Wind turbine blade infusion device and apparatus

Abstract

This application discloses a wind turbine blade injection device and equipment. The wind turbine blade injection device includes a mold, a lifting mechanism, an injection assembly, a sensor, and a controller. The lifting mechanism includes a drive component and a lifting platform. The drive component moves the lifting platform along the height direction of the mold. The injection assembly includes a buffer bag, a first guide pipe, and a second guide pipe. The buffer bag is placed on the lifting platform and is connected to the injection glue machine through the first guide pipe and to the guide channel through the second guide pipe. The sensor detects the liquid level injection height within the mold. The controller is electrically connected to both the lifting mechanism and the sensor. Based on the liquid level injection height information detected by the sensor, the controller controls the drive component to adjust the height of the lifting platform so that the height of the buffer bag matches the liquid level injection height. The technical solution provided by this application can ensure uniform resin injection, reduce problems such as uneven resin flow and residual air bubbles, and improve the quality of blade molding.

Description

Technical Field

[0001] This application relates to the field of wind turbine blade technology, and in particular to a wind turbine blade injection device and equipment. 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 vacuum injection processes. When large blades are vacuum injected, it is difficult to balance the injection pressure. Especially as the blade size increases, the pressure fluctuation caused by the difference in resin injection height becomes more significant, which can easily lead to defects such as uneven resin flow, residual air bubbles, and insufficient fiber impregnation, thereby affecting the structural strength and service life of the blade. Utility Model Content

[0004] The purpose of this application is to provide a wind turbine blade injection device and equipment that can ensure uniform resin injection, reduce problems such as uneven resin flow and air bubble residue, and improve the quality of blade molding.

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

[0006] The mold is provided with multiple flow channels, which are spaced apart along the height direction of the mold.

[0007] The lifting mechanism includes a drive component and a lifting platform, wherein the drive component is used to drive the lifting platform to move along the height direction of the mold;

[0008] The filling assembly includes a buffer bag, a first guide tube, and a second guide tube. The buffer bag is disposed on the lifting platform. The buffer bag is connected to the filling machine through the first guide tube, and the buffer bag is connected to the guide channel through the second guide tube.

[0009] Sensors are used to detect the liquid level filling height inside the mold;

[0010] The controller is electrically connected to the lifting mechanism and the sensor respectively. Based on the liquid level filling height information detected by the sensor, the controller controls the drive component to adjust the height of the lifting platform so that the height of the buffer bag is adapted to the liquid level filling height.

[0011] Beneficial effects: In this wind turbine blade injection device, when injecting resin into wind turbine blades, a buffer bag is first installed on the lifting platform of the lifting mechanism. Then, the injection machine and the buffer bag are connected through the first guide pipe. The injection machine can transport resin to the buffer bag through the first guide pipe, and the buffer bag provides temporary storage space for the resin. Subsequently, the second guide pipe is connected to both the buffer bag and the guide channel. Under the vacuum environment of the mold, the resin flows into the guide channel through the second guide pipe for injection.

[0012] During the injection process, the liquid level inside the mold is detected in real time by sensors. The controller drives the lifting mechanism to adjust the height of the lifting platform based on the liquid level, thereby changing the relative height between the buffer bag and the liquid surface. This ensures that the buffer bag and the liquid level are matched, effectively controlling the injection pressure and dynamically adapting to the pressure requirements during the injection process. This avoids pressure fluctuations caused by height differences, ensures uniform resin injection, reduces problems such as uneven resin flow and air bubble residue, and improves the quality of blade molding.

[0013] In addition, since the controller is electrically connected to the sensor and the lifting mechanism, the lifting platform is automatically controlled to rise and fall based on the liquid level filling height information fed back by the sensor. The height of the buffer bag can be accurately adjusted without manual intervention, which can improve filling efficiency and control accuracy, and is especially suitable for the production of ultra-large wind turbine blades.

[0014] In one optional implementation, the controller controls the difference H between the height of the buffer bag and the liquid level filling height based on the liquid level filling height information detected by the sensor, such that 0mm≤H≤500mm.

[0015] Beneficial effects: The controller controls the height difference H between the buffer bag and the liquid surface within the range of 0-500mm. By dynamically adjusting the static pressure, it can ensure that the resin can overcome the flow resistance and complete the filling smoothly, while avoiding the impact of excessive pressure on the fiber structure, effectively reducing problems such as residual air bubbles and uneven wetting.

