Photovoltaic power station booster station grounding device

Abstract

The utility model discloses a photovoltaic power station booster station grounding device, which relates to the technical field of photovoltaic power station booster station grounding, and comprises a grounding rod, a protective barrel and a top cover, the protective barrel is fixedly connected with the ground through a ground insertion assembly, and the top cover covers the top end of the protective barrel. The top cover is detachably connected with the protective barrel through a clamping assembly; the top of the grounding rod is located in the protection barrel, and the bottom of the grounding rod penetrates through a bottom plate of the protection barrel in a sliding mode and is inserted into the ground; a protective cover is arranged at the bottom end of the top cover, a gap is formed between the inner wall of the protective cover and the outer wall of the protective barrel, a sealing assembly is fixed to the barrel wall, located in an inner cavity of the protective cover, of the protective barrel, and a grounding wire penetrates through the sealing assembly and is electrically connected with the top of the grounding rod. The photovoltaic power station booster station grounding device can overcome the defect that the joint of the grounding device and the grounding wire is exposed in the external environment and is easy to be corroded by rainwater.

Description

Technical Field

[0001] This utility model relates to the field of grounding technology for photovoltaic power station booster stations, and in particular to a grounding device for photovoltaic power station booster stations. Background Technology

[0002] The grid connection of new energy power generation is an important part of the implementation. Photovoltaic power plants absorb solar energy through polycrystalline silicon solar panels, collect electrical energy through photovoltaic modules to inverters, and then connect to the grid through the step-up output of the substation. The grounding device can be connected to the grounding wire to realize the grounding operation. However, since the connection between the grounding device and the grounding wire is exposed to the external environment, it is easily corroded by rainwater.

[0003] For example, the patent disclosed in CN220732714U discloses a grounding soil resistance reduction device for photovoltaic booster stations, which can perform multiple resistance reduction operations on the grounding soil of photovoltaic booster stations, reducing the amount of resistance reduction engineering and increasing the resistance reduction quality. However, the connecting frame and horizontal grounding are exposed to the environment and are easily corroded by rainwater, reducing their service life.

[0004] Therefore, it is necessary to develop a grounding device for photovoltaic power station booster stations that can protect against rainwater to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a grounding device for a photovoltaic power station booster station that can solve the problem that the connection between the grounding device and the grounding wire is exposed to the external environment and is easily corroded by rainwater.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model discloses a grounding device for a photovoltaic power station booster station, including a grounding rod, a protective barrel, and a top cover. The protective barrel is fixedly connected to the ground via a grounding plug assembly. The top cover covers the top of the protective barrel and is detachably connected to the protective barrel via a snap-fit ​​assembly. The top of the grounding rod is located inside the protective barrel, and the bottom of the grounding rod slides through the bottom plate of the protective barrel and inserts into the ground. A protective cover is provided at the bottom of the top cover, and there is a gap between the inner wall of the protective cover and the outer wall of the protective barrel. A sealing assembly is fixed on the barrel wall of the protective barrel located inside the protective cover cavity, and a grounding wire passes through the sealing assembly and is electrically connected to the top of the grounding rod.

[0008] Optionally, the snap-fit ​​assembly includes a plug-in barrel, a pin, an end plate, and a tension spring. A through hole is provided on the barrel wall of the protective barrel, and the plug-in barrel is fixedly connected to the through hole. A circular tube is integrally formed between the bottom surface of the top cover and the top surface of the protective cover. One end of the pin slides through the circular tube and is inserted into the inner cavity of the plug-in barrel. The other end of the pin is fixedly connected to the end plate. The tension spring is sleeved on the pin. One end of the tension spring is fixedly connected to the end plate, and the other end of the tension spring is fixedly connected to the outer wall of the circular tube.

[0009] Optionally, the ground insertion assembly includes an insertion rod, barbs, a fixing plate, and a limiting plate. The fixing plate is fixedly connected to the outer wall of the bottom end of the protective barrel. The limiting plate is disposed on the top surface of the fixing plate. The limiting plate and the fixing plate are detachably connected by bolts. The top of the insertion rod passes through the fixing plate and is fixedly connected to the limiting plate. The bottom of the insertion rod is inserted into the ground. Multiple barbs are evenly distributed around the periphery of the insertion rod. The first end of each barb is fixedly connected to the bottom of the insertion rod, and the second end of each barb is higher than the first end.

