Active self-checking device for wind turbine blade damage

Abstract

The invention discloses a wind turbine blade damage active self-checking device, and relates to the technical field of wind turbine blade self-checking, the wind turbine blade damage active self-checking device comprises a base, a wind turbine blade is arranged at the top of the base, a self-checking mechanism is arranged in the upper part of the base, the self-checking mechanism comprises a T-shaped plate arranged in the upper part of the base, and one side, close to the base, of the T-shaped plate is fixedly connected with a first motor; a rotating disc is arranged at the output end of the first motor, a sliding rod is fixedly connected to the side, away from the first motor, of the rotating disc, and an oval plate is arranged on the side, close to the rotating disc, of the sliding rod, blade damage can be automatically and rapidly detected through ultrasonic waves, the detection efficiency is high, the detection speed is high, and the labor intensity of workers is relieved; when the wind turbine blade is detected, the blade can be fixed, so that the condition that the detection result has an error due to the fact that the blade is in the air and shakes is effectively prevented, and the stability during self-detection is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade self-inspection, and in particular to an active self-inspection device for wind turbine blade damage. Background Art

[0002] A wind turbine, also known as a wind wheel or windmill, is a power machine that converts wind energy into mechanical energy. It is a key component in a wind power generation system, working with a generator to ultimately convert wind energy into electrical energy. A wind turbine is mainly composed of blades, a hub, a nacelle, a tower, and other parts. Among them, the blade is a key component for capturing wind energy, and its length and shape have an important impact on the performance of the wind turbine. Ordinary wind turbine blades are more than 40 meters long, while the current largest wind turbine blade is more than 100 meters long, far exceeding the wing length of a large passenger aircraft. As a key component of a wind turbine generator set, the quality and condition of wind turbine blades are directly related to the operational safety of the entire unit. Through regular inspections, potential problems such as cracks, breakage, and deformation of the blades can be discovered in a timely manner to prevent unit shutdowns or more serious safety accidents caused by blade failures.

[0003] In the prior art, maintenance workers need to use drones to inspect wind turbine blades. Since most wind turbines are scattered in the wild, drone inspections alone are not only difficult to operate, but also increase the labor intensity of workers. In addition, when inspecting the blades, since the blades are in the air, the blades are prone to shaking, resulting in errors in the inspection results and affecting the inspection efficiency. Therefore, an active self-inspection device for wind turbine blade damage is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that maintenance workers need to use drones to inspect wind turbine blades. Since most wind turbines are scattered in the wild, relying solely on drone inspections is not only difficult to operate, but also increases the labor intensity of workers. Moreover, when inspecting the blades, since the blades are in the air, the blades are prone to shaking, resulting in errors in the detection results and affecting the detection efficiency. A wind turbine blade damage active self-inspection device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A wind turbine blade damage active self-inspection device comprises a base, a self-inspection mechanism is arranged inside the upper part of the base, the self-inspection mechanism comprises a T-shaped plate arranged inside the upper part of the base, a first motor is fixedly connected to the side of the T-shaped plate close to the base, a turntable is arranged at the output end of the first motor, a slide bar is fixedly connected to the side of the turntable away from the first motor, an elliptical plate is arranged on the side of the slide bar close to the turntable, a half-angle gear is drivingly connected to the elliptical plate, a rack rod is meshingly connected to the side of the half-angle gear away from the elliptical plate, an ultrasonic probe is fixedly installed on the side of the rack rod close to the half-angle gear, and the operation of the first motor causes the ultrasonic probe to change from a static state to a moving state;

[0007] A fixing rod is fixedly connected to the top of the base, a fixing mechanism is arranged outside the fixing rod, the fixing mechanism includes an octagonal base arranged outside the fixing rod, a second motor is fixedly connected below the octagonal base, a gear is arranged at the output end of the second motor, a full-angle gear rod is meshingly connected to the side of the gear, a first clamping plate is rotatably connected to the side of the full-angle gear rod away from the gear, and the operation of the fixing mechanism causes the first clamping plate to change from a static state to a mobile rotating state, and a second clamping plate is arranged on the side of the octagonal base close to the first clamping plate.

