A zipper-type connection repair component for the web assembly interface of a wind turbine blade and its connection and repair method.

Abstract

This invention discloses a zipper-type connection repair component and method for the web assembly interface of wind turbine blades, relating to the field of wind turbine blade technology. The component includes: a repair connection chain, which is a continuous strip along the blade spanwise direction, comprising two support belts, an interlocking engagement portion, and a pressing head. The interlocking engagement portion is constructed between the two support belts and forms a mating end face along its length. The pressing head is movably disposed on the interlocking engagement portion. Two adhesive functional layer components are also included, each containing a microcapsule component within its interlocking structure. This invention innovatively combines a zipper-type interlocking mechanism, interlocking mechanical engagement, microcapsule compression to release adhesive, and an integrated interlocking pressurizing roller assembly, providing a highly efficient, reliable, environmentally friendly, and easy-to-operate rapid repair component for defects at the web connection interface of wind turbine blades.

Description

Technical Field

[0001] This invention relates to the field of wind turbine blade technology, specifically to a zipper-type connection repair component for the web assembly interface of a wind turbine blade and its connection repair method. Background Technology

[0002] In wind turbine generator sets, the wind turbine blades are the core components for capturing wind energy, and their structural integrity and reliability are directly related to the safe operation and power generation efficiency of the unit. The blades are usually made of composite materials (such as glass fiber reinforced epoxy resin) and are bonded to the shell and the web (shear web). During the blade manufacturing process, due to limitations of manual operation and process fluctuations, defects such as insufficient glue, cavities, insufficient bonding width, and excessive glue layer often occur in the web bonding area. In addition, during the service life of the blades, they are subjected to alternating loads, fatigue stress, and environmental erosion for a long time, which may also lead to cracking or local debonding of the bonding interface.

[0003] Currently, the industry commonly uses a "window-opening" hand lay-up repair process to repair defects at the web connection interface of wind turbine blades. This traditional connection repair method has the following significant shortcomings:

[0004] First, the construction process is complicated and inefficient, and the overall repair cycle usually takes more than ten hours or even several days, which seriously affects the wind turbine's power generation revenue during shutdown, especially in wind farm emergency repair scenarios.

[0005] Secondly, the lack of a through-type reinforcement structure in the repair area means that the hand lay-up layer and the original blade shell rely solely on the interfacial bonding force at the connection interface. This makes the repair interface prone to delamination and peeling, and the fatigue life is difficult to meet the design requirements.

[0006] Third, on-site glue mixing is inconvenient and the quality control is poor. Furthermore, the repair components lack an integrated design, the operating space is limited, and the area inside the blade web is narrow (especially from the blade root to the middle section of the blade), making it extremely inconvenient to carry a variety of tools and materials.

[0007] Therefore, a component and method for repairing defects at the web connection interface of wind turbine blades that can be achieved quickly, reliably, easily, and with excellent mechanical properties are provided. Summary of the Invention

[0008] The purpose of this invention is to provide a zipper-type connection repair component and its repair method for the web assembly interface of wind turbine blades. By innovatively combining a zipper-type interlocking mechanism, a concave-convex locking mechanical engagement, a microcapsule crushing release adhesive, and an integrated engagement pressure roller assembly, this invention provides a high-efficiency, reliable, environmentally friendly, and easy-to-operate rapid repair component for defects in the web connection interface of wind turbine blades.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a zipper-type connection repair component for the web assembly interface of a wind turbine blade, comprising: a repair connection chain, wherein the repair connection chain is configured as a continuous strip along the blade spanwise direction, comprising two bearing belts, an interlocking engagement portion, and a pull-and-pressurize head, wherein the interlocking engagement portion is constructed between the two bearing belts and forms a mating end face along the length direction, and the pull-and-pressurize head is movably disposed on the interlocking engagement portion; two adhesive functional layer components, the two adhesive functional layer components being respectively composited at the bottom of the two bearing belts, and a plurality of sets of concave-convex interlocking structures linearly distributed between the two adhesive functional layer components, each set of concave-convex interlocking structures having a microcapsule component inside; the pull-and-pressurize head integrating an engagement and pressurize roller group, wherein when the pull-and-pressurize head acts on the interlocking engagement portion for stitching, the engagement and pressurize roller group is used to apply a pressing force to the interlocking engagement portion to crush the microcapsule component and force each set of concave-convex interlocking structures to engage in place.

[0010] Preferably, each bearing belt is made of fiber-reinforced composite material, which includes a bearing belt body and a raised strip integrally formed with the upper surface of the bearing belt body. The upper surface of the raised strip and the adjacent sidewalls are respectively provided with a sliding groove and a transmission groove, and the transmission groove is provided with a transmission surface that gradually thickens along the direction of the pulling and pressing head.

[0011] Preferably, the interlocking engagement part includes a second zipper part and a first zipper part that engage with each other. The second zipper part and the first zipper part are respectively connected to the opposite edges of the two carrying belts. The first end of the second zipper part is provided with a first zipper end, and the first end of the first zipper part is provided with a second zipper end. The end of the second zipper end extends into an end frame, and the first zipper end can be inserted and adapted to the end frame.

[0012] Preferably, the zipper head includes a zipper head, with sliders sliding in grooves on both sides of the top of the zipper head, and side grooves on the inner walls of both sides of the zipper head. At least one set of rollers that are in close contact with the transmission groove are provided in the side grooves. A connector is installed on the top of the zipper head, and a pull ring is movably installed on the connector. The pull ring can be manually driven or connected to a linear drive module. A glue injection tube is provided on the zipper head. One end of the glue injection tube passes through the pull ring and extends to the interlocking engagement part, and the other end can be connected to a feeder device.

[0013] Preferably, each of the bearing strips is also provided with a cover strip, and a magnetic strip is provided at the edge of the cover strip near the middle. When the pulling and pressing head acts on the interlocking engagement part and performs sewing, the two cover strips can quickly form a magnetically closed strip above the interlocking engagement part under the magnetic attraction of the magnetic strip.

