A crack repair control system based on wind turbine blades

Abstract

The present invention is applicable to the technical field of wind turbine blade repair, and provides a crack repair control system based on wind turbine blades, including a welding frame and a blade to be repaired clamped on the welding frame; also including a support frame rotatably matched with the welding frame; a hydraulic cylinder is fixedly installed on the surface of the U-shaped seat; a ball head is fixed on the telescopic end of the hydraulic cylinder; a plurality of spraying parts are slidably arranged on the slide rail; a sealing part is slidably arranged on the side of the C-shaped plate; an arc guide plate matched with the sealing part is fixed on the inner peripheral side of the arc-shaped mounting plate. The device continuously injects water into the blade to be repaired through a water inlet pipe, and water will be sprayed at the crack of the blade to be repaired. The staff moves each spraying part to the water spraying position in turn to complete the preliminary positioning of the crack of the blade to be repaired, and sprays the penetrant and the developer on the preliminary positioned position through the nozzle, so as to quickly and effectively detect the crack on the surface of the blade to be repaired, and effectively save the use of the penetrant and the developer.

Description

Technical Field

[0001] The invention relates to the technical field of wind turbine blade maintenance, and more particularly to a crack maintenance control system based on wind turbine blades. Background Art

[0002] Wind power generation uses wind energy to drive the blades of the wind turbine to rotate, accelerates the rotation speed of the shaft through a speed increaser, and transmits the rotation speed and torque of the shaft to the rotating shaft of the engine, thereby achieving its power generation effect. Under the existing technology, in order to maximize the kinetic energy effect brought by the wind, the blades of wind turbines are usually very large and have a hollow structure. During long-term use, cracks are easily generated on the surface of the blades of the wind turbine. The cracks connect the internal cavity of the blades with the outside air, which will affect the dynamic effect of the wind driving the blades to rotate.

[0003] Therefore, in order to make the cracked wind turbine blades continue to be used, the staff will use welding equipment to weld the cracks on the wind turbine blades. However, when the welding equipment under the existing technology is used to process the cracks on the wind turbine blades, due to the fact that the wind turbine blades are very large compared to the human body and the blades are too long, the traditional wind turbine blade crack welding equipment cannot quickly find the location of the blade cracks. Manual flaw detection requires a lot of labor and is inefficient, thereby reducing the efficiency of wind turbine blade crack repair. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a crack repair control system based on wind turbine blades, in which water is continuously injected into the blades to be repaired through a water inlet pipe, and water will be sprayed out from the cracks in the blades to be repaired. The staff will move each spraying part to the water spraying position in turn to complete the preliminary positioning of the cracks in the blades to be repaired, and the penetrant and developer will be sprayed on the preliminary positioned position through the nozzle, so as to quickly and effectively detect the cracks on the surface of the blades to be repaired, thereby ensuring the accuracy of the detection and effectively improving the detection efficiency. At the same time, the use of the penetrant and developer is effectively saved.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A crack repair control system based on wind turbine blades, comprising a welding frame and a blade to be repaired clamped on the welding frame; further comprising a support frame rotatably matched with the welding frame; the support frame comprises a support base; a U-shaped plate and a U-shaped seat are fixed to the surface of the support base in sequence; a rotating shaft is fixed between the inner walls of the U-shaped plate; a hydraulic cylinder is fixedly installed on the surface of the U-shaped seat; a ball head is fixed on the telescopic end of the hydraulic cylinder; the welding frame comprises a filter plate; a first vertical plate and a second vertical plate are respectively fixed on two opposite sides of the filter plate; an axial hole that is rotatably matched with the rotating shaft is opened on the side of the first vertical plate; a slide plate is slidably arranged on the surface of the filter plate; a slide rail is fixed on the side of the slide rail; a plurality of spraying parts are slidably arranged on the slide rail; a C-shaped plate is fixed on the side of the second vertical plate; a sealing member is slidably arranged on the side of the C-shaped plate; an arc-shaped mounting plate concentric with the rotating shaft is fixed on the surface of the support base; an arc-shaped guide plate adapted to the sealing member is fixed on the inner peripheral side of the arc-shaped mounting plate.

