Novel precipitation equipment control method, multifunctional system and intelligent terminal

Abstract

The invention relates to a novel dewatering equipment control method, a multifunctional system and an intelligent terminal, and relates to the technical field of foundation pit dewatering, and the novel dewatering equipment control method comprises the steps that a dewatering preparation completion trigger signal of a preset dewatering well is collected; the preset precipitation equipment responds to the precipitation preparation completion trigger signal to form a stable closed negative pressure space in a preset vacuum chamber according to preset target parameters; collecting the in-well water storage depth of the drainage well and the indoor vacuum degree of the vacuum chamber; whether the water storage depth in the well meets the requirement of a preset rainfall depth threshold value or not is judged; if not, the precipitation equipment is controlled to assist the drainage well in water storage; and if yes, controlling precipitation equipment to suck accumulated water in the well according to the indoor vacuum degree. The method has the effects of improving the efficiency, timeliness, vacuum stability and sustainability of underground water reduction of the foundation pit; the equipment is low-carbon, energy-saving, green, environment-friendly, safe, civilized, intelligent, cost-reducing and efficiency-increasing.

Description

Technical Field

[0001] This application relates to the technical field of foundation pit dewatering, and in particular to a novel dewatering equipment control method, multifunctional system and intelligent terminal. Background Technology

[0002] In the engineering industry, projects such as construction, water conservancy, civil defense, infrastructure, and municipal works require the excavation of foundation pits to bury structures. If the excavated soil has a large amount of unconfined groundwater or contains confined or slightly confined groundwater, the excavation process can lead to difficulties in soil excavation and transportation, and may result in risks such as foundation pit instability, piping, and settlement around the foundation pit. This can cause safety or quality accidents, delaying construction progress and increasing construction costs. In particular, silty soil is prone to turning into mud under the compaction of excavators and during the rainy season. When transporting soil over long distances, the shaking caused by vehicle bumps can lead to mud leakage, which can then pollute roads and does not meet the requirements of civilized construction and environmental protection.

[0003] In related technologies, when excavating a foundation pit for an engineering project, and dewatering is required for the upper unconfined groundwater, groundwater aquifers, or confined or slightly confined water within the pit soil, vacuum dewatering deep wells typically utilize traditional single Venturi tube and single jet vacuum pumps. This method performs single-stage dewatering of the foundation pit soil and groundwater aquifers, creating a vacuum negative pressure within the well to accelerate groundwater seepage. The specific working principle is as follows: one end of the Venturi tube is connected to a water storage tank, and the other end is connected to a pump. One end of the air extraction pipe and the other end of the water extraction pipe are connected to the middle of the Venturi tube. The pump is connected to the well. When pumping water, the operator opens the valve of the air extraction pipe and closes the valve of the water extraction pipe. Water is then drawn from the storage tank through the venturi tube. The water flows through the venturi tube and the return pipe, and finally returns to the storage tank. When the water flows through the venturi tube, the venturi tube generates negative pressure, causing air or water in the pit well to flow into the air extraction pipe. After observing the vacuum through the vacuum pressure gauge and confirming that the pressure is stable, the air extraction pipe valve is closed and the water extraction pipe valve is opened, allowing the pump to continue pumping water. The venturi tube continues to generate negative pressure, thus continuously pumping water from the well into the storage tank through the water extraction pipe.

[0004] Regarding the aforementioned technologies, single Venturi tube and single jet vacuum pumps generate low vacuum negative pressure and have low pumping head. Traditional vacuum pumps typically operate at full power. As groundwater levels decrease and there is insufficient groundwater replenishment for extended periods, the raw water in the tank continuously circulates and rubs against the tank, causing the water to heat up and boil. This boiling process creates air bubbles, affecting the vacuum pump's vacuum level. The reduced vacuum level results in insufficient pumping power, leading to a situation where water is present in the well but cannot be pumped out, resulting in poor precipitation stability. This is particularly problematic for silty soils with low permeability and poor water permeability. Traditional vacuum equipment is unlikely to alter the water-rich but impermeable nature of such soils, indicating room for improvement. Summary of the Invention

[0005] To improve the stability of foundation pit dewatering, this application provides a novel dewatering equipment control method, a multi-functional system, and an intelligent terminal.

[0006] In the first aspect, this application provides a novel method for controlling precipitation equipment, employing the following technical solution: A novel method for controlling precipitation equipment includes: The pre-set dewatering well is collected to trigger the completion of the precipitation preparation. The preset precipitation equipment responds to the precipitation preparation completion trigger signal to form a stable negative pressure zone in the preset vacuum chamber with preset target parameters; The water depth inside the drainage well and the vacuum level inside the vacuum chamber were collected. Determine whether the water depth in the well meets the preset threshold for water depth. If not, control the dewatering equipment to assist in draining the well and storing water; If the conditions are met, the water-absorbing equipment will be controlled according to the indoor vacuum level to draw water from the well.

[0007] Optionally, the steps for controlling the dewatering equipment to assist in the storage of water in the drainage well include: The water-raising equipment is raised to the end of the pre-set pumping pipe well according to the pre-set water storage pipe height. The water storage initial rotation speed is controlled to control the dewatering equipment to form a negative pressure zone in the dewatering well to promote water storage in the dewatering well, and the vacuum degree inside the dewatering well is collected in real time. The initial water storage rotation speed is corrected based on the difference between the detected vacuum level in the well and the preset target vacuum level in the well, so as to generate the first water storage rotation speed. The first water storage speed is corrected based on the difference between the vacuum level detected in the well and the vacuum level in the room, so as to generate the actual water storage speed. The negative pressure zone in the drainage well is formed by controlling the actual water storage speed of the dewatering equipment to promote water storage in the drainage well.

[0008] Optionally, the step of correcting the initial water storage rotation speed based on the difference between the detected vacuum level in the well and the preset target vacuum level in the well to generate the first water storage rotation speed includes: Calculate the difference between the detected vacuum level in the well and the target vacuum level in the well to generate the target vacuum level difference; The target vacuum difference is normalized based on the preset standard atmospheric pressure to generate the basic speed correction coefficient; The corresponding vacuum difference correction coefficient is found in the preset vacuum difference correction relationship based on the target vacuum difference value; The basic speed correction factor is adjusted based on the vacuum difference correction factor, and the initial water storage speed is corrected using the adjusted basic speed correction factor to generate the first water storage speed.

[0009] Optionally, the step of correcting the first water storage speed based on the difference between the vacuum level detected in the well and the vacuum level in the room to generate the actual water storage speed includes: Calculate the difference between the indoor vacuum level and the well-detected vacuum level to generate a negative pressure conduction differential. Determine whether the negative pressure conduction differential meets the preset conduction differential threshold requirement; If it does not meet the requirements, the first water storage speed will be defined as the actual water storage speed. If the conditions are met, the negative pressure transmission pressure difference is normalized according to the preset standard atmospheric pressure to generate the speed adjustment coefficient. The rotation speed adjustment coefficient is adjusted according to the preset air extraction suppression coefficient, and the first water storage rotation speed is corrected with the adjusted rotation speed adjustment coefficient to generate the actual water storage rotation speed.

[0010] Optionally, the steps for controlling the extraction of accumulated water from the well by the precipitation equipment based on the indoor vacuum level include: The difference between the indoor vacuum level and the preset indoor target vacuum level is normalized based on the preset standard atmospheric pressure to generate a vacuum deviation coefficient. Calculate the product of the vacuum deviation coefficient and the preset vacuum deviation ratio coefficient to generate the vacuum speed correction coefficient; The preset initial water suction speed is corrected according to the vacuum speed correction coefficient to generate the first water suction speed. The actual vacuum level inside the well was collected. The first pumping speed is corrected based on the difference between the measured vacuum level inside the well and the vacuum level in the room, so as to generate the actual pumping speed. The water extraction equipment draws water from the well based on the actual pumping speed.

