Tower drum concave-convex value detection device and method

Abstract

The invention relates to the technical field of tower drum concave-convex value detection, in particular to a tower drum concave-convex value detection device and method.The detection device comprises a fixed base, a rotating base, a lifting base, a telescopic arm and a three-dimensional laser scanner, and the rotating base is arranged on the fixed base, rotationally matched with the fixed base and capable of rotating around the axis of the rotating base; the lifting seat is arranged on the rotating seat; the telescopic arm is connected with the lifting seat; the three-dimensional laser scanner is arranged at the tail end of the telescopic arm and used for scanning the concave-convex area of the tower drum. According to the method, long-distance, large-range and rapid scanning is carried out on the concave-convex area of the tower drum through the three-dimensional laser scanner, and compared with an existing measurement method, the operation safety is improved, and the safety risk is reduced. The measurement time of a single concave-convex area is about two hours, and compared with an existing measurement method, the detection efficiency is improved, and the working intensity is reduced. The measurement precision of the laser scanner is 0.02 mm, and compared with an existing measurement method, the measurement precision is improved. The operation steps are simplified, and the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of tower concavity / convexity value detection technology, and in particular to tower concavity / convexity value detection device and method. Background Technology

[0002] As a crucial device for converting wind energy into electrical energy, the operational stability and safety of wind turbines are key to ensuring a stable power supply. The wind turbine tower, a vital supporting component, is large and tall, and is susceptible to severe weather conditions such as sandstorms, rain, and typhoons, which can cause serious abnormalities such as unevenness and dents in the tower walls. During long-term operation, these uneven areas will continue to worsen under repeated loads. If not addressed promptly, this can lead to the turbine's inability to operate normally, or even serious accidents such as tower collapse, significantly impacting equipment safety and economic efficiency.

[0003] The current method for detecting the concavity and convexity of wind turbine towers mainly relies on high-altitude operations. Surveyors need to descend from the top of the tower, which is hundreds of meters high, and use tools such as feeler gauges to measure the concavity and convexity areas. This method is characterized by high safety risks and low measurement efficiency. Summary of the Invention

[0004] This application provides a tower concavity / convexity value detection device and method to solve the problem that the detection of concavity / convexity value of existing wind turbine towers mainly relies on high-altitude operations, requiring measurement personnel to descend from the top of the 100-meter tower and use tools such as feeler gauges to measure the concavity / convex area, which has high safety risks and low measurement efficiency.

[0005] On the one hand, this application provides a tower concavity / convexity detection device, comprising: Fixed base; The rotating seat is mounted on the fixed seat and rotates in conjunction with the fixed seat, allowing it to rotate around its own axis. The lifting seat is mounted on the rotating seat; Telescopic boom, connected to lifting platform; A 3D laser scanner, located at the end of the telescopic arm, is used to scan the concave and convex areas of the tower.

[0006] One possible design also includes reflective stickers that are adhered to the uneven areas of the tower.

[0007] One possible design also includes: End seat, located at the end of the telescopic boom; The drum has a slit at the lower end of its wall. A spool is placed inside a drum, and reflective tape is wound around the spool. The spool can be rotated to allow the reflective tape to fall from the slit.

[0008] In one possible design, the device also includes an air knife, which is mounted on the end seat on the side of the reflective pad away from the uneven area of ​​the tower and is capable of moving up and down.

[0009] In one possible design, a light source is also included, located on the inner wall of the tower, for illuminating the inner wall of the tower along its height.

[0010] In one possible design, the device also includes: Roller frame; The application roller is rotatably mounted on a roller frame and applies the reflective tape to the uneven areas of the tower by rolling it across the surface of the reflective tape.

[0011] In one possible design, the device also includes a roller shaft, which comprises a round shaft section and a square shaft section. The round shaft section rotates with the center of the laying roller. An elongated hole is provided on the roller frame, and the square shaft section passes through the elongated hole and is clearance-fitted with the inner wall of the elongated hole. A spring is provided in the elongated hole, with one end of the spring connected to one end of the elongated hole and the other end connected to the square shaft section.

[0012] On the other hand, this application also provides a method for detecting the unevenness of a tower, using the tower unevenness detection device described above, the method comprising: Identify the concave and convex areas of the tower; Move the 3D laser scanner to a position opposite to the concave and convex areas of the tower; A 3D laser scanner scans the concave and convex areas of the tower to obtain point cloud data corresponding to the concave and convex areas of the tower. Reverse modeling is performed based on point cloud data to generate a 3D model of the concave and convex areas of the tower. The 3D model is compared with the standard surface parameters of the tower to obtain the tower's concavity and convexity values.

[0013] In one possible design, after determining the concave and convex areas of the tower, the following is also included: Spray water onto the uneven areas of the tower and apply reflective tape to those areas.

