Detection device for internal damage of wind driven generator blade

Abstract

The utility model relates to the technical field of detection devices, in particular to a detection device for internal damage of a wind driven generator blade. A detection device for internal damage of a wind driven generator blade comprises a detection device body, the detection device body comprises a supporting frame, an inclination angle adjusting platform is arranged on the supporting frame, an inclination angle adjusting mechanism is arranged on one side of the inclination angle adjusting platform, an inclinometer, a laser radar and a laser are arranged on the inclination angle adjusting platform, and the laser radar is connected with a data line. The laser is connected with a power supply line. The design is simple in structure and convenient to use, the clearance distance of the blade of the wind driven generator during operation can be detected by means of cooperative work of the dip angle adjusting platform, the inclinometer, the laser radar, the laser device and other components, and therefore internal damage of the blade can be found easily, and the working efficiency is improved. Compared with a traditional manual visual inspection detection mode, the power generation loss can be reduced, and the method is more time-saving, scientific, accurate and stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection devices, and particularly relates to a detection device for internal damage of wind turbine blades. Background Technique

[0002] At present, wind turbines are developing towards large capacity, with taller and taller tower barrels and longer and longer blades, and frequent occurrence of malignant accidents such as tower sweeping and tower collapse. For the monitoring method of blade structure damage, it is basically manual regular inspection at present. Maintenance personnel enter the inside of the blade to visually inspect whether the internal structure is damaged when the fan is shut down. Due to reasons such as the shape and size of the blade, maintenance personnel can only enter 1 / 3 of the blade to observe, and it is impossible to effectively detect the internal damage of the blade. Content of the Utility Model

[0003] The purpose of the utility model is to provide a detection device for internal damage of wind turbine blades to solve the problems put forward in the above background technique.

[0004] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0005] A detection device for internal damage of wind turbine blades, including a detection device body, characterized in that the detection device body includes a support frame, an inclination angle adjustment platform is arranged on the support frame, and an inclination angle adjustment mechanism is arranged on one side of the inclination angle adjustment platform;

[0006] An inclinometer, a lidar and a laser are arranged on the inclination angle adjustment platform;

[0007] The lidar is arranged on the inclination angle adjustment platform through a first fixing bracket, and the lidar is connected with a data line;

[0008] The laser is arranged on the inclination angle adjustment platform through a second fixing bracket, and the laser is connected with a power supply line.

[0009] Further, the support frame adopts a tripod.

[0010] Further, the lower part of the inclination angle adjustment platform is connected with a tripod quick release plate.

[0011] Further, the inclination angle adjustment platform includes a mounting plate and a bottom plate. The mounting plate is arranged above the bottom plate. A connecting plate is arranged at the lower part of the front side of the mounting plate, and the lower part of the connecting plate is rotationally connected with the front part of the bottom plate through a rotating shaft;

[0012] The inclination angle adjusting mechanism includes a ball screw disposed between the mounting plate and the bottom plate. The ball screw includes a lead screw and a nut adapted to the lead screw. The nut is rotatably connected to the lower part of the crankshaft, and the upper part of the crankshaft is rotatably connected to the lower part of the mounting plate. The front part of the lead screw is connected with an adjusting knob.

[0013] Further, a first fixing block is provided on one side of the bottom plate close to the adjusting knob. The first fixing block is provided with a through hole for passing through the lead screw, and the lead screw is rotatably connected to the inner wall of the through hole;

[0014] The inclination angle adjusting mechanism includes a locking knob. The locking knob is connected with a screw rod for abutting against the first fixing block, and the adjusting knob is provided with a bolt hole for passing through the screw rod.

[0015] Further, a magnet for adsorbing the inclinometer is provided on the inclination angle adjusting platform.

[0016] Further, the first fixing bracket includes two first clamping pieces and second clamping pieces arranged in the front and rear rows. The lower parts of the first clamping piece and the second clamping piece are both fixed to the inclination angle adjusting platform by bolts, and the lidar is arranged between the first clamping piece and the second clamping piece.

[0017] Further, the data line adopts a USB interface data line.

[0018] Further, the second fixing bracket includes a connecting piece. One side part of the connecting piece is connected to the inclination angle adjusting platform by a bolt, and the other side part of the connecting piece is connected to the laser by a bolt.

[0019] Further, the power supply line adopts a DC interface power supply line.

[0020] The beneficial effects of the present utility model are as follows: A detection device for internal damage of wind turbine blades is provided, which has a simple structure and is convenient to use. By the cooperative work of components such as an inclination angle adjusting platform, an inclinometer, a lidar and a laser, the clearance distance detection of the blades of the wind turbine during operation can be realized, so as to facilitate the discovery of internal damage existing in the blades. Compared with the traditional manual visual inspection method, the power generation loss can be reduced, and it is more time-saving, scientific, accurate and stable.

[0021] Other features and advantages of the present utility model will be described in the subsequent description, and part of them will become obvious from the description, or be understood by implementing the present utility model. The purpose and other advantages of the present utility model can be realized and obtained through the structure pointed out in the description and the drawings. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Shows a partial structural schematic diagram of the present invention;

[0024] Figure 2 Shows a front view of a partial structure of the present invention;

[0025] Figure 3 Shows a side view of a partial structure of the present invention;

[0026] Figure 4 Shows a rear view of a partial structure of the present invention.

