Wind turbine blade data measuring device
By installing a binocular camera on the wind turbine blade data measurement device, the problem of insufficient clearance measurement accuracy in traditional methods has been solved, enabling real-time monitoring and multi-dimensional data acquisition, thereby improving the operational safety and maintenance efficiency of wind turbines.
Patent Information
- Application Number
- CN202520541859.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Traditional methods for measuring the clearance of wind turbine blades are not accurate enough and cannot be monitored in real time, which affects the safe operation of the equipment.
The blades are fixed to the tower with clamps, and several binocular cameras are installed. They are connected to an industrial control computer and signal lines to realize real-time monitoring of the clearance distance between the blades and the tower and multi-dimensional data acquisition of the blade status.
It improves the accuracy and real-time performance of clearance measurement, reduces the probability of accidents, provides comprehensive blade condition monitoring data support, and reduces operation and maintenance costs.
Smart Images
Figure CN223754193U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wind turbine technical field especially is related to a wind turbine blade data measuring device. BACKGROUND
[0002] Wind turbine generator unit is the system that wind's kinetic energy is converted into electric energy. It includes wind wheel, generator, wind wheel contains blade, hub, reinforcing piece etc. and is formed, it has blade wind power rotation power generation, generator machine head rotation function.
[0003] In wind power generation system, the operation state monitoring of wind turbine blade is crucial. The clearance distance between the blade tip and the tower drum directly relates to the safety of equipment operation, and the traditional clearance measurement method has problems such as insufficient precision and inability to monitor in real time.
[0004] Therefore, a wind turbine blade data measuring device is needed to solve the above problems. UTILITY MODEL CONTENT
[0005] In order to help solve the problems in the prior art, the utility model provides a wind turbine blade data measuring device, which adopts the following technical scheme: it comprises a hoop, a hoop locking mechanism, a plurality of cameras, an industrial computer, a power supply line and a signal line.
[0006] The hoop is locked on the tower drum by the hoop locking mechanism.
[0007] The plurality of cameras are arranged on the hoop in a ring shape, the camera lens of the camera faces away from the horizontal direction of the tower drum, and the camera is a binocular camera.
[0008] The industrial computer is arranged in the tower drum, one end of the power supply line and the signal line is connected with the industrial computer, and the other end is connected with the plurality of cameras.
[0009] Further,
[0010] The hoop is provided with a slide rail on the ring side, a plurality of mounting seats are slidably arranged on the slide rail, the plurality of cameras are arranged on the plurality of mounting seats respectively, a first locking member is arranged on the mounting seat, and the first locking member is used to lock the mounting seat at a fixed position on the slide rail.
[0011] The camera is slidably arranged on the mounting seat, the sliding direction of the camera relative to the mounting seat is the height direction, a second locking member is arranged on the camera, and the second locking member is used to lock the camera at a fixed position on the mounting seat.
[0012] The camera is provided with four.
[0013] The four cameras are uniformly distributed in the ring direction of the tower drum.
[0014] The inner side of the hoop is provided with a chopped felt layer.
[0015] The two ends of the hoop are a fixed end and a traction end respectively, the hoop locking mechanism comprises a fixing strip, a locking screw and a pull wire, the fixing strip is arranged on the outer side of the fixed end of the hoop, the locking screw is arranged on the fixing strip and is in threaded connection with the fixing strip, the locking screw is arranged horizontally, and the two ends of the pull wire are connected with the traction end of the hoop and the suspended end of the locking screw respectively.
[0016] The outer side of the fixed end of the hoop is provided with a limiting plate, a limiting groove is formed between the limiting plate and the fixed end of the hoop, and the traction end of the hoop passes through the limiting groove.
[0017] A gap elimination nut is arranged on the locking screw in a threaded mode.
[0018] The end of the locking screw is provided with a rotating disc.
