An automatic perfusion system and method for a wind turbine blade

Abstract

An automatic pouring system and method for a wind power blade, comprising a valve control system corresponding to each pouring partition of the blade, a monitoring system for shooting real-time scenes of the pouring partition, and the valve control system and the monitoring system being in communication connection with an intelligent management platform, a central storage device, an upper computer and a display screen through corresponding Internet of Things gateway devices and switches; a flow guide net of the pouring partition of the blade is injected with resin through a resin injection pipeline, the resin injection pipeline is connected with a pouring machine through a resin flow channel, and the on-off of the resin of each pouring partition of the blade is controlled through the valve control system. The automatic pouring system and method for the wind power blade are used for pouring the blade, the automatic pouring system is automatically controlled throughout the process until the pouring is completed, the degree of automation is high, the dependence on personnel can be reduced, and the risk of pouring quality problems caused by insufficient experience or insufficient concentration of personnel can be reduced.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine blade injection technology, specifically relating to an automatic injection system and method for wind turbine blades based on visual monitoring and artificial intelligence recognition. Background Technology

[0002] Vacuum-assisted resin infusion molding technology (Vacuum infusion for short) is a high-performance, low-cost molding technology for composite materials, widely used in the molding and manufacturing of wind turbine blades. The process principle of vacuum infusion is to lay a fiber preform prepared according to structural and performance requirements on a mold, and then, under vacuum, allow liquid resin to flow within the fiber preform and impregnate the fibers. After heating and curing, cooling and demolding, a load-bearing composite material component is obtained.

[0003] Currently, the vacuum infusion process has a low degree of automation, requiring multiple experienced infusion personnel to closely monitor the resin wetting front and manually operate the injection valves. With the trend towards larger blades, the required personnel will increase even further. This presents two major problems: first, it is highly dependent on the experience and focus of the personnel; if the personnel lack experience or their focus decreases, the risk of infusion quality problems increases significantly; second, reliability is low, as individual judgments differ, making it impossible to guarantee the consistency and stability of the finished products. Summary of the Invention

[0004] To address the technical challenges of low automation and high reliance on human intervention in the vacuum filling of wind turbine blades, this invention provides an automatic filling system and method for wind turbine blades based on visual monitoring and artificial intelligence recognition.

[0005] The objective of this invention is achieved through the following technical solution. According to this invention, an automatic resin injection system for wind turbine blades includes a valve control system corresponding to each injection zone of the blade, and a monitoring system for capturing real-time scenes of the injection zones. The valve control system and the monitoring system are communicatively connected to an intelligent management platform, a central storage device, a host computer, and a display screen via their corresponding IoT gateways, switches, and other communication devices. The intelligent management platform, the central storage device, the host computer, and the display screen are also communicatively connected. Resin is injected into the flow guide network of each injection zone of the blade through injection pipelines. These injection pipelines are connected to the injection machine via resin channels. The valve control system controls the flow of resin in each injection zone of the blade.

[0006] Furthermore, the host computer is equipped with automatic injection software that issues injection commands to the PLC and issues stop injection commands based on frame-by-frame images captured by the monitoring system.

[0007] Furthermore, the switches corresponding to each of the aforementioned injection zones are connected to the intelligent management platform, central storage device, host computer, and display screen via aggregation layer switches.

[0008] Furthermore, the valve control system includes a connecting pipe for connecting the glue injection pipeline and the resin flow channel, a PLC for communicating with an IoT device, an automatic valve and a manual valve connected in series on the connecting pipe, a bracket on the mold flange of the blade, and a connecting pipe fixing device on the bracket. The connecting pipe fixing device includes a fixing seat, a pressure cap, and a latch. The pressure cap is rotatably mounted on the fixing seat. Both the fixing seat and the pressure cap have grooves that match the connecting pipe. The connecting pipe is limited in the grooves of the fixing seat and the pressure cap. The pressure cap and the fixing seat are fixed by the latch. The bracket also has a servo motor that communicates with the PLC. The servo motor is connected to the input shaft of the reducer. The output shaft of the reducer is connected to a contour tightening seat. The contour tightening seat has a groove to accommodate the valve stem of the limit automatic valve.

