Wind turbine blade infusion system and wind turbine blade infusion method

Abstract

This application provides a wind turbine blade injection system and method. The wind turbine blade injection system includes a blade mold, a flow channel assembly, an injection device, a vacuuming device, and a monitoring device. The flow channel assembly has multiple connection ports. The injection device includes a feeding component, a conveying pipeline, and a valve assembly. The conveying pipeline includes a main pipeline and multiple branch pipelines. The valve assembly includes multiple valves, each corresponding to one of the branch pipelines. The monitoring device includes an imaging component and a control component. The imaging component captures images of the wind turbine blade skin and obtains image information. The control component controls the opening and closing of the remaining valves based on the image information when some of the valves are open. This application can effectively improve the injection efficiency and quality of the wind turbine blade injection system.

Description

Technical Field

[0001] This application relates to the field of wind power generation technology, and in particular to a wind turbine blade injection system and a wind turbine blade injection method. Background Technology

[0002] With the development of technology, clean and green energy has become one of the main energy sources today. Wind energy, as a major green energy source, occupies the mainstream of green energy development, and the increasing demand for green energy has led to a rapid increase in the overall size of wind turbine blades. As the global wind power industry rapidly develops towards high power and ultra-long blades, ultra-large wind turbine blade skins are characterized by complex layered structures, large areas, and thick material accumulation.

[0003] Vacuum infusion systems in related technologies typically rely on manual control of each valve's opening and closing and flow rate during the infusion process. This results in poor controllability, is time-consuming and labor-intensive, leading to numerous infusion defects and low infusion efficiency. Furthermore, these technologies often employ sensors laid on the surface of the wind turbine blade skin to detect resin flow; however, the sensors themselves can affect the infusion effect, and they are easily damaged during the infusion process, making them difficult to reuse, thus impacting the quality and cost of the wind turbine blades. Therefore, effectively improving the infusion efficiency and quality of wind turbine blade infusion systems remains an ongoing research direction. Summary of the Invention

[0004] In view of the above problems, this application provides a wind turbine blade injection system and a wind turbine blade injection method, which can effectively improve the injection efficiency and quality of the wind turbine blade injection system.

[0005] In a first aspect, embodiments of this application provide a wind turbine blade injection system. The system includes a blade mold, a flow channel assembly, an injection device, a vacuuming device, and a monitoring device. The blade mold is used to hold the wind turbine blade skin. The flow channel assembly is disposed on the surface of the wind turbine blade skin facing away from the blade mold, extending along the axial direction of the wind turbine blade, and has multiple connection ports. The injection device includes a feeding component, a conveying pipeline, and a valve assembly. The feeding component provides resin, and the conveying pipeline includes a main pipeline and multiple branch pipelines. The main pipeline connects the feeding component and the branch pipelines, and each branch pipeline corresponds to and is connected to a specific connection port. The valve assembly includes multiple valves, each corresponding to a specific branch pipeline. The vacuuming device includes a vacuum membrane and a vacuum pump. The vacuum membrane seals the blade mold, and the vacuum pump evacuates the interior of the blade mold. The monitoring device includes an imaging component and a control component, with the control component connected to the valve assembly and the imaging component. The imaging component is used to capture images of the wind turbine blade skin and obtain image information, including at least one of resin flow path information, flow channel assembly position information, and connection port position information. The control component is used to control the opening and closing of the remaining valves based on at least one of the resin flow path information, flow channel assembly position information, and connection port position information when some of the valves are open.

[0006] In some embodiments of the first aspect, the flow channel assembly includes a first flow channel and a second flow channel, which are spaced apart circumferentially along the wind turbine blade. A first connection port is provided on the first flow channel, and a second connection port is provided on the second flow channel. Multiple branch pipes include a first branch pipe and a second branch pipe, with the first branch pipe connected to the first connection port and the second branch pipe connected to the second connection port. Multiple valves include a first valve and a second valve, with the first valve disposed on the first branch pipe and the second valve disposed on the second branch pipe. A control component is used to control the second valve to open when the first valve is open, provided that the flow path information of the resin and the position information of the second flow channel meet a first preset opening condition.

[0007] In some embodiments of the first aspect, a third connection port is further provided on the first flow channel, and the first connection port and the third connection port are spaced apart along the axial direction of the wind turbine blade. The plurality of branch pipes also include a third branch pipe connected to the third connection port. The plurality of valves also include a third valve disposed on the third branch pipe. The control component is further configured to control the third valve to open when the resin flow path information and the position information of the third connection port meet a second preset opening condition, provided that the first valve is open.

[0008] In some embodiments of the first aspect, the wind turbine blade infusion system further includes a first marking component disposed on the surface of the wind turbine blade skin and extending circumferentially along the wind turbine blade. The first marking component is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes color information of the first marking component, and the control component is further configured to optimize the resin flow path information based on the color information of the first marking component.

[0009] In some embodiments of the first aspect, the wind turbine blade infusion system further includes a second marking component disposed on the surface of the wind turbine blade skin and extending along the axial direction of the wind turbine blade. The second marking component is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes color information of the second marking component, and the control component is further configured to optimize the resin flow path information based on the color information of the second marking component.

[0010] In some embodiments of the first aspect, the wind turbine blade injection system further includes a third marking component disposed on the side of the vacuum membrane facing away from the wind turbine blade skin and near the connection port. The image information also includes position information of the third marking component, and the control component is further configured to control the flow rate of the valve assembly based on the position information of the third marking component.

[0011] In some embodiments of the first aspect, the wind turbine blade infusion system further includes a fourth marking component disposed along the outer contour of the wind turbine blade skin. The image information also includes position information of the fourth marking component, and the control component is further configured to establish a vector model of the wind turbine blade skin based on the position information of the fourth marking component.

[0012] In some embodiments of the first aspect, the wind turbine blade injection system further includes a pressure reducing device disposed in the delivery pipeline, the pressure reducing device being used to control the pressure of the resin in the delivery pipeline to be within a preset pressure range.

[0013] Secondly, embodiments of this application provide a method for injecting resin into wind turbine blades, which uses a wind turbine blade injection system according to any of the schemes in the first aspect to inject resin into the skin of a wind turbine blade. The method for injecting resin into wind turbine blades includes: The wind turbine blade skin is laid on the blade mold; The flow channel assembly is laid on the side surface of the wind turbine blade skin facing away from the blade mold. The flow channel assembly extends along the axial direction of the wind turbine blade and has multiple connection ports. Multiple connection ports are connected to multiple branch pipes in the filling device one by one. The filling device includes a feeding component, a conveying pipeline and a valve assembly. The feeding component is used to supply resin. The conveying pipeline includes a main pipeline and multiple branch pipes. The main pipeline connects the feeding component and multiple branch pipes. The valve assembly includes multiple valves, and the multiple valves are set one by one with the multiple branch pipes. The blade mold is sealed with a vacuum membrane, and the inside of the blade mold is evacuated using a vacuum pump. Open a portion of the valves to begin resin infusion into the wind turbine blade skin; The monitoring device includes a camera component that captures images of the wind turbine blade skin and obtains image information. The monitoring device includes a camera component and a control component. The control component is connected to the valve assembly and the camera component. The image information includes at least one of the following: resin flow path, the position of the flow channel assembly, and the position of the connection port. The control unit controls the opening and closing of the remaining valves based on at least one of the following: resin flow path information, flow channel assembly position information, and connection port position information.

[0014] In some embodiments of the second aspect, the flow channel assembly includes a first flow channel and a second flow channel, the first flow channel having a first connection port and the second flow channel having a second connection port; the plurality of branch pipes include a first branch pipe and a second branch pipe, and the valve assembly includes a first valve and a second valve, the first valve being disposed in the first branch pipe and the second valve being disposed in the second branch pipe; The steps of laying the flow channel assembly on the side surface of the wind turbine blade skin facing away from the blade mold include: The first and second flow channels are laid at intervals along the circumference of the wind turbine blade on the side surface of the wind turbine blade skin facing away from the blade mold. The steps of connecting multiple connection ports to the multiple branch pipes in the injection device one by one include: Connect the first branch pipe to the first connection port, and connect the second branch pipe to the second connection port; The steps of controlling the opening and closing of the remaining valves based on at least one of the following: resin flow path information, flow channel assembly position information, and connection port position information include: When the first valve is open, and the flow path information of the resin and the position information of the second channel meet the first preset opening condition, the control component controls the second valve to open.

