Centralized photovoltaic multi-pin lightning protection structure

Abstract

The utility model relates to the field of centralized photovoltaic technology, and discloses a centralized photovoltaic multi-pin lightning protection structure, which comprises a mounting rack, a photovoltaic panel is mounted on the surface of the mounting rack, a lightning protection device is arranged on the surface of the mounting rack, the lightning protection device comprises a plurality of support arms, the plurality of support arms are connected with the mounting rack through bolts, and the support arms are connected with the mounting rack through bolts. The centralized photovoltaic multi-pin lightning protection structure comprises a plurality of supporting arms, the ends, away from the mounting rack, of the supporting arms are fixedly connected with a rectangular plate, the surface of the rectangular plate is slidably sleeved with a plurality of frames, and lightning rods are attached to the surfaces of the frames. A conductive path is formed between the plurality of lightning rods and the mounting rack, the lightning triggering range of the plurality of lightning rods can cover the mounting area of the photovoltaic panel, and the lightning rods can trigger lightning to be transmitted to the underground through the mounting rack when lightning shock occurs, so that the lightning protection effect on the centralized photovoltaic panel is improved.

Description

Technical Field

[0001] This utility model relates to the field of centralized photovoltaic technology, specifically a centralized photovoltaic multi-needle lightning protection structure. Background Technology

[0002] Centralized photovoltaic (PV) power generation is a large-scale PV power generation system that concentrates numerous PV modules in a large area. It uses the photoelectric effect of PV panels to convert sunlight into direct current (DC). This DC power is then converted into alternating current (AC) power by a centralized inverter, and then boosted and connected to the power grid to supply power to distant loads.

[0003] Lightning rods are common lightning arresters. In photovoltaic power plants, lightning rods of appropriate height are installed around the photovoltaic array and on the tops of buildings such as substations. Their protection range should be able to cover the entire array area. However, for large photovoltaic arrays, the protection range of a single lightning rod is difficult to cover the entire area. This is because as the area of ​​the photovoltaic array increases, its diagonal distance becomes longer. If the height of the lightning rod is to cover the entire array, it will need to be very high. In practice, this is not only costly, but excessively tall lightning rods will also have problems with structural stability. Therefore, we propose a centralized photovoltaic multi-needle lightning protection structure. Utility Model Content

[0004] The purpose of this invention is to provide a centralized photovoltaic multi-needle lightning protection structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centralized photovoltaic multi-needle lightning protection structure, including a mounting frame, on which photovoltaic panels are mounted, and on which a lightning protection device is provided, the lightning protection device including multiple support arms, each of which is connected to the mounting frame by bolts, and a rectangular plate fixedly connected to one end of each support arm away from the mounting frame, the surface of which multiple frames are slidably fitted, and lightning rods are attached to the surface of the frames, the lightning rods being bolted to the surface of the frames, and threaded rods threaded through the surface of the frames, the end of which is rotatably connected to a pressure plate near the rectangular plate.

[0006] The effect achieved by the above-mentioned components is as follows: by setting up lightning protection devices, it is easy to install multiple small lightning rods on the mounting frame of centralized photovoltaic panels. Multiple lightning rods and the mounting frame form a conductive path. The lightning attraction range of multiple lightning rods will cover the area where the photovoltaic panels are installed. When lightning strikes, the lightning rods will conduct the lightning through the mounting frame to the ground, thereby preventing the photovoltaic panels from being shocked and thus improving the lightning protection effect of centralized photovoltaic panels.

[0007] Preferably, the inner wall of the frame is fixedly connected to two cylinders, and the surface of the rectangular plate is provided with a plurality of circular holes, the size of which is adapted to the size of the cylinders.

[0008] The effect achieved by the above components is that the frame will drive the cylinder to insert into the round hole, and the round hole will reach the position of the positioning frame, thereby facilitating the positioning of the frame.

[0009] Preferably, the surface of the frame has two guide rods that slide through it, and both guide rods are fixedly connected to the surface of the pressure plate.

[0010] The effect achieved by the above components is that the pressure plate will drive the guide rod to slide within the frame during the movement, and the guide rod will limit the movement path of the pressure plate, thereby preventing the pressure plate from rotating during movement.

[0011] Preferably, the surface of the rectangular plate is provided with a grounding device, the grounding device includes two U-shaped plates, the inner wall of the U-shaped plates slides with the surface of the rectangular plate, a pin slides through the surface of the U-shaped plates, the size of the pin is adapted to the size of the circular hole, an extension arm is fixedly connected to the side of the U-shaped plate away from the mounting frame, and a conductive plate slides through the inner wall of the extension arm.