[0009] An automatic injection method for wind turbine blades, characterized in that:

[0010] The blades are divided into different injection zones according to radial and chordal directions. Each injection zone is equipped with a flow guide net and a glue injection pipeline. Then, the entire surface of the blades is covered with a vacuum bag film to establish a vacuum. Then, resin flow channels are laid out, and the glue injection pipeline is connected to the injection machine through the resin flow channels. A valve control system is installed at the connection between the resin flow channels and the glue injection pipeline.

[0011] Turn on the host computer and start the automatic injection software within it. The built-in node counter function of the automatic injection software is cleared to zero. At the same time, the monitoring system is turned on. The host computer issues an injection command, which is transmitted to the valve control system. According to the preset sequence built into the automatic injection software, the automatic valves in some or all injection zones are opened to start injection.

[0012] The monitoring system transmits and stores the real-time scene of the irrigation zone in the central storage device. At the same time, the intelligent management platform transmits the real-time scene of each irrigation zone to the automatic irrigation software of the host computer, and the display screen shows the real-time scene of the irrigation zone.

[0013] Each injection zone is displayed independently within the automatic injection software. The automatic injection software performs frame-by-frame image processing and calculation on each independently displayed screen. When the area ratio of resin impregnation in any injection zone exceeds the area ratio threshold, the automatic injection software automatically issues a command to drive the valve control system responsible for the corresponding injection zone to close the automatic valve.

[0014] After the pouring is completed, the host computer issues a command to control the mold temperature controller to start the heating program for heating and curing.

[0015] Furthermore, when installing the valve control system, the connecting pipe is manually placed into the fixing seat, while the ball valve stem is placed into the conformal tightening seat, and then the connecting pipe is fixed by the locking buckle.

[0016] Furthermore, when an automatic valve is closed, a node stop signal is fed back. When the automatic injection software receives the node stop signal, the built-in node counting function increments the count by 1 and performs a judgment. If the count of the built-in counting function is less than the set value, it means that the blade is in the state of continuing injection; otherwise, it means that the blade has stopped injection.

[0017] Furthermore, operators can monitor the on-site grouting status through the display screen at their workstations. If any problems occur during grouting, they can manually control the manual valve.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The automatic grouting system and method for wind turbine blades of this invention are used for blade grouting. The automatic grouting system controls the entire process automatically until the grouting is completed. The high degree of automation reduces reliance on personnel and lowers the risk of grouting quality problems caused by insufficient personnel experience or lack of focus.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is an architectural diagram of an embodiment of an automatic injection system for wind turbine blades according to the present invention;

[0022] Figure 2 This is a schematic diagram of the blade infusion zone and equipment layout in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the valve control system in an embodiment of the present invention.

[0024] [Attached image labels]

[0025] 1-Host computer, 101-Display screen, 2-Blade, 3-Monitoring system, 4-Valve control system, 401-PLC, 402-Servo motor, 403-Reducer, 404-Contour tightening seat, 405-Automatic valve, 406-Manual valve, 407-Fixed seat, 408-Cap, 409-Lock, 410-Origin sensor, 411-Connecting pipe, 412-Bracket, 5-Injection piping, 6-Injection machine, 7-Resin flow channel, 8-Injection zone, 9-Intelligent management platform, 10-Central storage device, 11-Aggregation layer switch, 12-Switch, 13-IoT gateway device. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] An embodiment of the automatic injection system for wind turbine blades according to the present invention is as follows: Figures 1 to 3 As shown, the system includes an intelligent management platform 9 and a central storage device 10 located in the central data center, a host computer 1 and a display screen 101 located at each workstation, and switches 12, IoT gateways 13, a monitoring system 3, and a valve control system 4 located in the workshop. The workshop has multiple workstations, each equipped with the same switches 12, IoT gateways 13, monitoring system 3, and valve control system 4. The monitoring system 3 and valve control system 4 at each workstation communicate with the intelligent management platform 9, the central storage device 10, the host computer 1, and the display screen 101 via the IoT gateways 13 and switches 12. The switches 12 at multiple workstations communicate with the intelligent management platform 9, the central storage device 10, the host computer 1, and the display screen 101 via an aggregation layer switch 11. The host computer 1 and the display screen 101 also communicate with the intelligent management platform 9 and the central storage device 10 in the central data center. In this embodiment, the monitoring system 3 uses a high-definition PTZ camera, and the monitoring system 3 is positioned above the blade 2.

