Photovoltaic lightning protection device

Abstract

The utility model discloses a photovoltaic lightning protection device which comprises a soil body, a concrete column and a lightning protection grounding rod, the concrete column is fixedly arranged in the soil body, the lower end of the lightning protection grounding rod penetrates through the concrete column and is arranged in the soil body, and a plurality of annular clamping grooves which are arranged at equal intervals are densely formed in the periphery of the lightning protection grounding rod; according to the photovoltaic lightning protection device, the friction force of the outer surface of the lightning protection grounding rod is increased through the annular clamping grooves, the lightning protection grounding rod can be conveniently pulled out manually, meanwhile, a labor-saving crowbar can be used, the lower end of the right-angle prying corner serves as a fulcrum, then the arc-shaped V-shaped clamping groove in the right-angle prying corner is embedded and clamped into the annular clamping grooves, and then the lever can serve as a power arm; and one side of the right-angle prying angle is used as a resisting arm, so that the lightning-protection grounding rod can be pulled out from the guide pipe and a soil body below in a more labor-saving manner, namely the lightning-protection grounding rod can be pulled out manually more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic lightning protection, in particular to a photovoltaic lightning protection device. Background Art

[0002] Photovoltaic lightning protection is used to protect solar power generation from lightning. Existing photovoltaic lightning protection mainly involves four aspects: grounding (all metal parts in the photovoltaic system, such as photovoltaic module frames and brackets, should be connected to the joint grounding body at the same potential), lightning rods (lightning rods can attract lightning and guide it to the ground, thereby reducing the direct impact of lightning on the photovoltaic system), lightning protection devices (lightning protection devices are gradually installed in the system loop) and structural optimization (improving the structure of the equipment to reduce the probability of being struck by lightning). It can effectively protect the photovoltaic system from damage caused by lightning. Ensure its safety and reliability; grounding is an important measure to prevent lightning strikes, which can release static electricity and charge and reduce the potential difference caused by air pressure changes. The installation process of general lightning protection grounding rods is: foundation preparation (casting a cement concrete column with a depth of 1.5m and a diameter of 0.6m) → drilling (drilling a hole with a diameter of 20mm on the upper surface of the concrete column, and drilling into the soil under the cement concrete column along the hole) → fixing the grounding rod (inserting the lower end of the fixed grounding rod into the drilled hole) → wiring (connecting the grounding wire and the upper end of the grounding rod together).

[0003] After a certain period of use and environmental influences, the material, structure and function of the grounding rod will change, leading to safety hazards. According to relevant regulations, generally speaking, the service life of the grounding rod is five years, and it needs to be inspected and replaced regularly; however, after five years of contact and adhesion between the lower end of the grounding rod and the underlying soil, the bond is relatively firm, and the surface of the main part of the grounding rod in the technology is smooth, so it is easy to slip when the grounding rod is manually pulled out; that is, it is difficult to manually pull out the grounding rod. Utility Model Content

[0004] The utility model aims to solve the problem of difficulty in manually pulling out the grounding rod in the prior art, and proposes a photovoltaic lightning protection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The photovoltaic lightning protection device comprises soil, concrete columns and lightning grounding rods. The concrete columns are fixedly arranged in the soil, the lower ends of the lightning grounding rods pass through the concrete columns and are arranged in the soil, and the periphery of the lightning grounding rods is densely provided with a plurality of equally spaced annular slots.

[0007] Preferably, a guide tube is pre-buried in the concrete column, and the lightning protection grounding rod passes through the guide tube.

[0008] Preferably, a boss is fixedly connected to the top end of the concrete column, and the boss is fixedly mounted on the periphery of the top end of the guide tube.

[0009] Preferably, an insulating waterproof box cover is provided above the boss, and side panels are fixedly mounted on both sides of the lower end of the insulating waterproof box cover.

[0010] Preferably, screw rods are respectively provided on both sides of the boss, and through holes are provided on the two side plates. The two screw rods pass through the two through holes respectively, and nuts are threadedly connected to the top ends of the screw rods.

[0011] Preferably, a wire threading port is provided on one side of the insulating waterproof box cover.

