Wind generating set blade tip lightning protection conductivity detection device

Abstract

The utility model discloses a wind generating set blade tip lightning protection conductivity detection device which comprises an unmanned aerial vehicle, the top of the unmanned aerial vehicle is provided with a contact assembly, the middle part of the contact assembly is fixedly connected with a detection line, and the other end of the detection line is connected with a ground resistance detection device. The unmanned aerial vehicle, the detection line, the contact assembly, the rotation adjusting assembly and the protection assembly are arranged, the two ends of the detection line are connected with the metal conductive net of the contact assembly and the ground resistance detection device respectively, and after the unmanned aerial vehicle is controlled to take off, the metal conductive net can make contact with a fan blade flash connection point; the electric conduction between the flash connection point and the resistance detection device is realized, so that the detection of the blade is realized; in the period, the contact assembly can be driven to rotate by a certain angle by rotating the adjusting assembly, if the fan blades are not perpendicular to the ground, the contact assembly can be adjusted to rotate, contact between the metal net and the inclined blades is facilitated, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection detection of wind generator blades, in particular to a lightning protection conductivity detection device for blade tips of wind generator sets. Background Art

[0002] The operating principle of a wind turbine is that its blades rotate in response to the wind, converting the wind's kinetic energy into mechanical energy for the rotor shaft. The generator, driven by the rotor shaft, then generates electricity, ultimately outputting alternating current. A wind turbine primarily consists of rotor blades, a generator, a stabiliser (tail), a tower, a speed limiter, and an energy storage device. The operating process of a wind turbine can be summarized as follows: the rotor rotates in response to the wind, driving the generator through a transmission mechanism. The generator then converts the mechanical energy into electrical energy, ultimately outputting electricity.

[0003] Currently, routine maintenance of wind turbines includes testing blade lightning protection continuity. This test requires a person to ascend to a height and connect a test wire to the lightning terminal at the blade tip. The other end of the test wire is then connected to a ground-based resistance detection device to measure the resistance value of the blade tip lightning terminal. However, this testing method is time-consuming and has relatively low safety. To address these shortcomings, the present invention proposes a wind turbine blade tip lightning protection continuity test device. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a wind turbine blade tip lightning protection conductivity detection device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a wind turbine blade tip lightning protection conductivity detection device, including a drone, a contact assembly is provided on the top of the drone, a detection line is fixedly connected to the middle of the contact assembly, and the other end of the detection line is connected to the ground resistance detection device. A rotating adjustment assembly for driving the contact assembly to rotate is installed on the upper surface of the drone fuselage, a clamping ring is fixed on the outer wall of the drone, and a protective assembly is fixed on the outside of the drone.

[0006] Furthermore, the contact assembly includes an annular rod, a metal conductive mesh is fixedly connected to the interior of the annular rod, and one end of the detection line is fixedly connected to the metal conductive mesh.

[0007] Furthermore, the rotation adjustment component includes a base fixed to the upper surface of the drone fuselage, and a top plate is provided above the base, a top seat is fixed to the upper surface of the top plate, a first motor is fixed inside the top seat, the output shaft of the first motor passes through the side wall of the top seat and is fixedly connected to a rocker arm, the top end of the rocker arm is fixedly connected to a connecting plate, a plurality of support rods are fixed to the bottom end of the annular rod, and the bottom ends of the plurality of support rods are fixedly connected to the upper surface of the connecting plate.

[0008] Furthermore, a second motor is fixed inside the base, and a top output shaft of the second motor passes through the top wall of the base and is fixedly connected to the lower surface of the top plate.

[0009] Furthermore, a controller is installed inside the base, and a signal receiver is fixed to the side wall of the base. A remote controller is provided to match the signal receiver, and the first motor, the second motor and the signal receiver are all electrically connected to the controller.

[0010] Furthermore, the detection line passes through the clamping ring.

