Wind turbine generator lightning protection grounding device

Abstract

The utility model relates to the technical field of wind turbine generators, in particular to a wind turbine generator lightning protection grounding device, which comprises a lightning rod, the lightning rod is arranged on a first supporting seat and penetrates through the first supporting seat, the bottom of the lightning rod is connected with a grounding lead, and the other end of the grounding lead is connected with a grounding piece; a second supporting seat is arranged below the first supporting seat, an open groove is formed in the middle of the second supporting seat, the lightning rod penetrates through the open groove, a plurality of compression springs which are arranged at intervals are arranged along the edge of the top of the second supporting seat, and the other ends of the compression springs are fixed to the bottom of the first supporting seat. When the lightning protection grounding device for the wind turbine generator is used, the two supporting seats are connected through the plurality of compression springs, and a buffering effect can be achieved when the lightning rod is impacted by strong wind, so that the lightning rod is protected, and the situation that the lightning rod is bent and damaged due to the influence of the strong wind is prevented.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine technology, and in particular to a lightning protection grounding device for wind turbines. Background Technology

[0002] A wind turbine, also known as a wind power generator, is a system that converts the kinetic energy of wind into electrical energy. To allow the wind turbine to better contact the wind, most wind turbines are installed at high locations. However, this also makes the wind turbines vulnerable to lightning strikes during thunderstorms. Therefore, lightning protection grounding devices are installed on wind turbines to prevent lightning from affecting them.

[0003] Most current lightning protection grounding devices are directly fixed to wind turbines by bolts or welding. However, lightning rods are thin in diameter and long in length, making them susceptible to bending or breakage due to external environmental factors. This is especially true in strong winds and heavy rain, where the impact of airflow and rainwater can easily damage the lightning protection grounding devices. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a lightning protection grounding device for wind turbine units.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lightning protection grounding device for wind turbine generators is designed, including a lightning rod, which is installed on a first support base and passes through the first support base. A grounding wire is connected to the bottom of the lightning rod, and the other end of the grounding wire is connected to a grounding component.

[0006] A second support is provided below the first support. A slot is provided in the middle of the second support, and the lightning rod passes through the slot. Several compression springs are arranged at intervals along the top edge of the second support, and the other end of the compression springs is fixed to the bottom of the first support. Mounting seats are installed at the bottom corners of the second support.

[0007] Preferably, a fixing seat is also provided on the lightning rod, and the fixing seat is fixed on the top of the first support seat.

[0008] Preferably, a number of reinforcing plates are arranged at intervals on the side of the fixing base, and the bottom of the reinforcing plates is fixed on the first support base.

[0009] Preferably, the mounting base includes a mounting plate, which is located at the lower corner of the second support base and has mounting holes. A fixing plate is connected to the top of the mounting plate via a connecting plate, and the fixing plate is fixed to the second support base.

[0010] Preferably, the connecting plate is positioned close to the lightning rod, and a plurality of spaced through holes are provided on the bottom of the connecting plate, with the through holes positioned close to the mounting plate.

[0011] Preferably, both the first support and the second support are insulated metal blocks.

[0012] Preferably, the frontal projection position of the second support is located inside the first support, and a baffle is installed along the bottom edge of the first support, wherein the second support is placed inside the baffle, and a gap is left between the inner wall of the baffle and the outer wall of the second support.

[0013] The design scheme proposed in this utility model has the following beneficial effects in application:

[0014] 1. The lightning protection grounding device of this wind turbine unit connects the two support bases through multiple compression springs, which can play a buffering role when the lightning rod is impacted by strong winds, thereby protecting the lightning rod from bending and damage caused by strong winds.

[0015] 2. The lightning protection grounding device of this wind turbine can wrap the edge of the gap between the two support bases by setting up a baffle to prevent rainwater and other substances from falling between the two support bases and causing corrosion to the compression spring. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the top structure of the second support base of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the first support base of this utility model;

[0020] Figure 5 This is a cross-sectional front view of the present invention.

[0021] In the diagram: 1. Lightning rod; 2. First support base; 3. Fixing base; 4. Reinforcing plate; 5. Second support base; 6. Baffle; 7. Slot; 8. Compression spring; 9. Grounding wire; 10. Grounding component; 11. Fixing plate; 12. Mounting plate; 13. Connecting plate; 14. Through hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-5 A lightning protection grounding device for wind turbine generators includes a lightning rod 1, which is mounted on a first support base 2 and passes through the first support base 2. A fixing base 3 is also mounted on the lightning rod 1 and is fixed to the top of the first support base 2 to enhance the stability of the lightning rod 1 on the first support base 2.

[0024] Furthermore, several reinforcing plates 4 are arranged at intervals on the side of the fixing base 3. The reinforcing plates 4 are arranged in the radial direction of the fixing base 3, and the bottom of the reinforcing plates 4 is fixed on the first support base 2. This can strengthen the connection between the fixing base 3 and the first support base 2, thereby further improving the fixing firmness of the lightning rod 1.