[0015] In some embodiments of the second aspect, a third connection port is also provided on the first flow channel. The first connection port and the third connection port are spaced apart along the axial direction of the wind turbine blade. The multiple branch pipes also include a third branch pipe. The valve assembly also includes a third valve, which is disposed on the third branch pipe. The steps of connecting multiple connection ports to the multiple branch pipes in the injection device one by one include: Connect the third branch pipe to the third connection port; The step of controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the position information of the flow channel assembly, and the position information of the connection port also includes: When the resin flow path information and the position information of the third connection port meet the second preset opening condition, the control component controls the third valve to open.

[0016] In some embodiments of the second aspect, prior to the steps of sealing the blade mold with a vacuum membrane and evacuating the interior of the blade mold using a vacuum pump, the wind turbine blade infusion method further includes: The first marking component is disposed on the surface of the wind turbine blade skin along the circumferential direction of the wind turbine blade. The first marking component is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes the color information of the first marking component. Before the step of the control component controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the position information of the flow channel assembly, and the position information of the connection port, the wind turbine blade grouting method further includes: The control unit optimizes the resin flow path information based on the color information of the first identification component.

[0017] In some embodiments of the second aspect, prior to the steps of sealing the blade mold with a vacuum membrane and evacuating the interior of the blade mold using a vacuum pump, the wind turbine blade infusion method further includes: The second marking component is disposed on the surface of the wind turbine blade skin along the axial direction of the wind turbine blade. The second marking component is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes the color information of the second marking component. Before the step of the control component controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the position information of the flow channel assembly, and the position information of the connection port, the wind turbine blade grouting method further includes: The control unit optimizes the resin flow path information based on the color information of the second identification component.

[0018] In some embodiments of the second aspect, after the steps of sealing the blade mold with a vacuum membrane and evacuating the interior of the blade mold using a vacuum pump, the wind turbine blade infusion method further includes: A third identification component is installed on the side of the vacuum membrane facing away from the wind turbine blade skin and near the connection port. The image information also includes the position information of the third identification component. After opening a portion of the valves among multiple valves to begin resin infusion, the wind turbine blade infusion method also includes: The control unit controls the flow rate of the valve assembly based on the position information of the third identification component.

[0019] In some embodiments of the second aspect, prior to the step of the imaging component in the monitoring device capturing images of the wind turbine blade skin and obtaining image information, the wind turbine blade infusion method further includes: The fourth identification component is set along the outer contour of the wind turbine blade skin, and the image information also includes the position information of the fourth identification component; After the step of capturing images of the wind turbine blade skin and obtaining image information from the camera component in the monitoring device, the wind turbine blade injection method further includes: The control unit establishes a vector model of the wind turbine blade skin based on the position information of the fourth identification component.

[0020] In some embodiments of the second aspect, the wind turbine blade infusion method further includes, prior to the step of opening a portion of the multiple valves to begin resin infusion: Install pressure reducing devices on the delivery pipeline; After opening a portion of the valves among multiple valves to begin resin infusion, the wind turbine blade infusion method also includes: The pressure reducing device controls the pressure of the resin in the delivery pipeline to be within a preset pressure range.

[0021] The wind turbine blade injection system provided in this application, on the one hand, uses visual image recognition to monitor the resin flow in real time, enabling non-contact comprehensive monitoring of the resin injection process. Compared to laying sensors on the surface of the wind turbine blade skin, this avoids interference with the blade skin and resin flow, while also reducing the costs associated with sensor damage and single-use. On the other hand, it automatically controls the opening and closing of valve components based on visual image recognition information, significantly reducing manual intervention and improving the controllability and consistency of the resin injection process. Thus, it effectively improves the injection efficiency and quality of the wind turbine blade injection system.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This application provides a schematic diagram of the layout of a wind turbine blade injection system according to some embodiments; Figure 2 This is a schematic diagram of the layout of another wind turbine blade injection system provided in some embodiments of this application; Figure 3Schematic diagram of the layout of another wind turbine blade injection system provided for some embodiments of this application; Figure 4 A schematic diagram illustrating the layout of another wind turbine blade injection system provided in some embodiments of this application; Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point H; Figure 6 A schematic diagram of the layout of a wind turbine blade injection system is provided for some embodiments of this application; Figure 7 This is a schematic diagram illustrating the layout of another wind turbine blade injection system provided in some embodiments of this application; Figure 8 This is a schematic flowchart illustrating a wind turbine blade injection method provided in some embodiments of this application.

[0024] The reference numerals in the detailed embodiments are as follows: 10. Blade mold; 20. Flow channel assembly; 21. First flow channel; 22. Second flow channel; 30. Connection port; 30a. First connection port; 30b. Second connection port; 30c. Third connection port; 40. Filling device; 41. Feeding component; 42. Conveying pipeline; 421. Main pipeline; 422. Branch pipeline; 422a. First branch pipeline; 422b. Second branch pipeline; 423c. Third branch pipeline; 43. Valve assembly; 431. Valve; 431a. First valve; 431b. Second valve; 431c. Third valve; 50. Vacuum pumping device; 60. Monitoring device; 61. Imaging component; 62. Control component; 70. First marking component; 80. Second marking component; 90. Third marking component; 100. Fourth marking component; 110. Pressure reducing device; S, wind turbine blade skin; X, wind turbine blade axial direction; Y, wind turbine blade circumferential direction. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, rather than to describe a specific order or hierarchy.

[0027] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0030] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0031] In this application, "multiple" means two or more (including two).

[0032] In this application, the term "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering.

[0033] With the development of technology, clean and green energy has become one of the main energy sources today. Wind energy, as a major green energy source, occupies the mainstream of green energy development, and the increasing demand for green energy has led to a rapid increase in the overall size of wind turbine blades. As the global wind power industry rapidly develops towards high power and ultra-long blades, ultra-large wind turbine blade skins are characterized by complex layered structures, large areas, and thick material accumulation.

[0034] Vacuum infusion systems in related technologies typically rely on manual control of each valve's opening and closing and flow rate during the infusion process. This results in poor controllability, is time-consuming and labor-intensive, leading to numerous infusion defects and low infusion efficiency. Furthermore, these technologies often employ sensors laid on the surface of the wind turbine blade skin to detect resin flow; however, the sensors themselves can affect the infusion effect, and they are easily damaged during the infusion process, making them difficult to reuse, thus impacting the quality and cost of the wind turbine blades. Therefore, effectively improving the infusion efficiency and quality of wind turbine blade infusion systems remains an ongoing research direction.

[0035] Based on this, this application provides a wind turbine blade injection system. On the one hand, it achieves real-time monitoring of the resin flow state through visual image recognition, enabling non-contact comprehensive monitoring of the resin injection process. Compared to laying sensors on the surface of the wind turbine blade skin, this avoids interference with the blade skin and resin flow, while also reducing the costs associated with sensor damage and single-use. On the other hand, it automatically controls the opening and closing of valve components based on visual image recognition information, significantly reducing manual intervention and improving the controllability and consistency of the resin injection process. Thus, it effectively improves the injection efficiency and quality of the wind turbine blade injection system.

[0036] The wind turbine blade injection system provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic diagram of the layout of a wind turbine blade injection system provided in some embodiments of this application.

[0038] refer to Figure 1 As shown in the figure, this application provides a wind turbine blade injection system, which includes a blade mold 10, a flow channel assembly 20, an injection device 40, a vacuum device 50, and a monitoring device 60. The blade mold 10 is used to place the wind turbine blade skin S.

[0039] The flow channel assembly 20 is used to be disposed on the side surface of the wind turbine blade skin S facing away from the blade mold 10. The flow channel assembly 20 extends along the axial direction X of the wind turbine blade and has multiple connection ports 30.

[0040] The filling device 40 includes a feeding component 41, a conveying pipeline 42, and a valve 431 assembly 43. The feeding component 41 is used to supply resin. The conveying pipeline 42 includes a main pipeline 421 and multiple branch pipelines 422. The main pipeline 421 connects the feeding component 41 and the multiple branch pipelines 422. The multiple branch pipelines 422 correspond one-to-one with and are connected to multiple connection ports 30. The valve 431 assembly 43 includes multiple valves 431. The multiple valves 431 are arranged one-to-one with the multiple branch pipelines 422.

[0041] The vacuum device 50 includes a vacuum diaphragm and a vacuum pump. The vacuum diaphragm is used to seal the blade mold 10, and the vacuum pump is used to evacuate the interior of the blade mold 10. The monitoring device 60 includes an imaging component 61 and a control component 62. The control component 62 is connected to the valve 431 assembly 43 and the imaging component 61.

[0042] The imaging component 61 is used to capture images of the wind turbine blade skin S and obtain image information, including at least one of the following: resin flow path information, flow channel assembly 20 position information, and connection port 30 position information. The control component 62 is used to control the opening and closing of the remaining valves 431 based on at least one of the following: resin flow path information, flow channel assembly 20 position information, and connection port 30 position information, when some of the valves 431 are open.

