Rat-proof and ant-proof photovoltaic cable

Abstract

The utility model discloses a rat-proof and termite-proof photovoltaic cable, and relates to the technical field of cables. Comprising a cable core and an FRP reinforcing core, the cable core is uniformly arranged around the FRP reinforcing core, a water-blocking tape wrapping is wrapped outside the cable core, a first glass fiber rope is filled between the water-blocking tape wrapping and the cable core, and a copper woven mesh is wrapped outside the water-blocking tape wrapping. The ratproof and termite-proof photovoltaic cable is provided with a three-layer protection structure, the steel tape armor at the outer layer has very high mechanical strength and tensile property, so that rats are difficult to bite and penetrate through the armor layer, the mechanical protection of the cable is enhanced, the second glass fiber rope tightly attached to the outer layer is made of glass fibers, and the glass fibers are extremely fine and crisp, so that the rats cannot be damaged in the biting process of the rats, and the damage to the rats is avoided. When the optical cable is used, the crushed glass fragments hurt the oral cavity of the mouse, so that the mouse fears the optical cable, the wrapping strength of the aramid fiber braid is 5-6 times of that of steel, the toughness of the aramid fiber braid is 2 times of that of the steel, the mouse and ant biting is difficult, and the mouse and ant prevention function of the cable is further improved.

Description

Technical Field

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

[0002] Photovoltaic cable is an important and indispensable part of the solar photovoltaic power generation system. Usually, the low-voltage direct current generated by photovoltaic power generation is converted into alternating current and then output. The cable connecting the photovoltaic module and the AC / DC inverter is the photovoltaic cable. Therefore, photovoltaic cable, as the backbone of power transmission of photovoltaic power generation facilities, is directly related to the safety, reliability and advancement of the solar photovoltaic power generation system. Most photovoltaic power stations are built outdoors, so the cable must have good flame retardant, oil-proof, anti-sunlight aging, acid and alkali proof, ozone-resistant, high temperature and severe cold-resistant, halogen-free and other properties.

[0003] At present, the photovoltaic cables on the market basically have the above functions, but some photovoltaic power stations are built in remote mountainous areas. The photovoltaic cables will be bitten by rats and termites during use. The bitten cables have quality risks of short circuit and open circuit, affecting the safety of the entire photovoltaic power generation system. Utility Model Content

[0004] The utility model provides a rat and ant-proof photovoltaic cable to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rat- and ant-proof photovoltaic cable, comprising a cable core and an FRP reinforcement core, the cable core being evenly arranged around the outside of the FRP reinforcement core, the outside of the cable core being wrapped with a water-blocking tape wrap, a first glass fiber rope being filled between the water-blocking tape wrap and the cable core, the outside of the water-blocking tape wrap being wrapped with a copper braided mesh, the outside of the copper braided mesh being wrapped with an aramid tape wrap, the outside of the aramid tape wrap being wrapped with a PE inner sheath, the outer wall of the PE inner sheath being provided with convex strips, and the outside of the convex strips being wrapped with steel belt armor, a second glass fiber rope being filled between the steel belt armor and the convex strips, and the outside of the steel belt armor being wrapped with an XLPE outer sheath.

[0006] Furthermore, the number of the cable cores is 3, and the cross-section of the cable core is elliptical.

[0007] Furthermore, the cable core is closely attached to the outer side of the FRP reinforcement core, and a petroleum jelly layer is filled between the cable core and the FRP reinforcement core.

[0008] Furthermore, the cable core includes a bare copper conductor and a PE insulation layer, and the PE insulation layer is wrapped around the outside of the bare copper conductor.

[0009] Furthermore, the outer surface of the XLPE outer sheath is provided with embedding grooves, and the embedding grooves are evenly distributed on the XLPE outer sheath.

[0010] Furthermore, a steel wire is embedded in the embedding groove, and the steel wire is flush with the outer surface of the XLPE outer sheath.

