A gas-lift type algae blocking net

Abstract

The application provides an air-lift type algae blocking net, which comprises a water body inner part and a water body outer part, the water body outer part comprises a control unit, a wireless communication unit, a positive pressure gas buffer tank, a negative pressure gas buffer tank, a three-way electromagnetic valve and a one-to-many valve, the water body inner part comprises a plurality of segmented structures; each segmented structure comprises a gas transmission pipeline, an air-filled floating body unit, an air filling and discharging port of the air-filled floating body unit and a depth sensor fixed to the lower side of the air-filled floating body unit, the air-filled floating body unit is vertically connected with an algae blocking water-impermeable curtain, and the lower end of the algae blocking water-impermeable curtain is connected with a sinking unit; the number of the segmented structures is determined according to the actual blocking length; and the control unit controls the plurality of segmented structures in a segmented manner. The depth of the algae blocking net can be adjusted as required, the algae blocking net can be used in a flexible multi-segmented manner, and the algae blocking net can be controlled in a segmented manner as an independent unit to adapt to different application requirements.

Description

Technical Field

[0001] This application relates to the field of water environment protection technology, and more specifically, to an airlift algae-blocking net. Background Technology

[0002] In recent years, against the backdrop of rapid economic and social development, the trend of eutrophication in water bodies has intensified, and algal blooms have evolved into a global challenge for aquatic ecological governance. Algal blooms not only lead to a decline in aquatic biodiversity, but the released algal toxins and volatile sulfur compounds also directly threaten the safety of drinking water sources, increase the operational pressure on wastewater treatment facilities, and pose multiple risks to waterfront living environments. Algal prevention and control are crucial tasks in aquatic governance.

[0003] Algae are highly dependent on sunlight, and some algae even form large clumps floating on the water surface. Therefore, algae mainly accumulate in the upper layers of water. Algae-blocking nets, as floating interception devices, can control high-concentration algae-laden water within a certain area, preventing further spread of pollution. Furthermore, as a pollution-free physical barrier, algae-blocking nets can be used sustainably after a single investment, thus they are widely used in the ecological management of algae in rivers and lakes. However, due to differences in climate, meteorology, and functional attributes of water bodies, traditional algae-blocking nets cannot meet the complex demands of aquatic environments. In addition to conventional algae interception, they also need to be able to withstand flood impacts, ship navigation, and backflow.

[0004] Currently, the mainstream algae-blocking nets are mainly divided into ordinary algae-blocking nets, retractable algae-blocking nets, and lifting algae-blocking nets (fences).

[0005] Ordinary algae-blocking nets are an improvement on traditional floating debris-blocking nets used in river channels. The main difference is that the permeable mesh at the bottom of the net is replaced with a completely impermeable fabric. When the net spans the river, it blocks water from the surface to a certain depth, restricting surface water flow and preventing the spread of high-concentration algae-laden water. Existing traditional algae-blocking net technologies mainly include fixed nets, floating nets, and V-shaped interception devices. Fixed nets are constructed of sturdy materials and require a frame or support fixed to the bottom of the waterway or the riverbank. They typically require manual adjustments to adapt to changes in water flow. Floating nets use floats or buoys, allowing the net to rise and fall with the water level. This helps adapt to changes in water level, but may affect its stability at high water levels. V-shaped interception devices, shaped like an inverted V, effectively intercept garbage and floating debris on the water surface. They are relatively easy to maintain but may create some resistance to water flow. Once installed, ordinary algae-blocking nets are generally fixed in place unless altered by human intervention. They cannot automatically adapt to significant changes in water level or sudden flood impacts, requiring manual adjustments. However, algae-blocking nets are typically deployed at different river mouths, making their locations quite dispersed. Furthermore, when used in wider river channels, the weight of the nets and the impact of the water flow make manual adjustments time-consuming and laborious, hindering timely adjustments.

[0006] The retractable algae-blocking net adds a motor-driven retractable mechanism and supporting devices to the ordinary algae-blocking net, which can fully open and block algae. However, each time it needs to be opened for blocking, it is necessary to start from the riverbank and open or partially open the algae-blocking net. The range of movement is large, and it is necessary to overcome the impact force and resistance of the water flow. The energy consumption is large and the response time is slow.