[0007] The present invention is further configured as follows: a driving motor is fixedly installed on the side of the first vertical plate; a screw is fixed on the output end of the driving motor; sliding rods are symmetrically fixed on the side of the first vertical plate on both sides of the screw; the slide plate is rotationally matched with the screw thread, and it is slidingly matched with the sliding rod; a storage box is fixedly installed on the side of the slide plate; an electric welding box is fixedly installed on the top of the storage box; a welding gun is stored in the storage box; a welding cable is electrically connected between the electric welding box and the welding gun.

[0008] The present invention is further configured as follows: a servo motor is fixedly installed on the side of the skateboard; a reducer is connected to the output end of the servo motor; the output end of the servo motor is connected to a connecting shaft that passes through the side of the skateboard through the reducer; a turntable is fixed to the end of the connecting shaft; a clamping sleeve that is compatible with the tail end of the blade to be repaired is fixed at an eccentric position on the side of the turntable.

[0009] The present invention is further configured as follows: a plurality of plug pins are fixed in a circular array at the root of the blade to be repaired; a mounting opening coaxially arranged with the turntable is provided on the side surface of the second vertical plate; a rotating ring rotatably arranged on the inner circumferential side surface of the mounting opening and rotatably matched with the root of the blade to be repaired; a positioning ring is fixed at one end of the rotating ring; and sockets that are plugged and matched with corresponding plug pins are evenly provided on the side surface of the positioning ring.

[0010] The present invention is further configured as follows: a sliding hole is opened on the side of the C-shaped plate; the sealing member includes a guide rod that slides with the sliding hole; a guide ball is provided at one end of the guide rod; a cover plate is fixed to the other end of the guide rod; a reset spring sleeved on the guide rod is fixedly connected between the C-shaped plate and the cover plate; a sealing plug that plugs and cooperates with the root of the blade to be repaired is fixed on the side of the cover plate; a water inlet pipe is penetrated through the side of the sealing plug; a first solenoid valve is provided on the water inlet pipe; and a pressure sensor is fixedly installed on the side of the cover plate.

[0011] The present invention is further configured as follows: a water collecting box is fixed on the surface of the support base; a water pump is fixedly installed in the water collecting box; an L-shaped water pumping pipe is provided at the water delivery end of the water pump, and a water collecting box is installed at its water delivery end; a first water outlet pipe and a second water outlet pipe are sequentially penetrated and connected on the surface of the water collecting box; the first water outlet pipe is connected to the water inlet pipe by a hose.

[0012] The present invention is further configured as follows: a plurality of blowers are fixedly installed between the second vertical plate and the filter plate; an electric heating wire is arranged at the air outlet of the blower; a first support plate is symmetrically and slidably arranged on both sides of the U-shaped seat, and a second support plate is slidably arranged on both side surfaces thereof above the corresponding first support plate at a certain inclined angle; a controller is fixedly installed on the outer peripheral side surface of the arc-shaped mounting plate; the input end of the controller is electrically connected to the pressure sensor, and the output end thereof is electrically connected to the drive motor, the servo motor, the hydraulic cylinder, the first solenoid valve, the water pump electric heating wire and the blower respectively.

[0013] The present invention is further configured as follows: two opposite sides of the slide rail are symmetrically provided with slide grooves; a plurality of positioning holes are distributed in a linear array on the surface of the slide rail; the spraying member includes a U-shaped block; guide rails that slide with the slide grooves are symmetrically fixed on both sides of the U-shaped block; a C-shaped block is fixed on the surface of the U-shaped block; a positioning rod that slides through the surface of the C-shaped block and plugs into the corresponding positioning holes is slidably provided; a stopper is fixed on the top of the positioning rod; a support spring mounted on the positioning rod is fixed between the stopper and the C-shaped block.

[0014] The present invention is further configured as follows: an arc-shaped connecting plate is fixed on the bottom surface of the U-shaped block; the first water pipe, the second water pipe and the third water pipe are fixedly installed on the inner peripheral side surface of the arc-shaped connecting plate in sequence; one end of the first water pipe, the second water pipe and the third water pipe are all sealed, and the peripheral side surfaces thereof are connected with nozzles; a clean water pipe, a penetrant pipe and a developer pipe are sequentially penetrated through the side surface of the slide plate; the clean water pipe, the penetrant pipe and the developer pipe are all provided with a second solenoid valve electrically connected to the output end of the controller; one end of the clean water pipe, the penetrant pipe and the developer pipe are all connected with a three-way pipe; the other ends of the clean water pipe, the penetrant pipe and the developer pipe are respectively connected to the external clean water delivery pipe, the penetrant delivery pipe and the developer delivery pipe through a hose; each of the three-way pipes is respectively connected to the corresponding first water pipe, the second water pipe and the third water pipe through a hose.