[0012] The effect achieved by the above components is that by setting up a grounding device, it is easy to install a path for contact with the ground on the surface of the rectangular plate, thereby enabling the lightning current to be quickly and safely dispersed and introduced into the ground, avoiding the hazards such as high potential backflash caused by concentrated lightning current.

[0013] Preferably, a spring is fitted onto the arcuate surface of the pin, and the two ends of the spring are fixedly connected to the pin and the U-shaped plate, respectively. The effect achieved by the above components is that the pin is inserted into the round hole by means of the spring's contraction force, and the spring improves the stability of the pin's insertion into the round hole, thereby preventing the pin from coming out of the round hole due to shaking.

[0014] Preferably, a protruding plate is fixedly connected to one end of the conductive plate near the ground, and the vertical cross-section of the protruding plate is conical.

[0015] The effect achieved by the above components is that the conductive plate will drive the convex plate to insert into the ground. Because the convex plate is conical, it is easy to insert one end of the conductive plate into the ground.

[0016] Preferably, the support arm, bolt, rectangular plate, frame, threaded rod, pressure plate, cylinder, round hole, guide rod, U-shaped plate, pin, extension arm, conductive plate, and protrusion plate are all made of stainless steel.

[0017] The effects achieved by the above components are as follows: Stainless steel has good corrosion resistance. In photovoltaic power stations, since the equipment is exposed to the outdoor environment for a long time, it may be corroded by rain, fog and other factors. Stainless steel lightning rods can resist the corrosion of these natural factors very well. Moreover, stainless steel has high strength and can withstand certain mechanical stress, such as wind and vibration.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. In this utility model, by setting up a lightning protection device, it is easy to install multiple small lightning rods on the mounting frame of the centralized photovoltaic panel. The multiple lightning rods and the mounting frame form a conductive path. The lightning attraction range of the multiple lightning rods will cover the area where the photovoltaic panel is installed. When lightning strikes, the lightning rods will conduct the lightning through the mounting frame to the ground, thereby preventing the photovoltaic panel from being shocked and thus improving the lightning protection effect of the centralized photovoltaic panel.

[0020] 2. In this utility model, by setting a grounding device, a path for contact with the ground is easily achieved on the surface of the rectangular plate, thereby enabling the lightning current to be quickly and safely dispersed and introduced into the ground, avoiding the hazards such as high-potential backflash caused by concentrated lightning current. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0023] Figure 3 This is a schematic diagram of the structure of the lightning protection device of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the lightning rod of this utility model;

[0025] Figure 5 This is a schematic diagram of the grounding device of this utility model;

[0026] Figure 6 This utility model Figure 5 Enlarged view of point A in the image.

[0027] In the diagram: 1. Mounting bracket; 2. Photovoltaic panel; 3. Lightning protection device; 301. Support arm; 302. Bolt; 303. Rectangular plate; 304. Frame; 305. Lightning rod; 306. Threaded rod; 307. Pressure plate; 308. Cylinder; 309. Circular hole; 310. Guide rod; 4. Grounding device; 41. U-shaped plate; 42. Pin; 43. Extension arm; 44. Conductive plate; 45. Spring; 46. Protruding plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-2 This utility model provides a technical solution: a centralized photovoltaic multi-needle lightning protection structure, including a mounting frame 1, on which a photovoltaic panel 2 is mounted. A lightning protection device 3 is provided on the surface of the mounting frame 1. By setting the lightning protection device 3, multiple small lightning rods 305 can be installed on the mounting frame 1 of the centralized photovoltaic panel 2. A conductive path is formed between the multiple lightning rods 305 and the mounting frame 1. The lightning attraction range of the multiple lightning rods 305 covers the area where the photovoltaic panel 2 is installed. When lightning strikes, the lightning rods 305 will conduct the lightning through the mounting frame 1 to the ground, thereby preventing the photovoltaic panel 2 from being struck by lightning and improving the lightning protection effect of the centralized photovoltaic panel 2. A grounding device 4 is provided on the surface of a rectangular plate 303. By setting the grounding device 4, a path for contact with the ground can be installed on the surface of the rectangular plate 303, thereby enabling the lightning current to be quickly and safely dispersed and introduced into the ground, avoiding the hazards such as high-potential backflash caused by concentrated lightning current.

