Rat-proof and ant-proof cable for photovoltaic system

Abstract

The utility model provides an anti-rat and anti-termite cable for a photovoltaic system, and aims to solve the problem that after being laid, a traditional cable is bitten by rats and termites in the environment, so that the structure is damaged, and hidden dangers are caused to an electric power system. The cable mainly comprises a plurality of stranded tin-plated soft copper conductors located in the center, an insulating layer is wrapped on the periphery of each tin-plated soft copper conductor, a composite layer is wrapped on the periphery of each insulating layer, a sheath is wrapped on the periphery of each composite layer, and material master batches used for repelling rats and ants are added in the sheath and the composite layers. After the cable is laid, the sheath and the composite layer are both provided with material master batches, chemical odor for repelling rats and ants can be dissipated, the dissipation period is longer, and the service life is longer; even if the chemical rat repelling effect is weakened and the sheath on the outer layer is gnawed and broken, the composite layer can still play a good role in physical protection.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a rat-ant proof cable for a photovoltaic system. Background Art

[0002] The traditional photovoltaic power generation system cable process structure usually uses tinned soft copper conductors twisted together, extruded irradiation cross-linked polyolefin insulation, and the sheath is made of irradiation cross-linked polyolefin material. The finished product is inspected after irradiation with an electron accelerator. Cables with this structure do not have the function of preventing rats, insects and ants from gnawing. When the environmental humidity is high or it rains, the damaged parts of the cable can easily lead to a decrease in insulation resistance, causing malfunctions in the power generation system, affecting power generation efficiency, and causing huge losses. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the present application provides a rat-proof and ant-proof cable for photovoltaic systems. Both the sheath and the composite layer have material masterbatch, and the chemical odor dissipation period is longer, that is, the service life is longer; even after the chemical rat repellent effect is weakened and the gnawing sheath is broken, the composite layer can still play a good role in physical protection.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A rat- and ant-proof cable for a photovoltaic system comprises a plurality of twisted tinned soft copper conductors located in the center, the outer periphery of the tinned soft copper conductors is wrapped with an insulating layer, the outer periphery of the insulating layer is wrapped with a composite layer, the outer periphery of the composite layer is wrapped with a sheath, and master batches of materials for repelling rats and ants are added to the sheath and the composite layer.

[0006] Furthermore, the composite layer is a composite belt of corrugated metal and plastic.

[0007] Furthermore, the composite layer is longitudinally wrapped around the surface of the insulating layer after being baked at a high temperature.

[0008] The beneficial effects of the utility model are as follows:

[0009] Compared with the prior art, the cable structure provided by the utility model adopts a material masterbatch that can emit a special smell in the direction of chemical rat and ant prevention, which is added to the insulation layer and sheath material of the cable in a certain proportion and extruded on the surface of the photovoltaic cable conductor. After the cable is laid, the special chemical smell can disperse rats, insects, termites and other environmental organisms that cause damage to the cable. It can not only ensure that the cable has good electrical properties, mechanical and physical properties and flame retardant properties, but also play a role in preventing rats and insects.

[0010] Compared with the existing technology, the utility model not only adopts chemical anti-rat and ant protection, but also optimizes the physical anti-rat and ant protection. The composite layer adopts a corrugated metal + plastic composite tape longitudinally wrapped on the surface of the cable insulation layer. After high-temperature baking during the processing, the metal layer will fit tightly, which can not only ensure that the cable is prevented from being gnawed by rats and insects, but also play a waterproof role. After the metal tape is corrugated, it can also ensure that the cable has good bending performance.

[0011] Compared with the prior art, the material masterbatch or coating of the traditional chemical rat-proof cable structure is only set on the outermost sheath. As time goes by, the chemical smell of the sheath will gradually dissipate and disappear. The characteristics of the utility model are: both the sheath and the composite layer have material masterbatch, and the dissipation period is longer, that is, the service life is longer; even after the chemical rat repellent effect is weakened and the gnawing sheath is broken, the composite layer can still play a good role in physical protection. Compared with a single physical rat-proof structure, such as a double steel cable structure, the cable of the utility model has a smaller outer diameter and the cost is 20-40% lower than that of a double steel cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional structure diagram of the cable of the present utility model.

