Detachable wind turbine blade tip lightning receptor

Abstract

The utility model relates to the technical field of wind power blade accessories, concretely to detachable wind power blade blade tip lightning arrester, including the lightning -arresting blade tip of detachable replacement connected in wind power blade end part and the down lead of built -in of wind power blade will current be introduced into the ground, the utility model discloses the lightning -arresting blade tip of detachable replacement is set, when the lightning -arresting blade tip is damaged because of lightning strike etc., can conveniently replace, reduce maintenance cost, the down lead of built -in of wind power blade, can smoothly introduce the current into the ground, play good lightning -protection effect, the plug -in groove of wind power blade end part and the plug -in seat size of lightning -arresting blade tip end part are matched and plug -in cooperation, guarantee the stability and accuracy of connection, the even equidistance locking bolt of several groups of embedding of wind power blade outer wall and the fixed screw hole of plug -in seat outer wall, which are same in number, corresponding in position, matched in size and screwed, can realize the firm fixation of lightning -arresting blade tip.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine blade accessories, specifically a detachable wind turbine blade tip lightning arrester. Background Technology

[0002] With the increasing global demand for renewable energy, wind power, as a clean and renewable energy source, has received widespread attention. Wind turbine blades, as a key component of wind turbine generators, directly affect the efficiency and reliability of wind power generation. Blade tip lightning arresters, as an important component of wind turbine blades, play a crucial role in improving the lightning protection performance of wind turbines. Traditional blade tip lightning arresters are often fixed to wind turbine blades by welding or riveting, resulting in cumbersome and time-consuming installation and disassembly processes. This not only increases maintenance costs but may also damage the wind turbine blades during disassembly. Furthermore, the connection between traditional lightning arresters and wind turbine blades is not tight enough, easily allowing gaps to enter the connection points, such as rainwater and dust, affecting the lightning protection performance and service life of the lightning arrester. Utility Model Content

[0003] The purpose of this invention is to provide a detachable lightning rod at the tip of a wind turbine blade, in order to solve the problems mentioned in the background art, such as the inconvenience of installation and replacement of existing lightning rods at the tip of wind turbine blades and insufficient sealing.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A detachable lightning rod tip for wind turbine blades includes a detachable and replaceable lightning rod tip connected to the end of a wind turbine blade, wherein the wind turbine blade has a built-in down conductor that leads current into the ground.

[0006] The end of the wind turbine blade is provided with a insertion groove, and several sets of evenly spaced locking bolts for fixing the flashover blade tip are embedded on the outer wall of the wind turbine blade.

[0007] The end of the lightning blade tip is coaxially connected to a plug seat that is adapted to the size of the plug slot and is plugged in. The outer wall of the plug seat is provided with a fixing screw hole that is the same number, corresponding in position, adapted in size and threaded in connection with the locking bolts. The end of the plug seat away from the lightning blade tip is connected to several sets of plug connectors.

[0008] One end of the lead wire is connected to a branch line that is the same number and position as the plug. The end of the branch line is coaxially provided with a connection slot that is adapted to the size of the plug and fits into place.

[0009] Preferably, the cross-sectional dimensions of the flashover blade tip are compatible with those of the wind turbine blade.

[0010] Preferably, a sealing gasket is provided between the flashover blade tip and the wind turbine blade.

[0011] Preferably, the thickness of the sealing gasket is 0.5-1mm.

[0012] Preferably, the flashlight blade tip includes a metal inner core and a tipped flashlight head.

[0013] Preferably, the outer wall of the metal core is coated with an anti-corrosion paint with a thickness of 0.2-0.5 mm.

[0014] Preferably, an insulating sleeve is provided on the outer wall of the socket.

[0015] Preferably, the thickness of the insulating sleeve is 0.5-1mm.

[0016] Compared with existing technologies, the beneficial effects of this utility model are:

[0017] 1. This detachable wind turbine blade tip lightning arrester features a replaceable lightning arrester tip, allowing for easy replacement when damaged by lightning strikes or other causes, reducing maintenance costs. The built-in down conductor of the wind turbine blade smoothly conducts current into the ground, providing excellent lightning protection. The insertion slot at the end of the wind turbine blade matches the size of the insertion seat at the tip of the lightning arrester, ensuring stable and accurate connection. Several sets of evenly spaced locking bolts embedded on the outer wall of the wind turbine blade, and the same number, corresponding position, and matching size of threaded fixing screw holes on the outer wall of the insertion seat, securely fix the lightning arrester tip. Several sets of connectors connected to one end of the lightning arrester tip's insertion seat, coaxially connected to the corresponding branch end of the down conductor, ensure smooth current conduction from the lightning arrester tip to the down conductor, thus achieving effective operation of the entire lightning protection system.

