Wind power plant booster station grounding device

Abstract

The utility model belongs to the technical field of wind power plant lightning protection equipment, in particular to a wind power plant booster station grounding device, which is characterized in that a grounding plate is arranged at the bottom of a screw rod, the inside of the screw rod is hollowed out, and a grounding main fixing rod which is positioned inside the screw rod and penetrates through the grounding plate is arranged on a second mounting plate; a first conducting strip is arranged on the first mounting plate, and a second conducting strip which corresponds to the first conducting strip and is connected with the grounding main fixing rod is arranged on the second mounting plate; the screw rod is in threaded connection with a sleeve, the bottom of the sleeve is provided with a first connecting plate, the first connecting plate is rotatably connected with a second connecting plate, the second connecting plate is provided with a through hole coaxial with the screw rod, the bottom of the second connecting plate is provided with grounding auxiliary fixing rods at intervals along the circumferential direction, and the grounding plate is provided with auxiliary holes corresponding to the grounding auxiliary fixing rods; drill bits are arranged at the bottoms of the grounding main fixing rod and the grounding auxiliary fixing rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of lightning protection equipment for wind farms, in particular to a grounding device for a booster station in a wind farm. Background Art

[0002] In the lightning protection and grounding project of a wind farm, a grounding device for discharging lightning current is usually installed. Since the underground of the wind farm site is mostly rock and the soil resistance is high, it is generally necessary to connect the grounding devices of multiple wind turbines to improve the effect of discharging current and meet the grounding requirements. With the increase of the single-unit capacity of wind turbines and the increase of the height of the fuselage, the distance between wind turbines in the wind farm is getting larger and larger, which makes the cost of interconnecting the grounding devices of each wind turbine into a network higher and higher. The generator in the cabin must be connected to the grounding device of the wind turbine using a special grounding cable, and other components in the cabin are directly connected to the cabin base. In order to ensure the normal and safe operation of the wind turbine and the personal safety of the staff, the grounding resistance of the wind turbine is generally less than 4 ohms. The grounding resistance of the grounding device directly affects the lightning protection level of the wind turbine. The acceptance of the grounding device is still based on whether the power frequency grounding resistance is qualified as the only standard. However, under the action of high-frequency and large-value lightning currents, spark effects and inductance effects will be generated in the process of discharging current in the ground network. At this time, the power frequency characteristics cannot truly reflect the lightning protection effect of the grounding device, and the impact characteristics of the grounding electrode need to be considered;

[0003] A Chinese patent (publication number: CN218770111U) discloses a new type of grounding device for a wind farm booster station, which solves the technical problems that the current grounding device is not convenient for installation by plugging into the ground, not convenient for subsequent fixing, and the existing grounding device has poor conductivity and is very unsafe when used. However, the following technical problems still exist:

[0004] In the disclosed patent, two sets of grounding spiral shafts are provided on the fixed plate during grounding. When grounding, the two sets of grounding spiral shafts need to be rotated synchronously to complete the grounding of the lightning rod. However, manual rotation is difficult to ensure the synchronous rotation of the grounding spiral shafts, which makes the installation laborious and time-consuming, and leveling work is required after installation, which reduces the installation efficiency.

[0005] Therefore, the utility model designs a grounding device for a wind farm booster station to solve the technical problems existing in the prior art. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a grounding device for a wind farm booster station, which solves the above-mentioned technical problems.

[0007] The solution adopted by the utility model is: a grounding device for a wind farm booster station, including a lightning rod and a screw, characterized in that:

[0008] The bottom of the lightning rod is provided with a first mounting plate, the screw is provided with a second mounting plate matched with the first mounting plate, the first mounting plate and the second mounting plate are connected by screws, the bottom of the screw is provided with a grounding plate, and the inside of the screw is hollowed out, and the second mounting plate is provided with a grounding main fixing rod located inside the screw and penetrating the grounding plate;

[0009] The first mounting plate is provided with a first conductive sheet, and the second mounting plate is provided with a second conductive sheet corresponding to the first conductive sheet and connected to the grounding main fixing rod;

[0010] The screw is threadedly connected with a sleeve, the bottom of the sleeve is provided with a first connecting plate, the first connecting plate is rotatably connected with a second connecting plate, the second connecting plate is provided with a through hole coaxial with the screw, and the bottom of the second connecting plate is provided with grounding auxiliary fixing rods at intervals along the circumferential direction, and the grounding plate is provided with auxiliary holes corresponding to the grounding auxiliary fixing rods;

[0011] The bottoms of the main grounding fixing rod and the auxiliary grounding fixing rod are both provided with drill bits.