[0010] Optionally, the lower surface of the barb is arc-shaped, and the upper surface of the barb is flat.

[0011] Optionally, the sealing assembly includes a fixing tube and a rubber tube. The fixing tube penetrates the wall of the protective barrel and is fixedly connected to the protective barrel. The rubber tube is fixed inside the central hole of the fixing tube, and the grounding wire passes through the central hole of the rubber tube.

[0012] Optionally, a terminal block is fixed to the top periphery of the grounding rod, and the grounding wire is electrically connected to the terminal block via a grounding screw.

[0013] Optionally, the bottom end of the grounding rod is provided with a self-tapping thread, and the top end of the grounding rod is fixed with a square head.

[0014] Optionally, a water tank assembly is also included, comprising a sealed tank, an inlet pipe, a drain pipe, and a float switch. The sealed tank is lower than the bottom of the protective barrel. One end of the inlet pipe is connected to the bottom of the inner cavity of the protective barrel, and the other end of the inlet pipe is connected to the sealed tank. One end of the drain pipe is inserted into the bottom of the inner cavity of the sealed tank, and the other end of the drain pipe passes through the sealed tank and is connected to an externally installed water pump. The drain pipe is fixedly connected to the tank wall of the sealed tank. The float switch is disposed inside the sealed tank. The circuit of the float switch passes through the sealed tank and is electrically connected to an externally installed controller. The circuit of the float switch is fixedly connected to the tank wall of the sealed tank. The water pump is electrically connected to the controller.

[0015] Optionally, the top surface of the protective barrel is a conical surface, and the water inlet pipe is connected to the bottom end of the conical surface.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] This utility model discloses a grounding device for a photovoltaic power station booster station. The protective casing and top cover protect the connection between the grounding rod and the grounding wire, preventing rainwater from falling into the connection. The sealing component creates a seal between the grounding wire and the protective casing, preventing rainwater from splashing into the casing. In summary, this utility model effectively protects the connection between the grounding device and the grounding wire from corrosion by rainwater. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle.

[0022] Explanation of reference numerals in the attached diagram: 18, float switch; 17, water suction pipe; 16, water inlet pipe; 15, sealed enclosure; 14, rubber hose; 13, fixing pipe; 12, limit plate; 11, fixing plate; 10, barb; 9, insertion rod; 8, tension spring; 7, end plate; 6, pin; 5, plug-in barrel; 4, grounding wire; 301, protective cover; 3, top cover; 2, protective barrel; 103, square head; 102, self-tapping thread; 101, terminal block; 1, grounding rod. Detailed Implementation

[0023] The core of this utility model is to provide a grounding device for a photovoltaic power station booster station, which can solve the defect that the connection between the grounding device and the grounding wire is exposed to the external environment and is easily corroded by rainwater.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In some embodiments, the device includes a grounding rod 1, a protective bucket 2, and a top cover 3. The protective bucket 2 is fixedly connected to the ground via a grounding plug assembly. The top cover 3 covers the top of the protective bucket 2 and is detachably connected to the protective bucket 2 via a snap-fit ​​assembly. The top of the grounding rod 1 is located inside the protective bucket 2, and the bottom of the grounding rod 1 slides through the bottom plate of the protective bucket 2 and is inserted into the ground. The bottom of the top cover 3 is provided with a protective cover 301. There is a gap between the inner wall of the protective cover 301 and the outer wall of the protective bucket 2. A sealing assembly is fixed on the bucket wall of the protective bucket 2 located inside the protective cover 301. The grounding wire 4 passes through the sealing assembly and is electrically connected to the top of the grounding rod 1.

[0027] Specifically, the protective bucket 2 and the top cover 3 can protect the connection between the grounding rod 1 and the grounding wire 4, thereby preventing rainwater from falling into the connection; the sealing component can seal the grounding wire 4 and the protective bucket 2, preventing rainwater falling on the ground from splashing into the interior of the protective bucket 2.

[0028] The top surface of the top cover 3 is designed in a dome shape to prevent rainwater from accumulating.

