Wind turbine blade infusion device and infusion seal

Abstract

The application discloses a wind power blade pouring device and a pouring seal. The wind power blade pouring device comprises a mold, a flexible component and a liquid injection pipe. The mold is provided with a placing groove, the placing groove is suitable for placing a to-be-poured part, the flexible component is arranged on the opening of the placing groove and seals the placing groove, the flexible component is provided with a buffer cavity, the outer wall surface of the flexible component is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the buffer cavity, the air inlet is communicated with the placing groove, the liquid injection pipe is provided with a liquid injection port and a liquid outlet, the liquid injection port is arranged on the side of the flexible component away from the placing groove, the liquid outlet penetrates through the flexible component and extends into the placing groove, and is used for injecting fluid towards the to-be-poured part. The technical scheme provided by the application can reduce the number of installed components and operation steps, and significantly improve the pouring efficiency.

Description

Technical Field

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

[0002] As the core component of wind power equipment, the manufacturing process of wind turbine blades directly affects power generation efficiency and equipment lifespan.

[0003] In existing technologies, wind turbine blades are mostly manufactured using a vacuum infusion process, which involves impregnating fiber-reinforced materials with resin to form a composite material structure. In practice, the part to be infused needs to be placed in a mold, and then a vacuum bag film needs to be laid, an injection pipe needs to be installed, and an air extraction system needs to be installed. This makes the infusion process cumbersome and complex. Furthermore, the vacuum bag film and other materials are for single use, resulting in high production costs. Utility Model Content

[0004] The purpose of this application is to provide a wind turbine blade injection device and injection seal, which can reduce the number of installation components and operation steps, and significantly improve injection efficiency.

[0005] In a first aspect, this utility model provides a wind turbine blade injection device, comprising:

[0006] The mold has a placement groove, which is suitable for placing the part to be poured.

[0007] A flexible component is provided on the opening of the placement slot and seals the placement slot. The flexible component has a buffer cavity inside. The outer wall of the flexible component has an air inlet and an air outlet. The air inlet and the air outlet are both connected to the buffer cavity, and the air inlet is connected to the placement slot.

[0008] The injection tube has an injection port and an outlet. The injection port is located on the side of the flexible component away from the placement groove, and the outlet passes through the flexible component and extends into the placement groove for injecting fluid toward the component to be injected.

[0009] Beneficial Effects: This wind turbine blade injection device, when injecting the component, first places the component into the placement groove of the mold, then covers it with a flexible component to seal the placement groove. Next, fluid is injected into the injection pipe through the injection port, and the fluid flows out through the outlet to wet the component. Simultaneously, air is extracted through the exhaust port using external equipment, and the air in the placement groove is expelled through the air inlet and buffer cavity until injection is complete. During the injection process, this device only requires the flexible component to be placed on the placement groove, integrating sealing, air intake, and exhaust functions into the flexible component. Combined with the through-type injection pipe design, there is no need for additional vacuum bags or membranes, significantly reducing the number of installation components and operating steps, and significantly improving injection efficiency.

[0010] Furthermore, during the evacuation process, fluid in the placement tank may flow into the air inlet, causing blockage. However, the flexible component of this device has a buffer cavity that can quickly absorb fluid entering the air inlet, maintaining unobstructed flow between the inlet and outlet, eliminating the need for a disposable air extraction bag at the inlet. After filling, cleaning the residual fluid from the buffer cavity allows the flexible component to be reused, achieving reusability, reducing material waste, and lowering overall production costs.

[0011] In addition, because the flexible component has a certain degree of flexibility, when the flexible component is placed on top of the part to be filled, the flexible component can adapt to the irregular area of ​​the part to be filled, ensuring that the part to be filled is sealed in the placement groove.

[0012] In one alternative embodiment, the plane of the liquid outlet is higher than the bottom surface of the flexible component.

[0013] Beneficial effects: Since the plane where the liquid outlet is located is higher than the bottom surface of the flexible component, the fluid can flow naturally from top to bottom under the action of gravity after flowing out of the injection pipe, quickly covering the surface of the part to be injected, effectively reducing the resistance of horizontal fluid diffusion. It is especially suitable for complex curved surface structures such as large blades, avoiding slow injection due to pressure consumption caused by fluid climbing, and significantly improving injection efficiency.

[0014] In one optional embodiment, the bottom surface of the flexible component is provided with a mounting groove, and the liquid outlet is located in the mounting groove.

