Pressure controller and control method for water supply and drainage system

Abstract

The present application discloses a pressure controller and a control method for a water supply and drainage system, and relates to the technical field of emergency protection devices. The method comprises: obtaining monitoring data of each pressure controller; obtaining the pressure value gradient of each pressure controller based on the monitoring data; obtaining the position of the abnormal area of ​​the conveying pipeline based on the pressure value gradient; obtaining a first pressure controller based on the position of the abnormal area; adjusting the first pressure controller so that the maximum pressure value of the abnormal area position is less than or equal to the standard pressure threshold. The present application can determine the position where turbulence or eddy current occurs inside the conveying pipeline by setting a pressure controller that can measure the pressure and position of the conveying pipeline, and then adjust the pressure of the abnormal area of ​​the conveying pipeline based on the corresponding pressure controller to avoid damage to the conveying pipeline due to excessive pressure in the abnormal area.

Description

Technical Field

[0001] The present application relates to the technical field of emergency protection devices, and specifically to a pressure controller and a control method for a water supply and drainage system. Background Art

[0002] A pressure controller is a device used to monitor and control system pressure. It can maintain or adjust specific pressure levels and is widely used in industries such as industry, manufacturing, aerospace, chemical engineering, and oil and gas. Common types of pressure controllers include electronic pressure controllers. Electronic pressure controllers use sensors to convert pressure signals into electrical signals, which are then controlled and adjusted through electronic circuits. This type of controller can achieve higher-precision control and is typically used in situations requiring precise pressure control, such as laboratories, precision equipment, and fluid control systems. Among them, pressure controllers with positioning functions can not only regulate pressure in the system, but can also be used to determine the location or status of pressure control points. Through the positioning function, the pressure controller can ensure that the pressure regulation effect is accurately applied to the required part of the system. This is especially important for complex fluid systems or multi-point pressure regulation systems.

[0003] In water supply and drainage systems, pressure controllers monitor system pressure in real time to prevent pipe ruptures caused by excessive pressure or water shortages caused by insufficient pressure. They also combine parameters such as liquid level and flow at various monitoring points for comprehensive control. For example, they can adjust pump start and stop operations based on the water tank level. Pressure controllers rely on pressure signals for control and regulation. Abnormal pressure fluctuations within pipelines caused by factors such as flow rate, pipe diameter, and pipe height can easily lead to errors in pressure controller control and regulation, impacting the normal operation of the water supply and drainage system. Summary of the Invention

[0004] The purpose of this application is to provide a pressure controller and a control method for a water supply and drainage system, so as to solve the problem of how to avoid the occurrence of excessive transportation pressure inside the pipeline caused by turbulence or eddy currents.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] In a first aspect, the present application proposes a pressure control method for a water supply and drainage system, which is applied to a delivery pipeline; the delivery pipeline is pre-installed with multiple pressure controllers; the control method includes:

[0007] Acquiring monitoring data of each pressure controller; the monitoring data includes the position of each pressure controller in the delivery pipeline and the pressure value monitored by each pressure controller;

[0008] Based on the monitoring data, a pressure value gradient of each pressure controller is obtained; the pressure value gradient is at least used to represent the change value of the pressure value monitored by the corresponding pressure controller over time;

[0009] Based on the gradient of each pressure value, the position of the abnormal area of ​​the conveying pipeline is obtained; the abnormal area is the area where turbulence or eddy current occurs in the conveying pipeline;

[0010] Based on the position of the abnormal area, a first pressure controller is obtained; the first pressure controller is the pressure controller closest to the abnormal area among the pressure controllers;

[0011] The first pressure controller is adjusted so that the maximum pressure value at the abnormal area is less than or equal to a standard pressure threshold; the standard pressure threshold is preset.

[0012] As a specific solution in the technical solution of the present application, the step of obtaining the pressure value gradient of each pressure controller based on the monitoring data includes:

[0013] Based on each pressure controller, a second pressure controller is obtained; the second pressure controller is any one of the pressure controllers;

[0014] Based on the monitoring data, obtaining a time series pressure value of the second pressure controller;

[0015] Based on the time series pressure values, a plurality of first difference values ​​are obtained, wherein the first difference value is a difference between two pressure values ​​adjacent in the time series;

[0016] Based on each first difference, obtaining a first evaluation parameter;

[0017] Based on the first evaluation parameter, a pressure value gradient of the second pressure controller is obtained.