[0028] In other embodiments of the present invention, the number of monitoring systems 3, switches 12, and IoT gateways 13 can be reduced as needed. Multiple workstations can share a single monitoring system, switch 12, or IoT gateway 13, as long as the real-time scene of each workstation can be captured and the signal is transmitted correctly.

[0029] The blade 2 is divided into different filling zones 8 along the radial and chordal directions. Each filling zone 8 corresponds to a workstation. Each filling zone 8 is equipped with a guide net and a glue injection pipeline 5. In this embodiment, the glue injection pipeline 5 consists of an ohmic tube and a T-tube. After setting up the guide net and glue injection pipeline 5 in each filling zone 8, a vacuum bag film is covered on the entire surface of the blade 2 to establish a vacuum, and then the resin flow channel 7 is laid out. The glue injection pipeline 5 is connected to the filling machine 6 through the resin flow channel 7. A valve is set at the connection between the glue injection pipeline 5 and the resin flow channel 7. In this embodiment, the valve is a ball valve, which includes an automatic valve 405 and a manual valve 406. The resin is transported to the guide net of the blade 2 through the filling machine 6, the resin flow channel 7, and the glue injection pipeline 5. By controlling the ball valve, the resin can be independently delivered to each filling zone 8. In this embodiment, the automatic valve 405 and the manual valve 406 are connected in series at the connection between the glue injection pipeline 5 and the resin flow channel 7, which can automatically or manually control, adjust, or cut off the resin flow.

[0030] The automatic adjustment or cutoff of resin flow is controlled by valve control system 4. Before resin injection, valve control system 4 is installed on connecting pipe 411, which connects injection line 5 and resin flow channel 7. Connecting pipe 411 is a rigid pipe. After installation, the preparation work before injection is completed. Valve control system 4 is installed on mold flange of blade 2 via bracket 412. All parts of valve control system 4 are fixed to bracket 412 with bolts and nuts. Valve control system 4 includes PLC 401, servo motor 402, reducer 403, contour tightening seat 404, automatic valve 405, manual valve 406, fixing seat 407, pressure cap 408, latch 409, and origin sensor 410.

[0031] Automatic valve 405 and manual valve 406 are connected in series on connecting pipe 411. A connecting pipe fixing device is provided on bracket 412. The connecting pipe fixing device includes fixing seat 407, pressure cap 408, and lock 409. Fixing seat 407 is provided on bracket 412, and pressure cap 408 is rotatably mounted on fixing seat 407. Both fixing seat 407 and pressure cap 408 are provided with grooves that match the connecting pipe 411. First, the connecting pipe 411 is placed in the groove of fixing seat 407, and then pressure cap 408 is fastened. The groove on pressure cap 408 matches the connecting pipe 411, limiting the connecting pipe 411 on the connecting pipe fixing device. Then, pressure cap 408 and fixing seat 407 are fixed by lock 409, thereby fixing the connecting pipe 411. In this embodiment, two connecting pipe fixing devices are provided to fix the same connecting pipe 411. When the connecting pipe 411 is placed on the connecting pipe fixing device, the valve stem of the automatic valve 405 is simultaneously placed in the conformal tightening seat 404.

[0032] PLC 401 controls the servo motor 402 to rotate according to the filling command issued by host computer 1. The servo motor 402 is connected to the input shaft of the reducer 403, and the output shaft of the reducer 403 is connected to the contour tightening seat 404, which has a groove to accommodate the valve stem of the limit automatic valve. The servo motor 402 rotates according to the command from PLC 401, driving the reducer 403 and the contour tightening seat 404 to rotate by a certain angle, thereby controlling the rotation angle of the automatic valve stem and realizing the regulation of resin flow by the automatic valve 405. In the initial state, the manual valve 406 is in the open state. A home point sensor 410 is installed near the output shaft of the reducer 403 to sense whether the contour tightening seat 404 has rotated into place, and then to monitor whether the automatic valve 405 has rotated into place and closed tightly. Since vacuum filling requires a high degree of vacuum, the home point sensor 410 monitors the position of the automatic valve 405 at the beginning and end of the filling process and feeds it back to the PLC. The PLC controls the automatic valve 405 to rotate into place, ensuring that the automatic valve 405 is tightly closed and leak-free at its position.

[0033] In other embodiments of the present invention, the valve control system 4 may also be replaced with other existing valves capable of controlling the flow of liquid based on signals.