[0008] The above technical solution further includes:

[0009] A square groove is provided inside the base, the T-shaped plate is fixedly installed on the inner wall of the square groove, a sliding groove is provided inside the elliptical plate, the sliding groove is slidably connected to the sliding rod, a bearing is rotatably connected to the side of the elliptical plate away from the sliding rod, and the bearing is fixedly connected to the T-shaped plate.

[0010] A wind potential energy converter is fixedly connected to the top of the base, a wind turbine blade is arranged on the top of the base, and the wind potential energy converter is transmission-connected to the wind turbine blade.

[0011] A buckle is symmetrically connected to one side of the T-shaped plate close to the rack rod, and the buckle is slidably connected to the rack rod.

[0012] An ultrasonic detector is installed on one side of the square groove close to the T-shaped plate;

[0013] Among them, ultrasonic testing is based on the propagation and reflection characteristics of ultrasound in materials. When ultrasound passes through the material and encounters defects (such as delamination, debonding, pores, inclusions, etc.), it will be reflected, scattered or attenuated. These signals are captured by the receiver and converted into electrical signals. Then, through data processing and analysis, the location, size and type of defects can be identified.

[0014] The full-angle gear rod is rotationally connected to the octagonal base, the side of the full-angle gear rod close to the gear is meshed with a half-angle gear rod, the half-angle gear rod is rotationally connected to the second clamping plate, and the second clamping plate is rotationally connected to the octagonal base.

[0015] A connecting piece is rotatably connected to a side of the first clamping plate away from the full-angle gear rod, and the connecting piece is rotatably connected to the octagonal base.

[0016] A fixing plate is fixedly connected to the side of the wind potential energy converter away from the base, a water pipe is fixedly connected to the side of the fixing plate, a high-pressure nozzle is arranged on the side of the fixing plate away from the wind potential energy converter, the water pipe and the high-pressure nozzle are fixedly connected, and the fixing plate can control the high-pressure nozzle to perform water spraying operations.

[0017] The present invention has the following beneficial effects:

[0018] 1. In the present invention, the first motor controls the rotation of the turntable, the turntable drives the sliding rod to move, the sliding drives the elliptical plate to rotate, the elliptical plate makes the sliding rod slide in the slide groove, so that the half-angle gear rotates around the bearing part, the bearing part drives the rack rod to move, and the rack rod drives the ultrasonic probe to move. When inspecting the wind turbine blades, there is no need for maintenance workers to perform drone inspections. Ultrasonic waves can be used quickly and automatically for autonomous inspections. The inspection efficiency is high and the speed is fast, the operation is simple, the labor intensity of the staff is reduced, and the working efficiency of the device is improved.

[0019] 2. In the present invention, the second motor controls the gear to rotate, the gear drives the full-angle gear rod to rotate, the full-angle gear rod drives the first clamping plate to rotate and move forward, the first clamping plate enables the connecting piece to rotate outside the octagonal base, the first clamping plate and the second clamping plate fix the wind turbine blades, and the blades can be fixed when the wind turbine blades are tested, effectively preventing the blades from shaking in the air, thereby causing errors in the test results, ensuring stability during self-test, not affecting the test efficiency, and the device has strong functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a wind turbine blade damage active self-detection device proposed by the present invention;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the first three-dimensional structure of the self-test mechanism in the present invention;

[0023] Figure 4 It is a schematic diagram of the second three-dimensional structure of the self-test mechanism in the present invention;

[0024] Figure 5 It is a schematic diagram of the first three-dimensional structure of the fixing mechanism in the present invention;

[0025] Figure 6 It is a schematic diagram of a second three-dimensional structure of the fixing mechanism in the present invention;

[0026] Figure 7 for Figure 5 A schematic diagram of the enlarged structure in the middle.