[0018] As a specific solution in the technical solution of this application, obtaining the first evaluation parameter based on each first difference includes:

[0019] Based on each first difference, a first average value is obtained; the first average value is an average value of the absolute values ​​of each first difference;

[0020] The first average value is recorded as a first evaluation parameter.

[0021] As a specific solution in the technical solution of the present application, obtaining the pressure value gradient of the second pressure controller based on the first evaluation parameter includes:

[0022] Based on each first difference value, a plurality of second difference values ​​are obtained, wherein the second difference value is a difference between two first difference values ​​that are adjacent in time sequence;

[0023] Based on each second difference, a second evaluation parameter is obtained; the expression of the second evaluation parameter is:

[0024]

[0025] in, Indicates the The second evaluation parameter corresponding to each monitoring point; represents the first difference at time t; represents the first difference at time t-1; represents the exponential function; Indicates the absolute value; Indicates the The number of time series pressure values ​​at each monitoring point;

[0026] The first evaluation parameter and the second evaluation parameter are weighted by a preset weight coefficient to obtain the pressure value gradient of the second pressure controller.

[0027] As a specific solution in the technical solution of the present application, obtaining the position of the abnormal area of ​​the transmission pipeline based on the gradient of each pressure value includes:

[0028] Sorting all pressure value gradients from large to small, and using controllers corresponding to a preset number of pressure value gradients that are ranked high in the sorting results as third pressure controllers;

[0029] Inputting the monitoring data of each third pressure controller into a prediction model; the prediction model adopts an autoregressive difference moving average prediction model;

[0030] Based on the prediction model, obtaining the pressure prediction value at each position of the transmission pipeline;

[0031] Based on each pressure prediction value, the abnormal area position of the conveying pipeline is obtained; the abnormal area position is any position in the conveying pipeline where the pressure prediction value is greater than the pressure value monitored by the closest pressure controller.

[0032] As a specific solution in the technical solution of the present application, obtaining the pressure prediction value at each position of the transmission pipeline based on the prediction model includes:

[0033] Based on each of the third pressure controllers, a fourth pressure controller and a fifth pressure controller are obtained; the fourth pressure controller and the fifth pressure controller are any two adjacent pressure controllers among each of the third pressure controllers;

[0034] Based on the relationship between the fourth pressure controller and the fifth pressure controller, obtaining a preset number of prediction points;

[0035] Based on the prediction model, the pressure prediction value of each prediction point is obtained.

[0036] As a specific solution in the technical solution of the present application, adjusting the first pressure controller so that the maximum pressure value at the abnormal area is less than or equal to the standard pressure threshold includes:

[0037] Obtaining the maximum pressure value at the abnormal area;

[0038] If the maximum pressure value is less than or equal to the standard pressure threshold, the first pressure controller is not adjusted;

[0039] If the maximum pressure value is greater than the standard pressure threshold, obtaining a pressure difference value based on the maximum pressure value and the standard pressure threshold;

[0040] Based on the pressure difference, the first pressure controller is adjusted to complete the adjustment by reducing the pressure difference by the maximum pressure value controlled by the first pressure controller.

[0041] As a specific solution in the technical solution of the present application, the delivery pipeline includes a first straight pipe section and a second straight pipe section, one end of the second straight pipe section is connected to the middle of the first straight pipe section, and the connection between the second straight pipe section and the first straight pipe section forms a connection point; the delivery pipeline is preset with multiple pressure controllers, including:

[0042] Selecting adjacent first and second layout points in the first straight pipe section; the connection point is located between the first and second layout points, the straight-line distance between the connection point and the first layout point is a first distance; the straight-line distance between the connection point and the second layout point is a second distance; the first distance is equal to the second distance;

[0043] A third layout point is selected in the second straight pipe section; the straight-line distance between the connection point and the third layout point is a third distance; and the third distance is equal to the first distance;

[0044] Pressure controllers are respectively provided at the first layout point, the second layout point and the third layout point.

[0045] As a specific solution in the technical solution of the present application, the delivery pipeline further includes a third straight pipe section, one end of which is connected to the first straight pipe section via a bend; the delivery pipeline is pre-set with multiple pressure controllers and further includes:

[0046] Selecting a fourth layout point in the first straight pipe section;

[0047] Selecting a fifth layout point on the curved pipe; the fifth layout point is located in the middle of the curved pipe;

[0048] A sixth layout point is selected in the third straight pipe section; the fourth layout point, the fifth layout point and the sixth layout point are three layout points arranged in sequence;

[0049] Pressure controllers are respectively provided at the fourth layout point, the fifth layout point and the sixth layout point.

