Wind turbine blade lightning protection conductivity detection device based on unmanned aerial vehicle

Abstract

The invention discloses an unmanned aerial vehicle-based fan blade lightning protection conductivity detection device, which comprises an unmanned aerial vehicle and a ground measurement device, and further comprises a probe rod mounted on the unmanned aerial vehicle, the end part of the probe rod is elastically connected with a metal net assembly, and the metal net assembly is connected with the ground measurement device through a wire. The device is mainly composed of a rod-shaped net structure and is small in wind resistance, simple in structural assembly, stable, reliable, convenient to operate and high in safety; the contact angle of the contact metal net in the structure can be automatically adjusted according to the posture of the blade tip lightning arrester, so that the contact is good, the detection accuracy is improved, and the elastic connecting assembly also prevents the unmanned aerial vehicle from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation detection equipment, and more specifically, to a lightning protection conductivity detection device for wind turbine blades based on an unmanned aerial vehicle (UAV). Background Art

[0002] Wind turbine blades are one of the core components of wind turbines, accounting for about 15%-20% of the total cost of wind turbines. The quality of their design will directly affect the performance and efficiency of wind turbines. Since wind turbines are relatively tall and located in open areas, and lightning strikes are also a major cause of wind turbine damage, lightning protection is very important for wind turbines. Due to the influence of the environment and lightning strikes during the long-term operation of wind turbine blades, the lightning protection lightning lead will show phenomena such as wear and fracture. Without detailed lightning protection detection, it is impossible to timely detect whether it is damaged and cannot conduct, increasing the risk of lightning disasters. Therefore, it is necessary to frequently detect the wind turbine blades of wind turbines.

[0003] Traditional detection methods require using a hanging basket to lift the operator to the lightning receiving part at the blade tip, and then manually connect the wire to the lightning arrester to measure the grounding resistance. This method has low efficiency and high danger in high-altitude operations. There are also some solutions that install a bracket and a contact component on the UAV, and use the UAV to hover in the air to make the contact component contact the blade tip lightning arrester. However, this kind of contact is mostly point contact, and the contact points are prone to poor contact. At the same time, the contact component and the UAV are rigidly connected, and it is easy to crash the UAV during the hovering contact process, making it difficult to ensure accurate detection and having a high risk of equipment loss.

[0004] Therefore, how to provide a new detection device and method to avoid the above problems is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the technical solution of the present invention provides a lightning protection conductivity detection device for wind turbine blades of a UAV, which uses elastic connection to avoid crashing the UAV, and has a simple structure and strong practicability.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A lightning protection conductivity detection device for wind turbine blades based on a UAV includes a UAV and a ground measurement device, and further includes a probing rod installed on the UAV;

[0008] The end of the probing rod is elastically connected with a metal mesh assembly;

[0009] The metal mesh assembly is connected to the ground measurement device through a wire.

[0010] Preferably, the probing rod is installed on the UAV through a snap component.

[0011] Further, the buckle assembly includes a first buckle and a second buckle, and the first buckle and the second buckle are rotatably connected relative to each other.

[0012] Further, the first buckle and the second buckle are rotatably connected relative to each other through a first rotating shaft.

[0013] Preferably, the probing rod is a hollow tubular structure made of a lightweight and high-strength material.

[0014] Further, the probing rod is made of carbon fiber or aluminum alloy.

[0015] Preferably, a tip is provided at the end of the probing rod, a spring is connected to the tip, the other end of the spring is connected to a sliding block, and both the spring and the sliding block are sleeved on the surface of the probing rod;

[0016] The metal mesh assembly is rotatably connected to the sliding block.

[0017] Further, the metal mesh assembly is rotatably connected to the sliding block through a second rotating shaft.

[0018] Further, the metal mesh assembly includes a metal mesh and metal sheets pressed on both ends of the metal mesh. The metal sheets are rotatably connected to the sliding block, and the metal sheets are connected to a ground measuring device through wires.

[0019] Preferably, the metal mesh assembly is made of copper or aluminum.

[0020] Through the above technical solutions, compared with the prior art, the present invention discloses a lightning protection conductivity detection device for a wind turbine blade based on an unmanned aerial vehicle, which has the following beneficial effects:

[0021] The device of the present invention is mainly composed of a rod-shaped and a mesh structure, which has small wind resistance, simple structure assembly, stability and reliability, convenient operation and high safety; in this structure, the contact metal mesh can automatically adjust the contact angle according to the attitude of the tip lightning arrester to make the contact good, improve the detection accuracy, and the elastic connection assembly also avoids damage to the unmanned aerial vehicle. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0023] Figure 1 It is the overall structure diagram of the lightning protection conductivity detection device for a wind turbine blade based on an unmanned aerial vehicle;

[0024] Figure 2 Structural diagram of the metal mesh component part and related connection parts

[0025] Figure 3 Structural diagram of the first rotating shaft

[0026] In the figure, 1 - drone, 2 - probing rod, 3 - metal mesh component, 31 - metal mesh, 32 - metal sheet, 33 - second rotating shaft, 4 - buckle component, 41 - first buckle, 42 - second buckle, 43 - first rotating shaft, 5 - end, 6 - spring, 7 - sliding block Specific implementation manners

[0027] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention

[0028] As shown in the appended Figure 1 , a lightning protection conductivity detection device for a wind turbine blade based on a drone, includes a drone 1 and a ground measurement device. The ground measurement device can adopt a conventional measurement device in the market in this field, such as a VICHY VC480C digital milliohm meter, and also includes a probing rod 2 installed on the drone

[0029] The end of the probing rod 2 is elastically connected with a metal mesh component 3