[0016] Furthermore, the 0-500mm height difference range is compatible with resin materials of different viscosities, effectively handling both the larger driving pressure required for high-viscosity resins and the anti-turbulence control for low-viscosity resins.

[0017] In one optional embodiment, the second guide tube includes multiple branch tubes, each branch tube being configured in a one-to-one correspondence with a guide channel, with one end of each branch tube connected to the corresponding guide channel and the other end connected to the buffer bag.

[0018] Each of the branch pipes is equipped with a switch valve, which is electrically connected to the controller. When the liquid level detected by the sensor reaches the corresponding position of the guide channel, the controller opens the switch valve of the corresponding branch pipe.

[0019] Beneficial effects: The multiple branches of the second guide tube correspond one-to-one with the guide channel, and each branch tube is equipped with a switch valve. The controller dynamically opens the corresponding branch tube according to the liquid level injection height detected by the sensor, which allows the resin to be injected into different areas of the mold as needed, avoiding the problem of uneven flow when injecting with a traditional single tube. It allows the resin to be pushed smoothly along the height direction of the mold, effectively reducing local bubble accumulation and glue shortage, and improving the overall uniformity of blade injection.

[0020] The sensor provides real-time feedback on the liquid level filling height, and the controller automatically controls the timing of the branch pipe opening and closing, precisely executing the filling logic without manual intervention. This effectively avoids human judgment errors and ensures the stability and reliability of the filling process.

[0021] In one alternative embodiment, each of the branch pipes is provided with an injection connector at its end, and the injection connector is detachably connected to the flow channel.

[0022] Beneficial effects: Since the liquid injection connector and the flow channel at the end of the branch pipe are detachably connected, when changing different types of blade molds, no complicated operations or tools are required to quickly disassemble and adapt to the new mold, which can efficiently meet the production needs of multiple specifications of blades.

[0023] The branch pipe and the flow channel are connected by a liquid injection connector. The liquid injection connector can ensure the sealing of the connection between the branch pipe and the flow channel. Even with frequent disassembly, it can still maintain good sealing in the vacuum filling environment, avoid resin leakage or air ingress, ensure stable filling pressure, and reduce filling defects caused by sealing problems.

[0024] In one alternative embodiment, the sensor is configured as a pressure sensor, with each pressure sensor corresponding to one of the flow channels, and the pressure sensor is used to detect the pressure at the flow channel.

[0025] Beneficial effects: Because the pressure sensor is installed in the flow channel, the liquid level filling height is determined by detecting pressure changes within the flow channel (the air pressure differs between the resin-filled and unfilled areas). Furthermore, each flow channel corresponds to one pressure sensor, enabling segmented pressure monitoring along the mold height.

[0026] In one alternative embodiment, the lifting mechanism is located at the injection port end of the mold near the flow channel, along the length of the mold.

[0027] Beneficial effects: Positioning the lifting mechanism near the injection port of the flow channel allows for direct adjustment of the height difference when the resin enters the mold, precisely controlling the initial injection pressure. Changes in the height of the buffer bag act quickly at the injection port, preventing slow resin flow due to insufficient pressure or resin impact due to excessive pressure, ensuring stable resin filling within the mold. Furthermore, the proximity of the lifting mechanism to the injection port of the flow channel reduces the length of the branch pipe.

[0028] In one optional embodiment, the lifting mechanism further includes a base with multiple wheels, and the lifting platform is mounted on the base in a liftable manner.

[0029] Beneficial effects: The lifting mechanism base is equipped with casters, allowing for free movement of the lifting mechanism and quick switching to different mold stations without disassembly. In multi-mold parallel production scenarios, it can flexibly adapt to the injection requirements of different blade specifications, avoiding duplicate equipment purchases and significantly improving equipment utilization.

[0030] In one optional embodiment, the lifting mechanism further includes a guide assembly disposed on the base, and the lifting platform is vertically movable along the guide assembly.

[0031] Beneficial effects: The guide assembly, mounted on the base, provides precise guidance for the lifting platform's movement, preventing swaying or deviation during lifting. When adjusting the height of the buffer bag, the lifting platform moves stably along the guide assembly, ensuring precise control of the height difference between the buffer bag and the liquid surface, maintaining stable filling pressure, and reducing uneven resin flow caused by unstable lifting.