[0027] In the figure: 1. base; 2. wind potential energy converter; 3. wind turbine blade; 4. square groove; 5. T-plate; 6. first motor; 7. turntable; 8. slide rod; 9. elliptical plate; 10. slide groove; 11. bearing; 12. half-angle gear; 13. rack rod; 14. ultrasonic probe; 15. buckle; 16. ultrasonic detector; 17. fixing rod; 18. octagonal base; 19. second motor; 20. gear; 21. full-angle gear rod; 22. first clamping plate; 23. connecting piece; 24. half-angle gear rod; 25. second clamping plate; 26. fixing plate; 27. water pipe; 28. high-pressure nozzle. DETAILED DESCRIPTION

[0028] The following will be combined with the 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] like Figure 1-Figure 7 As shown, an active self-inspection device for wind turbine blade damage proposed by the present invention comprises a base 1, a self-inspection mechanism is arranged inside the upper part of the base 1, the self-inspection mechanism comprises a T-shaped plate 5 arranged inside the upper part of the base 1, a first motor 6 is fixedly connected to the side of the T-shaped plate 5 close to the base 1, a turntable 7 is arranged at the output end of the first motor 6, a slide bar 8 is fixedly connected to the side of the turntable 7 away from the first motor 6, an elliptical plate 9 is arranged on the side of the slide bar 8 close to the turntable 7, the elliptical plate 9 is drivingly connected to a half-angle gear 12, a rack rod 13 is meshingly connected to the side of the half-angle gear 12 away from the elliptical plate 9, an ultrasonic probe 14 is fixedly installed on the side of the rack rod 13 close to the half-angle gear 12, and the operation of the first motor 6 causes the ultrasonic probe 14 to change from a static state to a moving state;

[0031] A fixing rod 17 is fixedly connected to the top of the base 1, and a fixing mechanism is arranged outside the fixing rod 17. The fixing mechanism includes an octagonal base 18 arranged outside the fixing rod 17, and a second motor 19 is fixedly connected below the octagonal base 18. A gear 20 is arranged at the output end of the second motor 19, and a full-angle gear rod 21 is meshed and connected to the side of the gear 20. The full-angle gear rod 21 is rotatably connected to a first clamping plate 22 on a side away from the gear 20. The operation of the fixing mechanism causes the first clamping plate 22 to change from a static state to a mobile rotation state. A second clamping plate 25 is arranged on a side of the octagonal base 18 close to the first clamping plate 22;

[0032] A square groove 4 is provided inside the base 1, a T-shaped plate 5 is fixedly mounted on the inner wall of the square groove 4, a slide groove 10 is provided inside the elliptical plate 9, the slide groove 10 is slidably connected to the slide rod 8, a bearing 11 is rotatably connected to the side of the elliptical plate 9 away from the slide rod 8, and the bearing 11 is fixedly connected to the T-shaped plate 5;

[0033] A wind potential energy converter 2 is fixedly connected to the top of the base 1, a wind turbine blade 3 is arranged on the top of the base 1, and the wind potential energy converter 2 and the wind turbine blade 3 are transmission-connected;

[0034] An ultrasonic detector 16 is installed on one side of the square groove 4 near the T-shaped plate 5;

[0035] The full-angle gear rod 21 is rotatably connected to the octagonal base 18, and the side of the full-angle gear rod 21 close to the gear 20 is meshedly connected with a half-angle gear rod 24, the half-angle gear rod 24 is rotatably connected to the second clamping plate 25, and the second clamping plate 25 is rotatably connected to the octagonal base 18;

[0036] A connecting piece 23 is rotatably connected to a side of the first clamping plate 22 away from the full-angle gear rod 21 , and the connecting piece 23 is rotatably connected to the octagonal base 18 .