[0043] The blade mold 10 is used to place the wind turbine blade skin S. The structure of the blade mold 10 can be customized according to the external dimensions of the wind turbine blade to be formed. The wind turbine blade skin S is usually made of multiple layers of glass fiber fabric, carbon fiber fabric and sandwich material.

[0044] The blade mold 10 can be a rigid mold structure made of metal or composite material, and the inner surface of the blade mold 10 is a cavity surface that matches the shape of the wind turbine blade. The blade mold 10 has a sealed space inside for resin infusion and curing.

[0045] The blade mold 10 can be a single-piece structure or a split structure to facilitate the laying of the wind turbine blade skin S and subsequent demolding.

[0046] The flow channel assembly 20 may include one or more flow channels. As an example, the flow channel assembly 20 may include five flow channels: one flow channel is laid in the middle region along the circumferential Y direction of the wind turbine blade skin S as the main flow channel; one flow channel is set on the side of the main flow channel near the trailing edge of the wind turbine blade skin S; and three flow channels are arranged at intervals on the side of the main flow channel near the leading edge of the wind turbine blade skin S.

[0047] The connection port 30 on the flow channel assembly 20 is used to connect to the branch pipe 422. The flow channel of the flow channel assembly 20 has a cavity inside, and the connection port 30 communicates with the cavity. During the resin injection process, the resin located in the branch pipe 422 enters the cavity inside the flow channel through the connection port 30. Then, the resin located in the cavity flows along the flow channel and flows out from the gap between the flow channel and the wind turbine blade skin S, and diffuses along the surface of the wind turbine blade skin S.

[0048] As an example, in the case where the flow channel assembly 20 includes a flow channel, the flow channel is provided with a plurality of spaced connection ports 30.

[0049] As an example, in the case where the flow channel assembly 20 includes multiple flow channels, each flow channel is provided with at least one connection port 30.

[0050] The feeding component 41 is used to supply resin. The feeding component 41 can be a resin storage tank, a metering pump, or a mixing device with heating function, used to store, heat, stir, and quantitatively output the resin.

[0051] The valve assembly 431 includes multiple valves 431, which are respectively installed on each branch pipe 422 for independently controlling the on / off state of each branch pipe 422 and the amount of resin flow. The valves 431 are connected to the control unit 62 to achieve automatic control, and each of the multiple valves 431 can be controlled independently.

[0052] For example, the control unit 62 and the valve 431 can be connected by a wired signal or a wireless signal.

[0053] Optionally, valve 431 may be, but is not limited to, a solenoid valve or a pneumatic valve.

[0054] The vacuum membrane of the vacuum device 50 covers and seals the opening edge of the blade mold 10, forming a closed space. The vacuum membrane can be made of resin-resistant nylon membrane or composite film material. The vacuum pump is connected to the interior of the blade mold 10 through the air extraction pipeline to create a vacuum inside the blade mold 10, thereby creating a negative pressure environment inside the blade mold 10. Under the action of pressure difference, the resin is forced to penetrate and spread along the gaps between the fiber layers.

[0055] The camera component 61 of the monitoring device 60 can be positioned to observe the area of ​​the wind turbine blade skin S and the flow channel assembly 20, such as on a bracket or transparent observation window mounted above the blade mold 10, for capturing the resin flow state on the surface of the wind turbine blade skin S.

[0056] For example, the shooting component 61 may take pictures at a preset frequency to obtain multiple image information. For example, the shooting component 61 may take pictures once every 1 minute, 2 minutes, 3 minutes, 4 minutes or 5 minutes.

[0057] The control unit 62 connects the valve 431 assembly 43 and the imaging unit 61. When some of the valves 431 are open, the control unit 62 can control the opening or closing of the remaining valves 431 based on the image information captured by the imaging unit 61, so as to achieve precise control of resin injection in zones and stages.

[0058] For example, the resin flow path information can be understood as the resin flow path in the image information, which may include, but is not limited to, the position of the resin flow front, the coverage area of ​​the resin flow, or the continuity of the resin flow path. The position information of the flow channel assembly 20 can be understood as the location of the flow channel assembly 20 in the image information, and the position information of the connection port 30 can be understood as the location of the connection port 30 in the image information.

[0059] As an example, when some of the multiple valves 431 are open, the control unit 62 can control the opening and closing of the remaining valves 431 based on the resin flow path information in the image information. Specifically, taking two valves 431 as an example, when resin infusion begins on the wind turbine blade skin S, one valve 431 is opened first, and the resin flows out from this valve 431 and diffuses along the surface of the wind turbine blade skin S. Simultaneously, the imaging unit 61 captures an image to obtain image information and sends the image information to the control unit 62. The control unit 62 identifies the image information to confirm the coverage area of ​​the resin flow path. When the control unit 62 identifies that the coverage area of ​​the resin flow path reaches a preset ratio with the area of ​​the entire wind turbine blade skin S, it controls the other valve 431 to open.

[0060] As another example, when some of the multiple valves 431 are open, the control unit 62 can control the opening and closing of the remaining valves 431 based on the resin flow path information and the position information of the connection port 30 in the image information. Specifically, taking two valves 431 as an example, when resin injection into the wind turbine blade skin S begins, one valve 431 is opened first. The resin flows out from this valve 431 and diffuses along the surface of the wind turbine blade skin S. Simultaneously, the imaging unit 61 captures an image to obtain image information and sends the image information to the control unit 62. The control unit 62 identifies the image information to confirm the relative relationship between the resin flow path and the position of the connection port 30. When the control unit 62 identifies that the resin flow path has reached the position of the connection port 30 corresponding to another closed valve 431, it controls that valve 431 to open.

[0061] Optionally, the imaging component 61 can be an infrared imaging device, a multispectral imaging device, an industrial camera, or a high-definition camera, and can be used with a light source to enhance contrast. The control component 62 can be a controller with an image recognition algorithm, such as a programmable logic controller, an embedded industrial computer, or a control terminal with an integrated image processing module.

[0062] On the one hand, real-time monitoring of resin flow through visual image recognition enables non-contact, comprehensive monitoring of the resin injection process. Compared to laying sensors on the surface of the wind turbine blade skin S, this avoids interference with the wind turbine blade skin S and resin flow, while also reducing the costs associated with sensor damage and single-use. On the other hand, automatic control of the valve 431 component 43 based on visual image recognition information significantly reduces manual intervention and improves the controllability and consistency of the resin injection process. Thus, the injection efficiency and quality of the wind turbine blade injection system can be effectively improved.

[0063] In some embodiments, the flow channel assembly 20 includes a first flow channel 21 and a second flow channel 22, which are spaced apart along the circumferential Y-axis of the wind turbine blade. A first connection port 30a is provided on the first flow channel 21, and a second connection port 30b is provided on the second flow channel 22. Multiple branch pipes 422 include a first branch pipe 422a and a second branch pipe 422b, with the first branch pipe 422a connected to the first connection port 30a and the second branch pipe 422b connected to the second connection port 30b. Multiple valves 431 include a first valve 431a and a second valve 431b, with the first valve 431a disposed on the first branch pipe 422a and the second valve 431b disposed on the second branch pipe 422b. A control unit is configured to control the second valve 431b to open when the resin flow path information and the position information of the second flow channel 22 meet a first preset opening condition, provided that the first valve 431a is open.

[0064] For example, when resin infusion begins on the wind turbine blade skin S, the first valve 431a is opened first, and the resin flows into the first flow channel 21 from the first connection port 30a and diffuses along the surface of the wind turbine blade skin S. Simultaneously, the imaging component 61 captures images to obtain image information and sends the image information to the control component 62. The control component 62 identifies the image information to confirm the relative relationship between the resin flow path and the position of the second flow channel 22. When the control component 62 identifies that the resin flow path information and the position information of the second flow channel 22 meet the first preset opening condition, it controls the second valve 431b to open, so that the resin flows into the second flow channel 22 from the second connection port 30b and diffuses along the surface of the wind turbine blade skin S.

[0065] The first preset opening condition can be the moment when the resin flow front reaches the location of the second flow channel 22, or it can be the moment when the resin flow front exceeds a preset distance of the second flow channel 22. For example, the preset distance can be, but is not limited to, 100mm, 200mm, or 300mm. In this embodiment, the first preset opening condition can be set according to the actual application and is not specifically limited.