[0029] In some embodiments, the snap-fit ​​assembly includes a snap-fit ​​barrel 5, a pin 6, an end plate 7, and a tension spring 8. A through hole is provided on the barrel wall of the protective barrel 2, and the snap-fit ​​barrel 5 is fixedly connected to the through hole. A round tube is integrally formed between the bottom surface of the top cover 3 and the top surface of the protective cover 301. One end of the pin 6 slides through the round tube and is inserted into the inner cavity of the snap-fit ​​barrel 5. The other end of the pin 6 is fixedly connected to the end plate 7. The tension spring 8 is sleeved on the pin 6. One end of the tension spring 8 is fixedly connected to the end plate 7, and the other end of the tension spring 8 is fixedly connected to the outer wall of the round tube.

[0030] Specifically, pulling the end plate 7 causes the pin 6 to slide, allowing the end of the pin 6 furthest from the end plate 7 to enter the round tube. When installing the top cover 3, pulling the end plate 7 causes the end of the pin 6 furthest from the end plate 7 to enter the round tube. Then, the top cover 3 is placed on the protective barrel 2. The end plate 7 is released, and the top cover 3 is rotated. When the pin 6 is aligned with the inner cavity of the insertion barrel 5, the tension spring 8 pulls the end plate 7, causing the end plate 7 to slide, thus inserting the pin 6 into the inner cavity of the insertion barrel 5. When removing the top cover 3, pulling the end plate 7 causes the end of the pin 6 furthest from the end plate 7 to enter the round tube, allowing the top cover 3 to be removed. The edge of the top cover 3 covers the end plate 7 and the pin 6, thus preventing rainwater from falling directly on them and providing a certain degree of protection.

[0031] The top cover 3, the round tube, and the protective cover 301 are integrally formed and can be made of insulating materials with anti-corrosion properties, such as fiberglass epoxy resin, ceramics, stone, tempered glass, rubber, plastic, fiber materials, etc. In addition, the protective barrel 2 can also be made of the above-mentioned insulating materials with anti-corrosion properties.

[0032] In some embodiments, the ground insertion assembly includes a insertion rod 9, barbs 10, a fixing plate 11, and a limiting plate 12. The fixing plate 11 is fixedly connected to the outer wall of the bottom end of the protective barrel 2. The limiting plate 12 is disposed on the top surface of the fixing plate 11. The limiting plate 12 and the fixing plate 11 are detachably connected by bolts. The top of the insertion rod 9 passes through the fixing plate 11 and is fixedly connected to the limiting plate 12. The bottom of the insertion rod 9 is inserted into the ground. Multiple barbs 10 are evenly distributed around the periphery of the insertion rod 9. The first end of the barb 10 is fixedly connected to the bottom of the insertion rod 9, and the second end of the barb 10 is higher than the first end.

[0033] Specifically, the ground-insertion assembly securely connects the protective barrel 2 to the ground; the barbs 10 increase the stability of the connection between the insertion rod 9 and the ground. The barbs 10 have a first end and a second end, the first end being used for secure connection with the insertion rod 9.

[0034] In some embodiments, the lower surface of the barb 10 is arc-shaped, and the upper surface of the barb 10 is flat. The arc-shaped lower surface facilitates the insertion of the barb 10 into the ground along with the insertion rod 9, while the flat upper surface can generate a counterforce against the ground, increasing the firmness of the connection between the barb 10 and the ground.

[0035] In some embodiments, the sealing assembly includes a fixing tube 13 and a rubber tube 14. The fixing tube 13 penetrates the wall of the protective barrel 2 and is fixedly connected to the protective barrel 2. The rubber tube 14 is fixed in the central hole of the fixing tube 13, and the grounding wire 4 passes through the central hole of the rubber tube 14.

[0036] Specifically, the installation of the rubber tube 14 achieves a seal between the grounding wire 4 and the protective barrel 2, preventing rainwater falling on the ground from splashing into the interior of the protective barrel 2.

[0037] In some embodiments, a terminal block 101 is fixed to the top periphery of the grounding rod 1, and the grounding wire 4 is electrically connected to the terminal block 101 through a grounding screw.

