Blade maintenance process

Abstract

The invention provides a blade maintenance process. The blade maintenance process comprises the following steps that S1, finished films in various shapes are configured; s2, according to a to-be-maintained part on the surface of the blade, analyzing and selecting the type and the number of required finished product films, and analyzing whether the films need to be customized or not; s3, the selected finished film is placed in a corresponding area of the to-be-maintained part, and repairing combination operation is carried out; when only the customized film is needed, the customized film is formed through cutting, and the customized film is placed on the to-be-repaired part for repairing operation; and when a customized film and a finished film are needed at the same time, the customized film is formed through cutting, and the customized film and the selected finished film are both arranged in the corresponding areas of the to-be-repaired part for repairing operation. The process can reduce the maintenance cost and improve the maintenance efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of blade repair, and in particular to a blade repair process. Background Art

[0002] A wind turbine generator set includes a tower and a nacelle at the top of the tower. A generator is installed inside the nacelle. Blades are connected to the hub outside the nacelle. When the blades rotate, the generator generates electricity. When the surface of the blades is damaged, it will affect the normal operation of the blades and then affect the power generation function of the unit. Therefore, it is necessary to repair the surface of the blades with a repair film. At present, the repair of damaged parts is to apply a film according to the shape of the damaged parts, which has high repair costs and low maintenance efficiency. Summary of the invention

[0003] The purpose of this application is to provide a blade maintenance process that can reduce maintenance costs and improve maintenance efficiency.

[0004] The present application provides a blade repair process, comprising the following steps:

[0005] S1. Configure finished films in various shapes;

[0006] S2. Analyze and select the type and quantity of finished film required according to the part to be repaired on the blade surface, and analyze whether a customized film is needed;

[0007] S3, placing the selected finished film in the corresponding area of ​​the part to be repaired, and performing a repair and combination operation; when only a customized film is needed, cutting to form a customized film, and placing the customized film in the part to be repaired for repair operation; when both a customized film and a finished film are needed, cutting to form the customized film, and placing both the customized film and the selected finished film in the corresponding area of ​​the part to be repaired, and performing a repair operation.

[0008] Optionally, in step S2, a model is established according to the part to be repaired, and a plurality of the finished films are substituted into the model of the part to be repaired. With the goal of minimizing the usage of the finished films, iterative calculations are performed to obtain the required types and quantities of the finished films.

[0009] Optionally, the portion to be repaired is polished so that the polished portion to be repaired is matched and docked with the finished film or the customized film.

[0010] Optionally, projection is performed on the part to be repaired, and the projection of the part to be repaired is located within the projection of the finished film. When the area of ​​the finished film not covering the part to be repaired is smaller than a predetermined proportion of the area of ​​the part to be repaired, the part to be repaired is polished to match the finished film.

[0011] Optionally, the finished film is cut to form the customized film.

[0012] Optionally, the portion to be repaired in step S2 is obtained by the following method: an image of the surface of the blade is captured to obtain the portion to be repaired.

[0013] Optionally, at least one of the noise and acceleration of the blade is monitored, and when either the noise or the acceleration is abnormal, the part to be repaired is determined in combination with the image taken by the camera.

[0014] Optionally, a three-dimensional model of the blade is established, coordinates of the part to be repaired in the three-dimensional model are obtained, and according to the coordinates, the finished film and the customized film are controlled to move to a corresponding area of ​​the part to be repaired.

[0015] Optionally, a database is established, wherein the database stores parameters of different types of finished membranes and a repair operation time of a single finished membrane;

[0016] In step S2, the repair time required for one or more parts to be repaired is determined according to the type and quantity of the selected finished film, the operation window time is determined according to the current weather, and one or more parts to be repaired that match the operation window time are selected, or the operation is stopped and waits for the next operation window time.

[0017] Optionally, the type of the repaired part and the repair data are stored, and based on the stored data, a preliminary judgment is made on the type and quantity of the finished membrane to be selected and whether a customized membrane is needed before step S2, and then step S2 is entered or step S3 is performed directly.

[0018] In this application, finished films are prepared to carry out modular repairs on the parts to be repaired, that is, according to the regional analysis of the parts to be repaired, the finished films are directly used for the repair of the blades, and customized films are used as a supplement, which can effectively reduce costs. If a special-shaped film with the same shape as the part to be repaired is directly cut from a larger repair film according to the part to be repaired, there will be a lot of scraps that cannot be reused, resulting in a waste of materials. However, modular repairs are carried out on the parts to be repaired, and the finished films are used directly. The auxiliary customized films require a small area and will not produce much scraps, which can save materials, reduce costs, and also improve the repair efficiency. Moreover, the repair is mainly carried out through finished films, which can be prefabricated and stored in advance, which can meet the general and customized needs of different blade coatings, and can also meet the repair needs of blades from different manufacturers. In addition, since finished films are used, they can be repaired directly after polishing, or repaired with customized films, and the efficiency is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a flow chart of the blade maintenance process in the embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the first finished film in this embodiment, which is a rectangular finished film;

[0021] Figure 3 is a schematic diagram of the second finished film in this embodiment, which is a circular finished film;

[0022] Figure 4 is a schematic diagram of the third finished film in this embodiment, which is an elliptical finished film;