[0050] In a second aspect, the present application proposes a pressure controller for a water supply and drainage system, which is applied to a delivery pipeline; the delivery pipeline is pre-installed with a plurality of the pressure controllers; and includes:

[0051] A reading module is used to obtain monitoring data of each pressure controller; the monitoring data includes the position of each pressure controller in the delivery pipeline and the pressure value monitored by each pressure controller;

[0052] A processing module, configured to obtain a pressure value gradient of each pressure controller based on the monitoring data; the pressure value gradient is at least used to represent a change in the pressure value monitored by the corresponding pressure controller over time;

[0053] and, based on the gradient of each pressure value, obtaining the position of an abnormal region of the conveying pipeline; the abnormal region is a region in the conveying pipeline where turbulence or eddy current occurs;

[0054] And, based on the position of the abnormal area, a first pressure controller is obtained; the first pressure controller is the pressure controller closest to the abnormal area among the pressure controllers;

[0055] And, adjusting the first pressure controller so that the maximum pressure value at the abnormal area position is less than or equal to a standard pressure threshold; the standard pressure threshold is preset.

[0056] As a specific solution in the technical solution of the present application, the reading module is further used to obtain a second pressure controller based on each pressure controller; the second pressure controller is any one of the pressure controllers;

[0057] and, based on the monitoring data, obtaining a time-series pressure value of the second pressure controller;

[0058] The processing module is further configured to obtain a plurality of first difference values ​​based on the time series pressure values; the first difference value is a difference between two pressure values ​​adjacent in time series;

[0059] and, based on each first difference, obtaining a first evaluation parameter;

[0060] And, based on the first evaluation parameter, a pressure value gradient of the second pressure controller is obtained.

[0061] As a specific solution in the technical solution of the present application, the processing module is further used to obtain a first average value based on each first difference; the first average value is the average value of the absolute values ​​of each first difference;

[0062] And, based on the first average value, a first evaluation parameter is obtained.

[0063] As a specific solution in the technical solution of the present application, the processing module is further configured to obtain a plurality of second differences based on each first difference; the second difference is a difference between two first differences that are adjacent in time sequence;

[0064] and, based on each second difference, obtaining a second evaluation parameter;

[0065] And, based on the first evaluation parameter and the second evaluation parameter, a pressure value gradient of the second pressure controller is obtained.

[0066] As a specific solution in the technical solution of the present application, the reading module is further used to obtain multiple third pressure controllers based on the pressure value gradients; the third pressure controllers are controllers with the highest pressure value gradients among the pressure controllers;

[0067] The processing module is further used to input the monitoring data of each third pressure controller into the prediction model; the prediction model is pre-acquired;

[0068] and, based on the prediction model, obtaining a predicted pressure value at each location of the delivery pipeline;

[0069] Furthermore, based on each pressure prediction value, the abnormal area position of the delivery pipeline is obtained; the abnormal area position is any position in the delivery pipeline where the pressure prediction value is greater than the pressure value monitored by the closest pressure controller.

[0070] As a specific solution in the technical solution of the present application, the reading module is further used to obtain a fourth pressure controller and a fifth pressure controller based on each third pressure controller; the fourth pressure controller and the fifth pressure controller are any two adjacent pressure controllers among each third pressure controller;

[0071] The processing module is further configured to obtain a preset number of prediction points based on the relationship between the fourth pressure controller and the fifth pressure controller;

[0072] And, based on the prediction model, the pressure prediction value of each prediction point is obtained.

[0073] As a specific solution in the technical solution of the present application, the reading module is further used to obtain the maximum pressure value at the position of the abnormal area;

[0074] The processing module is further configured to: if the maximum pressure value is less than or equal to the standard pressure threshold, not adjust the first pressure controller;

[0075] and, if the maximum pressure value is greater than the standard pressure threshold, obtaining a pressure difference value based on the maximum pressure value and the standard pressure threshold;

[0076] The control module is further configured to adjust the first pressure controller based on the pressure difference.