[0032] In one alternative embodiment, the cushioning bag is fixed to the lifting platform.

[0033] Beneficial effects: Because the buffer bag is fixedly connected to the lifting platform, it rises and falls synchronously with the platform when the platform is adjusted, preventing deviations in the height difference between the buffer bag and the liquid surface due to loosening or displacement. During the filling process, it ensures that the height difference between the buffer bag and the liquid surface remains within the process requirements, thereby stabilizing the filling pressure and ensuring uniform resin filling.

[0034] Secondly, this utility model also provides a wind turbine blade injection device, comprising:

[0035] A lifting mechanism includes a drive component and a lifting platform, wherein the drive component is used to drive the lifting platform to move along the height direction;

[0036] The injection assembly includes a buffer bag, a first guide tube, and a second guide tube. The buffer bag is disposed on the lifting platform. The buffer bag is connected to the injection machine through the first guide tube, and the buffer bag is connected to the mold's guide channel through the second guide tube.

[0037] Sensors are used to detect the liquid level filling height inside the mold;

[0038] The controller is electrically connected to the lifting mechanism and the sensor respectively. Based on the liquid level filling height information detected by the sensor, the controller controls the drive component to adjust the height of the lifting platform so that the height of the buffer bag is adapted to the liquid level filling height.

[0039] Beneficial Effects: This wind turbine blade injection equipment requires the use of a mold during the injection of resin into wind turbine blades. First, a buffer bag is installed on the lifting platform of the lifting mechanism. Then, the injection machine and the buffer bag are connected through a first guide pipe. The injection machine delivers resin to the buffer bag through the first guide pipe, and the buffer bag provides temporary storage space for the resin. Subsequently, a second guide pipe is connected to both the buffer bag and the guide channel. Under the vacuum environment of the mold, the resin flows into the guide channel through the second guide pipe for injection.

[0040] During the injection process, the liquid level inside the mold is detected in real time by sensors. The controller drives the lifting mechanism to adjust the height of the lifting platform based on the liquid level, thereby changing the relative height between the buffer bag and the liquid surface. This ensures that the buffer bag and the liquid level are matched, effectively controlling the injection pressure and dynamically adapting to the pressure requirements during the injection process. This avoids pressure fluctuations caused by height differences, ensures uniform resin injection, reduces problems such as uneven resin flow and air bubble residue, and improves the quality of blade molding. Attached Figure Description

[0041] 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.

[0042] Figure 1 This is a schematic diagram of the structure of a wind turbine blade injection device according to one embodiment provided in this application;

[0043] Figure 2 This is a schematic diagram of the structure of the wind turbine blade injection device in another embodiment provided in this application;

[0044] Figure 3 yes Figure 2 A partially enlarged schematic diagram of the central branch pipe.

[0045] Explanation of reference numerals in the attached figures:

[0046] 100. Mold; 110. Flow channel;

[0047] 200. Lifting mechanism; 210. Lifting platform; 220. Base; 221. Traveling wheels; 230. Guide assembly;

[0048] 300. Injection assembly; 310. Buffer bag; 320. First guide tube; 330. Second guide tube; 331. Branch pipe; 332. Switch valve; 333. Injection connector; 340. Injection machine. Detailed Implementation

[0049] In related technologies, wind turbine blades are mostly manufactured using vacuum injection processes. When large blades are vacuum injected, it is difficult to balance the injection pressure. Especially as the blade size increases, the pressure fluctuation caused by the difference in resin injection height becomes more significant, which can easily lead to defects such as uneven resin flow, residual air bubbles, and insufficient fiber wetting, thereby affecting the structural strength and service life of the blade.

[0050] In the research and development of resin injection technology for large wind turbine blades, the pressure fluctuation caused by height difference has become a key bottleneck restricting the injection quality. Since the vertical distance between the top and bottom of the mold of a 100-meter blade can be tens of meters, the static pressure fluctuation caused by the height change of the resin during the injection process leads to defects such as uneven resin flow and residual air bubbles.

[0051] In the early stages of research and development, the team attempted to place the buffer bag in the middle region between the top and bottom of the blade, hoping to balance the pressure by compromising the height. This approach alleviated the pressure fluctuation problem to some extent in the infusion of small and medium-sized blades, reducing the range of infusion pressure fluctuations. However, when applied to large blades, the static pressure fluctuations remained significant due to the still large height difference, resulting in a noticeable difference in compaction between the blade root and the top.

