Wind power blade static load detection device
By designing a static load detection device for wind power blades, using components such as the blade root ring, reducer motor and hydraulic system, the problem of inaccurate static load detection of wind power blades in the existing technology is solved, and accurate measurement of anti-bending and torsional loads is achieved, and detection accuracy and safety are improved.
Patent Information
- Application Number
- CN202422087590.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the prior art, the static load detection of wind power blades is not accurate enough, it is inconvenient to operate, and has safety hazards, making it difficult to accurately measure bending and torsional loads.
A static load detection device for wind power blades is designed, including placement devices and detection devices, and the blade root ring, reducer motor, hydraulic system and strain gauge are used to realize flexible swing and torsion detection of the blades.
The device can be convenient to operate and accurately measure the bending and torsional load of wind power blades, improve detection accuracy and reduce safety hazards.
Smart Images
Figure CN222910181U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of wind turbine blade load detection equipment, and particularly relates to a static load detection device for wind turbine blades. Background Art
[0002] Wind turbine blades are important components of wind power generation, and they are at the forefront of wind power generation equipment. The shape of wind turbine blades is complex, and the working environment is severe; the blades are subjected to various complex loads such as high-speed rotation and complex air flow disturbance during operation. Therefore, it is particularly necessary to detect the anti-load performance of wind turbine blades. In the prior art, the strain generated when suffering stress is usually used to calculate the static load and the static load limit. In the prior art, most of them use gantry cranes to measure with slings and hooks. However, due to inconvenient operation and errors, the measured static load is inaccurate, which will cause certain safety hazards. Therefore, it is necessary to develop an auxiliary tool that can measure the wind resistance bending load and torsional load to meet the needs. Content of the Utility Model
[0003] Aiming at the above technical problems, the utility model provides a static load detection device for wind turbine blades, which is convenient to operate and can accurately measure the bending load and torsional load.
[0004] To solve the above technical problems, the technical scheme adopted by the utility model is: a static load detection device for wind turbine blades, including a placement device and a detection device. The placement device includes a vehicle plate, the bottom of the vehicle plate is rotatably connected with wheels, the upper side of the vehicle plate is connected with a first lifting bracket, the lifting terminal of the first lifting bracket is fixedly connected with a blade root ring, a fixed flange is rotatably connected inside the blade root ring, a first fixing plate is connected to the rear side of the blade root ring, a reduction motor is fixedly connected to the first fixing plate, a second fixing plate is fixedly connected inside the fixed flange, the rotating terminal of the reduction motor is fixedly connected with the second fixing plate, bolt holes are formed on the fixed flange, a second lifting bracket is further connected to the upper side of the vehicle plate, a fixed blade tip ring is fixedly connected to the lifting terminal of the second lifting bracket, a rotating blade tip ring is hinged to the fixed blade tip ring, a first profiling frame is fixedly connected to the fixed blade tip ring, a second profiling frame is fixedly connected to the rotating blade tip ring, a first hydraulic system is connected to the bottom of the blade root ring, a second hydraulic system is connected to the bottom of the fixed blade tip ring, and the detection device includes a detector, and the detector is connected with a strain gauge through a signal line.
[0005] Further, the rotating blade tip ring is hinged to the fixed blade tip ring through a hinge, and a lock is fixedly connected to the other side of the fixed blade tip ring.
[0006] Further, a storage battery is connected to the bottom of the vehicle plate.
[0007] Further, the wheel includes a driving wheel, a driven wheel and a steering wheel. The driving wheel is controlled by a moving motor, and the steering wheel is an electronically controlled omnidirectional wheel.
[0008] The utility model has the following advantages compared with the prior art:
[0009] The utility model is provided with a blade root ring. The wind power blade is fixed by using the fixing flange and bolts on the blade root ring. The rotation of the blade is controlled by a reduction motor 3, so that when testing the blade, it is convenient to rotate the direction of the blade, and the shape of the blade during operation can also be simulated, and the detection effect is more accurate. A first hydraulic system is provided, which can lift the blade root ring for easy operation. A first lifting bracket is provided, which can play a supporting role during lifting. A fixed blade tip ring and a rotating blade tip ring are provided, which can control the position of the blade tip, and then twist can be achieved by rotating the fixing flange, so that the torsional load can be measured and calculated. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic structural diagram of the utility model.
[0011] Figure 2 It is a schematic front structural diagram of the blade root ring of the utility model.
[0012] Figure 3 It is a schematic back structural diagram of the blade root ring of the utility model.
[0013] Figure 4 It is a schematic structural diagram of the fixed blade tip ring of the utility model.
[0014] Figure 5 It is a schematic structural diagram of the detection device of the utility model.
[0015] Figure 6 It is a schematic structural diagram of the bottom of the vehicle board of the utility model.
[0016] Wherein: 1. Vehicle board, 2. Blade root ring, 3. Reduction motor, 4. First lifting bracket, 5. Driving wheel, 6. Driven wheel, 7. Steering wheel, 8. Second lifting bracket, 9. Fixed blade tip ring, 10. Rotating blade tip ring, 11. Fixing flange, 12. Bolt hole, 13. Second fixing plate, 14. First hydraulic system, 15. First fixing plate, 16. Locking device, 17. Second conforming frame, 18. Hinge, 19. First conforming frame, 20. Second hydraulic system, 21. Detector, 22. Signal wire, 23. Strain gauge, 24. Moving motor, 25. Battery. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following will further describe the utility model with reference to the drawings.