[0007] Lift-type algae-blocking nets are currently devices similar to mechanical gates. They primarily use rigid mesh and are deployed in narrow areas such as gate openings. They incorporate manually adjustable control units and are driven by mechanical transmission, adjusting to changes in water level and the depth at which different types of algae are intercepted. Due to their lifting characteristics, similar to sluice gates, lift-type algae-blocking nets are generally not suitable for wider waterways, thus having certain limitations. Furthermore, because the lifting motion relies on mechanical transmission, the foundation piles are typically larger and taller, resulting in higher costs and land occupation. The structure is also more complex, leading to relatively higher maintenance costs. Utility Model Content

[0008] In view of this, this application provides an airlift algae-blocking net to overcome the above-mentioned defects of the prior art.

[0009] To achieve the above objectives, the technical solution adopted in this application is as follows: An airlift algae-blocking net includes an inner water section and an outer water section. The outer water section includes a control unit, a wireless communication unit, a positive pressure gas buffer tank, a negative pressure gas buffer tank, a three-way solenoid valve, and a one-turn multi-way valve. The inner water section includes multiple segmented structures. Each segmented structure includes a gas transmission pipeline, an air-inflated floating unit, an air-inflation port for the air-inflated floating unit, and a depth sensor fixed to the lower side of the air-inflated floating unit. The air-inflated floating unit is vertically connected to an algae-blocking impermeable curtain, and the lower end of the algae-blocking impermeable curtain is connected to a sinking unit. One end of each gas transmission pipeline is connected to the one-turn multi-way valve, and the other end is connected to the air-inflated floating unit. The air flotation unit is connected to the air inlet / outlet; one end of the three-way solenoid valve is connected to the one-turn multi-way valve, and the other two ends are connected to the positive pressure gas buffer tank and the negative pressure gas buffer tank respectively; a channel gas solenoid valve is provided at the air inlet of each gas transmission pipeline; the number of the segmented structures is determined according to the actual interception length; the control unit performs segmented control on the multiple segmented structures; furthermore, the sinking unit includes a concrete block and a traction rope, the traction rope connecting the lower end of the algae-blocking impermeable curtain and the concrete block; the wireless communication unit is a 4G or 5G wireless communication network; the algae-blocking impermeable curtain is made of PVC (Polyvinyl chloride), and a partition is provided at the bottom, with a heavy iron chain installed inside the partition.

[0010] Furthermore, the body outside the water body also includes an air compressor and a vacuum pump. When the gas pressure in the positive pressure gas buffer tank is lower than the first control threshold, the air compressor will automatically start and replenish compressed air into the positive pressure gas buffer tank; when the gas pressure in the negative pressure gas buffer tank is higher than the second control threshold, the vacuum pump will automatically start and extract the gas from the negative pressure gas buffer tank.

[0011] Furthermore, each gas transmission pipeline is equipped with a channel gas pressure sensor to monitor the gas pressure inside each gas transmission pipeline and the corresponding inflatable float unit; the upper end of the inflatable float unit is equipped with a safety pressure relief valve to automatically release pressure and gas when the pressure inside the inflatable float unit is too high.

[0012] Furthermore, the outer part of the water body also includes interconnected anchor rods and traction steel wire ropes, as well as a tension sensor fixed to the traction steel wire ropes; the traction steel wire ropes are connected and bound to the algae-blocking net, the anchor rods are inserted into the riverbank for fixation, and the tension sensor is used to monitor the tension value on the traction steel wire ropes to prevent excessive tension from damaging the algae-blocking nets.

[0013] Furthermore, the control unit, positive pressure gas buffer tank, negative pressure gas buffer tank, air compressor, and vacuum pump are all located in the riverbank monitoring room. Cameras are installed both inside and outside the monitoring room. The camera inside the monitoring room is used to monitor the indoor equipment, while the camera outside the monitoring room is used to monitor the water surface conditions and the working status of the water body. An audible and visual alarm is installed outside the monitoring room for safety warnings before each inflation or deflation.

[0014] Furthermore, the external part of the water body also includes a remote cloud service platform, which is used to receive data uploaded by the control unit and establish other databases. The other databases collect water flow velocity, chlorophyll concentration and meteorological information. The cloud service platform also calculates and stores all the received data through a computational model.