[0052] To overcome this technical barrier, the R&D team proposed a segmented adjustment strategy: multiple height-adjustable platforms are set at intervals between the top and bottom of the blade. Operators manually move the buffer bag to the corresponding platform height based on the liquid level in the mold. This solution successfully controls pressure fluctuations within permissible limits by dynamically adjusting the height of the buffer bag, thus solving the filling problem for large blades. While this solution addresses the pressure impact caused by height differences, it requires operators to continuously move the buffer bag, resulting in a high workload for them.

[0053] Based on this, the inventors of this application have redesigned the injection device. When injecting resin into wind turbine blades, a buffer bag is first installed on the lifting platform of the lifting mechanism. Then, a first guide pipe connects the injection machine and the buffer bag. The injection machine can deliver resin to the buffer bag through the first guide pipe, and the buffer bag provides temporary storage space for the resin. Subsequently, a second guide pipe is connected to both the buffer bag and the guide channel. Under the vacuum environment of the mold, the resin flows into the guide channel through the second guide pipe for injection.

[0054] During the injection process, sensors detect the injection height of the liquid level in the mold in real time. The controller drives the lifting mechanism to adjust the height of the lifting platform based on the injection height, thereby changing the relative height between the buffer bag and the injection height of the liquid level. This ensures that the injection pressure is matched with the injection height, effectively controls the injection pressure, dynamically adapts to the pressure requirements during the injection process, avoids pressure fluctuations caused by height differences, ensures uniform resin injection, reduces problems such as uneven resin flow and air bubble residue, and improves the quality of blade molding.

[0055] In addition, since the controller is electrically connected to the sensor and the lifting mechanism, the lifting platform is automatically controlled to rise and fall based on the liquid level filling height information fed back by the sensor. The height of the buffer bag can be accurately adjusted without manual intervention, which can improve filling efficiency and control accuracy, and is especially suitable for the production of ultra-large wind turbine blades.

[0056] 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.

[0057] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0058] According to embodiments of the present invention, on the one hand, such as Figures 1 to 3 As shown, a wind turbine blade injection device is provided, including a mold 100, a lifting mechanism 200, an injection assembly 300, a sensor (not shown in the figure), and a controller (not shown in the figure).

[0059] Specifically, such as Figure 1 As shown, the mold 100 is provided with a plurality of flow channels 110, wherein the plurality of flow channels 110 are spaced apart along the height direction of the mold 100, and each flow channel 110 extends along the length direction of the mold 100.

[0060] Specifically, such as Figure 1 As shown, the lifting mechanism 200 includes a drive member (not shown in the figure) and a lifting platform 210. The drive member is connected to the lifting platform 210 and is used to drive the lifting platform 210 to move along the height direction of the mold 100.

[0061] Specifically, such as Figure 1 As shown, the filling assembly 300 includes a buffer bag 310, a first guide tube 320, and a second guide tube 330. The buffer bag 310 is installed on the lifting platform 210. The buffer bag 310 is connected to the filling machine 340 through the first guide tube 320, and the buffer bag 310 is connected to the guide channel 110 through the second guide tube 330.

[0062] Specifically, the sensor is used to detect the liquid level filling height inside the mold 100.

[0063] Specifically, the controller is electrically connected to the lifting mechanism 200 and the sensor respectively. The controller is configured to receive the liquid level filling height information detected by the sensor, and based on the liquid level filling height information, control the drive to adjust the height of the lifting platform 210 so that the height of the buffer bag 310 is adapted to the liquid level filling height.

[0064] In this wind turbine blade injection device, when injecting resin into the wind turbine blade, a buffer bag 310 is first installed on the lifting platform 210 of the lifting mechanism 200. Then, the injection machine 340 and the buffer bag 310 are connected through the first guide pipe 320. The injection machine 340 can transport resin to the buffer bag 310 through the first guide pipe 320, and the buffer bag 310 provides temporary storage space for the resin. Subsequently, the second guide pipe 330 is connected to both the buffer bag 310 and the guide channel 110. Under the vacuum environment of the mold 100, the resin flows into the guide channel 110 through the second guide pipe 330 for injection.