[0015] The advantages of the present invention are:

[0016] 1. The present invention uses external lifting equipment to lift the blade to be repaired between the second vertical plate and the slide plate, controls the slide plate to slide and clamps the blade to be repaired between the clamping sleeve and the positioning ring, thereby improving the stability of the crack repair process. At the same time, by controlling the rotation of the turntable, the positioning ring is driven to rotate synchronously with the blade to be repaired, thereby realizing the flipping of the blade to be repaired and improving the efficiency of subsequent welding.

[0017] 2. The present invention controls the hydraulic cylinder to rise and drives the welding frame together with the clamped blade to be repaired to rotate and rise. During the rotation and rising process, the guide ball slides along the arc guide plate, so that the sealing member slides along the C-shaped plate toward the blade to be repaired, until the sealing plug is inserted into the root of the blade to be repaired, thereby completing the sealing of the blade to be repaired. Water is continuously injected into the blade to be repaired through the water inlet pipe, and water will be sprayed out from the cracks of the blade to be repaired. The staff moves each spraying member to the water spraying position in turn to complete the preliminary positioning of the cracks of the blade to be repaired, and then controls the welding frame to rotate and descend. During this process, the sealing plug automatically separates from the root of the blade to be repaired, and the water in the blade to be repaired is poured out. The degree of automation is high, and the work efficiency is improved.

[0018] 3. The present invention controls the welding frame to rotate together with the blade to be repaired to a horizontal position, controls the start of the blower fan to air-dry the surface of the blade to be repaired, sprays the penetrant and the developer on the initially located position through the nozzle, and quickly and effectively detects the cracks on the surface of the blade to be repaired, thereby ensuring the accuracy of detection and effectively improving the detection efficiency, thereby improving the accuracy and efficiency of subsequent welding, and at the same time, effectively saving the use of penetrant and developer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of a crack repair control system based on wind turbine blades.

[0020] Figure 2 It is a schematic diagram of the structure of the present invention under crack repair state.

[0021] Figure 3 It is a structural schematic diagram of the welding frame of the present invention.

[0022] Figure 4 For the present invention Figure 3 A magnified image of area A.

[0023] Figure 5 For the present invention Figure 3 A magnified view of area B.

[0024] Figure 6 It is a structural schematic diagram of the welding frame of the present invention from another angle.

[0025] Figure 7It is a schematic structural diagram of the blade to be repaired according to the present invention.

[0026] Figure 8 It is a structural schematic diagram of the welding frame of the present invention and the blade assembly to be repaired.

[0027] Fig. 9 It is a schematic structural diagram of the support frame of the present invention.

[0028] Fig.10 For the present invention Fig. 9 Magnified view of area C.

[0029] Fig.11 It is a schematic structural diagram of the spraying member of the present invention.

[0030] Fig.12 It is a schematic structural diagram of the sealing member of the present invention.

[0031] Fig.13 It is a schematic structural diagram of the sealing member of the present invention from another angle.

[0032] Fig.14 It is a schematic diagram of the workflow of the present invention, wherein:

[0033] (a) is a schematic diagram of the structure in the crack repair state, (b) is a schematic diagram of the structure in the state of pouring out the water in the blade to be repaired, and (c) is a schematic diagram of the structure in the welding state.

[0034] In the figure: 1. welding frame; 2. blade to be repaired; 3. support frame; 4. support base; 5. U-shaped plate; 6. U-shaped seat; 7. rotating shaft; 8. hydraulic cylinder; 9. ball head; 10. filter plate; 11. first vertical plate; 12. second vertical plate; 13. shaft hole; 14. slide plate; 15. slide rail; 16. spraying member; 17. C-shaped plate; 18. sealing member; 19. arc-shaped mounting plate; 20. arc-shaped guide plate; 21. driving motor; 22. lead screw; 23. slide rod; 24. storage box; 25. welding box; 26. welding cable; 27. servo motor; 28. reducer; 29. ​​turntable; 30. snap sleeve; 31. plug pin; 32. mounting port; 33. rotating ring; 34. positioning ring; 35. socket; 36. slide hole; 37. guide rod; 38. guide ball; 39. Cover plate; 40. Return spring; 41. Sealing plug; 42. Water inlet pipe; 43. First solenoid valve; 44. Pressure sensor; 45. Water collecting box; 46. Water pump; 47. L-shaped water pipe; 48. Water collecting box; 49. First water outlet pipe; 50. Second water outlet pipe; 51. Blower; 52. First support plate; 53. Second support plate; 54. Controller; 55. Slide; 56. Positioning hole; 57. U-shaped block; 58. Guide rail; 59. C-shaped block; 60. Positioning rod; 61. Block; 62. Support spring; 63. Arc connecting plate; 64. First water pipe; 65. Second water pipe; 66. Third water pipe; 67. Nozzle; 68. Clean water pipe; 69. Penetrant tube; 70. Developer tube; 71. Second solenoid valve; 72. Three-way pipe. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0037] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0038] Embodiment 1

