A wind power generation blade surface scratch detection device

Abstract

The utility model discloses a wind power generation blade surface scratch detection device, including can half split's assembly structure and removal detection structure, and assembly structure contains assembly ring and gear ring, and assembly ring side surface still is equipped with drive unit, removal detection structure is connected on assembly structure upper surface through bolt, and it contains screw rod box, and there is reciprocating screw rod in screw rod box, and reciprocating screw rod one end is connected with cam group key, and the lower side bevel gear of cam group is with the interference fit of drive gear upper axle end, and drive gear is engaged transmission with gear ring, and there is transmission seat on reciprocating screw rod body, and the transmission seat is connected with telescopic sleeve pipe, and telescopic sleeve pipe upper end has detection frame, and a plurality of detection instruments are installed on detection frame, and the lower side of telescopic sleeve pipe outer sleeve pipe side surface is connected with piston pipe, and piston pipe piston end is placed into liquid pipe and can reciprocating move, the device drives through assembly structure, can make detection instrument to the blade surface carry out comprehensive reciprocating lift scratch detection, avoided the disadvantage that unmanned plane detection is disturbed by turbulence.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically a device for detecting surface damage to wind turbine blades. Background Technology

[0002] In the global energy transition towards clean energy, wind power has become an important part of the global power system due to its renewable and pollution-free advantages. As the core component for capturing wind energy, the operating status of wind turbine blades directly affects the power generation efficiency and safety stability of the entire unit. Because wind turbine blades are constantly exposed to a complex and ever-changing natural environment, they not only have to withstand the impact of extreme weather such as strong winds, heavy rains, and lightning, but may also suffer various types of damage such as cracks, dents, and scratches due to factors such as dust abrasion, bird strikes, and blade vibration fatigue. If these seemingly minor damages are not detected and repaired in time, they will continue to expand under long-term alternating loads. At best, this will lead to a decrease in the aerodynamic performance of the blades, resulting in a significant reduction in power generation efficiency; at worst, it may cause serious accidents such as blade breakage. This not only requires high maintenance and replacement costs, but may also pose a significant threat to the surrounding environment and personnel safety. Therefore, the development and application of advanced wind turbine blade surface damage detection technology to achieve rapid identification, accurate location, and quantitative assessment of blade damage has become a key link in ensuring the safe and stable operation of wind farms, reducing operation and maintenance costs, and improving power generation efficiency, and has important practical significance and application value.

[0003] However, in the current field of wind turbine blade surface damage detection, most devices still heavily rely on equipment such as drones to complete the inspection work on the blades. However, the high-speed rotation of the blades of a wind turbine in operation will drive the surrounding airflow to form complex and violent turbulence. The airflow speed and direction change rapidly and the stability is extremely poor. This unstable airflow will not only seriously interfere with the normal flight attitude of the drone, making it difficult for the drone to accurately control the distance between itself and the blade, but may even cause the drone to shake violently or lose control. Once the drone collides with the high-speed rotating blade, it will not only damage the drone equipment, but may also cause secondary damage to the blade itself, and will also pose a great threat to the safety of the on-site operators, with high operational risks and safety hazards.

[0004] To address this problem, the present invention provides a device for detecting surface damage to wind turbine blades. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a device for detecting surface damage to wind turbine blades, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine blade surface damage detection device, comprising:

[0007] The assembly structure is a split-in structure that is installed on the wind turbine in a nested manner.

[0008] The mobile detection structure is bolted to the upper surface of the assembly structure and driven by the assembly structure. Under the drive of the assembly structure, it detects the reciprocating lifting and lowering activities of the wind turbine blades.

[0009] The assembly structure includes an assembly ring, and a toothed ring is rotated and constrained inside the assembly ring along the center.

[0010] The moving detection structure includes a lead screw box, inside which an interference fit bearing rotatably constrains a reciprocating lead screw. The end of the reciprocating lead screw near the gear ring is keyed to a cam assembly that is rotatably limited inside the lead screw box. The bevel gear on the lower side of the cam assembly is interference-fitted with the upper shaft end of a drive gear that is rotatably limited on the lower side of the lead screw box. The side of the drive gear meshes with the exposed gear ring. A transmission seat is threaded on the body of the reciprocating lead screw. A telescopic sleeve is bolted to the upper surface of the transmission seat. The upper end of the innermost sleeve of the telescopic sleeve is bolted to a detection frame. A piston tube is integrally connected to the lower side of the outer sleeve of the telescopic sleeve in the vertical direction. The piston end of the piston tube is inserted into the liquid tube and reciprocates along the inside of the liquid tube.

