An emergency switching flow regulation and voltage regulation system based on pulse control and a control method thereof

Abstract

The present application relates to control valve technical field, especially in an emergency switching flow and pressure regulating system and control method based on pulse control, including the following steps: receiving signal, judging emergency situation, identifying emergency opening valve or emergency closing valve, and sending corresponding emergency control instruction; executing emergency opening valve control step or emergency closing valve control step; emergency opening valve control step includes: sending emergency opening valve control instruction to electric ball valve B, water flow from water outlet cavity enters into the lower cavity of pressure cavity through electric ball valve B; sending emergency opening valve control instruction to electric ball valve A, water flow in the upper cavity of pressure cavity is discharged to the atmosphere outside through electric ball valve A, and the valve is opened; emergency closing valve control step includes: sending emergency closing valve control instruction to electric ball valve A, water flow from water inlet cavity enters into the upper cavity of pressure cavity through electric ball valve A; sending emergency closing valve control instruction to electric ball valve B, water flow in the lower cavity of pressure cavity is discharged to the atmosphere outside through electric ball valve B, and the valve is closed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of control valves, in particular to an emergency switching flow and pressure regulating system based on pulse control and a control method. BACKGROUND

[0002] In water supply, irrigation and fluid conveying systems, flow and pressure regulating valves are the key equipment for accurate control of flow and pressure. Traditional flow and pressure regulating valves mostly use a combination of mechanical pilot valve control and self-powered hydraulic drive. Although they do not require external power, they gradually reveal some inherent defects in practical applications.

[0003] Firstly, in terms of flow capacity, traditional flow and pressure regulating valves often fail to achieve true full opening operation. The control upper chamber is usually connected to the valve outlet pipeline, resulting in residual pressure inside the valve chamber. This residual pressure acts on the upper part of the valve core or piston, forming a valve closing force and limiting the full action of the actuator. Especially when the system inlet pressure is insufficient or the required flow is large, the valve cannot reach the theoretical full diameter state, causing unnecessary local hydraulic loss and affecting the maximum water carrying capacity and conveying efficiency of the pipeline.

[0004] Secondly, in terms of control performance and intelligence, existing valves have significant shortcomings. The outlet pressure or flow rate of the valve is completely dependent on the spring pre-tightening force or the position of the top rod of the manually adjusted mechanical pilot valve, and the adjustment process is tedious and has limited precision. Operators cannot remotely set, monitor in real time, or automatically feedback adjust according to changes in working conditions, making it difficult to meet the requirements of modern intelligent water management or fluid control systems for intelligence and automation.

[0005] Therefore, the flow and pressure regulating valve in the prior art has obvious shortcomings in flow capacity and intelligent control, and there is an urgent need for a solution with full diameter capacity. SUMMARY

[0006] To solve the problems of traditional valves caused by residual pressure, such as inability to fully open, insufficient control precision, and low automation level, the present application proposes an emergency switching flow and pressure regulating system based on pulse control and a control method.

[0007] To achieve this purpose, the present application adopts the following technical solutions:

[0008] An emergency switching flow and pressure regulating control method based on pulse control, the emergency switching flow and pressure regulating method comprising the following steps:

[0009] Step S1: receiving signals, determining emergency situations, identifying emergency opening or emergency closing, and sending corresponding emergency control instructions;

[0010] Step S2: executing an emergency open valve control step S2-1 or an emergency close valve control step S2-2;

[0011] wherein the emergency open valve control step S2-1 comprises:

[0012] Step S2-1-1: sending an emergency open valve control instruction to the electric ball valve B, the first joint B and the fourth joint B of the electric ball valve B being communicated, water flow from the water outlet cavity into the lower cavity of the pressure cavity through the electric ball valve B;

[0013] Step S2-1-2: sending an emergency open valve control instruction to the electric ball valve A, the third joint A and the fourth joint A of the electric ball valve A being communicated, water flow in the upper cavity of the pressure cavity being discharged to the atmosphere through the electric ball valve A;

[0014] so that the diaphragm in the pressure cavity of the valve rises, and the valve opens;

[0015] The emergency close valve control step S2-2 comprises:

[0016] Step S2-2-1: sending an emergency close valve control instruction to the electric ball valve A, the first joint A and the fourth joint A of the electric ball valve A being communicated, water flow from the water inlet cavity into the upper cavity of the pressure cavity through the electric ball valve A;

[0017] Step S2-2-2: sending an emergency close valve control instruction to the electric ball valve B, the first joint B and the second joint B of the electric ball valve B being communicated, water flow in the lower cavity of the pressure cavity being discharged to the atmosphere through the electric ball valve B;

[0018] so that the diaphragm in the pressure cavity of the valve falls, and the valve closes.

[0019] Preferably, wherein the step S1 further comprises a power failure emergency method S1-1, comprising the following steps:

[0020] Step S1-1-1: identifying a power failure signal, judging as a power failure emergency situation, and identifying as an emergency open valve;

[0021] Step S1-1-2: sending a control instruction to the UPS backup power supply, the UPS backup power supply supplying power to the electric ball valve A and the electric ball valve B, and executing the step S2-1.

[0022] Preferably, wherein the step S1 further comprises a water pressure acquisition failure emergency method S1-2, comprising the following steps:

[0023] Step S1-2-1: acquiring a set water pressure value P 设 , a water pressure value P 进 on the water inlet side, and a water pressure value P 出 on the water outlet side;

[0024] Step S1-2-2: if P 设 > P 进 > P 出 , executing the step S2-1.出 <P 设 If P 出 >P 设 If P 出 >P 进 If the situation is identified as an emergency situation due to a water pressure acquisition failure, it is determined to be an emergency valve opening, and step S2-1 is executed.

[0025] Preferably, step S1 further includes a low-temperature emergency method S1-3, comprising the following steps:

[0026] Step S1-3-1: Obtain the heating cable activation temperature T1, heating cable deactivation temperature T2, and valve internal temperature T. t Where T1 < T2, and T1 > 0℃;

[0027] Step S1-3-2: If T t =T1, then start the heat tracing cable; if T t If T ≥ T2, then discontinue the heat tracing cable; if T t If <T1, it is determined to be a low temperature emergency situation, identified as emergency valve opening, and step S2-1 is executed.

[0028] Preferably, step S1 further includes emergency water quality monitoring methods S1-4, comprising the following steps:

[0029] Step S1-4-1: Obtain the qualified water quality standards and the current water quality status;

[0030] Step S1-4-2: If the current water quality does not meet the qualified water quality standard, it is judged as an emergency situation for water quality monitoring, identified as an emergency valve closure, and step S2-2 is executed.