[0066] The above technical solution utilizes the relative relationship between the resin flow path information and the position information of the second flow channel 22 to realize the control logic of the second valve 431b. This enables the feeding timing of the second connection port 30b to be coordinated with the actual resin flow front, thereby achieving adaptive control based on the actual resin flow state. Furthermore, since the opening timing of the second valve 431b is directly related to the actual resin flow path, the wind turbine blade injection system has a stronger adaptability to different resin viscosities, changes in ambient temperature, and differences in the S-structure of the wind turbine blade skin, significantly improving the stability and consistency of the injection process.

[0067] It should be noted that in practical engineering applications, the flow channel assembly 20 is not limited to two flow channel structures, including the first flow channel 21 and the second flow channel 22. Depending on the length of the wind turbine blade, variations in cross-sectional dimensions, the complexity of the layup structure, and the resin flow characteristics, the flow channel assembly 20 can be configured with three, four, five, or even more flow channels spaced apart along the circumferential Y-direction and / or axial direction of the wind turbine blade to form a multi-region zonal infusion structure. Each flow channel can correspond to different structural regions, such as the leading edge region, web region, trailing edge region, or regions with significant thickness variations, thereby achieving more refined resin guidance and distribution control. For example, as... Figure 1 As shown in the figure, five flow channels are illustrated.

[0068] With an increase in the number of flow channels, multiple branch pipes 422 and multiple valves 431 can be set accordingly. Each valve 431 is set on a corresponding branch pipe 422 to independently control the feeding state of the corresponding flow channel. The control logic of valves 431 between different flow channels can be extended with reference to the control logic of the first valve 431a and the second valve 431b described above, and will not be repeated here. In short, provided that at least one upstream flow channel valve 431 is in the open state, the control unit 62 determines whether the first preset opening condition is met based on the relative relationship between the real-time resin flow path information and the position information of the target flow channel, and controls the opening of the corresponding valve 431 or adjusts its opening degree accordingly.

[0069] In some embodiments, a third connection port 30c is further provided on the first flow channel 21, and the first connection port 30a and the third connection port 30c are spaced apart along the axial direction X of the wind turbine blade. The plurality of branch pipes 422 also include a third branch pipe 422c, which is connected to the third connection port 30c. The plurality of valves 431 also include a third valve 431c, which is disposed on the third branch pipe 422c. The control component is further configured to control the third valve 431c to open when the resin flow path information and the position information of the third connection port 30c meet a second preset opening condition, provided that the first valve 431a is open.

[0070] For example, when resin infusion begins on the wind turbine blade skin S, the first valve 431a is opened first, and the resin flows into the first flow channel 21 from the first connection port 30a and diffuses along the surface of the wind turbine blade skin S. Simultaneously, the imaging component 61 captures images to obtain image information and sends the image information to the control component 62. The control component 62 identifies the image information to confirm the relative relationship between the resin flow path and the position of the third connection port 30c. When the control component 62 identifies that the resin flow path information and the position information of the third connection port 30c meet the second preset opening condition, it controls the third valve 431c to open, so that the resin flows into the first flow channel 21 from the third connection port 30c and diffuses along the surface of the wind turbine blade skin S.

[0071] The second preset opening condition can be the moment when the resin flow front reaches the location of the third connector 30c, or it can be the moment when the resin flow front exceeds a preset distance from the third connector 30c. For example, the preset distance can be, but is not limited to, 50mm, 100mm, or 150mm. In this embodiment, the second preset opening condition can be set according to the actual application and is not specifically limited.

[0072] The above technical solution utilizes the relative relationship between the resin flow path information and the position information of the third connection port 30c to realize the control logic of the third valve 431c. This enables the timing of the feed into the third connection port 30c to be coordinated with the actual resin flow front, thereby achieving adaptive control based on the actual resin flow state. Furthermore, since the opening timing of the third valve 431c is directly related to the actual resin flow path, the wind turbine blade injection system has a stronger adaptability to different resin viscosities, changes in ambient temperature, and differences in the S-structure of the wind turbine blade skin, significantly improving the stability and consistency of the injection process.

[0073] It should be noted that in practical engineering applications, a flow channel is not limited to having only two connection ports 30: a first connection port 30a and a third connection port 30c. Depending on the length of the wind turbine blade, variations in cross-sectional dimensions, the complexity of the ply structure, and the resin flow characteristics, a single flow channel can have three, four, five, or even more connection ports 30 arranged at intervals, thereby achieving more precise control over resin flow and distribution. For example, as... Figure 1 As shown in the figure, two of the five flow channels have five connection ports 30, two flow channels have four connection ports 30, and one flow channel has three connection ports 30.

[0074] As the number of connection ports 30 on the same flow channel increases, multiple branch pipes 422 and multiple valves 431 can be set accordingly. Each valve 431 is set on a corresponding branch pipe 422 to independently control the feeding state of the corresponding connection port 30 on the same flow channel. The control logic of valves 431 between different connection ports 30 on the same flow channel can be extended with reference to the control logic of the first valve 431a and the third valve 431c described above, and will not be repeated here. In short, when the valve 431 corresponding to an upstream connection port 30 on the same flow channel is in the open state, the control unit 62 determines whether the second preset opening condition is met based on the relative relationship between the real-time resin flow path information and the position information of the target connection port 30, and controls the opening of the corresponding valve 431 or adjusts its opening degree accordingly.

[0075] In some embodiments, the control component 62 can also be used to control the opening and closing of the remaining valves 431 according to a first preset time condition when a portion of the valves 431 are open.

[0076] For example, taking two valves 431 as an example, when resin infusion begins on the wind turbine blade skin S, one valve 431 is opened first, and the resin flows out from this valve 431 and diffuses along the surface of the wind turbine blade skin S. After a first preset time condition has elapsed, the control unit 62 controls the other valve 431 to open. The preset time can be, but is not limited to, 10 minutes, 15 minutes, or 20 minutes, and can be selected according to the actual application.

[0077] The control unit 62 can not only control the opening of each valve 431 based on the image information acquired by the imaging unit 61, but also actively control the closing process of the valve 431 to achieve closed-loop regulation of the entire resin injection process.

[0078] It should be noted that, based on the valve 431 opening control logic described above, the control component 62's control of valve 431 closing can also be based on image information analysis and preset condition judgment, thereby realizing a closed-loop regulation mechanism corresponding to the opening control. In short, the control component 62 determines whether the target area has reached the predetermined filling completion condition based on at least one of the resin flow path information, the position information of the flow channel assembly 20, and the position information of the connection port 30, and controls valve 431 to close accordingly. The specific control logic mechanism can be found above and will not be repeated here.

[0079] In some embodiments, the control component 62 is used to control the closing of the valve 431 according to a second preset time condition.

[0080] For example, when resin infusion begins on the wind turbine blade skin S, a valve 431 is opened, and resin flows out from the valve 431 and diffuses along the surface of the wind turbine blade skin S. After a second preset time condition has elapsed, the control unit 62 controls the valve 431 to close. The second preset time condition can be, but is not limited to, 30 minutes, 60 minutes, or 90 minutes, and can be selected according to the actual application.

[0081] In some embodiments, the control component 62 is used to control the closing of valve 431 according to the linkage logic between multiple valves 431.

[0082] For example, taking two valves 431 as an example, when resin infusion begins on the wind turbine blade skin S, one valve 431 is opened, and the resin flows out from the valve 431 and diffuses along the surface of the wind turbine blade skin S. When the other valve 431 is opened, the control unit 62 synchronously controls the previously opened valve 431 to close.

[0083] Furthermore, in the case of multiple valves 431, the closing of valve 431 can also form a linkage control with the opening or flow regulation of other valves 431. For example, when the valve 431 corresponding to a certain flow channel is closed, the control component 62 can automatically adjust the opening degree of other valves 431 that are still in the open state to balance the overall injection pressure distribution.

[0084] Figure 2 This is a schematic diagram illustrating the layout of another wind turbine blade injection system provided in some embodiments of this application.

[0085] Continue to refer to Figure 2In some embodiments, the wind turbine blade infusion system further includes a first marking component 70, which is disposed on the surface of the wind turbine blade skin S and extends along the circumferential direction Y of the wind turbine blade. The first marking component 70 is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes color information of the first marking component 70, and the control component 62 is further configured to optimize the resin flow path information based on the color information of the first marking component 70.

[0086] When the resin flows through the first marking component 70, the color of the first marking component 70 will change after being soaked in the resin, making it easier for the imaging component 61 to capture and collect data, and making it easier for the control component 62 to identify, thereby improving the accuracy of the monitoring device 60 in identifying the flow path of the resin.