[0012] Compared with the prior art, the utility model provides a photovoltaic lightning protection device, which has the following beneficial effects:

[0013] 1. The photovoltaic lightning protection device increases the friction force of the outer surface of the lightning protection grounding rod through a plurality of annular grooves, which is convenient for manually pulling out the lightning protection grounding rod. At the same time, a labor-saving crowbar can be used. The lower end of the right-angle crowbar is used as a fulcrum, and the arc-shaped V-shaped groove in the right-angle crowbar is inserted into the annular groove. The lever can be used as a power arm and one side of the right-angle crowbar is used as a resistance arm, so that the lightning protection grounding rod can be pulled out from the guide tube and the soil below with more effort, that is, it is easier to manually pull out the lightning protection grounding rod.

[0014] 2. The photovoltaic lightning protection device uses a pre-buried guide tube. Firstly, compared with the installation process of the lightning protection grounding rod, the drilling of the concrete column is omitted. Secondly, the inner diameter of the guide tube is slightly larger than the outer diameter of the lightning protection grounding rod, which is convenient for the lightning protection grounding rod to be inserted into the inner hole of the guide tube or pulled out from the inner hole of the guide tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the photovoltaic lightning protection device proposed by the utility model;

[0016] Figure 2 This is a cross-sectional view of the photovoltaic lightning protection device proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the partial structure of the photovoltaic lightning protection device proposed by the utility model.

[0018] In the figure: 1. soil; 2. concrete column; 3. insulating waterproof box cover; 4. side panel; 5. perforation; 6. nut; 7. screw; 8. threading port; 9. boss; 10. guide tube; 11. lightning protection grounding rod; 12. drill bit; 13. lower connecting thread 1; 14. annular groove; 15. lever; 16. handle; 17. arc-shaped V-shaped groove; 18. upper connecting thread 2. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Reference Figure 1-3 , a photovoltaic lightning protection device, including a soil body 1, a concrete column 2 is pre-cast and arranged at the upper end of the soil body 1, that is, the concrete column 2 is fixedly installed in the soil body 1, the height of the concrete column 2 is 1.5m, and the diameter is 0.6m. Before the concrete column 2 in the present application is cast with concrete, a 1.8m high guide pipe 10 is inserted in advance into the pit excavated in the soil body 1;

[0022] The guide tube 10 itself has an inner hole, which eliminates the need for drilling holes in the concrete column 2 at a later stage, and the inner diameter of the hole of the guide tube 10 is 21 mm. A lightning protection grounding rod 11 is arranged in the guide tube 10, and the outer diameter of the lightning protection grounding rod 11 is 20 mm, that is, the inner diameter of the guide tube 10 is slightly larger than the outer diameter of the lightning protection grounding rod 11, which facilitates the lightning protection grounding rod 111 to be inserted into or pulled out of the inner hole of the guide tube 10.

[0023] In this embodiment, the lower end of the lightning protection grounding rod 11 is integrally fixedly connected with a drill bit 12, the lower end periphery of the lightning protection grounding rod 11 is also provided with a lower connecting thread 13, and the upper end periphery of the lightning protection grounding rod 11 is provided with an upper connecting thread 2 18, the lower connecting thread 13 and the upper connecting thread 2 18 can be threadedly connected with the connector for the grounding rod in the prior art, and the connector for the grounding rod is used to connect the two ends of the two lightning protection grounding rods 11;

[0024] The upper connecting thread 18 can also increase the friction on the upper end of the lightning protection grounding rod 11, and can more stably wrap the connecting grounding wire. The outer periphery of the lightning protection grounding rod 11 is densely provided with a plurality of equidistantly arranged annular grooves 14, and the plurality of annular grooves 14 are mainly used to increase the friction on the outer surface of the lightning protection grounding rod 11, so as to facilitate manual removal of the lightning protection grounding rod 11.

[0025] In this embodiment, the upper end of the concrete column 2 is fixedly connected with a boss 9, which is arranged at the periphery of the upper end of the guide tube 10, that is, the upper surface of the boss 9 is higher than the upper surface of the concrete column 2, and rainwater entering the boss 9 will automatically flow into the upper surface of the concrete column 2. Both sides of the upper surface of the concrete column 2 are fixedly connected with screws 7, and two screws 7 are respectively arranged on both sides of the boss 9. The two screws 7 are connected with an insulating waterproof box cover 3, and the lower ends of the insulating waterproof box cover 3 are respectively fixedly installed with side panels 4;

[0026] The side panels 4 are each provided with a through hole 5, and two screws 7 respectively pass through the through holes 5 upwards. The top end of the screw 7 is threadedly connected with a nut 6, and the lower end of the nut 6 is extruded and installed on the upper surface of the side panel 4, that is, the insulating waterproof box cover 3 can be fixed on the two screws 7 through the two nuts 6. The insulating waterproof box cover 3 is arranged above the boss 9. The insulating waterproof box cover 3 is used to shield the upper end of the lightning protection grounding rod 11 and the grounding wire. A wire threading port 8 is provided on one side of the insulating waterproof box cover 3, and the wire threading port 8 is used to pass the grounding wire connected to the upper end of the lightning protection grounding rod 11.