[0039] See also Figure 1-13 , the present invention provides the following technical solutions:

[0040] A crack repair control system based on a wind turbine blade, specifically, comprises a welding frame 1 and a blade 2 to be repaired clamped on the welding frame 1; further comprises a support frame 3 rotatably matched with the welding frame 1; the support frame 3 comprises a support base 4; a U-shaped plate 5 and a U-shaped seat 6 are fixed on the surface of the support base 4 in sequence; a rotating shaft 7 is fixed between the inner walls of the U-shaped plate 5; a hydraulic cylinder 8 is fixedly installed on the surface of the U-shaped seat 6; a ball head 9 is fixed on the telescopic end of the hydraulic cylinder 8; the welding frame 1 comprises a filter plate 10; first vertical plates are respectively fixed on two opposite sides of the filter plate 10 11. A second vertical plate 12; an axial hole 13 for rotationally cooperating with the rotating shaft 7 is opened on the side of the first vertical plate 11; a slide plate 14 is slidably arranged on the surface of the filter plate 10; a slide rail 15 is fixed on the side of the slide rail 14; a plurality of spraying members 16 are slidably arranged on the slide rail 15; a C-shaped plate 17 is fixed on the side of the second vertical plate 12; a sealing member 18 is slidably arranged through the side of the C-shaped plate 17; an arc-shaped mounting plate 19 which is concentric with the rotating shaft 7 is fixed on the surface of the support base 4; an arc-shaped guide plate 20 which is adapted to the sealing member 18 is fixed on the inner circumferential side of the arc-shaped mounting plate 19.

[0041] The working principle of the first embodiment is as follows: by continuously injecting water into the blade 2 to be repaired, water will be sprayed out from the cracks of the blade 2 to be repaired, and the staff will move each spraying member 16 to the water spraying position in turn to complete the preliminary positioning of the cracks of the blade 2 to be repaired, and the penetrant and the developer are sprayed on the preliminary positioned position by the spraying member 16, so as to quickly and effectively detect the cracks on the surface of the blade 2 to be repaired, thereby ensuring the accuracy of the detection and effectively improving the detection efficiency. At the same time, the use of the penetrant and the developer is effectively saved.

[0042] Embodiment 2

[0043] See also Figure 1-13, the second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a driving motor 21 is fixedly installed on the side of the first vertical plate 11; a screw rod 22 is fixed on the output end of the driving motor 21; sliding rods 23 are symmetrically fixed on the side of the first vertical plate 11 on both sides of the screw rod 22; the slide plate 14 is threadedly rotated with the screw rod 22, and it is slidingly matched with the sliding rod 23; a storage box 24 is fixedly installed on the side of the slide plate 14; a welding box 25 is fixedly installed on the top of the storage box 24; a welding gun is stored in the storage box 24; a welding cable 26 is electrically connected between the welding box 25 and the welding gun; a servo motor 27 is fixedly installed on the side of the slide plate 14; a reducer is connected to the output end of the servo motor 27 28; the output end of the servo motor 27 is connected to a connecting shaft that passes through the side of the slide plate 14 through a reducer 28; a turntable 29 is fixed to the end of the connecting shaft; a clamping sleeve 30 that matches the tail end of the blade 2 to be repaired is fixed at an eccentric position on the side of the turntable 29; a number of plug pins 31 are fixed in a circular array at the root of the blade 2 to be repaired; a mounting opening 32 that is coaxial with the turntable 29 is provided on the side of the second vertical plate 12; a rotating ring 33 that rotates with the root of the blade 2 to be repaired is rotatably provided on the inner circumferential side of the mounting opening 32; a positioning ring 34 is fixed to one end of the rotating ring 33; and sockets 35 that plug and match with the corresponding plug pins 31 are evenly provided on the side of the positioning ring 34.