[0087] For example, the imaging component 61 continuously acquires image information during the resin infusion process, and the image information also includes the color information of the first identification component 70. After receiving the image information, the control component 62 performs color recognition and analysis on the area of ​​the first identification component 70 using an image processing algorithm to determine whether the area has been impregnated with resin. The control component 62 is also used to correct or optimize the original resin flow path information based on the color information of the first identification component 70. For example, during image recognition, the position of the resin flow front can be determined by recognizing changes in the color of the first identification component 70, thereby improving the overall recognition accuracy.

[0088] Optionally, the first marking component 70 may be, but is not limited to, absorbent paper, release cloth, or fiber tape.

[0089] The above technical solution provides a direct and high-contrast visual indication signal of the resin flow state by setting a first marking component 70 on the surface of the wind turbine blade skin S and utilizing its color change upon contact with the resin. Compared to image recognition methods that rely solely on the color of the resin itself, this structure can significantly improve the accuracy and stability of resin flow front identification, especially when the resin has high transparency or the background color of the skin is complex, it can still maintain good recognition performance.

[0090] Furthermore, by incorporating the color information of the first identification component 70 into the resin flow path recognition algorithm, the control component 62 optimizes and calibrates the resin flow path information, effectively reducing recognition errors and improving the accuracy of determining the timing of valve 431's opening and closing. This enables more refined zoned injection control, reduces the risk of insufficient or excessive local wetting, and enhances the controllability and consistency of the wind turbine blade injection process.

[0091] In summary, by introducing the first identification component 70 and its color feedback mechanism, the wind turbine blade injection system can maintain the advantages of non-contact monitoring while further enhancing the reliability and accuracy of image recognition, thereby improving the overall injection quality and production stability.

[0092] In some embodiments, the number of first marking components 70 is multiple, and the multiple first marking components 70 are arranged at X intervals along the axial direction of the wind turbine blade, which can further improve the recognition accuracy of the resin flow front.

[0093] In some embodiments, the first marking member 70 has a dimension of 10mm-300mm along the axial direction X of the wind turbine blade.

[0094] Figure 3 This is a schematic diagram illustrating the layout of another wind turbine blade injection system provided in some embodiments of this application.

[0095] Continue to refer to Figure 3 In some embodiments, the wind turbine blade infusion system further includes a second marking component 80, which is disposed on the surface of the wind turbine blade skin S and extends along the axial direction X of the wind turbine blade. The second marking component 80 is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes color information of the second marking component 80, and the control component 62 is further configured to optimize the resin flow path information based on the color information of the second marking component 80.

[0096] When the resin flows through the second marking component 80, the color of the second marking component 80 will change after being soaked in the resin, making it easier for the imaging component 61 to capture and collect data, and making it easier for the control component 62 to identify, thereby improving the accuracy of the monitoring device 60 in identifying the flow path of the resin.

[0097] For example, the imaging component 61 continuously acquires image information during the resin infusion process, and the image information also includes the color information of the second identification component 80. After receiving the image information, the control component 62 performs color recognition and analysis on the area of ​​the second identification component 80 using an image processing algorithm to determine whether the area has been impregnated with resin. The control component 62 is also used to correct or optimize the original resin flow path information based on the color information of the second identification component 80. For example, during image recognition, the position of the resin flow front can be determined by recognizing changes in the color of the second identification component 80, thereby improving the overall recognition accuracy.

[0098] Optionally, the second marking component 80 may be, but is not limited to, absorbent paper, release cloth, or fiber tape.

[0099] The above technical solution provides a direct and high-contrast visual indication signal of the resin flow state by setting a second marking component 80 on the surface of the wind turbine blade skin S and utilizing its color change upon contact with the resin. Compared to image recognition methods that rely solely on the color of the resin itself, this structure significantly improves the accuracy and stability of resin flow front identification, especially when the resin has high transparency or the skin background color is complex, maintaining good recognition performance.

[0100] Furthermore, by incorporating the color information of the second identification component 80 into the resin flow path recognition algorithm, the control component 62 optimizes and calibrates the resin flow path information, effectively reducing recognition errors and improving the accuracy of determining the timing of valve 431's opening and closing. This enables more refined zoned injection control, reduces the risk of insufficient or excessive local wetting, and enhances the controllability and consistency of the wind turbine blade injection process.

[0101] In summary, by introducing the second identification component 80 and its color feedback mechanism, the wind turbine blade injection system can maintain the advantages of non-contact monitoring while further enhancing the reliability and accuracy of image recognition, thereby improving the overall injection quality and production stability.

[0102] In some embodiments, the number of second marking components 80 is multiple, and the multiple second marking components 80 are arranged at Y intervals along the circumferential direction of the wind turbine blade, which can further improve the recognition accuracy of the resin flow front.

[0103] In some embodiments, the second marking component 80 has a dimension of 10mm-300mm along the circumferential Y direction of the wind turbine blade.

[0104] Figure 4 This is a schematic diagram illustrating the layout of another wind turbine blade injection system provided in some embodiments of this application. Figure 5 for Figure 4 A magnified schematic diagram of the structure at point H.

[0105] Continue to refer to Figure 4 and Figure 5 In some embodiments, the wind turbine blade injection system further includes a third identification component 90, which is disposed on the side of the vacuum membrane facing away from the wind turbine blade skin S and near the connection port 30. The image information also includes the position information of the third identification component 90, and the control component 62 is further used to control the flow rate of the valve 431 assembly 43 according to the position information of the third identification component 90.

[0106] For example, before resin infusion begins, the position of the third marking component 90 near the injection port is defined as the initial position. During the infusion process, when resin blockage occurs near the injection port, local resin accumulation or flow obstruction causes local bulging of the vacuum membrane, thereby causing spatial displacement of the third marking component 90. The imaging component 61 continuously acquires image information during the resin infusion process, and the image information also includes the position information of the third marking component 90. The control component 62 is also used to control the flow rate of the valve 431 assembly 43 based on the position information of the third marking component 90.

[0107] For example, when the displacement of the third marking component 90 relative to its initial position reaches or exceeds a preset threshold (e.g., 5 mm), it can be determined that resin blockage has occurred at the injection port. At this time, the control component 62 can control the corresponding valve 431 to reduce its opening or temporarily close it to reduce the local resin input and alleviate the resin blockage. When the displacement of the third marking component 90 relative to its initial position returns to the normal range, the control component 62 can control the corresponding valve 431 to return to its normal opening.

[0108] Optionally, the third marking component 90 can be a marking block, marking patch, scale strip, or marking layer with a specific pattern, and its material can be a lightweight plastic sheet, reflective sticker, or a thin sheet structure with obvious contrasting colors.

[0109] The above technical solution, by setting up a third identification component 90 and utilizing its displacement characteristic when the vacuum membrane bulges, achieves visual monitoring of resin blockage at the injection port. The control component 62 dynamically adjusts the flow rate of valve 431 assembly 43 based on the position information of the third identification component 90, enabling the wind turbine blade injection system to intervene in the early stages of resin blockage, reducing local resin accumulation and preventing problems such as vacuum membrane rupture or uneven resin wetting. Thus, real-time visual monitoring and adaptive flow adjustment of local abnormal states at the injection port can be achieved, effectively improving the stability, reliability, and quality of the wind turbine blade injection process.

[0110] Figure 6 This is a schematic diagram of the layout of a wind turbine blade injection system provided for some embodiments of this application.

[0111] Continue to refer to Figure 6 In some embodiments, the wind turbine blade infusion system further includes a fourth identification component 100, which is disposed along the outer contour of the wind turbine blade skin S. The image information also includes the position information of the fourth identification component 100, and the control component 62 is further configured to establish a vector model of the wind turbine blade skin S based on the position information of the fourth identification component 100.

[0112] The fourth marking component 100 is disposed along the outer contour of the wind turbine blade skin S to mark the boundary position of the wind turbine blade skin S. "Disposed along the outer contour of the wind turbine blade skin S" means that the fourth marking component 100 is located in the edge region of the wind turbine blade skin S. It can extend continuously along the leading edge, trailing edge, and root contour of the wind turbine blade skin S, or multiple marking points can be arranged at intervals along the outer perimeter to form a complete contour identification reference for the wind turbine blade skin S.

[0113] Optionally, the fourth marking component 100 can be a marking block, marking patch, scale strip, or marking layer with a specific pattern, and its material can be a lightweight plastic sheet, reflective sticker, or a thin sheet structure with obvious contrasting colors.

[0114] For example, after receiving image information, the control unit 62 extracts the position information of the fourth identification component 100 through an image recognition algorithm, and establishes a vector model of the wind turbine blade skin S based on the extracted position information. Specifically, the control unit 62 can convert the identified position information of the fourth identification component 100 into coordinate data, and construct a vector model of the wind turbine blade skin S through a curve fitting algorithm, spline interpolation algorithm, or polygon approximation algorithm. This vector model can serve as the basic data model for subsequent analysis of resin flow path information, flow channel component 20 position information, and connection port 30 position information, as well as for control logic judgment.