[0037] In this embodiment, the self-checking mechanism arranged inside the base 1 is started, a square groove 4 is opened inside the base 1, and a T-shaped plate 5 is fixedly installed on the inner wall of the square groove 4, so that the first motor 6 fixedly connected to the outside of the T-shaped plate 5 starts to run. When the first motor 6 runs, it controls the turntable 7 arranged at its output end to start rotating. A sliding rod 8 is fixedly connected to the side of the turntable 7. When the turntable 7 rotates, the sliding rod 8 is driven to start moving. An elliptical plate 9 is arranged on the side of the sliding rod 8. The sliding rod 8 is slidably connected to the inside of the slide groove 10 opened inside the elliptical plate 9, so that the sliding rod 8 starts to slide inside the slide groove 10 and drives the elliptical plate 9 to start rotating. When the elliptical plate 9 rotates, it will drive the half-angle gear 12 fixedly connected to the other side thereof to start rotating. Since there is a bearing component 11 rotatably connected between the elliptical plate 9 and the half-angle gear 12, and the bearing component 11 is fixedly connected to the outside of the T-shaped plate 5, the elliptical plate 9 and the half-angle gear 12 are rotatably connected around the bearing component 1 1 starts to rotate, and when the half-angle gear 12 rotates, it drives the rack rod 13 meshing with its side to start moving. The side of the rack rod 13 away from the half-angle gear 12 is fixedly connected with an ultrasonic probe 14, so that when the rack rod 13 moves, it drives the ultrasonic probe 14 to start moving. A wind potential energy converter 2 is installed on the top of the base 1. The wind potential energy converter 2 is externally connected to the wind turbine blades 3. The wind force will drive the wind turbine blades 3 to start rotating and convert the wind energy into mechanical energy through the wind potential energy converter 2, so that the ultrasonic probe 14 gradually moves to the outside of one group of wind turbine blades 3, so that the ultrasonic probe 14 and the wind turbine blades 3 are completely fitted. At this time, the ultrasonic detector 16 installed inside the square slot 4 starts to operate, and the ultrasonic detector 16 starts to emit ultrasonic waves through the ultrasonic probe 14 to detect the outside and inside of the wind turbine blades 3, and automatically detect whether the wind turbine blades 3 are damaged;

[0038] When the wind turbine blade 3 is inspected, the fixing mechanism provided inside the base 1 can be started, one end of the fixing rod 17 is fixedly connected to the base 1, and the other end is fixedly connected to the octagonal base 18. The second motor 19 fixedly connected below the octagonal base 18 starts to run, so that when the second motor 19 runs, it starts to control the gear 20 provided at its output end to rotate. When the gear 20 rotates, it drives the full-angle gear rod 21 meshing with its side to start rotating. When the full-angle gear rod 21 rotates, it drives the first clamping plate 22 rotatably connected to the other side to start to rotate slightly and move forward. The first clamping plate 22 and the octagonal base 18 are connected. The seats 18 are rotatably connected by a connecting piece 23, so that the first clamping plate 22 will not deviate when it moves, and a half-angle gear rod 24 is meshed and connected to the other side of the full-angle gear rod 21. When the full-angle gear rod 21 rotates, it drives the half-angle gear rod 24 to start rotating. When the half-angle gear rod 24 rotates, it drives the second clamping plate 25 rotatably connected to the other side thereof to start making the same movement as the first clamping plate 22, so that the top ends of the first clamping plate 22 and the second clamping plate 25 begin to gradually approach each other, and clamp and fix the wind turbine blade 3, so that when the self-inspection mechanism is running, the wind turbine blade 3 will not shake, to prevent the shaking of the wind blade 3 from affecting the detection result.

[0039] Embodiment 2

[0040] like Figure 1-Figure 7 As shown, based on the first embodiment, a buckle 15 is symmetrically connected to one side of the T-shaped plate 5 close to the rack rod 13, and the buckle 15 is slidably connected to the rack rod 13;

[0041] A fixed plate 26 is fixedly connected to the side of the wind potential energy converter 2 away from the base 1, a water pipe 27 is fixedly connected to the side of the fixed plate 26, a high-pressure nozzle 28 is arranged on the side of the fixed plate 26 away from the wind potential energy converter 2, the water pipe 27 and the high-pressure nozzle 28 are fixedly connected, and the fixed plate 26 can control the high-pressure nozzle 28 to perform water spraying operations.