[0014] Preferably, each adhesive functional layer component includes a base strip and a bottom strip respectively disposed inside the base strip. The bottom strip has a plurality of linearly distributed adhesive grooves, and each adhesive groove has an assembly groove corresponding to the position of the base strip for embedding and assembling a convex-concave locking structure. The outer edges of the two base strips near the bottom are respectively connected to a plurality of anchors. The plurality of anchors can act and connect to the substrates on both sides of the adhesive interface. One end of the base strip is connected to an end block. The end block has a locking hole and a positioning bolt threaded into the locking hole. The positioning bolt passes through the first zipper end and the end insert frame from top to bottom and is threaded into the locking hole.

[0015] Preferably, the interlocking structure includes a recessed clamp and a protruding plug. The recessed clamp and the protruding plug are respectively disposed in the assembly grooves opposite to each other on the inner side of the two base strips and can form an interlocking structure. The recessed clamp includes a mounting frame, and an assembly base is provided at the inner end of the mounting frame. A transmission locking block is fixed at the lower front side of the mounting frame. The transmission locking block has a right-angled triangular structure and a locking groove. A telescopically sliding end plate is provided inside the mounting frame. A spring is provided between the end plate and the assembly base, and a mounting plate is connected to the back side of the end plate. A swingable transmission lever is provided in the middle of the mounting plate. The end of the transmission lever away from the end plate... The device is equipped with a transmission lock pin that drives the transmission lock block and locks with the lock groove. The protruding plug includes a mounting block and a connecting rod that is T-shaped and assembled with the mounting block. The end of the connecting rod is connected to a lock head. The top of the end plate is connected to two locking fasteners on both sides. Both locking fasteners are made of elastic material and have locking grooves on their inner sidewalls that match the lock head. When the protruding plug mates with and is inserted into the groove, it squeezes the end plate downward and compresses the spring, causing the transmission lock pin at the end of the transmission rocker arm to move along the transmission surface of the transmission lock block until the transmission lock pin is engaged in the lock groove. This allows the lock head to be embedded step by step into the locking groove where the locking fastener is located and completes the concave-convex locking action.

[0016] Preferably, the microcapsule assembly includes a plurality of microcapsule bodies, each of which can be placed in an assembly base for assembling a plurality of repair agents with different components; the back of the mounting plate is provided with an extension block, the bottom of which is connected to a piercing tip, each piercing tip being provided with a piercing tip for piercing the microcapsule at the corresponding position; the bottom of the mounting frame is also provided with a base plate, the base plate having an outlet hole for the microcapsule solvent to flow out.

[0017] Preferably, the bottom of the two adhesive functional layer components is provided with an anchoring fiber reinforcement layer, the anchoring fiber reinforcement layer includes an anchoring support strip, the anchoring support strip is assembled at the bottom of the two bottom strips and extends to both sides with an extended anchoring mesh, the extended anchoring mesh is placed at the bottom of the base strip and is used to receive the microcapsule solvent flowing out of several dispensing holes.

[0018] A connection repair method, based on the aforementioned zipper-type connection repair assembly for the web assembly interface of a wind turbine blade, includes the following steps:

[0019] S1. Defect location and pretreatment: Non-destructive testing is performed on the web bonding area to determine the defect boundary, and positioning guide references are established on both sides of the defect area; then the surface of the defect area is roughened by grinding and dust removal.

[0020] S2. Chain laying: The anchors of the two base belts are respectively connected to the substrates on both sides of the bonding interface of the web plate, and the first ends of the two load-bearing belts are initially positioned to provide a prerequisite for the subsequent pulling action.

[0021] S3. Pull-and-roll forming: Drive the pull-and-roll head to move along the interlocking meshing part. By directly integrating the meshing pressure roller group into the pull-and-roll head, the clamping force along the repair direction is provided synchronously and continuously during the pull-and-roll process, so that the concave and convex locking structure is locked segment by segment. At the same time, the microcapsule component is crushed to release the repair adhesive to fill the micro gaps at the interface.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] This invention, by setting up a repair connection chain, simply requires placing two carrier belts on both sides of the web bonding defect, and then pulling the pull-close pressure head, which, like closing a zipper, causes the bonding functional layer components at the bottom of the two carrier belts to gradually approach and achieve linear engagement. Secondly, through the synergistic effect of the interlocking buckle and the microcapsule component, both mechanical locking and chemical bonding are enhanced. By innovatively combining the zipper-type interlocking mechanism, the mechanical engagement of the interlocking buckle, the microcapsule crushing and releasing of adhesive, and the integrated engagement pressure roller assembly, this invention provides a high-efficiency, reliable, environmentally friendly, and easy-to-operate rapid repair component for defects at the web connection interface of wind turbine blades. Attached Figure Description

[0024] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0025] Figure 2 for Figure 1 A second-view 3D structural diagram;

[0026] Figure 3 for Figure 1 A schematic diagram of the third-person perspective stereoscopic structure;

[0027] Figure 4 This is a schematic diagram of the disassembled structure of the present invention;

[0028] Figure 5 for Figure 4 A second-view 3D structural diagram;

[0029] Figure 6 for Figure 4 A top-view structural diagram;

[0030] Figure 7 for Figure 4 A schematic diagram of the third-person perspective structure;

[0031] Figure 8 This is a schematic diagram of another disassembly structure of the present invention;

[0032] Figure 9 for Figure 8 A partially enlarged structural diagram;

[0033] Figure 10 for Figure 5 A front view structural diagram;

[0034] Figure 11 for Figure 5 A magnified structural diagram at point A;

[0035] Figure 12 for Figure 5 A magnified structural diagram at point B;

[0036] Figure 13 for Figure 6 A magnified structural diagram at point C;

[0037] Figure 14 This is a schematic diagram of the disassembled structure of the concave-convex locking mechanism of the present invention;

[0038] Figure 15 This is a second-view three-dimensional structural diagram of the present invention;

[0039] Figure 16 This is a partially enlarged structural diagram of the pull-open pressurization head of the present invention;

[0040] Figure 17 for Figure 9 Another perspective of the three-dimensional structure diagram;

[0041] Figure 18 for Figure 1 A schematic diagram of the side view structure;

[0042] Figure 19 This is a schematic diagram of the combined application structure of the web plate, shell bonding, and repair connecting chain belt of the present invention.