[0115] The above technical solution improves the accuracy of the creation of the vector model of the wind turbine blade skin S by setting a fourth identification component 100 on the outer contour of the wind turbine blade skin S and using its position information to establish a vector model of the wind turbine blade skin S, thereby improving the overall control accuracy of the wind turbine blade injection system.

[0116] Figure 7 This is a schematic diagram illustrating the layout of another wind turbine blade injection system provided in some embodiments of this application.

[0117] Continue to refer to Figure 7 In some embodiments, the wind turbine blade injection system further includes a pressure reducing device 110, which is disposed in the delivery pipeline 42 and is used to control the pressure of the resin in the delivery pipeline 42 to be within a preset pressure range.

[0118] For example, the preset pressure range can be calibrated according to the S-structure of the wind turbine blade skin, the vacuum suction intensity, and the resin viscosity. For instance, the resin delivery pressure in the delivery pipeline 42 can be controlled between 50 kPa and 100 kPa to reduce the risk of resin blockage at the injection port, which could cause the vacuum membrane to be lifted.

[0119] Optionally, the pressure reducing device 110 may be, but is not limited to, a mechanical pressure reducing valve, a proportional pressure regulating valve, or an electronic control pressure regulating module.

[0120] The above technical solution, by setting a pressure reducing device 110 in the delivery pipeline 42, ensures that the resin is always within a preset pressure range before entering the flow channel assembly 20. This can effectively avoid abnormal local pressure at the injection port caused by pressure fluctuations or excessively high instantaneous pressure of the resin in the delivery pipeline 42, and effectively reduce the risk of the vacuum membrane being lifted due to the resin pressure at the injection port being higher than atmospheric pressure.

[0121] Specifically, when the resin pressure at the injection port is higher than atmospheric pressure, the vacuum membrane can be locally bulged, affecting the vacuum sealing effect and even causing resin leakage or uneven wetting. By limiting the resin delivery pressure in the delivery pipeline 42 through the pressure reducing device 110, the risk of vacuum membrane bulging can be significantly reduced, improving the reliability and stability of the injection process.

[0122] Furthermore, with the resin delivery pressure within the delivery pipeline 42 under stable control, the reliance on the nozzle anomaly monitoring structure can be reduced to some extent. For example, if the resin delivery pressure within the delivery pipeline 42 is always controlled, the need for a third marking component 90 to monitor nozzle anomalies can be eliminated, thereby simplifying the system structure, improving overall filling efficiency, and reducing costs.

[0123] In some embodiments, the pressure reducing device 110 can also be electrically connected to the control component 62, and monitor the pressure in the delivery pipeline 42 in real time by setting a pressure sensor, and make dynamic adjustments according to the feedback signal to achieve closed-loop control.

[0124] In some embodiments, the filling device 40 further includes a buffer bag, which is connected to both ends of the delivery pipeline 42 via the feeding component 41. The feeding component 41 can automatically open and close according to the amount of resin (volume or weight) in the buffer bag to keep the delivery pipeline 42 always full of resin and prevent it from bursting.

[0125] On the one hand, the buffer bag can absorb pressure fluctuations generated during the start-up and shutdown of the feeding component 41, balancing instantaneous flow changes and thus maintaining stable pressure within the delivery pipeline 42. On the other hand, it ensures that the delivery pipeline 42 is always filled with resin, effectively preventing flow discontinuities or air bubble defects caused by air in the pipeline. Furthermore, when the pipeline pressure in the filling device 40 increases due to the closure of valve 431 or a sudden decrease in flow, the buffer bag can absorb some of the pressure through volume expansion, thereby reducing the risk of pipe bursting.

[0126] In some embodiments, the resin pressure output by the feeding component 41 does not exceed 2 MPa.

[0127] In some embodiments, the resin temperature output by the feeding component 41 is set between 28°C and 40°C.

[0128] Figure 8 This is a schematic flowchart illustrating a wind turbine blade injection method provided in some embodiments of this application.

[0129] Continue to refer to Figure 8 According to some embodiments of this application, this application also provides a wind turbine blade injection method, which uses the wind turbine blade injection system provided by any of the above schemes to inject resin into the wind turbine blade skin S. The wind turbine blade injection method includes: Step 01: Lay the wind turbine blade skin S onto the blade mold 10; Step 02: Lay the flow channel assembly 20 on the side surface of the wind turbine blade skin S facing away from the blade mold 10. The flow channel assembly 20 extends along the axial direction X of the wind turbine blade and has multiple connection ports 30. Step 03: Connect the multiple connection ports 30 to the multiple branch pipes 422 in the filling device 40 one by one. The filling device 40 includes a feeding component 41, a conveying pipe 42, and a valve 431 assembly 43. The feeding component 41 is used to supply resin. The conveying pipe 42 includes a main pipe 421 and multiple branch pipes 422. The main pipe 421 connects the feeding component 41 and the multiple branch pipes 422. The valve 431 assembly 43 includes multiple valves 431. The multiple valves 431 are set one by one with the multiple branch pipes 422. Step 04: Seal the blade mold 10 with a vacuum membrane and evacuate the inside of the blade mold 10 using a vacuum pump. Step 05: Open a portion of the multiple valves 431 to begin resin injection into the wind turbine blade skin S. Step 06: The imaging component 61 in the monitoring device 60 captures the wind turbine blade skin S and obtains image information. The monitoring device 60 includes an imaging component 61 and a control component 62. The control component 62 is connected to the valve 431 assembly 43 and the imaging component 61. The image information includes at least one of the following: resin flow path, position of flow channel assembly 20, and position of connection port 30. Step 07: The control unit 62 controls the opening and closing of the remaining valves 431 based on at least one of the resin flow path information, the position information of the flow channel assembly 20, and the position information of the connection port 30.

[0130] On the one hand, real-time monitoring of resin flow through visual image recognition enables non-contact, comprehensive monitoring of the resin injection process. Compared to laying sensors on the surface of the wind turbine blade skin S, this avoids interference with the wind turbine blade skin S and resin flow, while also reducing the costs associated with sensor damage and single-use. On the other hand, automatic control of the valve 431 component 43 based on visual image recognition information significantly reduces manual intervention and improves the controllability and consistency of the resin injection process. Thus, the injection efficiency and quality of the wind turbine blade injection system can be effectively improved.

[0131] In some embodiments, the flow channel assembly 20 includes a first flow channel 21 and a second flow channel 22, the first flow channel 21 having a first connection port 30a and the second flow channel 22 having a second connection port 30b; the plurality of branch pipes 422 include a first branch pipe 422a and a second branch pipe 422b; the valve 431 assembly 43 includes a first valve 431a and a second valve 431b, the first valve 431a being disposed on the first branch pipe 422a and the second valve 431b being disposed on the second branch pipe 422b; The steps of laying the flow channel assembly 20 on the side surface of the wind turbine blade skin S facing away from the blade mold 10 include: The first flow channel 21 and the second flow channel 22 are laid at intervals along the circumferential Y direction of the wind turbine blade on the side surface of the wind turbine blade skin S facing away from the blade mold 10. The steps of connecting the multiple connection ports 30 to the multiple branch pipes 422 in the injection device 40 one by one include: Connect the first branch pipe 422a to the first connection port 30a, and connect the second branch pipe 422b to the second connection port 30b; The steps by which control unit 62 controls the opening and closing of the remaining valves 431 based on at least one of the resin flow path information, the position information of flow channel assembly 20, and the position information of connection port 30 include: When the first valve 431a is open, and the flow path information of the resin and the position information of the second channel 22 meet the first preset opening conditions, the control unit 62 controls the second valve 431b to open.

[0132] The above technical solution utilizes the relative relationship between the resin flow path information and the position information of the second flow channel 22 to realize the control logic of the second valve 431b. This enables the feeding timing of the second connection port 30b to be coordinated with the actual resin flow front, thereby achieving adaptive control based on the actual resin flow state. Furthermore, since the opening timing of the second valve 431b is directly related to the actual resin flow path, the wind turbine blade injection system has a stronger adaptability to different resin viscosities, changes in ambient temperature, and differences in the S-structure of the wind turbine blade skin, significantly improving the stability and consistency of the injection process.

