Blade tip lightning protection conductivity detection device for fan unit modified by unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle modified fan unit blade tip lightning protection conductivity detection device, which comprises an unmanned aerial vehicle body, a plurality of supporting seats are fixed on the upper surface of a fuselage of the unmanned aerial vehicle body, an inclined supporting rod is fixed on the top of each supporting seat, and the supporting rods are fixed on the upper surface of the unmanned aerial vehicle body. The top ends of the multiple supporting rods are jointly and fixedly connected with a conductive net assembly, and the center of the conductive net assembly is fixedly connected with a detection line. According to the unmanned aerial vehicle, the unmanned aerial vehicle body, the supporting rods, the conductive net assembly, the detection line and the annular anti-collision rod are arranged, after the unmanned aerial vehicle takes off, the conductive net assembly makes contact with the flash receiving points at the tips of the fan blades, the area of the conductive net assembly is large, the conductive net assembly makes contact with the flash receiving points of the fan blades easily, and then the unmanned aerial vehicle body is controlled to hover; the straight wire or the annular wire of the conductive net assembly is ensured to be in contact with the blade tip flash point, and the detection line is connected with a ground detector, so that the ground resistance (transition resistance) is detected by using the detector.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection detection of fan blades, in particular to a device for detecting the lightning protection conductivity at the tip of fan blades of a fan unit modified by an unmanned aerial vehicle (UAV). Background Art

[0002] A wind turbine is a power device that converts wind energy into mechanical work. The mechanical work drives the rotor to rotate, and finally outputs alternating current. A wind turbine generally consists of components such as blades, a generator (including devices), a yaw device (tail fin), a tower, a speed limit safety mechanism, and an energy storage device. The working principle of a wind turbine is relatively simple. The blades rotate under the action of wind, converting the kinetic energy of the wind into the mechanical energy of the wind turbine shaft. The generator rotates to generate electricity driven by the wind turbine shaft.

[0003] Since the volume of the wind turbine blades is very large, they are prone to being struck by lightning during thunderstorms. Therefore, lightning connection points are provided at the tips of the blades. During the daily inspection and maintenance of the wind turbine, a detection device is required to detect the resistance of the lightning connection points. The current detection method is as follows: An elevator is used to send the detection personnel to the bottom of the blade, and then the detection line connected to the detection device is connected to the tip of the blade. The ground personnel measure the grounding resistance through the detection device. However, this method is not only troublesome but also has relatively high safety risks. Therefore, in view of the above-mentioned disadvantages, the utility model proposes a device for detecting the lightning protection conductivity at the tip of fan blades of a fan unit modified by an unmanned aerial vehicle (UAV). Summary of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose a device for detecting the lightning protection conductivity at the tip of fan blades of a fan unit modified by an unmanned aerial vehicle (UAV).

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A device for detecting the lightning protection conductivity at the tip of fan blades of a fan unit modified by an unmanned aerial vehicle (UAV), including a UAV body. A plurality of support seats are fixedly arranged on the upper surface of the body of the UAV. An inclined support rod is fixedly arranged on the top of each support seat. The tops of the plurality of support rods are fixedly connected together to form a conductive network assembly. A detection line is fixedly connected to the center of the conductive network assembly. The other end of the detection line is connected to a grounding resistance detection device. A snap ring is fixedly arranged on the side wall of the body of the UAV. An anti-collision assembly is fixedly arranged outside the propeller of the UAV.

[0006] Furthermore, the conductive network assembly includes a circular ring. The tops of the plurality of support rods are in an open shape, and the tops of the plurality of support rods are fixedly connected to the circular ring. A plurality of straight wires are fixedly arranged inside the circular ring, and all the straight wires pass through the center of the circular ring. A plurality of circular wires with different diameters are arranged inside the circular ring, and the centers of the plurality of circular wires coincide with the center of the circular ring. The intersections of the plurality of circular wires and the plurality of straight wires are fixed by welding.

[0007] Furthermore, the central intersection points of several of the straight conductors are fixed by welding, and the detection line is fixedly connected to the central intersection points of several straight conductors.

[0008] Furthermore, both the support rod and the ring are made of plastic material.

[0009] Furthermore, the anti-collision assembly includes an annular anti-collision rod located outside the drone body. A plurality of connecting rods are fixed to the inner side wall of the annular anti-collision rod. The number of the connecting rods is the same as the number of the propellers of the drone body. One ends of the plurality of connecting rods away from the annular anti-collision rod are respectively fixedly connected to the outer side walls of the plurality of propellers.