[0043] In the diagram: 111, base strip; 1111, bottom strip; 1112, glue groove; 112, anchor; 114, end block; 115, locking hole; 116, anchoring support strip; 1161, extended anchoring mesh;

[0044] 211. Connecting rod; 2111. Lock head; 212. Locking fastener; 2121. Locking groove; 213. Transmission lock block; 2131. Lock groove; 214. Transmission rocker arm; 2141. Transmission lock pin; 215. End plate; 2151. Mounting plate; 216. Mounting block; 217. Mounting frame; 2171. Base plate; 2172. Glue outlet hole; 218. Spring; 219. Assembly base frame; 220. Microcapsule body; 221. Puncture tip; 222. Extension block;

[0045] 311. Carrying belt body; 312. Raised strip; 3121. Slide groove; 3122. Transmission groove; 313. First zipper section; 314. Second zipper section; 315. Positioning bolt; 316. First zipper end; 317. Second zipper end; 318. End insert frame;

[0046] 411. Cover strip; 412. Magnetic strip;

[0047] 511. Zipper head; 512. Side groove; 513. Slider; 514. Connector; 515. Pull ring; 516. Glue injection tube; 517. Roller;

[0048] 1010, Connection and repair assembly; 1020, Web body; 1030, Web bonding angle. Detailed Implementation

[0049] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] Please see Figures 1 to 19The present invention preferably provides the following technical solution: a zipper-type connection repair component for the web assembly interface of a wind turbine blade, comprising: a repair connection chain, the repair connection chain being configured as a continuous strip along the spanwise direction of the blade, comprising two bearing belts, an interlocking engagement portion, and a pull-and-pressurize head, wherein the interlocking engagement portion is constructed between the two bearing belts and forms a mating end face along the length direction, and the pull-and-pressurize head is movably disposed on the interlocking engagement portion; two adhesive functional layer components, the two adhesive functional layer components being respectively composited at the bottom of the two bearing belts, and several sets of concave-convex interlocking structures linearly distributed between the two adhesive functional layer components, each set of concave-convex interlocking structures containing a microcapsule component; the pull-and-pressurize head integrating an engagement and pressurize roller group, when the pull-and-pressurize head acts on the interlocking engagement portion for its stitching, the engagement and pressurize roller group is used to apply a pressing force to the interlocking engagement portion to crush the microcapsule component and force each set of concave-convex interlocking structures to engage in place.

[0052] This design, such as Figure 1 , 3 As shown in Figures 5 and 6, a repair connection chain is installed, comprising two carrier belts, an interlocking engagement portion between them, and a pull-and-pressurize head that can move along the interlocking engagement portion. During operation, the two carrier belts are simply positioned on either side of the web bonding defect or at the corresponding position of the interface to be repaired. Then, pulling the pull-and-pressurize head causes the bonding functional layer components at the bottom of the two carrier belts to gradually approach and achieve linear engagement, much like closing a zipper. The entire operation is continuous and fast, reducing the tedious process of layer-by-layer application and multiple curing cycles in traditional connection repair methods, and significantly improving the efficiency of on-site wind turbine blade repair.

[0053] Secondly, the synergistic effect of the interlocking mechanism and the microcapsule components achieves a dual enhancement of mechanical locking and chemical adhesion, such as... Figure 6 , 13 As shown in Figure 18, multiple sets of interlocking structures are linearly distributed between the two adhesive functional layer components. Each set of interlocking structures contains a pre-embedded microcapsule component. When the pulling and pressing head moves the interlocking engagement part, the engagement pressing roller group integrated in the pulling and pressing head simultaneously applies a normal clamping force to the interlocking engagement part. This clamping force forces the corresponding interlocking structures to overcome elastic deformation one by one and achieve precise mechanical engagement. On the other hand, the clamping force simultaneously crushes the microcapsule component located inside the interlocking structure, releasing the active adhesive such as epoxy resin prepolymer. The released adhesive automatically fills the engagement gap of the interlocking structure and penetrates into the interface between the surrounding blade shell and the carrier belt, completing in-situ chemical curing. Thus, the repaired area obtains dual enhancement of mechanical interlocking and chemical bonding, and its interface bonding strength is much higher than that of single bonding or single mechanical connection methods.

[0054] By directly integrating the meshing pressure roller assembly into the pulling and pressing head, a uniformly distributed normal clamping force is provided synchronously and continuously along the repair direction during the pulling and pressing process. The pressure stroke of the roller assembly is matched with the moving speed of the interlocking meshing part to ensure that each set of convex and concave latches is subjected to a preset amount of pressure when passing through the roller area. On the one hand, this ensures that the convex and concave latch structure is fully engaged to the designed position, and on the other hand, it ensures that the microcapsule component is reliably crushed, forming an integrated process of "pulling, pressing, and releasing simultaneously", which greatly improves the reliability and efficiency of repair quality.

[0055] Furthermore, two adhesive functional layer components are respectively composited at the bottom of two load-bearing strips. The load-bearing strips can use high-strength fiber fabrics such as carbon fiber, glass fiber, or aramid fabric as the reinforcing matrix, and the adhesive functional layer components can use pre-impregnated or semi-cured structural adhesive films. After the interlocking mechanism engages and the microcapsules are released and cured, the entire repair assembly forms a continuous, dense, and high-strength composite material patch in the defect area of ​​the blade web. This patch not only fills the original adhesive-deficient area but also crosses the defect boundary through the load-bearing strips, effectively transferring the service load to the intact area of ​​the blade shell and avoiding stress concentration.