[0015] Beneficial effects: By setting an installation groove on the bottom surface of the flexible component, the installation groove raises the liquid outlet above the bottom surface of the flexible component, allowing the fluid to flow out from the injection pipe and naturally flow downward under the action of gravity, covering the surface of the part to be injected and reducing the resistance of the fluid in horizontal diffusion.

[0016] In one alternative embodiment, the liquid outlet is located in the middle region of the placement tank along the width direction of the placement tank.

[0017] Beneficial effects: The outlet is positioned in the middle of the placement tank, allowing the fluid to diffuse symmetrically to both sides along the width of the tank after flowing out of the outlet. Taking wind turbine blades as an example, the blade cross-section is often symmetrical (such as airfoil). The outlet in the middle allows the fluid to flow simultaneously to the upper and lower surfaces of the blade, avoiding the problem of one side being wetted first and the other side lagging behind due to the outlet being off-center. This ensures that the fiber material of the entire cross-section is covered by the fluid synchronously, reducing the risk of local dry spots or uneven curing.

[0018] In one optional implementation, the air inlet is provided with multiple inlets;

[0019] Along the width direction of the placement groove, a plurality of air inlets are correspondingly located on both sides of the placement groove.

[0020] Beneficial effects: Multiple air inlets are arranged on both sides of the placement tank, which allows the negative pressure field inside the tank to be symmetrically distributed along the width direction. Taking a wind turbine blade as an example, air is simultaneously drawn from the upper and lower surfaces of the blade through the air inlets on both sides, avoiding excessive negative pressure on one side that could cause the flexible components to shift to one side, ensuring a consistent vacuum across the entire cross-section, and preventing uneven resin impregnation or air bubbles due to local pressure differences.

[0021] In one optional embodiment, the injection port of the injection tube is provided with an injection connector.

[0022] Beneficial effects: The injection connector at the injection port of the injection pipe allows for quick connection and disconnection from external liquid supply lines. Operators do not need to spend a significant amount of time on installation and disassembly, making it particularly suitable for segmented injection of wind turbine blades or alternating operation of multiple equipment sets, significantly reducing tooling preparation time and effectively improving production efficiency.

[0023] In one optional embodiment, the wind turbine blade injection device further includes a guide net adapted to be laid on the upper surface of the component to be injected, and the liquid outlet is located above the guide net.

[0024] Beneficial effects: When the outlet is directly above the guide net, the fluid flows out of the injection pipe and directly contacts the porous structure of the guide net, rapidly extending outwards through the mesh channels. The three-dimensional porous network of the guide net disperses the concentrated outflowing fluid into a uniform planar flow, avoiding the problems of resin accumulation near the outlet and insufficient wetting at the distal end in traditional injection methods. Taking wind turbine blades as an example, the guide net allows the resin to advance synchronously along the blade's spanwise (length direction), ensuring that the fibers in all areas of the airfoil section are simultaneously wetted, reducing the risk of dry spots and uneven curing.

[0025] In one alternative embodiment, the wind turbine blade injection device further includes a seal located at the connection between the flexible component and the mold.

[0026] Beneficial effects: The sealant forms a physical sealing layer at the connection between the flexible component and the mold, which can effectively prevent outside air from seeping into the vacuum injection system.

[0027] In one optional embodiment, the mold is provided with an air extraction hole, which communicates with the placement groove.

[0028] Beneficial effects: By setting evacuation holes on the mold, and connecting the evacuation holes with the placement groove, the negative pressure generated during the evacuation process can serve as a driving force to assist fluid flow. As the fluid flows into the placement groove, it is propelled towards the evacuation end under the influence of pressure difference, shortening the flow path and accelerating the wetting speed, effectively improving injection efficiency and shortening the production cycle.

[0029] Secondly, this utility model also provides an injection sealing component, comprising: a flexible component having a buffer cavity inside, an air inlet and an air outlet on the outer wall surface of the flexible component, the air inlet and the air outlet being connected to the buffer cavity, and the air inlet and the air outlet being located on the upper and lower sides of the flexible component respectively.

[0030] The injection tube has an injection port and an outlet. The injection port is located above the flexible component, and the outlet passes through the flexible component to inject fluid toward the component to be injected.

