Wind turbine generator blade surface defect detection device

Abstract

The utility model discloses a wind turbine generator blade surface defect detection device comprising a wind turbine generator which comprises a wind power tower drum and a cabin; the detection device comprises a pulley block, a steel wire rope, a sliding positioning ring, a supporting frame and a camera; the positioning assembly comprises a supporting plate, a first positioning groove, a second positioning groove, a positioning plate and an elastic rubber block, one end of the supporting plate is fixed to the outer side of the lower end of the wind power tower, the first positioning groove and the second positioning groove are formed in the other end, away from the wind power tower, of the supporting plate, and the positioning plate is inserted into the first positioning groove and the second positioning groove; the elastic rubber block is fixed on the top of the positioning plate. The problems that before detection of a detection device, one blade needs to be rotated to be perpendicular to the ground, after a motor rotates, due to the inertia effect, the blade still continues to rotate by a certain distance, the blade cannot be completely in the perpendicular state, and then follow-up detection is affected are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine blade testing devices, and in particular to a wind turbine blade surface defect testing device. Background Technology

[0002] A wind turbine blade surface defect detection device is a device used to identify and assess potential defects on the surface of wind turbine blades. It mainly consists of visual inspection equipment, a pressure testing module, an ultrasonic flaw detector, and an infrared thermal imager, and can detect raised defects, dented defects, and broken defects on the blade surface.

[0003] A search revealed a Chinese patent, CN219412806 U, for a surface defect detection device for wind turbine blade maintenance. The device includes a wind turbine tower, a nacelle at the top of the tower with its axis perpendicular to the tower's axis, several turbine blades rotatably mounted at one end of the nacelle, a sliding positioning ring slidably fitted onto the tower, a base positioned near the blades with a through hole in the center, a pulley system at the other end of the nacelle, and the tower located between the blades and the pulley system. A rope, one end of which is attached to the sliding positioning ring and wound around the pulleys of the pulley system, is positioned at the bottom of the tower. Several camera devices are mounted on the base and positioned around the through hole. This technical solution solves the problem of the dangerous and laborious nature of manual inspection of wind turbine blade surface defects in existing technologies.

[0004] Before testing, the detection device needs to rotate one of the blades to a perpendicular position to the ground. However, after the motor rotates, the blade will continue to rotate a certain distance due to inertia, making it impossible for the blade to be completely perpendicular, which will affect the subsequent testing. Therefore, a wind turbine blade surface defect detection device is needed to solve the above problem. Utility Model Content

[0005] The purpose of this invention is to provide a wind turbine blade surface defect detection device to solve the problem mentioned in the background art, where the detection device needs to rotate one of the blades to a perpendicular position to the ground before detection. However, after the motor rotates, the blade will continue to rotate a certain distance due to inertia, making it impossible for the blade to be completely perpendicular, thus affecting the subsequent detection.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a device for detecting surface defects in wind turbine blades, comprising:

[0008] A wind turbine, comprising a wind turbine tower and a nacelle, wherein the nacelle is fixed to the top of the wind turbine tower;

[0009] The detection device includes a pulley block, a steel wire rope, a sliding positioning ring, a support frame, and a camera. Two sets of pulleys in the pulley block are fixed to the side of the nacelle by a support frame, and the other set of pulleys is fixed to the side of the sliding positioning ring. The steel wire rope is wound around the pulley block. The sliding positioning ring is fitted onto the outer ring of the wind turbine tower. The support frame is fixed on the side of the sliding positioning ring away from the pulley block. The camera is fixed on the support frame and is evenly distributed.

[0010] The positioning component includes a support plate, a first positioning groove, a second positioning groove, a positioning plate, and an elastic rubber block. One end of the support plate is fixed to the outer side of the lower end of the wind turbine tower. The first and second positioning grooves are opened at the other end of the support plate away from the wind turbine tower. The positioning plate is inserted into the first and second positioning grooves respectively, and the elastic rubber block is fixed to the top of the positioning plate.

[0011] Furthermore, the positioning assembly also includes a mounting plate and a gripping rod. The mounting plate is welded to one end of the support plate and fixed to the outside of the wind turbine tower by bolts, and the gripping rod is welded to the lower end of the positioning plate.

[0012] Furthermore, the wind turbine also includes wind turbine blades, which are rotatably connected to the other end of the nacelle away from the pulley block.

[0013] Furthermore, the detection device also includes a first roller, which is rotatably connected to the inner side of the sliding positioning ring and fits against the outer wall of the wind turbine tower.

[0014] Furthermore, it also includes a damage prevention component, which includes a telescopic rod and an arc-shaped support block. One end of the telescopic rod is fixed to the inside of the support frame, and the arc-shaped support block is fixed to the movable end of the telescopic rod.

[0015] Furthermore, the damage prevention component also includes a fixing frame and a second roller. The fixing frame is fixed to the inner side of the arc-shaped support block, and the second roller is rotatably connected to the inner side of the fixing frame and is in contact with the wind turbine blade.