[0011] Optionally, the step of correcting the first pumping speed based on the difference between the measured vacuum level in the well and the vacuum level in the laboratory to generate the actual pumping speed includes: The difference between the measured vacuum level inside the well and the vacuum level in the laboratory is normalized based on standard atmospheric pressure to generate a vacuum conduction speed correction coefficient. Calculate the product of the vacuum conduction speed correction coefficient and the preset conduction loss compensation coefficient to generate the conduction loss speed correction coefficient; The first water suction speed is corrected according to the transmission loss speed correction coefficient to generate the actual water suction speed.

[0012] Optionally, it also includes a method for adjusting the vacuum level of the vacuum chamber, the specific steps of which include: Real-time monitoring of water temperature inside a pre-set water storage tank; Determine whether the water temperature inside the tank exceeds the preset threshold that affects the vacuum level. If not, continue to collect the water temperature inside the water tank in real time for cyclical judgment; If so, the preset cooling module will be controlled to cool the water in the water tank based on the difference between the detected water temperature in the water tank and the preset vacuum level, which has no effect on the temperature.

[0013] Optionally, the step of controlling the preset cooling module to cool the water in the water tank based on the difference between the detected water temperature and the preset vacuum level (which does not affect the temperature) includes: Calculate the difference between the detected water temperature and the temperature unaffected by vacuum in the water tank to generate the temperature regulation value in the water tank; Collect the current water storage capacity of the water tank; Calculate the product of the current water storage capacity, the preset constant pressure specific heat capacity, the preset water density, and the preset heat dissipation coefficient to generate heat per unit temperature. The product of the heat generated per unit temperature and the temperature regulated in the water tank is calculated and divided by the preset target cooling time to generate the cooling power. The cooling module cools the water in the storage tank based on the cooling power control.

[0014] Secondly, this application provides a novel multi-functional control system for precipitation equipment, which adopts the following technical solution: A novel multi-functional control system for precipitation equipment includes: The data acquisition module is used to collect the trigger signal for the completion of precipitation preparation, the water depth in the well, and the indoor vacuum level; A memory for storing a program for a novel precipitation equipment control method as described in any of the preceding claims; The processor and the program in the memory can be loaded and executed by the processor to implement a novel precipitation equipment control method as described in any of the above.

[0015] Thirdly, this application provides a smart terminal, which adopts the following technical solution: A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any of the preceding claims for the control method of a novel precipitation device.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. When the trigger signal for the completion of dewatering preparation in the drainage well is detected, the dewatering equipment is controlled to form a stable negative pressure zone in the vacuum chamber. When the water storage depth in the well meets the requirements of the dewatering depth threshold, the dewatering equipment is controlled to draw water from the well based on the vacuum degree in the chamber. This avoids the dewatering equipment from running at full power all the time, which could result in insufficient air or water pumping, thereby improving the stability of the foundation pit dewatering. 2. The initial water storage speed is corrected by the difference between the vacuum degree detected in the well and the target vacuum degree in the well to obtain the first water storage speed. Then, the first water storage speed is corrected by the difference between the vacuum degree detected in the well and the vacuum degree in the room to obtain the actual water storage speed. This ensures both the high vacuum degree in the drainage well, which promotes the rapid storage of groundwater in the drainage well, and good negative pressure conduction between the drainage well and the dewatering equipment. 3. By determining when the detected water temperature in the water tank exceeds the temperature threshold affecting the vacuum level, the cooling power is obtained by dividing the product of the adjusted temperature in the water tank and the heat per unit temperature by the target cooling time. This allows the cooling module to be controlled to cool the water in the storage tank using the cooling power, thus preventing excessively high water temperature from causing cavitation and resulting in unstable vacuum levels in the vacuum chamber. Attached Figure Description

[0017] Figure 1 This is a flowchart of a novel precipitation equipment control method in an embodiment of this application.

[0018] Figure 2 This is a flowchart of the steps for controlling the auxiliary drainage well storage of the precipitation equipment in the embodiments of this application.

[0019] Figure 3 This is a flowchart of the steps in this application embodiment to correct the initial water storage rotation speed based on the difference between the detected vacuum degree in the well and the preset target vacuum degree in the well, so as to generate the first water storage rotation speed.

[0020] Figure 4 This is a flowchart of the steps in this application embodiment to correct the first water storage speed based on the difference between the vacuum degree detected in the well and the vacuum degree in the room, so as to generate the actual water storage speed.

[0021] Figure 5 This is a flowchart illustrating the steps of controlling the water-collecting equipment to draw water from the well based on the indoor vacuum level in this embodiment of the application.

[0022] Figure 6 This is a flowchart of the steps in this application embodiment to correct the first water suction speed based on the difference between the measured vacuum degree in the well and the indoor vacuum degree in order to generate the actual water suction speed.

[0023] Figure 7 This is a flowchart of the vacuum degree adjustment method for the vacuum chamber in the embodiments of this application.

[0024] Figure 8 This is a flowchart of the steps in this application embodiment to control a preset cooling module to cool the water in the water tank based on the difference between the detected water temperature in the water tank and the preset vacuum degree, which has no effect on the temperature. Detailed Implementation

[0025] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figures 1 to 8 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0026] Reference Figure 1 This application discloses a novel method for controlling precipitation equipment, comprising the following steps: Step S100: Collect the pre-set dewatering well's precipitation preparation completion trigger signal.

[0027] Among them, dewatering wells refer to deep (pipe) wells used for soil phreatic water and groundwater. Dewatering wells can quickly collect groundwater in the foundation pit, reduce the soil moisture content, and facilitate earthwork excavation and artificial base operations. They ensure that the water level in the dewatering well meets the drawdown requirements. Dewatering wells can be equipped with water level sensors and vacuum pressure gauges to monitor the water level and vacuum in the dewatering well in real time, which facilitates the subsequent adjustment of the dewatering parameters of the dewatering equipment, so as to achieve dewatering on demand and reduce the impact of dewatering on the surrounding environment.

[0028] The precipitation preparation completion trigger signal is the signal that the precipitation preparation work in the dewatering well is completed. After the dewatering well is constructed, a sealing cover is used to seal the well, thereby ensuring the stability of the negative pressure environment inside the well during subsequent pumping and water storage. Then, a pipe is inserted into the dewatering well through the sealing cover to reduce pressure loss along the flow path. The pipe entering the dewatering well is kept 50 to 100 centimeters away from the bottom of the well to prevent the pipe from touching the bottom and sucking in mud and sand, which would affect water absorption. The other end of the pipe passes through the sealing cover and connects to the dewatering equipment. After completing the above preparations, the operator inputs the precipitation preparation completion trigger signal into the dewatering equipment to provide data support for the subsequent operation of the dewatering equipment.

[0029] Step S101: The preset precipitation equipment responds to the precipitation preparation completion trigger signal and forms a stable negative pressure zone in the preset vacuum chamber with preset target parameters.

[0030] When the precipitation equipment receives the precipitation preparation completion trigger signal, it responds to the precipitation preparation completion trigger signal and forms a stable negative pressure zone in the vacuum chamber with the target parameters, providing a negative pressure basis for subsequent precipitation equipment to dredge the well.