[0012] Preferably, a dovetail sliding block is provided on the first connecting plate, and a dovetail sliding groove corresponding to the dovetail sliding block is provided on the second connecting plate.

[0013] Preferably, an anti-slip sleeve is provided on the outer side wall of the sleeve.

[0014] Preferably, a plurality of fixed balls are provided at intervals on the lightning rod.

[0015] Preferably, a plurality of auxiliary grounding fixing rods are provided at intervals along the circumferential direction at the bottom of the second connecting plate, and the auxiliary grounding fixing rods are evenly distributed on the second connecting plate.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is one of the three-dimensional view angles of the present utility model.

[0018] Figure 2 It is one of the perspectives of the stereoscopic cross-sectional view of the present utility model.

[0019] Figure 3 yes Figure 2 A partial enlarged view of .

[0020] Figure numerals: 1. Lightning rod; 2. Screw; 3. First mounting plate; 4. Second mounting plate; 5. Screw; 6. Grounding plate; 7. Main grounding fixing rod; 8. First conductive sheet; 9. Second conductive sheet; 10. Sleeve; 11. First connecting plate; 12. Second connecting plate; 13. Through hole; 14. Auxiliary grounding fixing rod; 15. Auxiliary hole; 16. Drill bit; 17. Dovetail sliding block; 18. Dovetail sliding groove; 19. Fixed ball. DETAILED DESCRIPTION

[0021] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figure 1-3 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0022] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0023] Embodiment 1, a grounding device for a wind farm booster station, comprising a lightning rod 1 and a screw rod 2, characterized in that:

[0024] The bottom of the lightning rod 1 is provided with a first mounting plate 3, the screw 2 is provided with a second mounting plate 4 matched with the first mounting plate 3, the first mounting plate 3 and the second mounting plate 4 are connected via screws 5, the bottom of the screw 2 is provided with a grounding plate 6, and the inside of the screw 2 is hollowed out, and the second mounting plate 4 is provided with a grounding main fixing rod 7 located inside the screw 2 and penetrating the grounding plate 6;

[0025] The first mounting plate 3 is provided with a first conductive sheet 8, and the second mounting plate 4 is provided with a second conductive sheet 9 corresponding to the first conductive sheet 8 and connected to the grounding main fixing rod 7;

[0026] The screw rod 2 is threadedly connected with a sleeve 10, a first connecting plate 11 is provided at the bottom of the sleeve 10, a second connecting plate 12 is rotatably connected to the first connecting plate 11, a through hole 13 coaxial with the screw rod 2 is provided on the second connecting plate 12, and grounding auxiliary fixing rods 14 are provided at intervals along the circumferential direction at the bottom of the second connecting plate 12, and auxiliary holes 15 corresponding to the grounding auxiliary fixing rods 14 are provided on the grounding plate 6;

[0027] The bottom of the main grounding fixing rod 7 and the auxiliary grounding fixing rod 14 are both provided with a drill bit 16;

[0028] The first connecting plate 11 is provided with a dovetail sliding block 17, and the second connecting plate 12 is provided with a dovetail sliding groove 18 corresponding to the dovetail sliding block 17;

[0029] The outer side wall of the sleeve 10 is provided with an anti-slip sleeve 10;

[0030] The lightning rod 1 is provided with a plurality of fixed balls 19 at intervals;

[0031] A plurality of grounding auxiliary fixing rods 14 are provided at intervals along the circumferential direction at the bottom of the second connecting plate 12 , and the grounding auxiliary fixing rods 14 are evenly distributed on the second connecting plate 12 .