[0023] Figure 5 A schematic diagram of the adaptation of a part to be repaired and a finished film;

[0024] Figure 6 A schematic diagram of the cooperation between the repaired part of another blade and the first finished film;

[0025] Figure 7 is a schematic diagram of two wind turbines connected by cables;

[0026] Figure 8 for Figure 7 A schematic diagram of a wind turbine generator set with a blade to be repaired rotated to a horizontal position;

[0027] Fig. 9 for Figure 8 Enlarged view of the B area;

[0028] Fig.10 This is a schematic diagram of a blade repair tool in an embodiment of the present application;

[0029] Fig.11 for Fig.10 Explosion diagram of

[0030] Fig.12 for Fig.11 Schematic diagram of the cutting tool;

[0031] Fig.13 This is a schematic diagram of a blade repair tool approaching a part to be repaired in an embodiment of the present application;

[0032] Fig.14 A schematic diagram of a blade maintenance tool being moved to the position directly above the part to be repaired;

[0033] Fig.15 for Fig.14 Magnified view of area A.

[0034] The reference numerals in the above drawings are described as follows:

[0035] 100-blade maintenance tool; 101-frame; 1011-top plate; 1012-bottom plate; 1012a-dropping hole; 1013-column; 102-diaphragm support platform; 103-cutting tool; 1031-cutting blade; 1032-third drive unit; 1033-X-axis track; 104-dust suction device; 105-crawling device; 106-moving mechanism; 1061-first track; 1062-second track; 1063-first drive unit; 1064-second drive unit; 107-storage device;

[0036] 200-blade; 201-part to be repaired;

[0037] 301-first finished film; 302-second finished film; 303-third finished film;

[0038] 400 - engine room;

[0039] 500-tower;

[0040] 600-Lifting device;

[0041] 700-sensor assembly;

[0042] 800-Camera. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] The embodiment of the present application provides a blade repair process for repairing a damaged portion of a blade 200 , and the damaged portion is uniformly defined as a “portion to be repaired 201 ” in this document.

[0045] Please refer to Figure 1 , Figure 1 This is a flow chart of the blade maintenance process in an embodiment of the present application.

[0046] This embodiment provides a blade 200 maintenance process, and the blade 200 maintenance process mainly includes the following steps:

[0047] Step S1, configuring finished films of various shapes;

[0048] It should be emphasized that, in the present embodiment, the repair membrane for repairing the part 201 to be repaired is a finished membrane, which is a unit membrane designed according to the usual requirements for repairing the blade 200, that is, the size of the finished membrane cannot be too large, so as not to exceed the area of ​​most of the parts 201 to be repaired and need to be cut, nor should it be too small to increase the workload of repair and joining due to the large number. At the same time, the size of the finished membrane must also take into account the needs of storage and transportation. The finished membrane can be set to a 40cm*40cm square, for example. Considering that the shape of the part 201 to be repaired is usually irregular, the finished membrane can include more than two specifications, such as a 40cm*20cm rectangle, an ellipse with a major axis of 20cm and a minor axis of 10cm, etc.

[0049] Can be combined Figure 2-4 understand, Figure 2 is a schematic diagram of the first finished film 301 in this embodiment, which is a rectangular finished film; Figure 3 is a schematic diagram of a second finished film 302 in this embodiment, which is a circular finished film; Figure 4 Schematic diagram of the third finished film 303 in this embodiment, which is an elliptical finished film.

[0050] Before maintenance, the required finished film is selected according to the shape of the part 201 to be repaired. For a smaller part 201 to be repaired, one finished film is sufficient, and for a larger part 201 to be repaired, multiple finished films may be prepared.

[0051] Step S2: Analyze and select the type and quantity of the finished film required according to the part 201 to be repaired on the surface of the blade 200, and analyze whether a customized film is required;

[0052] Step S3, repairing by customized membrane includes the following three methods:

[0053] Placing the selected finished film in the corresponding area of ​​the part to be repaired 201 to perform a repair and bonding operation;

[0054] When only a customized film is needed, the customized film is cut and formed, and the customized film is placed on the part to be repaired 201 for repair operation;

[0055] When both a customized film and a finished film are needed, the customized film is cut and formed, and both the customized film and the selected finished film are placed in corresponding areas of the part to be repaired 201 to perform the repair operation.

[0056] like Figure 5 As shown, Figure 5 It is a schematic diagram of the adaptation of the part to be repaired 201 and the finished film.

[0057] like Figure 5As shown, according to the area and shape of the part to be repaired 201, three areas can be divided from left to right, each area is still irregular, and a finished film is selected for each area. The first finished film 301 can be selected for the left area. The first finished film 301 basically covers the main part of the left area. Since it is irregular, any finished film cannot be adapted. Therefore, according to the part to be repaired 201, a film shape other than the finished film required to cover the part to be repaired 201 can be determined. Figure 5 In the figure, the left area of ​​the part to be repaired 201 is covered by the first finished film 301, and also includes the first special-shaped area 201A, the second special-shaped area 201B, and the third special-shaped area 201C; the middle area can also use a first finished film 301, and then also include the fourth special-shaped area 201D and the fifth special-shaped area 201E; the right area can use a circular second finished film 302, and then also include the sixth special-shaped area 201F, the seventh special-shaped area 201G, and the eighth special-shaped area 201H, wherein the fourth special-shaped area D and the eighth special-shaped area 201H, the fifth special-shaped area E and the sixth special-shaped area F are actually continuous together and can be used as a special-shaped area, but due to the presence of a large corner, it is easy to cause waste during cutting, so it can also be divided into small unit areas and cut separately, so that the finished film can be cut by the cutting tool 103 to form a customized film with the same shape and size as each special-shaped area.