[0010] Furthermore, one end of the detection line away from the conductive network assembly passes through the snap ring and is connected to the grounding resistance detection device.

[0011] Furthermore, the anti-collision assembly is made of plastic material.

[0012] Advantages of the present utility model:

[0013] When the present utility model is in use, for a lightning protection conductivity detection device for the tip of a fan unit blade modified from a drone, a drone body, a support rod, a conductive network assembly, a detection line and an annular anti-collision rod are provided. After the drone takes off, the conductive network assembly is made to touch the contact point of the tip of the fan blade. Since the conductive network assembly has a large area, it is easy to contact the contact point of the fan blade. Subsequently, the drone body is controlled to hover to ensure that the straight conductors or annular conductors of the conductive network assembly are in contact with the tip contact point of the blade. The detection line is connected to the ground detector, so as to detect the grounding resistance (transition resistance) by using the detector. A snap ring is also fixed on the surface of the drone body, and the detection line can pass through the snap ring to realize the restraint of the detection line and prevent the propeller of the drone from hitting the detection line. Using this device to detect the resistance at the tip of the blade, there is no need for the detection personnel to climb to a high place for detection, which is more portable and has higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 : Overall three-dimensional view of the present utility model;

[0016] Figure 2 : Top view of the conductive network assembly of the present utility model;

[0017] Figure 3 : Of the present utility model Figure 1Enlarged view at location A in the [device].

[0018] The reference numerals are as follows:

[0019] 1. UAV body; 2. Support base; 3. Support rod; 4. Conductive grid assembly; 41. Ring; 42. Straight wire; 43. Annular wire; 5. Detection wire; 6. Snap ring; 7. Annular anti-collision bar; 8. Link rod. Specific implementation manner

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0021] As Figures 1-3 shown, it relates to a lightning protection conductivity detection device for the tip of a fan unit blade modified from a UAV, including a UAV body 1. A plurality of support bases 2 are fixed on the upper surface of the fuselage of the UAV body 1. An inclined support rod 3 is fixed on the top of each support base 2. A conductive grid assembly 4 is fixedly connected to the tops of the plurality of support rods 3 together. A detection wire 5 is fixedly connected to the center of the conductive grid assembly 4. The other end of the detection wire 5 is connected to a grounding resistance detection device. A snap ring 6 is fixed on the side wall of the UAV body 1, and an anti-collision assembly is fixed outside the propeller of the UAV body 1.

[0022] In this embodiment, the UAV body 1 uses a UAV in the prior art and is used with a UAV remote controller.

[0023] The conductive grid assembly 4 includes a ring 41. The tops of the plurality of support rods 3 are in an open shape, and the tops of the plurality of support rods 3 are fixedly connected to the ring 41. A plurality of straight wires 42 are fixed inside the ring 41, and all the plurality of straight wires 42 pass through the center of the ring 41. A plurality of annular wires 43 with different diameters are arranged inside the ring 41, and the plurality of annular wires 43 coincide with the center of the ring 41. The intersections of the plurality of annular wires 43 and the plurality of straight wires 42 are fixed by welding.

[0024] The plurality of straight wires 42 and the plurality of annular wires 43 form a metal mesh, and the contact area is larger. After the UAV takes off, the metal mesh is more likely to contact the tip of the blade.

[0025] The intersection points in the middle of the plurality of straight wires 42 are fixed by welding, and the detection wire 5 is fixedly connected to the intersection points in the middle of the plurality of straight wires 42.

[0026] Therefore, the detection line 5 is electrically connected to all the straight wires 42 and all the loop wires 43. When any one of the straight wires 42 or the loop wires 43 comes into contact with the blade tip, the detection line 5 is electrically connected to the blade tip. At this time, the ground resistance can be detected through the detection device on the ground.

[0027] The anti-collision component includes an annular anti-collision bar 7 located outside the UAV body 1. A plurality of connecting rods 8 are fixed to the inner side wall of the annular anti-collision bar 7. The number of the connecting rods 8 is the same as the number of the propellers of the UAV body 1. One ends of the plurality of connecting rods 8 away from the annular anti-collision bar 7 are respectively fixedly connected to the outer side walls of the plurality of propellers.