[0031] Dewatering equipment refers to devices used to extract groundwater from drainage wells. It includes a venturi tube body, vacuum pump assembly, vacuum chamber assembly, pumping pipeline, water tank assembly, various treatment terminal systems, cooling components, and a display assembly. The venturi tube body, as the core vacuum generating component, is fixed to the ground and integrates three key structures: a nozzle, a mixing tube, and a diffuser. The nozzle inlet connects to the outlet of the ground centrifugal pump, while the diffuser outlet connects to the ground water tank via a pumping pipeline, forming the basic pathway for negative pressure generation and water extraction. The core function of the vacuum chamber assembly is to stabilize and transmit negative pressure. Upon reaching the drainage well, one end of the vacuum chamber assembly is sealed to the negative pressure zone of the venturi tube, while the other end extends to the wellhead, where it is sealed and fixed with the wellhead cap and connected to the pipeline inside the well. The main pipe and branch pipes are connected in series. Various valves (mechanical and electric check valves, mechanical and electric anti-backflow valves, and corrosion-resistant valves are available). The drainage system can be equipped with flow meters or flow indicators to monitor drainage volume. Vacuum pressure gauges can be configured for the vacuum chamber, vacuum pipelines, system collectors, and wellheads to monitor vacuum levels in real time. One end of the pumping pipeline is inserted into the drainage well, with the bottom 50 to 100 cm from the bottom to prevent sand suction. The other end passes through the wellhead sealing device and connects to the vacuum chamber. Flow regulating valves can be optionally installed on the pipeline to flexibly control the pumping volume of a single well. The core function of the water tank assembly is water storage. It is fixed to the end of the venturi tube, and a temperature sensor is installed on the top of the tank to monitor the water temperature. To prevent overflow due to excessive water level when pumping water, the equipment is equipped with an overflow outlet or uses a water level sensing system to automatically control the drainage pump. An independent drainage (sewage) pump can be installed at the tank port or bottom to transport the pumped groundwater (or water containing sediment) to a sedimentation tank. After sedimentation, the water is discharged into the external drainage system, meeting the needs of different drainage scenarios. The treatment terminal handles equipment operation and control functions. Its core components include a circulating pump controller, a human-machine interface, and a communication module. These three components work together to achieve equipment start / stop, parameter adjustment, and data transmission, providing support for human-machine operation and remote monitoring. To facilitate real-time monitoring of single-well and multi-well precipitation, water level displays can be used in the precipitation wells and observation wells. The instruments can be fixed at the wellhead of the drainage well to provide a direct view of the current well depth and water level. If a fully intelligent equipment and display system are used, a series of necessary data, such as flow rate, vacuum degree, temperature, and water level, can be sensed by intelligent sensors and displayed on the screen of the intelligent display component.

[0032] The equipment in this embodiment uses a low-power motor and can be a single-unit or dual-unit configuration. It can employ low-energy-consumption adjustable-speed or non-adjustable dual-motor and single-motor configurations. Regardless of whether it's a single-unit or dual-motor configuration, all units must use dual jet injectors and dual spray pipes to enhance the unit's head and increase its negative pressure. Automatic control and intelligent systems maintain a stable vacuum, ensuring coordinated system operation and improving the efficiency and effectiveness of the dewatering equipment. The core objective of the high-efficiency vacuum jet unit is to maintain a stable vacuum while ensuring absolute vacuum and safety, thereby enhancing the vacuum dewatering effect and ultimately guaranteeing the safety and smooth progress of the entire project. It also achieves low-carbon and energy-saving performance from an environmental perspective. Technically, in soil layers with low permeability, this equipment can create a vacuum negative pressure in the sealed state of the dewatering well, accelerating the seepage flow of water within the soil and achieving effective dewatering. Its dual jet and dual Venturi tubes provide more powerful suction compared to traditional single jet and Venturi tubes. In soil layers with high permeability, its suction principle can replace water pumps, reducing the need for dense, crisscrossing pipelines on-site, ensuring the safety of on-site dewatering, and greatly improving the image of a civilized construction site. It solves the problem of temporarily relocating pipelines during earthwork excavation while ensuring timely restoration of dewatering, offering convenience. It saves costs for construction units and general contractors, achieving cost reduction and efficiency improvement. The number of suction wells can be adjusted according to different soil moisture contents and dewatering depths, based on experimental and practical data: .

[0033] The dual motors can be used alternately as needed, compensating for the downtime caused by the failure of a single motor for repair, and ensuring continuous precipitation. Traditional small vacuum pumps consume an average of 2.5KW per well, while the precipitation equipment in this embodiment consumes an average of 0.5KW-1KW per well, saving over 30%-50% in electricity. Due to the strong vacuum and long suction range, the equipment can be placed in a fixed position around the foundation pit, eliminating the need for numerous tertiary electrical boxes and wires in the middle of the pit. This reduces the number of secondary cables and electrical boxes required for the general contractor, reducing secondary cables and cable materials by over 60%. It also reduces the number of mechanical equipment points and the space occupied by the equipment, minimizing safety hazards from excessive electromechanical use, ensuring electrical safety, improving site cleanliness, and enhancing the image of civilized construction. The equipment has standardized components and a control box to prevent disruption of normal precipitation operation due to motor failure. Furthermore, the equipment operates quietly, providing effective noise protection for projects in noisy urban areas or near residential buildings. This makes precipitation more efficient, safer, low-carbon, energy-saving, and environmentally friendly. The core operating sequence for the normal startup and effective operation of precipitation equipment includes: Startup sequence: 1. Start the centrifugal pump first: First, start the centrifugal pump (or centrifugal pump set) that provides high-pressure water to the jet pump. The control system needs to confirm that the centrifugal pump is running normally and has established a stable high-pressure water source (usually requiring pressure >0.6MPa). 2. Start the jet pump later: After the high-pressure water pressure reaches the set value, delay for a few seconds (ensuring the pipeline is full of water and the pressure is stable) before allowing or automatically starting the vacuum electric valve of the vacuum jet pump. Stopping sequence: 1. Stop the jet pump first: First, close the valve of the vacuum jet pump to cut off the vacuum source. 2. Stop the centrifugal pump later: After a certain period of time (e.g., 30-60 seconds), stop the centrifugal pump. This delay is to use high-pressure water to flush out the mud and sand in the jet pump and pipeline to prevent blockage during the next startup. Incorrect sequence (e.g., starting the jet pump before the centrifugal pump) will cause atmospheric air to be sucked into the pipeline, damaging the vacuum system, or even sucking mud and sand into the pump body, causing blockage. Restoring the vacuum will be very time-consuming and labor-intensive. Vacuum Maintenance and Automatic Restart: Vacuum level is a core monitoring parameter during system operation. If the vacuum level drops to the set lower limit due to some reason (such as a slight pipeline leak), the control system will automatically alarm and determine whether a brief forced vacuuming operation is needed to restore the vacuum level without stopping the centrifugal pump. For multi-pump systems, if one pump fails or the vacuum level is insufficient, the control system will automatically switch to the standby pump group.

[0034] The power and electrical control of the dewatering equipment includes: 1. Motor starting: A self-developed semiconductor starter controller is used to control the starting of the centrifugal pump motor, which can effectively limit the starting current, reduce the impact on the power grid, and avoid damage to the pump and pipeline components due to excessive starting torque; the control system also has direct start control (mostly for small power motors), which can be divided into star-delta start control, soft start control, and frequency conversion control (requires PLC). 2. Adjustable speed control (more efficient function): Equipping the centrifugal pump with an adjustable speed controller is the best solution for energy saving and refined control. 3. Energy saving: The centrifugal pump speed is automatically adjusted according to the actual required vacuum degree and flow rate, avoiding energy waste caused by valve throttling, resulting in significant power saving effect. 4. Constant pressure control: The pressure of the high-pressure water pipeline is used as a feedback signal, and the centrifugal pump speed is controlled by the controller through PID regulation to maintain a constant high-pressure water pressure, thereby ensuring the stable working efficiency of the jet pump. 5. Automatic switching between dual power supplies (ATS): To ensure the continuity of dewatering operations, prevent dewatering interruption caused by unexpected power outages, and avoid the soil in the excavation pit from exhibiting a fluid plastic state or sudden heaving at the bottom of the pit. The power supply system should be equipped with dual power sources (mains power + diesel generator) and an automatic switching device.

[0035] Applications: This high-efficiency vacuum equipment uses a water pump motor as its power source. Water jets convert velocity energy into negative pressure energy, creating a vacuum at the pump inlet. It can pump dry air, condensable gases, water, and gases containing dust. Compared to general mechanical vacuum pumps, it is resistant to oil contamination, water vapor, dust, and corrosion. It is an ideal vacuum suction and extraction device for industries such as engineering, textiles, food, chemicals, pharmaceuticals, schools, and laboratories, used for pit dewatering, dehydration, sanitary drainage, dust removal, reactions, distillation, and vacuum degassing.