[0058] More specifically, if Figure 6 As shown, Figure 6 It is a schematic diagram of the cooperation between the to-be-repaired portion 201 of another blade 200 and the first finished film 301 .

[0059] Figure 5 The outer contour of each first finished film 301 is located within the contour of the part to be repaired 201. For some smaller or partially smaller parts to be repaired 201, when one finished film cannot be completely placed in the part to be repaired 201, Figure 6Compared with the first finished film 301, the first finished film 301 has a first redundant area 301A and a second redundant area 301B compared with the part to be repaired 201, that is, when projected onto the part to be repaired 201, the projection of the part to be repaired 201 is located within the projection of the finished film. At this time, when the part to be repaired 201 is polished, the local position can be polished and expanded to enclose the first finished film 301, which is equivalent to "partially expanding" the part to be repaired 201, so that a finished film fits the part to be repaired 201 after the partial expansion, without cutting the finished film. Of course, this local expansion method is only the result of a trade-off between repair efficiency and reduction of damaged surface. As mentioned above, the size of the finished film is a small unit film designed according to the usual damage repair requirements. Generally speaking, a single finished film can be placed in the repaired part 201 to be repaired. Only in a few cases, the repaired part 201 can be "expanded" very little to use the finished film directly, and efficient repair is achieved under the premise of a small expansion of the repaired part 201. A preset ratio can be set, and only when the area of ​​the finished film not covering the repaired part 201 is less than a predetermined ratio of the area of ​​the repaired part 201, the expansion grinding is performed to match the finished film.

[0060] certainly, Figure 6 In this case, the first finished film 301 can also be cut directly to match the part to be repaired 201, which is equivalent to forming a customized film.

[0061] It should be noted that the blade 200 is generally a multi-layer film structure, and the finished film used as the repair film in this embodiment is not a single-layer structure. Figure 2-4 It is understood that the three finished films are also multi-layer structures, similar to the slice structure of the blade 200. If the finished film is set to be multi-layer, when repairing the part 201 of the blade 200 to be repaired, it is easy to have a high degree of fit with the original structure of the damaged position, and the repair restoration is good. The damage to the blade 200 generally does not exceed three layers, so a piece of repair film can be attached to the part 201 to be repaired. For example, for scratches such as scrapes, and for the part 201 to be repaired with deeper damage, such as lightning strikes, the damage may be deeper, then two or more repair films can be laid in the same area according to needs, and the number of superimposed layers meets the damage depth requirements. When the finished film is set to be multi-layer, the edge side of the finished film presents a slope, such as Figure 4-6 As shown, this can increase the contact area between each layer of the finished film and each layer of the part to be repaired 201, and improve the reliability of the repair connection. Of course, the number of layers of the finished film is not limited to the same, and single-layer repair film, double-layer repair film, triple-layer repair film, etc. can be produced to match according to the repair requirements.

[0062] This embodiment also provides a blade maintenance device, including a blade maintenance tool 100, which is used to specifically perform the above-mentioned repair operation. The blade maintenance tool 100 will be introduced below and will not be described in detail here.

[0063] Look again Figure 7-9 , Figure 7 is a schematic diagram of two wind turbines connected by cables; Figure 8 for Figure 7 A schematic diagram of a wind turbine generator set with a blade to be repaired rotated to a horizontal position; Fig. 9 for Figure 8 Magnified view of area B.

[0064] like Fig. 9 As shown, the blade maintenance equipment may include a monitoring system, and the monitoring system may include a camera 800. The camera 800 is arranged on the top of the nacelle 400. The camera 800 can shoot the surface of the blade 200 to determine the part 201 to be repaired of the blade 200. When the camera 800 analyzes the captured image and finds that there is a damaged part on the surface of the blade 200 and needs to be repaired, the shape and size of the part 201 to be repaired can be determined according to the damaged part to determine how to select the finished film and how to cut to form the required customized film. It should be noted that the camera 800 can shoot the damage of its own blade 200, and can also shoot the damage of the blade 200 of the adjacent wind turbine generator set. The camera 800 of this wind turbine generator set can better observe the whole picture of the blade 200, such as the blade 200 is broken, or the detection data is abnormal, while the camera 800 of the adjacent wind turbine generator set can observe the local and observe more carefully. The two detection image data can be verified and compared with each other to ensure accurate monitoring.