[0077] As a specific solution in the technical solution of the present application, the delivery pipeline includes a first straight pipe section and a second straight pipe section, one end of the second straight pipe section is connected to the middle of the first straight pipe section, and the connection between the second straight pipe section and the first straight pipe section forms a connection point; the delivery pipeline is preset with multiple pressure controllers, including:

[0078] Selecting adjacent first and second layout points in the first straight pipe section; the connection point is located between the first and second layout points, the straight-line distance between the connection point and the first layout point is a first distance; the straight-line distance between the connection point and the second layout point is a second distance; the first distance is equal to the second distance;

[0079] A third layout point is selected in the second straight pipe section; the straight-line distance between the connection point and the third layout point is a third distance; and the third distance is equal to the first distance;

[0080] Pressure controllers are respectively provided at the first layout point, the second layout point and the third layout point.

[0081] As a specific solution in the technical solution of the present application, the delivery pipeline further includes a third straight pipe section, one end of which is connected to the first straight pipe section via a bend; the delivery pipeline is pre-set with multiple pressure controllers and further includes:

[0082] Selecting a fourth layout point in the first straight pipe section;

[0083] Selecting a fifth layout point on the curved pipe; the fifth layout point is located in the middle of the curved pipe;

[0084] A sixth layout point is selected in the third straight pipe section; the fourth layout point, the fifth layout point and the sixth layout point are three layout points arranged in sequence;

[0085] Pressure controllers are respectively provided at the fourth layout point, the fifth layout point and the sixth layout point.

[0086] Compared with the prior art, the present invention has the following advantages:

[0087] The present application sets a pressure controller capable of measuring the pressure and position of the delivery pipeline, thereby being able to determine the location where turbulence or eddy currents occur inside the delivery pipeline, and then adjust the pressure of the abnormal area of ​​the delivery pipeline based on the corresponding pressure controller, so as to avoid damage caused by excessive pressure in the abnormal area of ​​the delivery pipeline, thereby affecting the normal delivery of water in the water supply and drainage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 A flow chart of a pressure control method for a water supply and drainage system proposed in an embodiment of the present application;

[0089] Figure 2 This is a schematic structural diagram of a pressure controller for a water supply and drainage system proposed in an embodiment of the present application;

[0090] Figure 3 This is a schematic diagram of the layout position of a pressure controller in a delivery pipeline proposed in an embodiment of the present application.

[0091] In the figure: 1. First straight pipe section; 2. Second straight pipe section; 3. Third straight pipe section; 4. Bend; 11. First layout point; 12. Second layout point; 13. Seventh layout point; 14. Eighth layout point; 15. Fourth layout point; 16. Fifth layout point; 17. Connection point; 18. Prediction point; 21. Third layout point; 31. Sixth layout point. DETAILED DESCRIPTION

[0092] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0093] The terms "first," "second," and the like in the description of the embodiments of the present application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. For example, the first pressure controller and the second pressure controller described below are different pressure controllers. It should be understood that the pressure controllers used in this manner can be interchanged where appropriate so that the embodiments described herein can be implemented in an order other than that shown or described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to these processes, methods, products, or devices. The division of modules in the embodiments of the present application is merely a logical division. In actual implementation, there may be other division methods. For example, multiple modules may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection between modules may be electrical or other similar forms, which are not limited in the embodiments of the present application. Moreover, the modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed into multiple circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiment of the present application.

[0094] To address the technical problem, as discussed in the background art, that turbulence or eddies in the water flow during water supply and drainage processes can easily cause abnormal pressure signals within pipelines, leading to errors in pressure controller control and adjustment. This application proposes a pressure control method for a water supply and drainage system. This control method is applied to a delivery pipeline pre-installed with multiple pressure controllers. The pressure controllers are used to measure and control the delivery pressure within the delivery pipeline. In this embodiment, the pressure controller can be a commonly available controller capable of measuring and controlling the delivery pressure within the delivery pipeline, or a combination of a pressure sensor and a controller. For example, in this embodiment, a MEMS pressure sensor based on the piezoresistive effect can be selected, which offers high accuracy and fast response. The measurement range can be set to 0-10 bar based on the maximum operating pressure within the pipeline during water supply and drainage. The sensor accuracy can be ±0.1%FS or higher to ensure reliable measurement results. The sensor response time can be within 10 ms to capture instantaneous pressure fluctuations. In this embodiment, a PID controller can be selected for real-time pressure adjustment. Alternatively, a controller with analog output (4-20mA or 0-10V) can be selected for compatibility with pressure regulating devices such as pressure regulating valves.