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

[0017] I. This utility model, through the positioning component, fixes the support plate to the side of the wind turbine tower facing the wind turbine blade at the lower end via the mounting plate. Holding a handle, the positioning plate is inserted into the first positioning groove and moved upward, causing the elastic rubber block on the positioning plate to extend into the lower side of the wind turbine blade, causing the wind turbine blade to rotate. When it approaches the elastic rubber block, it stops. Due to inertia, the wind turbine blade slowly approaches the elastic rubber block, causing the elastic rubber block to bend. At this time, the positioning plate in the second positioning groove is moved upward, moving the upper elastic rubber block to the other side of the lower end of the wind turbine blade, preventing the wind turbine blade from rebounding. When the wind turbine blade comes to rest, the lower end of the wind turbine blade is located between the two elastic rubber blocks, and at this time, the wind turbine blade is in a vertical state. This setting ensures that the wind turbine blade is perpendicular to the ground and does not affect the use of the detection device.

[0018] II. In this utility model, through the set anti-damage components, during the inspection, the sliding positioning ring drives the support frame to move upward, which in turn drives the telescopic rod to move upward. The second roller on the inner side of the arc-shaped support block moves in contact with the wind turbine blade. As the arc-shaped support block moves upward continuously, the telescopic rod is compressed, and at the same time, the wind turbine blade is located in the middle of the arc-shaped support block. This setting can prevent the support frame from deviating and damaging the wind turbine blade and the camera when the sliding positioning ring rotates due to the influence of the external environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 For the present utility model Figure 1 Enlarged view at point B in the middle;

[0023] Figure 4 This is a schematic diagram of the anti-collision component structure of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 10. Wind turbine tower; 11. Nacelle; 12. Wind turbine blade; 20. Pulley block; 21. Wire rope; 22. Sliding positioning ring; 23. First roller; 24. Support frame; 25. Camera; 30. Mounting plate; 31. Support plate; 32. First positioning groove; 33. Second positioning groove; 34. Positioning plate; 35. Handle; 36. Elastic rubber block; 40. Telescopic rod; 41. Arc-shaped support block; 42. Fixing frame; 43. Second roller. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Please see Figure 1-3 As shown, this embodiment is a device for detecting surface defects in wind turbine blades, comprising:

[0030] The wind turbine includes a wind turbine tower 10 and a nacelle 11, with the nacelle 11 fixed to the top of the wind turbine tower 10.

[0031] The wind turbine also includes wind turbine blades 12, which are rotatably connected to the other end of the nacelle 11 away from the pulley block 20;

[0032] The wind turbine tower 10 provides support, the nacelle 11 protects and houses the key equipment and electrical components of the wind turbine, and the wind turbine blades 12 capture wind energy and convert it into mechanical energy.

[0033] The detection device includes a pulley block 20, a steel wire rope 21, a sliding positioning ring 22, a support frame 24, and a camera 25. Two sets of pulleys in the pulley block 20 are fixed to the side of the nacelle 11 by the support frame, and the other set of pulleys is fixed to the side of the sliding positioning ring 22. The steel wire rope 21 is wound around the pulley block 20. The sliding positioning ring 22 is fitted onto the outer ring of the wind turbine tower 10. The support frame 24 is fixed on the side of the sliding positioning ring 22 away from the pulley block 20. The camera 25 is fixed on the support frame 24 and is evenly distributed.

[0034] The detection device also includes a first roller 23, which is rotatably connected to the inner side of the sliding positioning ring 22 and fits against the outer wall of the wind turbine tower 10.

[0035] The pulley block 20, together with the wire rope 21, is used to raise and lower the sliding positioning ring 22. The sliding positioning ring 22 serves as a support and limiter. The first roller 23 can reduce the frictional resistance of the sliding positioning ring 22 when it is raised and lowered. The support frame 24 provides support. The camera 25 is used to capture images of the surface of the wind turbine blade 12.

[0036] The positioning assembly includes a support plate 31, a first positioning groove 32, a second positioning groove 33, a positioning plate 34, and an elastic rubber block 36. One end of the support plate 31 is fixed to the outer side of the lower end of the wind turbine tower 10. The first positioning groove 32 and the second positioning groove 33 are opened at the other end of the support plate 31 away from the wind turbine tower 10. The positioning plate 34 is respectively inserted into the first positioning groove 32 and the second positioning groove 33. The elastic rubber block 36 is fixed to the top of the positioning plate 34.

[0037] The positioning assembly also includes a mounting plate 30 and a gripping rod 35. The mounting plate 30 is welded to one end of the support plate 31 and fixed to the outside of the wind turbine tower 10 by bolts. The gripping rod 35 is welded to the lower end of the positioning plate 34.

[0038] Mounting plate 30 serves a fixing function, support plate 31 serves a supporting function, first positioning groove 32 and second positioning groove 33 serve a positioning function, positioning plate 34 serves a positioning function, grip rod 35 facilitates holding positioning plate 34, elastic rubber block 36 serves a limiting function and at the same time avoids damage to wind turbine blade 12.