[0013] Among them: 1. Tinned soft copper conductor; 2. Insulation layer; 3. Composite layer; 4. Sheath. DETAILED DESCRIPTION

[0014] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0015] The utility model provides a rat-ant proof cable for a photovoltaic system, aiming to solve the problem that after the traditional cables are laid, they are damaged in structure due to the gnawing of rats and ants in the environment, thus posing a hidden danger to the power system.

[0016] like Figure 1 As shown, the utility model includes a multi-strand twisted tinned soft copper conductor 1 located in the center, the tinned soft copper conductor 1 is wrapped with an insulating layer 2 on the periphery, the insulating layer 2 is wrapped with a composite layer 3 on the periphery, the composite layer 3 is wrapped with a sheath 4 on the periphery, and the sheath 4 and the composite layer 3 are both added with a master batch of materials for repelling rats and ants, so that the sheath 4 and the composite layer 3 can emit a special smell for repelling rats and ants. The addition of the master batch of materials is not limited here, such as the plague repellent commonly used in traditional chemical rat and ant repellent cable structures.

[0017] Through the above technical scheme, the cable structure after extrusion of the utility model includes tinned soft copper conductor 1, insulation layer 2, composite layer 3 and sheath 4 from inside to outside. After laying, after the cable is laid, mice and ants will automatically expel them after smelling the chemical odor emitted; while the material masterbatch or coating of the traditional chemical anti-rat and ant cable structure is only set on the outermost sheath 4, and as time goes by, the chemical odor of the sheath 4 will gradually dissipate and disappear. The characteristics of the utility model are: both the sheath 4 and the composite layer 3 have material masterbatch, and the dissipation period is longer, that is, the service life is longer; even after the chemical rat repellent effect is weakened and the sheath 4 is broken, the composite layer 3 can still play a good role in physical protection.

[0018] In some embodiments, the composite layer 3 is a corrugated metal and plastic composite tape, and the composite layer 3 is longitudinally wrapped around the surface of the insulating layer 2 after being baked at high temperature.

[0019] Through the above technical solution, the composite layer 3 of the utility model adopts a corrugated metal + plastic composite tape to wrap longitudinally on the surface of the cable insulation layer 2. After high-temperature baking during the processing, the metal layer will be tightly attached, which can not only ensure that the cable is protected from rats and insects, but also play a waterproof role. After the metal tape is corrugated, it can also ensure that the cable has good bending performance. The setting of the composite layer 3 is used to prevent rats and ants in the physical direction. Compared with the traditional double steel belt physical anti-rat and ant structure, the outer diameter of the cable after extrusion of the utility model is smaller, and the cost is 20-40% lower than that of the double steel cable.

[0020] The working principle of this utility model:

[0021] The utility model adopts a cable insulation and sheath material masterbatch that can emit a special smell, which is added to the cable insulation and sheath material in a certain proportion and extruded on the surface of the photovoltaic cable conductor. After the cable is laid, mice and insects will automatically leave after smelling this special chemical smell. It can not only ensure that the cable has good electrical properties, mechanical and physical properties and flame retardant properties, but also play a role in preventing mice and insects.

[0022] At the same time, compared with the traditional chemical rat-repellent cable structure, the sheath 4 and the composite layer 3 of the utility model both have material masterbatch, and the chemical odor dissipation period is longer, that is, the service life is longer; even after the chemical rat-repellent effect is weakened and the gnawing sheath 4 is broken, the composite layer 3 can still play a good role in physical protection.

[0023] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A rat and ant proof cable for photovoltaic system, characterized in that: The invention comprises a plurality of strands of tinned soft copper conductor (1) which are twisted at the center. The outer periphery of the tinned soft copper conductor (1) is covered with an insulating layer (2). The outer periphery of the insulating layer (2) is covered with a composite layer (3). The outer periphery of the composite layer (3) is covered with a sheath (4). The sheath (4) and the composite layer (3) are both added with master batches of materials for repelling rats and ants.

2. The rat-ant proof cable for photovoltaic system according to claim 1, characterized in that: The composite layer (3) is a composite belt of corrugated metal and plastic.

3. The rat-ant proof cable for photovoltaic system according to claim 2, characterized in that: The composite layer (3) is longitudinally wrapped around the surface of the insulating layer (2) after being baked at a high temperature.

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