[0032] When in use, the lightning rod 1 is matched with the screw rod 2, and the first mounting plate 3 is matched with the second mounting plate 4, and the lightning rod 1 is connected and installed by the screw 5, so that the first conductive sheet 8 is matched with the second conductive sheet 9, and the lightning rod 1 is connected with the grounding main fixing rod 7;

[0033] The grounding main fixing rod 7 provided at the bottom of the screw rod 2 is first inserted into the ground for preliminary fixing and ensuring that the lightning rod 1 is grounded to the ground. Subsequently, the sleeve 10 is rotated, and the sleeve 10 is lowered along the screw rod 2, and the first connecting plate 11 and the second connecting plate 12 are driven to lower, so that the grounding auxiliary fixing rod 14 is moved along the auxiliary hole 15, and the sleeve 10 is continuously rotated until the grounding auxiliary fixing rod 14 is completely inserted into the ground. Three groups of grounding auxiliary fixing rods 14 are provided, which are evenly distributed at the bottom of the second connecting plate 12, further improving the stability of the installation of the lightning rod 1.

[0034] When replacing the lightning rod 1, it is only necessary to remove the screw 5 to achieve the purpose of replacing the lightning rod 1;

[0035] The fixed ball 19 and the insulating layer provided on the outer side of the sleeve 10 are both made of polyethylene;

[0036] The lightning rod 1 is used in conjunction with the fixed ball 19 to perform lightning protection and electrical conduction, thereby improving safety in use.

[0037] The above description is only for illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various variations that conform to the concept of the present invention are within the protection scope of the present invention.

Claims

1. A grounding device for a wind farm booster station, comprising a lightning rod (1) and a screw rod (2), characterized in that: The lightning rod (1) is provided with a first mounting plate (3) at the bottom, the screw (2) is provided with a second mounting plate (4) matched with the first mounting plate (3), the first mounting plate (3) and the second mounting plate (4) are connected via screws (5), a grounding plate (6) is provided at the bottom of the screw (2), and the inside of the screw (2) is hollowed out, and the second mounting plate (4) is provided with a grounding main fixing rod (7) located inside the screw (2) and penetrating the grounding plate (6); The first mounting plate (3) is provided with a first conductive sheet (8), and the second mounting plate (4) is provided with a second conductive sheet (9) corresponding to the first conductive sheet (8) and connected to the grounding main fixing rod (7); The screw rod (2) is threadedly connected with a sleeve (10), a first connecting plate (11) is provided at the bottom of the sleeve (10), a second connecting plate (12) is rotatably connected to the first connecting plate (11), a through hole (13) coaxial with the screw rod (2) is provided on the second connecting plate (12), and grounding auxiliary fixing rods (14) are provided at intervals along the circumferential direction at the bottom of the second connecting plate (12), and auxiliary holes (15) corresponding to the grounding auxiliary fixing rods (14) are provided on the grounding plate (6); The bottoms of the main grounding fixing rod (7) and the auxiliary grounding fixing rod (14) are both provided with a drill bit (16).

2. A wind farm booster station grounding device according to claim 1, characterized in that: The first connecting plate (11) is provided with a dovetail sliding block (17), and the second connecting plate (12) is provided with a dovetail sliding groove (18) corresponding to the dovetail sliding block (17).

3. A wind farm booster station grounding device according to claim 2, characterized in that: An anti-slip sleeve (10) is provided on the outer side wall of the sleeve (10).

4. A wind farm booster station grounding device according to claim 3, characterized in that: A plurality of fixed balls (19) are arranged at intervals on the lightning rod (1).

5. A wind farm booster station grounding device according to claim 4, characterized in that: A plurality of grounding auxiliary fixing rods (14) are arranged at intervals along the circumferential direction at the bottom of the second connecting plate (12), and the grounding auxiliary fixing rods (14) are evenly distributed on the second connecting plate (12).

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