[0095] In the embodiment of the present application, there is no special restriction on the layout position of each pressure controller on the delivery pipeline. That is to say, in the embodiment of the present application, the pressure controller can be arranged at multiple positions of the delivery pipeline. In order to be able to obtain the accurate position of the abnormal area below, in one embodiment of the present application, the layout of each pressure controller is as follows Figure 3 As shown, the delivery pipeline includes a first straight pipe section 1 and a second straight pipe section 2. One end of the second straight pipe section 2 is connected to the middle portion of the first straight pipe section 1, and the connection between the second straight pipe section 2 and the first straight pipe section 1 forms a connection point 17. The delivery pipeline is pre-configured with multiple pressure controllers, and the configuration method includes steps S610 to S630.

[0096] Step S610: Select the adjacent first layout point 11 and the second layout point 12 in the first straight pipe section 1; the connection point 17 is located between the first layout point 11 and the second layout point 12, and the straight-line distance between the connection point 17 and the first layout point 11 is the first distance; the straight-line distance between the connection point 17 and the second layout point 12 is the second distance; the first distance is equal to the second distance.

[0097] It should be noted that at the branch point of the pipeline (i.e., connection point 17), during the water supply and drainage process, the diversion of the air flow in the pipeline will also affect the pressure, which can easily lead to the formation of turbulence or vortex. Therefore, it is necessary to arrange pressure controllers before and after the connection point 17.

[0098] Step S620: Select a third layout point 21 in the second straight pipe section 2; the straight-line distance between the connection point 17 and the third layout point 21 is a third distance; and the third distance is equal to the first distance.

[0099] As can be seen from the foregoing, turbulence or eddy currents are easily formed at the branch point, so it is also necessary to set a pressure controller at a suitable position of the second straight pipe section 2.

[0100] Step S630: Install pressure controllers at the first layout point 11 , the second layout point 12 , and the third layout point 21 , respectively.

[0101] It should be noted that setting a pressure controller at a preset position in the delivery pipeline is a mature technology and will not be described in detail here.

[0102] In another embodiment of the present application, Figure 3 As shown, the delivery pipeline also includes a third straight pipe section 3, one end of which is connected to the first straight pipe section 1 through a bend 4; the delivery pipeline is preset with multiple pressure controllers, and also includes steps S640 to S670.

[0103] Step S640: Selecting a fourth layout point 15 in the first straight pipe segment 1.

[0104] It should be understood that at the bend in the pipe, the direction of the water flow changes, which easily leads to the formation of turbulence or eddy currents. Therefore, pressure controllers need to be arranged before and after the bend (ie, bend 4).

[0105] Step S650 : Select a fifth layout point 16 on the curved pipe 4 ; the fifth layout point 16 is located in the middle of the curved pipe 4 .

[0106] It should be noted that the pressure change in the middle of the elbow 4 is most obvious, so a pressure controller needs to be provided.

[0107] Step S660: Select the sixth layout point 31 in the third straight pipe section 3; the fourth layout point 15, the fifth layout point 16 and the sixth layout point 31 are three layout points set in sequence.

[0108] It should be understood that at the bend in the pipe, the direction of the water flow changes, which easily leads to the formation of turbulence or eddy currents. Therefore, pressure controllers need to be arranged before and after the bend (ie, bend 4).

[0109] Step S670: Install pressure controllers at the fourth layout point 15 , the fifth layout point 16 , and the sixth layout point 31 , respectively.

[0110] It should be noted that setting a pressure controller at a preset position in the delivery pipeline is a mature technology and will not be described in detail here.

[0111] It should be understood that, in the embodiments of the present application, step S610 and step S670 do not represent the order in which the steps are to be executed; they are merely used to distinguish different steps. For example, in the embodiments of the present application, step S610 may be executed first, followed by step S620; step S620 may be executed first, followed by step S610; or step S610 and step S620 may be executed simultaneously. The same applies to the sequence numbers of other steps in the embodiments of the present application, and will not be described in detail later.

[0112] In this embodiment, if Figure 1 As shown, the pressure control method for a water supply and drainage system includes steps S100 to S500.

[0113] Step S100: Acquire monitoring data of each pressure controller.

[0114] It should be understood that, in the embodiment of the present application, the monitoring data includes the position of each pressure controller in the delivery pipeline and the pressure value monitored by each pressure controller.

[0115] Step S200: Based on the monitoring data, the pressure value gradient of each pressure controller is obtained.