[0014] In one possible design, the concave and convex areas of the tower are determined by: illuminating the inner wall of the tower along its height direction, and defining the areas of alternating light and dark on the inner wall of the tower as the concave and convex areas of the tower.

[0015] The beneficial effects of this application are as follows: The tower unevenness detection device in this application uses a 3D laser scanner to perform long-distance, large-area, and rapid scanning of the uneven areas of the tower. Compared with existing measurement methods, this improves operational safety and reduces safety risks. The measurement time for a single uneven area is approximately two hours, which, compared with existing methods, improves detection efficiency and reduces workload. The laser scanner has a measurement accuracy of 0.02mm, which is also improved compared to existing methods. The device simplifies the operation process and increases operational efficiency.

[0016] The tower concavity / convexity value detection method provided in this application, by employing the tower concavity / convexity value detection device of this application, simultaneously incorporates all the aforementioned advantages of the tower concavity / convexity value detection device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of the tower concavity / convexity detection device provided in the embodiments of this application; Figure 2 Schematic diagram of the structure at the end seat of the tower concavity / convexity detection device provided in the embodiments of this application. Figure 1 ; Figure 3 Schematic diagram of the structure at the end seat of the tower concavity / convexity detection device provided in the embodiments of this application. Figure 2 ; Figure 4 This is a schematic diagram of the structure of the laying roller of the tower unevenness detection device provided in the embodiments of this application; Figure 5 A flowchart of a tower concavity / convexity detection method provided in an embodiment of this application.

[0019] Figure label: 100. Fixed seat; 200. Rotating seat; 300. Lifting seat; 400. Telescopic arm; 500. 3D laser scanner; 610. End seat; 620. Roller; 630. Reel; 640. Air knife; 710. Roller frame; 711. Long hole; 720. Laying roller; 731. Round shaft section; 732. Square shaft section; 740. Spring; 800. Ladder; 900. Tower concave-convex area. Detailed Implementation

[0020] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The following is combined with Figures 1-4 This application describes the tower concavity / convexity detection device provided in the embodiments of this application.

[0022] Reference Figure 1 As shown, the tower unevenness detection device includes a fixed base 100, a rotating base 200, a lifting base 300, a telescopic arm 400, and a 3D laser scanner 500. The fixed base 100 is installed on the existing ladder 800 inside the tower. The rotating base 200 is mounted on the fixed base 100 via a rotary support and can rotate around its own axis driven by a motor. A linear module is provided on the rotating base 200, and the lifting base 300 is mounted on the linear module, enabling lifting and lowering. The telescopic arm 400 is fixedly connected to the lifting base 300 and is a continuous telescopic robotic arm. The 3D laser scanner 500 is located at the end of the telescopic arm 400 and is used to scan the unevenness area 900 of the tower.

[0023] Utilizing the technical solution provided in the above embodiments, a 3D laser scanner 500 performs long-distance, large-area, and rapid scanning of the tower's uneven area 900. Compared with existing measurement methods, this improves operational safety and reduces safety risks. The measurement time for a single uneven area is approximately two hours, which, compared to existing methods, improves detection efficiency and reduces workload. The laser scanner's measurement accuracy is 0.02 mm, which, compared to existing methods, improves measurement accuracy. The operation steps are simplified, and operational efficiency is increased.

[0024] In some specific embodiments, the device further includes a reflective sticker adhered to the uneven area 900 of the tower. The reflective sticker can be a magnetic reflective sticker. For example, a surveyor can climb up the existing ladder 800 inside the tower to the uneven area 900, and then apply the magnetic reflective sticker to the uneven area 900. In this way, the reflection from the reflective sticker facilitates accurate scanning of the uneven area 900 by the 3D laser scanner 500. In other embodiments, the reflective sticker can be a thin reflective film that can be directly attached to the uneven area 900 of the tower.

[0025] Reference Figure 2 , Figure 3As shown, in some specific embodiments, the device further includes an end seat 610, a drum 620, and a reel 630. The end seat 610 is fixed to the end of the telescopic arm 400 by bolts or welding, and can reach a position opposite to the concave-convex area 900 of the tower under the drive of the telescopic arm 400. A slit is formed at the lower end of the drum wall of the drum 620. The reel 630 is rotatably mounted inside the drum 620, and reflective tape is wound around the reel 630. Rotation of the reel 630 allows the reflective tape to fall from the slit. Laser breakpoints are provided on the reflective tape at regular intervals to facilitate tearing and separating adjacent reflective tapes. Specifically, the end seat 610 includes two layers, connected by a column, with the 3D laser scanner 500 located in the lower layer of the end seat 610. A rotary motor is installed on the upper layer of the end base 610. The output shaft of the rotary motor is connected to the rotating shaft. The rotary motor can drive the rotating shaft to rotate, thereby causing the free end of the reflective sticker to fall from the opening and suspend the reflective sticker at a position opposite to the concave and convex area 900 of the tower.