[0044] The working principle of the second embodiment of the present invention is as follows: the blade 2 to be repaired is hoisted between the second vertical plate 12 and the slide plate 14 by an external hoisting device, the tail of the blade 2 to be repaired is aligned with the snap sleeve 30, the plug pin 31 at the root end of the blade 2 to be repaired is aligned with the corresponding socket 35, the drive motor 21 is controlled to start to drive the screw rod 22 to rotate, thereby driving the slide plate 14 to slide along the slide bar 23 toward the direction of the second vertical plate 12, and the blade 2 to be repaired is clamped and fixed between the snap sleeve 30 and the positioning ring 34, so as to improve the stability of the crack repair process; at the same time, the servo motor 27 is controlled to start and drive the turntable 29 to rotate slowly, thereby driving the positioning ring 34 to rotate synchronously with the blade 2 to be repaired, and the blade 2 to be repaired is flipped over, thereby improving the efficiency of subsequent welding; after completing the preliminary positioning of the crack and the subsequent accurate detection, the welding gun is taken out of the storage box 24 to weld the marked crack.

[0045] Embodiment 3

[0046] See also Figure 1-13, the third embodiment makes the following improvements on the basis of the second embodiment. Specifically, a sliding hole 36 is opened on the side of the C-shaped plate 17; the sealing member 18 includes a guide rod 37 that slides with the sliding hole 36; a guide ball 38 is provided at one end of the guide rod 37; a cover plate 39 is fixed to the other end of the guide rod 37; a return spring 40 sleeved on the guide rod 37 is fixedly connected between the C-shaped plate 17 and the cover plate 39; a sealing plug 41 that plugs and cooperates with the root of the blade 2 to be repaired is fixed on the side of the cover plate 39; a water inlet pipe 42 is provided through the side of the sealing plug 41; a first solenoid valve 43 is provided on the water inlet pipe 42; a pressure sensor 44 is fixedly installed on the side of the cover plate 39; a water collecting box 45 is fixed on the surface of the support base 4; a water pump 46 is fixedly installed in the water collecting box 45; an L-shaped water pumping pipe 47 is provided at the water delivery end of the water pump 46, and its water delivery end is installed A water collecting box 48; a first water outlet pipe 49 and a second water outlet pipe 50 are sequentially penetrated and connected on the surface of the water collecting box 48; the first water outlet pipe 49 is connected to the water inlet pipe 42 by a hose; a plurality of blowers 51 are fixedly installed between the second vertical plate 12 and the filter plate 10; an electric heating wire is arranged at the air outlet of the blower 51; first support plates 52 are symmetrically penetrated and slidably arranged on both sides of the U-shaped seat 6, and second support plates 53 are penetrated and slidably arranged on both side surfaces thereof at a certain inclined angle above the corresponding first support plates 52; a controller 54 is fixedly installed on the outer peripheral side of the arc-shaped mounting plate 19; the input end of the controller 54 is electrically connected to the pressure sensor 44, and the output end thereof is electrically connected to the drive motor 21, the servo motor 27, the hydraulic cylinder 8, the first solenoid valve 43, the electric heating wire of the water pump 46 and the blower 51 respectively.

[0047] The working principle of the third embodiment is as follows: by controlling the hydraulic cylinder 8 to rise, the ball head 9 pushes the filter plate 10 to rotate and rise around the rotating shaft 7, thereby driving the root of the blade 2 to be repaired to be set upward. During the process of the welding frame 1 rotating and rising, the guide ball 38 slides along the arc guide plate 20, so that the seal 18 slides along the C-shaped plate 17 toward the blade 2 to be repaired, until the sealing plug 41 is inserted into the root of the blade 2 to be repaired, completing the sealing of the blade 2 to be repaired. At this time, the pressure sensor 44 is against the rotating ring 33 and transmits the signal to the controller 54. The controller 54 controls the water pump 46 to start, and the water in the water collecting tank 45 is pumped through the L-shaped water pumping pipe 47. Water is continuously injected into the blade 2 to be repaired through the first water outlet pipe 49, the corresponding hose and the water inlet pipe 42 in sequence, and water will be sprayed out from the cracks of the blade 2 to be repaired. The staff will move each spraying member 18 to the water spraying position in sequence to complete the preliminary positioning of the cracks of the blade 2 to be repaired, and then control the welding frame 1 to rotate and descend. During this process, the sealing plug 41 is automatically separated from the root of the blade 2 to be repaired under the action of the reset spring 40, and the water in the blade 2 to be repaired is poured out. The degree of automation is high, and the work efficiency is improved. The first support plate 52 and the second support plate 53 are arranged to support and protect the welding frame 1 in the welding state and the preliminary positioning state respectively.