[0056] The microcapsule components are pre-encapsulated inside each set of interlocking structures. When not in use, the microcapsules are in a stable, untriggered state. When in use, they are only crushed and released during the pulling and clamping process. The adhesive is fresh and highly active, and its mechanical properties after curing are close to or even exceed those of the original blade structural adhesive. This design fundamentally solves the problems of short pot life after mixing two-component adhesives in traditional on-site repairs, the need for immediate preparation and use, and the serious waste of residual adhesive.

[0057] It is worth noting that the repair component is a flexible strip that can be prefabricated to different lengths. Specifically, the wind turbine blade is locked in a horizontal position, the blade root manhole is opened, and maintenance personnel wearing safety protective equipment enter the interior of the blade to reach the area where the web bonding defect is located. During the crawling process, the operator does not need to carry large tools or mix adhesive. He only needs to unfold the repair component to the defect location and pull the pull-close pressure head to complete the repair. For long linear adhesive defects or bonding interface cracks, multiple sections can be spliced ​​together. The ends of the interlocking mesh can be designed as a continuous structure to meet the repair needs of different lengths.

[0058] In summary, this invention innovatively combines a zipper-type interlocking mechanism, a convex-concave locking mechanical engagement, a microcapsule crushing release adhesive, and an integrated meshing pressure roller assembly to provide a highly efficient, reliable, environmentally friendly, and easy-to-operate rapid repair component for defects at the web connection interface of wind turbine blades.

[0059] Furthermore, each bearing belt is made of fiber-reinforced composite material, which includes a bearing belt body 311 and a protrusion 312 integrally formed with the upper surface of the bearing belt body 311. The upper surface of the protrusion 312 and the adjacent sidewalls are respectively provided with a sliding groove 3121 and a transmission groove 3122, and the transmission groove 3122 is provided with a transmission surface that gradually thickens along the direction of the pulling and pressing head.

[0060] like Figure 5 , 12 As shown in Figure 16, each carrier belt is made of fiber-reinforced composite material such as carbon fiber, glass fiber, or aramid fiber-reinforced epoxy resin. The carrier belt serves as the skeleton of the entire repair assembly, including a carrier belt body 311 and a protrusion 312 on the upper surface of the carrier belt body 311. The carrier belt body 311 bears the main tensile load and transmits it to the adhesive functional layer assembly, while the protrusion 312 serves as a guiding and pressing structure, and a sliding groove 3121 and a transmission groove 3122 are provided on the protrusion 312. The sliding groove 3121 can be designed to cooperate with the inner guide rail of the pulling and pressing head to provide vertical limiting; the transmission groove 3122 cooperates with the lateral rollers of the pulling and pressing head to provide horizontal guidance. The two together constitute a constraint, so that the pulling and pressing head will not jump up and down or swing left and right when it moves along the length of the repair connecting chain, thereby ensuring that the pressing force of the meshing pressing roller assembly on the interlocking meshing part is always perpendicular to the joint surface.

[0061] Secondly, the inner wall of the transmission groove 3122 is provided with a transmission surface that gradually thickens. When the pulling and pressing head moves forward, its lateral rollers roll along the transmission surface. As the thickness of the transmission surface increases, the normal reaction force on the roller 517 gradually increases. Consequently, the pressure transmitted to the interlocking engagement part through the meshing pressing roller group also gradually increases. That is, the pressure is small in the initial stage, and only the initial alignment and guidance of the concave and convex latches are completed. As the pulling and pressing progresses, the pressure gradually increases, ensuring that the microcapsule is reliably crushed at the predetermined position. Furthermore, the increasing transmission surface can provide additional pressing stroke, forcing the latches to overcome resistance and complete the final engagement.

[0062] Furthermore, the interlocking engagement part includes a second zipper part 314 and a first zipper part 313 that engage with each other. The second zipper part 314 and the first zipper part 313 are respectively connected to the opposite edges of the two carrying belts. The first end of the second zipper part 314 is provided with a first zipper end 316, and the first end of the first zipper part 313 is provided with a second zipper end 317. The end of the second zipper end 317 extends into an end frame 318, and the first zipper end 316 can be inserted and adapted to the end frame 318. One of the base belt bodies 111 has an end block 114 connected to its end. The end block 114 has a locking hole 115 and a positioning bolt 315 that is threaded into the locking hole 115. The positioning bolt 315 passes through the first zipper end 316 and the end frame 318 from top to bottom and is threaded into the locking hole 115.

[0063] Through the interlocking engagement part, such as Figure 5 , 12 As shown, on the edges of the opposite sides of the two carrying belts, interlocking engagement parts, a second zipper part 314 and a first zipper part 313, are respectively provided. The first end of the second zipper part 314, i.e., the starting end of the zipping, has a protruding first zipper end 316, and the first end of the first zipper part 313 has a corresponding end frame 318. The first zipper end 316 and the end frame 318 can be inserted and fitted together. Before starting the zipping, the operator only needs to insert the first zipper end 316 into the end frame 318 to initially position the first ends of the two carrying belts, ensuring that the interlocking engagement parts, the second zipper part 314 and the first zipper part 313, are always in the correct engagement phase during the zipping process. After the first zipper end 316 and the end frame 318 are inserted and fitted together, a positioning bolt 315 is used to pass through the first zipper end 316 and the end frame 318 sequentially from top to bottom to lock their relative positions.

[0064] Example 2

[0065] In another embodiment of the present invention, the zipper head includes a zipper head 511, with sliders 513 sliding in a groove 3121 on both sides of the top of the zipper head 511, and side grooves 512 on the inner walls of both sides of the zipper head 511. At least one set of rollers 517 are provided in the side grooves 512 and are closely attached to the transmission groove 3122. A connector 514 is installed on the top of the zipper head 511, and a pull ring 515 is movably installed on the connector 514. The pull ring 515 can be manually driven or connected to a linear drive module. A glue injection tube 516 is provided on the zipper head 511. One end of the glue injection tube 516 passes through the pull ring 515 and extends to the interlocking engagement part, and the other end can be connected to a feeder device.