[0015] Furthermore, the remote cloud service platform includes a web access function module and a visualization display module. The visualization display module displays the received data and prediction results through a visual interface. The web access function module is used to notify relevant staff of abnormal indicators via SMS or to issue remote control commands to the control unit through preset logic to adjust the status of the algae blocking net.

[0016] Compared with the prior art, the beneficial effects of this application are: 1. Compared with ordinary algae-blocking nets, this application can realize dynamic management of the nets, which can adapt to changes in water level and can also be quickly and easily adjusted through the 4G or 5G network of the control center. The status of the algae-blocking nets can be changed through remote network and monitoring, without the need for personnel to go to the site. Multiple sets of equipment can be operated at the same time, which is not only efficient, but also saves time and effort.

[0017] 2. Compared with the lifting algae-blocking sluice gate, this application can be applied to a wider range of river widths, uses smaller foundation piles, and requires less investment.

[0018] 3. Enhanced intelligence and security: This application incorporates multiple types of sensors and automated control logic, possessing a certain degree of autonomous judgment capability. It can promptly assess and respond to various emergencies even when unattended. 4. This application can remotely control the creation of gaps in the waterway to facilitate the passage of vessels and improve their navigation.

[0019] 5. This application makes the prevention and control of algal backflow more effective. When algal backflow occurs or the upstream water flow is small, it intercepts the high concentration of algae-containing water downstream. When the upstream water flow is large, it can form a gap in the water surface without affecting the water flow. At the same time, it can push a small amount of algae-containing water that has escaped the algae-blocking layer downstream.

[0020] 6. This application can be used for segmented control and interception, and can flexibly intercept algae. Especially under specific circumstances, it can intercept algae that accumulate on both sides of the riverbank and maintain open flow in the middle of the river, so as to both intercept algae and maintain the flow and navigation of the river. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a diagram showing the deployment interface of the airlift algae-blocking net when the inflatable floating unit of this application is inflated and floats.

[0023] Figure 2 This is a diagram showing the deployment interface of the air-lift algae-blocking net when the inflatable floating unit of this application deflates and sinks.

[0024] Figure 3 This is a schematic diagram of the composition and structure of an airlift algae-blocking net according to this application.

[0025] Figure 4 This is a system control structure diagram of an airlift algae-blocking net according to this application.

[0026] In the diagram: 1. Control cabinet; 2. Air compressor; 3. Positive pressure gas buffer tank; 4. Vacuum pump; 5. Negative pressure gas buffer tank; 6. Three-way solenoid valve; 7. One-turn multi-way valve; 8. Channel 1 gas solenoid valve; 9. Channel 1 gas pressure sensor; 10. Channel 2 gas solenoid valve; 11. Channel 2 gas pressure sensor; 12. Indoor camera; 13. Outdoor camera; 14. Audible and visual alarm; 15. 4G or 5G wireless communication network; 16. Gas transmission pipeline; 17. Anchor bolt and traction steel wire rope; 18. Tension sensor; 19. Float unit 1 inflation / deflation port; 20. Inflatable float unit 1; 21. Depth sensor 1; 22. Safety pressure relief valve 1; 23. Float unit 2 inflation / deflation port; 24. Inflatable float unit 2; 25. Depth sensor 2; 26. Safety pressure relief valve 2; 27. Algae-blocking impermeable curtain; 28. Natural water body; 29. ​​Concrete slab and traction rope. Detailed Implementation

[0027] 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.

[0028] An airlift-type algae-blocking net includes an inner water section and an outer water section. The outer water section includes a control unit, a wireless communication unit, a positive pressure gas buffer tank, a negative pressure gas buffer tank, a three-way solenoid valve, and a single-turn multi-way valve. The inner water section includes multiple segmented structures. Each segmented structure includes a gas transmission pipeline, an air-filled float unit, an air-filled float unit inflation / deflation port, and a depth sensor fixed to the lower side of the air-filled float unit. The air-filled float unit is vertically connected to an algae-blocking impermeable curtain, and the lower end of the algae-blocking impermeable curtain is connected to a sinking unit. One end of each gas transmission pipeline is connected to the single-turn multi-way valve, and the other end is connected to the air-filled float unit inflation / deflation port. One end of each three-way solenoid valve is connected to the single-turn multi-way valve, and the other two ends are connected to the positive pressure gas buffer tank and the negative pressure gas buffer tank, respectively. A channel gas solenoid valve is provided at the air inlet of each segment of the gas transmission pipeline. The number of segmented structures is determined according to the actual interception length. The control unit performs segmented control of the multiple segmented structures.