[0133] In some embodiments, a third connection port 30c is also provided on the first flow channel 21. The first connection port 30a and the third connection port 30c are arranged at intervals along the axial direction X of the wind turbine blade. The multiple branch pipes 422 also include a third branch pipe 422c. The valve 431 assembly 43 also includes a third valve 431c. The third valve 431c is disposed on the third branch pipe 422c. The steps of connecting the multiple connection ports 30 to the multiple branch pipes 422 in the injection device 40 one by one include: Connect the third branch pipe 422c to the third connection port 30c; The step of controlling the opening and closing of the remaining valves 431 based on at least one of the resin flow path information, the position information of the flow channel assembly 20, and the position information of the connection port 30 further includes: When the resin flow path information and the position information of the third connection port 30c meet the second preset opening condition, the control component 62 controls the third valve 431c to open.

[0134] The above technical solution utilizes the relative relationship between the resin flow path information and the position information of the third connection port 30c to realize the control logic of the third valve 431c. This enables the timing of the feed into the third connection port 30c to be coordinated with the actual resin flow front, thereby achieving adaptive control based on the actual resin flow state. Furthermore, since the opening timing of the third valve 431c is directly related to the actual resin flow path, the wind turbine blade injection system has a stronger adaptability to different resin viscosities, changes in ambient temperature, and differences in the S-structure of the wind turbine blade skin, significantly improving the stability and consistency of the injection process.

[0135] In some embodiments, prior to the steps of sealing the blade mold 10 with a vacuum membrane and evacuating the interior of the blade mold 10 using a vacuum pump, the wind turbine blade infusion method further includes: The first marking component 70 is disposed on the surface of the wind turbine blade skin S along the circumferential Y direction of the wind turbine blade. The first marking component 70 is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes the color information of the first marking component 70. Before the step of the control unit 62 controlling the opening and closing of the remaining valves 431 based on at least one of the resin flow path information, the position information of the flow channel assembly 20, and the position information of the connection port 30, the wind turbine blade injection method further includes: The control unit 62 optimizes the resin flow path information based on the color information of the first identification unit 70.

[0136] The above technical solution provides a direct and high-contrast visual indication signal of the resin flow state by setting a first marking component 70 on the surface of the wind turbine blade skin S and utilizing its color change upon contact with the resin. Compared to image recognition methods that rely solely on the color of the resin itself, this structure can significantly improve the accuracy and stability of resin flow front identification, especially when the resin has high transparency or the background color of the skin is complex, it can still maintain good recognition performance.

[0137] In some embodiments, prior to the steps of sealing the blade mold 10 with a vacuum membrane and evacuating the interior of the blade mold 10 using a vacuum pump, the wind turbine blade infusion method further includes: The second marking component 80 is disposed on the surface of the wind turbine blade skin S along the axial direction X of the wind turbine blade. The second marking component 80 is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes the color information of the second marking component 80. Before the step of the control unit 62 controlling the opening and closing of the remaining valves 431 based on at least one of the resin flow path information, the position information of the flow channel assembly 20, and the position information of the connection port 30, the wind turbine blade injection method further includes: The control unit 62 optimizes the resin flow path information based on the color information of the second identification unit 80.

[0138] The above technical solution provides a direct and high-contrast visual indication signal of the resin flow state by setting a second marking component 80 on the surface of the wind turbine blade skin S and utilizing its color change upon contact with the resin. Compared to image recognition methods that rely solely on the color of the resin itself, this structure significantly improves the accuracy and stability of resin flow front identification, especially when the resin has high transparency or the skin background color is complex, maintaining good recognition performance.

[0139] In some embodiments, after the steps of sealing the blade mold 10 with a vacuum membrane and evacuating the interior of the blade mold 10 using a vacuum pump, the wind turbine blade injection method further includes: A third marking component 90 is installed on the side of the vacuum membrane facing away from the wind turbine blade skin S and near the connection port 30. The image information also includes the position information of the third marking component 90. After opening a portion of the multiple valves 431 to begin resin infusion, the wind turbine blade infusion method further includes: The control unit 62 controls the flow rate of the valve 431 assembly 43 based on the position information of the third identification unit 90.

[0140] The above technical solution, by setting up a third identification component 90 and utilizing its displacement characteristic when the vacuum membrane bulges, achieves visual monitoring of resin blockage at the injection port. The control component 62 dynamically adjusts the flow rate of valve 431 assembly 43 based on the position information of the third identification component 90, enabling the wind turbine blade injection system to intervene in the early stages of resin blockage, reducing local resin accumulation and preventing problems such as vacuum membrane rupture or uneven resin wetting. Thus, real-time visual monitoring and adaptive flow adjustment of local abnormal states at the injection port can be achieved, effectively improving the stability, reliability, and quality of the wind turbine blade injection process.

[0141] In some embodiments, prior to the step of the imaging component 61 in the monitoring device 60 capturing the wind turbine blade skin S and obtaining image information, the wind turbine blade infusion method further includes: The fourth identification component 100 is set along the outer contour of the wind turbine blade skin S, wherein the image information also includes the position information of the fourth identification component 100; After the step of capturing images of the wind turbine blade skin S and obtaining image information by the imaging component 61 in the monitoring device 60, the wind turbine blade injection method further includes: The control unit 62 establishes a vector model of the wind turbine blade skin S based on the position information of the fourth identification unit 100.

[0142] The above technical solution improves the accuracy of the creation of the vector model of the wind turbine blade skin S by setting a fourth identification component 100 on the outer contour of the wind turbine blade skin S and using its position information to establish a vector model of the wind turbine blade skin S, thereby improving the overall control accuracy of the wind turbine blade injection system.

[0143] In some embodiments, before opening a portion of the multiple valves 431 to begin the resin infusion step, the wind turbine blade infusion method further includes: A pressure reducing device 110 is installed on the delivery pipeline 42; After opening a portion of the multiple valves 431 to begin resin infusion, the wind turbine blade infusion method further includes: The pressure reducing device 110 controls the pressure of the resin in the delivery pipeline 42 to be within a preset pressure range.

[0144] The above technical solution, by setting a pressure reducing device 110 in the delivery pipeline 42, ensures that the resin is always within a preset pressure range before entering the flow channel assembly 20. This can effectively avoid abnormal local pressure at the injection port caused by pressure fluctuations or excessively high instantaneous pressure of the resin in the delivery pipeline 42, and effectively reduce the risk of the vacuum membrane being lifted due to the resin pressure at the injection port being higher than atmospheric pressure.

[0145] Specifically, when the resin pressure at the injection port is higher than atmospheric pressure, the vacuum membrane can be locally bulged, affecting the vacuum sealing effect and even causing resin leakage or uneven wetting. By limiting the resin delivery pressure in the delivery pipeline 42 through the pressure reducing device 110, the risk of vacuum membrane bulging can be significantly reduced, improving the reliability and stability of the injection process.

[0146] Furthermore, with the resin delivery pressure within the delivery pipeline 42 under stable control, the reliance on the nozzle anomaly monitoring structure can be reduced to some extent. For example, if the resin delivery pressure within the delivery pipeline 42 is always controlled, the need for a third marking component 90 to monitor nozzle anomalies can be eliminated, thereby simplifying the system structure, improving overall filling efficiency, and reducing costs.

[0147] It should be noted that the specific implementation details of the wind turbine blade injection method provided in this application embodiment can be referred to the corresponding embodiment of the wind turbine blade injection system described above, and have the same technical details and corresponding technical effects, which will not be repeated here.

[0148] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. All technical features and optional technical features of this application can be combined to form new technical solutions.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wind turbine blade injection system, characterized in that, include: Blade mold, used to place the skin of wind turbine blades; A flow channel assembly is provided on the side surface of the wind turbine blade skin facing away from the blade mold. The flow channel assembly extends along the axial direction of the wind turbine blade and has multiple connection ports. The filling device includes a feeding component, a conveying pipeline, and a valve assembly. The feeding component is used to supply resin. The conveying pipeline includes a main pipeline and multiple branch pipelines. The main pipeline connects the feeding component and the multiple branch pipelines. Each of the multiple branch pipelines corresponds to and is connected to a multiple connection port. The valve assembly includes multiple valves, which are configured to correspond to each of the multiple branch pipelines. A vacuuming device includes a vacuum membrane and a vacuum pump, wherein the vacuum membrane is used to seal the blade mold, and the vacuum pump is used to evacuate the interior of the blade mold; A monitoring device includes a camera component and a control component, wherein the control component is connected to the valve assembly and the camera component; The imaging component is used to capture images of the wind turbine blade skin and obtain image information, the image information including at least one of the resin flow path information, the position information of the flow channel assembly, and the position information of the connection port; The control component is used to control the opening and closing of the remaining valves based on at least one of the following: resin flow path information, flow channel assembly position information, and connection port position information, when a portion of the valves are open.