[0031] Preferably, step S1 further includes emergency pipe burst response method S1-5, comprising the following steps:

[0032] Step S1-5-1: Obtain the average flow rate F0 and real-time flow rate F1 on the export side;

[0033] Step S1-5-2: If F1 > 1.5F0, it is determined to be an emergency situation of pipe burst, identified as emergency valve closure, and step S2-2 is executed.

[0034] Preferably, it includes a pulse control method Q, which includes an opening increase method Q1 and an opening decrease method Q2;

[0035] The opening increase method Q1 includes the following steps:

[0036] Step Q1-1: Send control commands to electric ball valve B and lower chamber inlet solenoid valve. The first connector B and the third connector B of electric ball valve B are connected. The inlet chamber is connected to the lower chamber of the pressure chamber through the lower chamber inlet solenoid valve and electric ball valve B.

[0037] Step Q1-2: Send control commands to electric ball valve A and upper chamber outlet solenoid valve. The fourth connector A and the second connector A of electric ball valve A are connected. The upper chamber of the pressure chamber is connected to the atmosphere through electric ball valve A and upper chamber outlet solenoid valve.

[0038] Step Q1-3: Send pulse control signals to the lower chamber inlet solenoid valve and the upper chamber outlet solenoid valve. The lower chamber inlet solenoid valve performs pulse-type water intake to the lower chamber, and the upper chamber outlet solenoid valve performs pulse-type water drainage to the upper chamber.

[0039] This allows for pulse-based control to increase the valve opening.

[0040] The opening reduction method Q2 includes the following steps:

[0041] Step Q2-1: Send control commands to electric ball valve A and upper chamber inlet solenoid valve. The fourth connector A and the second connector A of electric ball valve A are connected. The inlet chamber is connected to the upper chamber of the pressure chamber through the upper chamber inlet solenoid valve and electric ball valve A.

[0042] Step Q2-2: Send control commands to electric ball valve B and lower chamber outlet solenoid valve. The first connector B and the third connector B of electric ball valve B are connected. The lower chamber of the pressure chamber is connected to the atmosphere through electric ball valve B and lower chamber outlet solenoid valve.

[0043] Step Q2-3: Send pulse control signals to the upper chamber inlet solenoid valve and the lower chamber outlet solenoid valve. The upper chamber inlet solenoid valve performs pulse-type water intake to the upper chamber, and the lower chamber outlet solenoid valve performs pulse-type water drainage to the lower chamber.

[0044] This allows for pulse-based control to reduce the valve opening.

[0045] Preferably, step S1 further includes an emergency response method S1-6 for solenoid valve failure, comprising the following steps:

[0046] Step S1-6-1: Obtain the total count C of pulse signals received by the solenoid valve during the process of the valve changing from a fully open valve state to a fully closed valve state or from a fully closed valve state to a fully open valve state. 总 ;

[0047] Obtain the pulse signal count C1 received by the solenoid valve after each control command;

[0048] Get the set water pressure value P 设 and the water pressure value P at the outlet side 出 ;

[0049] Step S1-6-2: If C1 > C 总 And P 出 <P 设 If the situation is as described above, it is determined to be an emergency situation of solenoid valve failure, and the emergency valve opening is identified, and step S2-1 is executed.

[0050] An emergency switching and voltage regulation control system based on pulse control is provided, which applies the above-mentioned emergency switching and voltage regulation control method based on pulse control.

[0051] The flow and pressure regulation control system includes a main valve, electric ball valve A, electric ball valve B, lower chamber inlet solenoid valve, upper chamber inlet solenoid valve, upper chamber outlet solenoid valve, lower chamber outlet solenoid valve, and a control unit.

[0052] The main valve is provided with an inlet chamber, an outlet chamber and a pressure chamber. The pressure chamber is divided into an upper chamber and a lower chamber by a valve core assembly, and the valve core assembly is used to block and open the connection between the inlet chamber and the outlet chamber.

[0053] The water inlet chamber is connected to the upper chamber in sequence through the upper chamber water inlet solenoid valve and the electric ball valve A. The upper chamber is also connected to the outside atmosphere in sequence through the electric ball valve A and the upper chamber water outlet solenoid valve.

[0054] The water inlet chamber is connected to the lower chamber in sequence through the lower chamber water inlet solenoid valve and the electric ball valve B. The lower chamber is also connected to the outside atmosphere in sequence through the electric ball valve B and the lower chamber water outlet solenoid valve.

[0055] The control unit is communicatively connected to the electric ball valve A, electric ball valve B, lower chamber inlet solenoid valve, upper chamber inlet solenoid valve, upper chamber outlet solenoid valve and lower chamber outlet solenoid valve respectively.

[0056] Preferably, it also includes an inlet pressure sensor, an outlet pressure sensor, a heating tape, a temperature sensor, a flow meter, and a UPS backup power supply.

[0057] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0058] 1. By combining solenoid valves with the coordinated control mechanism of electric ball valves, the residual pressure in the pressure chamber of the main valve is eliminated from restricting the movement of the valve core assembly, ensuring that the main valve can achieve full opening under various working conditions; at the same time, combined with the pulse control of different solenoid valves by the control unit, the specific opening degree of the main valve can be intelligently adjusted.

[0059] 2. By combining multi-dimensional analysis processes, intelligent control of pressure, temperature, water quality, and flow rate can be achieved, which has significant advantages in improving the system's water flow capacity, enhancing control accuracy, and ensuring operational reliability. Attached Figure Description

[0060] Figure 1 This is a schematic diagram illustrating the working principle of the emergency valve opening in the flow regulation and pressure regulation control method of the present invention;

[0061] Figure 2 This is a schematic diagram illustrating the working principle of the emergency valve shut-off in the flow regulation and pressure regulation control method of the present invention.

[0062] Figure 3 This is a schematic diagram illustrating the working principle of the valve opening increase method in the flow regulation and pressure regulation control method of the present invention;

[0063] Figure 4 This is a schematic diagram illustrating the working principle of the valve opening reduction method in the flow regulation and pressure regulation control method of the present invention;

[0064] Figure 5 This is a schematic diagram of the structure of one embodiment of the main valve of the present invention.

[0065] The components include: main valve 10, valve stem 11, valve core 12, diaphragm 13, inlet chamber 101, outlet chamber 102, pressure chamber 103, upper chamber 1031, lower chamber 1032, electric ball valve A20, first connector A21, second connector A22, third connector A23, fourth connector A24, electric ball valve B30, first connector B31, second connector B32, third connector B33, fourth connector B34, lower chamber inlet solenoid valve 41, upper chamber inlet solenoid valve 42, upper chamber outlet solenoid valve 43, lower chamber outlet solenoid valve 44, inlet pressure sensor 51, and outlet pressure sensor 52. Detailed Implementation

[0066] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0067] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," and "third" may explicitly or implicitly include one or more of that feature.