[0066] Furthermore, each carrying strip is also provided with a cover strip 411, and a magnetic strip 412 is provided at the edge of the cover strip 411 near the middle. When the pulling and pressing head acts on the interlocking engagement part and performs sewing, the two cover strips 411 can quickly form a magnetic closing strip above the interlocking engagement part under the magnetic attraction of the magnetic strip 412.

[0067] In this embodiment, such as Figure 12 , 16As shown, a slider 513 is provided at the top of the zipper head, which forms a sliding fit with the groove 3121 to achieve linear guidance. When the zipper head moves along the length of the repair connecting chain, this fit structure ensures that the pressure head always travels along a preset straight trajectory. Secondly, at least one set of rollers 517 is provided on the inner walls of both sides of the zipper head 511. These rollers 517 travel close to the transmission groove 3122 opened on the side wall of the protrusion 312. As mentioned above, the transmission groove 3122 has a transmission surface that gradually thickens along the zipper direction. When the rollers 517 roll along the transmission groove 3122, they receive a gradually increasing normal reaction force due to the increasing thickness of the transmission surface. This force is transmitted through the zipper head 511 to the meshing pressure roller assembly, and then converted into a progressive clamping force on the interlocking meshing part.

[0068] like Figure 16 As shown, a connector 514 is installed on the top of the zipper head 511, and a pull ring 515 is movably installed on the connector 514. The pull ring 515 can be configured in two ways: one is a manual drive, in which the pull ring 515 is a handle or a pull ring, which the operator can directly pull by hand. This is suitable for emergency repair scenarios where the length of a single repair is short and there is no air or power source on site; the other is to connect to a linear drive module, which is suitable for large-volume repair operations with longer lengths or requiring a constant pulling speed. The two modes can be quickly switched.

[0069] Furthermore, the zipper head 511 is combined with the glue injection tube 516, such as... Figure 16 As shown, one end of the dispensing tube 516 passes through the drive ring 515 and extends to the interlocking engagement part, i.e., the engagement area of ​​the convex and concave lock. The other end can be connected to a supply device such as a micro dispensing pump. During the movement of the pulling and pressing head, the operator can continuously or intermittently inject an auxiliary agent into the interlocking engagement part through the dispensing tube 516. The auxiliary agent can be one of the following types or a combination thereof: a low-viscosity penetrating adhesive to further fill the microscopic gaps after the convex and concave lock engages; a accelerator or promoter to regulate the curing time when the main adhesive released from the microcapsule cures slowly by injecting an accelerator through the dispensing tube 516; or a sealant to seal the edge gaps of the interlocking engagement part after pulling and closing, preventing moisture or corrosive media from penetrating.

[0070] Furthermore, such as Figure 1 , 2 As shown in Figure 5, each carrying belt is also provided with a cover strip 411. A magnetic strip 412 is provided at the edge of the cover strip 411 near the middle. When the pulling and pressing head completes the stitching of the interlocking engagement part, under the magnetic attraction of the magnetic strip 412, the two cover strips 411 can quickly and automatically attract and form a closed strip above the interlocking engagement part. The closed strip covers the interlocking engagement part, which plays the role of preventing dust and foreign objects from entering.

[0071] Example 3

[0072] In another embodiment of the present invention, each adhesive functional layer assembly includes a base strip 111 and a bottom strip 1111 respectively disposed inside the base strip 111. The bottom strip 1111 is provided with a plurality of linearly distributed adhesive grooves 1112. Each adhesive groove 1112 is provided with an assembly groove corresponding to the position of the base strip 111 for embedded assembly of the concave-convex locking structure. The outer edges of the two base strips 111 near the bottom are respectively connected with a plurality of anchors 112. The plurality of anchors 112 can act and connect to the substrates on both sides of the adhesive interface.

[0073] In this embodiment, each adhesive functional layer assembly includes a base strip 111 and a bottom strip 1111 located inside the base strip 111. The base strip 111, as a structural reinforcement layer, can be made of fiber-reinforced composite material of the same type as the load-bearing strip, providing a tensile and shear-resistant framework. The bottom strip 1111, as a functional layer, has the basic functions of bonding, sealing, and accommodating interlocking buckles. When the repair assembly is pulled and locked, as... Figure 13 , 14 As shown in 15, 17, 18 and 19, a number of linearly distributed assembly slots are provided on the baseband body 111, and each assembly slot corresponds to the installation position of a concave-convex locking structure.

[0074] Secondly, several anchors 112 are connected to the outer edges of the two base strips 111 near the bottom. At the start of the repair, the operator can apply and connect these anchors 112 to the substrates on both sides of the web connection interface bonding interface. The specific form of the anchors 112 can be: an insertable anchor hook: lightly tapped into the surface of the blade shell, or an adhesive strip to provide temporary fixation. The presence of the anchors 112 ensures that the entire repair assembly is stably positioned in the defect area before the pull-close pressurization head operation, providing a prerequisite guarantee for the subsequent pull-close action.

[0075] Furthermore, the interlocking structure includes a recessed clamp and a protruding plug. The recessed clamp and the protruding plug are respectively located in the assembly slots opposite to each other inside the two base strips 111 and can form an interlocking structure. The recessed clamp includes a mounting frame 217. An assembly base frame 219 is provided at the inner end of the mounting frame 217, and a transmission locking block 213 is fixed at the lower front side of the mounting frame 217. The transmission locking block 213 has a right-angled triangular structure and a locking groove 2131. A telescopically sliding end plate 215 is provided inside the mounting frame 217. A spring 218 is provided between the end plate 215 and the assembly base frame 219, and a mounting plate 2151 is connected to the back side of the end plate 215. A swingable transmission lever 214 is provided in the middle of the mounting plate 2151. The end of the transmission lever 214 away from the end plate 215 is provided with a transmission lock block 213. The transmission lock pin 2141 is locked with the lock groove 2131; the convex plug includes a mounting block 216, a connecting rod 211 assembled with the mounting block 216 in a T-shape, a lock head 2111 connected to the end of the connecting rod 211, and locking fasteners 212 connected to both sides of the top of the end plate 215. Both locking fasteners 212 are made of elastic material and have a locking groove 2121 matching the lock head 2111 on their inner sidewall. When the convex plug aligns with and is inserted into the groove clamp, the end plate 215 is pressed down and the spring 218 is compressed, which drives the transmission lock pin 2141 at the end of the transmission rocker arm 214 to move along the transmission surface of the transmission lock block 213 until the transmission lock pin 2141 is engaged in the lock groove 2131, so that the lock head 2111 is embedded step by step into the locking groove 2121 where the locking fastener 212 is located and the concave-convex locking action is completed.

