A linear multi-stage valve-closing system and control method for reducing water hammer effect

Abstract

This invention discloses a linear multi-stage valve-closing system and control method for reducing water hammer effects. The valve-closing system includes a controller module, a pipeline pressure monitoring module installed on the pipeline system, a valve-closing actuator module, a one-stage linear valve-closing module, a two-stage linear valve-closing module, a fault diagnosis module, a flow monitoring module, and a user interface module. The pipeline pressure monitoring module, fault diagnosis module, user interface module, flow monitoring module, and valve-closing actuator module are all connected to the controller module. By setting up the one-stage and two-stage linear valve-closing modules, this invention can select an appropriate valve-closing mode according to the actual operating conditions of the pipeline and different valve-closing strategies to meet the water hammer suppression requirements under different pipeline pressure environments, effectively reducing the water hammer effect in the pipeline system. Furthermore, through two-stage fast closing and slow closing control, it reduces pressure shocks to the valves and pipelines, improving the safety of the pipeline system.

Description

Technical Field

[0001] This invention relates to the field of valve shut-off system technology, and in particular to a linear multi-stage valve shut-off system and control method for reducing water hammer effect. Background Technology

[0002] In fluid transport pipelines, rapid valve closure is often accompanied by severe water hammer, causing drastic pressure fluctuations in the pipeline system and easily leading to pipeline rupture, valve damage, and other system failures. Current valve closure technology is mainly a single-stage linear valve closure, which is difficult to effectively control water hammer and has a complex structure and high maintenance cost. A single fast or slow closing method often cannot simultaneously achieve flow control and water hammer suppression. Therefore, this application proposes a linear multi-stage valve closure system and control method to reduce the water hammer effect. Summary of the Invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a linear multi-stage valve closing system and control method to reduce water hammer effect.

[0004] This invention proposes a linear multi-stage valve closing system to reduce water hammer effect, comprising a controller module, a pipeline pressure monitoring module installed on the pipeline system, a valve closing actuator module, a first-stage linear valve closing module, a second-stage linear valve closing module, a fault diagnosis module, a flow monitoring module, and a user interface module. The pipeline pressure monitoring module, fault diagnosis module, user interface module, flow monitoring module, and valve closing actuator module are all connected to the controller module. The first-stage linear valve closing module and the second-stage linear valve closing module are both connected to the valve closing actuator module. Both the first-stage linear valve closing module and the second-stage linear valve closing module are installed on the pipeline system.

[0005] Preferably, the controller module is used to control the operation of the valve closing system, and selects an appropriate valve closing mode for control based on the pipeline pressure and flow information collected in real time.

[0006] The pipeline pressure monitoring module is used to monitor pressure changes within the pipeline and provide timely feedback to the controller module.

[0007] The flow monitoring module is used to monitor changes in water flow in the pipeline and provide timely feedback to the controller module.

[0008] Preferably, the fault diagnosis module is used to monitor and diagnose the working status of the pipeline system and provide timely feedback to the controller module, and to issue an alarm when a fault is detected; the user interface module is used to provide operators with a visual interface for monitoring the system's operating status, setting parameters, and performing operation control.

[0009] The valve closing actuator module is used to control the opening and closing of the first-stage linear valve closing module and the second-stage linear valve closing module according to the instructions of the controller module, so as to realize different valve closing modes. The first-stage linear valve closing module is used to realize linear valve closing control and can be adjusted according to actual needs. The second-stage linear valve closing module includes two modes: 80% fast closing and 60% fast closing, which are used to more precisely control the opening and closing speed of the valve to reduce the generation of water hammer effect.

[0010] In the 80% fast-closing mode, the valve quickly closes to 80% of its opening and then closes the remaining 20% ​​at a slower linear speed. This mode is suitable for systems with significant water hammer impact, rapidly reducing most of the flow while simultaneously closing slowly to reduce residual pressure fluctuations. In the 60% fast-closing module, the valve quickly closes to 60% of its opening and then closes the remaining 40% at a slower linear speed. This mode is suitable for systems that require a longer slow-closing process, resulting in more stable pressure fluctuation control.

[0011] This invention also proposes a control method for a linear multi-stage valve-closing system to reduce water hammer effect, comprising the following steps:

[0012] S1: The pipeline pressure monitoring module continuously monitors the pressure changes of the pipeline system, while the flow monitoring module monitors the flow of the pipeline system and transmits the monitored real-time data to the controller module.

[0013] S2: After receiving the pressure and flow information of the pipeline system, the controller module analyzes the pressure and flow data and selects the appropriate valve closing mode according to the preset pressure control strategy.