[0065] During the injection process, the liquid level inside the mold 100 is detected in real time by a sensor. The controller drives the lifting mechanism 200 to adjust the height of the lifting platform 210 according to the liquid level injection height, thereby changing the relative height between the buffer bag 310 and the liquid level injection height. This makes the buffer bag 310 match the liquid level injection height, effectively controlling the injection pressure, dynamically adapting to the pressure requirements during the injection process, avoiding pressure fluctuations caused by height differences, ensuring uniform resin injection, reducing problems such as uneven resin flow and air bubble residue, and improving the quality of blade molding.

[0066] In addition, since the controller is electrically connected to the sensor and the lifting mechanism 200, the lifting platform 210 is automatically raised and lowered based on the liquid level filling height information fed back by the sensor. The height of the buffer bag 310 can be accurately adjusted without manual intervention, which can improve filling efficiency and control accuracy, and is especially suitable for the production of ultra-large wind turbine blades.

[0067] Specifically, the driving component can be a servo motor, an electric actuator, a hydraulic cylinder, or a pneumatic cylinder, etc. In this embodiment, the type of driving component is not specifically limited.

[0068] For example, the driving component is a servo motor. The servo motor drives the ball screw to rotate through the coupling, which converts the rotational motion into the linear motion of the lifting platform 210, so that the lifting platform 210 can move along the height direction of the mold 100.

[0069] Specifically, the buffer bag 310 serves as an intermediate station for resin delivery from the dispensing machine 340 to the mold 100, temporarily storing the resin and stabilizing the delivery pressure to prevent uneven resin flow caused by pressure fluctuations when the dispensing machine 340 directly supplies the resin.

[0070] Specifically, the sensor can be an ultrasonic level sensor, a capacitive level sensor, a pressure sensor, etc. In this embodiment, no specific limitation is made on the type of sensor.

[0071] Specifically, the controller can be an existing controller such as a PLC (Programmable Logic Controller), a microcontroller, or a computer control system. In this embodiment, no specific restrictions are placed on the type of controller.

[0072] In one embodiment, the controller controls the difference H between the height of the buffer bag 310 and the liquid level filling height based on the liquid level filling height information detected by the sensor, satisfying 0mm≤H≤500mm.

[0073] The controller keeps the height difference H between the buffer bag 310 and the liquid level within the range of 0-500mm. By dynamically adjusting the static pressure, it can ensure that the resin can overcome the flow resistance and complete the filling smoothly, while avoiding the impact of excessive pressure on the fiber structure, effectively reducing problems such as residual air bubbles and uneven wetting.

[0074] Furthermore, the 0-500mm height difference range is compatible with resin materials of different viscosities, effectively handling both the larger driving pressure required for high-viscosity resins and the anti-turbulence control for low-viscosity resins.

[0075] In one embodiment, such as Figure 2 and Figure 3 As shown, the second guide pipe 330 includes multiple branch pipes 331, each branch pipe 331 corresponding to a guide channel 110. One end of each branch pipe 331 is connected to the corresponding guide channel 110, and the other end is connected to the buffer bag 310. Each branch pipe 331 is equipped with a switch valve 332, which is electrically connected to the controller. When the liquid level detected by the sensor reaches the position of the corresponding guide channel 110, the controller opens the switch valve 332 of the corresponding branch pipe 331 and closes the switch valves 332 of the other branch pipes 331.

[0076] The multiple branches 331 of the second guide pipe 330 correspond one-to-one with the guide channel 110, and each branch pipe 331 is equipped with a switch valve 332. The controller dynamically opens the corresponding branch pipe 331 according to the liquid level injection height detected by the sensor, which allows the resin to be injected into different areas of the mold 100 as needed, avoiding the problem of uneven flow during traditional single-pipe injection, allowing the resin to be smoothly pushed along the height direction of the mold 100, effectively reducing local bubble accumulation and glue shortage, and improving the overall uniformity of blade injection.

[0077] The sensor provides real-time feedback on the liquid level filling height, and the controller automatically controls the opening and closing timing of branch pipe 331, precisely executing the filling logic without manual intervention. This effectively avoids human judgment errors and ensures the stability and reliability of the filling process.

[0078] Specifically, the unopened branch pipe 331 is in a closed state, which can reduce the ineffective pumping area of ​​the vacuum system and concentrate the vacuum degree in the mold 100 in the current injection area.

[0079] In one embodiment, such as Figure 2 and Figure 3 As shown, each branch pipe 331 is provided with an injection connector 333 at its end, and the injection connector 333 is detachably connected to the flow channel 110.