[0011] Preferably, the assembly ring includes two semi-circular ring plates, and the assembly rings and the corresponding toothed rings are connected by screws after the groove planes on the upper and lower surfaces of the end engagement positions are fitted with connecting parts.

[0012] Preferably, a drive unit is installed on the side of the assembly ring corresponding to the exposed toothed ring, and the drive unit has a gear combination for driving the toothed ring.

[0013] Preferably, the lead screw box is bolted to the upper surface of the assembly ring and is located on the opposite side of the drive unit.

[0014] Preferably, the testing frame has multiple testing instruments for testing wind turbine blades.

[0015] Preferably, the liquid pipe is bolted to the surface of the integral vertical plate at the end of the screw box.

[0016] Preferably, initially, the piston tube is connected to the innermost sleeve of the telescopic sleeve. Beneficial effects

[0017] This invention provides a device for detecting surface damage to wind turbine blades. Compared with existing technologies, it has the following advantages:

[0018] (1) The wind turbine blade surface damage detection device is designed with an assembly structure that can be split in half into two semi-circular assembly rings and corresponding semi-circular toothed rings. It is connected as a whole with connectors and screws, which can be conveniently installed on the wind turbine in a sleeve manner without complicated installation process. It adapts to the installation requirements of wind turbines of different specifications, greatly improving the installation flexibility and applicability of the device. At the same time, the drive unit drives the toothed ring to rotate, and drives the drive gear, cam group, reciprocating screw and other subsequent structures to operate through gear meshing transmission, realizing the movement of the detection instrument. It does not rely on external unstable mobile equipment such as drones, avoids the interference of turbulence generated by blade rotation on the detection equipment, reduces the operation risk, and ensures the stability and safety of the detection process.

[0019] (2) The wind turbine blade surface damage detection device, through the cooperation of the reciprocating screw and the transmission seat, enables the transmission seat to drive the telescopic sleeve to reciprocate. At the same time, the liquid pressure generated by the reciprocating movement of the piston tube in the liquid tube controls the extension and retraction of the telescopic sleeve, so that multiple detection instruments on the detection frame can achieve reciprocating up and down movement from near to far and from low to high on the front side of the blade. This dual motion cooperation method can carry out comprehensive damage detection on the front surface of the wind turbine blade, effectively improving the comprehensiveness and accuracy of the detection, and can promptly detect various damages on the blade surface, providing a reliable basis for the maintenance and repair of the blade. Attached Figure Description

[0020] Figure 1 This utility model is a three-dimensional structural perspective view;

[0021] Figure 2 This is an exploded view of the overall structure of this utility model;

[0022] Figure 3 This is an overall cross-sectional view of the present invention;

[0023] Figure 4 This is the utility model Figure 3 Enlarged view of point A in the middle.

[0024] In the diagram: 1. Assembly structure; 11. Assembly ring; 111. Connector; 12. Gear ring; 13. Drive unit; 2. Moving detection structure; 21. Screw box; 22. Reciprocating screw; 221. Transmission seat; 23. Telescopic sleeve; 231. Piston tube; 232. Liquid tube; 24. Detection frame; 25. Cam assembly; 26. Drive gear. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-4 A device for detecting surface damage to wind turbine blades, comprising:

[0027] Assembly structure 1 is a split-in structure that is installed on the wind turbine in a sleeve-like manner.

[0028] The movable detection structure 2 is bolted to the upper surface of the assembly structure 1 and driven by the assembly structure 1. Under the drive of the assembly structure 1, it detects the reciprocating lifting and lowering activities of the wind turbine blades.