[0116] It should be noted that during the real-time monitoring of pipeline pressure, turbulence and eddies may occur due to gas diversion and water flow diversion, resulting in gradual changes or fluctuations in the pressure value, which in turn causes fluctuations in the monitored pressure value. Therefore, the embodiments of the present application determine the gradual changes in the pressure values ​​in different areas of the pipeline and, based on the gradual changes, determine the areas in the pipeline where eddies occur. Therefore, in this embodiment, the pressure gradual changes are at least used to characterize the changes in the pressure value monitored by the corresponding pressure controller over time.

[0117] In embodiments of the present application, any method can be used to obtain the pressure value gradient of each pressure controller based on the monitoring data, as long as the pressure value gradient can represent the change in the pressure value monitored by the corresponding pressure controller over time. For example, in one embodiment of the present application, step S200, obtaining the pressure value gradient of each pressure controller based on the monitoring data, includes steps S210 to S250.

[0118] Step S210: Based on each pressure controller, obtain a second pressure controller.

[0119] It should be noted that, in this embodiment, it is necessary to obtain the pressure value gradient of each pressure controller in the delivery pipeline. That is, in this embodiment, the second pressure controller is any one of the pressure controllers.

[0120] Step S220: Based on the monitoring data, obtain the time series pressure value of the second pressure controller.

[0121] It should be noted that retrieving the time series pressure value of each pressure controller from the monitoring data is a well-known technique and will not be described in detail here. The time series pressure value of the second pressure controller is as follows:

[0122]

[0123] in, Indicates the A sequence of pressure values ​​at each pipeline monitoring point (i.e., the layout points mentioned above) updated over time; Indicates time The pipeline pressure value at the detection point is displayed.

[0124] Step S230: obtaining a plurality of first difference values ​​based on the time-series pressure values.

[0125] As can be seen from the foregoing, the pressure value of each pipeline monitoring point will show a certain degree of fluctuation or gradualness in the time series. This is due to the different movement trends of the water flow in different areas during water supply and drainage. For example, in certain areas of the pipeline (such as bends, flow change points, branches, etc.), the water flow shows a vortex trend, so the pressure value of the pressure monitoring point near the area will show a gradual fluctuation trend. That is to say, in this embodiment, the first difference can be the difference between two adjacent pressure values ​​in the time series. Specifically, its calculation formula is as follows:

[0126]

[0127] in, represents the first difference at time t; Indicates time The pipeline pressure value at the detection point is obtained; Indicates time The pipeline pressure value at the detection point is displayed.

[0128] Step S240: Obtain a first evaluation parameter based on each first difference.

[0129] It should be understood that other areas of the delivery pipeline near the vortex region all exhibit a certain degree of gradual change, and the closer to the vortex region, the greater the degree of gradual change. In other words, in the embodiments of this application, the maximum value of each first difference can be used as the first evaluation parameter. In other words, the larger the maximum value of the first difference, the closer the pressure controller corresponding to that first difference is to the vortex region of the delivery pipeline.

[0130] In one embodiment of the present application, step S240, obtaining the first evaluation parameter based on each first difference, includes step S241 and step S242.

[0131] Step S241: Obtain a first average value based on each first difference value.

[0132] In this embodiment, the first average value is the average value of the absolute values ​​of the first differences. Specifically, the calculation formula of the first average value is as follows:

[0133]

[0134] in, Indicates the The first average value of the monitoring points; Indicates the The number of time series pressure values ​​at each monitoring point, is a positive integer greater than or equal to 2; Indicates finding the absolute value; Indicates time The pipeline pressure value at the detection point is obtained; Indicates time The pipeline pressure value at the detection point is displayed.

[0135] Step S242: Based on the first average value, obtain a first evaluation parameter.

[0136] In the embodiments of the present application, the first average value can be used as the first evaluation parameter. It is readily understood that a larger first average value indicates that the pressure controller corresponding to that first average value is closer to the vortex region of the delivery pipeline. In other words, the location of the vortex region in the delivery pipeline can be subsequently determined based on the magnitude of each first average value.

[0137] Step S250: Based on the first evaluation parameter, obtain the pressure value gradient of the second pressure controller.

[0138] It should be noted that in this embodiment, the first evaluation parameter can be used as the pressure value gradient of the second pressure controller. That is, the position of the vortex area in the conveying pipeline is determined by the magnitude of the first evaluation parameter.

