layer and a plurality of conductive cores sleeved in the sheath layer, and also including an intermediate rubber rope, the conductive core is arranged around the intermediate rubber rope, the conductive core is wrapped with a filling layer, the filling layer wraps the plurality of conductive cores inside, the filling layer is wrapped with a protective layer, the sheath layer is sleeved outside the protective layer, the sheath layer is coated with a nano titanium dioxide coating, the nano titanium dioxide coating is wrapped with a transparent nylon layer, wherein the filling layer is made of mica powder, and the protective layer is made of silicone rubber.

[0007] Preferably, the material of the sheath layer is cross-linked polyethylene.

[0008] Preferably, the middle rubber rope includes a polyester rope arranged in the middle and a thermoplastic elastomer wrapped outside the polyester rope.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. The utility model provides an anti-exposure cable, which uses a transparent nylon layer to protect the nano titanium dioxide coating and allows part of the ultraviolet rays to pass through the transparent nylon layer and be absorbed by the nano titanium dioxide coating. At the same time, the transparent nylon layer itself has certain wear resistance and aging resistance, thereby further improving its service life. At the same time, combined with the heat insulation of silicone rubber, the degree of heat exposure of the sheath layer is further reduced, thereby avoiding the breakage of macromolecules, ensuring the safety of the sheath layer, and improving the service life of the entire cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0012] Figure 1 A schematic diagram of the structure of the anti-exposure cable provided in Example 1;

[0013] In the above figures, 1, sheath layer; 11, polyester mesh; 2, conductive core; 3, middle rubber rope; 31, polyester rope; 32, thermoplastic elastomer; 4, filling layer; 5, protective layer; 6, nano titanium dioxide coating; 7, transparent nylon layer. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0016] Embodiment 1, as Figure 1 As shown, this embodiment aims to provide a cable suitable for outdoor use, so as to improve the cable's ability to resist exposure to sunlight, thereby achieving the problem of increasing service life. To this end, the anti-exposure cable provided in this embodiment includes a sheath layer 1 and a plurality of conductive cores 2 sheathed in the sheath layer 1, and an insulating layer is sheathed outside each conductive core 2 to further improve the purpose of insulation. The above structure is an existing common structure, so in this embodiment, it is not described in detail.

[0017] Considering that it is inevitable to pull the cable when using it outdoors, in order to improve the tensile strength of the entire cable, in this embodiment, an intermediate rubber rope 3 is also provided, and the conductive core 2 is arranged around the intermediate rubber rope 3, and the intermediate rubber rope 3 includes a polyester rope 31 arranged in the middle and a thermoplastic elastomer 32 wrapped outside the polyester rope 31. Polyester has the characteristics of strong toughness, high elasticity and heat resistance, and it can play a good role in tensile strength, and the thermoplastic elastomer facilitates the extrusion of the entire cable when it is bent, thereby improving the bending performance of the entire cable.

[0018] In order to achieve the purpose of flame retardancy, a filling layer 4 is wrapped around the conductive core 2, and the filling layer 4 wraps several conductive cores 2. In this embodiment, the filling layer 4 is made of mica powder, which has excellent properties of flame retardancy, insulation, UV resistance and infrared resistance. It can achieve better flame retardancy and at the same time, it can also better protect the insulating layer.

[0019] Although mica powder has the characteristics of flame retardancy, its thermal conductivity is high, and temperature is also the reason for the breakage of macromolecules. Therefore, a protective layer 5 is wrapped outside the filling layer 4. The protective layer 5 has the purpose of restraining the mica powder and also has the purpose of heat insulation. Therefore, the material of the protective layer 5 is silicone rubber. In addition to low thermal conductivity, silicone rubber has high temperature stability and can be effectively used with mica powder. At the same time, it also has excellent insulation performance, which is another layer of protection for the safety of cable use.

[0020] The sheath layer 1 is sleeved outside the protective layer 5, so that the aging problem caused by the temperature from the inside to the outside is solved. In order to solve the problem of exposure to the sun, a nano titanium dioxide coating 6 is coated outside the sheath layer 1. The nano titanium dioxide itself has the purpose of reflecting and absorbing ultraviolet rays. For this reason, it is coated outside the sheath layer 1, which is conducive to protecting the sheath layer 1. In order to avoid the shedding of the nano titanium dioxide coating 6, a transparent nylon layer 7 is wrapped outside the nano titanium dioxide coating 6. The material of the transparent nylon layer 7 is transparent nylon, which has good tensile strength, impact resistance, rigidity, wear resistance, chemical resistance, surface hardness and other properties. It fully meets the needs of the outermost layer of the cable. At the same time, it has a high light transmittance, which is similar to that of optical glass. In this way, ultraviolet rays can pass through the transparent nylon and are absorbed by the nano titanium dioxide coating 6. The transparent nylon itself also has certain anti-aging properties. For this reason, its setting can further extend the service life of the nano titanium dioxide coating 6.

[0021] Similarly, in order to increase the service life of the entire cable, the material of the sheath layer 1 is cross-linked polyethylene. The pressure resistance, corrosion resistance and heat resistance of cross-linked polyethylene are all combined with other layers to form a long-life sheath of the cable, thereby increasing the service life of the entire cable outdoors. In this embodiment, in order to further increase the tensile strength of the entire cable, a polyester mesh is provided in the sheath layer 1. The polyester mesh 11 is made of polyester ropes crisscrossed and woven, which can further improve the tensile resistance effect.

[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An anti-exposure cable, comprising a sheath layer and a plurality of conductive cores sheathed in the sheath layer, characterized in that: It also includes an intermediate rubber rope, the conductive core is arranged around the intermediate rubber rope, the conductive core is wrapped with a filling layer, the filling layer wraps several conductive cores inside, the filling layer is wrapped with a protective layer, the sheath layer is sleeved outside the protective layer, the sheath layer is coated with a nano titanium dioxide coating, and the nano titanium dioxide coating is wrapped with a transparent nylon layer, wherein the filling layer is made of mica powder, and the protective layer is made of silicone rubber.

2. The anti-exposure cable according to claim 1, characterized in that: The material of the sheath layer is cross-linked polyethylene.

3. The anti-exposure cable according to claim 2, characterized in that: The middle rubber rope comprises a polyester rope arranged in the middle and a thermoplastic elastomer wrapped outside the polyester rope.

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