[0034] Automatic injection software is installed in host computer 1. Personnel operate host computer 1 to start the automatic injection software and issue injection commands. According to the preset injection sequence built into the software, some or all of the automatic valves 405 corresponding to injection zone 8 open, and injection begins. The preset injection sequence in the automatic injection software is determined by process requirements, and the preset injection sequence differs for different blade types. After starting the automatic injection software, the built-in node counting function is reset to zero. The node counting function is used to count the number of automatic valves that have completed injection.

[0035] The monitoring system 3 is started simultaneously with the automatic injection software. When injection begins, the monitoring system 3 starts working at the same time, transmitting real-time scenes such as the resin impregnation status of each injection zone 8 to the central data room through IoT gateway device 13 and switch 12, and storing the data in the central storage device 10. The intelligent management platform 9 is used to manage the stored video. At the same time, the intelligent management platform 9 transmits the real-time scene to the automatic injection software of the host computer 1 and displays it on the display screen 101.

[0036] The real-time scene of each irrigation zone 8 is transmitted to the automatic irrigation software and displayed independently on the display screen 101. The automatic irrigation software selects and numbers each irrigation zone 8. The selection range includes the entire area of ​​each irrigation zone 8. Due to the irregular shape of the blade, the boundaries of some irrigation zones 8 are straight lines and others are arcs. The automatic irrigation software identifies the boundaries of each irrigation zone 8 and selects irrigation zones 8 with different shapes, and then calculates the area of ​​each irrigation zone. At the same time, the automatic irrigation software selects the resin impregnation range in each irrigation zone 8. The automatic irrigation software can detect and identify the resin impregnation front (i.e., the edge of the resin impregnation area in the blade), and then select the resin impregnation area enclosed by the front and the boundary of the irrigation zone, or select the resin impregnation area surrounded by the front, and then calculate the area of ​​the resin impregnation range.

[0037] In this embodiment, when processing a batch of blades using the same tool, the number of infusion zones 8 is already determined, the relative positions of the monitoring system 3, the mold, and the blades to be infused are fixed, and the positions of the images captured by the monitoring system 3 and transmitted to the automatic infusion software remain unchanged. The selection range and area of ​​the infusion zones 8 in the automatic infusion software are already determined and can be set in advance in the automatic infusion software, eliminating the need for re-identification during the infusion process, thus saving computational power. Only the range of resin impregnation needs to be identified, selected, and calculated. When setting the selection range and area of ​​the infusion zones 8 in the automatic infusion software, the range and area of ​​the infusion zones 8 can be determined by the image captured by the monitoring system 3 and transmitted to the automatic infusion software when the first blade in a batch is infused, and then the data of the infusion zones 8 is set in the automatic infusion software.

[0038] The number of infusion zones 8 is determined based on factors such as blade size, model, and manufacturing process. In this embodiment, the automatic infusion software has 6*6 independent display screens built-in and displayed on the display screen 101. Each independent display screen corresponds one-to-one with an infusion zone 8. Before infusion, the operator confirms the conditions. After confirmation, the operator issues a start infusion command through the automatic infusion software.

[0039] The injection command is sent to the IoT switch device 13 via the 485 interface. The IoT switch device 13 transmits the injection command to the valve control system 4, which drives the automatic valve 405 to open at a certain angle. In this embodiment, the opening angle is 1 / 3 or 1 / 4 of the angle when the automatic valve is fully open.

[0040] After the infusion begins, the automatic infusion software performs frame-by-frame image processing and calculation on each independent display screen. Image processing includes grayscale processing and resin impregnation edge detection and recognition, identifying the range of resin impregnation within the infusion zone. Image calculation includes calculating the area of ​​the resin impregnation range and the ratio of the resin impregnation range area to the area of ​​the corresponding infusion zone. The automatic infusion software sets an area ratio threshold. When the ratio of the resin impregnation range area of ​​any infusion zone 8 to the area of ​​the corresponding infusion zone exceeds the set area ratio threshold, the automatic infusion software automatically issues a command to drive the valve control system 4 responsible for that infusion zone 8 to close the automatic valve 405. If some automatic valves are opened for infusion when infusion is started, after the automatic infusion software issues a command to close the automatic valves, it can start the next infusion zone in a preset order until all infusion zones have been infused. While closing the automatic valve 405, a node stop signal is sent to the automatic injection software. Upon receiving the node stop signal, the automatic injection software increments the built-in node counting function by 1 and performs a judgment. If the built-in counting function is less than the set value (the number of injection zones 8), it indicates that the blade is continuing to inject; otherwise, it indicates that the blade has stopped injecting and the injection process is complete. In this embodiment, the set value is 32, that is, the number of injection zones 8 of the blade is 32.