[0065] Furthermore, the monitoring system may also include at least one of an audio sensor for detecting the noise of the blade 200 and an acceleration sensor for detecting the acceleration of the blade 200, so as to determine the part to be repaired 201 in combination with the camera 800, such as Figure 5The sensor assembly shown includes an audio sensor and an acceleration sensor. When the blade 200 is damaged and needs to be repaired, the noise of the blade 200 during operation will change significantly, and the operating speed of the blade 200 will also be abnormal. As long as the data detected by at least one of the audio sensor and the acceleration sensor is abnormal, it indicates that the surface of the blade 200 may be damaged and affect the normal operation of the blade 200. Of course, the abnormal data detected by the audio sensor and the acceleration sensor may also be caused by other reasons, such as abnormalities in the variable pitch system and the yaw system, or overheating and vibration of the bearing connected to the blade 200. At this time, further judgment and analysis can be carried out in combination with the camera 800, that is, the camera 800 does not need to be monitored all the time, which can reduce the requirements for the camera 800 and reduce costs. At this time, the camera can also be a drone, etc., which does not need to be fixed on the wind turbine generator set, and can be shot when there is a monitoring demand.

[0066] Accordingly, in the above step S2, when the finished film is selected, the monitoring system can monitor the status of the blade 200. When the monitoring system detects that the blade 200 needs to be repaired, it prompts that the repair operation needs to be performed. In addition, the type and quantity of the finished film required can be determined according to the size and shape of the monitored part 201 to be repaired, and at the same time, it can be determined whether a customized film is required in addition to the finished film, and the specific shape and size of the customized film, so that the selected finished film and the customized film fit the part 201 to be repaired after splicing.

[0067] Specifically, when repairing the blade 200, in order to facilitate the stable operation of the blade repair tool 100, the blade 200 to be repaired can be rotated to a horizontal position, and the part 201 to be repaired of the blade 200 can be rotated upward, and the blade repair tool 100 can crawl from the root of the blade 200 to the part 201 to be repaired. It can be seen that the blade repair tool 100 is not limited to repairing in a horizontal position, and the blade can be in any position. For example, if the blade 200 to be repaired is in a vertical direction, the blade repair tool 100 can also crawl along the vertical direction, and the blade repair tool 100 can be adsorbed on the blade 100.

[0068] According to the shape and size of the monitored part to be repaired 201, the specific method of determining the finished film is as follows:

[0069] A database can be established, in which the shape and size parameters of different types of finished films are stored, and a model of the image of the part to be repaired 201 is established. To establish an image model of the part to be repaired 201, the coordinates can be used to identify points, and then connected into surfaces and regions to obtain an image model, and then the finished films in stock are automatically matched, and the part to be repaired 201 is accurately located and divided according to the principle of minimum usage. Specifically, the sizes of several finished films are substituted into the model, and multiple rounds of iterative calculations are performed with the goal of minimizing the usage of the finished films to determine the finished film that is more suitable for the part to be repaired 201, that is, on a fixed area, with the goal of using as much material as possible, to achieve the optimal solution, automatically solve, and obtain the type and quantity of the required finished film. This iterative calculation can be performed through a set program, and the iterative calculation itself belongs to conventional technology, which will not be discussed here.

[0070] Furthermore, the database specifically contains the coordinates of different blades 200 and the information of the film thickness of the blade 200. When the blade 200 needs to be repaired, the corresponding blade 200 is found in the database. Then, the set software program can automatically virtual model according to the selected blade 200, that is, establish a three-dimensional model of the blade 200, and combine the position of the part to be repaired 201 on the blade 200 obtained by the monitoring system. Through the position and point of coordinate movement, the corresponding part to be repaired 201 is established in the virtual three-dimensional model, that is, the coordinates of the part to be repaired 201 in the three-dimensional model can be obtained, which is similar to the three-dimensional scanning modeling function. After the digital model of the part to be repaired 201 is established in the three-dimensional model of the blade 200, the parameter information of the finished film can be read, substituted into the part to be repaired 201, and iterative calculation is performed to perform the optimal calculation, and the required amount of each finished mold is obtained. The single amount of each finished film has a fixed cost, which can also be stored in the database. Then, according to the usage of the finished film, it can be equivalently converted into a repair cost.

[0071] At this time, on the one hand, the type and quantity of the finished film can be selected according to the model of the part to be repaired 201 in the three-dimensional model, and on the other hand, the three-dimensional coordinate relationship between the part to be repaired 201 and the blade 200 can be established, so that the blade repair tool 100 can be controlled to move accurately to the part to be repaired 201.

[0072] In addition, the blade 200 repair method in this embodiment is also convenient for determining the operation window time. After determining the number and type of finished film required, the usage and cost data of a single finished film can be calculated, and the repair operation time required for each finished film in the repair process can also be accurately calculated. At this time, according to the weather data input, for example, through virtual digital modeling, the time required for each part to be repaired 201 under the current meteorological environment and the operable window time under the current meteorological environment can be calculated.

[0073] For example, after identifying the images taken by the monitoring system, multiple parts to be repaired 201 are obtained, one of which takes 8 hours to repair, and the other takes 5 hours to repair. If the operating window time allowed by the weather is only 6 hours, the part to be repaired 201 with 5 hours can be repaired first. If the operating window time exceeds 8 hours, the part to be repaired 201 with 8 hours of repair is given priority, and the fragmented time can be used to the greatest extent for the grinding and repair functions of the blade 200. If the operating window time is less than the shortest required repair time, for example, the repair takes 5 hours, and the operating window time is only 3 hours, the repair is suspended and waits for the next window period to ensure the safety of the operation. Usually, there are many areas where the blade 200 needs to be repaired. Through the method in this embodiment, the optimal time allocation can be performed according to the virtual model of digital modeling to maximize the maintenance efficiency. Especially for areas where the offshore window period is seriously insufficient, such as the Guangdong and Fujian waters of my country, blade maintenance is greatly affected by the weather. Through this embodiment, reasonable planning time allocation can be made.