[0029] The assembly structure 1 includes an assembly ring 11, which includes two semi-circular ring plates. Each ring plate has a semi-circular groove recessed in the middle of its convex surface along the path to both ends. The groove contains a semi-circular toothed ring 12 that is also rotated around the center. The assembly rings 11 and the toothed rings 12 are connected by screws after fitting the groove planes recessed at the end engagement positions of the grooves 111. A drive unit 13 is installed on the side of the assembly ring 11 corresponding to the exposed toothed ring 12. The drive unit 13 has a gear combination that drives the toothed ring 12.

[0030] The moving detection structure 2 includes a screw box 21, which is bolted to the upper surface of the assembly ring 11 and located on the opposite side of the drive unit 13. An interference-fit bearing inside the screw box 21 rotatably constrains a reciprocating screw 22. The end of the reciprocating screw 22 near the gear ring 12 is keyed to a cam assembly 25, which is rotatably confined inside the screw box 21. The cam assembly 25 consists of two meshing bevel gears. The lower bevel gear is interference-fitted to the upper shaft end of a drive gear 26, which is rotatably confined to the lower side of the screw box 21. The side of the drive gear 26 meshes with the exposed gear ring 12. A transmission seat 221 is threaded onto the rod of the reciprocating screw 22, and the transmission seat 221 is located on the surface of the screw box 21. The transmission seat 221 moves back and forth under the constraint of the sliding groove. The upper surface of the transmission seat 221 is connected with a telescopic sleeve 23 with telescopic capability by bolts. The upper end of the innermost sleeve of the telescopic sleeve 23 is connected with a detection frame 24 by bolts. The detection frame 24 is equipped with multiple detection instruments for detecting wind turbine blades, such as infrared thermal imaging detection and visual inspection. The lower side of the outer sleeve of the telescopic sleeve 23 is integrally connected with the piston tube 231 in the vertical direction. The piston end of the piston tube 231 is inserted into the liquid tube 232 and moves back and forth along the inside of the liquid tube 232. The liquid tube 232 is connected to the vertical plate surface of the end of the screw box 21 by bolts. Initially, the piston tube 231 is connected to the innermost sleeve of the telescopic sleeve 23.

[0031] During operation, the semi-circular assembly ring 11 and toothed ring 12 of the assembly structure 1 are first assembled into a complete ring and placed on the wind turbine. The drive unit 13 is started, and the cam group 25 is rotated through gear transmission, which drives the reciprocating screw 22 to rotate, which drives the transmission seat 221 to reciprocate, thereby moving the telescopic sleeve 23. At the same time, when the telescopic sleeve 23 moves, the piston tube 231 controls its extension and retraction through liquid pressure. Finally, the detection instrument on the detection frame 24 is positioned on the front side of the blade, and through the reciprocating motion of the transmission seat 221 and the extension and retraction of the sleeve, it performs reciprocating up-and-down collision detection on the blade surface from near to far and from low to high.