[0011] Compared with the prior art, the utility model provides a rat and ant-proof photovoltaic cable, which has the following beneficial effects:

[0012] The rat- and ant-proof photovoltaic cable is provided with a three-layer protection structure. The outer steel belt armor has strong mechanical strength and tensile resistance, making it difficult for rats to bite through the armor layer, thereby enhancing the mechanical protection of the cable. The second glass fiber rope close to the outer layer is composed of glass fiber. Since the glass fiber is extremely thin and brittle, during the process of rat gnawing, the crushed glass slag will hurt the rat's mouth, causing it to fear the optical cable. The strength of the aramid webbing wrapping is 5 to 6 times that of steel, and the toughness is twice that of steel, making it difficult for rats and ants to gnaw, thereby further improving the rat- and ant-proof function of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] Figure 3 This is a structural diagram of the cable core of the utility model.

[0016] In the figure: 1. Cable core; 2. FRP reinforcing core; 3. Water-blocking tape wrapping; 4. First glass fiber rope; 5. Copper braided mesh; 6. Aramid webbing wrapping; 7. PE inner sheath; 8. Raised strips; 9. Steel belt armor; 10. Second glass fiber rope; 11. XLPE outer sheath; 12. Petroleum jelly layer; 13. Bare copper conductor; 14. PE insulation layer; 15. Grooving; 16. Steel wire. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-Figure 3The utility model discloses a rat-ant-proof photovoltaic cable, comprising a cable core 1 and an FRP reinforcing core 2, wherein the cable core 1 is evenly arranged around the outside of the FRP reinforcing core 2, the outside of the cable core 1 is wrapped with a water-blocking tape wrap 3, a first glass fiber rope 4 is filled between the water-blocking tape wrap 3 and the cable core 1, the outside of the water-blocking tape wrap 3 is wrapped with a copper braided mesh 5, the outside of the copper braided mesh 5 is wrapped with an aramid webbing wrap 6, the outside of the aramid webbing wrap 6 is wrapped with a PE inner sheath 7, the outer wall of the PE inner sheath 7 is provided with a convex strip 8, and the outside of the convex strip 8 is wrapped with a steel belt armor 9, and the space between the steel belt armor 9 and the convex strip 8 is filled with The second glass fiber rope 10 is provided with a three-layer protection structure. The outer steel belt armor 9 has strong mechanical strength and tensile strength, making it difficult for rodents to bite through the armor layer, thereby enhancing the mechanical protection of the cable. The second glass fiber rope 10 close to the outer layer is composed of glass fiber. Since the glass fiber is extremely fine and brittle, during the process of rodent gnawing, the crushed glass slag will hurt the mouse's mouth, causing it to fear the optical cable. The strength of the aramid webbing wrap 6 is 5 to 6 times that of steel, and the toughness is twice that of steel. It is difficult for rodents and ants to gnaw, further improving the anti-rodent and ant function of the cable. The outside of the steel belt armor 9 is wrapped with an XLPE outer sheath 11.

[0019] Specifically, the number of the cable cores 1 is 3, and the cross section of the cable core 1 is elliptical.

[0020] In this embodiment, the three wires commonly used in the circuit are the live wire, the neutral wire and the ground wire. The use of three wires can prevent electric shock accidents caused by leakage during the use of electrical equipment.

[0021] Specifically, the cable core 1 is closely attached to the outer side of the FRP reinforcing core 2 , and a petroleum jelly layer 12 is filled between the cable core 1 and the FRP reinforcing core 2 .

[0022] In this embodiment, the petroleum jelly layer 12 can play a role in cooling the heat of the cable core 1 .

[0023] Specifically, the cable core 1 includes a bare copper conductor 13 and a PE insulation layer 14 , and the PE insulation layer 14 is wrapped around the outer side of the bare copper conductor 13 .

[0024] In this embodiment, the cable core 1 is the name of the conductive part inside the cable, which is wrapped in the insulation layer of the cable and consists of a plurality of twisted cables.

[0025] Specifically, the outer surface of the XLPE outer sheath 11 is provided with embedding grooves 15 , and the embedding grooves 15 are evenly distributed on the XLPE outer sheath 11 .