[0030] The metal mesh component 3 is connected to the ground measurement device through a wire

[0031] As shown in the appended Figure 1 , in order to ensure the balance of the drone, in a more specific technical solution, the probing rod 2 should be kept as balanced or centered at the top or bottom of the drone as much as possible to prevent uneven weight of the drone

[0032] As shown in the appended Figure 1 and 3 shown, the probing rod 2 is installed on the cantilever of the drone 1 through a buckle component 4. The buckle component includes a first buckle 41 and a second buckle 42, as shown in Figure 3As shown, it is only one embodiment of the present invention. It adopts a circular tube shape that matches the shape of the touch rod 2, with an axial opening, and the opening width is less than the diameter. The material can be selected from rigid elastic materials (such as PVC or nylon, etc.). The outer walls of the opposite sides of the open ends of the buckle one 41 and the buckle two 42 are connected by a rotating shaft one 43, so that the buckle one 41 and the buckle two 42 can rotate relative to each other and can be rotated and adjusted according to the installation angle of the cantilever of the drone 1 and the touch rod 2. The rotating shaft one 43 can adopt a commercially available finished rotating shaft that can match the size of the buckle, or it can be composed of components. For example, a plug rod is integrally provided on the buckle one 41, a protrusion is provided on the side wall of the plug rod, a slot matching the plug rod is integrally provided on the buckle two 42, and a groove matching the protrusion is provided on the inner side wall of the slot.

[0033] As shown in the appendix Figure 2 As shown, a head 5 is provided at the end of the touch rod 2. A spring 6 is connected to the head 5, and the other end of the spring 6 is connected to a sliding block 7. Both the spring 6 and the sliding block 7 are sleeved on the surface of the touch rod 2; the metal mesh assembly 3 includes a metal mesh 31 and metal sheets 32 pressed on both ends of the metal mesh 31. The metal sheets 32 are rotatably connected to the sliding block 7, and the metal mesh 31 is connected to the ground measuring device through a wire;

[0034] As shown in the appendix Figure 2 As shown in the appendix, the metal mesh assembly 3 is rotatably connected to the sliding block 7 through a rotating shaft two 33. The rotating shaft two 33 can adopt a commercially available finished rotating shaft that can match the sizes of the metal sheet 32 and the sliding block 7, or it can be composed of components. For example, a plug rod is integrally provided on the metal sheet 32, a protrusion is provided on the side wall of the plug rod, a slot matching the plug rod is integrally provided on the sliding block 7, and a groove matching the protrusion is provided on the inner side wall of the slot.

[0035] In some more specific technical solutions, the touch rod 2 adopts a hollow tubular structure made of lightweight and high-strength materials, such as carbon fiber or aluminum alloy materials; the metal mesh assembly 3 is a copper mesh, an aluminum mesh or other materials with good conductivity.

[0036] During the operation of the device, after being assembled through the buckle assembly 4 and other components, the wire is connected to the ground measuring device, and the drone 1 is controlled to take off to the detection position. During the process that the metal mesh 31 contacts the tip lightning arrester of the wind turbine blade, the rotating shaft two 33 automatically rotates to adjust the angle of the metal sheet 32 to make the contact good. At the same time, the spring 6 deforms to make the contact an elastic contact to avoid crashing the plane.

[0037] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0038] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An unmanned aerial vehicle (UAV)-based lightning protection conductivity detection device for a fan blade, comprising a UAV and a ground measurement device, characterized in that, It further includes a probing rod installed on the drone; The end of the probing rod is elastically connected with a metal mesh assembly; The metal mesh assembly is connected to the ground measuring device through a wire.

2. The lightning protection conductivity detection device for fan blades based on an unmanned aerial vehicle according to claim 1, characterized in that, The probing rod is installed on the drone through a snap component.

3. The lightning protection conductivity detection device for fan blades based on an unmanned aerial vehicle according to claim 2, characterized in that, The snap component includes a first snap and a second snap, and the first snap and the second snap are relatively rotatably connected.

4. The lightning protection conductivity detection device for fan blades based on an unmanned aerial vehicle according to claim 3, wherein, The first snap and the second snap are relatively rotatably connected through a first rotating shaft.

5. The lightning protection conductivity detection device for a fan blade based on an unmanned aerial vehicle according to claim 1, characterized in that, The probing rod is a hollow tubular structure made of a lightweight and high-strength material.

6. The lightning protection conductivity detection device for a fan blade based on an unmanned aerial vehicle according to claim 5, wherein, The probing rod is made of carbon fiber or aluminum alloy.

7. The lightning protection conductivity detection device for a fan blade based on an unmanned aerial vehicle according to claim 1, characterized in that A head is arranged at the end of the probing rod, a spring is connected to the head, the other end of the spring is connected with a sliding block, and the spring and the sliding block are both sleeved on the surface of the probing rod; The metal mesh assembly is rotatably connected to the sliding block.

8. The lightning protection conductivity detection device for a fan blade based on an unmanned aerial vehicle according to claim 7, characterized in that, The metal mesh assembly is rotatably connected to the sliding block through a second rotating shaft.

9. The lightning protection conductivity detection device for a fan blade based on a drone according to claim 7 or 8, characterized in that, The metal mesh assembly includes a metal mesh and metal sheets pressed at both ends of the metal mesh. The metal sheets are rotatably connected to the sliding block, and the metal sheets are connected to the ground measuring device through wires.

10. The lightning protection conductivity detection device for a wind turbine blade based on an unmanned aerial vehicle according to claim 1, characterized in that, The metal mesh assembly is made of copper or aluminum.

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