[0019] According to the above, the hoop is fixed on the tower drum wall, the hoop locking mechanism is locked, a plurality of binocular cameras are arranged in the hoop in the circumferential direction, and the binocular cameras are responsible for the clearance distance between the blade tip and the tower drum when the wind turbine is at the corresponding position, so that the measurement data is more accurate, real-time monitoring can be realized, the running state of the wind turbine can be acquired in time, and the probability of accidents is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a structure schematic diagram when the utility model is used;
[0021] Figure 2 is a structure schematic diagram of the utility model;
[0022] Figure 3 is a distribution schematic diagram of a monitoring area when the utility model is used
[0023] Figure 4 is a working principle schematic diagram for clearance measurement by using the utility model;
[0024] Figure 5 is a working principle schematic diagram for blade tip torsion angle measurement by using the utility model.
[0025] Fig. 1 is a hoop; 11 is a sliding rail; 12 is a mounting seat; 13 is a limiting plate; 2 is a camera; 3 is an industrial computer; 4 is a power supply wire; 5 is a signal wire; 6 is a chopped felt layer; 7 is a fixing strip; 8 is a locking screw; 81 is a gap elimination nut; 9 is a pull wire. DETAILED DESCRIPTION
[0026] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.
[0027] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion, for example, a process, method, device, product or equipment including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.
[0028] The above and other embodiments of the present application will be described in detail below with reference to the accompanying drawings. Figures 1-5 The present application will be described in further detail.
[0029] Reference Figures 1-3 A wind turbine blade data measurement device, comprising: a hoop 1, a hoop locking mechanism, a plurality of cameras 2, an industrial computer 3, a power supply line 4 and a signal line 5;
[0030] The hoop 1 is locked on the tower drum through the hoop locking mechanism;
[0031] The plurality of cameras 2 are arranged on the hoop 1 in a ring shape, the camera lens of the camera 2 faces away from the horizontal direction of the tower drum, and the camera 2 is a binocular camera 2;
[0032] The industrial computer 3 is arranged in the tower drum, one end of the power supply line 4 and the signal line 5 is connected with the industrial computer 3, and the other end is connected with the plurality of cameras 2, the plurality of cameras 2 are powered through the power supply line 4, and the signal line 5 is used for transmitting digital, image and other signals.
[0033] Based on the above structure, the hoop 1 is fixed on the tower drum wall and locked through the hoop locking mechanism, a plurality of binocular cameras 2 are installed on the hoop 1 in a ring shape, and are respectively responsible for the clearance distance between the blade tip (as shown in the figure P point) and the tower drum when the wind turbine is at the corresponding position. Not only the measured data is more accurate, but also real-time monitoring can be realized, the running state of the wind turbine can be obtained in time, and the probability of accidents is reduced.
[0034] As Figure 2As shown, the hoop 1 is provided with a slide rail 11 on the ring side, and a plurality of mounting seats 12 are slidingly arranged on the slide rail 11. A plurality of cameras 2 are arranged on the mounting seats 12, respectively. The mounting seats 12 are provided with first locking members for locking the mounting seats 12 at fixed positions on the slide rail 11. In this way, the position of the camera 2 in the hoop 1 can be adjusted by sliding the mounting seat 12 on the slide rail 11. The slide rail 11 is made of a material that can be plastically deformed, so as to be deformed adaptively when the hoop 1 is installed on the tower drum. When the position of the camera 2 is adjusted, the first locking member is used to fix the position. The first locking member can be a bolt or the like. The camera 2 is slidingly arranged on the mounting seat 12, and the sliding direction of the camera 2 relative to the mounting seat 12 is the height direction. The camera 2 is provided with a second locking member for locking the camera 2 at a fixed position on the mounting seat 12. In this way, when the position of the hoop 1 is fixed, the height of the camera 2 can be adjusted by sliding the camera 2 on the mounting seat 12. When the position adjustment is completed, the second locking member is used to fix the camera 2 at the fixed position of the mounting seat 12. The second locking member can be a bolt or the like.
[0035] As shown in the drawings, Figure 3 In the embodiment, four cameras 2 are arranged, which are uniformly distributed in the circumferential direction of the tower drum. The front, rear, left and right correspond to the measurement areas 1, 3, 4 and 2, respectively.