[0027] It should be noted that after the plurality of annular grooves 14 increase the friction force of the outer wall of the lightning protection grounding rod 11, it can also be used with an adapted labor-saving crowbar, which is composed of a lever 15, a handle 16 and a right-angle prying angle 19. The handle 16 is fixedly mounted on the head end of the lever 15, and the right-angle prying angle 19 is fixedly mounted on the end of the lever 15. An arc-shaped V-shaped groove 17 is provided on one side of the right-angle prying angle 19, and the arc-shaped V-shaped groove 17 in the right-angle prying angle 19 can be inserted into the annular groove 14;

[0028] like Figure 3 The lower end of the right-angle prying angle 19 of the labor-saving crowbar is the fulcrum, the lever 15 is the power arm, and one side of the right-angle prying angle 19 is the resistance arm. The power arm is much larger than the resistance arm. Then, from power×power arm=resistance×resistance arm, it can be known that using the labor-saving crowbar can lift the lightning protection grounding rod 11 more labor-savingly.

[0029] The utility model, firstly, through the pre-buried guide tube 10, firstly, compared with the installation process of the lightning protection grounding rod, the drilling of the later concrete column 2 is omitted; secondly, the inner diameter of the guide tube 10 is slightly larger than the outer diameter of the lightning protection grounding rod 11, which is convenient for the later lightning protection grounding rod 11 to be inserted into the inner hole of the guide tube 10 or pulled out of the inner hole of the guide tube 10;

[0030] Then, the friction force on the outer surface of the lightning protection grounding rod 11 is increased by a plurality of annular grooves 14, so that it is convenient to manually pull out the lightning protection grounding rod 11. At the same time, a labor-saving crowbar can also be used, with the lower end of the right-angle prying angle 19 as a fulcrum, and then the arc-shaped V-shaped groove 17 in the right-angle prying angle 19 is engaged and inserted into the annular groove 14. The lever 15 can be used as a power arm, and one side of the right-angle prying angle 19 can be used as a resistance arm, so that the lightning protection grounding rod 11 can be pulled out from the guide tube 10 and the soil 1 below more labor-savingly, that is, it is easier to manually pull out the lightning protection grounding rod 11.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A photovoltaic lightning protection device, comprising a soil body (1), a concrete column (2) and a lightning protection grounding rod (11), wherein the concrete column (2) is fixedly arranged in the soil body (1), and the lower end of the lightning protection grounding rod (11) passes through the concrete column (2) and is arranged in the soil body (1), characterized in that: The periphery of the lightning protection grounding rod (11) is densely provided with a plurality of equidistantly arranged annular slots (14).

2. The photovoltaic lightning protection device according to claim 1, characterized in that: A guide tube (10) is pre-buried in the concrete column (2), and the lightning protection grounding rod (11) passes through the guide tube (10).

3. The photovoltaic lightning protection device according to claim 1, characterized in that: The top end of the concrete column (2) is fixedly connected to a boss (9), and the boss (9) is fixedly mounted on the periphery of the top end of the guide tube (10).

4. The photovoltaic lightning protection device according to claim 3, characterized in that: An insulating waterproof box cover (3) is arranged above the boss (9), and side panels (4) are respectively fixedly mounted on both sides of the lower end of the insulating waterproof box cover (3).

5. The photovoltaic lightning protection device according to claim 4, characterized in that: Screw rods (7) are respectively arranged on both sides of the boss (9), and through holes (5) are respectively arranged on the two side plates (4). The two screw rods (7) pass through the two through holes (5) respectively, and the top ends of the screw rods (7) are threadedly connected with nuts (6).

6. The photovoltaic lightning protection device according to claim 4, characterized in that: A wire threading port (8) is provided on one side of the insulating waterproof box cover (3).

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