[0031] Beneficial Effects: This injection sealing component, used in conjunction with a mold, allows for precise sealing of the injection groove. First, the component is placed into the mold's placement slot, then the flexible component is placed on top, sealing the groove. Next, fluid is injected into the injection pipe through the injection port, flowing out through the outlet and wetting the component. Simultaneously, external equipment is used to evacuate air from the placement groove through the evacuation port, expelling air from the groove via the inlet and buffer cavity until injection is complete. During injection, this device only requires the flexible component to be placed over the placement groove, integrating sealing, air intake, and evacuation functions into the flexible component. Combined with the through-type injection pipe design, it eliminates the need for additional vacuum bags or membranes, significantly reducing the number of components and operating steps, and dramatically improving injection efficiency.

[0032] Furthermore, the flexible component of this device is equipped with a buffer cavity, which can quickly absorb the fluid entering the air inlet, maintaining unobstructed flow between the air inlet and outlet, eliminating the need for a disposable air extraction bag at the air inlet. After filling, the remaining fluid in the buffer cavity is cleaned out, allowing the flexible component to be reused, thus achieving the reuse of the flexible component, reducing material waste, and lowering overall production costs. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a cross-sectional view of a wind turbine blade injection device according to one embodiment provided in this application;

[0035] Figure 2 yes Figure 1 Enlarged schematic diagram of the connection between the flexible component and the injection tube.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100. Mold; 110. Placement slot; 120. Air extraction hole;

[0038] 200. Components to be poured;

[0039] 300. Flexible component; 310. Buffer cavity; 320. Air inlet; 330. Air outlet; 340. Mounting slot;

[0040] 400. Injection tube; 410. Injection port; 420. Outlet; 430. Injection connector;

[0041] 500, Traffic diversion network;

[0042] 600. Sealing components. Detailed Implementation

[0043] In related technologies, wind turbine blade manufacturing often employs a vacuum infusion process, which involves impregnating fiber-reinforced materials with resin to form a composite material structure. In practice, the part to be infused must be placed in a mold, followed by the installation of vacuum bags, the laying of injection pipes, and the installation of an air extraction system. This makes the infusion process cumbersome and complex. Furthermore, the vacuum bags and other materials are for single use, resulting in high production costs.

[0044] During the research and development process of this application, in order to simplify the injection process, the team attempted to integrate the injection pipe and the air extraction system onto the vacuum bag membrane, intending to achieve mold sealing by covering the bag membrane. However, this solution has obvious drawbacks: the vacuum bag membrane is mostly made of polyethylene or nylon, which is a disposable product and must be replaced after injection. Moreover, each replacement requires reassembling the bag membrane with the injection pipe and the air extraction system, resulting in high material costs, cumbersome procedures, and low efficiency.

[0045] Based on this, the inventors of this application have redesigned the wind turbine blade injection device. When injecting the component, it is first placed into the mold's placement groove, and then the flexible component is placed on top to seal the groove. Next, fluid is injected into the injection pipe through the injection port, and the fluid flows out through the outlet to wet the component. Simultaneously, air is extracted through the extraction port using external equipment. The air in the placement groove is sequentially discharged through the air inlet and buffer cavity until injection is complete. During the injection process, this device only requires the flexible component to be placed over the placement groove, integrating sealing, air intake, and extraction functions into the flexible component. Combined with the through-type injection pipe design, it eliminates the need for additional vacuum bags or membranes, significantly reducing the number of installation components and operating steps, and significantly improving injection efficiency.

[0046] Furthermore, during the evacuation process, fluid in the placement tank may flow into the air inlet, causing blockage. However, the flexible component of this device has a buffer cavity that can quickly absorb fluid entering the air inlet, maintaining unobstructed flow between the inlet and outlet, eliminating the need for a disposable air extraction bag at the inlet. After filling, cleaning the residual fluid from the buffer cavity allows the flexible component to be reused, achieving reusability, reducing material waste, and lowering overall production costs.

[0047] 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 some embodiments of this application, but not all embodiments.

[0048] The following is combined with Figures 1 to 2 The following describes embodiments of the present invention.

[0049] According to embodiments of the present invention, on the one hand, such as Figure 1 and Figure 2 As shown, a wind turbine blade injection device is provided, including a mold 100, a flexible component 300 and an injection pipe 400.

[0050] Specifically, such as Figure 1 As shown, the mold 100 has a placement groove 110, which is suitable for placing the part to be poured 200.