[0025] A second support base 5 is provided below the first support base 2. A slot 7 is opened in the middle of the second support base 5, and the lightning rod 1 is installed through the slot 7. Several compression springs 8 are arranged at intervals along the top edge of the second support base 5, and the other end of the compression spring 8 is fixed to the bottom of the first support base 2. Mounting seats are installed at the bottom corners of the second support base 5. When the lightning rod 1 shakes, it will drive the first support base 2 to move together. In this way, the elastic deformation of the compression spring 8 can provide an elastic force opposite to the direction of movement when the lightning rod 1 shakes, thereby buffering the shaking of the lightning rod 1 and reducing the impact of external forces such as strong winds on the lightning rod 1. This protects the lightning rod 1 from breakage, bending, etc.

[0026] It should be noted that in actual use, a gap is left between the inner wall of the slot 7 and the lightning rod 1 to reduce the contact between the lightning rod 1 and the inner wall of the slot 7 when it shakes, so as to prevent the lightning rod 1 from being damaged by collision.

[0027] Specifically, such as Figure 1 As shown, a grounding wire 9 is connected to the bottom of the lightning rod 1, and the other end of the grounding wire 9 is connected to a grounding component 10. After the lightning rod 1 is installed on the wind turbine, the grounding wire 9 can be pulled from inside the wind turbine to the ground, and the grounding component 10 can be placed in the ground for installation and fixation.

[0028] The first support 2 and the second support 5 are both insulated metal blocks, which ensure that after the lightning rod 1 comes into contact with lightning, all the current is transferred to the grounding conductor 9, and the current is prevented from being transferred to the wind turbine through the support.

[0029] When installing lightning rod 1 on the wind turbine, as Figure 1 and 2 As shown, the mounting base includes a mounting plate 12, which is located at the lower corner of the second support base 5. The mounting plate 12 has mounting holes. A fixing plate 11 is connected to the top of the mounting plate 12 via a connecting plate 13. The fixing plate 11 is fixed to the second support base 5. The mounting plate 12 can be placed on the top of the wind turbine, and then bolts can be used to install the lightning rod 1 on the wind turbine through the mounting holes. Another way to install the mounting plate 12 on the wind turbine is to place the mounting plate 12 directly on the top of the wind turbine and weld the mounting plate 12 directly to the wind turbine using a welding gun.

[0030] Furthermore, the connecting plate 13 is positioned close to the lightning rod 1, leaving sufficient space for the mounting plate 12 to be fixed by bolts passing through the mounting holes; several through holes 14 are arranged at intervals on the bottom of the connecting plate 13, and the through holes 14 are positioned close to the mounting plate 12 to prevent rainwater from accumulating between the connecting plate 13 and the mounting plate 12, so as to avoid flooding the bolts and causing corrosion.

[0031] It should be noted that, as Figure 3 and Figure 4 As shown, the frontal projection position of the second support 5 is located inside the first support 2, and a baffle 6 is installed along the bottom edge of the first support 2. The second support 5 is placed inside the baffle 6, and there is a gap between the inner wall of the baffle 6 and the outer wall of the second support 5. In actual use, the lower edge of the baffle 6 is located slightly below the middle of the second support 5, so that the baffle 6 can wrap around the edge of the gap between the first support 2 and the second support 5, thereby blocking external rainwater to prevent rainwater from falling between the two support 2 and causing corrosion to the compression spring 8.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightning protection grounding device for wind turbine generators, characterized in that: Includes a lightning rod (1), which is mounted on a first support base (2) and passes through the first support base (2). A grounding wire (9) is connected to the bottom of the lightning rod (1), and a grounding component (10) is connected to the other end of the grounding wire (9). A second support (5) is provided below the first support (2). A slot (7) is provided in the middle of the second support (5), and the lightning rod (1) is installed through the slot (7). Several compression springs (8) are arranged at intervals along the top edge of the second support (5), and the other end of the compression springs (8) is fixed to the bottom of the first support (2). Mounting seats are installed at the bottom corners of the second support (5).

2. The lightning protection grounding device for wind turbine generators according to claim 1, characterized in that: A fixing seat (3) is also provided on the lightning rod (1), and the fixing seat (3) is fixed on the top of the first support seat (2).

3. A wind turbine lightning protection grounding device according to claim 2, characterized in that: Several reinforcing plates (4) are arranged at intervals on the side of the fixed base (3), and the bottom of the reinforcing plates (4) is fixed on the first support base (2).

4. A wind turbine lightning protection grounding device according to claim 1, characterized in that: The mounting base includes a mounting plate (12), which is located at the lower corner of the second support base (5). The mounting plate (12) has mounting holes. A fixing plate (11) is connected to the top of the mounting plate (12) via a connecting plate (13). The fixing plate (11) is fixed to the second support base (5).

5. A wind turbine lightning protection grounding device according to claim 4, characterized in that: The connecting plate (13) is located near the lightning rod (1), and a number of through holes (14) are arranged at intervals on the bottom of the connecting plate (13), which are located near the mounting plate (12).

6. A wind turbine lightning protection grounding device according to claim 1, characterized in that: Both the first support base (2) and the second support base (5) are insulated metal blocks.

7. A wind turbine lightning protection grounding device according to claim 1, characterized in that: The frontal projection position of the second support (5) is located inside the first support (2), and a baffle (6) is installed along the bottom edge of the first support (2). The second support (5) is placed inside the baffle (6), and there is a gap between the inner wall of the baffle (6) and the outer wall of the second support (5).

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