[0036] Equipment Features: 1. The high-efficiency vacuum jet unit has no moving mechanical parts, featuring simple structure, reliable operation, low maintenance, long service life, and high protection level. 2. The high-efficiency vacuum jet unit can be used in single-unit or multi-unit combinations. Multiple units can share a single water tank, and exhaust gas is discharged uniformly. An external or internal condenser lowers the temperature of the circulating water, offering advantages such as stable vacuum, environmental friendliness, a clean working environment, and wide applicability.

[0037] Selection Principles: 1. Understand the composition of the gas being pumped, including whether it contains condensable vapors, particulate dust, or highly corrosive substances. High-efficiency vacuum jet units can be manufactured using different materials. 2. The operating pressure of the high-efficiency vacuum jet unit should meet the ultimate vacuum and operating pressure requirements of the vacuum equipment. 3. At its operating pressure, the high-efficiency vacuum jet unit should be able to remove all the gas generated during the vacuum equipment's process.

[0038] Equipment Selection: The following pump materials and machine configurations are available for high-efficiency vacuum jet units: 1. Optional stainless steel speed-adjustable or non-speed-adjustable motors, stainless steel water tanks, stainless steel branching devices, stainless steel pipe fittings, stainless steel manual valves and other pump components are available. The equipment is an all-stainless steel outdoor open or box-type single or double unit.

[0039] 2. Optional stainless steel speed-adjustable or non-speed-adjustable motors, stainless steel water tanks, stainless steel branchers, stainless steel pipe fittings, stainless steel electric valves and other pump components are available, making it an all-stainless steel outdoor open or box-type single or double unit equipment.

[0040] 3. Optional pump components include cast iron speed-regulating or non-speed-regulating motors, carbon steel water tanks, carbon steel branching devices, carbon steel pipe fittings, and cast steel manual valves, making it a carbon steel outdoor open or box-type single or double unit equipment.

[0041] 4. Optional pump components include cast iron speed-regulating or non-speed-regulating motors, carbon steel water tanks, carbon steel branching devices, carbon steel pipe fittings, and cast steel electric valves, making it a carbon steel outdoor open or box-type single or double unit equipment.

[0042] Advantages of Automatic Control: The automatic control system is safe and reliable, allowing for on-demand start / stop: It automatically starts and stops the vacuum jet unit and the bottom sediment cleaning and sewage pump system based on actual water levels. Manual start / stop of the unit is also available, avoiding "dry pumping" and ineffective operation, saving energy and reducing equipment wear. Centralized Monitoring: It achieves "unmanned operation with manned inspection." All data and control are centralized in the monitoring center, enabling timely detection of problems and reducing on-site manual operation.

[0043] A. Essential control system 1. Dedicated controller for speed-regulating motors. 2. Dedicated intelligent system for speed-regulating water pump motors. 3. Fully intelligent control system. 4. Integrated intelligent control system (must be included).

[0044] B. Optional Control System 1. Star-delta control system. 2. Soft-start control system. 3. Automatic sewage pump system for cleaning sediment, debris, and garbage deposited at the bottom of the pump.

[0045] Composition of an intelligent automatic control system: 1. The perception layer (data acquisition layer) is the "eyes" of the system, responsible for collecting key operating parameters.

[0046] 2. Vacuum sensor: Installed on the main water collection pipe or the vacuum chamber of the ejector, it is used to monitor the system vacuum level. This is the most critical control parameter, directly reflecting the system's sealing performance and pumping capacity.

[0047] 3. In the dewatering well: Use an immersion-type static pressure level gauge to monitor the water level changes in the well in real time.

[0048] 4. Inside the water collection tank: Monitor the water level in the tank to prevent the water pump from running dry or overflowing.

[0049] 5. Pressure sensor: Installed at the outlet of the water pump to monitor the water supply pressure and ensure that the ejector has sufficient working power.

[0050] 6. Current / Voltage Sensor: Monitors the operating current of water pump and jet pump motors, and can be used to determine whether the equipment is overloaded or has a phase loss.

[0051] 7. Control Layer (Command Processing): This is the "brain" of the system, employing a self-developed control system (programmable logic controller). The controller receives signals from sensors, makes judgments based on preset program logic, and then issues start or stop commands to the devices in the execution layer.

[0052] 8. Execution Layer (Action Execution): This is the "hands and feet" of the system. It receives instructions from the control layer and performs actions, which can adjust the speed of electric valves and units, achieve more precise pressure and flow control, and have significant energy-saving effects.

[0053] 9. Human-Machine Interaction and Remote Monitoring (Optional but Highly Recommended): Touchscreen (HMI), installed on the field control box, for setting parameters (such as start / stop vacuum / water level), viewing real-time data, and manual operation.

[0054] 10. Remote Monitoring Platform: Data is uploaded to the cloud or a computer / mobile app at the monitoring center via the controller's communication module (e.g., 4G / 5G, Ethernet). Administrators can remotely monitor the status of all rainfall points in real time and receive alarm information (e.g., SMS, WeChat alarms), achieving truly intelligent management.

[0055] Intelligent control logic: 1. Start-up conditions for the unit: When the system vacuum level (measured by a vacuum sensor) is lower than the set start-up threshold (e.g., -0.06MPa), it indicates that the groundwater level has risen and the vacuum level is insufficient. The control system will automatically start the feed water pump and jet pump.

[0056] 2. Conditions for stopping the unit equipment: When the system vacuum level is higher than the set stop threshold (e.g., -0.085MPa), it indicates that the water level has dropped to the target depth and the pumping effect is very good. The control system will automatically stop the jet pump and the feed pump.

[0057] 3. Advantages: It directly reflects the system's pumping efficiency, avoiding the drawbacks of relying solely on time or experience. The water level signal in the dewatering well serves as an auxiliary judgment or backup control. It forces startup when the water level is above the warning level and forces shutdown when it falls below the safe level. This provides double insurance for vacuum control.

[0058] 4. Dry run protection of equipment unit: When the level gauge in the water collection tank detects that the water level is too low, the water pump will be forcibly stopped to prevent damage from dry running.

[0059] 5. Overload protection: The motor current is monitored by a current sensor. When the current is abnormally high, the motor will automatically stop and an alarm will be triggered.

[0060] 6. Sequential Start-up and Shutdown: When starting up, start the feed water pump first, and start the jet pump after the pressure is established; when shutting down, stop the jet pump first, and then stop the feed water pump. This avoids the jet pump overheating and being damaged by running dry.

[0061] 7. Manual start / stop of the unit: Of course, users can also choose to start or stop the unit manually.

[0062] Smart Intelligence: 1. Control System: A dedicated control system + HMI is adopted as the core.

[0063] 2. Key Sensors: A vacuum sensor must be installed on the main pipe of each rainwater loop; this is the cornerstone of automatic control. A level gauge should be installed in the central collection tank.

[0064] 3. Control strategy: The strategy adopts vacuum control as the main method and water tank level protection as a secondary method.

[0065] Remote monitoring: The addition of a 4G communication module enables remote monitoring and alarm functions via a mobile app. This highly intelligent technology significantly improves management efficiency.

[0066] Equipment Precautions: 1. Sensor Accuracy and Installation: The accuracy and reliability of the sensor are crucial. The installation location should be representative, and waterproof and anti-clogging measures should be taken.

[0067] 2. System debugging: During the initial setup, the start and stop thresholds of the vacuum degree need to be repeatedly adjusted according to the site geological conditions and precipitation requirements to find the optimal value.

[0068] 3. Backup power supply: Consider equipping important locations with backup generators or UPS to prevent system failure due to power outages.

[0069] 4. Engineering Industry Usage Environment: This equipment is primarily used in engineering projects, mainly providing services for foundation pit dewatering. Its automation, intelligence, and smart features aim to ensure low-carbon energy saving, continuous stable and efficient operation, timely problem detection and assessment, and timely data transmission to guide dewatering operations, ensuring the safety of the foundation pit and its surrounding environment. Construction site environments are complex, requiring the equipment to be protected and placed in a relatively safe and fixed location. Frequent overlapping construction operations necessitate dedicated personnel to inspect deep wells, well points, and suction pipelines for damage or leaks caused by excavating machinery, mobile operations, or other work crews, while also checking the equipment's operational status.