[0038] Specifically, this is a specific connection method between the grounding wire 4 and the grounding rod 1. Obviously, other methods in the prior art can also be used to electrically connect the grounding wire 4 and the grounding rod 1, such as welding.

[0039] In some embodiments, the bottom end of the grounding rod 1 is provided with a self-tapping thread 102, and the top end of the grounding rod 1 is fixed with a square head 103.

[0040] Specifically, the square head 103 is used to engage with a wrench. When the grounding rod 1 is turned by the wrench, the grounding rod 1 will be driven into the ground by the self-tapping thread 102. Obviously, the square head 103 can also be struck directly to drive the grounding rod 1 into the ground. When the striking method is used, the self-tapping thread 102 does not need to be provided.

[0041] In some embodiments, a water tank assembly is also included, comprising a sealed housing 15, an inlet pipe 16, a drain pipe 17, and a float switch 18. The sealed housing 15 is lower than the bottom of the protective barrel 2. One end of the inlet pipe 16 is connected to the bottom of the inner cavity of the protective barrel 2, and the other end of the inlet pipe 16 is connected to the sealed housing 15. One end of the drain pipe 17 is inserted into the bottom of the inner cavity of the sealed housing 15, and the other end of the drain pipe 17 passes through the sealed housing 15 and is connected to an externally installed water pump. The drain pipe 17 is fixedly connected to the wall of the sealed housing 15. The float switch 18 is disposed inside the sealed housing 15. The circuit of the float switch 18 passes through the sealed housing 15 and is electrically connected to an externally installed controller. The circuit of the float switch 18 is fixedly connected to the wall of the sealed housing 15. The water pump is electrically connected to the controller.

[0042] Specifically, moisture may enter the protective tank 2 through the point where the grounding rod 1 penetrates the protective tank 2. The water tank assembly is designed to allow moisture entering the protective tank 2 to enter the sealed chamber 15 through the inlet pipe 16. When the liquid level in the sealed chamber 15 reaches the set value of the float switch 18, the float switch 18 transmits a signal to the controller. The controller then controls the water pump to operate, and the water in the sealed chamber 15 is discharged after entering the pumping pipe 17.

[0043] In some embodiments, the top surface of the protective barrel 2 is a conical surface, and the water inlet pipe 16 is connected to the bottom end of the conical surface.

[0044] Specifically, such as Figure 2 As shown, the middle part of the conical surface is higher than the surrounding parts, which is not conducive to water entering the protective barrel 2; the conical surface is more conducive to the accumulation of water entering the protective barrel 2, thus facilitating its entry into the sealed box 15.

[0045] Principle or process: The protective bucket 2 and top cover 3 protect the connection between the grounding rod 1 and the grounding wire 4, preventing rainwater from falling into the connection. The rubber tube 14 seals the grounding wire 4 and the protective bucket 2, preventing rainwater from splashing into the protective bucket 2. When installing the top cover 3, pull the end plate 7 so that the end of the pin 6 away from the end plate 7 enters the round tube. Then, place the top cover 3 on the protective bucket 2, loosen the end plate 7, and rotate the top cover 3. When the pin 6 is aligned with the inner cavity of the plug-in bucket 5, the tension spring 8 pulls the end plate 7, causing the end plate 7 to slide and insert the pin 6 into the inner cavity of the plug-in bucket 5. When removing the top cover 3, pull the end plate 7 so that the end of the pin 6 away from the end plate 7 enters the round tube, allowing the top cover 3 to be removed. The edge of the top cover 3 covers the end plate 7 and the pin 6, preventing rainwater from falling directly on them and providing a certain degree of protection.

[0046] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably, and the embodiments can be combined with each other. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0047] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A grounding device for a photovoltaic power station step-up substation, comprising a grounding rod (1), characterized in that, It also includes a protective bucket (2) and a top cover (3). The protective bucket (2) is fixedly connected to the ground through a grounding plug assembly. The top cover (3) covers the top of the protective bucket (2) and is detachably connected to the protective bucket (2) through a snap-fit ​​assembly. The top of the grounding rod (1) is located inside the protective bucket (2), and the bottom of the grounding rod (1) slides through the bottom plate of the protective bucket (2) and is inserted into the ground. The bottom of the top cover (3) is provided with a protective cover (301). There is a gap between the inner wall of the protective cover (301) and the outer wall of the protective bucket (2). A sealing assembly is fixed on the bucket wall of the protective bucket (2) located in the inner cavity of the protective cover (301). The grounding wire (4) passes through the sealing assembly and is electrically connected to the top of the grounding rod (1).