[0039] Working principle:

[0040] The support plate 31 is fixed to the side of the lower end of the wind turbine tower 10 facing the wind turbine blade 12 via the mounting plate 30. Holding a handle 35, the positioning plate 34 is inserted into the first positioning groove 32 and moved upward, so that the elastic rubber block 36 on the positioning plate 34 extends into the lower side of the wind turbine blade 12, causing the wind turbine blade 12 to rotate. When it approaches the elastic rubber block 36, it stops. Due to inertia, the wind turbine blade 12 slowly approaches the elastic rubber block 36 and causes the elastic rubber block 36 to bend. At this time, the positioning plate 34 in the second positioning groove 33 is moved upward, so that the upper elastic rubber block 36 moves to the other side of the lower end of the wind turbine blade 12 to prevent the wind turbine blade 12 from rebounding. When the wind turbine blade 12 is stationary, the lower end of the wind turbine blade 12 is located between the two elastic rubber blocks 36. At this time, the wind turbine blade 12 is in a vertical state.

[0041] This step ensures that the wind turbine blade 12 is perpendicular to the ground and does not affect the use of the testing device.

[0042] Please see Figure 4 This embodiment, based on the above embodiments, further includes:

[0043] The damage prevention component includes a telescopic rod 40 and an arc-shaped support block 41. One end of the telescopic rod 40 is fixed to the inside of the support frame 24, and the arc-shaped support block 41 is fixed to the movable end of the telescopic rod 40.

[0044] The damage prevention component also includes a fixing frame 42 and a second roller 43. The fixing frame 42 is fixed to the inner side of the arc-shaped support block 41, and the second roller 43 is rotatably connected to the inner side of the fixing frame 42 and is in contact with the wind turbine blade 12.

[0045] The telescopic rod 40 can change position, the arc-shaped support block 41 and the fixed frame 42 provide support, and the second roller 43 reduces the frictional resistance when the arc-shaped support block 41 moves.

[0046] Working principle:

[0047] During testing, the sliding positioning ring 22 drives the support frame 24 to move upward, which in turn drives the telescopic rod 40 to move upward. The second roller 43 on the inner side of the arc-shaped support block 41 moves in contact with the wind turbine blade 12. As the arc-shaped support block 41 moves upward, the telescopic rod 40 is compressed, which in turn makes the wind turbine blade 12 located in the middle of the arc-shaped support block 41.

[0048] This step prevents the support frame 24 from deviating and damaging the wind turbine blade 12 and camera 25 when the sliding positioning ring 22 rotates due to external environmental influences.

[0049] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for detecting surface defects in wind turbine blades, characterized in that, include: A wind turbine, the wind turbine including a wind turbine tower (10) and a nacelle (11), the nacelle (11) being fixed to the top of the wind turbine tower (10); The detection device includes a pulley block (20), a steel wire rope (21), a sliding positioning ring (22), a support frame (24), and a camera (25). Two pulleys of the pulley block (20) are fixed to the side of the nacelle (11) by a support frame, and the other pulley is fixed to the side of the sliding positioning ring (22). The steel wire rope (21) is wound around the pulley block (20). The sliding positioning ring (22) is fitted onto the outer ring of the wind turbine tower (10). The support frame (24) is fixed on the side of the sliding positioning ring (22) away from the pulley block (20). The camera (25) is fixed on the support frame (24) and is evenly distributed. The positioning component includes a support plate (31), a first positioning groove (32), a second positioning groove (33), a positioning plate (34), and an elastic rubber block (36). One end of the support plate (31) is fixed to the outer side of the lower end of the wind turbine tower (10). The first positioning groove (32) and the second positioning groove (33) are opened at the other end of the support plate (31) away from the wind turbine tower (10). The positioning plate (34) is inserted into the first positioning groove (32) and the second positioning groove (33) respectively. The elastic rubber block (36) is fixed to the top of the positioning plate (34).

2. The wind turbine blade surface defect detection device according to claim 1, characterized in that, The positioning assembly also includes a mounting plate (30) and a gripping rod (35). The mounting plate (30) is welded to one end of the support plate (31) and fixed to the outside of the wind turbine tower (10) by bolts. The gripping rod (35) is welded to the lower end of the positioning plate (34).

3. The wind turbine blade surface defect detection device according to claim 1, characterized in that, The wind turbine also includes wind turbine blades (12), which are rotatably connected to the other end of the nacelle (11) away from the pulley block (20).

4. The wind turbine blade surface defect detection device according to claim 1, characterized in that, The detection device also includes a first roller (23), which is tumblingly connected to the inner side of the sliding positioning ring (22) and fits against the outer wall of the wind turbine tower (10).

5. The wind turbine blade surface defect detection device according to claim 1, characterized in that, It also includes a damage prevention component, which includes a telescopic rod (40) and an arc-shaped support block (41). One end of the telescopic rod (40) is fixed to the inside of the support frame (24), and the arc-shaped support block (41) is fixed to the movable end of the telescopic rod (40).

6. The wind turbine blade surface defect detection device according to claim 5, characterized in that, The damage prevention component also includes a fixing frame (42) and a second roller (43). The fixing frame (42) is fixed inside the arc-shaped support block (41), and the second roller (43) is rotatably connected to the inside of the fixing frame (42) and is in contact with the wind turbine blade (12).

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