[0036] Further optimization is that, as shown in the drawings, Figure 2 The inner side of the hoop 1 is provided with a short-cut felt layer 6, which is hand-pasted on the surface of the tower drum by using resin. The short-cut felt has good wettability and plasticity, and is more closely attached to the surface of the tower drum. The hoop 1 tightly holds the surface of the short-cut felt layer 6, which has higher corrosion resistance, higher strength and stiffness, and stronger fatigue resistance in harsh environments with more wind and sand.
[0037] As shown in the drawings, Figure 2As shown, the two ends of the hoop 1 are fixed end and traction end respectively, the hoop locking mechanism includes a fixed strip 7, a locking screw 8 and a pull wire 9, the fixed strip 7 is arranged outside the fixed end of the hoop 1, the locking screw 8 is arranged on the fixed strip 7 and is threadedly connected with the fixed strip 7, the locking screw 8 is arranged horizontally, the two ends of the pull wire 9 are connected with the traction end of the hoop 1 and the overhanging end of the locking screw 8 respectively, a limiting plate 13 is arranged outside the fixed end of the hoop 1, a limiting groove is formed between the limiting plate 13 and the fixed end of the hoop 1, the traction end of the hoop 1 passes through the limiting groove to limit the traction end of the hoop 1; in this way, during use, the hoop is sleeved on the tower drum, the traction end of the hoop 1 is pulled towards the fixed strip 7 by screwing the locking screw 8, so that the hoop 1 is locked on the sleeve, in order to avoid eliminating the gap between the locking screw 8 and the fixed strip 7, a gap-eliminating nut 81 is threadedly sleeved on the locking screw 8, after the locking screw 8 locks the hoop 1, the gap-eliminating nut 81 is rotated to eliminate the gap between the threads, and in order to facilitate the rotation of the locking screw 8, a rotating disc can be arranged at the end of the locking screw 8.
[0038] As Figure 4 shown, the working principle of the clearance measurement performed by the present application is as follows:
[0039] P is the target measurement point, L and R are the optical centers of the binocular camera, T is the distance between the two optical centers, f is the focal length during the measurement process, P1 and P2 are the imaging points of the target measurement point on the imaging screen, wherein Xl is the distance between the center line of the left camera and the imaging point, Xr is the distance between the center line of the right camera and the imaging point, and Z is the depth information to be calculated, i.e. the clearance distance.
[0040] Define d = |Xl| + |Xr|, d is the parallax of the camera during the measurement process;
[0041] The calculation formula is as follows:
[0042] P1P2 = T - (|Xl| + |Xr|) = T - d
[0043] From ΔPP1P2 ~ ΔPLR
[0044] It can be obtained that That is
[0045] Finally, it is obtained that
[0046] Figure 5As shown, the present application can also be used to measure the tip twist angle. During the first rotation of the blade to be parallel to the tower, the coordinates of points A and B can be measured by the binocular camera. After the blade rotates a full circle and is parallel to the tower again, the coordinates of points C and D after deformation are measured again. At this time, the coordinates of the four points in space are A(x1, y1, z1), B(x2, y2, z2), C(x3, y3, z3) and D(x4, y4, z4), respectively. The numerical value of the angle θ between the straight line AB and the straight line CD in space, i.e. the twist angle, can be obtained.
[0047] The calculation formula is as follows:
[0048] For straight line AB, the direction vector is
[0049] For straight line CD, the direction vector is
[0050] The vector The length of the vector
[0051] The vector The length of the vector
[0052] The angle θ between the straight line AB and the straight line CD in space is
[0053]
[0054] The twist angle is
[0055] After the clearance data and the twist data are measured, the data are transmitted back to the industrial computer 3 through the signal line 5, and the corresponding control strategy is adjusted according to the data. When the clearance data or the twist deformation data exceeds the preset safety range or the normal operation range, an alarm is sent in time to remind the staff to take corresponding measures.