[0051] Specifically, such as Figure 1 As shown, the flexible component 300 covers the opening of the placement groove 110 and seals the placement groove 110. The flexible component 300 has a buffer cavity 310 inside, and its outer wall has an air inlet 320 and an air outlet 330. The air inlet 320 and the air outlet 330 are respectively connected to the buffer cavity 310, and the air inlet 320 is connected to the placement groove 110.

[0052] Specifically, such as Figure 1 As shown, the injection tube 400 is provided with an injection port 410 and an outlet 420. The injection port 410 is located on the side of the flexible component 300 away from the placement groove 110. The outlet 420 of the injection tube 400 passes through the flexible component 300 and extends into the placement groove 110, so that the outlet 420 of the injection tube 400 can inject fluid toward the component to be injected 200.

[0053] This wind turbine blade injection device, when injecting the component 200, first places the component 200 into the placement groove 110 of the mold 100, and then covers it with the flexible component 300 to seal the placement groove 110. Next, fluid is injected into the injection pipe 400 through the injection port 410, and the fluid flows out through the outlet 420 to wet the component 200. At the same time, air is extracted through the air extraction port 330 using external equipment, and the air in the placement groove 110 is discharged from the air extraction port 330 through the air inlet 320 and the buffer cavity until the injection is complete. During the injection process, this device only requires the flexible component 300 to be placed on the placement groove 110, integrating the functions of sealing, air intake, and air extraction into the flexible component 300. With the through-type injection pipe 400 design, there is no need to set up additional vacuum bags or other equipment, which greatly reduces the number of installation components and operation steps, and significantly improves the injection efficiency.

[0054] Furthermore, during the evacuation process, fluid in the placement tank 110 may flow into the air inlet 320, causing blockage. The flexible component 300 of this device is equipped with a buffer cavity 310, which can quickly absorb the fluid entering the air inlet 320, allowing the fluid in the air inlet 320 to enter the buffer cavity 310, maintaining the unobstructed flow between the air inlet 320 and the evacuation port 330, eliminating the need for a disposable evacuation bag for the air inlet 320. After filling, the residual fluid in the buffer cavity 310 is cleaned, allowing the flexible component 300 to be reused, achieving reusability of the flexible component 300, reducing material waste, and lowering overall production costs.

[0055] In addition, since the flexible component 300 has a certain degree of flexibility, when the flexible component 300 is placed on top of the part to be filled 200, the flexible component 300 can adapt to the irregular area of ​​the part to be filled 200, ensuring that the part to be filled 200 is sealed in the placement groove 110.

[0056] Specifically, air inlets 320 and air outlets 330 are provided at different height positions on the flexible component 300, with the air inlet 320 near the bottom and the air outlet 330 near the top. During air extraction, air flows upward from the bottom, which can effectively carry out residual gas in the mold 100 and reduce the risk of fluid backflow into the air outlet.

[0057] Specifically, the air inlet 320 and the air outlet 330 can be any shape, such as a square hole or a circular hole, and one or more air inlets 320 and air outlets 330 can be provided. In this embodiment of the application, there are no specific limitations on the shape and number of air inlets 320 and air outlets 330.

[0058] Specifically, the fluid can be epoxy resin, unsaturated polyester resin, etc. In this embodiment, the type of fluid is not specifically limited.

[0059] Specifically, one or more injection tubes 400 can be provided. The injection tubes 400 can be located near the middle area of ​​the placement tank 110 or near the edge area of ​​the placement tank 110. In this embodiment, there are no specific restrictions on the number and location of the injection tubes 400.

[0060] Specifically, the flexible component 300 can be made of silicone. In order to facilitate the observation of fluid flow, the flexible component 300 can be made of transparent or semi-transparent material.

[0061] In one embodiment, such as Figure 1 and Figure 2 As shown, the plane where the liquid outlet 420 is located is higher than the bottom surface of the flexible component 300.

[0062] Since the plane of the outlet 420 is higher than the bottom surface of the flexible component 300, the fluid can flow naturally from top to bottom under the action of gravity after flowing out of the injection pipe 400, quickly covering the surface of the component to be injected 200. This effectively reduces the resistance of horizontal fluid diffusion, and is especially suitable for complex curved surface structures such as large blades. It avoids slow injection due to pressure consumption caused by fluid climbing, and significantly improves injection efficiency.