[0018] 2. In this detachable wind turbine blade tip lightning arrester, a sealing gasket is provided between the lightning arrester tip and the wind turbine blade. The thickness of the sealing gasket is 0.5-1mm, which effectively prevents rainwater, dust and other impurities from entering the connection gap between the lightning arrester tip and the wind turbine blade, ensuring the sealing and durability of the connection.

[0019] 3. In this detachable wind turbine blade tip lightning arrester, the lightning arrester tip includes a metal inner core and a pointed lightning arrester head. The outer wall of the inner core is coated with anti-corrosion paint with a thickness of 0.2-0.5mm, which not only improves the corrosion resistance of the lightning arrester tip and extends its service life, but also ensures the stable operation of the lightning arrester tip in harsh environments. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0021] Figure 1 This is an exploded structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a cross-sectional exploded view of the present invention;

[0024] 10. Wind turbine blade; 11. Locking bolt; 12. Connecting slot;

[0025] 20. Flashover blade tip; 201. Metal inner core; 202. Tip flashover head; 203. Anti-corrosion paint; 21. Plug-in socket; 22. Fixing screw hole; 23. Sealing washer; 24. Insulating sleeve;

[0026] 30. Connector;

[0027] 40. Down conductor; 41. Branch conductor; 42. Connecting slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. 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] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component 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.

[0030] Detachable wind turbine blade tip lightning arresters, such as Figures 1-3As shown, the wind turbine blade 10 includes a detachable and replaceable lightning rod tip 20 connected to the end of the blade 10. The blade 10 has a built-in down conductor 40 for introducing current into the ground. The end of the blade 10 has a insertion slot 12, and several sets of evenly spaced locking bolts 11 for fixing the lightning rod tip 20 are embedded on the outer wall of the blade 10. The end of the lightning rod tip 20 is coaxially connected to a insertion seat 21 that matches the size of the insertion slot 12 and engages with it. The outer wall of the insertion seat 21 has a groove for engaging with the locking bolts. The bolts 11 have the same number of corresponding positions and sizes, and are connected by threaded screw holes 22. The end of the connector 21 furthest from the lightning blade tip 20 is connected to several sets of connectors 30. One end of the down conductor 40 is connected to a branch line 41 with the same number and corresponding positions as the connectors 30. The end of the branch line 41 has a coaxially formed connecting slot 42 that matches the size of the connectors 30 and is plugged in. The detachable and replaceable lightning blade tip 20 allows for easy replacement when the lightning blade tip 20 is damaged by lightning strikes, etc. When damaged, the system can be easily replaced, reducing maintenance costs. The down conductor 40 built into the wind turbine blade 10 can smoothly conduct current into the ground, achieving a good lightning protection effect. The plug slot 12 at the end of the wind turbine blade 10 is matched in size with the plug seat 21 at the end of the flashover tip 20, ensuring the stability and accuracy of the connection. Several sets of evenly spaced locking bolts 11 embedded on the outer wall of the wind turbine blade 10, and the fixing screw holes 22 on the outer wall of the plug seat 21 that are the same number, corresponding in position, and matched in size and threadedly connected to the locking bolts 11, can firmly fix the flashover tip 20. Several sets of plugs 30 connected to one end of the plug seat 21 of the flashover tip 20 are connected to the connecting slots 42 coaxially opened at the end of the branch line 41 that are the same number and corresponding in position as the plugs 30 connected to one end of the down conductor 40, ensuring that the current can be smoothly conducted from the flashover tip 20 to the down conductor 40, thereby realizing the effective operation of the entire lightning protection system.

[0031] Furthermore, the cross-sectional dimensions of the lightning rod tip 20 are adapted to the cross-section of the wind turbine blade 10, so that the lightning rod tip 20 can fit tightly against the end of the wind turbine blade 10, thereby further improving the installation stability and lightning protection effect of the lightning rod tip 20.