[0080] Since the liquid injection connector 333 at the end of the branch pipe 331 is detachably connected to the flow channel 110, when changing different models of blade molds 100, no complicated operations or tools are required to quickly disassemble and adapt to the new mold 100, which can efficiently meet the production needs of multiple specifications of blades.

[0081] The branch pipe 331 is connected to the flow channel 110 through the injection connector 333. The injection connector 333 can ensure the sealing of the connection between the branch pipe 331 and the flow channel 110. Even with frequent disassembly, it can still maintain good sealing in the vacuum filling environment, avoid resin leakage or air entry, ensure stable filling pressure, and reduce filling defects caused by sealing problems.

[0082] Specifically, the detachable structure facilitates the separation and cleaning of the branch pipe 331 and the flow channel 110, allowing for timely removal of residual resin and preventing blockage of the branch pipe 331. In case of malfunction, the corresponding branch pipe 331 can also be disassembled for repair without disassembling the entire injection system, significantly reducing maintenance workload and consumable replacement costs.

[0083] Specifically, the injection connector 333 can be a quick-connect connector, a threaded connector, a flange connector, etc. In this embodiment, the type of injection connector 333 is not specifically limited.

[0084] In one embodiment, the sensor is configured as a pressure sensor, and multiple pressure sensors are provided, with each pressure sensor corresponding to a flow channel 110. The pressure sensors are used to detect the pressure at the flow channel 110.

[0085] Since the pressure sensor is installed in the flow channel 110, the liquid level filling height is determined by detecting the pressure change within the flow channel 110 (the air pressure is different between the resin-filled area and the unfilled area). Furthermore, each flow channel 110 corresponds to one pressure sensor, enabling segmented pressure monitoring along the height of the mold 100.

[0086] Specifically, the pressure sensor can also provide real-time feedback on the pressure changes of each flow channel 110. When the pressure of a certain flow channel 110 is abnormal (such as a sudden increase or decrease), it can be immediately determined whether there are problems such as resin blockage, injection dead zone or mold 100 leakage.

[0087] In one embodiment, such as Figure 1 and Figure 2 As shown, along the length of the mold 100, the lifting mechanism 200 is located at the injection port end of the mold 100 near the guide channel 110.

[0088] The lifting mechanism 200 is positioned on the mold 100 near the injection port of the guide channel 110, allowing direct adjustment of the height difference when the resin enters the mold 100, thus precisely controlling the initial injection pressure. Changes in the height of the buffer bag 310 can quickly act on the injection port, preventing slow resin flow due to insufficient pressure or resin impact due to excessive pressure, ensuring stable resin filling within the mold 100. Simultaneously, because the lifting mechanism 200 is located near the injection port of the guide channel 110, the length of the branch pipe 331 can be reduced.

[0089] In one embodiment, such as Figure 1 and Figure 2 As shown, the lifting mechanism 200 also includes a base 220, on which multiple wheels 221 are provided, spaced apart, and the lifting platform 210 is mounted on the base 220 in a liftable manner.

[0090] The lifting mechanism 200 and its base 220 are equipped with casters 221, allowing the lifting mechanism 200 to move freely and quickly switch to different mold 100 stations without disassembly. In scenarios with multiple molds 100 in parallel production, it can flexibly adapt to the pouring requirements of different specifications of blades, avoid duplicate equipment purchases, and significantly improve equipment utilization.

[0091] When the filling assembly 300 needs maintenance, the base 220 with wheels 221 can quickly move the lifting mechanism 200 out of the working area, avoiding operation in the narrow space around the mold 100. Whether it is replacing the buffer bag 310 or inspecting the first guide tube 320 and the second guide tube 330, it can be done more conveniently and efficiently, greatly improving maintenance efficiency.

[0092] Specifically, the walking wheel 221 can be a drive wheel, a swivel wheel, etc. In this embodiment of the application, the type of walking wheel 221 is not specifically limited.

[0093] In one embodiment, such as Figure 1 and Figure 2As shown, the lifting mechanism 200 also includes a guide assembly 230, which is mounted on the base 220. The lifting platform 210 is disposed on the guide assembly 230 and can move up and down along the direction of the guide assembly 230.