[0011] Furthermore, the protection assembly includes a circular protection rod, and a plurality of mounting rods are fixed to the inner side wall of the circular protection rod, and the other ends of the plurality of mounting rods are respectively fixedly connected to the outer side walls of the plurality of propellers of the drone.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, the wind turbine blade tip lightning protection conductivity detection device is provided with a drone, a detection line, a contact component, a rotation adjustment component and a protection component. The two ends of the detection line are respectively connected to the metal conductive mesh of the contact component and the ground resistance detection device. After the drone is controlled to take off, it can touch the lightning terminal of the wind turbine blade through the metal conductive mesh to achieve electrical conduction between the lightning terminal and the resistance detection device, thereby realizing the detection of the blade; during this period, the contact component can be driven to rotate a certain angle by the rotation adjustment component. If the fan blade is not perpendicular to the ground, the contact component can be adjusted to rotate, which is beneficial to the contact between the metal mesh and the inclined blade, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 : The overall three-dimensional diagram of the utility model;

[0016] Figure 2 : A partial cross-sectional view of the utility model;

[0017] Figure 3 : The structured flowchart of the utility model.

[0018] The reference numerals are as follows:

[0019] 1. Drone; 2. Detection line; 3. Contact assembly; 31. Ring rod; 32. Metal conductive mesh; 33. Support rod; 4. Rotation adjustment assembly; 41. Base; 42. Top plate; 43. Top seat; 44. First motor; 45. Rocker arm; 46. Connecting plate; 47. Second motor; 48. Controller; 49. Signal receiver; 5. Snap ring; 6. Protection assembly; 61. Protection rod; 62. Mounting rod. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 3 As shown, a wind turbine blade tip lightning protection conductivity detection device is provided, including a drone 1, a contact component 3 is provided on the top of the drone 1, a detection line 2 is fixedly connected to the middle of the contact component 3, and the other end of the detection line 2 is connected to the ground resistance detection device. A rotating adjustment component 4 for driving the contact component 3 to rotate is installed on the upper surface of the drone 1 fuselage, a clamping ring 5 is fixed on the outer wall of the drone 1, and a protective component 6 is fixed on the outside of the drone 1.

[0022] In this embodiment, the drone 1 is a drone already available in the prior art and is used in conjunction with a drone remote control device.

[0023] The contact assembly 3 includes an annular rod 31 , a metal conductive mesh 32 is fixedly connected to the interior of the annular rod 31 , and one end of the detection line 2 is fixedly connected to the metal conductive mesh 32 .

[0024] After the metal conductive mesh 32 contacts the blade lightning terminal, the detection line 2 is connected to the lightning terminal, thereby electrically connecting the lightning terminal to the ground resistance detection device.

[0025] The rotation adjustment component 4 includes a base 41 fixed to the upper surface of the fuselage of the drone 1, and a top plate 42 is provided above the base 41, a top seat 43 is fixed to the upper surface of the top plate 42, a first motor 44 is fixed inside the top seat 43, the output shaft of the first motor 44 passes through the side wall of the top seat 43 and is fixedly connected to a rocker arm 45, the top of the rocker arm 45 is fixedly connected to a connecting plate 46, a plurality of support rods 33 are fixed to the bottom end of the annular rod 31, and the bottom ends of the plurality of support rods 33 are all fixedly connected to the upper surface of the connecting plate 46.

[0026] After the first motor 44 drives the rocker 45 to rotate a certain angle, the connecting plate 46 and the plurality of support rods 33 can be driven to rotate a specified angle, thereby changing the angle of the metal conductive mesh 32 so that the metal conductive mesh 32 contacts the inclined blades.

[0027] A second motor 47 is fixed inside the base 41 , and an output shaft at the top of the second motor 47 passes through the top wall of the base 41 and is fixedly connected to the lower surface of the top plate 42 .

[0028] By driving the top plate 42 to rotate via the second motor 47 , the top plate 42 can be driven to rotate horizontally, thereby driving the contact assembly 3 to rotate horizontally, further improving the adjustment flexibility of the contact assembly 3 .

[0029] A controller 48 is installed inside the base 41 , and a signal receiver 49 is fixed to the side wall of the base 41 . A remote controller is provided to match the signal receiver 49 . The first motor 44 , the second motor 47 and the signal receiver 49 are all electrically connected to the controller 48 .