[0032] Specifically, a sealing gasket 23 is provided between the lightning blade tip 20 and the wind turbine blade 10. The thickness of the sealing gasket 23 is 0.5-1mm, which effectively prevents rainwater, dust and other impurities from entering the connection gap between the lightning blade tip 20 and the wind turbine blade 10, ensuring the sealing and durability of the connection.

[0033] The lightning blade tip 20 includes a metal inner core 201 and a tip lightning head 202. The outer wall of the metal inner core 201 is covered with anti-corrosion paint 203 with a thickness of 0.2-0.5mm, which not only improves the corrosion resistance of the lightning blade tip 20 and extends its service life, but also ensures the stable operation of the lightning blade tip 20 in harsh environments.

[0034] In addition, an insulating sleeve 24 is fitted on the outer wall of the plug-in 21. The insulating sleeve 24 has a thickness of 0.5-1mm, which effectively prevents short circuits between the plug-in 21 and the wind turbine blade 10 or other metal parts, thereby improving the safety and reliability of the entire lightning protection device.

[0035] The working principle of this detachable wind turbine blade tip lightning arrester:

[0036] First, clean the insertion slot 12 at the end of the wind turbine blade 10 to ensure it is free of impurities and moisture. Next, align the insertion socket 21 of the flashover blade tip 20 with the insertion slot 12 and slowly insert it until the insertion socket 21 and the insertion slot 12 are fully engaged. Then, align the connection slot 42 at the end of the branch wire 41 of the down conductor 40 with the connector 30 on the insertion socket 21 and gently insert it until the connection slot 42 and the connector 30 are fully engaged. In this way, the down conductor 40 is electrically connected to the flashover blade tip 20. During this process, check whether the fixing screw hole 22 on the insertion socket 21 is aligned with the locking bolt 11 on the wind turbine blade 10.

[0037] Then, use a locking tool to screw the locking bolt 11 into the fixing screw hole 22 until the locking bolt 11 is fully tightened, ensuring that the flashover blade tip 20 is securely installed on the wind turbine blade 10; during this process, the sealing gasket 23 can be used to improve the sealing of the connection.

[0038] Finally, inspect the entire lightning protection device to ensure that all connections are secure and reliable, without any looseness or short circuits.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A detachable lightning arrester at the tip of a wind turbine blade, characterized in that: Includes a detachable and replaceable flashover tip (20) connected to the end of the wind turbine blade (10), and the wind turbine blade (10) has a built-in down conductor (40) that introduces current into the ground. The end of the wind turbine blade (10) is provided with a plug groove (12), and a number of sets of evenly spaced locking bolts (11) for fixing the flashover blade tip (20) are embedded on the outer wall of the wind turbine blade (10). The end of the lightning blade tip (20) is coaxially connected to a plug seat (21) that is adapted to the size of the plug groove (12) and is plugged in. The outer wall of the plug seat (21) is provided with a fixing screw hole (22) that is the same number as the locking bolts (11), corresponding in position, adapted in size and threaded in connection. The end of the plug seat (21) away from the lightning blade tip (20) is connected to a number of plug connectors (30). One end of the lead wire (40) is connected to a branch wire (41) that is the same number and position as the plug (30). The end of the branch wire (41) is coaxially provided with a connection slot (42) that is adapted to the size of the plug (30) and is plugged in.

2. The detachable wind turbine blade tip lightning arrester according to claim 1, characterized in that: The cross-sectional dimensions of the lightning rod tip (20) are adapted to those of the wind turbine blade (10).

3. The detachable wind turbine blade tip lightning arrester according to claim 1, characterized in that: A sealing gasket (23) is provided between the flashover blade tip (20) and the wind turbine blade (10).

4. The detachable wind turbine blade tip lightning arrester according to claim 3, characterized in that: The thickness of the sealing gasket (23) is 0.5-1mm.

5. The detachable wind turbine blade tip lightning arrester according to claim 1, characterized in that: The flash-catching blade tip (20) includes a metal inner core (201) and a tip flash-catching head (202).

6. The detachable wind turbine blade tip lightning arrester according to claim 5, characterized in that: The outer wall of the metal inner core (201) is covered with anti-corrosion paint (203) with a thickness of 0.2-0.5mm.

7. The detachable wind turbine blade tip lightning arrester according to claim 1, characterized in that: An insulating sleeve (24) is fitted on the outer wall of the plug-in socket (21).

8. The detachable wind turbine blade tip lightning arrester according to claim 7, characterized in that: The thickness of the insulating sleeve (24) is 0.5-1mm.

Images