[0070] The target parameters refer to the parameters that allow the precipitation equipment to form a stable negative pressure zone, including the rotation speed and the ultimate vacuum degree. In this embodiment, the rotation speed is 2900 r / min, and the ultimate vacuum degree is the gauge pressure value -100 Pa.

[0071] Step S102: Collect the water depth inside the drainage well and the vacuum level inside the vacuum chamber.

[0072] The water storage depth in the well refers to the water storage depth in the drainage well, which is detected by the water level sensor in the drainage well. By determining the water storage depth in the well, analytical data is provided for subsequent analysis of whether water needs to be stored or pumped out in the drainage well.

[0073] Indoor vacuum degree refers to the vacuum degree inside the vacuum chamber of the precipitation equipment. It is detected by the vacuum pressure gauge at the top of the vacuum chamber, and the detection data is converted into absolute pressure by the processing terminal. By determining the indoor vacuum degree, analytical data is provided to determine whether the negative pressure zone of the vacuum chamber meets the basic requirements for pumping water.

[0074] Step S103: Determine whether the water storage depth in the well meets the requirements of the preset precipitation depth threshold.

[0075] The precipitation depth threshold refers to the water depth threshold at which water can be pumped from the drainage well. The requirement for the precipitation depth threshold is that it must not be lower than the precipitation depth threshold. When the water depth is lower than the precipitation depth threshold, pumping must be stopped and the drainage well must be allowed to store water. When the water depth in the well is not lower than the precipitation depth threshold, pumping can continue. There are two situations for the precipitation depth threshold. One situation is the precipitation depth threshold during the pumping stage, in which the precipitation depth threshold is smaller and only needs to be higher than the distance between the bottom of the pipe and the bottom of the well. The other situation is the precipitation depth threshold during the water storage stage, in which the precipitation depth threshold is larger. Taking 5 meters as an example, during the water storage stage, ensuring a larger precipitation depth threshold allows sufficient groundwater to accumulate in the drainage well.

[0076] The processing terminal determines whether the water depth in the well is not lower than the dewatering depth threshold, thereby determining whether the dewatering equipment can pump water from the drainage well.

[0077] Step S1031: If not met, control the dewatering equipment to assist in the storage of water in the drainage well.

[0078] If the processing terminal determines that the water depth in the well is lower than the dewatering depth threshold, it indicates that there is little water in the well. In this case, continued pumping by the dewatering equipment could easily lead to the well drying out. Therefore, the dewatering equipment should be controlled to assist in storing water in the well. Specific methods are detailed in [reference needed]. Figure 2 This process indirectly improves the pumping efficiency of rainwater treatment equipment.

[0079] Step S1032: If the conditions are met, the water-absorbing equipment is controlled to draw water from the well based on the indoor vacuum level.

[0080] If the processing terminal determines that the water depth in the well is not lower than the precipitation depth threshold, it indicates that there is enough water in the drained well for the dewatering equipment to pump. Therefore, the dewatering equipment is controlled to extract the accumulated water in the well based on the indoor vacuum level. The specific method is described in [reference needed]. Figure 5 The steps.

[0081] Reference Figure 2 The steps for controlling the water storage in the auxiliary drainage wells of the precipitation equipment include: Step S200: Control the dewatering equipment to raise the end of the pre-set pumping pipe well according to the preset water storage pipe height.

[0082] Specifically, when the processing terminal determines that the water storage depth in the well is lower than the dewatering depth threshold, the processing terminal controls the lifting component on the dewatering equipment to raise the well end of the pumping pipe upwards according to the height of the water storage pipe, so that the well end of the pumping pipe is kept at a certain distance from the water in the dewatering well, thus avoiding pumping water when the dewatering well is storing water.

[0083] The height of the water storage pipeline refers to the distance between the end of the pumping pipeline and the bottom of the well when the water storage equipment is used for auxiliary water storage, taking 5 meters as an example.

[0084] Step S201: Control the dewatering equipment to form a negative pressure zone in the drainage well according to the preset initial water storage speed to promote water storage in the drainage well, and collect the vacuum degree inside the drainage well in real time.

[0085] In this process, after the pumping pipe wellhead is raised to a certain height, the treatment terminal controls the dewatering equipment to rotate at the initial water storage speed. Due to the sealing effect of the sealed well cover, when there is no water to pump from the pumping pipe, the vacuum at the nozzle will gradually be transmitted to the dewatering well, causing the vacuum in the dewatering well to gradually decrease, thus forming a negative pressure zone. The negative pressure will promote the accumulation of groundwater in the surrounding soil into the dewatering well, allowing the dewatering well to store water again. The vacuum level inside the dewatering well is collected in real time to provide data support for subsequent adjustments to the water storage of the dewatering well.

[0086] The initial rotational speed of water storage refers to the rotational speed of the dewatering equipment when it assists in the dewatering well to store water. In this embodiment, half of the maximum rotational speed of the dewatering equipment is used as an example.

[0087] The vacuum level detected inside the well refers to the vacuum level inside the drained well. It is detected by a vacuum pressure gauge in the drained well, and the detected data is converted into absolute pressure by the processing terminal. By determining the vacuum level detected inside the well, data support is provided for subsequent adjustments to the vacuum level inside the well.

[0088] Step S202: Correct the initial water storage speed based on the difference between the detected vacuum level in the well and the preset target vacuum level in the well to generate the first water storage speed.

[0089] The target vacuum level in the well refers to the optimal vacuum level in the well when water is stored in it. The specific value is determined by the operator based on the actual situation.

[0090] The initial water storage speed refers to the speed at which the dewatering equipment helps create negative pressure in the well, based on the difference in vacuum level. This speed is determined by the processing terminal, which corrects the initial water storage speed according to the difference between the detected vacuum level and the target vacuum level in the well. For specific methods, please refer to [link / reference needed]. Figure 3 The steps involve increasing the rotation speed when the vacuum level inside the well is lower than the target vacuum level, thereby accelerating the formation of a negative pressure environment inside the well. When the vacuum level inside the well is higher than the target vacuum level, the rotation speed needs to be reduced, so as to meet the water storage requirements while achieving energy saving.

[0091] Step S203: Correct the first water storage speed according to the difference between the vacuum degree detected in the well and the vacuum degree in the room, so as to generate the actual water storage speed.

[0092] The actual water storage speed refers to the speed at which the dewatering equipment ultimately assists in creating a negative pressure environment in the drainage well. This speed is obtained by the treatment terminal by correcting the initial water storage speed based on the difference between the vacuum level detected in the well and the indoor vacuum level. Specific methods are detailed in [reference needed]. Figure 4This process involves steps to achieve energy conservation.

[0093] Step S204: Control the dewatering equipment to form a negative pressure zone in the dewatering well according to the actual water storage speed to promote water storage in the dewatering well.

[0094] In this process, after determining the actual water storage speed, the treatment terminal controls the dewatering equipment to rotate at the actual water storage speed, thereby transmitting the negative pressure at the nozzle to the dewatering well, creating a stable negative pressure environment in the dewatering well, accelerating the accumulation of groundwater into the dewatering well, and ensuring the balance between the negative pressure environment in the well and the negative pressure environment in the vacuum chamber.

[0095] Reference Figure 3 The steps for correcting the initial water storage rotation speed based on the difference between the detected vacuum level in the well and the preset target vacuum level in the well to generate the first water storage rotation speed include: Step S300: Calculate the difference between the detected vacuum level in the well and the target vacuum level in the well to generate the target vacuum level difference.

[0096] The target vacuum difference refers to the difference between the current vacuum level in the drained well and the target vacuum level. It is obtained by the processing terminal calculating the difference between the detected vacuum level in the well and the target vacuum level in the well. By determining the target vacuum difference, data support is provided for subsequent analysis of the degree of rotational speed improvement.