[0014] S3: When one-stage linear valve closing control is required, the controller module sends a command to the valve closing actuator module, and the valve closing actuator module controls the one-stage linear valve closing module to open or close according to the linear valve closing mode.

[0015] S4: When two-stage linear valve closing control is required, the controller module selects either 80% fast closing or 60% fast closing mode according to the specific situation and sends the corresponding command to the valve closing actuator module.

[0016] S5: The valve closing actuator module controls the two-stage linear valve closing module to open and close the valve according to the instructions of the controller module, so as to realize the corresponding valve closing mode.

[0017] S6: The controller module continuously monitors the pressure and flow changes of the pipeline system and adjusts the valve closing control strategy in real time to maintain the stable operation of the pipeline system and reduce the occurrence of water hammer effect.

[0018] Preferably, the specific logical steps of S2 are as follows:

[0019] S201: The controller module analyzes the received pressure data, including real-time pressure values, pressure fluctuations, and pressure change rates. By comparing these data with the set pressure thresholds, the controller module can determine whether the pipeline system is in normal operation and whether there are any abnormal pressure conditions, including sudden increases or decreases in pressure.

[0020] S202: The controller module analyzes the received flow data, including real-time flow value, flow fluctuation and flow change rate. By analyzing the flow data, the controller can understand the flow situation of the pipeline system, and at the same time, combine the flow threshold to determine whether there is excessive or insufficient flow, and whether it is necessary to adjust the valve closing mode to control the flow change.

[0021] S203: Based on the analysis results of S201 and S202, the controller module comprehensively considers the pressure and flow of the pipeline system and, in conjunction with the preset control strategy, determines whether valve closure control is required to adjust the operating status of the pipeline system.

[0022] Preferably, in step S203, the preset control strategy is as follows:

[0023] (1) When the pressure fluctuation of the pipeline system is small and the pressure change is relatively stable, the one-stage linear valve closing mode is selected. This mode has a relatively smooth opening and closing speed when closing the valve, which is suitable for scenarios where the pressure requirements are not particularly strict and can effectively reduce the generation of water hammer effect.

[0024] (2) When the pressure of the pipeline system suddenly increases or decreases and the pressure fluctuation is relatively violent, select the 80% fast closing mode. This mode will quickly close or open the valve to quickly adjust the pressure of the pipeline system, prevent the pressure from exceeding the safe range, and reduce the generation of water hammer effect.

[0025] (3) When it is necessary to control the pressure fluctuation of the pipeline system more quickly and precisely, the 60% fast shut-off mode can be selected. This mode is faster than the 80% fast shut-off mode, but it is also more likely to cause larger pressure changes.

[0026] (4) The flow rate fluctuation is small, and it can maintain a one-stage linear valve closing mode;

[0027] (5) If the flow rate fluctuates greatly, you can choose the 80% quick-off or 60% quick-off mode for rapid adjustment.

[0028] Preferably, in step S5, the program code used to send the corresponding instruction to the valve closing actuator module is as follows:

[0029] # Define a function to send commands to the valve closing actuator module

[0030] def send_command_to_actuator(command):

[0031] #Here is the code for sending commands to the valve closing actuator module via the communication interface.

[0032] #Simulating the process of sending commands

[0033] print("Sending command to actuator:",command)

[0034] #Main Program

[0035] def main():

[0036] #Choose either 80% or 60% fast-track mode depending on the specific situation.

[0037] mode="80% quick close" # This can be adjusted to "60% quick close" etc., depending on the actual situation.

[0038] #Create the corresponding control commands

[0039] if mode=="80%quick close":

[0040] command="Close valve at 80% quick speed"

[0041] elif mode=="60% quick close":

[0042] command="Close valve at 60% quick speed"

[0043] #Send commands to the valve closing actuator module

[0044] send_command_to_actuator(command)

[0045] #Execute the main program

[0046] main().

[0047] Preferably, when the valve closing actuator module controls the first-stage linear valve closing module and the second-stage linear valve closing module, the valve closing actuator module sends an open or close signal to the actuator element, and the actuator element controls the first-stage linear valve closing module or the second-stage linear valve closing module to open or close.

[0048] Preferably, in step S6, while the controller module continuously monitors the pressure and flow rate of the pipeline system, the fault diagnosis module continuously monitors the operating status of the pipeline system. The specific monitoring steps of the fault diagnosis module are as follows:

[0049] S601: The fault diagnosis module first needs to obtain real-time data from the controller module, including the pressure and flow of the pipeline system, information, and the working status and electrical signals of the valve actuator;

[0050] S602: The fault diagnosis module processes and analyzes the received data, compares the actual data with the set threshold or working range, and checks whether the data is within the normal range.