[0069] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0070] The following is in conjunction with the appendix Figures 1 to 5 The technical solution of the present invention will be further illustrated through specific embodiments.

[0071] An emergency switching current and voltage regulation control method based on pulse control includes the following steps:

[0072] Step S1: Receive signal, determine emergency situation, identify emergency valve opening or emergency valve closing, and send corresponding emergency control command;

[0073] Step S2: Execute emergency valve opening control step S2-1 or emergency valve closing control step S2-2;

[0074] The emergency valve opening control step S2-1 includes:

[0075] Step S2-1-1: Send an emergency valve opening control command to the electric ball valve B30. The first connector B31 and the fourth connector B34 of the electric ball valve B30 are connected, and the water flows from the outlet chamber 102 into the lower chamber 1032 of the pressure chamber 103 through the electric ball valve B30.

[0076] Step S2-1-2: Send an emergency valve opening control command to the electric ball valve A20. The third connector A23 and the fourth connector A24 of the electric ball valve A20 are connected, and the water in the upper chamber 1031 of the pressure chamber 103 is discharged to the atmosphere through the electric ball valve A20.

[0077] This causes the diaphragm in the pressure chamber 103 of the valve to rise, thus opening the valve;

[0078] Emergency valve closure control step S2-2 includes:

[0079] Step S2-2-1: Send an emergency valve closing control command to the electric ball valve A20. The first connector A21 and the fourth connector A24 of the electric ball valve A20 are connected. Water flows from the inlet chamber 101 through the electric ball valve A20 into the upper chamber 1031 of the pressure chamber 103.

[0080] Step S2-2-2: Send an emergency valve closing control command to the electric ball valve B30. The first connector B31 and the second connector B32 of the electric ball valve B30 are connected, and the water in the lower chamber 1032 of the pressure chamber 103 is discharged to the atmosphere through the electric ball valve B30.

[0081] This causes the diaphragm in the pressure chamber 103 of the valve to descend, thus closing the valve.

[0082] This invention provides an emergency switching flow and pressure regulation control method based on pulse control, aiming to solve the problems of the main valve's control valve being unable to operate at full opening due to residual pressure and lacking remote automatic control capabilities. Specifically, the flow and pressure regulation control method of this invention is applied to a flow and pressure regulation control system, which includes a main valve 10, an electric ball valve A20, an electric ball valve B30, and a control unit. The main valve 10 internally forms an inlet chamber 101, an outlet chamber 102, and a pressure chamber 103. The pressure chamber 103 is divided into an upper chamber 1031 and a lower chamber 1032 by a valve core assembly. The main valve 10 serves as the basic actuating unit, and its valve core assembly specifically includes a diaphragm 13 and a valve core 12 connected by a valve stem 11. The valve core 12 is located at the connection between the inlet chamber 101 and the outlet chamber 102, and is used to directly control the opening degree of the fluid channel. The diaphragm 13 divides the pressure chamber 103 into the upper chamber 1031 and the lower chamber 1032, forming a pressure sensing area. The diaphragm 13 can convert the pressure difference between the upper and lower chambers into mechanical force to drive the valve core 12 to move, thereby realizing the adjustment of the opening degree of the fluid channel.

[0083] When executing emergency valve opening control step S2-1, if Figure 1 As shown, by controlling the electric ball valve B30, the outlet chamber 102 is connected to the lower chamber 1032, allowing the water pressure in the outlet chamber 102 to enter the lower chamber 1032 and increase its pressure. At the same time, the electric ball valve A20 is controlled to connect the upper chamber 1031 to the atmosphere, reducing the pressure in the upper chamber 1031. This creates a pressure difference between the high pressure in the lower chamber and the low pressure in the upper chamber, driving the diaphragm 13 to rise and causing the valve core 12 to open.

[0084] When executing emergency valve closure control step S2-2, if Figure 2 As shown, by controlling the electric ball valve A20, the water inlet chamber 101 is connected to the upper chamber 1031, and the high pressure in the water inlet chamber enters the upper chamber 1031. By controlling the electric ball valve B30, the lower chamber 1032 is connected to the atmosphere, reducing the pressure in the lower chamber 1032 and forming a pressure difference between the high pressure in the upper chamber and the low pressure in the lower chamber, which drives the diaphragm 13 to descend and cause the valve core 12 to close.

[0085] In summary, the emergency switching flow and pressure regulation control method of the present invention solves the problem that traditional flow and pressure regulating valves cannot achieve full opening due to residual pressure by using a mechanism of independent control of separate chambers and connection to the atmosphere. This allows the valve to reach its theoretical full-bore state, significantly improving the pipeline's water flow capacity. In addition, it breaks through the limitation of traditional flow and pressure regulating valves relying on mechanical pilot valve control. By constructing an emergency control path through the path switching of an electric ball valve, it realizes remote setting, real-time monitoring, and adaptive adjustment under operating conditions, effectively meeting the needs of intelligent fluid control.

[0086] Furthermore, step S1 also includes a power outage emergency method S1-1, comprising the following steps:

[0087] Step S1-1-1: Identify the power failure signal, determine if it is a power failure emergency situation, and identify it as an emergency valve opening;

[0088] Step S1-1-2: Send control commands to the UPS backup power supply. The UPS backup power supply supplies power to electric ball valve A20 and electric ball valve B30, and executes step S2-1.

[0089] UPS power supply refers to an uninterruptible power supply system, which can be implemented using standby UPS, online UPS, or online interactive UPS, etc. Its purpose is to provide backup power support for control units during power outages, ensuring the continuous operation of critical control functions.

[0090] Specifically, the system automatically switches to UPS power supply when the normal mains power supply is interrupted and immediately executes step S2-1, thus implementing a safety protection mechanism in the event of a power outage. When the mains power supply is interrupted, the control unit determines it as a power outage emergency and identifies it as an emergency valve opening, ensuring normal water supply even during a power outage. Because the UPS power supply is activated, in subsequent applications, the control unit can still control electric ball valves A20 and B30 and execute step S2-1, ensuring normal system operation.

[0091] The intervention of UPS backup power ensures the power supply to critical actuators (electric ball valves) during power outages, ensuring reliable execution of emergency valve opening actions, preventing valve jamming due to power outages, guaranteeing the continuity of fluid transportation needs such as water supply under power outage conditions, and improving the system's fault tolerance and operational reliability in power failure scenarios.