[0097] Step S301: Normalize the target vacuum difference based on the preset standard atmospheric pressure to generate the rotational speed base correction coefficient.

[0098] The rotational speed base correction coefficient refers to the degree of influence of vacuum difference on rotational speed. It is obtained by the processing terminal by calculating the quotient of the target vacuum difference and the standard atmospheric pressure. The target vacuum difference is normalized by the standard atmospheric pressure, thereby converting the vacuum difference into a rotational speed correction coefficient. The larger the vacuum difference, the greater the correction to the rotational speed. The sign of the vacuum difference determines the direction of the rotational speed correction. A positive vacuum difference indicates that the current vacuum in the well is lower than the target vacuum, so the rotational speed needs to be increased. Conversely, when the vacuum difference is negative, the rotational speed needs to be decreased.

[0099] Step S302: Find the corresponding vacuum difference correction coefficient in the preset vacuum difference correction relationship based on the target vacuum difference.

[0100] The vacuum difference correction relationship refers to the correspondence between the target vacuum difference and the vacuum difference correction coefficient. When the target vacuum difference exceeds 30% of the standard atmospheric pressure, the vacuum difference correction coefficient is taken as 0.15 to ensure a rapid increase in the speed of the precipitation equipment. When the target vacuum difference is within 10% to 30% of the standard atmospheric pressure, the vacuum difference correction coefficient is taken as 0.1 to balance the speed of the precipitation equipment and energy consumption. When the target vacuum difference is below 10% of the standard atmospheric pressure, the vacuum difference correction coefficient is taken as 0.05 to reduce the speed of the precipitation equipment and avoid excessive pumping and energy waste.

[0101] The vacuum degree difference correction coefficient refers to the adjustment gain coefficient of the speed of the precipitation equipment based on the target vacuum degree difference. It is obtained by the processing terminal by looking up the target vacuum degree difference in the mapping table corresponding to the vacuum degree difference correction relationship.

[0102] Step S303: Adjust the basic speed correction coefficient according to the vacuum difference correction coefficient, and use the adjusted basic speed correction coefficient to correct the initial water storage speed to generate the first water storage speed.

[0103] In this process, after determining the vacuum difference correction coefficient, the processing terminal calculates the product of the vacuum difference correction coefficient and the basic speed correction coefficient to optimize the adjustment degree of speed from the perspective of vacuum difference. Then, the sum of the product and 1 is calculated to obtain the final adjustment coefficient. Finally, the product of the adjustment coefficient and the initial speed of water storage is calculated to obtain the first water storage speed.

[0104] Reference Figure 4 The steps for correcting the first water storage speed based on the difference between the vacuum level detected in the well and the vacuum level in the laboratory to generate the actual water storage speed include: Step S400: Calculate the difference between the indoor vacuum level and the well detection vacuum level to generate a negative pressure conduction differential.

[0105] Among them, the negative pressure conduction pressure difference refers to the difference between the vacuum degree in the vacuum chamber and the vacuum degree in the well. It is obtained by calculating the difference between the vacuum degree in the chamber and the vacuum degree detected in the well by the processing terminal, and reflects the stability of the negative pressure conduction in the vacuum chamber.

[0106] Step S401: Determine whether the negative pressure conduction pressure difference meets the preset conduction pressure difference threshold.

[0107] Among them, the conduction pressure difference threshold refers to the minimum pressure difference when the conduction negative pressure in the vacuum chamber is unstable. The requirement for the conduction pressure difference threshold is that it should not be greater than the conduction pressure difference threshold.

[0108] If the processing terminal determines whether the absolute value of the negative pressure conduction difference is not greater than the conduction pressure difference threshold, it can determine whether the negative pressure conduction between the vacuum chamber and the drainage well is good.

[0109] Step S4011: If it does not meet the requirements, then define the first water storage speed as the actual water storage speed.

[0110] If the processing terminal determines that the absolute value of the negative pressure conduction pressure difference is greater than the conduction pressure difference threshold, it indicates that the vacuum degree in the drainage well is significantly different from the vacuum degree in the vacuum chamber. At this time, it is highly likely that the leak in the sealed well cover has caused a change in the negative pressure environment inside the well. Therefore, an alarm is required, and the first water storage speed is defined as the actual water storage speed and remains unchanged for the time being.

[0111] Step S4012: If the conditions are met, the negative pressure transmission pressure difference is normalized according to the preset standard atmospheric pressure to generate the speed adjustment coefficient.

[0112] If the processing terminal determines that the absolute value of the negative pressure conduction pressure difference is not greater than the conduction pressure difference threshold, it indicates that the vacuum degree in the drainage well is similar to that in the vacuum chamber, and the negative pressure conduction in the vacuum chamber is good. At this time, the speed adjustment coefficient is obtained by normalizing the negative pressure conduction pressure difference according to the standard atmospheric pressure, so as to appropriately reduce the speed of the dewatering equipment to save energy.

[0113] The speed adjustment coefficient refers to the coefficient used to adjust the speed of the dewatering equipment based on the vacuum difference between the vacuum chamber and the dewatering well. It is obtained by calculating the quotient of the negative pressure conduction pressure difference and the standard atmospheric pressure from the treatment terminal. It quantifies the degree of influence of the vacuum difference on the speed reduction. The larger the vacuum difference, the greater the speed adjustment. The sign of the negative pressure conduction pressure difference determines the direction of the speed adjustment.

[0114] Step S402: Adjust the speed adjustment coefficient according to the preset air extraction suppression coefficient, and correct the first water storage speed with the adjusted speed adjustment coefficient to generate the actual water storage speed.

[0115] The pumping suppression coefficient refers to the suppression coefficient for reducing the rotation speed when the negative pressure conduction is good. It is used to avoid excessive speed reduction when the vacuum is stable, which would cause changes in the vacuum environment. In this embodiment, 0.02 is used as an example to fine-tune the rotation speed.

[0116] After determining the speed adjustment coefficient, the processing terminal calculates the product of the air extraction suppression coefficient and the speed adjustment coefficient to suppress the degree of speed adjustment and prevent drastic changes in the vacuum environment. Then, the product of the product and the initial water storage speed is calculated to obtain the speed adjustment amount. Finally, the difference between the first water storage speed and the speed adjustment amount is calculated to obtain the actual water storage speed.

[0117] Reference Figure 5 The steps for controlling the extraction of water from wells using indoor vacuum-controlled precipitation equipment include: Step S500: Normalize the difference between the indoor vacuum degree and the preset indoor target vacuum degree according to the preset standard atmospheric pressure to generate a vacuum degree deviation coefficient.

[0118] The indoor target vacuum degree refers to the vacuum degree in the vacuum chamber that meets the water flow rate requirements. It is expressed in absolute pressure. The higher the vacuum degree, the lower the absolute pressure. When the water flow rate is higher, the vacuum degree is higher and the absolute pressure is lower. The processing terminal establishes a mapping table between flow rate and vacuum degree. When in use, the required flow rate is found in the mapping table according to the user's input.

[0119] The vacuum deviation coefficient refers to the deviation coefficient between the vacuum level in the vacuum chamber and the target vacuum level. It is obtained by the processing terminal calculating the difference between the indoor vacuum level and the target vacuum level and the standard atmospheric pressure. The difference between the indoor vacuum level and the target vacuum level is normalized by the standard atmospheric pressure, thereby quantifying the degree of influence of the difference in indoor vacuum level on the rotational speed.

[0120] Step S501: Calculate the product of the vacuum deviation coefficient and the preset vacuum deviation ratio coefficient to generate the vacuum speed correction coefficient.

[0121] Among them, the vacuum deviation ratio coefficient refers to the proportion by which the rotation speed needs to be adjusted for a unit vacuum deviation, so as to ensure that the indoor vacuum can quickly approach the target vacuum.

[0122] The vacuum degree speed correction coefficient refers to the speed adjustment coefficient of the precipitation equipment based on the difference in indoor vacuum degree. It is obtained by multiplying the vacuum degree deviation coefficient and the vacuum degree deviation ratio coefficient calculated by the treatment terminal.