[0029] In practical applications, this application allows for multi-segment structures to be connected in parallel based on the interception length, and segmented control can be implemented. In this specific embodiment, for example... Figures 1-3 As shown, two segmented structures are used as examples.

[0030] Specifically, the control unit can be a control cabinet 1, which can realize local electrical control; the three-way solenoid valve 6 is a gas path switching component, which allows the gas path to switch between the inflation gas path and the deflation gas path; the one-turn multi-way valve 7 can connect multiple gas paths in parallel; the channel one gas solenoid valve 8 and the channel two gas solenoid valve 10 control the opening and closing of the gas paths in channel one and channel two, respectively; the gas transmission pipeline 16 is a gas transmission connection component; the float unit one inflation / deflation port 19 and the float unit two inflation / deflation port 23 are gas transmission connection components for the inflation float unit; the inflation float unit one 20 and the inflation float unit two 24 are the algae-blocking net inflation / deflation units, which provide different buoyancy through the internal air pressure value of the inflation float unit, thereby controlling the interception depth of the algae-blocking net. Depth sensor 1 21 and depth sensor 2 25 are attached to the lower part of the outside of the inflatable float unit to monitor the water depth of the inflatable float unit; the algae-blocking impermeable curtain 27 is made of PVC impermeable material and has a partition at the bottom with a built-in counterweight iron chain to keep the PVC impermeable cloth extending vertically downward; the algae-containing natural water body 28 is a high-concentration algae-containing water body that needs to be restricted, and the sinking unit can specifically be a concrete sink block and a traction rope 29, which serve as a device for fixing and limiting the algae-blocking net.

[0031] Furthermore, the body outside the water body also includes an air compressor and a vacuum pump. When the gas pressure in the positive pressure gas buffer tank is lower than the first control threshold, the air compressor will automatically start and replenish compressed air into the positive pressure gas buffer tank; when the gas pressure in the negative pressure gas buffer tank is higher than the second control threshold, the vacuum pump will automatically start and extract the gas from the negative pressure gas buffer tank.

[0032] Air compressor 2 and positive pressure gas buffer tank 3 are positive pressure inflation components, providing support for rapid inflation of the inflatable float unit; vacuum pump 4 and negative pressure gas buffer tank 5 are negative pressure deflation components, providing support for rapid deflation of the inflatable float unit.

[0033] Furthermore, each gas transmission pipeline is equipped with a channel gas pressure sensor to monitor the gas pressure inside each gas transmission pipeline and the corresponding inflatable float unit; the upper end of the inflatable float unit is equipped with a safety pressure relief valve to automatically release pressure and gas when the pressure inside the inflatable float unit is too high.

[0034] Gas pressure sensor 9 in channel one and gas pressure sensor 11 in channel two monitor the gas pressure values ​​inside the gas paths of channel one and channel two and the inflatable float unit, respectively; safety relief valve 22 and safety relief valve 26 are safety relief valves that can automatically release pressure and air when the internal pressure of inflatable float unit 20 and inflatable float unit 24 is too high, respectively.

[0035] Furthermore, the outer part of the water body also includes interconnected anchor rods and traction steel wire ropes, as well as a tension sensor fixed to the traction steel wire ropes; the traction steel wire ropes are connected and bound to the algae-blocking net, the anchor rods are inserted into the riverbank for fixation, and the tension sensor 18 is used to monitor the tension value on the traction steel wire ropes to prevent excessive tension from damaging the algae-blocking nets.

[0036] The fixed anchor bolts and traction steel wire ropes 17 are the fixing components for the algae-blocking net, which fix the algae-blocking net to both sides of the riverbank.

[0037] Furthermore, the control unit, positive pressure gas buffer tank, negative pressure gas buffer tank, air compressor, and vacuum pump are all located in the riverbank monitoring room. Cameras are installed both inside and outside the monitoring room. The camera inside the monitoring room is used to monitor the indoor equipment, while the camera outside the monitoring room is used to monitor the water surface conditions and the working status of the water body. An audible and visual alarm is installed outside the monitoring room for safety warnings before each inflation or deflation.