[0048] Embodiment 4

[0049] See also Figure 1-13 , the fourth embodiment of the present invention is improved as follows on the basis of the third embodiment. Specifically, two opposite sides of the slide rail 15 are symmetrically provided with slide grooves 55; a plurality of positioning holes 56 are distributed in a linear array on the surface of the slide rail 15; the spraying member 16 includes a U-shaped block 57; guide rails 58 that are slidably matched with the slide grooves 55 are symmetrically fixed on both sides of the U-shaped block 57; a C-shaped block 59 is fixed on the surface of the U-shaped block 57; a positioning rod 60 that is plugged and matched with the corresponding positioning hole 56 is slidably provided on the surface of the C-shaped block 59; a stopper 61 is fixed on the top of the positioning rod 60; a support spring 62 that is sleeved on the positioning rod 60 is fixed between the stopper 61 and the C-shaped block 59; an arc-shaped connecting plate 63 is fixed on the bottom surface of the U-shaped block 57; the first water pipe 64, the second water pipe 65 and the third water pipe 66 are fixedly installed on the inner peripheral side of the arc-shaped connecting plate 63 in sequence ; One ends of the first water pipe 64, the second water pipe 65 and the third water pipe 66 are all sealed, and the surrounding sides are connected with nozzles 67; the side of the slide plate 14 is penetrated by a clean water pipe 68, a penetrant pipe 69 and a developer pipe 70 in sequence; the clean water pipe 68, the penetrant pipe 69 and the developer pipe 70 are all provided with a second solenoid valve 71 electrically connected to the output end of the controller 54; one end of the clean water pipe 68, the penetrant pipe 69 and the developer pipe 70 is connected with a three-way pipe 72; the other ends of the clean water pipe 68, the penetrant pipe 69 and the developer pipe 70 are respectively connected to the external clean water delivery pipe, the penetrant delivery pipe and the developer delivery pipe through a hose; each three-way pipe 72 is respectively connected to the corresponding first water pipe 64, the second water pipe 65 and the third water pipe 66 through a hose.

[0050] The working principle of the fourth embodiment of the present invention is as follows: the stopper 61 is pulled upwards to disengage the corresponding positioning rod 60 from the corresponding positioning hole 56, and the corresponding support spring 62 is stretched to release the restriction on the spraying member 16. After each group of spraying members 16 is moved to the corresponding crack water spraying position in turn, the corresponding positioning rod 60 is driven to be inserted into the corresponding positioning hole 56 under the elastic restoring force of the support spring 62, thereby completing the preliminary positioning of the crack.

[0051] By controlling to open the second solenoid valve 71 on the clean water pipe 68, the external clean water delivery pipe delivers clean water to each corresponding first water delivery pipe 64 through the corresponding three-way pipe 72, and sprays it to the initially located crack position through the corresponding nozzle 67, so as to clean the gap of the blade 2 to be repaired, and clean the impurities and pollutants attached to the gap on the surface of the blade 2 to be repaired, so as to ensure the subsequent flaw detection processing; after the cleaning is completed, the blower 51 and the electric heating wire are controlled to start, and hot air is blown to the surface of the blade 2 to be repaired to accelerate its air drying efficiency.

[0052] After cleaning and air drying, the second solenoid valve 71 on the penetrant tube 69 is controlled to open to spray the penetrant into the crack preliminary positioning area. After the penetrant is fully penetrated, clean water is passed for a simple rinse. After the rinse is completed, hot air is blown dry. After completion, the second solenoid valve 71 on the developer tube 70 is controlled to open to spray the penetrant into the crack preliminary positioning area. The penetrant inspection is completed. At this time, the position of the crack will show a unique color, which can be manually observed and marked to facilitate subsequent further processing and operation of the crack.