[0123] Step S502: Correct the preset initial water suction speed according to the vacuum speed correction coefficient to generate the first water suction speed.

[0124] Among them, the initial speed of water suction refers to the initial speed of the water pumping equipment when it pumps water, which is obtained by preset operating conditions.

[0125] The first water suction speed refers to the water suction speed adjusted according to the difference in indoor vacuum. It is calculated by the processing terminal by the sum of the vacuum speed correction coefficient and 1, and then the product of the sum and the initial water suction speed is calculated to obtain the first water suction speed.

[0126] Step S503: Collect the measured vacuum level inside the well.

[0127] The measured vacuum level inside the well refers to the vacuum level inside the current drainage well, which is detected by a vacuum pressure gauge installed inside the drainage well, and the detection data is converted into absolute pressure by the processing terminal.

[0128] Step S504: Correct the first water suction speed according to the difference between the measured vacuum degree in the well and the vacuum degree in the room, so as to generate the actual water suction speed.

[0129] The actual pumping speed refers to the actual speed at which the dewatering equipment pumps water. It is obtained by correcting the initial pumping speed at the treatment terminal based on the difference between the measured vacuum level in the well and the indoor vacuum level. The specific method is described in [reference needed]. Figure 6 The steps.

[0130] Step S505: Control the dewatering equipment to extract water accumulated in the well according to the actual pumping speed.

[0131] In this process, after determining the actual water suction speed, the treatment terminal controls the dewatering equipment to rotate at the actual water suction speed, so that the target vacuum degree is quickly formed in the vacuum chamber and the negative pressure is accelerated to be transmitted into the drainage well, thereby ensuring the pumping efficiency of the dewatering equipment.

[0132] Reference Figure 6 The steps for correcting the first pumping speed based on the difference between the measured vacuum level inside the well and the vacuum level in the laboratory to generate the actual pumping speed include: Step S600: Normalize the difference between the measured vacuum level inside the well and the vacuum level in the room according to standard atmospheric pressure to generate a vacuum conduction speed correction coefficient.

[0133] The vacuum conduction speed correction coefficient refers to the correction coefficient for the speed caused by the difference between the indoor vacuum degree and the well vacuum degree. It is obtained by calculating the difference between the measured vacuum degree in the well and the indoor vacuum degree by the processing terminal, and then calculating the quotient of the difference with the standard atmospheric pressure. When the vacuum degree in the well is small, the measured vacuum degree in the well is greater than the indoor vacuum degree. At this time, the vacuum conduction speed correction coefficient is positive to increase the speed and accelerate the negative pressure conduction. Conversely, it is negative to reduce the speed.

[0134] Step S601: Calculate the product of the vacuum conduction speed correction coefficient and the preset conduction loss compensation coefficient to generate the conduction loss speed correction coefficient.

[0135] The conduction loss compensation coefficient refers to the compensation coefficient for negative pressure conduction loss, ensuring that an effective negative pressure environment is formed in the drainage well. In this embodiment, 0.05 is used as an example.

[0136] The conduction loss speed correction coefficient refers to the influence coefficient of negative pressure conduction difference on speed, which is obtained by multiplying the vacuum conduction speed correction coefficient and the conduction loss compensation coefficient by the processing terminal.

[0137] Step S602: Correct the first water suction speed according to the transmission loss speed correction coefficient to generate the actual water suction speed.

[0138] In this process, after determining the transmission loss speed correction coefficient, the processing terminal calculates the product of the transmission loss speed correction coefficient and the initial speed of water suction to obtain the speed affected by negative pressure transmission loss. Then, the sum of the obtained speed and the first water suction speed is calculated to obtain the actual water suction speed.

[0139] Reference Figure 7 It also includes methods for adjusting the vacuum level of the vacuum chamber, the specific steps of which include: Step S700: Real-time acquisition of the water temperature inside the preset water storage tank.

[0140] Among them, the water temperature detected in the water tank refers to the water temperature in the water storage tank of the rainwater equipment, which is detected by a temperature sensor.

[0141] Step S701: Determine whether the water temperature in the water tank exceeds the preset threshold for the temperature affecting the vacuum degree.

[0142] Among them, the temperature threshold affecting vacuum degree refers to the highest temperature at which water remains in a liquid state under the current vacuum degree. It is obtained by the processing terminal by substituting the saturated vapor pressure into the inverse form of the Antoni equation.

[0143] The processing terminal determines whether the water temperature in the tank exceeds the temperature threshold that affects the vacuum level, thereby determining whether cavitation will occur, which in turn affects the vacuum level of the vacuum chamber and leads to unstable water pumping.

[0144] Step S7011: If not, continue to collect the water temperature inside the water tank in real time for cyclical judgment.

[0145] If the processing terminal determines that the water temperature detected in the water tank does not exceed the temperature threshold affecting the vacuum degree, it indicates that cavitation will not occur and the vacuum degree of the vacuum chamber remains stable. Therefore, the water temperature detected in the water tank continues to be collected in real time for cyclical judgment.

[0146] Step S7012: If so, then control the preset cooling module to cool the water in the water tank based on the difference between the detected water temperature in the water tank and the preset vacuum degree, which has no effect on the temperature.

[0147] If the processing terminal determines that the detected water temperature in the tank exceeds the temperature threshold affecting vacuum, it indicates that cavitation will occur, leading to instability in the vacuum chamber and unstable water pumping. Therefore, based on the difference between the detected water temperature and the temperature that does not affect vacuum, the cooling module is controlled to cool the water in the tank to ensure that the water temperature does not exceed the threshold, thereby ensuring the stability of the vacuum chamber. The specific method is described in [reference needed]. Figure 8 The steps.

[0148] The vacuum-insensitive temperature refers to the water temperature that will not affect the vacuum level. It is 2 to 5 degrees Celsius lower than the threshold temperature that affects the vacuum level, leaving a certain safety margin.

[0149] A refrigeration module is a module that cools the water in a water storage tank. It can be a combination of refrigeration pipes, refrigerant, compressor and radiator. The refrigeration pipes are wrapped around the outside of the water storage tank. The refrigerant carries away the heat of the water after passing through the refrigeration pipes, and then the heat is dissipated through the compressor and radiator.

[0150] Reference Figure 8 The steps for controlling the preset cooling module to cool the water in the water tank based on the difference between the detected water temperature and the preset vacuum level (which has no effect on the temperature) include: Step S800: Calculate the difference between the detected water temperature and the temperature unaffected by vacuum in the water tank to generate the regulated temperature in the water tank.

[0151] Among them, the temperature adjustment in the water tank refers to the temperature that the water needs to be lowered, which is obtained by the treatment terminal by calculating the difference between the detected water temperature in the water tank and the temperature at which the vacuum degree has no effect.

[0152] Step S801: Collect the current water storage capacity of the water tank.

[0153] The current water storage capacity refers to the volume of water in the water tank, which is calculated by detecting the water depth using a water level sensor inside the tank and then combining this with the cross-sectional area of ​​the tank.

[0154] Step S802: Calculate the product of the current water storage capacity, the preset constant pressure specific heat capacity, the preset water density, and the preset heat dissipation coefficient to generate heat per unit temperature.

[0155] Among them, the isobaric specific heat capacity refers to the isobaric specific heat capacity of water, taking 4186 J / (kg・℃) as an example. The water density refers to the density of water, taking 1000 kg / m³ as an example. The heat dissipation coefficient refers to the compensation factor for additional heat, such as the heat generated by impeller rotation, taking 1.3 as an example.

[0156] The heat per unit temperature refers to the amount of heat that water needs to dissipate to lower its temperature by one unit. The heat per unit temperature is calculated by multiplying the current water storage capacity, the specific heat capacity at constant pressure, and the water density by the treatment terminal. Then, it is multiplied by the heat dissipation coefficient to take into account the extra heat absorbed, leaving a certain heat margin, thus obtaining the heat per unit temperature.