[0051] S603: Based on the data analysis results, the fault diagnosis module will identify possible fault types, such as abnormal pipeline system pressure and abnormal valve actuator.

[0052] S604: When the fault diagnosis module detects a potential fault, it will automatically trigger the alarm mechanism and send an alarm signal to the controller module. At the same time, it will generate detailed information to indicate the specific fault type and location, and notify the operator through the user interface module so that the fault can be handled in a timely manner.

[0053] Compared with existing technologies, the beneficial effects of this invention are:

[0054] This invention, through the setting of a one-stage linear valve closing module and a two-stage linear valve closing module, can select an appropriate valve closing mode according to the actual operation of the pipeline and different valve closing strategies, so as to meet the water hammer suppression requirements under different pipeline pressure environments, effectively reduce the water hammer effect in the pipeline system, and reduce the pressure impact on valves and pipelines through two-stage fast closing and slow closing control, thereby improving the safety of the pipeline system. Attached Figure Description

[0055] Figure 1 This is a block diagram of a linear multi-stage valve-closing system for reducing water hammer effect proposed in this invention.

[0056] Figure 2 This is a flowchart of a control method for a linear multi-stage valve-closing system to reduce water hammer effect, as proposed in this invention. Detailed Implementation

[0057] The present invention will be further explained below with reference to specific embodiments.

[0058] Example

[0059] Reference Figure 1-2This embodiment proposes a linear multi-stage valve closing system to reduce water hammer effect, including a controller module, a pipeline pressure monitoring module installed on the pipeline system, a valve closing actuator module, a first-stage linear valve closing module, a second-stage linear valve closing module, a fault diagnosis module, a flow monitoring module, and a user interface module. The pipeline pressure monitoring module, fault diagnosis module, user interface module, flow monitoring module, and valve closing actuator module are all connected to the controller module. The first-stage linear valve closing module and the second-stage linear valve closing module are both connected to the valve closing actuator module. The first-stage linear valve closing module and the second-stage linear valve closing module are both installed on the pipeline system.

[0060] The controller module is used to control the operation of the valve closing system. Based on the pipeline pressure and flow information collected in real time, it selects the appropriate valve closing mode for control.

[0061] The pipeline pressure monitoring module is used to monitor pressure changes within the pipeline and provide timely feedback to the controller module.

[0062] The flow monitoring module is used to monitor changes in water flow in the pipeline and provide timely feedback to the controller module;

[0063] The fault diagnosis module is used to monitor and diagnose the working status of the pipeline system and provide timely feedback to the controller module. When a fault is detected, an alarm is triggered in time. The user interface module provides operators with a visual interface for monitoring the system's operating status, setting parameters, and performing operational control.

[0064] The valve closing actuator module is used to control the opening and closing of the one-stage linear valve closing module and the two-stage linear valve closing module according to the instructions of the controller module, so as to realize different valve closing modes. The one-stage linear valve closing module is used to realize linear valve closing control and can be adjusted according to actual needs. The two-stage linear valve closing module includes two modes: 80% fast closing and 60% fast closing, which are used to more precisely control the opening and closing speed of the valve to reduce the generation of water hammer effect.

[0065] In the 80% fast-closing mode, the valve quickly closes to 80% of its opening and then closes the remaining 20% ​​at a slower linear speed. This mode is suitable for systems with significant water hammer impact, rapidly reducing most of the flow while simultaneously closing slowly to reduce residual pressure fluctuations. In the 60% fast-closing module, the valve quickly closes to 60% of its opening and then closes the remaining 40% at a slower linear speed. This mode is suitable for systems that require a longer slow-closing process, resulting in more stable pressure fluctuation control.

[0066] This embodiment also proposes a control method for a linear multi-stage valve-closing system to reduce water hammer effect, including the following steps:

[0067] S1: The pipeline pressure monitoring module continuously monitors the pressure changes of the pipeline system, while the flow monitoring module monitors the flow of the pipeline system and transmits the monitored real-time data to the controller module.

[0068] S2: After receiving the pressure and flow information of the pipeline system, the controller module analyzes the pressure and flow data and selects the appropriate valve closing mode according to the preset pressure control strategy.

[0069] The specific logical steps are as follows:

[0070] S201: The controller module analyzes the received pressure data, including real-time pressure values, pressure fluctuations, and pressure change rates. By comparing these data with the set pressure thresholds, the controller module can determine whether the pipeline system is in normal operation and whether there are any abnormal pressure conditions, including sudden increases or decreases in pressure.