[0018] As Figures 1-6A static load detection device for a wind turbine blade is shown, including a placement device and a detection device. The placement device includes a vehicle board 1, the bottom of the vehicle board 1 is rotatably connected with wheels, the upper side of the vehicle board 1 is connected with a first lifting bracket 4, the lifting terminal of the first lifting bracket 4 is fixedly connected with a blade root ring 2, a fixed flange 11 is rotatably connected inside the blade root ring 2, the rear side of the blade root ring 2 is connected with a first fixing plate 15, a reduction motor 3 is fixedly connected on the first fixing plate 15, a second fixing plate 13 is fixedly connected inside the fixed flange 11, the rotating terminal of the reduction motor 3 is fixedly connected with the second fixing plate 13, bolt holes 12 are opened on the fixed flange 11, the upper side of the vehicle board 1 is also connected with a second lifting bracket 8, the lifting terminal of the second lifting bracket 8 is fixedly connected with a fixed blade tip ring 9, a rotating blade tip ring 10 is hinged on the fixed blade tip ring 9, a first conforming frame 19 is fixedly connected on the fixed blade tip ring 9, a second conforming frame 17 is fixedly connected on the rotating blade tip ring 10, the bottom of the blade root ring 2 is connected with a first hydraulic system 14, and the bottom of the fixed blade tip ring 9 is connected with a second hydraulic system 20. The detection device includes a detector 21, and the detector 21 is connected with a strain gauge 23 through a signal line 22.
[0019] To fix the rotating blade tip ring 10, the rotating blade tip ring 10 is hinged with the fixed blade tip ring 9 through a hinge 18, and a lock 16 is fixedly connected to the other side of the fixed blade tip ring 9.
[0020] To facilitate power supply, a storage battery 25 is connected to the bottom of the vehicle board 1.
[0021] To facilitate movement, the wheels include a driving wheel 5, a driven wheel 6 and a steering wheel 7. The driving wheel 5 is controlled by a moving motor 24, and the steering wheel 7 is an electronically controlled omnidirectional wheel.
[0022] The specific working process of the present utility model is as follows:
[0023] Through the driving wheel 5 and the auxiliary wheel 6, the vehicle board 1 is transported to a suitable place, the steering wheel 7 controls the direction, and the storage battery 25 provides power for the moving motor 24.
[0024] During installation, use a lifting tool to lift the blade, insert the bolts at the blade root into the bolt holes 12 of the fixed flange 11, fix them with nuts, place the strain gauge 22 at the position of the blade to be detected, then control the blade root ring 2 to rise through the first hydraulic system 14, lift the blade to a certain height, then hang heavy objects on the blade through a sling, detect through the strain gauge 22 and the readings of the detector 21, and calculate the stress and static load of the blade; the first lifting bracket 4 plays a stabilizing role.
[0025] Among them: During detection, mainly detect in two directions: the windward side upward and the trailing edge upward. The reduction motor rotates the fixed flange 11 through the second fixing plate 13.
[0026] When performing torsion detection, adjust the blade attitude, use the second hydraulic system 20 to lift the fixed tip ring 9 so that the first profiling frame 19 is pressed against the leeward side of the blade. Then, fasten the rotating tip ring 10, control the second profiling frame 17 against the windward side of the blade, lock it with the lock 16, and then use the reduction motor 3 to twist the fixed flange 11 to detect its torsional stress, thereby calculating the torsional load.
Claims
1. A static load detection device for wind turbine blades, characterized in that: The invention comprises a placing device and a detecting device, wherein the placing device comprises a vehicle plate (1), the bottom of the vehicle plate (1) is rotatably connected to a wheel, the upper side of the vehicle plate (1) is connected to a first lifting bracket (4), the lifting terminal of the first lifting bracket (4) is fixedly connected to a blade root ring (2), the blade root ring (2) is rotatably connected to a fixing flange (11), the rear side of the blade root ring (2) is connected to a first fixing plate (15), the first fixing plate (15) is fixedly connected to a reduction motor (3), the fixing flange (11) is fixedly connected to a second fixing plate (13), the rotating terminal of the reduction motor (3) is fixedly connected to the second fixing plate (13), and the fixing flange (11) is provided with a The vehicle plate (1) has a bolt hole (12); a second lifting bracket (8) is also connected to the upper side of the vehicle plate (1); a fixed blade tip ring (9) is fixedly connected to the lifting terminal of the second lifting bracket (8); a rotating blade tip ring (10) is hingedly connected to the fixed blade tip ring (9); a first follower frame (19) is fixedly connected to the fixed blade tip ring (9); a second follower frame (17) is fixedly connected to the rotating blade tip ring (10); a first hydraulic system (14) is connected to the bottom of the blade root ring (2); a second hydraulic system (20) is connected to the bottom of the fixed blade tip ring (9); and the detection device comprises a detector (21); and the detector (21) is connected to a strain gauge (23) via a signal line (22).
2. The static load detection device for wind turbine blades according to claim 1, characterized in that: The rotating blade tip ring (10) is hingedly connected to the fixed blade tip ring (9) via a hinge (18), and a locker (16) is fixedly connected to the other side of the fixed blade tip ring (9).
3. The static load detection device for wind turbine blades according to claim 1, characterized in that: A storage battery (25) is connected to the bottom of the vehicle plate (1).
4. The static load detection device for wind turbine blades according to claim 1, characterized in that: The wheel comprises a driving wheel (5), a driven wheel (6) and a steering wheel (7); the driving wheel (5) is controlled by a mobile motor (24); and the steering wheel (7) is an electrically controlled universal wheel.