[0028] After the UAV body 1 takes off, the annular anti-collision bar 7 can play a protective role outside the UAV body 1 to prevent the propellers from contacting the blades, thereby damaging the UAV body 1. The plurality of connecting rods 8 and the outer side walls of the propellers of the UAV body 1 are fixedly connected by bolts. Therefore, when the anti-collision component is damaged, the whole anti-collision component can be disassembled and replaced.

[0029] One end of the detection line 5 away from the conductive network component 4 passes through the snap ring 6 and is connected to the ground resistance detection device.

[0030] The snap ring 6 can clamp and restrain the detection line 5 to prevent the propeller from hitting the detection line 5 when the detection line 5 swings randomly after the UAV body 1 takes off, playing a role in protecting the detection line 5.

[0031] The support rod 3, the circular ring 41 and the anti-collision component are made of plastic material. The plastic material is a light plastic material, which can reduce the take-off burden of the UAV body 1.

[0032] Working principle: First, connect one end of the detection line 5 away from the conductive network component 4 to the ground resistance detection device, and then the ground personnel control the UAV body 1 to take off, so that the metal mesh composed of the straight wires 42 and the loop wires 43 contacts the blade tip. At this time, the ground resistance value (transition resistance) of the blade contact point can be detected through the detection device. After detecting one blade, another blade can be detected.

[0033] The above disclosed preferred embodiments of the present invention are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A lightning protection conductivity detection device for the blade tip of a fan unit modified from a drone, comprising a drone body (1), characterized in that: A plurality of support seats (2) are fixedly arranged on the upper surface of the fuselage of the unmanned aerial vehicle body (1). An inclined support rod (3) is fixedly arranged on the top of each support seat (2). The tops of the plurality of support rods (3) are fixedly connected together to form a conductive net assembly (4). A detection line (5) is fixedly connected to the center of the conductive net assembly (4). The other end of the detection line (5) is connected to a grounding resistance detection device. A snap ring (6) is fixedly arranged on the side wall of the fuselage of the unmanned aerial vehicle body (1). An anti-collision assembly is fixedly arranged outside the propellers of the unmanned aerial vehicle body (1).

2. The lightning protection conduction detection device for the blade tip of the fan unit modified from a drone according to claim 1, characterized in that: The conductive net assembly (4) includes a circular ring (41). The tops of the plurality of support rods (3) are in an open shape, and the tops of the plurality of support rods (3) are fixedly connected to the circular ring (41). A plurality of straight conductors (42) are fixedly arranged inside the circular ring (41), and all the plurality of straight conductors (42) pass through the center of the circular ring (41). A plurality of circular conductors (43) with different diameters are arranged inside the circular ring (41), and the centers of the plurality of circular conductors (43) coincide with the center of the circular ring (41). The intersections of the plurality of circular conductors (43) and the plurality of straight conductors (42) are fixed by welding.

3. The lightning protection conductivity detection device for the blade tip of the fan unit modified from the unmanned aerial vehicle according to claim 2, wherein: The intersections in the middle of the plurality of straight conductors (42) are fixed by welding, and the detection line (5) is fixedly connected to the intersections in the middle of the plurality of straight conductors (42).

4. The lightning protection conductivity detection device for the blade tip of the fan unit modified from the unmanned aerial vehicle according to claim 2, wherein: Both the support rod (3) and the circular ring (41) are made of plastic material.

5. The lightning protection conductivity detection device for the blade tip of the fan unit modified from a drone according to claim 1, wherein: The anti-collision assembly includes an annular anti-collision rod (7) arranged outside the unmanned aerial vehicle body (1). A plurality of connecting rods (8) are fixedly arranged on the inner side wall of the annular anti-collision rod (7). The number of the connecting rods (8) is the same as the number of the propellers of the unmanned aerial vehicle body (1). The ends of the plurality of connecting rods (8) far away from the annular anti-collision rod (7) are respectively fixedly connected to the outer side walls of the plurality of propellers.

6. The lightning protection conduction detection device for the blade tip of a fan unit modified from a drone according to claim 1, characterized in that: One end of the detection line (5) far away from the conductive net assembly (4) passes through the snap ring (6) and is connected to the grounding resistance detection device.

7. An apparatus for detecting the lightning protection conductivity of the blade tip of a fan unit modified from a drone according to claim 1, characterized in that: The anti-collision assembly is made of plastic material.

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