[0092] Furthermore, step S1 also includes an emergency method S1-2 for water pressure acquisition failure, comprising the following steps:

[0093] Step S1-2-1: Obtain the set water pressure value P 设 Water pressure value P at the inlet side 进 and the water pressure value P at the outlet side 出 ;

[0094] Step S1-2-2: If P 出 <P 设 If P 出 >P 设 If P 出 >P 进 If the situation is identified as an emergency situation due to a water pressure acquisition failure, it is determined to be an emergency valve opening, and step S2-1 is executed.

[0095] The pressure values ​​of the inlet and outlet sides are continuously collected by the inlet pressure sensor 51 and the outlet pressure sensor 52, and the required outlet water pressure value P is set by the control unit. 设 When P 出 Below P 设 The control unit then increases the valve opening, thereby increasing the water pressure on the outlet side; when P 出 Higher than P 设 The valve opening is then reduced by controlling the control unit to suppress the risk of overpressure; when P 出 Abnormally higher than P 进 If this occurs, it is determined to be an emergency situation due to a water pressure acquisition failure, identified as an emergency valve opening, and step S2-1 is executed. A significant safety breakthrough has been achieved through the water pressure acquisition failure emergency method S1-2. Under normal operation, the outlet water pressure should theoretically not be higher than the inlet water pressure. If this situation occurs (P...),... 出 >P 进 This refers to potential failures in the water pressure acquisition system (such as pressure sensors, transmission lines, or signal processing units).

[0096] In conventional control logic, only the outlet water pressure value is compared with the set value, and the valve opening is adjusted based on the comparison result. However, the water pressure acquisition fault emergency method S1-2 of this invention is equivalent to giving the control system a self-diagnostic capability, upgrading it from passively executing commands to an intelligent agent that can actively identify its own health status. By actively switching the valve to the fully open state, it effectively prevents secondary accidents caused by the failure of the control system itself.

[0097] Furthermore, step S1 also includes cryogenic emergency methods S1-3, comprising the following steps:

[0098] Step S1-3-1: Obtain the heating cable activation temperature T1, heating cable deactivation temperature T2, and valve internal temperature T. t Where T1 < T2, and T1 > 0℃;

[0099] Step S1-3-2: If T t =T1, then start the heat tracing cable; if T t If T ≥ T2, then discontinue the heat tracing cable; if T tIf <T1, it is determined to be a low temperature emergency situation, identified as emergency valve opening, and step S2-1 is executed.

[0100] The low-temperature emergency method S1-3 establishes a graded, proactive, and intelligent protection system for low-temperature freezing damage risks, significantly improving the operational reliability of valves and the safety of equipment in frigid environments.

[0101] The low-temperature emergency method S1-3 sets two key temperature thresholds (heating cable activation temperature T1 and heating cable deactivation temperature T2), forming a complete temperature management logic. When the valve internal temperature T... t When the temperature drops to the activation temperature T1 of the heating cable, the system first activates the heating cable for active intervention. This is the first level of preventative protection, designed to prevent freezing through conventional heating methods. When the valve internal temperature T... t The heating tape is deactivated when the temperature reaches T2 or above to prevent overheating and energy waste. This design achieves a balance between energy saving and freeze protection. When the valve internal temperature T... t In extreme cases where the temperature drops further below T1, the system decisively upgrades to Level 2 emergency protection, which determines it as a low-temperature emergency and initiates emergency valve opening. This tiered response mechanism ensures a precise match between response measures and risk levels, balancing energy efficiency and absolute safety.

[0102] To further explain, the core safety logic of the low-temperature emergency method S1-3 lies in: when the temperature T inside the valve... t When the temperature continues to drop and exceeds the preset operating range of the heat tracing system, the most dangerous situation is that when the valve is closed or slightly open, the stagnant water in its cavity freezes and expands, causing irreversible freezing and cracking damage to critical components such as the valve body and diaphragm. By immediately executing the emergency valve opening S2-1, the valve is switched to the full-bore state, which promotes the continuous flow of fluid in the pipeline and greatly reduces the possibility of static freezing.

[0103] In one specific implementation, a temperature sensor is installed on the main valve 10 to monitor the valve body temperature in real time. The control unit uses a microcontroller to process the temperature data, and it stores the set values ​​T1=2℃ and T2=5℃. When the temperature sensor detects that the temperature has dropped to 2℃, the control unit outputs a signal to start the heat tracing cable. When the temperature rises to 5℃, the control unit stops the heat tracing cable. If the temperature continues to drop below 2℃, the control unit immediately controls the electric ball valve B30 to switch to the outlet chamber 102 to connect with the lower chamber 1032, and at the same time controls the electric ball valve A20 to switch to the upper chamber 1031 to connect with the outside atmosphere. This effectively prevents the valve from jamming due to water freezing in the valve chamber and ensures the reliable operation of the main valve in low-temperature environments.

[0104] Furthermore, step S1 also includes emergency water quality monitoring method S1-4, which includes the following steps:

[0105] Step S1-4-1: Obtain the qualified water quality standards and the current water quality status;

[0106] Step S1-4-2: If the current water quality does not meet the qualified water quality standard, it is judged as an emergency situation for water quality monitoring, identified as an emergency valve closure, and step S2-2 is executed.

[0107] In practical applications, the qualified water quality standard refers to the specific threshold values ​​that define acceptable water quality. These can be determined by upper limits for turbidity, pH ranges, or concentration limits for specific pollutants. The aim is to provide an objective benchmark and avoid the uncertainty caused by subjective assessments. The current water quality status refers to water quality data obtained through real-time monitoring by sensors. This data can be acquired using online water quality analyzers or periodic sampling and testing. The purpose is to ensure that control decisions are based on the latest environmental conditions rather than historical data, effectively responding to sudden changes in water quality. The decision logic of the water quality monitoring emergency method S1-4 is a mechanism that dynamically adjusts valve operation based on the matching results between the current water quality status and the qualified water quality standard. Its purpose is to establish a direct correlation between water quality anomalies and valve status, promptly blocking pollution risks.

[0108] Specifically, when the system analysis determines that the current water quality does not meet the qualified water quality standard, it is judged as an emergency situation for water quality monitoring, the emergency valve is identified, and S2-2 is executed to cut off the water flow, thereby forming a closed-loop control mechanism based on the water quality status, ensuring that valve operation is closely related to water quality safety, and avoiding chain failures caused by continued operation under polluted conditions.