[0053] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0055] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0057] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A crack repair control system based on a wind turbine blade, comprising a welding frame (1) and a blade to be repaired (2) clamped on the welding frame (1); characterized in that: It also includes a support frame (3) that is rotatably matched with the welding frame (1); the support frame (3) includes a support base (4); a U-shaped plate (5) and a U-shaped seat (6) are fixed to the surface of the support base (4) in sequence; a rotating shaft (7) is fixed between the inner walls of the U-shaped plate (5); a hydraulic cylinder (8) is fixedly mounted on the surface of the U-shaped seat (6); a ball head (9) is fixed to the telescopic end of the hydraulic cylinder (8); The welding frame (1) comprises a filter plate (10); a first vertical plate (11) and a second vertical plate (12) are respectively fixed to two opposite sides of the filter plate (10); a shaft hole (13) for rotationally cooperating with the rotating shaft (7) is opened on the side of the first vertical plate (11); a slide plate (14) is slidably arranged on the surface of the filter plate (10); a slide rail (15) is fixed to the side of the slide rail (14); and a plurality of spraying members (16) are slidably arranged on the slide rail (15); A C-shaped plate (17) is fixed to the side of the second vertical plate (12); a sealing member (18) is slidably provided through the side of the C-shaped plate (17); an arc-shaped mounting plate (19) coaxial with the rotating shaft (7) is fixed to the surface of the support base (4); an arc-shaped guide plate (20) adapted to the sealing member (18) is fixed to the inner circumferential side of the arc-shaped mounting plate (19); A sliding hole (36) is provided on the side of the C-shaped plate (17); the sealing member (18) comprises a guide rod (37) slidably matched with the sliding hole (36); a guide ball (38) is provided at one end of the guide rod (37); a cover plate (39) is fixed to the other end of the guide rod (37); a return spring (40) sleeved on the guide rod (37) is fixedly connected between the C-shaped plate (17) and the cover plate (39); a sealing plug (41) pluggably matched with the root of the blade (2) to be repaired is fixed on the side of the cover plate (39); a water inlet pipe (42) is provided through the side of the sealing plug (41); a first solenoid valve (43) is provided on the water inlet pipe (42); a pressure sensor (44) is fixedly mounted on the side of the cover plate (39); A water collecting box (45) is fixed on the surface of the support base (4); a water pump (46) is fixedly installed in the water collecting box (45); an L-shaped water pumping pipe (47) is provided at the water delivery end of the water pump (46), and a water collecting box (48) is installed at the water delivery end; a first water outlet pipe (49) and a second water outlet pipe (50) are sequentially penetrated and connected on the surface of the water collecting box (48); the first water outlet pipe (49) is connected to the water inlet pipe (42) via a hose; The slide rail (15) is symmetrically provided with slide grooves (55) on two opposite sides; the surface of the slide rail (15) is provided with a plurality of positioning holes (56) distributed in a linear array; the spraying member (16) comprises a U-shaped block (57); guide rails (58) slidably engaged with the slide grooves (55) are symmetrically fixed on both sides of the U-shaped block (57); a C-shaped block (59) is fixed on the surface of the U-shaped block (57); a positioning rod (60) slidably engaged with the corresponding positioning hole (56) is slidably provided on the surface of the C-shaped block (59); a stopper (61) is fixed on the top of the positioning rod (60); a support spring (62) sleeved on the positioning rod (60) is fixed between the stopper (61) and the C-shaped block (59); An arc-shaped connecting plate (63) is fixed to the bottom surface of the U-shaped block (57); a first water pipe (64), a second water pipe (65) and a third water pipe (66) are fixedly mounted on the inner circumferential side surface of the arc-shaped connecting plate (63) in sequence; one end of the first water pipe (64), the second water pipe (65) and the third water pipe (66) are all sealed, and a nozzle (67) is connected to the circumferential side surface thereof; a clean water pipe (68), a penetrant pipe (69) and a developer pipe (70) are sequentially penetrated through the side surface of the slide plate (14); the clean water pipe (68), the penetrant pipe (69) and the developer pipe (70) are The developer tube (70) is provided with a second solenoid valve (71) electrically connected to the output end of the controller (54); one end of the clean water tube (68), the penetrant tube (69) and the developer tube (70) is connected to a three-way tube (72); the other ends of the clean water tube (68), the penetrant tube (69) and the developer tube (70) are connected to an external clean water delivery tube, a penetrant delivery tube and a developer delivery tube respectively through a hose; each of the three-way tubes (72) is connected to the corresponding first water delivery tube (64), the second water delivery tube (65) and the third water delivery tube (66) through a hose; The stopper (61) is pulled upwards to disengage the corresponding positioning rod (60) from the corresponding positioning hole (56), and the corresponding support spring (62) is stretched to release the restriction on the spraying member (16). After each group of spraying members (16) is moved to the corresponding crack spraying position in sequence, the user is released. Under the elastic reset force of the support spring (62), the corresponding positioning rod (60) is driven to be inserted into the corresponding positioning hole (56), thereby completing the preliminary positioning of the crack. By controlling to open the second solenoid valve (71) on the clean water pipe (68), the external clean water delivery pipe delivers clean water to each corresponding first water delivery pipe (64) through the corresponding three-way pipe (72), and sprays the clean water to the initially located crack position through the corresponding spray head (67). The gap of the blade to be repaired (2) is cleaned, and impurities and contaminants attached to the gap on the surface of the blade to be repaired (2) are cleaned to ensure subsequent flaw detection processing; the second electromagnetic valve (71) on the penetrant tube (69) is controlled to open to spray the penetrant into the crack preliminary positioning area, and after the penetrant is fully penetrated, clean water is passed for simple rinsing, and hot air is blown dry after the rinsing is completed. After completion, the second electromagnetic valve (71) on the developer tube (70) is controlled to open to spray the penetrant into the crack preliminary positioning area, and the flaw detection is completed. At this time, the position of the crack will show a unique color, and artificial observation and marking of the crack are carried out, which is convenient for subsequent further processing and operation of the crack.