[0032] In summary, by designing the assembly structure 1 as a combination of two semi-circular assembly rings 11 and corresponding semi-circular toothed rings 12 that can be split in half, and achieving an integrated connection with the connector 111 and screws, it can be conveniently installed on wind turbines in a sleeve manner without a complicated installation process. This adapts to the installation requirements of wind turbines of different specifications, greatly improving the installation flexibility and applicability of the device. At the same time, the drive unit 13 drives the toothed ring 12 to rotate, and through gear meshing, drives the drive gear 26, cam group 25, reciprocating screw 22, and other subsequent structures to move, realizing the movement of the testing instrument. This eliminates the need to rely on external unstable mobile devices such as drones, avoiding the impact of turbulence generated by blade rotation on the testing instrument. Interference with the testing equipment is reduced, operational risks are minimized, and the stability and safety of the testing process are ensured. By setting up the cooperation between the reciprocating screw 22 and the transmission seat 221, the transmission seat 221 can drive the telescopic sleeve 23 to reciprocate. At the same time, the liquid pressure generated by the reciprocating movement of the piston tube 231 in the liquid tube 232 controls the extension and retraction of the telescopic sleeve 23, allowing multiple testing instruments on the testing frame 24 to achieve reciprocating up and down movement from near to far and from low to high on the front side of the blade. This dual-motion coordination method can perform comprehensive damage detection on the front surface of the wind turbine blade, effectively improving the comprehensiveness and accuracy of the detection, and can promptly detect various damages on the blade surface, providing a reliable basis for blade maintenance and repair.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0034] Working principle: During operation, the two semi-circular assembly rings 11 and the corresponding semi-circular toothed rings 12 of assembly structure 1 are first assembled into a complete ring using connectors 111 and screws. This ring is then installed on the wind turbine in a sleeve-like manner. The drive unit 13 is started, and it drives the toothed ring 12 to rotate around the center within the assembly ring 11 via a gear combination. The drive gear 26, meshing with the toothed ring 12, rotates accordingly, driving the lower bevel gear in the cam assembly 25, which is interference-fitted at the upper shaft end, to rotate. This, in turn, causes the cam assembly 25 to rotate as a whole through bevel gear meshing, driving the reciprocating screw 22 to rotate within the screw box 21. When rod 22 rotates, transmission seat 221 reciprocates along the rod under the constraint of the sliding groove on the surface of screw box 21, driving telescopic sleeve 23 to move synchronously. At the same time, when telescopic sleeve 23 moves, the piston end of piston tube 231 reciprocates in liquid tube 232. The telescopic sleeve 23 is extended and retracted by liquid pressure, so that multiple detection instruments (such as infrared thermal imaging, visual inspection equipment, etc.) on detection frame 24, under the action of reciprocating motion of transmission seat 221 and extension and retraction of telescopic sleeve 23, perform comprehensive reciprocating up and down collision detection on the front side of wind turbine blade surface from near to far and from low to high.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting surface damage to wind turbine blades, characterized in that, include: The assembly structure (1) is a split-in structure that is installed on the wind turbine in a sleeved form. The moving detection structure (2) is bolted to the upper surface of the assembly structure (1) and driven by the assembly structure (1), and performs reciprocating lifting and lowering activity detection of the wind turbine blade under the drive of the assembly structure (1). The assembly structure (1) includes an assembly ring (11), and a toothed ring (12) is rotated around the center inside the assembly ring (11). The moving detection structure (2) includes a screw box (21), inside which an interference fit bearing rotatably constrains a reciprocating screw (22). The end of the reciprocating screw (22) near the gear ring (12) is keyed to a cam assembly (25) rotatably constrained inside the screw box (21). The bevel gear on the lower side of the cam assembly (25) is interference fitted with the upper shaft end of a drive gear (26) rotatably constrained on the lower side of the screw box (21). The side of the drive gear (26) meshes with the exposed gear ring (12). The reciprocating screw (22) is provided with a transmission seat (221) on its rod body. The upper surface of the transmission seat (221) is connected to a telescopic sleeve (23) by bolts. The upper end of the innermost sleeve of the telescopic sleeve (23) is connected to a detection frame (24) by bolts. The lower side of the outer sleeve of the telescopic sleeve (23) is integrally connected to a piston tube (231) in the vertical direction. The piston end of the piston tube (231) is placed inside the liquid tube (232) and moves back and forth along the inside of the liquid tube (232).

2. The wind turbine blade surface damage detection device according to claim 1, characterized in that: The assembly ring (11) includes two semi-circular ring plates, and the assembly rings (11) and the corresponding toothed rings (12) are connected by screws after fitting the groove plane fitting connector (111) with the upper and lower surfaces of the end joint position.

3. The wind turbine blade surface damage detection device according to claim 1, characterized in that: The side of the assembly ring (11) is provided with a drive unit (13) corresponding to the exposed toothed ring (12), and the drive unit (13) has a gear combination for driving the toothed ring (12).

4. The wind turbine blade surface damage detection device according to claim 1, characterized in that: The screw box (21) is bolted to the upper surface of the assembly ring (11) and is located on the opposite side of the drive unit (13).

5. The wind turbine blade surface damage detection device according to claim 1, characterized in that: The testing frame (24) is equipped with multiple testing instruments for testing wind turbine blades.

6. The wind turbine blade surface damage detection device according to claim 1, characterized in that: The liquid pipe (232) is bolted to the surface of the vertical plate integrally formed at the end of the screw box (21).

7. The wind turbine blade surface damage detection device according to claim 1, characterized in that: Initially, the piston tube (231) is connected to the innermost sleeve of the telescopic sleeve (23).

Images