[0094] The guide assembly 230 is mounted on the base 220 to provide precise guidance for the lifting movement of the lifting platform 210, preventing swaying or deviation during the lifting process. When adjusting the height of the buffer bag 310, the lifting platform 210 rises and falls stably along the guide assembly 230, ensuring precise control of the height difference between the buffer bag 310 and the liquid level, maintaining stable injection pressure, and reducing uneven resin flow caused by unstable lifting.

[0095] In addition, the guide assembly 230 shares the load pressure of the lifting platform 210 and the buffer bag 310, preventing the lifting platform 210 from tilting or experiencing localized wear due to uneven force. Especially when bearing heavy buffer bags 310 and resin, the guide assembly 230 reduces mechanical wear and extends the overall service life of the lifting mechanism 200 by constraining the movement trajectory of the lifting platform 210.

[0096] Specifically, the guide component 230 can be a guide rail slider structure or a cylindrical guide post. In this embodiment, the structure of the guide component 230 is not specifically limited.

[0097] For example, taking the guide component 230 as a cylindrical guide post, 2-4 cylindrical guide posts are vertically installed on the base 220, and the lifting platform 210 cooperates with the cylindrical guide posts through linear bearings or copper sleeves.

[0098] In one embodiment, such as Figure 1 and Figure 2 As shown, the buffer bag 310 is fixedly installed on the lifting platform 210.

[0099] Because the buffer bag 310 is fixedly connected to the lifting platform 210, when the height of the lifting platform 210 is adjusted, the buffer bag 310 rises and falls synchronously with the lifting platform 210, avoiding deviations in the height difference between the buffer bag 310 and the liquid surface filling height due to loosening or displacement. During the filling process, it can be ensured that the height difference between the buffer bag 310 and the liquid surface filling height is always maintained within the process requirements, thereby stably controlling the filling pressure and ensuring uniform resin filling.

[0100] Furthermore, the fixedly installed buffer bag 310 remains in a stable position on the lifting platform 210. Even if it is subjected to fluid impact or equipment vibration during resin injection, it will not shift or shake. This effectively prevents leakage at the connection between the buffer bag 310 and the first guide pipe 320 and the second guide pipe 330 due to shaking. At the same time, it avoids injection pressure fluctuations caused by changes in the position of the buffer bag 310, thus improving the reliability of system operation.

[0101] Specifically, the buffer bag 310 can be fixedly installed on the lifting platform 210 by means of fastener connection or by means of binding. In this embodiment of the application, the connection method between the buffer bag 310 and the lifting platform 210 is not specifically limited.

[0102] According to an embodiment of the present invention, on the other hand, as... Figures 1 to 3 As shown, a wind turbine blade injection device is also provided, including a lifting mechanism 200, an injection assembly 300, a sensor, and a controller.

[0103] Specifically, such as Figure 1 As shown, the lifting mechanism 200 includes a drive member (not shown) and a lifting platform 210. The drive member is connected to the lifting platform 210 and is used to drive the lifting platform 210 to move along the height direction.

[0104] Specifically, such as Figure 1 As shown, the injection assembly 300 includes a buffer bag 310, a first guide pipe 320, and a second guide pipe 330. The buffer bag 310 is installed on the lifting platform 210. The buffer bag 310 is connected to the injection machine 340 through the first guide pipe 320, and the buffer bag 310 is connected to the guide channel 110 of the mold 100 through the second guide pipe 330.

[0105] Specifically, the sensor is used to detect the liquid level filling height inside the mold 100.

[0106] Specifically, the controller is electrically connected to the lifting mechanism 200 and the sensor respectively. The controller is configured to receive the liquid level filling height information detected by the sensor, and based on the liquid level filling height information, control the drive to adjust the height of the lifting platform 210 so that the height of the buffer bag 310 is adapted to the liquid level filling height.

[0107] This wind turbine blade injection equipment requires the use of a mold 100 when injecting resin into wind turbine blades. First, a buffer bag 310 is installed on the lifting platform 210 of the lifting mechanism 200. Then, a first guide pipe 320 connects the injection machine 340 and the buffer bag 310, allowing the injection machine 340 to deliver resin to the buffer bag 310 via the first guide pipe 320. The buffer bag 310 provides temporary storage space for the resin. Subsequently, a second guide pipe 330 is connected to both the buffer bag 310 and the guide channel 110. Under the vacuum environment of the mold 100, the resin flows into the guide channel 110 via the second guide pipe 330 for injection.