[0109] Furthermore, step S1 also includes emergency response method S1-5 for burst pipes, comprising the following steps:

[0110] Step S1-5-1: Obtain the average flow rate F0 and real-time flow rate F1 on the export side;

[0111] Step S1-5-2: If F1 > 1.5F0, it is determined to be an emergency situation of pipe burst, identified as emergency valve closure, and step S2-2 is executed.

[0112] A flow meter is a sensing device used to monitor fluid flow in real time. It can be implemented using electromagnetic flow meters, ultrasonic flow meters, or turbine flow meters, etc., with the aim of providing accurate flow data input. The outlet-side average flow rate F0 is a dynamic baseline value calculated based on historical flow data. It can be achieved using a moving average algorithm or an exponential smoothing algorithm, and its purpose is to distinguish between instantaneous fluctuations and continuous abnormal states. The real-time flow rate F1 refers to the instantaneous flow rate value directly obtained by the flow meter at the current moment. It can be obtained based on the flow meter's real-time output signal, and its purpose is to provide immediate feedback on the flow status.

[0113] The pipe rupture emergency method S1-5 monitors the outlet flow rate in real time and compares it with the "average flow rate F0" that characterizes normal operating conditions. This allows it to accurately detect the typical characteristic of a sharp increase in flow rate when a pipe ruptures. The established criterion of "F1 > 1.5F0" effectively filters out normal flow fluctuations and reliably identifies abnormally high flow rates caused by pipe ruptures, demonstrating clear and reliable diagnostic logic. Once the conditions are met, the system can complete the judgment and automatically initiate the emergency valve shut-off procedure within milliseconds. Its response speed far exceeds that of manual intervention, gaining valuable time to control the situation.

[0114] To further explain, a pipe burst can instantly lead to a massive waste of water resources and may trigger serious secondary disasters such as road collapses, infrastructure flooding, and traffic disruptions. The core of pipe burst emergency response method S1-5 lies in executing the crucial "emergency valve shut-off" operation at the initial stage of the accident, quickly cutting off the water supply to the affected pipe section at its source. This not only minimizes water loss but also effectively prevents further erosion and damage to surrounding infrastructure and the environment by rapidly reducing pressure and flow at the leak point, thus minimizing the economic losses and social impact of the accident.

[0115] Furthermore, it includes a pulse control method Q, which includes an opening increase method Q1 and an opening decrease method Q2;

[0116] The opening increase method Q1 includes the following steps:

[0117] Step Q1-1: Send control commands to electric ball valve B30 and lower chamber inlet solenoid valve 41. The first connector B31 and the third connector B33 of electric ball valve B30 are connected. The inlet chamber 101 is connected to the lower chamber 1032 of pressure chamber 103 through lower chamber inlet solenoid valve 41 and electric ball valve B30.

[0118] Step Q1-2: Send control commands to electric ball valve A20 and upper chamber outlet solenoid valve 43. The fourth connector A24 and the second connector A22 of electric ball valve A20 are connected. The upper chamber 1031 of pressure chamber 103 is connected to the atmosphere through electric ball valve A20 and upper chamber outlet solenoid valve 43.

[0119] Step Q1-3: Send pulse control signals to the lower chamber water inlet solenoid valve 41 and the upper chamber water outlet solenoid valve 43. The lower chamber water inlet solenoid valve 41 performs pulse-type water inlet to the lower chamber 1032, and the upper chamber water outlet solenoid valve 43 performs pulse-type water outlet to the upper chamber 1031.

[0120] This allows for pulse-based control to increase the valve opening.

[0121] The opening reduction method Q2 includes the following steps:

[0122] Step Q2-1: Send control commands to electric ball valve A20 and upper chamber inlet solenoid valve 42. The fourth connector A24 and the second connector A22 of electric ball valve A20 are connected. The inlet chamber 101 is connected to the upper chamber 1031 of pressure chamber 103 through upper chamber inlet solenoid valve 42 and electric ball valve A20.

[0123] Step Q2-2: Send control commands to electric ball valve B30 and lower chamber outlet solenoid valve 44. The first connector B31 and the third connector B33 of electric ball valve B30 are connected. The lower chamber 1032 of pressure chamber 103 is connected to the atmosphere through electric ball valve B30 and lower chamber outlet solenoid valve 44.

[0124] Step Q2-3: Send pulse control signals to the upper chamber water inlet solenoid valve 42 and the lower chamber water outlet solenoid valve 44. The upper chamber water inlet solenoid valve 42 performs pulse-type water inlet to the upper chamber 1031, and the lower chamber water outlet solenoid valve 44 performs pulse-type water outlet to the lower chamber 1032.

[0125] This allows for pulse-based control to reduce the valve opening.

[0126] The pulse control method Q of the present invention is specifically applied to a flow and pressure regulating system, which also includes a lower chamber water inlet solenoid valve 41, an upper chamber water inlet solenoid valve 42, an upper chamber water outlet solenoid valve 43, and a lower chamber water outlet solenoid valve 44. The above solenoid valves are pulse solenoid valves, used to receive different control commands, thereby implementing the specific pulse control method.

[0127] Specifically, the pulse control method Q discretizes the continuous fluid injection or discharge process into numerous, minute steps by sending pulse control signals to the inlet and outlet solenoid valves. This "pulse-type" drive allows the movement of the diaphragm 13 and valve core 12 to be precise to the millimeter or even micrometer level, thereby enabling extremely fine stepless adjustment of the valve opening. This completely overcomes the shortcomings of traditional mechanical adjustment methods, such as limited accuracy, susceptibility to over-adjustment, and dead zones, making the control of outlet pressure or flow more precise and stable, effectively eliminating pressure fluctuations and water hammer effects in the pipeline network, and greatly improving the stability and reliability of the conveying system.

[0128] To further explain, in the method Q1 for increasing the valve opening, the system controls the electric ball valves A20 and B30 to be energized, causing the electric ball valve B30 to switch to the position where the lower chamber inlet solenoid valve 41 is connected to the lower chamber 1032, while the electric ball valve A20 switches to the position where the upper chamber 1031 is connected to the upper chamber outlet solenoid valve 43. Subsequently, the system controls the lower chamber inlet solenoid valve 41 and the upper chamber outlet solenoid valve 43 to be energized, while the upper chamber inlet solenoid valve 42 and the lower chamber outlet solenoid valve 44 are de-energized. Water flows from the inlet chamber 101 into the lower chamber 1032 through the lower chamber inlet solenoid valve 41, while the water in the upper chamber 1031 is discharged into the atmosphere through the upper chamber outlet solenoid valve 43. This creates a pressure gradient difference where the pressure in the lower chamber 1032 rises while the pressure in the upper chamber 1031 quickly returns to zero, driving the valve opening to increase.