[0038] Indoor camera 12 is used to monitor the indoor conditions of the equipment room; outdoor camera 13 is used to view the shape of the algae-blocking net in real time; audible and visual alarm 14 is used for safety warnings when the state of the algae-blocking net changes.

[0039] Furthermore, the sinking unit includes a concrete block and a traction rope, the traction rope connecting the lower end of the algae-blocking impermeable curtain to the concrete block; the wireless communication unit is a 4G or 5G wireless communication network.

[0040] A 4G or 5G wireless communication network 15 connects to the control cabinet 1, enabling the control cabinet 1 to upload local data and status to the remote cloud service platform, while also accepting remote commands and responding locally.

[0041] Furthermore, the external part of the water body also includes a remote cloud service platform, which is used to receive data uploaded by the control unit and establish other databases. The other databases collect water flow velocity, chlorophyll concentration and meteorological information. The cloud service platform also calculates and stores all the received data through a computational model.

[0042] Figure 4 This is a system control structure diagram of an airlift algae-blocking net according to this application, as shown below. Figure 4 As shown, except Figure 1 In addition to the locally deployed equipment components shown in option 2, there is also a remote cloud service platform. Locally monitored real-time data includes the positive pressure buffer tank pressure value, the negative pressure buffer tank pressure value, indoor and outdoor video surveillance footage, the tension value of the traction steel wire rope, the number of inflatable float units, and the pressure and liquid level depth values ​​of each inflatable float unit. This data is transmitted to control cabinet 1 via communication cables. The industrial control computer in control cabinet 1 is equipped with preset control programs, which can control the locally deployed electrical components to execute inflation and buoyancy interception commands, deflation and sinking release commands, and feedback adjustment commands. Simultaneously, control cabinet 1 can upload real-time collected sensor data or status information to the remote cloud service platform via a 4G or 5G wireless communication network 15.

[0043] like Figure 4 As shown, in addition to accepting locally uploaded data, the cloud service platform also establishes other databases, which can obtain information such as river flow velocity, chlorophyll concentration, and meteorological information. All received data will be stored and calculated in the database and computing model for historical data backtracking, future algae and water condition early warning, and automated control.

[0044] Furthermore, the remote cloud service platform includes a web access function module and a visualization display module. The visualization display module displays the received data and prediction results through a visual interface. The web access function module is used to notify relevant staff of abnormal indicators via SMS or to issue remote control commands to the control unit through preset logic to adjust the status of the algae blocking net.

[0045] The cloud service platform has web access capabilities and displays the received data and prediction results through a visual interface. If relevant indicators exceed the set threshold, a notification can be sent to relevant staff via SMS. If necessary, relevant staff can send remote control commands to control cabinet 1 through the cloud service platform according to the preset logic to adjust the status of the algae blocking net.

[0046] The inflation and deflation process of the algae-blocking net is as follows (e.g. Figure 1 , 2 (as shown in Figure 4) Inflatable buoy interception process: Applicable when interception is required in open waterways. Control cabinet 1 activates the audible and visual alarm 14 for a 5-minute pre-start safety warning. After the countdown ends, control cabinet 1 controls the three-way solenoid valve 6 to switch to the inflation path and opens the gas solenoid valve 8 of channel one and the gas solenoid valve 10 of channel two. Compressed air in the positive pressure gas buffer tank 3 enters the inflatable float unit 1 20 and the inflatable float unit 2 24 through the gas transmission pipeline 16, the inflation / deflation port 19 of float unit 1 and the inflation / deflation port 23 of float unit 2, respectively. Control cabinet 1 will also collect the air pressure values ​​of the gas pressure sensor 9 of channel one and the gas pressure sensor 11 of channel two, the traction steel wire rope tension value of the tension sensor 18, and the depth values ​​of the inflatable float unit measured by the depth sensor 21 and the depth sensor 25. The relevant data changes will be displayed in real time on the industrial control computer screen of local control cabinet 1 and the visualization interface of the remote cloud service platform so that staff can understand the relevant dynamics. When the air pressure values ​​inside the inflatable float unit indicated by gas pressure sensor 9 in channel one and gas pressure sensor 11 in channel two reach the set pressure threshold, gas solenoid valve 8 in channel one and gas solenoid valve 10 in channel two are closed. Compressed air in the positive pressure gas buffer tank 3 stops being input into inflatable float unit 20 and inflatable float unit 24, the inflation process ends, and the audible and visual alarm 14 continues to work for 5 minutes for a delayed safety warning. After the countdown ends, it shuts off, and the inflation interception program ends. The local industrial control computer interface and the cloud service platform interface will display a "Inflation interception program completed" message.