[0076] The interlocking structure consists of a recessed clamp and a protruding plug, which are interlocked through the following steps: Initial insertion: The locking head 2111 connected to the end of the connecting rod 211 of the protruding plug enters the opening of the recessed clamp, pressing the end plate 215 to move downward. Then, the end plate 215 moves downward and compresses the spring 218, while driving the swingable transmission rod 214 and its end transmission locking pin 2141 to move along the hypotenuse of the right-angled triangular structure of the transmission lock block 213. When the protruding plug is inserted to a predetermined depth, the transmission locking pin 2141 passes the right-angle vertex of the transmission lock block 213 and is locked in the lock groove 2131. At the same time, the locking head 2111 is embedded in the lock groove 2121 on the inner side wall of the locking member 212.

[0077] like Figure 13 and 14 As shown, since the transmission locking pin 2141 is locked by the locking groove 2131, the end plate 215 cannot move upward, thereby locking the protruding plug in the fully engaged position; at the same time, the locking member 212, as a clamping arm made of elastic material, has a locking groove 2121 on its inner wall forming an inverted structure with the lock head 2111, providing anti-disengagement constraint.

[0078] Furthermore, the transmission lock block 213 has a right-angled triangular structure, with its hypotenuse serving as the transmission surface. When the end of the transmission rocker arm 214, the transmission lock pin 2141, moves along the hypotenuse, the downward pressure of the vertical displacement end plate 215 is converted into a horizontal swing stroke, allowing the transmission lock pin 2141 to slide across the hypotenuse with minimal resistance and eventually fall into the lock groove 2131 without dislodging due to vibration.

[0079] Each set of convex and concave latches is an independent module that can be pre-assembled and embedded in the assembly slot. This modular design allows the repair assembly to flexibly configure the number of latches according to the length of the defect, for example, one set every 50mm.

[0080] Anchor 112 anchors both ends of the repair assembly to the intact blade shell, while the interlocking latches form a continuous chain within the repair area. Together, these components distribute the alternating load of the blade across multiple latches and the two end anchor points, preventing stress concentration at a single interface.

[0081] Secondly, since the convex and concave latches will make a clear "click" sound when fully engaged, this is generated when the transmission lock pin 2141 is inserted into the lock groove 2131, and the springback action of the end plate 215 can be sensed by touch through the tiny protrusions in the thickness direction, the operator can confirm the locking status of each set of latches in real time during the pulling and closing process.

[0082] In summary, this invention constructs a web connection interface defect repair structure that is easy to construct on-site by setting up an adhesive functional layer component and designing a concave-convex interlocking structure. This structure improves the mechanical properties of the repaired area through the synergistic effect of mechanical interlocking and chemical bonding microcapsule release, while greatly simplifying the on-site operation process.

[0083] Example 4

[0084] As another embodiment of the present invention, based on embodiment 3, a microcapsule assembly is further extended. The microcapsule assembly includes a plurality of microcapsule bodies 220, each microcapsule body 220 can be placed in the assembly base 219 for assembling a plurality of repair agents with different components; the back of the mounting plate 2151 is provided with an extension block 222, the bottom of the extension block 222 is connected with a piercing tip 221, each piercing tip 221 is provided with a piercing tip 221 for piercing the microcapsule at the corresponding position, and the bottom of the mounting frame 217 is also provided with a base plate 2171, the base plate 2171 is provided with an outlet hole 2172 for the microcapsule solvent to flow out.

[0085] In this embodiment, such as Figure 13 , 14As shown in Figure 15, each microcapsule 220 can independently encapsulate repair agents of different components and is placed in the assembly base 219 cavity at the end of the groove clamp. These repair agents may include: main adhesive components such as epoxy resin prepolymer, curing agent components such as amine or acid anhydride curing agents, and visual tracer dyes for easy inspection after repair.

[0086] During storage and transportation, the components are isolated from each other and do not undergo any pre-reaction, thus achieving extremely long storage stability. In use, the locking mechanism synchronously triggers the rupture of all microcapsules. After flowing out, the components automatically mix and cross-link, solidifying. The mounting plate 2151 is equipped with piercing structures and piercing tips 221, such as spikes, blades, or protrusions. Each piercing tip 221 corresponds to a preset position of a microcapsule 220. When the locking mechanism engages, the protruding protrusion inserts into the recessed clamp, pressing the end plate 215 downwards and compressing the spring 218. The mounting plate 2151 moves downwards synchronously with the end plate 215, causing the piercing tips 221 to approach the microcapsule 220. When the locking mechanism reaches its final engagement position, the transmission locking pin 2141 engages in the locking groove 2131, and the piercing tip 221 precisely pierces the shell of the corresponding microcapsule 220.

[0087] like Figure 6 , 9 As shown in Figure 14, the bottom plate 2171 provided at the bottom of the mounting frame 217 has an adhesive outlet hole 2172. When the microcapsule body 220 is punctured, the internal repair agent flows out to the bottom plate 2171, and then flows through the adhesive outlet hole 2172 to the meshing gap of the convex and concave locking buckle and the bottom belt 1111, and flows along the adhesive groove 1112 to the interface area of ​​the blade shell. Multiple adhesive outlet holes 2172 can be along the blade spanwise direction to ensure that each locking unit of the entire repair connection chain can obtain a uniform supply of repair agent.