[0108] During the injection process, the liquid level inside the mold 100 is detected in real time by a sensor. The controller drives the lifting mechanism 200 to adjust the height of the lifting platform 210 according to the liquid level injection height, thereby changing the relative height between the buffer bag 310 and the liquid level injection height. This makes the buffer bag 310 match the liquid level injection height, effectively controlling the injection pressure, dynamically adapting to the pressure requirements during the injection process, avoiding pressure fluctuations caused by height differences, ensuring uniform resin injection, reducing problems such as uneven resin flow and air bubble residue, and improving the quality of blade molding.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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) is provided with a plurality of flow channels (110), and the plurality of flow channels (110) are spaced apart along the height direction of the mold (100); The lifting mechanism (200) includes a drive member and a lifting platform (210), wherein the drive member is used to drive the lifting platform (210) to move along the height direction of the mold (100); The filling assembly (300) includes a buffer bag (310), a first guide tube (320), and a second guide tube (330). The buffer bag (310) is disposed on the lifting platform (210). The buffer bag (310) is connected to the dispensing machine (340) through the first guide tube (320), and the buffer bag (310) is connected to the guide channel (110) through the second guide tube (330). Sensors are used to detect the liquid level filling height inside the mold (100); The controller is electrically connected to the lifting mechanism (200) and the sensor respectively. Based on the liquid level filling height information detected by the sensor, the controller controls the drive to adjust the height of the lifting platform (210) so that the height of the buffer bag (310) is adapted to the liquid level filling height.

2. The wind turbine blade injection device according to claim 1, characterized in that, The controller controls the difference H between the height of the buffer bag (310) and the liquid level filling height based on the liquid level filling height information detected by the sensor, so that 0mm≤H≤500mm.

3. The wind turbine blade injection device according to claim 2, characterized in that, The second guide tube (330) includes multiple branch tubes (331), each branch tube (331) is provided in a one-to-one correspondence with the guide channel (110), one end of each branch tube (331) is connected to the corresponding guide channel (110), and the other end is connected to the buffer bag (310); Each of the branch pipes (331) is provided with a switch valve (332), which is electrically connected to the controller. When the liquid level detected by the sensor reaches the position of the corresponding guide channel (110), the controller opens the switch valve (332) of the corresponding branch pipe (331).

4. The wind turbine blade injection device according to claim 3, characterized in that, Each of the branch pipes (331) is provided with an injection connector (333) at its end, and the injection connector (333) is detachably connected to the flow channel (110).

5. The wind turbine blade injection device according to claim 3, characterized in that, The sensor is configured as a pressure sensor, and the pressure sensor is set in a one-to-one correspondence with the flow channel (110). The pressure sensor is used to detect the pressure at the flow channel (110).

6. The wind turbine blade injection device according to any one of claims 1 to 4, characterized in that, Along the length of the mold (100), the lifting mechanism (200) is located at the injection port end of the mold (100) near the flow channel (110).

7. The wind turbine blade injection device according to any one of claims 1 to 4, characterized in that, The lifting mechanism (200) also includes a base (220), on which a plurality of wheels (221) are provided, and the lifting platform (210) is mounted on the base (220) in a liftable manner.

8. The wind turbine blade injection device according to claim 7, characterized in that, The lifting mechanism (200) further includes a guide component (230), which is disposed on the base (220), and the lifting platform (210) is raised and lowered along the guide component (230).

9. The wind turbine blade injection device according to claim 8, characterized in that, The buffer bag (310) is fixed on the lifting platform (210).

10. A wind turbine blade injection device, characterized in that, include: The lifting mechanism (200) includes a drive member and a lifting platform (210), wherein the drive member is used to drive the lifting platform (210) to move along the height direction; The filling assembly (300) includes a buffer bag (310), a first guide tube (320), and a second guide tube (330). The buffer bag (310) is disposed on the lifting platform (210). The buffer bag (310) is connected to the filling machine (340) through the first guide tube (320). The buffer bag (310) is connected to the guide channel (110) of the mold (100) through the second guide tube (330). Sensors are used to detect the liquid level filling height inside the mold (100); The controller is electrically connected to the lifting mechanism (200) and the sensor respectively. Based on the liquid level filling height information detected by the sensor, the controller controls the drive to adjust the height of the lifting platform (210) so that the height of the buffer bag (310) is adapted to the liquid level filling height.

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