[0047] After the inflation interception process is completed, the first inflatable floating unit 20 and the second inflatable floating unit 24 will float on the water surface. The algae-blocking impermeable curtain 27, which is suspended and fixed below, will also extend vertically downward in the upper layer of the water body, isolating the upper layer of the natural water body 28. The high-concentration algae-containing water and the low-concentration algae-containing water on both sides of the algae-blocking impermeable curtain 27 in the upper layer of the water body will not be able to exchange freely, but the water with a lower algae concentration in the middle and lower layers of the water body can be exchanged normally.

[0048] During the inflation process, when the air pressure in the positive pressure gas buffer tank 3 is lower than the first control threshold, the air compressor 2 will automatically start and replenish compressed air into the positive pressure gas buffer tank 3. If the air pressure in the inflation float unit 1 20 and the inflation float unit 24 is too high, the safety relief valve 1 22 and the safety relief valve 26 will automatically release the pressure to prevent the inflation float unit from being damaged due to excessive internal pressure.

[0049] Degassing and sinking opening process: Applicable when the intercepted river channel needs to be opened, the control cabinet 1 activates the audible and visual alarm 14 to provide a 5-minute safety warning before start-up. After the countdown ends, the control cabinet 1 controls the three-way solenoid valve 6 to switch to the degassing path and opens the gas solenoid valve 8 of channel one and the gas solenoid valve 10 of channel two. Because the internal air pressure of the negative pressure gas buffer tank 5 is low, the gas in the inflatable float unit 1 20 and the inflatable float unit 2 24 flows into the negative pressure gas buffer tank 5 through the inflatable float unit 1 inflation / deflation port 19 and the inflatable float unit 2 inflation / deflation port 23 and the gas transmission pipeline 16. The control cabinet 1 will also collect the internal air pressure value of the inflatable float unit measured by the gas pressure sensor 9 of channel one and the gas pressure sensor 11 of channel two, the traction steel wire rope tension value of the tension sensor 18, and the depth value measured by the depth sensor 1 21 and the depth sensor 2 25 in real time. The relevant data changes will be displayed in real time on the industrial control computer screen of the local control cabinet 1 and the visualization interface of the cloud service platform so that the staff can understand the relevant dynamics. When the gas pressure values ​​inside the inflatable float unit indicated by gas pressure sensor 9 in channel one and gas pressure sensor 11 in channel two reach the set pressure threshold, gas solenoid valve 8 in channel one and gas solenoid valve 10 in channel two are closed. Gas from inflatable float unit 1 (20) and inflatable float unit 2 (24) stops flowing into the negative pressure gas buffer tank 5, the venting process ends, and the audible and visual alarm 14 continues to operate for 5 minutes as a delayed safety warning. After the countdown ends, it shuts off, and the venting and opening procedure ends. The local industrial control computer interface and the cloud service platform interface will display a "Venting and opening procedure completed" message.

[0050] After the degassing and opening procedure is completed, the inflatable floating unit 1 20 and the inflatable floating unit 24 will sink into the water. The algae-blocking impermeable curtain 27, which is suspended and fixed below, will also extend vertically downward in the middle and lower layers of the water body. The surface water of the natural water body will be freely exchanged, which can cope with the passage of ships and the impact of floods. It can even wash down the algae that have escaped and spread to the upstream of the algae-blocking net from downstream.

[0051] During the venting process, when the gas pressure in the negative pressure gas buffer tank 5 is higher than the second control threshold, the vacuum pump 4 will automatically start and extract the gas from the negative pressure gas buffer tank 5.