[0063] In addition, the wind turbine blade waiting to be filled component 200 often has a complex irregular curved surface. The high-position liquid outlet 420 allows the fluid to start wetting from the "high point" of the component. Under the action of gravity and surface tension, it fills the concave area more evenly, avoiding the situation of fluid accumulation at the low end and insufficient wetting at the high end. Combined with the adaptive sealing characteristics of the flexible component 300, it effectively improves the filling quality and sealing effect of complex structures.

[0064] In one embodiment, such as Figure 2 As shown, the bottom surface of the flexible component 300 is provided with an installation groove 340, and the liquid outlet 420 is located in the installation groove 340.

[0065] By setting an installation groove 340 on the bottom surface of the flexible component 300, the installation groove 340 raises the liquid outlet 420 above the bottom surface of the flexible component 300, so that after the fluid flows out from the injection pipe 400, it can flow naturally downward under the action of gravity, covering the surface of the component to be injected 200, reducing the resistance of the fluid in horizontal diffusion.

[0066] Specifically, the mounting groove 340 can be set as a square groove, a circular groove, or a shape that matches the liquid outlet 420. In this embodiment, the shape of the mounting groove 340 is not specifically limited.

[0067] In one embodiment, such as Figure 1 As shown, along the width direction of the placement tank 110, the liquid outlet 420 is correspondingly located in the middle area of ​​the placement tank 110.

[0068] The outlet 420 is positioned in the middle area of ​​the placement tank 110, allowing the fluid to flow out from the outlet 420 and diffuse symmetrically to both sides along the width of the placement tank 110. Taking wind turbine blades as an example, the blade cross-section is often symmetrical (such as an airfoil). The outlet in the middle allows the fluid to flow simultaneously to the upper and lower surfaces of the blade, avoiding the problem of one side being wetted first and the other side lagging behind due to the offset of the outlet 420. This ensures that the fiber material of the entire cross-section is covered by the fluid synchronously, reducing the risk of local dry spots or uneven curing.

[0069] Specifically, if the outlet is offset at 420°, the fluid flow rate may slow down as it flows towards the distal edge due to pressure attenuation, while the fluid may accumulate near the proximal edge due to premature arrival. A centrally located layout ensures that the fluid reaches both edges at equal distances, resulting in consistent flow resistance. This prevents overflow at the edges due to excessive fluid accumulation and reduces localized curing and heat generation issues caused by fluid stagnation in the central area, thus improving the controllability of the pouring process.

[0070] In one embodiment, such as Figure 1 As shown, multiple air inlets 320 are provided, and along the width direction of the placement groove 110, multiple air inlets 320 are correspondingly arranged in the two side areas of the placement groove 110.

[0071] Multiple air inlets 320 are arranged on both sides of the placement tank 110, which allows the negative pressure field within the placement tank 110 to be symmetrically distributed along the width direction. Taking a wind turbine blade as an example, air is simultaneously drawn from the upper and lower surfaces of the blade through the air inlets 320 on both sides, avoiding excessive negative pressure on one side that could cause the flexible component 300 to shift to one side, ensuring a consistent vacuum across the entire cross-section, and preventing uneven resin impregnation or the formation of air bubbles due to local pressure differences.

[0072] The two air inlets 320 can simultaneously draw air from the edge of the placement slot 110 to the middle area. The air is discharged along the shortest path, reducing residual air in the middle area. This is especially suitable for wide placement slots 110 (such as large blade cross sections), shortening the vacuuming time and improving the injection efficiency.

[0073] During vacuum filling, after the fluid flows out from the middle outlet 420, the negative pressure formed by the two air inlets 320 can simultaneously pull the fluid to both sides, causing the fluid to flow towards the edge along the pattern of adsorption by the negative pressure on both sides from the middle outlet, ensuring that the fluid diffuses symmetrically in the width direction.

[0074] Specifically, the air inlets 320 on both sides can be independently adjusted by valves to regulate the air flow rate. Operators can balance the air pumping intensity on both sides in real time based on the vacuum monitoring data of each area in the placement tank 110 (such as pressure gauge feedback) to avoid the flexible component 300 being sucked down or damaged due to excessive air pumping on one side.

[0075] In one embodiment, such as Figure 1As shown, an injection connector 430 is provided at the injection port 410 of the injection tube 400.

[0076] A liquid injection connector 430 is installed at the liquid injection port 410 of the liquid injection pipe 400, which enables quick connection and disconnection with the external liquid supply pipeline. Operators do not need to spend a lot of time on installation and disassembly, which is especially suitable for wind turbine blade segmented injection or multiple sets of equipment alternating operation scenarios, greatly shortening tooling preparation time and effectively improving production efficiency.