[0129] In the method Q2 for reducing the valve opening, the system controls the electric ball valves A20 and B30 to be energized, causing the electric ball valve A20 to switch to the position where the upper chamber inlet solenoid valve 42 is connected to the upper chamber 1031, while the electric ball valve B30 switches to the position where the lower chamber 1032 is connected to the lower chamber outlet solenoid valve 44. Subsequently, the system controls the upper chamber inlet solenoid valve 42 and the lower chamber outlet solenoid valve 44 to be energized, while the lower chamber inlet solenoid valve 41 and the upper chamber outlet solenoid valve 43 are de-energized. As a result, water flows into the upper chamber 1031 to increase the pressure, while the water in the lower chamber 1032 is discharged into the atmosphere to release the pressure, thereby driving the valve opening to decrease.

[0130] The pulse solenoid valve actuates only momentarily upon receiving a pulse signal, operating in a mode of instantaneous energization and instantaneous opening and closing. Compared to proportional valves or servo valves that require continuous energization to maintain the valve position, its energy consumption is significantly reduced. Simultaneously, the movement of the diaphragm 13 and valve core 12 is a micro-motion accompanying the pulse rather than a violent, continuous motion. This greatly reduces the impact and wear on mechanical components, helps extend the service life of the valve's main seals and actuator, and improves the overall economy and reliability of the equipment.

[0131] The pulse control method Q, along with the aforementioned emergency switching methods, is integrated into the same hardware system. By changing the logic of the control commands, it can seamlessly switch between a "coarse adjustment" emergency mode and a "fine adjustment" precision mode. This design enables a single valve device to simultaneously possess the ability to respond quickly to emergencies and the high control quality to meet the needs of precise daily adjustment, achieving a "rigid yet flexible" intelligent control that fully meets the comprehensive requirements of modern intelligent fluid systems for equipment multifunctionality, high efficiency, and high reliability.

[0132] Furthermore, step S1 also includes an emergency response method S1-6 for solenoid valve failure, comprising the following steps:

[0133] Step S1-6-1: Obtain the total count C of pulse signals received by the solenoid valve during the process of the valve changing from a fully open valve state to a fully closed valve state or from a fully closed valve state to a fully open valve state.总 ;

[0134] Obtain the pulse signal count C1 received by the solenoid valve after each control command;

[0135] Get the set water pressure value P 设 and the water pressure value P at the outlet side 出 ;

[0136] Step S1-6-2: If C1 > C 总 And P 出 <P 设 If the situation is as described above, it is determined to be an emergency situation of solenoid valve failure, and the emergency valve opening is identified, and step S2-1 is executed.

[0137] The emergency response method S1-6 for solenoid valve failure constructs an intelligent fault diagnosis mechanism based on multi-parameter fusion judgment, which can accurately identify the hidden failure of the solenoid valve, thereby effectively ensuring the reliability of the pulse fine control mode and maintaining the overall safe operation of the system.

[0138] By introducing "pulse signal count" as a key diagnostic parameter, the actual pulse signal count C1 received by the solenoid valve during a single adjustment task is compared with the pulse signal count C required to complete the full stroke. 总 It can sensitively detect abnormal states of the actuator. When C1>C 总 When the valve fails to reach its full position, it indicates that the control system has issued a command sufficient to complete the full stroke, but the valve has not yet reached its full position. This precisely points to a possible jamming, blockage, or internal leakage in the solenoid valve itself, or a fault such as jamming in the valve core assembly it drives. This enables real-time, online assessment of the health status of core components.

[0139] In traditional control systems, if the actuator experiences the aforementioned latent fault, the control unit will continuously send commands due to the lack of expected feedback (pressure change), causing the system to enter an "idling" state. This not only wastes energy but also fails to achieve the regulation function and may accelerate equipment wear. This solution introduces a pressure criterion P... 出 <P 设 Joint verification was conducted, and after confirming that the control command (increasing the opening to increase pressure) had been issued excessively but the actual effect did not meet expectations, a fault was decisively identified and the system was switched to a reliable emergency valve opening mode. This is equivalent to setting up an independent monitoring mechanism for the delicate pulse control system. Once a "serious mismatch between control command and feedback result" is detected, control is immediately taken over, avoiding ineffective operation and risk accumulation of the system under fault conditions.

[0140] The emergency procedure S1-6 for solenoid valve failure directs the final handling of solenoid valve failure to "emergency valve opening S2-1", i.e., switching to full-bore mode. This decision ensures that even if the most complex fine-tuning subsystem completely fails, the basic flow function of the pipeline system can be guaranteed, avoiding the risk of the entire pipeline being accidentally cut off due to the failure of a single solenoid valve, minimizing the impact of local failures, and maintaining the continuity of the main pipeline network.

[0141] An emergency switching and voltage regulation control system based on pulse control is provided, which applies the above-mentioned emergency switching and voltage regulation control method based on pulse control.

[0142] The flow and pressure regulation control system includes a main valve 10, an electric ball valve A20, an electric ball valve B30, a lower chamber water inlet solenoid valve 41, an upper chamber water inlet solenoid valve 42, an upper chamber water outlet solenoid valve 43, a lower chamber water outlet solenoid valve 44, and a control unit.

[0143] The main valve 10 is provided with an inlet chamber 101, an outlet chamber 102 and a pressure chamber 103. The pressure chamber 103 is divided into an upper chamber 1031 and a lower chamber 1032 by a valve core assembly. The valve core assembly is used to block and open the connection between the inlet chamber 101 and the outlet chamber 102.

[0144] The water inlet chamber 101 is connected to the upper chamber 1031 in sequence through the upper chamber water inlet solenoid valve 42 and the electric ball valve A20. The upper chamber 1031 is also connected to the outside atmosphere in sequence through the electric ball valve A20 and the upper chamber water outlet solenoid valve 43.

[0145] The water inlet chamber 101 is connected to the lower chamber 1032 in sequence through the lower chamber water inlet solenoid valve 41 and the electric ball valve B30. The lower chamber 1032 is also connected to the outside atmosphere in sequence through the electric ball valve B30 and the lower chamber water outlet solenoid valve 44.

[0146] The control unit is communicatively connected to the electric ball valve A20, electric ball valve B30, lower chamber water inlet solenoid valve 41, upper chamber water inlet solenoid valve 42, upper chamber water outlet solenoid valve 43 and lower chamber water outlet solenoid valve 44 respectively.