[0056] In summary: the traditional method can usually only measure the clearance distance of the blade, and the present application based on the binocular camera 2 can not only accurately measure the clearance distance between the blade and the tower structure, but also can obtain the twist deformation data of the blade at the same time, realizing the multi-dimensional measurement of the blade state, and providing more comprehensive data support for the operation and maintenance of the wind turbine;
[0057] The present application can also obtain full-field data information on the surface of the blade, not just discrete points or regional data. Through processing and analysis of a large amount of image data, the three-dimensional coordinate changes of each point on the surface of the blade can be obtained, so that the deformation of the blade can be more accurately described, which is helpful to find possible local defects or abnormal deformations on the blade;
[0058] It has good scalability, and can flexibly adjust the installation position, number and parameters of the camera, and increase other functional modules, such as data storage and remote transmission, according to different wind turbine models, blade sizes and monitoring requirements, so as to meet the needs of different users and application scenarios.
[0059] Compared with some traditional measurement methods, such as using high-precision laser range finder or radar system, the binocular camera has relatively low cost. At the same time, due to its relatively simple installation and maintenance, the overall installation and maintenance cost can also be reduced.
[0060] Through real-time and accurate measurement and early warning functions, the operation and maintenance personnel can help to carry out maintenance work more targetedly, reduce unnecessary inspection and maintenance times, reduce operation and maintenance cost, and improve the operation efficiency and economic benefit of the wind turbine.
[0061] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model. Those skilled in the art can make modifications to the embodiment without creative contribution after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.
Claims
1. A wind turbine blade data measuring device, characterised in that, The utility model relates to a kind of tower crane camera systems, including: Hoop (1), hoop locking mechanism, several cameras (2), industrial computer (3), power supply line (4) and signal line (5); The hoop (1) is locked on the tower drum by the hoop locking mechanism; Several cameras (2) are arranged on the hoop (1) along the ring direction, the camera lens of the camera (2) is directed to the horizontal direction away from the tower drum, and the camera (2) is a binocular camera (2); The industrial computer (3) is arranged in the tower drum, one end of the power supply line (4) and the signal line (5) is connected with the industrial computer (3), and the other end is connected with the several cameras (2); The two ends of the hoop (1) are fixed end and traction end respectively, the hoop locking mechanism includes fixed strip (7), locking screw (8) and guy (9), the fixed strip (7) is arranged on the outside of the fixed end of the hoop (1), the locking screw (8) is arranged on the fixed strip (7) and is threadedly connected with the fixed strip (7), the locking screw (8) is horizontally arranged, and the two ends of the guy (9) are connected with the traction end of the hoop (1) and the suspended end of the locking screw (8) respectively.
2. A wind turbine blade data measuring device according to claim 1, characterised in that: The hoop (1) is provided with slide rail (11) on the ring side, the slide rail (11) is slidably provided with a plurality of mounting seats (12), and the plurality of cameras (2) are arranged on the plurality of mounting seats (12) respectively, the mounting seat (12) is provided with a first locking member, and the first locking member is used to lock the mounting seat (12) at a fixed position on the slide rail (11).
3. A wind turbine blade data measuring device according to claim 2, characterised in that: The camera (2) is slidably arranged on the mounting seat (12), the sliding direction of the camera (2) relative to the mounting seat (12) is the height direction, the camera (2) is provided with a second locking member, and the second locking member is used to lock the camera (2) at a fixed position on the mounting seat (12).
4. A wind turbine blade data measuring device according to claim 1, characterised in that: The camera (2) is provided with four.
5. A wind turbine blade data measuring device according to claim 4, characterised in that: The four cameras (2) are evenly distributed in the ring direction of the tower drum.
6. A wind turbine blade data measuring device according to claim 1, characterised in that: The inner side of the hoop (1) is provided with a short cut felt layer (6).
7. A wind turbine blade data measuring device according to claim 1, characterised in that: The outside of the fixed end of the hoop (1) is provided with a limiting plate (13), a limiting groove is formed between the limiting plate (13) and the fixed end of the hoop (1), and the traction end of the hoop (1) passes through the limiting groove.
8. A wind turbine blade data measuring device according to claim 1, characterised in that: The locking screw (8) is threadedly provided with a backlash nut (81).
9. A wind turbine blade data measuring device according to claim 1, characterised in that: The end of the locking screw (8) is provided with a turntable.