[0077] Specifically, the injection connector 430 is equipped with a sealing structure, such as an O-ring or a conical seal, which can effectively prevent fluid leakage and the infiltration of outside air during the vacuum injection process. It can maintain a stable vacuum level in the system, avoid insufficient fluid wetting or the generation of bubbles due to seal failure, and ensure the injection quality of composite material components such as wind turbine blades.

[0078] In one embodiment, such as Figure 1 As shown, the wind turbine blade injection device also includes a guide net 500, which is suitable for being laid on the upper surface of the component to be injected 200, and the liquid outlet 420 is located above the guide net 500.

[0079] When the outlet 420 is directly above the guide net 500, the fluid flows out of the injection pipe 400 and directly contacts the porous structure of the guide net 500, rapidly extending outwards through the mesh channels. The three-dimensional porous network of the guide net 500 disperses the concentrated outflowing fluid into a uniform planar flow, avoiding the problems of resin accumulation near the outlet 420 and insufficient wetting at the distal end in traditional infusion. Taking a wind turbine blade as an example, the guide net 500 allows the resin to advance synchronously along the blade spanwise (length direction), ensuring that the fibers in all areas of the airfoil section are simultaneously wetted, reducing the risk of dry spots and uneven curing.

[0080] The porous structure of the flow guide net 500 provides a low-resistance channel for the fluid. When the fluid flows in the flow guide net 500, the friction with the fiber surface can be reduced by the help of the mesh skeleton, which significantly improves production efficiency.

[0081] Specifically, the guide net 500 can be made of glass fiber or polypropylene, which can closely fit the airfoil surface, variable cross-section area and other irregular structures of the blade. When the outlet 420 is laid in conjunction with the guide net 500, the fluid can adaptively cover the complex contour with the deformation of the guide net 500, avoiding impact displacement (such as fiber wrinkles) caused by the outlet 420 directly aligning with the fiber layer.

[0082] In one embodiment, such as Figure 1 As shown, the wind turbine blade injection device also includes a seal 600, which is installed at the connection between the flexible component 300 and the mold 100.

[0083] The seal 600 forms a physical sealing layer at the connection between the flexible component 300 and the mold 100, which can effectively prevent outside air from seeping into the vacuum injection system.

[0084] During the injection process, fluid can easily overflow from the gap between the flexible component 300 and the mold 100 under pressure. The sealing component 600 forms a closed-loop barrier at the connection through compression sealing or heat fusion bonding to prevent fluid leakage to the outside of the mold 100, reducing cleaning time and avoiding resin contamination of equipment or working environment, thus reducing material loss rate.

[0085] Specifically, the seal 600 can be a silicone rubber sealing strip, rubber strip, etc. In this embodiment, the type of seal 600 is not specifically limited.

[0086] In one embodiment, the mold 100 is provided with an air extraction hole 120, which is connected to the placement groove 110.

[0087] By providing an air extraction hole 120 on the mold 100, and connecting the air extraction hole 120 to the placement groove 110, the negative pressure generated during the air extraction process can serve as a driving force to assist fluid flow. As the fluid flows into the placement groove 110, it will be propelled towards the air extraction end under the action of pressure difference, shortening the flow path and accelerating the wetting speed, effectively improving the injection efficiency and shortening the production cycle.

[0088] The evacuation port 120 of the mold 100 is directly connected to the placement tank 110, which can form a through evacuation channel in the pouring area, ensuring that the air in the entire placement tank 110 is quickly discharged and maintaining a stable vacuum environment.

[0089] According to an embodiment of the present invention, on the other hand, as... Figure 1 and Figure 2 As shown, an injection seal is also provided, including a flexible component 300 and an injection tube 400.

[0090] Specifically, such as Figure 1 As shown, the flexible component 300 has a buffer cavity 310 inside, and the outer wall of the flexible component 300 has an air inlet 320 and an air outlet 330. The air inlet 320 and the air outlet 330 are both connected to the buffer cavity 310, and the air inlet 320 and the air outlet 330 are respectively located on the upper and lower sides of the flexible component 300.

[0091] Specifically, such as Figure 1 As shown, the injection tube 400 has an injection port 410 and an outlet 420. The injection port 410 is located above the flexible member 300, and the outlet 420 passes through the flexible member 300 and is used to inject fluid toward the part to be injected 200.