2. The grounding device for a photovoltaic power station step-up substation according to claim 1, characterized in that: The snap-fit ​​assembly includes a plug-in barrel (5), a pin (6), an end plate (7), and a tension spring (8). The protective barrel (2) has a through hole on its barrel wall, and the plug-in barrel (5) is fixedly connected to the through hole. A round tube is integrally formed between the bottom surface of the top cover (3) and the top surface of the protective cover (301). One end of the pin (6) slides through the round tube and is inserted into the inner cavity of the plug-in barrel (5). The other end of the pin (6) is fixedly connected to the end plate (7). The tension spring (8) is sleeved on the pin (6). One end of the tension spring (8) is fixedly connected to the end plate (7), and the other end of the tension spring (8) is fixedly connected to the outer wall of the round tube.

3. The grounding device for a photovoltaic power station step-up substation according to claim 1, characterized in that: The ground insertion assembly includes a rod (9), barbs (10), a fixing plate (11), and a limiting plate (12). The fixing plate (11) is fixedly connected to the outer wall of the bottom end of the protective barrel (2). The limiting plate (12) is disposed on the top surface of the fixing plate (11). The limiting plate (12) and the fixing plate (11) are detachably connected by bolts. The top of the rod (9) passes through the fixing plate (11) and is fixedly connected to the limiting plate (12). The bottom of the rod (9) is inserted into the ground. Multiple barbs (10) are evenly distributed around the circumference of the rod (9). The first end of the barb (10) is fixedly connected to the bottom of the rod (9), and the second end of the barb (10) is higher than the first end.

4. The grounding device for a photovoltaic power station step-up substation according to claim 3, characterized in that: The lower surface of the barb (10) is arc-shaped, and the upper surface of the barb (10) is flat.

5. The grounding device for a photovoltaic power station step-up substation according to claim 1, characterized in that: The sealing assembly includes a fixing tube (13) and a rubber tube (14). The fixing tube (13) penetrates the wall of the protective barrel (2) and is fixedly connected to the protective barrel (2). The rubber tube (14) is fixed in the central hole of the fixing tube (13), and the grounding wire (4) passes through the central hole of the rubber tube (14).

6. The grounding device for a photovoltaic power station step-up substation according to claim 1, characterized in that: A terminal block (101) is fixed to the top periphery of the grounding rod (1), and the grounding wire (4) is electrically connected to the terminal block (101) through a grounding screw.

7. The grounding device for a photovoltaic power station step-up substation according to claim 1, characterized in that: The bottom end of the grounding rod (1) is provided with a self-tapping thread (102), and the top end of the grounding rod (1) is fixed with a square head (103).

8. The grounding device for a photovoltaic power station step-up substation according to claim 1, characterized in that: It also includes a water tank assembly, which includes a sealed tank (15), an inlet pipe (16), a drain pipe (17), and a float switch (18). The sealed tank (15) is lower than the bottom of the protective barrel (2). One end of the inlet pipe (16) is connected to the bottom of the inner cavity of the protective barrel (2), and the other end of the inlet pipe (16) is connected to the sealed tank (15). One end of the drain pipe (17) is inserted into the bottom of the inner cavity of the sealed tank (15), and the other end of the drain pipe (17) is connected to the bottom of the inner cavity of the sealed tank (15). The water pipe (17) passes through the sealed box (15) and is connected to an externally installed water pump. The water pump is fixedly connected to the wall of the sealed box (15). The float switch (18) is installed inside the sealed box (15). The circuit of the float switch (18) passes through the sealed box (15) and is electrically connected to an externally installed controller. The circuit of the float switch (18) is fixedly connected to the wall of the sealed box (15). The water pump is electrically connected to the controller.

9. The grounding device for a photovoltaic power station step-up substation according to claim 8, characterized in that: The top surface of the protective barrel (2) is a conical surface, and the water inlet pipe (16) is connected to the bottom end of the conical surface.

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