[0026] In this embodiment, the embedding groove 15 is an assembly structure for attaching a protective layer to the surface of the XLPE outer sheath 11 .

[0027] Specifically, a steel wire 16 is embedded in the embedding groove 15 , and the steel wire 16 is flush with the outer surface of the XLPE outer sheath 11 .

[0028] In this embodiment, the steel wire 16 can improve the strength and tensile strength of the cable, so that it can withstand greater tension and external pressure.

[0029] When in use, a three-layer protection structure is provided. The outer steel belt armor 9 has strong mechanical strength and tensile resistance, making it difficult for rodents to bite through the armor layer, thereby enhancing the mechanical protection of the cable. The second glass fiber rope 10 close to the outer layer is composed of glass fiber. Since the glass fiber is extremely fine and brittle, during the process of rodent gnawing, the crushed glass slag will injure the mouse's mouth, causing it to fear the optical cable. The strength of the aramid webbing wrap 6 is 5 to 6 times that of steel, and the toughness is twice that of steel. It is difficult for rodents and ants to gnaw, further improving the anti-rodent and ant function of the cable.

[0030] In summary, the rat-proof and ant-proof photovoltaic cable is provided with a three-layer protection structure. The outer steel belt armor 9 has strong mechanical strength and tensile strength, making it difficult for rats to bite through the armor layer, thereby enhancing the mechanical protection of the cable. The second glass fiber rope 10 close to the outer layer is composed of glass fiber. Since the glass fiber is extremely fine and brittle, during the process of rat gnawing, the crushed glass slag will hurt the rat's mouth, causing it to fear the optical cable. The strength of the aramid webbing wrap 6 is 5 to 6 times that of steel, and the toughness is twice that of steel. It is difficult for rats and ants to gnaw, further improving the rat-proof and ant-proof function of the cable.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rat-ant proof photovoltaic cable, comprising a cable core (1) and an FRP reinforcement core (2), characterized in that: The cable core (1) is evenly arranged around the outside of the FRP reinforcing core (2); the outside of the cable core (1) is wrapped with a water-blocking tape wrap (3); a first glass fiber rope (4) is filled between the water-blocking tape wrap (3) and the cable core (1); the outside of the water-blocking tape wrap (3) is wrapped with a copper braided mesh (5); the outside of the copper braided mesh (5) is wrapped with an aramid webbing wrap (6); the outside of the aramid webbing wrap (6) is wrapped with a PE inner sheath (7); the outer wall of the PE inner sheath (7) is provided with a convex strip (8); the outside of the convex strip (8) is wrapped with a steel belt armor (9); a second glass fiber rope (10) is filled between the steel belt armor (9) and the convex strip (8); and the outside of the steel belt armor (9) is wrapped with an XLPE outer sheath (11).

2. The rat-ant-proof photovoltaic cable according to claim 1, characterized in that: The number of the cable cores (1) is three, and the cross-section of the cable core (1) is elliptical.

3. The rat-ant-proof photovoltaic cable according to claim 1, characterized in that: The cable core (1) is closely attached to the outer side of the FRP reinforcing core (2), and a petroleum jelly layer (12) is filled between the cable core (1) and the FRP reinforcing core (2).

4. The rat- and ant-proof photovoltaic cable according to claim 1, characterized in that: The cable core (1) comprises a bare copper conductor (13) and a PE insulation layer (14), wherein the PE insulation layer (14) is wrapped around the outside of the bare copper conductor (13).

5. The rat- and ant-proof photovoltaic cable according to claim 1, characterized in that: The outer surface of the XLPE outer sheath (11) is provided with embedding grooves (15), and the embedding grooves (15) are evenly distributed on the XLPE outer sheath (11).

6. The rat- and ant-proof photovoltaic cable according to claim 5, characterized in that: A steel wire (16) is embedded in the embedding groove (15), and the steel wire (16) is flush with the outer surface of the XLPE outer sheath (11).

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