2. A crack repair control system based on wind turbine blades according to claim 1, characterized in that: A driving motor (21) is fixedly mounted on the side of the first vertical plate (11); a lead screw (22) is fixed to the output end of the driving motor (21); sliding rods (23) are symmetrically fixed to the side of the first vertical plate (11) on both sides of the lead screw (22); the slide plate (14) is threadedly engaged with the lead screw (22) and is slidingly engaged with the sliding rod (23); a storage box (24) is fixedly mounted on the side of the slide plate (14); an electric welding box (25) is fixedly mounted on the top of the storage box (24); a welding gun is stored in the storage box (24); and a welding cable (26) is electrically connected between the electric welding box (25) and the welding gun.

3. A crack repair control system based on wind turbine blades according to claim 2, characterized in that: A servo motor (27) is fixedly mounted on the side of the slide plate (14); the output end of the servo motor (27) is connected to a reducer (28); the output end of the servo motor (27) is connected to a connecting shaft penetrating the side of the slide plate (14) via the reducer (28); a rotating disk (29) is fixed to the end of the connecting shaft; and a clamping sleeve (30) adapted to the tail end of the blade to be repaired (2) is fixed at an eccentric position on the side of the rotating disk (29).

4. A crack repair control system based on wind turbine blades according to claim 3, characterized in that: A plurality of plug pins (31) are fixedly arranged in a circular array at the root of the blade to be repaired (2); a mounting opening (32) coaxially arranged with the rotating disk (29) is provided on the side of the second vertical plate (12); a rotating ring (33) rotatably arranged on the inner circumferential side of the mounting opening (32) for rotationally cooperating with the root of the blade to be repaired (2); a positioning ring (34) is fixedly arranged at one end of the rotating ring (33); and plug holes (35) for plugging and cooperating with corresponding plug pins (31) are uniformly provided on the side of the positioning ring (34).

5. A crack repair control system based on wind turbine blades according to claim 4, characterized in that: A plurality of blowers (51) are fixedly installed between the second vertical plate (12) and the filter plate (10); an electric heating wire is arranged at the air outlet of the blower (51); first support plates (52) are symmetrically and slidably arranged on both sides of the U-shaped seat (6), and second support plates (53) are slidably arranged on both sides thereof above the first support plates (52) at a certain inclined angle; A controller (54) is fixedly mounted on the outer peripheral side of the arc-shaped mounting plate (19); an input end of the controller (54) is electrically connected to the pressure sensor (44), and an output end thereof is electrically connected to the drive motor (21), the servo motor (27), the hydraulic cylinder (8), the first solenoid valve (43), the electric heating wire of the water pump (46), and the blower (51).

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