[0092] This injection sealing component, when used with the mold 100 to inject the component 200, first places the component 200 into the placement groove 110 of the mold 100, and then covers it with the flexible component 300 to seal the placement groove 110. Next, fluid is injected into the injection pipe 400 through the injection port 410, and the fluid flows out through the outlet 420 to wet the component 200. At the same time, air is extracted through the air extraction port 330 using external equipment, and the air in the placement groove 110 is discharged from the air extraction port 330 through the air inlet 320 and the buffer cavity until the injection is complete. During the injection process, this device only requires the flexible component 300 to be placed on the placement groove 110, integrating the functions of sealing, air intake, and air extraction into the flexible component 300. With the through-type injection pipe 400 design, there is no need to set up additional vacuum bags or other equipment, which greatly reduces the number of installation components and operation steps, and significantly improves the injection efficiency.

[0093] Furthermore, the flexible component 300 of this device is equipped with a buffer cavity 310, which can quickly absorb the fluid entering the air inlet 320, maintaining the unobstructed flow between the air inlet 320 and the exhaust port 330, eliminating the need for a disposable exhaust bag for the air inlet 320. After filling, the residual fluid in the buffer cavity 310 is cleaned, allowing the flexible component 300 to be reused, thus achieving the reuse of the flexible component 300, reducing material waste, and lowering the overall production cost.

[0094] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0095] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0096] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0097] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended 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. Such 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.

Claims

1. A wind turbine blade injection device, characterized in that, include: The mold (100) has a placement groove (110) which is suitable for placing the part to be poured (200); A flexible component (300) is provided on the opening of the placement groove (110) and seals the placement groove (110). The flexible component (300) is provided with a buffer cavity (310). The outer wall surface of the flexible component (300) is provided with an air inlet (320) and an air outlet (330). The air inlet (320) and the air outlet (330) are both connected to the buffer cavity (310), and the air inlet (320) is connected to the placement groove (110). The injection tube (400) has an injection port (410) and an outlet (420). The injection port (410) is located on the side of the flexible component (300) away from the placement groove (110). The outlet (420) passes through the flexible component (300) and extends into the placement groove (110) for injecting fluid toward the component to be injected (200).

2. The wind turbine blade injection device according to claim 1, characterized in that, The plane where the liquid outlet (420) is located is higher than the bottom surface of the flexible component (300).

3. The wind turbine blade injection device according to claim 2, characterized in that, The bottom surface of the flexible component (300) is provided with an installation groove (340), and the liquid outlet (420) is located in the installation groove (340).

4. The wind turbine blade injection device according to claim 3, characterized in that, Along the width direction of the placement groove (110), the liquid outlet (420) is correspondingly located in the middle area of ​​the placement groove (110).

5. The wind turbine blade injection device according to claim 4, characterized in that, The air inlet (320) is provided with multiple inlets; Along the width direction of the placement groove (110), a plurality of air inlets (320) are correspondingly provided on both sides of the placement groove (110).

6. The wind turbine blade injection device according to claim 2, characterized in that, The injection port (410) of the injection tube (400) is provided with an injection connector (430).

7. The wind turbine blade injection device according to any one of claims 1 to 6, characterized in that, The wind turbine blade injection device also includes a guide net (500), which is adapted to be laid on the upper surface of the part to be injected (200), and the liquid outlet (420) is located above the guide net (500).

8. The wind turbine blade injection device according to any one of claims 1 to 6, characterized in that, The wind turbine blade injection device also includes a sealing element (600), which is located at the connection between the flexible component (300) and the mold (100).

9. The wind turbine blade injection device according to any one of claims 1 to 6, characterized in that, The mold (100) is provided with an air extraction hole (120), which is connected to the placement groove (110).

10. A potting seal, characterized in that, include: A flexible component (300) has a buffer cavity (310) inside. The outer wall of the flexible component (300) is provided with an air inlet (320) and an air outlet (330). The air inlet (320) and the air outlet (330) are both connected to the buffer cavity (310), and the air inlet (320) and the air outlet (330) are respectively located on the upper and lower sides of the flexible component (300). The injection tube (400) has an injection port (410) and an outlet (420). The injection port (410) is located above the flexible component (300), and the outlet (420) passes through the flexible component (300) for injecting fluid toward the component to be injected (200).

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