2. The wind turbine blade injection system according to claim 1, characterized in that, The flow channel assembly includes a first flow channel and a second flow channel, which are arranged circumferentially along the wind turbine blade. The first flow channel has a first connection port, and the second flow channel has a second connection port. The plurality of branch pipes include a first branch pipe and a second branch pipe, wherein the first branch pipe is connected to the first connection port and the second branch pipe is connected to the second connection port; The plurality of valves include a first valve and a second valve, wherein the first valve is disposed in the first branch pipe and the second valve is disposed in the second branch pipe; The control component is used to control the second valve to open when the flow path information of the resin and the position information of the second channel meet a first preset opening condition, provided that the first valve is open.

3. The wind turbine blade injection system according to claim 2, characterized in that, The first flow channel is also provided with a third connection port, and the first connection port and the third connection port are spaced apart along the axial direction of the wind turbine blade; The plurality of branch pipes also include a third branch pipe, which is connected to the third connection port; The plurality of valves also includes a third valve, which is disposed in the third branch pipeline; The control component is also used to control the third valve to open when the flow path information of the resin and the position information of the third connection port meet a second preset opening condition, provided that the first valve is open.

4. The wind turbine blade injection system according to claim 1, characterized in that, The wind turbine blade injection system further includes a first marking component, which is disposed on the surface of the wind turbine blade skin and extends circumferentially along the wind turbine blade. The first marking component is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes the color information of the first identification component, and the control component is further configured to optimize the flow path information of the resin based on the color information of the first identification component.

5. The wind turbine blade injection system according to claim 1, characterized in that, The wind turbine blade injection system further includes a second marking component, which is disposed on the surface of the wind turbine blade skin and extends along the axial direction of the wind turbine blade. The second marking component is configured to undergo a color-changing reaction upon contact with the resin. The image information also includes the color information of the second identification component, and the control component is further configured to optimize the flow path information of the resin based on the color information of the second identification component.

6. The wind turbine blade injection system according to claim 1, characterized in that, The wind turbine blade injection system also includes a third marking component, which is disposed on the side of the vacuum membrane facing away from the wind turbine blade skin and near the connection port; The image information also includes the position information of the third identification component, and the control component is further used to control the flow rate of the valve assembly based on the position information of the third identification component.

7. The wind turbine blade injection system according to claim 1, characterized in that, The wind turbine blade injection system also includes a fourth marking component, which is disposed along the outer contour of the wind turbine blade skin; The image information also includes the position information of the fourth identification component, and the control component is further used to establish a vector model of the wind turbine blade skin based on the position information of the fourth identification component.

8. The wind turbine blade injection system according to claim 1, characterized in that, The wind turbine blade injection system also includes a pressure reducing device, which is installed in the delivery pipeline and is used to control the pressure of the resin in the delivery pipeline to be within a preset pressure range.

9. A method for injecting water into wind turbine blades, characterized in that, The wind turbine blade skin is infused with resin using the wind turbine blade infusion system as described in any one of claims 1-8, wherein the wind turbine blade infusion method comprises: The wind turbine blade skin is laid on the blade mold; The flow channel assembly is laid on the side surface of the wind turbine blade skin facing away from the blade mold, wherein the flow channel assembly extends along the axial direction of the wind turbine blade and has multiple connection ports. The multiple connection ports are correspondingly connected to the multiple branch pipes in the filling device. The filling device includes a feeding component, a conveying pipeline, and a valve assembly. The feeding component is used to supply resin. The conveying pipeline includes a main pipeline and multiple branch pipes. The main pipeline connects the feeding component and the multiple branch pipes. The valve assembly includes multiple valves, and the multiple valves are arranged correspondingly to the multiple branch pipes. The blade mold is sealed with a vacuum membrane, and the interior of the blade mold is evacuated using the vacuum pump. Open a portion of the valves to begin resin infusion into the wind turbine blade skin; The monitoring device includes a camera component that captures images of the wind turbine blade skin and obtains image information. The monitoring device includes the camera component and a control component. The control component is connected to the valve assembly and the camera component. The image information includes at least one of the following: resin flow path, the position of the flow channel assembly, and the position of the connection port. The control unit controls the opening and closing of the remaining valves based on at least one of the resin flow path information, the position information of the flow channel assembly, and the position information of the connection port.

10. The wind turbine blade injection method according to claim 9, characterized in that, The flow channel assembly includes a first flow channel and a second flow channel, the first flow channel having a first connection port and the second flow channel having a second connection port; the plurality of branch pipes include a first branch pipe and a second branch pipe; the valve assembly includes a first valve and a second valve, the first valve being disposed in the first branch pipe and the second valve being disposed in the second branch pipe. The step of laying the flow channel assembly on the side surface of the wind turbine blade skin facing away from the blade mold includes: The first flow channel and the second flow channel are laid at intervals along the circumference of the wind turbine blade on the side surface of the wind turbine blade skin facing away from the blade mold. The step of connecting the plurality of connection ports to the plurality of branch pipes in the injection device one by one includes: Connect the first branch pipe to the first connection port, and connect the second branch pipe to the second connection port; The step of the control component controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the position information of the flow channel assembly, and the position information of the connection port includes: When the first valve is open, and the flow path information of the resin and the position information of the second channel meet the first preset opening condition, the control component controls the second valve to open.

11. The wind turbine blade injection method according to claim 10, characterized in that, The first flow channel is also provided with a third connection port, and the first connection port and the third connection port are spaced apart along the axial direction of the wind turbine blade. The plurality of branch pipes also include a third branch pipe, and the valve assembly also includes a third valve, which is disposed on the third branch pipe. The step of connecting the plurality of connection ports to the plurality of branch pipes in the injection device one by one includes: Connect the third branch pipe to the third connection port; The step of the control component controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the flow channel assembly position information, and the connection port position information further includes: When the flow path information of the resin and the position information of the third connection port meet the second preset opening condition, the control component controls the third valve to open.

12. The wind turbine blade injection method according to claim 9, characterized in that, Prior to the steps of sealing the blade mold with a vacuum membrane and evacuating the interior of the blade mold using the vacuum pump, the wind turbine blade injection method further includes: A first marking component is disposed on the surface of the wind turbine blade skin along the circumferential direction of the wind turbine blade, wherein the first marking component is configured to undergo a color-changing reaction upon contact with the resin, and the image information also includes the color information of the first marking component; Before the step of the control component controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the flow channel assembly position information, and the connection port position information, the wind turbine blade injection method further includes: The control component optimizes the resin flow path information based on the color information of the first identification component.

13. The wind turbine blade injection method according to claim 9, characterized in that, Prior to the steps of sealing the blade mold with a vacuum membrane and evacuating the interior of the blade mold using the vacuum pump, the wind turbine blade injection method further includes: A second marking component is disposed on the surface of the wind turbine blade skin along the axial direction of the wind turbine blade, wherein the second marking component is configured to undergo a color-changing reaction upon contact with the resin, and the image information also includes the color information of the second marking component; Before the step of the control component controlling the opening and closing of the remaining valves based on at least one of the resin flow path information, the flow channel assembly position information, and the connection port position information, the wind turbine blade injection method further includes: The control component optimizes the resin flow path information based on the color information of the second identification component.

14. The wind turbine blade injection method according to claim 9, characterized in that, After the steps of sealing the blade mold with a vacuum membrane and evacuating the interior of the blade mold using the vacuum pump, the wind turbine blade injection method further includes: A third identification component is installed on the side of the vacuum membrane facing away from the wind turbine blade skin and near the connection port, wherein the image information also includes the position information of the third identification component; After the step of opening a portion of the valves to begin resin infusion, the wind turbine blade infusion method further includes: The control unit controls the flow rate of the valve assembly based on the position information of the third identification component.

15. The wind turbine blade injection method according to claim 9, characterized in that, Before the step of the imaging component in the monitoring device capturing images of the wind turbine blade skin and obtaining image information, the wind turbine blade injection method further includes: The fourth identification component is set along the outer contour of the wind turbine blade skin, wherein the image information also includes the position information of the fourth identification component; After the step of capturing images of the wind turbine blade skin and obtaining image information by the imaging component in the monitoring device, the wind turbine blade injection method further includes: The control component establishes a vector model of the wind turbine blade skin based on the position information of the fourth identification component.

16. The wind turbine blade injection method according to claim 9, characterized in that, Prior to the step of opening a portion of the valves to begin resin infusion, the wind turbine blade infusion method further includes: A pressure reducing device is installed on the delivery pipeline; After the step of opening a portion of the valves to begin resin infusion, the wind turbine blade infusion method further includes: The pressure reducing device controls the pressure of the resin in the delivery pipeline to be within a preset pressure range.

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