[0042] In this embodiment, a buckle 15 is fixedly connected to the outside of the T-shaped plate 5, and the buckle 15 is symmetrically connected in two groups. The rack rod 13 is arranged inside the two groups of buckles 15. When the rack rod 13 moves, it will slide inside the two groups of buckles 15, so that the movement of the rack rod 13 has high stability. A fixed plate 26 is fixedly connected above the wind potential energy converter 2, and a water pipe 27 is fixedly connected to the outside of the fixed plate 26. The staff can transport water to the inside of the water pipe 27 through the underground water pipe, so that the water pipe 27 transmits the water to the inside of the high-pressure nozzle 28 fixedly connected to the outside of the fixed plate 26. The high-pressure nozzle 28 is provided with multiple groups, so that the multiple groups of high-pressure nozzles 28 spray water at high pressure to clean the wind turbine blades 3 below, effectively remove dust and other dirt on the outside of the wind turbine blades 3, and prevent it from affecting the detection results.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine blade damage active self-detection device, comprising a base (1), characterized in that: A self-checking mechanism is arranged inside the upper part of the base (1), and the self-checking mechanism comprises a T-shaped plate (5) arranged inside the upper part of the base (1); a first motor (6) is fixedly connected to the side of the T-shaped plate (5) close to the base (1); a rotating disk (7) is arranged at the output end of the first motor (6); a sliding rod (8) is fixedly connected to the side of the rotating disk (7) away from the first motor (6); an elliptical plate (9) is arranged on the side of the sliding rod (8) close to the rotating disk (7); the elliptical plate (9) is transmission-connected to a half-angle gear (12); a rack rod (13) is meshingly connected to the side of the half-angle gear (12) away from the elliptical plate (9); an ultrasonic probe (14) is fixedly mounted on the side of the rack rod (13) close to the half-angle gear (12); the operation of the first motor (6) causes the ultrasonic probe (14) to change from a stationary state to a moving state; The top of the base (1) is fixedly connected to a fixing rod (17), the fixing rod (17) is provided with a fixing mechanism outside, the fixing mechanism comprises an octagonal base (18) provided outside the fixing rod (17), a second motor (19) is fixedly connected below the octagonal base (18), a gear (20) is provided at the output end of the second motor (19), a full-angle gear rod (21) is meshedly connected to the side of the gear (20), a first clamping plate (22) is rotatably connected to the side of the full-angle gear rod (21) away from the gear (20), the operation of the fixing mechanism causes the first clamping plate (22) to change from a stationary state to a mobile rotation state, and a second clamping plate (25) is provided on the side of the octagonal base (18) close to the first clamping plate (22).

2. The wind turbine blade damage active self-detection device according to claim 1, characterized in that: The base (1) is provided with a square groove (4) inside, the T-shaped plate (5) is fixedly mounted on the inner wall of the square groove (4), the elliptical plate (9) is provided with a sliding groove (10), the sliding groove (10) is slidably connected to the sliding rod (8), the side of the elliptical plate (9) away from the sliding rod (8) is rotatably connected to a bearing component (11), and the bearing component (11) is fixedly connected to the T-shaped plate (5).

3. The wind turbine blade damage active self-detection device according to claim 1, characterized in that: A wind potential energy converter (2) is fixedly connected to the top of the base (1), a wind turbine blade (3) is arranged on the top of the base (1), and the wind potential energy converter (2) and the wind turbine blade (3) are transmission-connected.

4. The wind turbine blade damage active self-detection device according to claim 1, characterized in that: A buckle (15) is symmetrically connected to one side of the T-shaped plate (5) close to the rack rod (13), and the buckle (15) is slidably connected to the rack rod (13).

5. The wind turbine blade damage active self-detection device according to claim 2, characterized in that: An ultrasonic detector (16) is installed on one side of the square groove (4) close to the T-shaped plate (5).

6. The wind turbine blade damage active self-detection device according to claim 1, characterized in that: The full-angle gear rod (21) is rotatably connected to the octagonal base (18); the side of the full-angle gear rod (21) close to the gear (20) is meshedly connected with a half-angle gear rod (24); the half-angle gear rod (24) is rotatably connected to the second clamping plate (25); and the second clamping plate (25) is rotatably connected to the octagonal base (18).

7. The wind turbine blade damage active self-detection device according to claim 1, characterized in that: A connecting piece (23) is rotatably connected to a side of the first clamping plate (22) away from the full-angle gear rod (21), and the connecting piece (23) is rotatably connected to the octagonal base (18).

8. The wind turbine blade damage active self-detection device according to claim 3, characterized in that: A fixing plate (26) is fixedly connected to a side of the wind potential energy converter (2) away from the base (1); a water pipe (27) is fixedly connected to a side of the fixing plate (26); a high-pressure nozzle (28) is arranged on a side of the fixing plate (26) away from the wind potential energy converter (2); the water pipe (27) and the high-pressure nozzle (28) are fixedly connected; and the fixing plate (26) can control the high-pressure nozzle (28) to perform a water spraying operation.

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