[0088] When two of the microcapsules 220 are loaded with the main adhesive and the curing agent respectively, they come into contact and mix for the first time in the area of ​​the base plate 2171 after flowing out. Then they flow into the bonding interface through the glue outlet 2172. Under the condition of the lock holding the pressure, the mixed adhesive completes the curing and forms a bonding layer with a high cross-linking density. Experiments show that the tensile shear strength of the bonding joint formed by this method can reach more than 25 MPa, which is close to or even exceeds the level of the structural adhesive used in the original blade manufacturing.

[0089] Preferably, one or more microcapsule bodies 220 can be added, which can encapsulate colored dyes such as fluorescent agents or visible pigments. When punctured, the dye flows out with the repair agent and reaches the surface through the dispensing hole 2172. The operator can observe the color change with the naked eye, thereby intuitively confirming that the microcapsule has been successfully triggered, which can provide immediate feedback for on-site construction.

[0090] In summary, by designing the microcapsule component as a multi-chamber structure, combined with the puncture tip 221 of the puncture structure and the dispensing hole 2172 of the solvent outflow channel, this invention significantly improves the controllability of the chemical composition of the adhesive layer, the uniformity of mixing, and the reliability of curing while maintaining the ease of repair operation. It is a further enhancement of the aforementioned concave-convex interlocking mechanical locking structure, forming multiple functions of mechanical interlocking, chemical bonding, and multi-component repair.

[0091] Example 5

[0092] In another embodiment of the present invention, an anchoring fiber reinforcement layer is provided at the bottom of the two adhesive functional layer components. The anchoring fiber reinforcement layer includes an anchoring support strip 116. The anchoring support strip 116 is assembled at the bottom of the two bottom strips 1111 and extends to both sides with an extended anchoring mesh 1161. The extended anchoring mesh 1161 is placed at the bottom of the base strip body 111 and is used to receive the microcapsule solvent flowing out from a plurality of dispensing holes 2172.

[0093] In this embodiment, such as Figure 8 , 9 As shown in Figure 18, by setting anchor support strips 116 at the bottom of the two adhesive functional layer components and assembling the strips at the bottom of the two bottom strips 1111, while extending the extended anchor mesh 1161 structure to both sides, the anchoring force between the adhesive functional layer components and the repair area can be effectively improved, thereby enhancing the stability of the overall structure.

[0094] The extended anchoring mesh 1161 is placed at the bottom of the base body 111, such as Figure 8 As shown, it can receive and uniformly disperse the microcapsule solvent flowing out from several dispensing holes 2172. This helps the microcapsule solvent to diffuse evenly to the bonding interface, and the anchoring fiber reinforcement layer, while undertaking the anchoring function, also has the functions of solvent reception and distribution, realizing the integration of structural reinforcement and functional bonding, simplifying the structure, and improving the overall reliability and stability of the structure.

[0095] like Figure 19 As shown, a connection and repair component is provided for use in the web connection and repair process. Specifically, by setting web bonding angles 1030 at both ends of the web body 1020, and placing the web bonding angles 1030 distributed at both ends on the upper and lower sides of the blade bonding position, two sets of connection and repair components 1010 are placed at the web bonding angles 1030 and the blade bonding position, and then pulled together to repair and cure, so as to quickly realize the connection and repair process of the web.

[0096] Example 6

[0097] As another embodiment of the present invention, a connection repair method, based on the aforementioned zipper-type connection repair assembly for the web assembly interface of a wind turbine blade, includes the following steps:

[0098] S1. Defect location and pretreatment: Non-destructive testing is performed on the web bonding area to determine the defect boundary, and positioning guide references are established on both sides of the defect area; then the surface of the defect area is roughened by grinding and dust removal.

[0099] S2. Chain laying: The anchors of the two base belts are respectively connected to the substrates on both sides of the bonding interface of the web plate, and the first ends of the two load-bearing belts are initially positioned to provide a prerequisite for the subsequent pulling action.

[0100] S3. Pull-and-roll forming: Drive the pull-and-roll head to move along the interlocking meshing part. By directly integrating the meshing pressure roller group into the pull-and-roll head, the clamping force along the repair direction is provided synchronously and continuously during the pull-and-roll process, so that the concave and convex locking structure is locked segment by segment. At the same time, the microcapsule component is crushed to release the repair adhesive to fill the micro gaps at the interface.

[0101] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Among these, there are various methods of detachable installation, such as using a combination of plug-in and snap-fit, or using bolt connections, etc.

[0102] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A zipper-type connection repair component for the web assembly interface of a wind turbine blade, characterized in that, include: A repair connecting chain is configured as a continuous strip along the spanwise direction of the blade, comprising two bearing belts, an interlocking engagement part, and a pull-and-pressurize head. The interlocking engagement part is constructed between the two bearing belts and forms a mating end face along the length direction. The pull-and-pressurize head is movably disposed on the interlocking engagement part. Two adhesive functional layer components are respectively bonded to the bottom of two carrier strips, and several sets of concave-convex interlocking structures are linearly distributed between the two adhesive functional layer components. Each set of concave-convex interlocking structures is provided with a microcapsule component inside. The pull-opening and pressing head is integrated with a set of meshing and pressing rollers. When the pull-opening and pressing head acts on the interlocking meshing part and is used for its suturing, the set of meshing and pressing rollers is used to apply a clamping force to the interlocking meshing part to crush the microcapsule assembly and force each set of concave and convex locking structures to mesh into place.

2. The zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 1, characterized in that: Each carrying belt is made of fiber-reinforced composite material, including a carrying belt body (311) and a protrusion (312) integrally formed with the upper surface of the carrying belt body (311). The upper surface of the protrusion (312) and the adjacent sidewalls are respectively provided with a sliding groove (3121) and a transmission groove (3122), and the transmission groove (3122) is provided with a transmission surface that gradually thickens along the direction of the pulling and pressing head.