[0052] Segmented inflation / deflation commands: Applicable to multi-segment airlift algae-blocking nets that require segmented control to change the state of the algae-blocking net. The key is to control the air path of the three-way solenoid valve 6 and the on / off state of the solenoid valves on the right side of the multi-way valve 7 in each unit's air path. Figure 1 and 2 The gas solenoid valve 8 in channel one and the gas solenoid valve 10 in channel two are executed in the same way as the above process.

[0053] Algae-blocking net situational awareness and control logic: Automatic feedback adjustment and emergency control: Control cabinet 1 has a built-in industrial computer and logic control program, which can perform simple logic control based on locally collected sensor data.

[0054] The gas pressure value of the positive pressure gas buffer tank 3 is read in real time. If it exceeds the high threshold, the air compressor 2 is automatically powered off. If it is below the low threshold and the pressure does not increase for more than 15 minutes, the air compressor 2 is automatically powered off, and the control cabinet 1 reports an alarm for abnormal operation of the air compressor 2. The gas pressure value of the negative pressure gas buffer tank 5 is read in real time. If the pressure exceeds the high threshold and does not drop for more than 15 minutes, the vacuum pump 4 is automatically powered off, and the control cabinet 1 reports an alarm for abnormal operation of the vacuum pump 4. The tension value of the steel wire rope of the tension sensor 18 is read in real time. If it exceeds the high threshold, the control cabinet 1 automatically executes the air release and opening process of the algae blocking net and reports an alarm that the traction tension value of the algae blocking net exceeds the standard. The system reads the internal air pressure values ​​of the inflatable float unit from gas pressure sensor 9 in channel one and gas pressure sensor 11 in channel two in real time. ① If the pressure exceeds the high threshold, gas solenoid valve 8 in channel one and gas solenoid valve 10 in channel two are closed, and safety pressure relief valve 22 and safety pressure relief valve 26 automatically release air and relieve pressure. When the pressure drops to the safety threshold of the pressure relief valve, automatic air release stops, and control cabinet 1 reports an alarm indicating that the internal air pressure of the inflatable float unit exceeds the standard. ② In the inflation interception state, the internal pressure of the inflatable float unit can also be dynamically maintained. When the inflatable float unit is in an inflated state for a long time, and the internal air pressure will slowly leak, it will be inflated in time. ③ In the inflation interception state, if the pressure of the inflatable float unit is lower than the set threshold for a long time and does not increase for more than 15 minutes, control cabinet 1 reports an alarm indicating that the inflatable float unit is inflated abnormally.

[0055] Local control: Control cabinet 1 is equipped with a touch screen, physical knobs, and push-button switches, allowing staff to manually implement the air-filling and air-release processes for the algae-blocking net. In manual operation mode, except for the forced automatic control in emergency mode, the touch screen will display the valve dynamics and changes in various monitoring data in real time, allowing staff to make adjustments as needed.

[0056] Remote control: Staff can monitor the working status and data of the algae-blocking net in real time through a visual web interface on a remote cloud service platform, and issue control commands to control cabinet 1 to achieve remote control of the algae-blocking net. In addition to the monitoring data reported by control cabinet 1, the cloud service platform can provide analysis and early warning services including algae prediction and flood prediction, providing a basis for decision-making on adjusting the status of the algae-blocking net.

[0057] Algae prediction: By using the logistic model of algal bloom growth in the database and computational model, combined with real-time chlorophyll monitoring data, future irradiance data from weather forecasts, and temperature data, the chlorophyll content for the next 3 days and 7 days is simulated, and the predicted chlorophyll value is output. This provides early warning of potential algal blooms and reminds staff to adjust the algae blocking net to the air-filled floating interception mode in advance.

[0058] Flow velocity trend: By using the optimized flood prediction GAST model built into the database and computational model, combined with rainfall data from weather forecasts, and correlated with river width, algae-blocking net depth coefficient, etc., early warnings of potential floods can be issued. Staff are reminded to adjust the algae-blocking net to the vented, submerged, open state in advance.

[0059] It should be noted that the specific values ​​set above do not constitute a limitation on the present invention, and the data involved in this application can be adjusted according to the actual situation.