[0041] During the pouring process, the operator can monitor the pouring status in real time through the display screen 101 at the workstation. If any problems occur, the operator can manually control the pouring by operating the manual valve 406. After the pouring is completed, the host computer 1 issues a command to control the mold temperature controller to start the heating program for heating and curing.

[0042] An embodiment of the automatic injection method for wind turbine blades according to the present invention includes the following steps:

[0043] Step 1: Divide the blade into different filling zones 8 according to radial and chordal directions. Arrange the flow guide net and glue injection pipeline 5 in each filling zone 8. Then cover the entire surface of the blade with a vacuum bag film to establish a vacuum. Then lay out the resin flow channel 7. Connect the glue injection pipeline 5 to the filling machine 6 through the resin flow channel 7. Set up a valve control system 4 at the connection between the resin flow channel 7 and the glue injection pipeline 5.

[0044] When installing the valve control system 4, the connecting pipe 411 is manually placed into the fixed seat 407, and the ball valve stem is placed into the conformal tightening seat 404. Then, the connecting pipe 411 is fixed by the locking buckle 409.

[0045] Step 2: Open the host computer 1 and start the automatic injection software in the host computer 1. The built-in node count function is cleared. At the same time, the monitoring system 3 is turned on. After confirming the pre-injection conditions, an injection command is issued. The injection command is transmitted to the valve control system 4. According to the preset sequence built into the automatic injection software, the automatic valves 405 in some or all injection zones are opened to start injection.

[0046] Step 3: The real-time scene of the irrigation partition 8 is transmitted and stored in the central storage device 10 through the monitoring system 3. At the same time, the real-time scene of each irrigation partition 8 is transmitted to the automatic irrigation software of the host computer 1 through the intelligent management platform 9. The real-time scene of the irrigation partition 8 is displayed on the display screen 101.

[0047] Step 4: Each injection zone 8 is displayed independently in the automatic injection software. The automatic injection software performs frame-by-frame image processing and calculation on each independently displayed screen. When the area ratio of resin impregnation in any injection zone exceeds the area ratio threshold, the automatic injection software automatically issues a command to drive the valve control system 4 responsible for that injection zone 8 to close the automatic valve 405. The automatic injection software can start the next injection zone 8 in a preset order until all injection zones 8 have completed injection.

[0048] When an automatic valve 405 is closed, a node stop signal is fed back. When the automatic injection software receives the node stop signal, the built-in node counter function is incremented by 1, and a judgment is performed. If the count of the built-in counter function is less than the set value, the blade is in the state of continuing injection; otherwise, the blade stops injection.

[0049] Operators can check the on-site grouting status through the display screen 101 at the workstation. If a problem occurs during grouting, they can manually control the manual valve 406.

[0050] Step 5: After the pouring is completed, the host computer issues a command to control the mold temperature controller to start the heating program for heating and curing.

[0051] The automatic grouting system and method for wind turbine blades of this invention are used for blade grouting. The automatic grouting system controls the entire process automatically until the grouting is completed. The high degree of automation reduces reliance on personnel and lowers the risk of grouting quality problems caused by insufficient personnel experience or lack of focus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic injection system for wind turbine blades, characterized in that: The system includes a valve control system corresponding to each blade injection zone and a monitoring system for capturing real-time scenes of the injection zones. The valve control system and monitoring system communicate with the intelligent management platform, central storage device, host computer, and display screen via their corresponding IoT gateways, switches, and other communication devices. The intelligent management platform, central storage device, host computer, and display screen communicate with each other. Resin is injected into the flow guide network of each blade injection zone through corresponding injection pipelines. These injection pipelines are connected to the injection machine via resin flow channels. The valve control system controls the flow of resin in each blade injection zone. The host computer is equipped with automatic injection software that issues injection commands to the PLC and stops injection commands based on frame-by-frame images captured by the monitoring system. The injection software selects and numbers each injection zone and calculates the area of ​​each injection zone. The automatic injection software selects the resin impregnation range in each injection zone. It detects and identifies the resin impregnation front and then selects the resin impregnation area enclosed by the front and the injection zone boundary, or selects the resin impregnation area enclosed by the front, and then calculates the area of ​​the resin impregnation range. The automatic injection software sets an area ratio threshold. When the ratio of the area of ​​the resin impregnation range of any injection zone to the area of ​​the corresponding injection zone exceeds the set area ratio threshold, the automatic injection software automatically issues a command to drive the valve control system responsible for that injection zone to close the valve control system.