[0074] Please refer to Figure 10-12 , Fig.10 A schematic diagram of a blade repair tool 100 in an embodiment of the present application; Fig.11 for Fig.10 Explosion diagram of Fig.12 for Fig.11 Schematic diagram of the cutting tool 103.

[0075] The blade repair tool 100 in this embodiment includes a frame 101 , a cutting tool 103 , a diaphragm support platform 102 and a moving mechanism 106 . Figure 1 In the figure, the frame 101 is roughly a three-dimensional frame structure, including a bottom plate 1012 and a top plate 1011, which are connected by a column 1013. The frame 101 is mainly used as a base for installing other components of the blade maintenance tooling 100. Its specific structure is not limited to a three-dimensional frame structure. For example, it can be set as a closed shell shape, which is not limited in this embodiment.

[0076] The diaphragm support platform 102 of the blade repair tool 100 is arranged on the frame 101. The diaphragm support platform 102 is used to place the repair film of the blade 200. The diaphragm support platform 102 can be fixed to the frame 101 separately, or it can be an integrated structure with the frame 101. In this embodiment, the diaphragm support platform 102 can move relative to the frame 101, so the diaphragm support platform 102 is separated and independently arranged from the frame 101.

[0077] The cutting tool 103 of the blade repair tool 100 is used to cut the repair film, that is, it can cut the above-mentioned finished film. The cutting tool 103 can cut the repair film on the membrane support platform 102 according to the required repair film size, shape and other requirements to obtain a repair film of the required size and shape.

[0078] The moving mechanism 106 of the blade repair tool 100 is arranged on the frame 101, and the moving mechanism 106 is used to drive the cutting tool 103 and the diaphragm support platform 102 to move relative to each other, so as to adjust the position of the cutting tool 103. In the present embodiment, the moving mechanism 106 specifically includes a first track 1061 and a second track 1062. The diaphragm support platform 102 can move along the first track 1061, and the cutting tool 103 can move along the second track 1062. The first track 1061 and the second track 1062 are perpendicular to each other. The extension direction of the first track 1061 is defined as the X direction, and the extension direction of the second track 1062 is defined as the Y direction. The number of the first track 1061 and the second track 1062 are both two parallel to each other. In this way, the two first tracks 1061 can relatively stably support the diaphragm support platform 102, and the two second tracks 1062 can relatively stably support the cutting tool 103. At this time, the second track 1062 is erected on the first track 1061 and the diaphragm support platform 102. Fig.10 , 11 As a viewing angle, the relative position of the cutting tool 103 and the diaphragm support platform 102 can be adjusted arbitrarily in the XY plane, so as to facilitate the cutting tool 103 to cut the repair film. It can be seen that the relative movement of the diaphragm support platform 102 and the cutting tool 103 is not limited to this. For example, the diaphragm support platform 102 can also be fixed to the frame 101, and the second track 1062 is movably set relative to the first track 1061, so that the cutting tool 103 can move in the X and Y directions, and the movement effect achieved by the above method is the same. However, the diaphragm support platform 102 is set on the first track 1061, and the second track 1062 can be set on the first track 1061 and the diaphragm support platform 102, so as to save space.

[0079] The moving mechanism 106 may further include a first driving unit 1063 and a second driving unit 1064. The first driving unit 1063 is used to drive the diaphragm support platform 102 to move along the first track 1061, and the second driving unit 1064 is used to drive the cutting tool 103 to move along the second track 1062. The first driving unit 1063 and the second driving unit 1064 may be Figure 2 The motor and threaded screw assembly shown in the figure, the motor drives the screw to rotate to drive the nut to move in a straight line, the diaphragm support platform 102 and the cutting tool 103 are connected to the corresponding nuts, so as to move along the corresponding first track 1061 or the second track 1062.

[0080] It is worth mentioning that the cutting tool 103 includes a cutting blade 1031 and a position adjustment mechanism. The position adjustment mechanism can adjust the position of the cutting blade 1031. Fig.12 The position adjustment mechanism includes a Z-direction guide rail (located on the back of the cutting blade 1031, not shown) and an X-direction guide rail 1033, which can be adjusted in the Z direction and the X direction. Compared with the above-mentioned moving mechanism 106, the position adjustment mechanism of the cutting tool 103 can further achieve fine adjustment. The above-mentioned moving mechanism 106 is conducive to the rapid movement of the cutting tool 103, and the accuracy can reach the millimeter level. The adjustment accuracy of the position adjustment mechanism of the cutting tool 103 can be higher. The driving part of the position adjustment mechanism can also be a motor and a screw nut assembly, Fig.12 The third driving unit 1032 in the X direction is shown in FIG.