[0071] S202: The controller module analyzes the received flow data, including real-time flow value, flow fluctuation and flow change rate. By analyzing the flow data, the controller can understand the flow situation of the pipeline system, and at the same time, combine the flow threshold to determine whether there is excessive or insufficient flow, and whether it is necessary to adjust the valve closing mode to control the flow change.

[0072] S203: Based on the analysis results of S201 and S202, the controller module comprehensively considers the pressure and flow of the pipeline system and, in conjunction with the preset control strategy, determines whether valve closure control is required to adjust the operating status of the pipeline system.

[0073] Its preset control strategy is as follows:

[0074] (1) When the pressure fluctuation of the pipeline system is small and the pressure change is relatively stable, the one-stage linear valve closing mode is selected. This mode has a relatively smooth opening and closing speed when closing the valve, which is suitable for scenarios where the pressure requirements are not particularly strict and can effectively reduce the generation of water hammer effect.

[0075] (2) When the pressure of the pipeline system suddenly increases or decreases and the pressure fluctuation is relatively violent, select the 80% fast closing mode. This mode will quickly close or open the valve to quickly adjust the pressure of the pipeline system, prevent the pressure from exceeding the safe range, and reduce the generation of water hammer effect.

[0076] (3) When it is necessary to control the pressure fluctuation of the pipeline system more quickly and precisely, the 60% fast shut-off mode can be selected. This mode is faster than the 80% fast shut-off mode, but it is also more likely to cause larger pressure changes.

[0077] (4) The flow rate fluctuation is small, and it can maintain a one-stage linear valve closing mode;

[0078] (5) If the flow rate fluctuates greatly, you can choose the 80% quick-off or 60% quick-off mode for rapid adjustment.

[0079] S3: When one-stage linear valve closing control is required, the controller module sends a command to the valve closing actuator module, and the valve closing actuator module controls the one-stage linear valve closing module to open or close according to the linear valve closing mode.

[0080] S4: When two-stage linear valve closing control is required, the controller module selects either 80% fast closing or 60% fast closing mode according to the specific situation and sends the corresponding command to the valve closing actuator module.

[0081] S5: The valve closing actuator module controls the two-stage linear valve closing module to open and close the valve according to the instructions of the controller module, so as to realize the corresponding valve closing mode.

[0082] The program code used to send the corresponding command to the valve closing actuator module is as follows:

[0083] # Define a function to send commands to the valve closing actuator module

[0084] def send_command_to_actuator(command):

[0085] #Here is the code for sending commands to the valve closing actuator module via the communication interface.

[0086] #Simulating the process of sending commands

[0087] print("Sending command to actuator:",command)

[0088] #Main Program

[0089] def main():

[0090] #Choose either 80% or 60% fast-track mode depending on the specific situation.

[0091] mode="80% quick close" # This can be adjusted to "60% quick close" etc., depending on the actual situation.

[0092] #Create the corresponding control commands

[0093] if mode=="80%quick close":

[0094] command="Close valve at 80% quick speed"

[0095] elif mode=="60% quick close":

[0096] command="Close valve at 60% quick speed"

[0097] #Send commands to the valve closing actuator module

[0098] send_command_to_actuator(command)

[0099] #Execute the main program

[0100] main();

[0101] In addition, when the valve closing actuator module controls the first-stage linear valve closing module and the second-stage linear valve closing module, the valve closing actuator module will send an open or close signal to the actuator element, and the actuator element will control the first-stage linear valve closing module or the second-stage linear valve closing module to open or close.

[0102] S6: The controller module continuously monitors the pressure and flow changes of the pipeline system and adjusts the valve closing control strategy in real time to maintain the stable operation of the pipeline system and reduce the generation of water hammer effect.

[0103] While the controller module continuously monitors the pressure and flow of the pipeline system, the fault diagnosis module continuously monitors the operating status of the pipeline system. The specific monitoring steps of the fault diagnosis module are as follows:

[0104] S601: The fault diagnosis module first needs to obtain real-time data from the controller module, including the pressure and flow of the pipeline system, information, and the working status and electrical signals of the valve actuator;

[0105] S602: The fault diagnosis module processes and analyzes the received data, compares the actual data with the set threshold or working range, and checks whether the data is within the normal range.

[0106] S603: Based on the data analysis results, the fault diagnosis module will identify possible fault types, such as abnormal pipeline system pressure and abnormal valve actuator.

[0107] S604: When the fault diagnosis module detects a potential fault, it will automatically trigger the alarm mechanism and send an alarm signal to the controller module. At the same time, it will generate detailed information to indicate the specific fault type and location, and notify the operator through the user interface module so that the fault can be handled in a timely manner.