[0060] This application designs a floating algae-blocking net, whose algae-blocking depth can be adjusted as needed, and can be used in multiple flexible combinations. It can also be controlled in segments as an independent unit to adapt to different application needs. The state of the algae-blocking net can also be changed through remote network and monitoring, without the need for personnel to go to the site. Multiple sets of equipment can be operated at the same time, which is both efficient and saves time and effort.

[0061] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An airlift algae-blocking net, characterized in that, The system comprises an inner water section and an outer water section. The outer water section includes a control unit, a wireless communication unit, a positive pressure gas buffer tank, a negative pressure gas buffer tank, a three-way solenoid valve, and a one-turn multi-way valve. The inner water section includes multiple segmented structures. Each segmented structure includes a gas transmission pipeline, an inflatable floating body unit, an inflation / deflation port for the inflatable floating body unit, and a depth sensor fixed to the lower side of the inflatable floating body unit. The inflatable floating body unit is vertically connected to an algae-blocking impermeable curtain, and the lower end of the algae-blocking impermeable curtain is connected to a sinking unit. One end of each gas transmission pipeline is connected to the one-turn multi-way valve, and the other end is connected to the inflation / deflation port of the inflatable floating body unit. The gas inlet is connected; one end of the three-way solenoid valve is connected to the one-turn multi-way valve, and the other two ends are connected to the positive pressure gas buffer tank and the negative pressure gas buffer tank respectively; a channel gas solenoid valve is provided at the air inlet of each gas transmission pipeline; the number of the segmented structures is determined according to the actual interception length; the control unit performs segmented control on the multiple segmented structures; the sinking unit includes a concrete sink block and a traction rope, and the traction rope connects the lower end of the algae-blocking impermeable curtain to the concrete sink block; the wireless communication unit is a 4G or 5G wireless communication network; the algae-blocking impermeable curtain is made of PVC material, and a partition is provided at the bottom, with a heavy iron chain installed inside the partition.

2. The airlift algae-blocking net as described in claim 1, characterized in that, The outer part of the water body also includes an air compressor and a vacuum pump. When the gas pressure in the positive pressure gas buffer tank is lower than the first control threshold, the air compressor will automatically start and replenish compressed air into the positive pressure gas buffer tank. When the gas pressure in the negative pressure gas buffer tank is higher than the second control threshold, the vacuum pump will automatically start and extract the gas from the negative pressure gas buffer tank.

3. The airlift algae-blocking net as described in claim 2, characterized in that, Each gas transmission pipeline is also equipped with a channel gas pressure sensor to monitor the gas pressure inside each gas transmission pipeline and the corresponding inflatable float unit; the upper end of the inflatable float unit is equipped with a safety pressure relief valve to automatically release pressure and gas when the pressure inside the inflatable float unit is too high.

4. The airlift algae-blocking net as described in claim 3, characterized in that, The outer part of the water body also includes interconnected anchor rods and traction steel wire ropes, as well as a tension sensor fixed to the traction steel wire ropes; the traction steel wire ropes are connected and bound to the algae-blocking net, the anchor rods are inserted into the riverbank for fixation, and the tension sensor is used to monitor the tension value on the traction steel wire ropes to prevent excessive tension from damaging the algae-blocking nets.

5. The airlift algae-blocking net as described in claim 4, characterized in that, The control unit, positive pressure gas buffer tank, negative pressure gas buffer tank, air compressor, and vacuum pump are all located in the riverbank monitoring room. Cameras are installed both inside and outside the monitoring room. The camera inside the monitoring room is used to monitor the indoor equipment, while the camera outside the monitoring room is used to monitor the water surface conditions and the working status of the water body. An audible and visual alarm is installed outside the monitoring room to provide safety warnings before each inflation or deflation.

6. The airlift algae-blocking net as described in claim 5, characterized in that, The external part of the water body also includes a cloud service platform, which is used to receive data uploaded by the control unit and to establish a database for collecting water flow velocity, chlorophyll concentration and meteorological information; the cloud service platform also calculates and stores all the received data through a computational model.

7. The airlift algae-blocking net as described in claim 6, characterized in that, The remote cloud service platform includes a web access function module and a visualization display module. The visualization display module displays the received data and prediction results through a visual interface. The web access function module is used to notify relevant staff of abnormal indicators via SMS or to issue remote control commands to the control unit through preset logic to adjust the status of the algae blocking net.

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