[0081] Look again Fig.10 In this embodiment, the rack 101 is also provided with a blanking hole 1012a, which is arranged at the bottom of the rack 101, and the repair film can fall from the blanking hole 1012a to the part 201 to be repaired of the blade 200. In this way, when the blanking hole 1012a of the rack 101 is located directly above the part 201 to be repaired of the blade 200, the repair film falls from the blanking hole 1012a into the part 201 to be repaired, and the repair film and the blade 200 can be subjected to corresponding joint repair operations to achieve the purpose of repair. The rack 101 can carry a repair actuator, such as a laser welder or a melting actuator, to connect the edge of the repair film to the corresponding position of the part 201 to be repaired of the blade 200. It can be seen that the repair of the blade 200 only requires pasting the repair film and the edge interface of the part 201201 to be repaired, which can largely achieve rapid repair, similar to the patching process.

[0082] Please continue to refer to Figure 13-15 , Fig.13 This is a schematic diagram of a blade repair tool 100 approaching a part to be repaired in an embodiment of the present application; Fig.14 It is a schematic diagram of the blade maintenance tool 100 moving to the position just above the part 201 to be maintained; Fig.15 for Fig.14 In the enlarged view of the portion A, the outer contour of the portion to be repaired 201 is indicated by a dotted line, which is the outer contour of the portion to be repaired 201 shown in FIG. 5 .

[0083] It is worth noting that the blanking hole 1012a in this embodiment can be used as a grinding hole, that is, when the blanking hole 1012a of the frame 101 is located at the part to be repaired 201, the position of the blanking hole 1012a can be polished by a grinding tool. On the one hand, the grinding tool makes it easier to bond and repair the part to be repaired 201 with the repair film, and on the other hand, it can make the local shape of the part to be repaired 201 fit the repair film. That is, the blanking hole 1012a can be set to be the same as the shape and size of the corresponding finished film, such as Fig.10 As shown, the blanking holes 1012a can be set to be multiple, so as to correspond to the shapes and sizes of various finished films. For example, when the first finished film 301 is needed, the blanking hole 1012a corresponding thereto is aligned with the repaired part where the first finished film 301 needs to be laid, and the grinding tool is used to grind at the blanking hole 1012a position. After that, the corresponding finished film falls from the blanking hole 1012a, and can match the size and shape of the position area, and also adapt to the number of layers of the blades 200 in the position area, that is, a matching docking is formed.

[0084] At this time, for Figure 5 For the part to be repaired 201 in the blade repair tool 100, two first-type finished films 301 and one second-type finished film 302 are dropped from the blanking hole 1012a to the corresponding area of ​​the part to be repaired 201, and then the cutting tool 103 cuts the other finished film. The finished film to be cut can be any type, and a plurality of small customized films corresponding to the various special-shaped areas are formed by cutting. Then, the blade repair tool 100 can be moved to drop the three small customized films from the blanking hole 1012a to the corresponding area, so as to be pieced together with the first-type finished film 301 and the second-type finished film 302, and cover the part to be repaired 201, and then the repair operation such as bonding can be performed.

[0085] The specific method of using the blade repair tool 100 for repair is as follows:

[0086] First, the monitoring system monitors the status of the blade 200. When the monitoring system detects that the blade 200 needs to be repaired, it prompts that the repair operation needs to be performed. In addition, the type and quantity of the finished film required can be determined according to the size and shape of the monitored part 201 to be repaired, and at the same time, it can be determined whether a customized film is needed in addition to the finished film, and the specific shape and size of the customized film. The selected finished film and the customized film are spliced ​​to fit the part 201 to be repaired.

[0087] Then, the blade repair tool 100 carries the required finished film, and carries the blade repair tool 100 to the blade 200 to be repaired by the mobile tool, specifically, carries the blade repair tool 100 to the root of the blade 200 to be repaired, and then the blade repair tool 100 moves to the part to be repaired 201 through its own crawling device 105. The blade repair tool 100 is installed at a specified position at the root of the blade 200, and this position can be set as the coordinate origin. Then, according to the moving path of the blade repair tool 100, the XYZ coordinates of the blade repair tool 100 can be recorded, and the coordinates of the part to be repaired 201 can be established according to the captured image. Then, the blade repair tool 100 can be moved to the part to be repaired 201 as required, and then the corresponding repair is performed according to the finished film configuration of the part to be repaired 201, that is, the finished film and the customized film are moved to the corresponding area of ​​the part to be repaired 201 according to the coordinate system.

[0088] Afterwards, the finished film carried by the blade repair tool 100 can directly fall into the part to be repaired 201 from the blanking hole 1012a, or the customized film formed by cutting by the cutting tool 103 falls into the part to be repaired 201 from the blanking hole 1012a. In order to make the finished film or the customized film fall into the corresponding area of ​​the part to be repaired 201, the blade repair tool 100 can be adjusted in position.