3. The zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 1, characterized in that: The interlocking engagement part includes a second zipper part (314) and a first zipper part (313) that engage with each other. The second zipper part (314) and the first zipper part (313) are respectively connected to the opposite edges of the two carrying belts. The first end of the second zipper part (314) is provided with a first zipper end (316), and the first end of the first zipper part (313) is provided with a second zipper end (317). The end of the second zipper end (317) extends into an end frame (318), and the first zipper end (316) can be inserted and adapted to the end frame (318).

4. The zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 1, characterized in that: The zipper head includes a zipper head (511), with sliders (513) sliding in a groove (3121) on both sides of the top of the zipper head (511), and side grooves (512) on the inner walls of both sides of the zipper head (511). The side grooves (512) are provided with at least one set of rollers (517) that are in close contact with the transmission groove (3122). A connector (514) is installed on the top of the zipper head (511), and a pull ring (515) is movably installed on the connector (514). The pull ring (515) can be manually driven or connected to a linear drive module. A glue injection tube (516) is provided on the zipper head (511). One end of the glue injection tube (516) passes through the pull ring (515) and extends to the interlocking engagement position, and the other end can be connected to a feeder device.

5. The zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 1, characterized in that: Each of the aforementioned carrying strips is also provided with a cover strip (411), and a magnetic strip (412) is provided at the edge of the cover strip (411) near the middle. When the pressure head is pulled and applied to the interlocking engagement part and the sewing is performed, under the magnetic attraction of the magnetic strip (412), the two cover strips (411) can quickly form a magnetically closed strip above the interlocking engagement part.

6. The zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 1, characterized in that: Each adhesive functional layer component includes a base strip (111) and a bottom strip (1111) respectively disposed inside the base strip (1111). The bottom strip (1111) is provided with a plurality of linearly distributed adhesive grooves (1112). Each adhesive groove (1112) is provided with an assembly groove corresponding to the position of the base strip (111) for embedded assembly of the concave-convex locking structure. The outer edges of the two base strips (111) near the bottom are respectively connected to a plurality of anchors (112). The plurality of anchors (112) can respectively act and connect to the substrates on both sides of the adhesive interface. One of the baseband bodies (111) has an end block (114) connected to its end. The end block (114) has a locking hole (115) and a positioning bolt (315) threadedly fitted to the locking hole (115). The positioning bolt (315) passes through the first zipper end (316) and the end insert frame (318) from top to bottom and is threadedly connected to the locking hole (115).

7. A zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 6, characterized in that: The interlocking structure includes a recessed clamp and a protruding plug. The recessed clamp and the protruding plug are respectively located in the mounting slots of the two base plates (111) and can form an interlocking structure. The recessed clamp includes a mounting frame (217). The mounting frame (217) has an mounting base (219) at its inner end, and a transmission lock block (213) is fixed to the lower part of its front side. The transmission lock block (213) has a right-angled triangular structure and is provided with a lock groove (2131). The mounting frame (217) contains... A telescopic sliding end plate (215) is provided, and a spring (218) is provided between the end plate (215) and the mounting base (219). A mounting plate (2151) is connected to the back side of the end plate (215). A swingable transmission rod (214) is provided in the middle of the mounting plate (2151). A transmission lock pin (2141) is provided at the end of the transmission rod (214) away from the end plate (215) to drive the transmission lock block (213) and lock it with the lock groove (2131). The convex plug includes a mounting block (216) and a connecting rod (211) assembled in a T-shape with the mounting block (216). The end of the connecting rod (211) is connected to a lock head (2111). The top of the end plate (215) is connected to two locking fasteners (212). Both locking fasteners (212) are made of elastic material and have locking grooves (2121) that match the lock head (2111) on their inner sidewalls. When the convex plug is inserted into the groove clamp, it squeezes the end plate (215) to move downward and compresses the spring (218), which drives the transmission lock pin (2141) at the end of the transmission swing rod (214) to move along the transmission surface of the transmission lock block (213) until the transmission lock pin (2141) is inserted into the lock groove (2131), so that the lock head (2111) is embedded in the locking groove (2121) where the locking fastener (212) is located and completes the concave-convex locking action.

8. A zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 7, characterized in that: The microcapsule assembly includes a plurality of microcapsule bodies (220), each of which can be placed in an assembly base (219) for assembling a plurality of different component repair agents; the back of the mounting plate (2151) is provided with an extension block (222), the bottom of which is connected to a piercing tip (221), each piercing tip (221) is provided with a piercing tip (221) for piercing the microcapsule at the corresponding position, and the bottom of the mounting frame (217) is also provided with a base plate (2171), the base plate (2171) is provided with an outlet hole (2172) for the microcapsule solvent to flow out.

9. A zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to claim 6, characterized in that: An anchoring fiber reinforcement layer is provided at the bottom of the two adhesive functional layer components. The anchoring fiber reinforcement layer includes an anchoring support strip (116). The anchoring support strip (116) is assembled at the bottom of the two bottom strips (1111) and extends to both sides with an extended anchoring mesh (1161). The extended anchoring mesh (1161) is placed at the bottom of the base strip body (111) and is used to receive the microcapsule solvent flowing out from several dispensing holes (2172).

10. A connection repair method, comprising a zipper-type connection repair assembly for the web assembly interface of a wind turbine blade according to any one of claims 1-9, characterized in that: The connection repair method includes the following steps: S1. Defect location and pretreatment: Non-destructive testing is performed on the web bonding area to determine the defect boundary, and positioning guide references are established on both sides of the defect area; then the surface of the defect area is roughened by grinding and dust removal. S2. Chain laying: The anchors (112) where the two base belts (111) are located are respectively connected to the substrates on both sides of the bonding interface of the web connection interface, and the first ends of the two bearing belts are initially positioned to provide a prerequisite for subsequent pulling action; S3. Pull-and-roll forming: Drive the pull-and-roll head to move along the interlocking meshing part. By directly integrating the meshing pressure roller group into the pull-and-roll head, the clamping force along the repair direction is provided synchronously and continuously during the pull-and-roll process, so that the concave and convex locking structure is locked segment by segment. At the same time, the microcapsule component is crushed to release the repair adhesive to fill the micro gaps at the interface.

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