[0147] This pulse-controlled emergency switching and voltage regulation control system implements the aforementioned diverse and intelligent control methods into a highly integrated hardware architecture, resulting in significant synergistic effects.

[0148] This system ingeniously integrates electric ball valves (20, 30) for rapid, high-flow-rate switching and pulse solenoid valves (41, 42, 43, 44) for high-precision control into the same fluid loop, and coordinates them under a unified control unit. This architecture enables a single valve system to intelligently switch between an instantaneous "emergency switching mode" (based on electric ball valves) and a smooth and precise "pulse regulation mode" (based on pulse solenoid valves) according to operating conditions. Thus, a single hardware device meets all the needs from disaster emergency response to daily precise regulation, greatly improving the functional density and economic efficiency of the equipment.

[0149] Furthermore, the unique design of the internal pressure chamber 103 of the main valve 10, especially the independent and precise controllability of its upper chamber 1031 and lower chamber 1032, is key to eliminating residual pressure and achieving full-bore lifting of the valve core assembly. Through precise commands from the control unit to the electric ball valves (20, 30) and solenoid valves (41, 42, 43, 44), it can be ensured that when full opening is required, the pressure in the upper chamber 1031 is completely released (vented to the atmosphere), and the pressure in the lower chamber 1032 is effectively established, thus forming a powerful net opening force. This hardware system provides a reliable physical basis for the core effects mentioned above, such as "eliminating residual pressure" and "pulse-based precise control," fundamentally solving the inherent defects of traditional valves in terms of limited flow capacity and insufficient control precision.

[0150] This control system supports multiple emergency response methods (such as power outages, pipe bursts, abnormal water quality, and solenoid valve malfunctions). The control unit continuously monitors external signals from the power supply, flow meter, pressure sensor, and water quality probe, enabling it to drive the reliable actuators (a combination of electric ball valves and solenoid valves) to perform the safest backup actions. This architecture, consisting of a "brain (control unit) + neural network (sensor communication) + multiple actuators (valve combinations)," constitutes a system with deep defensive capabilities. Even if a subsystem (such as the pulse regulation system) fails, redundant emergency pathways (such as emergency switching pathways) can immediately take over, ensuring the system can return to a preset safe state under any abnormal operating conditions, greatly protecting the safety of the pipeline network operation.

[0151] As the receiver of all signals and the issuer of all commands, the control unit naturally serves as the interface for data interaction between the valve and the upper-level monitoring platform (such as a SCADA system) or the Internet of Things cloud platform. This enables all valve functions, including fine adjustment, status monitoring, and all emergency responses, to be remotely monitored, remotely set, and automatically triggered, thus completely eliminating reliance on manual on-site operation and fully meeting the high-level requirements of smart water management for equipment digitization, networking, and intelligence.

[0152] In summary, the current and voltage regulation system of this invention is not a simple aggregation of functional units, but a deeply integrated and collaborative organic whole. Through an innovative hardware architecture, it solidifies diverse intelligent control methods into stable and reliable physical functions, ultimately providing a comprehensive solution that achieves a leapfrog improvement in flow capacity, control performance, safety protection, and intelligence level.

[0153] Furthermore, it also includes an inlet pressure sensor 51, an outlet pressure sensor 52, a heating tape, a temperature sensor, a flow meter, and a UPS backup power supply.

[0154] By integrating key peripheral components such as inlet pressure sensor, outlet pressure sensor, heating cable, temperature sensor, flow meter, and UPS backup power supply, a fully functional sensing and execution system has been constructed, providing a solid data foundation and energy guarantee for the emergency switching flow and pressure regulation control method and system based on pulse control.

[0155] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. An emergency switching current and voltage regulation control system based on pulse control, characterized in that: It includes a main valve (10), an electric ball valve A (20), an electric ball valve B (30), a lower chamber inlet solenoid valve (41), an upper chamber inlet solenoid valve (42), an upper chamber outlet solenoid valve (43), a lower chamber outlet solenoid valve (44), and a control unit; The main valve (10) is provided with an inlet chamber (101), an outlet chamber (102) and a pressure chamber (103). The pressure chamber (103) is divided into an upper chamber (1031) and a lower chamber (1032) by a valve core assembly. The valve core assembly is used to block and open the connection between the inlet chamber (101) and the outlet chamber (102). The electric ball valve A (20) includes a first connector A (21), a second connector A (22), a third connector A (23), and a fourth connector A (24). The first connector A (21) is connected to the water inlet chamber (101), the second connector A (22) is connected to the upper chamber water inlet solenoid valve (42) and the upper chamber water outlet solenoid valve (43), the third connector A (23) is connected to the outside atmosphere, and the fourth connector A (24) is connected to the upper chamber (1031). The electric ball valve B (30) includes a first connector B (31), a second connector B (32), a third connector B (33) and a fourth connector B (34). The first connector B (31) is connected to the lower chamber (1032), the second connector B (32) is connected to the outside atmosphere, the third connector B (33) is connected to the lower chamber inlet solenoid valve (41) and the lower chamber outlet solenoid valve (44), and the fourth connector B (34) is connected to the outlet chamber (102). The inlet chamber (101) is connected to the upper chamber (1031) in sequence through the upper chamber inlet solenoid valve (42) and the electric ball valve A (20). The upper chamber (1031) is also connected to the outside atmosphere in sequence through the electric ball valve A (20) and the upper chamber outlet solenoid valve (43). The water inlet chamber (101) is connected to the lower chamber (1032) in sequence through the lower chamber water inlet solenoid valve (41) and the electric ball valve B (30). The lower chamber (1032) is also connected to the outside atmosphere in sequence through the electric ball valve B (30) and the lower chamber water outlet solenoid valve (44). The control unit is communicatively connected to the electric ball valve A (20), electric ball valve B (30), lower chamber water inlet solenoid valve (41), upper chamber water inlet solenoid valve (42), upper chamber water outlet solenoid valve (43) and lower chamber water outlet solenoid valve (44).

2. The emergency switching current and voltage regulation control system based on pulse control according to claim 1, characterized in that: It also includes an inlet pressure sensor (51), an outlet pressure sensor (52), a heat tracing cable, a temperature sensor, a flow meter, and a UPS backup power supply.