[0026] Reference Figure 2 , Figure 3 As shown, in some specific embodiments, the device further includes an air knife 640, which is mounted on the end base 610 and located on the side of the reflective sticker away from the concave-convex area of ​​the tower. The air knife 640 can move up and down. Specifically, a lifting motor is provided on the upper layer of the end base 610. One end of the air knife 640 is slidably engaged with the column of the end base 610, and the other side of the air knife 640 is threadedly connected to a vertically arranged lead screw. The lead screw is driven by the lifting motor, which can drive the lead screw to rotate, thereby driving the air knife 640 to move up and down. An air compressor is provided on the lower layer of the end base 610. The air compressor is connected to the air knife 640 through a hose. Thus, after the air compressor is started, the air knife 640 can blow high-pressure, high-speed airflow onto the reflective sticker suspended at a position opposite to the concave-convex area 900 of the tower. The high-speed airflow blows the lower section of the reflective sticker and attaches it to the concave-convex area 900 of the tower. Under the action of the high-speed airflow pressure, two adjacent reflective stickers separate from each other at the laser breakpoint.

[0027] To further improve the adherence of the reflective sticker to the uneven area 900 of the tower, the device also includes a roller frame 710 and a laying roller 720. The laying roller 720 is rotatably mounted on the roller frame 710 and lays the reflective sticker onto the uneven area 900 of the tower by rolling it on the surface of the reflective sticker. Specifically, the measuring personnel climb up the existing ladder 800 inside the tower to the uneven area 900, then hold the roller frame 710 and move the laying roller 720 to roll it along the uneven area 900 of the tower on the surface of the reflective sticker, thereby improving the adherence of the reflective sticker to the uneven area 900 of the tower and improving the scanning accuracy of the 3D laser scanner 500 on the uneven area 900 of the tower. In some embodiments, the outer surface of the laying roller 720 has a soft brush layer, which helps to make the reflective sticker adhere more closely to the uneven area 900 of the tower during rolling.

[0028] In some specific embodiments, the device further includes a roller 730, which comprises a round shaft section 731 and a square shaft section 732. The round shaft section 731 is rotatably engaged with the center of the laying roller 720. An elongated hole 711 is provided on the roller frame 710, and the square shaft section 732 passes through the elongated hole 711, with a clearance fit to the inner wall of the elongated hole 711. A spring 740 is provided in the elongated hole 711, with one end of the spring 740 connected to one end of the elongated hole 711 and the other end connected to the square shaft section 732. Thus, under the elastic force of the spring 740, the laying roller 720 can roll as close as possible to the concave and convex areas 900 of the tower, thereby improving the conformity of the reflective tape to the concave and convex areas 900 of the tower.

[0029] In some specific embodiments, in order to improve the fit between the reflective sticker and the uneven area 900 of the tower, the inner wall of the tower can be sprayed with atomizing water through an atomizing pipe before the reflective sticker is applied to increase the surface humidity, thereby improving the fit between the reflective sticker and the uneven area 900 of the tower.

[0030] In some specific embodiments, the device also includes a light source, which is a high-intensity flashlight located on the inner wall of the tower, used to illuminate the inner wall of the tower along its height. Specifically, the surveyor turns off the lights inside the tower, turns on the high-intensity flashlight, places the flashlight close to the inner wall of the tower at the bottom of the tower, and moves it slowly, visually inspecting along the direction of the flashlight beam. If alternating light and dark areas appear on the inner wall of the tower, this area is the uneven area 90° of the tower.

[0031] On the other hand, this application also provides a method for detecting the concavity / convexity value of a tower, using the tower concavity / convexity value detection device described in the above embodiments, with reference to... Figure 5 As shown, the detection methods include: S1. Determine the concave and convex area of ​​the tower at 900°. S2. Apply reflective tape to the uneven areas of the tower at a 900mm angle. S3. Move the 3D laser scanner 500 to a position opposite to the concave and convex area 900 of the tower barrel; S4. The 3D laser scanner 500 scans the concave and convex area 900 of the tower barrel to obtain point cloud data corresponding to the concave and convex area 900 of the tower barrel; S5. Perform reverse modeling based on the point cloud data to generate a 3D model of the concave and convex area 900 of the tower barrel; S6. Compare the 3D model with the standard surface parameters of the tower barrel to obtain the concave and convex value data of the tower barrel.