[0089] In this embodiment, the blade repair tool 100 may be provided with a first conveying component, which is used to convey the repair film to the blanking hole 1012a. The first conveying component is, for example, a conveying belt. Fig.10 As shown, the blade repair tool 100 also includes a storage device 107. Before the blade repair tool 100 moves to the blade 200, the type of finished film to be selected and the required number of finished films can be determined in advance according to the shape and size of the part 201 to be repaired of the blade 200. Figure 5 For example, two first-type finished films 301 and one second-type finished film 302 need to be selected, but an excess quantity needs to be carried so that the cutting tool 103 can be used to cut and form customized films corresponding to multiple special-shaped areas. Therefore, at least four finished films need to be carried. In order to form redundancy, more finished films can be carried as spares. At this time, the first conveying component can directly convey a finished film to the blanking hole 1012a corresponding to the finished film. In addition, the customized film cut by the cutting tool 103 can also be conveyed by the first conveying component to the corresponding position of the part to be repaired 201. Different first conveying components can be equipped corresponding to different blanking holes 1012a.

[0090] In addition, the film support platform 102 and the storage device 107 may be connected via a second conveying component to convey the finished film in the storage device 107 to the film support platform 102 for cutting of customized films.

[0091] It can be seen that the transfer of the repair film is not limited to this. For example, the frame 101 of the blade repair tool 100 can be provided with a first blanking track and a second blanking track. The repair film in the diaphragm support platform 102 can slide along the first blanking track and fall to the blanking hole 1012a; the repair film in the storage device 107 can slide to the diaphragm support platform 102 through the second blanking track. Of course, the blade repair tool 100 can also be provided with a manipulator to grab the repair film, but it can be seen that the above-mentioned method of providing a conveyor belt and providing a blanking track is obviously less costly.

[0092] It is mentioned above that the storage device 107 is used to store the repair film. It can be seen that the storage device 107 can also be used to match the weight and center of gravity of the rack 101 to resist wind load and other unbalanced loads.

[0093] The blade repair equipment in this embodiment also includes a mobile tool for carrying the blade repair tool 100 to the blade 200 to be repaired. The mobile tool is specifically a hoisting device 600. When repair is required, the blade repair tool 100 is first hoisted to the root of the blade 200 to be repaired by the hoisting device 600. The blade 200 to be repaired can be rotated to a horizontal position, and the blade 200 itself can be rotated to the position 201 to be repaired facing upward, and then the blade repair tool 100 can be placed on the blade 200. Fig.10 The frame 101 of the blade maintenance tool 100 can be supported on the blade 200. The mobile tool is not limited to the hoisting device 600. For example, the wind turbine can also be equipped with an elevator. In this case, the mobile tool can also be an elevator, which can transport the blade maintenance tool 100 to the top of the tower of the wind turbine and then move it to the root of the blade 200.

[0094] The frame 101 in this embodiment can also be provided with a crawling device 105 for driving the frame 101 to crawl along the surface of the blade 200. As mentioned above, the mobile tooling can move the blade repair tooling 100 to the root of the blade 200 to be repaired, and the blade repair tooling 100 itself can crawl to the root of the blade 200 to be repaired according to the needs, and the blade repair tooling 100 itself can crawl to the point where its blanking hole 1012a is aligned with the part 201 to be repaired, such as Fig.15 The blade repair tool 100 has a mobile function, so there is no need for a mobile tool to carry the blade repair tool 100 to the repaired part 201, thereby reducing the requirements for the mobile tool.

[0095] Manual operation is generally required when hoisting or transporting the blade repair tool 100 by elevator. It can be seen that the blade repair tool 100 can also be integrated into a drone, that is, the mobile device is a drone, and no manual operation is required, thereby further realizing the intelligent maintenance of the blade 200.

[0096] Specifically, if Fig.10As shown, the crawling device 105 may include a telescopic arm and a suction cup, and the suction cup can be attached to the surface of the blade 200, so as to increase the stability of the blade repair tool 100. A set of telescopic arms is arranged on the front side of the frame 101 of the blade repair tool 100, and the telescopic arms carry the suction cups and extend forward and attach to the surface of the blade 200, and then the telescopic arms are retracted to drive the blade repair tool 100 to move forward. The crawling device 105 may also include a rubber wheel and a driving member, and the driving member may include a motor, for example, to drive the rubber wheel to rotate to achieve walking, thereby taking into account both crawling and stable support.

[0097] Furthermore, if Fig.10 As shown, the blade repair tool 100 in this embodiment also includes a dust collecting device 104, which is arranged on the frame 101 and is used to collect and clean dust during the grinding process to ensure that the grinding surface meets the next repair process. The dust collecting device 104 can also include a heat dissipation component. Heat is generated during grinding and cutting the repair film, and the heat dissipation component is conducive to heat dissipation.

[0098] The blade repair tool 100 in the embodiment of the present application can be located at the part to be repaired 201 of the blade 200, and the blanking hole 1012a corresponds to the part to be repaired 201. At the same time, a cutting tool 103 is provided. The cutting tool 103 can cut the repair film according to needs. The carried repair film or the cut repair film can be directly dropped from the blanking hole 1012a to the part to be repaired 201, so as to facilitate rapid repair of the blade 200.