[0108] The detailed information includes the type of fault (overvoltage, undervoltage, actuator failure), the time of the fault, pressure and flow data, and recommended emergency handling methods.

[0109] This embodiment, through the setting of a one-stage linear valve closing module and a two-stage linear valve closing module, can select an appropriate valve closing mode according to the actual operation of the pipeline and different valve closing strategies, so as to meet the water hammer suppression requirements under different pipeline pressure environments, effectively reduce the water hammer effect in the pipeline system, and reduce the pressure impact on valves and pipelines through two-stage fast closing and slow closing control, thereby improving the safety of the pipeline system.

[0110] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A control method for a linear multi-stage valve-closing system to reduce water hammer effect, characterized in that, Includes the following steps: S1: The pipeline pressure monitoring module continuously monitors the pressure changes of the pipeline system, while the flow monitoring module monitors the flow of the pipeline system and transmits the monitored real-time data to the controller module. S2: After receiving the pressure and flow information of the pipeline system, the controller module analyzes the pressure and flow data and selects the appropriate valve closing mode according to the preset control strategy. S3: When one-stage linear valve closing control is required, the controller module sends a command to the valve closing actuator module, and the valve closing actuator module controls the one-stage linear valve closing module to open or close according to the linear valve closing mode. S4: When two-stage linear valve closing control is required, the controller module selects either 80% fast closing or 60% fast closing mode according to the specific situation and sends the corresponding command to the valve closing actuator module. S5: The valve closing actuator module controls the two-stage linear valve closing module to open and close the valve according to the instructions of the controller module, so as to realize the corresponding valve closing mode. S6: The controller module continuously monitors the pressure and flow changes of the pipeline system and adjusts the valve closing control strategy in real time to maintain the stable operation of the pipeline system and reduce the water hammer effect. The preset control strategy is as follows: (1) When the pressure fluctuation of the pipeline system is small and the pressure change is relatively stable, select the one-stage linear valve shut-off mode. (2) When the pressure of the pipeline system suddenly increases or decreases, and the pressure fluctuation is relatively violent, select the 80% fast shut-off or 60% fast shut-off mode; (3) The flow rate fluctuates relatively little, maintaining a one-stage linear valve-closing mode; (4) If the flow rate fluctuates greatly, select the 80% quick-off or 60% quick-off mode for rapid adjustment.

2. The control method for a linear multi-stage valve-closing system to reduce water hammer effect according to claim 1, characterized in that, The specific logical steps of S2 are as follows: S201: The controller module analyzes the received pressure data, including real-time pressure values, pressure fluctuations, and pressure change rates. By comparing these data with the set pressure thresholds, the controller module can determine whether the pipeline system is in normal operation and whether there are any abnormal pressure conditions, including sudden increases or decreases in pressure. S202: The controller module analyzes the received flow data, including real-time flow value, flow fluctuation and flow change rate. By analyzing the flow data, the controller can understand the flow situation of the pipeline system, and at the same time, combine the flow threshold to determine whether there is excessive or insufficient flow, and whether it is necessary to adjust the valve closing mode to control the flow change. S203: Based on the analysis results of S201 and S202, the controller module comprehensively considers the pressure and flow of the pipeline system and, in conjunction with the preset control strategy, determines whether valve closure control is required to adjust the operating status of the pipeline system.

3. The control method for a linear multi-stage valve-closing system to reduce water hammer effect according to claim 1, characterized in that, When the valve closing actuator module controls the first-stage linear valve closing module and the second-stage linear valve closing module, the valve closing actuator module sends an open or close signal to the actuator element, and the actuator element controls the first-stage linear valve closing module or the second-stage linear valve closing module to open or close.

4. The control method for a linear multi-stage valve-closing system to reduce water hammer effect according to claim 1, characterized in that, In step S6, while the controller module continuously monitors the pressure and flow of the pipeline system, the fault diagnosis module continuously monitors the operating status of the pipeline system. The specific monitoring steps of the fault diagnosis module are as follows: S601: The fault diagnosis module first needs to obtain real-time data from the controller module, including the pressure and flow of the pipeline system, information, and the working status and electrical signals of the valve actuator; S602: The fault diagnosis module processes and analyzes the received data, compares the actual data with the set threshold or working range, and checks whether the data is within the normal range. S603: Based on the data analysis results, the fault diagnosis module will identify possible fault types, such as abnormal pipeline system pressure and abnormal valve actuator. S604: When the fault diagnosis module detects a potential fault, it will automatically trigger the alarm mechanism and send an alarm signal to the controller module. At the same time, it will generate detailed information to indicate the specific fault type and location, and notify the operator through the user interface module so that the fault can be handled in a timely manner.

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