[0030] The specific setup and function of its lightning protection device 3 and grounding device 4 will be explained below.

[0031] Reference Figure 3 and Figure 4As shown in this embodiment: the lightning protection device 3 includes multiple support arms 301, each of which is connected to the mounting frame 1 using bolts 302. A rectangular plate 303 is fixedly connected to the end of each support arm 301 away from the mounting frame 1. Multiple frames 304 are slidably fitted onto the surface of the rectangular plate 303. A lightning rod 305 is attached to the surface of each frame 304, and the lightning rod 305 is connected to the surface of the frame 304 using bolts 302. A threaded rod 306 is threaded through the surface of the frame 304, and a pressure plate 307 is rotatably connected to the end of the threaded rod 306 near the rectangular plate 303. Two cylinders 308 are fixedly connected to the inner wall of the frame 304. Multiple circular holes 309 are formed on the surface of the rectangular plate 303, the size of which matches the size of the cylinders 308. The frame 304 will cause the cylinders 308 to insert into the circular holes 309, positioning the frame 304 and thus facilitating the limiting of the frame 304's position. Two guide rods 310 slide through the surface of the frame 304. Both guide rods 310 are fixedly connected to the surface of the pressure plate 307. When the pressure plate 307 moves, it will drive the guide rods 310 to slide within the frame 304. The guide rods 310 limit the movement path of the pressure plate 307, thereby preventing the pressure plate 307 from rotating during movement.

[0032] Reference Figure 5 and Figure 6 As shown, specifically, the grounding device 4 includes two U-shaped plates 41. The inner wall of the U-shaped plate 41 slides against the surface of the rectangular plate 303. A pin 42 slides through the surface of the U-shaped plate 41, and the size of the pin 42 is adapted to the size of the circular hole 309. An extension arm 43 is fixedly connected to the side of the U-shaped plate 41 away from the mounting bracket 1, and a conductive plate 44 slides through the inner wall of the extension arm 43. A spring 45 is fitted onto the arc surface of the pin 42, and the two ends of the spring 45 are fixedly connected to the pin 42 and the U-shaped plate 41, respectively. The effect achieved by the above components is that the pin 42 will be inserted into the circular hole 309 with the help of the contraction force of the spring 45. The spring 45 improves the stability of the pin 42 inserted into the circular hole 309, thereby preventing the pin 42 from falling out of the circular hole 309 due to shaking. A protruding plate 46 is fixedly connected to one end of the conductive plate 44 near the ground. The vertical cross section of the protruding plate 46 is conical. The conductive plate 44 will drive the protruding plate 46 to insert into the ground. Because the protruding plate 46 is conical, it is easy to insert one end of the conductive plate 44 into the ground.

[0033] Working principle: When a lightning protection structure needs to be installed on one side of the centralized photovoltaic panel 2, firstly, multiple support arms 301 are fixed to the surface of the mounting frame 1 using bolts 302. At this time, the support arms 301 will drive the rectangular plate 303 to be installed on one side of the mounting frame 1. Then, multiple lightning rods 305 are fixed to the surfaces of multiple frames 304 using bolts 302. Then, the frames 304 are placed on the surface of the rectangular plate 303. The distance between the frames 304 is adjusted according to actual needs. When the spacing is maintained at a suitable length, the frames 304 are pressed. The frames 304 will drive the cylinder 308 to be inserted into the round hole 309. The round hole 309 reaches the position of the positioning cylinder 308, thereby positioning the frame 304 and restricting the position of the frame 304. Then, the threaded rod 306 is rotated. The rotation of the threaded rod 306 will be aided by the threaded rod. Moving within the frame 304, the threaded rod 306 moves, causing the pressure plate 307 to move closer to the rectangular plate 303. During this movement, the pressure plate 307 causes the guide rod 310 to slide within the frame 304, thus limiting the movement path of the pressure plate 307 and preventing it from rotating. Once the pressure plate 307 is in the correct position, it abuts against the surface of the rectangular plate 303, securing the frame 304 firmly to the surface of the rectangular plate 303. At this point, a conductive path is formed between the multiple lightning rods 305 and the mounting frame 1, and the lightning-attracting range of the multiple lightning rods 305 covers the area where the photovoltaic panel 2 is installed. When lightning strikes, the lightning rods 305 will conduct lightning through the mounting frame 1 to the ground, thus preventing the photovoltaic panel 2 from being struck by lightning.