2. The automatic injection system for wind turbine blades according to claim 1, characterized in that: Each of the aforementioned injection zones is connected to the intelligent management platform, central storage device, host computer, and display screen via an aggregation layer switch.

3. The automatic injection system for wind turbine blades according to claim 1, characterized in that: The valve control system includes a connecting pipe for connecting the glue injection pipeline and the resin flow channel, a PLC for communication with an IoT device, an automatic valve and a manual valve connected in series on the connecting pipe, a bracket on the mold flange of the blade, and a connecting pipe fixing device on the bracket. The connecting pipe fixing device includes a fixing seat, a pressure cap, and a latch. The pressure cap is rotatably mounted on the fixing seat. Both the fixing seat and the pressure cap have grooves that match the connecting pipe. The connecting pipe is limited in the grooves of the fixing seat and the pressure cap. The pressure cap and the fixing seat are fixed by the latch. The bracket also has a servo motor for communication with the PLC. The servo motor is connected to the input shaft of the reducer. The output shaft of the reducer is connected to a contour tightening seat. The contour tightening seat has a groove to accommodate the valve stem of the limit automatic valve.

4. An automatic injection method for wind turbine blades, characterized in that: The blades are divided into different injection zones according to radial and chordal directions. Each injection zone is equipped with a flow guide net and a glue injection pipeline. Then, the entire surface of the blades is covered with a vacuum bag film to establish a vacuum. Then, resin flow channels are laid out, and the glue injection pipeline is connected to the injection machine through the resin flow channels. A valve control system is installed at the connection between the resin flow channels and the glue injection pipeline. Turn on the host computer and start the automatic injection software within it. The built-in node counter function of the automatic injection software is cleared to zero. At the same time, the monitoring system is turned on. The host computer issues an injection command, which is transmitted to the valve control system. According to the preset sequence built into the automatic injection software, the automatic valves in some or all injection zones are opened to start injection. The monitoring system transmits and stores the real-time scene of the irrigation zone in the central storage device. At the same time, the intelligent management platform transmits the real-time scene of each irrigation zone to the automatic irrigation software of the host computer, and the display screen shows the real-time scene of the irrigation zone. Each injection zone is displayed independently within the automatic injection software. The automatic injection software performs frame-by-frame image processing and calculation on each independently displayed screen. It selects and numbers each injection zone and calculates the area of ​​each injection zone. The automatic injection software selects the resin impregnation range within each injection zone. It detects and identifies the resin impregnation front and then selects the resin impregnation area enclosed by the front and the injection zone boundary, or selects the resin impregnation area surrounded by the front, thereby calculating the area of ​​the resin impregnation range. When the resin impregnation area ratio in any injection zone exceeds the area ratio threshold, the automatic injection software automatically issues a command to drive the valve control system responsible for the corresponding injection zone to close the automatic valve. After the pouring is completed, the host computer issues a command to control the mold temperature controller to start the heating program for heating and curing.

5. The automatic injection method for wind turbine blades according to claim 4, characterized in that: When installing the valve control system, the connecting pipe is manually placed into the fixed seat, and the ball valve stem is placed into the conformal tightening seat. Then, the connecting pipe is fixed by the locking buckle.

6. The automatic injection method for wind turbine blades according to claim 4, characterized in that: When an automatic valve is closed, a node stop signal is fed back. When the automatic injection software receives the node stop signal, the built-in node counter function increments the count by 1 and performs a judgment. If the count of the built-in counter function is less than the set value, it means that the blade is in the state of continuing injection; otherwise, it means that the blade has stopped injection.

7. The automatic injection method for wind turbine blades according to claim 4, characterized in that: Operators can monitor the on-site grouting status through the display screen at their workstations. If any problems occur during grouting, they can manually control the manual valve.

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