[0157] Step S803: Calculate the quotient between the product of heat per unit temperature and the temperature regulation in the water tank and the preset target cooling time to generate cooling power.

[0158] The target cooling time refers to the time required to adjust the water temperature in the storage tank back to the target temperature; the specific value is determined by the operator.

[0159] Cooling power refers to the cooling capacity of the cooling module. It is calculated by multiplying the heat generated per unit temperature by the temperature regulation in the water tank, obtaining the total heat, and then calculating the quotient between the total heat and the target cooling time to obtain the cooling power.

[0160] Step S804: Control the cooling module to cool the water in the water storage tank according to the cooling power.

[0161] After determining the cooling power, the processing terminal controls the cooling module to cool the water in the storage tank using the cooling power, thereby preventing cavitation, which would cause the vacuum level in the vacuum chamber to be unstable and thus affect the normal operation of water pumping.

[0162] Based on the same inventive concept, embodiments of this application provide a novel multi-functional control system for precipitation equipment, comprising: The data acquisition module is used to collect the trigger signal for the completion of precipitation preparation, the water depth in the well, the indoor vacuum level, the detected vacuum level in the well, the actual vacuum level in the well, the detected water temperature in the water tank, and the current water storage capacity. A memory used to store the program for a new type of precipitation equipment control method; The processor can load and execute programs in memory to implement a new method for controlling precipitation equipment.

[0163] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0164] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed to provide a novel precipitation equipment control method.

[0165] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0166] Based on the same inventive concept, this application provides a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded and executed by the processor to control a novel precipitation equipment.

[0167] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0168] The above are all preferred embodiments of this application, which can be used in conjunction with and in combination with the company's previous patented mechanical equipment and patented products, or they can be used independently. They are not limited to use in conjunction with and in combination with the company's later developed extended mechanical equipment or products. This is not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings), unless specifically stated otherwise, can be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A novel control method for precipitation equipment, characterized in that, include: The pre-set dewatering well is collected to trigger the completion of the precipitation preparation. The preset precipitation equipment responds to the precipitation preparation completion trigger signal to form a stable negative pressure zone in the preset vacuum chamber with preset target parameters; The water depth inside the drainage well and the vacuum level inside the vacuum chamber were collected. Determine whether the water depth in the well meets the preset threshold for water depth. If not, control the dewatering equipment to assist in draining the well and storing water; If the conditions are met, the water-absorbing equipment will be controlled according to the indoor vacuum level to draw water from the well.

2. The novel precipitation equipment control method according to claim 1, characterized in that, The steps for controlling the water storage in the auxiliary drainage wells of the precipitation equipment include: The water-raising equipment is raised to the end of the pre-set pumping pipe well according to the pre-set water storage pipe height. The water storage initial rotation speed is controlled to control the dewatering equipment to form a negative pressure zone in the dewatering well to promote water storage in the dewatering well, and the vacuum degree inside the dewatering well is collected in real time. The initial water storage rotation speed is corrected based on the difference between the detected vacuum level in the well and the preset target vacuum level in the well, so as to generate the first water storage rotation speed. The first water storage speed is corrected based on the difference between the vacuum level detected in the well and the vacuum level in the room, so as to generate the actual water storage speed. The negative pressure zone in the drainage well is formed by controlling the actual water storage speed of the dewatering equipment to promote water storage in the drainage well.

3. The novel precipitation equipment control method according to claim 2, characterized in that, The steps for correcting the initial water storage rotation speed based on the difference between the detected vacuum level in the well and the preset target vacuum level in the well to generate the first water storage rotation speed include: Calculate the difference between the detected vacuum level in the well and the target vacuum level in the well to generate the target vacuum level difference; The target vacuum difference is normalized based on the preset standard atmospheric pressure to generate the basic speed correction coefficient; The corresponding vacuum difference correction coefficient is found in the preset vacuum difference correction relationship based on the target vacuum difference value; The basic speed correction factor is adjusted based on the vacuum difference correction factor, and the initial water storage speed is corrected using the adjusted basic speed correction factor to generate the first water storage speed.

4. The novel precipitation equipment control method according to claim 2, characterized in that, The steps for correcting the first water storage speed based on the difference between the vacuum level detected in the well and the vacuum level in the laboratory to generate the actual water storage speed include: Calculate the difference between the indoor vacuum level and the well-detected vacuum level to generate a negative pressure conduction differential. Determine whether the negative pressure conduction differential meets the preset conduction differential threshold requirement; If it does not meet the requirements, the first water storage speed will be defined as the actual water storage speed. If the conditions are met, the negative pressure transmission pressure difference is normalized according to the preset standard atmospheric pressure to generate the speed adjustment coefficient. The rotation speed adjustment coefficient is adjusted according to the preset air extraction suppression coefficient, and the first water storage rotation speed is corrected with the adjusted rotation speed adjustment coefficient to generate the actual water storage rotation speed.

5. The novel precipitation equipment control method according to claim 1, characterized in that, The steps for using indoor vacuum-controlled precipitation equipment to draw water from wells include: The difference between the indoor vacuum level and the preset indoor target vacuum level is normalized based on the preset standard atmospheric pressure to generate a vacuum deviation coefficient. Calculate the product of the vacuum deviation coefficient and the preset vacuum deviation ratio coefficient to generate the vacuum speed correction coefficient; The preset initial water suction speed is corrected according to the vacuum speed correction coefficient to generate the first water suction speed. The actual vacuum level inside the well was collected. The first pumping speed is corrected based on the difference between the measured vacuum level inside the well and the vacuum level in the room, so as to generate the actual pumping speed. The water extraction equipment draws water from the well based on the actual pumping speed.

6. The novel precipitation equipment control method according to claim 5, characterized in that, The steps for correcting the first pumping speed based on the difference between the measured vacuum level inside the well and the vacuum level in the laboratory to generate the actual pumping speed include: The difference between the measured vacuum level inside the well and the vacuum level in the laboratory is normalized based on standard atmospheric pressure to generate a vacuum conduction speed correction coefficient. Calculate the product of the vacuum conduction speed correction coefficient and the preset conduction loss compensation coefficient to generate the conduction loss speed correction coefficient; The first water suction speed is corrected according to the transmission loss speed correction coefficient to generate the actual water suction speed.

7. The novel precipitation equipment control method according to claim 1, characterized in that, It also includes methods for adjusting the vacuum level of the vacuum chamber, with specific steps including: Real-time monitoring of water temperature inside a pre-set water storage tank; Determine whether the water temperature inside the tank exceeds the preset threshold that affects the vacuum level. If not, continue to collect the water temperature inside the water tank in real time for cyclical judgment; If so, the preset cooling module will be controlled to cool the water in the water tank based on the difference between the detected water temperature in the water tank and the preset vacuum level, which has no effect on the temperature.

8. The novel precipitation equipment control method according to claim 7, characterized in that, The steps for controlling the water in the water tank to cool the water by controlling the preset cooling module based on the difference between the detected water temperature and the preset vacuum level (which has no effect on the temperature) include: Calculate the difference between the detected water temperature and the temperature unaffected by vacuum in the water tank to generate the temperature regulation value in the water tank; Collect the current water storage capacity of the water tank; Calculate the product of the current water storage capacity, the preset constant pressure specific heat capacity, the preset water density, and the preset heat dissipation coefficient to generate heat per unit temperature. The product of the heat generated per unit temperature and the temperature regulated in the water tank is calculated and divided by the preset target cooling time to generate the cooling power. The cooling module cools the water in the storage tank based on the cooling power control.

9. A novel multi-functional control system for precipitation equipment, characterized in that, include: The data acquisition module is used to collect the trigger signal for the completion of precipitation preparation, the water depth in the well, and the indoor vacuum level; A memory for storing a program for a novel precipitation equipment control method as described in any one of claims 1 to 8; The processor and the program in the memory can be loaded and executed by the processor to implement the novel precipitation equipment control method as described in any one of claims 1 to 8.

10. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 8.

Images