[0099] In addition, the repair film carried by the above-mentioned blade repair tool 100 is a finished film, and the repaired part 201 is repaired in a modular manner, that is, according to the regional analysis of the part 201 to be repaired, the finished film is directly used for the repair of the blade 200, and it is supplemented by a customized film, which can effectively reduce costs. If a special-shaped film that is the same as the part 201 to be repaired is directly cut out of a larger repair film according to the part 201 to be repaired, there will be a lot of scraps that cannot be reused, resulting in a waste of materials. However, the part 201 to be repaired is repaired in a modular manner, and the finished film is directly used. The auxiliary customized film requires a small area, and will not produce much scraps, which can save materials and reduce costs. Moreover, repairs are mainly carried out with finished films, which can be prefabricated and stored in advance, which can meet the general and customized requirements of different blade 200 coatings, and can also meet the repair needs of blades 200 from different manufacturers.

[0100] In addition, the use of finished film repair is conducive to the realization of rapid on-site repair, reducing the interruption of repair due to weather reasons, and the shortcomings of long drying time and poor consolidation effect of on-site repair. The image recognition function used decomposes the repaired part 201 into repair areas with different structures. Through the optimal algorithm, the finished film required for the repaired part 201 can be optimally matched, saving the use of repair film.

[0101] Moreover, the repair of the blade 200 in the embodiment of the present application is a customized, process-based repair process, which can reduce the risk of inadequate manual review. In special cases, when one of the finished films is insufficient or fails, it can be repaired by other finished films. It can be seen that the repair process also has its own structural fault diagnosis and redundancy functions.

[0102] In this embodiment, after the blade 200 is repaired, the repair effect can be ensured through the feedback data of the above-mentioned audio sensor and acceleration sensor, as well as a secondary inspection combined with vision.

[0103] In particular, data analysis and accumulation can be achieved based on the cases of damage and repair of blade 200, and the types of parts to be repaired and the repair data can be stored. Damage caused by collision, damage caused by lightning strikes, blade damage caused during installation or delivery, transportation, local corrosion damage caused during operation, etc. can be identified, and data identification areas can be established according to the types of damage to further accurately and efficiently analyze the correlation between the damage situation of the blade and the selection of the repair film. For example, for scratches caused by collision, which are usually longer scratches, in the process of selecting finished films through actual iterations for many times, the types and quantities of finished films required for such damage and whether customized films are needed can be accumulated, so as to make preliminary judgments and prepare finished films in advance, and then iterative calculations can be performed according to actual conditions. Even according to the actual repair needs, repairs can be made directly based on the preliminary judgment results, so that both efficiency and cost can be taken into account. In addition, according to the data analysis and accumulation of cases of damage and repair of blade 200, more types of finished films can be obtained, making the finished films more adaptable to various types of damage.

[0104] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A blade maintenance process, It is characterized in that The steps include: S1. Configure finished films in various shapes; S2. Analyze and select the type and quantity of finished film required according to the part to be repaired on the blade surface, and analyze whether a customized film is needed; S3, placing the selected finished film in the corresponding area of ​​the part to be repaired, and performing a repair and combination operation; When only a customized film is needed, the customized film is cut and formed, and the customized film is placed on the part to be repaired for repair operations; when both a customized film and a finished film are needed, the customized film is cut and formed, and the customized film and the selected finished film are placed on corresponding areas of the part to be repaired for repair operations.

2. The blade repair process according to claim 1, It is characterized in that In step S2, a model is established according to the part to be repaired, and a plurality of the finished films are substituted into the model of the part to be repaired. With the goal of minimizing the usage of the finished films, iterative calculations are performed to obtain the required types and quantities of the finished films.

3. The blade repair process according to claim 1, It is characterized in that The part to be repaired is polished so that the polished part to be repaired is matched and docked with the finished film and the customized film.

4. The blade repair process according to claim 3, It is characterized in that Projecting onto the part to be repaired, where the projection of the part to be repaired is within the projection of the finished film, and when the area of ​​the finished film not covering the part to be repaired is smaller than a predetermined proportion of the area of ​​the part to be repaired, polishing the part to be repaired to match it with the finished film.

5. The blade repair process according to claim 1, It is characterized in that The finished film is cut to form the customized film.

6. The blade repair process according to any one of claims 1 to 5, It is characterized in that The part to be repaired in step S2 is obtained by taking an image of the surface of the blade to obtain the part to be repaired.

7. The blade repair process according to claim 6, It is characterized in that At least one of the noise and acceleration of the blade is monitored, and when either the noise or the acceleration is abnormal, the part to be repaired is determined in combination with the image taken by the camera.

8. The blade repair process according to any one of claims 1 to 5, It is characterized in that A three-dimensional model of the blade is established, and the coordinates of the part to be repaired in the three-dimensional model are obtained. According to the coordinates, the finished film and the customized film are controlled to move to the corresponding area of ​​the part to be repaired.

9. The blade repair process according to any one of claims 1 to 5, It is characterized in that Establishing a database, wherein the database stores parameters of different types of finished membranes and the repair operation time of a single finished membrane; In step S2, the repair time required for one or more parts to be repaired is determined according to the type and quantity of the selected finished film, the operation window time is determined according to the current weather, and one or more parts to be repaired that match the operation window time are selected, or the operation is stopped and waits for the next operation window time.

10. The blade repair process according to any one of claims 1 to 5, It is characterized in that The type of the repaired part and the repair data are stored. Based on the stored data, a preliminary judgment is made on the type and quantity of the finished film to be selected and whether a customized film is needed before step S2, and then step S2 is entered or step S3 is directly performed.

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