[0027] In the figure: 1, inclinometer; 2, lidar; 3, laser; 4, data line; 5, power supply line; 6, mounting plate; 7, adjustment knob; 8, tripod quick release plate; 9, connecting plate; 10, bottom plate; 11, lead screw; 12, crankshaft; 13, locking knob; 14, first fixing block. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] Such as Figures 1-4As shown in the figure, a detection device for internal damage of a wind turbine blade includes a detection device body. The detection device body includes a support frame. An inclination adjustment platform is provided on the support frame, and an inclination adjustment mechanism is provided on one side of the inclination adjustment platform. An inclinometer 1, a lidar 2, and a laser beam generator 3 are provided on the inclination adjustment platform. The lidar 2 is arranged on the inclination adjustment platform through a first fixing bracket, and the lidar 2 is connected with a data line 4. The laser beam generator 3 is arranged on the inclination adjustment platform through a second fixing bracket, and the laser beam generator 3 is connected with a power supply line 5. This design has a simple structure and is convenient to use. By the cooperative work of components such as the inclination adjustment platform, the inclinometer 1, the lidar 2, and the laser beam generator 3, the clearance distance detection of the wind turbine blade during operation can be realized, so as to facilitate the discovery of internal damage existing in the blade. Compared with the traditional manual visual inspection method, it can reduce the power generation loss, and is more time-saving, scientific, accurate, and stable.

[0030] The support frame adopts a tripod to stably support the inclination adjustment platform through the tripod. And in order to facilitate the connection of the inclination adjustment platform, a tripod quick-release plate 8 is connected to the lower part of the inclination adjustment platform.

[0031] The inclination adjustment platform includes a mounting plate 6 and a bottom plate 10. The mounting plate 6 is arranged above the bottom plate 10. A connecting plate 9 is provided at the lower part of the front side of the mounting plate 6, and the lower part of the connecting plate 9 is rotatably connected to the front part of the bottom plate 10 through a rotating shaft. The inclination adjustment mechanism includes a ball screw arranged between the mounting plate 6 and the bottom plate 10. The ball screw includes a lead screw 11 and a nut adapted to the lead screw 11. The nut is rotatably connected to the lower part of a crankshaft 12, and the upper part of the crankshaft 12 is rotatably connected to the lower part of the mounting plate 6. The front part of the lead screw 11 is connected with an adjustment knob 7. Thus, by rotating the adjustment knob 7, the lead screw 11 is driven to rotate, so that the nut moves along the extension direction of the lead screw 11. The opening angle of the crankshaft 12 is controlled by the nut, and then the inclination angle of the mounting plate 6 is adjusted. In order to facilitate the crankshaft 12 to push the mounting plate 6 to incline, a connecting block is provided at the lower part of the middle side of the mounting plate 6. There are two crankshafts 12, and the two crankshafts 12 are respectively arranged on the left and right sides of the connecting block. The upper and lower ends of the crankshaft 12 are respectively rotatably connected to the connecting block and the nut through rotating shafts.

[0032] On one side of the bottom plate 10 near the adjusting knob 7, there is a first fixing block 14. The first fixing block 14 is provided with a through hole for passing through the lead screw 11, and the lead screw 11 is rotatably connected to the inner wall of the through hole; the inclination angle adjusting mechanism includes a locking knob 13. The locking knob 13 is connected with a screw rod for abutting against the first fixing block 14. The adjusting knob 7 is provided with a bolt hole for passing through the screw rod. Thus, after the inclination angle of the mounting plate 6 is adjusted, by rotating the locking knob 13, the screw rod is driven to screw into the bolt hole, and the top end of the screw rod abuts against the first fixing block 14, so as to lock and fix the adjusting knob 7. On the rear side of the bottom plate 10, there is also a second fixing block. The second fixing block is provided with an insertion hole for inserting the end of the lead screw 11, and the lead screw 11 is rotatably connected to the inner wall of the insertion hole to facilitate the installation of the lead screw 11. And in order to ensure the use effect of the lead screw 11, the lead screw 11 includes a first smooth section, a threaded section, and a second smooth section connected in sequence. The first smooth section passes through the through hole and is connected with the adjusting knob 7. The nut is sleeved on the outside of the threaded section, and the second smooth section extends into the insertion hole.

[0033] The inclinometer 1 adopts an LCD screen to display the current inclination angle value of the inclination angle adjusting platform through the LCD screen. On the inclination angle adjusting platform, there is a magnet for adsorbing the inclinometer 1 to install the inclinometer 1 on the inclination angle adjusting platform in a magnetic adsorption manner. In order to ensure the stability of adsorption, the magnet can adopt a neodymium iron boron magnet.

[0034] The first fixing bracket includes two first clamping pieces and a second clamping piece arranged in the front and rear rows. The lower parts of the first clamping piece and the second clamping piece are both fixed to the inclination angle adjusting platform by bolts. The lidar 2 is arranged between the first clamping piece and the second clamping piece to realize the stable installation of the lidar 2. In order to facilitate data transmission and power supply, the data line 4 adopts a USB interface data line.