[0034] When it is necessary to improve the grounding effect of the lightning rod 305, first pull the pin 42. The pin 42 will slide within the U-shaped plate 41, and the movement of the pin 42 will stretch the spring 45. After the pin 42 is pulled out to the appropriate length, place the U-shaped plate 41 onto the surface of the rectangular plate 303. The inner wall of the U-shaped plate 41 will fit tightly against the surface of the rectangular plate 303. Then release the pin 42. The pin 42 will be inserted into the round hole 309 by the contraction force of the spring 45. The pin 42 will limit the position of the U-shaped plate 41, and the spring 45 will improve the stability of the pin 42 inserted into the round hole 309, thereby preventing the pin 42 from coming out of the round hole 309 due to shaking. Then, the conductive plate 44 is struck, and the conductive plate 44 slides within the extension arm 43. As the conductive plate 44 moves, it drives the convex plate 46 to move closer to the ground. After the conductive plate 44 moves to the appropriate position, it drives the convex plate 46 to insert into the ground. Because the convex plate 46 is conical, it is easy to insert one end of the conductive plate 44 into the ground. After the conductive plate 44 is inserted into the ground, the rectangular plate 303 will form a path with the ground through the conductive plate 44. At this time, the conductive plate 44 will conduct a certain amount of lightning to the lightning rod 305 into the ground, thereby further enabling the lightning current to be quickly and safely dispersed into the ground, avoiding the hazards such as high potential backflash caused by concentrated lightning current.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centralized lightning protection structure for photovoltaic multi-needle, comprising a mounting frame (1), the surface of the mounting frame (1) is provided with a photovoltaic panel (2), and the surface of the mounting frame (1) is provided with a lightning protection device (3), characterized in that: The lightning protection device (3) includes a plurality of support arms (301), a plurality of support arms (301) are connected with the mounting rack (1) by bolts (302), a plurality of support arms (301) are fixedly connected with rectangular plates (303) away from one end of the mounting rack (1), the surface of the rectangular plate (303) is slidably sleeved with a plurality of frames (304), the surface of the frame (304) is attached with lightning rods (305), the lightning rod (305) is connected to the surface of the frame (304) by a bolt (302), and the surface of the frame (304) is threaded with a threaded rod (306), one end of the threaded rod (306) close to the rectangular plate (303) is rotatably connected with a pressing plate (307).

2. The centralized photovoltaic multi-needle lightning protection structure according to claim 1, characterized in that: The inner wall of the frame (304) is fixedly connected with two cylinders (308), and the surface of the rectangular plate (303) is provided with a plurality of circular holes (309), the size of the circular hole (309) is matched with the size of the cylinder (308).

3. The centralized photovoltaic multi-needle lightning protection structure according to claim 1, characterized in that: The surface of the frame (304) is slidably penetrated by two guide rods (310), and the two guide rods (310) are fixedly connected with the surface of the pressing plate (307).

4. The centralized photovoltaic multi-needle lightning protection structure according to claim 1, characterized in that: The surface of the rectangular plate (303) is provided with a grounding device (4), the grounding device (4) includes two U-shaped plates (41), the inner wall of the U-shaped plate (41) is slidably connected with the surface of the rectangular plate (303), the surface of the U-shaped plate (41) is slidably penetrated by a latch (42), the size of the latch (42) is matched with the size of the circular hole (309), and the side of the U-shaped plate (41) away from the mounting rack (1) is fixedly connected with an extension arm (43), the inner wall of the extension arm (43) is slidably penetrated by a conductive plate (44).

5. The centralized photovoltaic multi-needle lightning protection structure according to claim 4, characterized in that: The circular arc surface of the latch (42) is sleeved with a spring (45), and the two ends of the spring (45) are fixedly connected with the latch (42) and the U-shaped plate (41) respectively.

6. The centralized photovoltaic multi-needle lightning protection structure according to claim 4, characterized in that: One end of the conductive plate (44) close to the ground is fixedly connected with a convex plate (46), and the vertical section of the convex plate (46) is conical.

7. The centralized photovoltaic multi-needle lightning protection structure according to any one of claims 1-6, characterized in that: The support arm (301), the bolt (302), the rectangular plate (303), the frame (304), the threaded rod (306), the pressing plate (307), the cylinder (308), the circular hole (309), the guide rod (310), the U-shaped plate (41), the latch (42), the extension arm (43), the conductive plate (44), and the convex plate (46) are all made of 316 stainless steel.

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