[0030] After the remote control transmits the command on the ground, the signal receiver 49 receives the command and then feeds the signal back to the controller 48 , which controls the first motor 44 or the second motor 47 to start, thereby adjusting the angle of the contact component 3 .

[0031] The detection line 2 passes through the clamp ring 5. After the detection line 2 is clamped into the clamp ring 5, it can prevent the detection line 2 from shaking when the drone 1 takes off, thereby preventing the propeller blades of the drone 1 from damaging the detection line 2.

[0032] The protection assembly 6 includes a circular protection rod 61 , and a plurality of mounting rods 62 are fixed to the inner side wall of the circular protection rod 61 . The other ends of the plurality of mounting rods 62 are respectively fixedly connected to the outer side walls of the plurality of propellers of the drone 1 .

[0033] After the drone 1 takes off, the protection component 6 on the outside of the drone 1 can protect the drone 1 and prevent the drone 1 from colliding with the wind turbine.

[0034] Working principle: First connect the detection line 2 to the ground resistance detection device, and then control the drone 1 to take off. If the generator blades are not perpendicular to the ground and when the metal conductive mesh 32 is close to the blade lightning connection point, the first motor 44 or the second motor 47 can be controlled by the remote control to start, thereby driving the metal conductive mesh 32 to rotate a certain angle, which is conducive to the contact between the metal conductive mesh 32 and the lightning connection point. When the metal conductive mesh 32 contacts the lightning connection point, the resistance of the blade tip lightning connection point can be measured by the detection device.

[0035] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wind turbine blade tip lightning protection conductivity detection device, comprising a drone (1), characterized in that: The top of the drone (1) is provided with a contact assembly (3), the middle of the contact assembly (3) is fixedly connected to a detection line (2), the other end of the detection line (2) is connected to a ground resistance detection device, a rotary adjustment assembly (4) for driving the contact assembly (3) to rotate is installed on the upper surface of the drone (1), a clamping ring (5) is fixed to the outer wall of the drone (1), and a protective assembly (6) is fixed to the outer side of the drone (1).

2. The wind turbine blade tip lightning protection conductivity detection device according to claim 1, characterized in that: The contact assembly (3) comprises an annular rod (31), a metal conductive mesh (32) is fixedly connected inside the annular rod (31), and one end of the detection line (2) is fixedly connected to the metal conductive mesh (32).

3. The wind turbine blade tip lightning protection conductivity detection device according to claim 2, characterized in that: The rotation adjustment component (4) includes a base (41) fixed on the upper surface of the fuselage of the unmanned aerial vehicle (1), and a top plate (42) is provided above the base (41), a top seat (43) is fixed on the upper surface of the top plate (42), a first motor (44) is fixed inside the top seat (43), an output shaft of the first motor (44) passes through the side wall of the top seat (43) and is fixedly connected to a rocker (45), the top end of the rocker (45) is fixedly connected to a connecting plate (46), a plurality of support rods (33) are fixed to the bottom end of the annular rod (31), and the bottom ends of the plurality of support rods (33) are fixedly connected to the upper surface of the connecting plate (46).

4. The wind turbine blade tip lightning protection conductivity detection device according to claim 3, characterized in that: A second motor (47) is fixed inside the base (41), and a top output shaft of the second motor (47) passes through the top wall of the base (41) and is fixedly connected to the lower surface of the top plate (42).

5. The wind turbine blade tip lightning protection conductivity detection device according to claim 4, characterized in that: A controller (48) is installed inside the base (41), and a signal receiver (49) is fixed to the side wall of the base (41). A remote controller is provided to match the signal receiver (49). The first motor (44), the second motor (47) and the signal receiver (49) are all electrically connected to the controller (48).

6. The wind turbine blade tip lightning protection conductivity detection device according to claim 1, characterized in that: The detection line (2) passes through the clamping ring (5).

7. The wind turbine blade tip lightning protection conductivity detection device according to claim 1, characterized in that: The protection assembly (6) comprises a circular protection rod (61), and a plurality of mounting rods (62) are fixed to the inner side wall of the circular protection rod (61), and the other ends of the plurality of mounting rods (62) are respectively fixedly connected to the outer side walls of the plurality of propellers of the drone (1).

Images