[0035] The second fixing bracket includes a connecting piece. One side part of the connecting piece is connected to the inclination angle adjusting platform by a bolt, and the other side part of the connecting piece is connected to the laser 3 by a bolt to realize the stable installation of the laser 3. In order to facilitate power supply, the power supply line 5 adopts a DC interface power supply line.

[0036] When the utility model is in use, if there is damage to the internal structure of the blade, the rigidity of the blade will attenuate to a certain extent compared with a intact blade. Since the blade is impacted by wind load during operation, it will undergo a certain degree of deformation. And the operating environments of the three blades of the same wind turbine are the same, so their deformation degrees should be consistent. If the internal structure damage of the blade causes its rigidity to attenuate, its deformation degree will increase, and this phenomenon will be reflected in the change of the clearance distance when the blade is running. The utility model realizes the detection of the clearance distance during the operation of the blade by the cooperation of components such as the lidar 2, the laser beam machine 3, the inclinometer 1 and the inclination adjustment platform. For example, the lidar 2 is used for laser ranging and can be connected to a computer through the data line 4; the laser beam machine 3 is used to emit a beam parallel to the lidar 2 to produce a light spot on the surface of the object to be measured and mark the measured position; the inclinometer 1 is used to display the current tilt angle of the inclination adjustment platform; the inclination adjustment platform uses components such as the adjustment knob 7, the ball screw and the crankshaft 12 to realize the adjustment of the tilt angle and can be clamped and connected to the tripod through the tripod quick release plate 8. Therefore, after detecting the clearance distances of the three blades in a wind turbine by the detection method of the utility model, comparing and analyzing them, it is possible to infer whether there is damage to the internal structure of the blade through the difference in the clearance values. The detection can be carried out without stopping the wind turbine, which can reduce the loss of power generation; at the same time, the detection is easy to operate and can save a lot of time compared with the manual visual inspection method; the lidar has high detection accuracy, fast sampling frequency and strong anti-interference ability, and has stronger controllability compared with the manual visual inspection; the detection structure has a large amount of data support and is more scientific, accurate and stable compared with the manual visual inspection method.

[0037] The detection device for internal damage of a wind turbine blade provided by the utility model can also be used for the evaluation and detection of internal structure defects of a wind turbine blade, and can also be used for the clearance detection of a wind turbine.

[0038] Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A detection device for internal damage of a wind turbine blade, comprising a detection device body, characterized in that: The detection device body comprises a support frame, a tilt adjustment platform is provided on the support frame, and a tilt adjustment mechanism is provided on one side of the tilt adjustment platform; The tilt adjustment platform is provided with an inclinometer, a laser radar and a laser; The laser radar is arranged on the tilt adjustment platform through a first fixing bracket, and the laser radar is connected with a data line; The laser is arranged on the tilt adjustment platform via a second fixing bracket, and the laser is connected with a power supply line.

2. A device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The supporting frame adopts a tripod.

3. A device for detecting internal damage of a wind turbine blade according to claim 2, characterized in that: The lower part of the inclination adjustment platform is connected with a tripod quick-release plate.

4. A device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The tilt angle adjustment platform comprises a mounting plate and a bottom plate, wherein the mounting plate is arranged above the bottom plate, a connecting plate is arranged at the lower part of the front side of the mounting plate, and the lower part of the connecting plate is rotatably connected to the front part of the bottom plate through a rotating shaft; The inclination adjustment mechanism includes a ball screw arranged between the mounting plate and the base plate, the ball screw includes a screw rod and a nut matched with the screw rod, the nut is rotatably connected to the lower part of the crankshaft, the upper part of the crankshaft is rotatably connected to the lower part of the mounting plate, and the front part of the screw rod is connected to an adjustment knob.

5. A device for detecting internal damage of a wind turbine blade according to claim 4, characterized in that: A first fixing block is provided on one side of the bottom plate close to the adjusting knob, and a through hole for passing the screw rod is provided on the first fixing block, and the screw rod is rotatably connected to the inner wall of the through hole; The inclination adjustment mechanism comprises a locking knob, the locking knob is connected with a screw rod for resisting the first fixing block, and the adjustment knob is provided with a bolt hole for passing the screw rod.

6. A device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The inclination adjustment platform is provided with a magnet for adsorbing the inclinometer.

7. A device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The first fixing bracket includes a first clamping plate and a second clamping plate arranged in the front and rear, and the lower parts of the first clamping plate and the second clamping plate are fixed to the inclination adjustment platform by bolts, and the laser radar is arranged between the first clamping plate and the second clamping plate.

8. The device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The data cable adopts a USB interface data cable.

9. A device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The second fixing bracket includes a connecting plate, one side of which is connected to the tilt adjustment platform via bolts, and the other side of which is connected to the laser via bolts.

10. A device for detecting internal damage of a wind turbine blade according to claim 1, characterized in that: The power supply line adopts a DC interface power supply line.

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