3. A control method for an emergency switching current and voltage regulation control system based on pulse control as described in claim 2, characterized in that: The control method includes the following steps: Step S1: Receive signal, determine emergency situation, identify emergency valve opening or emergency valve closing, and send corresponding emergency control command; Step S2: Execute emergency valve opening control step S2-1 or emergency valve closing control step S2-2; The emergency valve opening control step S2-1 includes: Step S2-1-1: Send an emergency valve opening control command to the electric ball valve B (30). The first connector B (31) and the fourth connector B (34) of the electric ball valve B (30) are connected. Water flows from the outlet chamber (102) through the electric ball valve B (30) into the lower chamber (1032) of the pressure chamber (103). Step S2-1-2: Send an emergency valve opening control command to electric ball valve A (20). The third connector A (23) and the fourth connector A (24) of electric ball valve A (20) are connected. The water in the upper chamber (1031) of the pressure chamber (103) is discharged to the atmosphere through electric ball valve A (20). This causes the diaphragm in the pressure chamber (103) of the valve to rise, and the valve opens; Emergency valve closure control step S2-2 includes: Step S2-2-1: Send an emergency valve closing control command to the electric ball valve A (20). The first connector A (21) and the fourth connector A (24) of the electric ball valve A (20) are connected. Water flows from the inlet chamber (101) through the electric ball valve A (20) into the upper chamber (1031) of the pressure chamber (103). Step S2-2-2: Send an emergency valve closing control command to the electric ball valve B (30). The first connector B (31) and the second connector B (32) of the electric ball valve B (30) are connected. The water in the lower chamber (1032) of the pressure chamber (103) is discharged to the atmosphere through the electric ball valve B (30). This causes the diaphragm in the pressure chamber (103) of the valve to descend, thus closing the valve.

4. The control method according to claim 3, characterized in that: Step S1 also includes a power outage emergency method S1-1, which includes the following steps: Step S1-1-1: Identify the power failure signal, determine if it is a power failure emergency situation, and identify it as an emergency valve opening; Step S1-1-2: Send control commands to the UPS backup power supply. The UPS backup power supply supplies power to electric ball valve A (20) and electric ball valve B (30) and executes step S2-1.

5. The control method according to claim 3, characterized in that: Step S1 also includes an emergency method S1-2 for water pressure acquisition failure, which includes the following steps: Step S1-2-1: Obtain the set water pressure value Pset, the water pressure value Pin on the inlet side, and the water pressure value Pout on the outlet side; Step S1-2-2: If P_out < P_set, increase the valve opening; if P_out > P_set, decrease the valve opening; if P_out > P_in, it is determined to be an emergency situation of water pressure acquisition failure, identified as emergency valve opening, and step S2-1 is executed.

6. The control method according to claim 3, characterized in that: Step S1 also includes low-temperature emergency methods S1-3, which include the following steps: Step S1-3-1: Obtain the activation temperature T1 of the heating cable, the deactivation temperature T2 of the heating cable, and the valve internal temperature Tt, where T1 < T2 and T1 > 0℃; Step S1-3-2: If Tt=T1, start the heat tracing cable; if Tt≥T2, stop the heat tracing cable; if Tt<T1, it is determined to be a low temperature emergency, identified as an emergency valve opening, and step S2-1 is executed.

7. The control method according to claim 3, characterized in that: Step S1 also includes emergency water quality monitoring methods S1-4, which include the following steps: Step S1-4-1: Obtain the qualified water quality standards and the current water quality status; Step S1-4-2: If the current water quality does not meet the qualified water quality standard, it is judged as an emergency situation for water quality monitoring, identified as an emergency valve closure, and step S2-2 is executed.

8. The control method according to claim 3, characterized in that: Step S1 also includes emergency measures for pipe bursts, S1-5, which include the following steps: Step S1-5-1: Obtain the average flow rate F0 and real-time flow rate F1 on the export side; Step S1-5-2: If F1 > 1.5F0, it is determined to be an emergency situation of pipe burst, identified as emergency valve closure, and step S2-2 is executed.

9. The control method according to claim 3, characterized in that, This includes a pulse control method Q, which includes an opening increase method Q1 and an opening decrease method Q2. The opening increase method Q1 includes the following steps: Step Q1-1: Send control commands to electric ball valve B (30) and lower chamber inlet solenoid valve (41). The first connector B (31) and the third connector B (33) of electric ball valve B (30) are connected. The inlet chamber (101) is connected to the lower chamber (1032) of pressure chamber (103) through the lower chamber inlet solenoid valve (41) and electric ball valve B (30). Step Q1-2: Send control commands to electric ball valve A (20) and upper chamber outlet solenoid valve (43). The fourth connector A (24) and the second connector A (22) of electric ball valve A (20) are connected. The upper chamber (1031) of pressure chamber (103) is connected to the atmosphere through electric ball valve A (20) and upper chamber outlet solenoid valve (43). Step Q1-3: Send pulse control signals to the lower chamber inlet solenoid valve (41) and the upper chamber outlet solenoid valve (43). The lower chamber inlet solenoid valve (41) performs pulse-type water intake to the lower chamber (1032), and the upper chamber outlet solenoid valve (43) performs pulse-type drainage to the upper chamber (1031). This allows for pulse-based control to increase the valve opening. The opening reduction method Q2 includes the following steps: Step Q2-1: Send control commands to electric ball valve A (20) and upper chamber water inlet solenoid valve (42). The fourth connector A (24) and the second connector A (22) of electric ball valve A (20) are connected. The water inlet chamber (101) is connected to the upper chamber (1031) of pressure chamber (103) through upper chamber water inlet solenoid valve (42) and electric ball valve A (20). Step Q2-2: Send control commands to electric ball valve B (30) and lower chamber outlet solenoid valve (44). The first connector B (31) and the third connector B (33) of electric ball valve B (30) are connected. The lower chamber (1032) of pressure chamber (103) is connected to the atmosphere through electric ball valve B (30) and lower chamber outlet solenoid valve (44). Step Q2-3: Send pulse control signals to the upper chamber water inlet solenoid valve (42) and the lower chamber water outlet solenoid valve (44). The upper chamber water inlet solenoid valve (42) performs pulse water inlet to the upper chamber (1031), and the lower chamber water outlet solenoid valve (44) performs pulse drainage to the lower chamber (1032). This allows for pulse-based control to reduce the valve opening.

10. The control method according to claim 9, characterized in that: Step S1 also includes emergency response method S1-6 for solenoid valve failure, which includes the following steps: Step S1-6-1: Obtain the total count Ctotal of pulse signals received by the solenoid valve during the process of the valve changing from a fully open valve state to a fully closed valve state or from a fully closed valve state to a fully open valve state; Obtain the pulse signal count C1 of the solenoid valve after each control command is received; Obtain the set water pressure value Pset and the water pressure value Pout at the outlet; Step S1-6-2: If C1 > C_total and P_out < P_set, then it is determined to be an emergency situation of solenoid valve failure, identified as emergency valve opening, and step S2-1 is executed.

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