[0032] In some specific embodiments, to determine the concave and convex area 900 of the tower barrel, specifically include: illuminate the inner wall of the tower barrel along the height direction of the tower barrel, and the area with alternating light and dark on the inner wall of the tower barrel is the concave and convex area 900 of the tower barrel.

[0033] The specific detailed steps are as follows: First, turn on the 3D laser scanner 500, connect it to the workstation through a data transmission line, and calibrate the instrument of the 3D laser scanner 500.

[0034] Subsequently, the surveyor turns off the lights inside the tower barrel, turns on the strong flashlight, at the bottom of the tower barrel, presses the flashlight closely against the inner wall of the tower barrel and slowly moves it, and visually observes along the direction of the flashlight light. If there is an area with alternating light and dark on the inner wall of the tower barrel, this area is the concave and convex area 900 of the tower barrel.

[0035] Next, after the surveyor takes safety protection measures, ascend to the same height as the concave and convex area 900 of the tower barrel with the help of the ladder 800 and the climbing aid.

[0036] Next, cover the entire concave and convex area 900 of the tower barrel with magnetic reflective stickers.

[0037] Next, turn on the 3D laser scanner 500 and adjust the 3D laser scanner 500 to about 50 cm in front of the concave and convex area 900 of the tower barrel.

[0038] Next, the 3D laser scanner 500 scans the concave and convex area 900 of the tower barrel, and records and saves the point cloud data on the workstation supporting the 3D laser scanner 500.

[0039] Next, perform reverse modeling on the point cloud data through the analysis software Geomagic to generate a 3D model of the concave and convex area.

[0040] Next, compare the 3D model of the concave and convex area with the standard surface parameters of the tower barrel to obtain the concave and convex value data.

[0041] Finally, compare the detected concave and convex value results with relevant standards and take corresponding measures.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A tower concavity / convexity detection device, characterized in that, include: Fixed base; A rotating seat is mounted on the fixed seat and rotates in conjunction with the fixed seat, allowing it to rotate around its own axis. A lifting seat is provided on the rotating seat; A telescopic arm is connected to the lifting base; A 3D laser scanner is installed at the end of the telescopic arm to scan the concave and convex areas of the tower.

2. The tower concavity / convexity detection device according to claim 1, characterized in that: It also includes reflective stickers, which are adhered to the uneven areas of the tower.

3. The tower concavity / convexity detection device according to claim 2, characterized in that, Also includes: An end seat is provided at the end of the telescopic arm; The drum has a slit at the lower end of its wall. A spool is disposed inside the drum, and the reflective tape is wound around the spool. The spool can be rotated to allow the reflective tape to fall from the slit.

4. The tower concavity / convexity detection device according to claim 3, characterized in that: It also includes an air knife, which is mounted on the end seat and located on the side of the reflective sticker away from the concave and convex areas of the tower, and can move up and down.

5. The tower concavity / convexity detection device according to any one of claims 1-4, characterized in that: It also includes a light source, located on the inner wall of the tower, used to illuminate the inner wall of the tower along its height.

6. The tower concavity / convexity detection device according to any one of claims 2-4, characterized in that, Also includes: Roller frame; A laying roller is rotatably mounted on the roller frame and lays the reflective tape on the uneven area of ​​the tower by rolling on the surface of the reflective tape.

7. The tower concavity / convexity detection device according to claim 6, characterized in that: It also includes a roller shaft, which includes a round shaft section and a square shaft section. The round shaft section is rotatably engaged with the center of the laying roller. An elongated hole is provided on the roller frame. The square shaft section passes through the elongated hole and is in clearance fit with the inner wall of the elongated hole. A spring is provided in the elongated hole. One end of the spring is connected to one end of the elongated hole, and the other end is connected to the square shaft section.

8. A method for detecting the concavity / convexity value of a tower, characterized in that, The method using the tower concavity / convexity detection device according to any one of claims 1-7 includes: Identify the concave and convex areas of the tower; Move the 3D laser scanner to a position opposite to the concave and convex areas of the tower; The three-dimensional laser scanner scans the concave and convex areas of the tower to obtain point cloud data corresponding to the concave and convex areas of the tower. Reverse modeling is performed based on the point cloud data to generate a three-dimensional model of the concave and convex areas of the tower. The three-dimensional model is compared with the standard surface parameters of the tower to obtain the tower's concavity and convexity values.

9. The tower concavity / convexity detection method according to claim 8, characterized in that, After determining the uneven area of ​​the tower, the method further includes: Reflective tape is applied to the uneven areas of the tower.

10. The tower concavity / convexity detection method according to claim 8, characterized in that, The determination of the concave and convex areas of the tower tube includes: illuminating the inner wall of the tower tube along its height direction, and defining the areas of alternating light and dark on the inner wall of the tower tube as the concave and convex areas of the tower tube.

Images