[0139] As mentioned above, there are various reasons for pressure changes in the delivery pipeline, such as turbulence or eddies in the delivery pipeline, or unstable output pressure from the delivery pump. If the delivery pipeline experiences pressure fluctuations due to unstable delivery pump pressure, it is generally difficult to adjust using a pressure controller, which means that the delivery pump needs to be repaired. If the delivery pipeline experiences pressure fluctuations due to turbulence or eddies, the pressure controller can be used to adjust the pressure in the delivery pipeline to below the rated pressure. It should be understood that if turbulence or eddies occur in the delivery pipeline, the pressure value in the delivery pipeline generally fluctuates regularly; if the delivery pump in the delivery pipeline fails, the pressure value in the delivery pipeline generally fluctuates irregularly (for example, sometimes high, sometimes low).

[0140] In order to distinguish the cause of the pressure change in the delivery pipeline, in one embodiment of the present application, step S250, based on the first evaluation parameter, obtains the pressure value gradient of the second pressure controller, including steps S251 to S253.

[0141] Step S251: Based on each first difference value, obtain multiple second difference values.

[0142] It should be noted that, as mentioned above, the first difference is the difference between two pressure values ​​that are adjacent in time sequence. In this embodiment, the second difference is the difference between two first difference values ​​that are adjacent in time sequence.

[0143] Step S252: Obtain a second evaluation parameter based on each second difference.

[0144] As can be seen from the foregoing, if the pressure values ​​in the delivery pipeline generally fluctuate regularly, then the second differences will also be relatively close. That is, for a delivery pipeline in an eddy flow region, the pressure values ​​at different times will increase and decrease regularly over time. In one embodiment of the present application, the calculation formula for the second evaluation parameter is as follows:

[0145]

[0146] in, Indicates the The second evaluation parameter corresponding to each monitoring point; Represents the first difference at time t (the monitoring points); Represents the first difference at time t-1 (the monitoring points); represents the exponential function; Indicates the absolute value; Indicates the The number of time series pressure values ​​at each monitoring point, is a positive integer greater than or equal to 3.

[0147] It is easy to understand that in this embodiment, the larger the absolute value of the second difference, the smaller the second evaluation parameter obtained; and the smaller the absolute value of the second difference, the larger the second evaluation parameter obtained. In other words, the more regular the pressure fluctuation in the pipeline, the larger the second evaluation parameter.

[0148] Step S253: Based on the first evaluation parameter and the second evaluation parameter, obtain the pressure value gradient of the second pressure controller.

[0149] It should be noted that, as previously mentioned, in this embodiment, the first evaluation parameter is used to assess the magnitude of pressure fluctuations; the larger the pressure fluctuation, the more necessary adjustment is. The second evaluation parameter is used to assess the regularity of pressure fluctuations; the more regular the pressure fluctuations (i.e., the more likely the pressure fluctuations are caused by turbulence or eddies), the more necessary adjustment is, and the easier it is to perform.

[0150] In an embodiment of the present application, the pressure value gradient of the second pressure controller can be obtained based on the first evaluation parameter and the second evaluation parameter in any manner. For example, in one embodiment of the present application, the sum of the first evaluation parameter and the second evaluation parameter can be used as the pressure value gradient of the second pressure controller. In another embodiment of the present application, the pressure value gradient of the second pressure controller is calculated as follows:

[0151]

[0152] in, Indicates the Gradual change of pressure value at each monitoring point; Indicates the weight coefficient when summing features, which can be set according to needs, for example, set to 0.4 or 0.5; Indicates the The first average value of the monitoring points (i.e. the first evaluation parameter); Indicates the The second evaluation parameter corresponding to each monitoring point.

[0153] Step S300: Based on the gradients of the pressure values, the position of the abnormal area of ​​the transmission pipeline is obtained.

[0154] In an embodiment of the present application, the abnormal region is an area in the delivery pipeline where turbulence or eddy currents occur. In an embodiment of the present application, the position corresponding to the pressure controller with the largest pressure gradient can be used as the location of the abnormal region in the delivery pipeline. In order to accurately obtain the location of the abnormal region in the delivery pipeline, in one embodiment of the present application, step S300, based on the various pressure gradients, obtains the location of the abnormal region in the delivery pipeline, including steps S310 to S340.

[0155] Step S310: Based on the gradients of the respective pressure values, a plurality of third pressure controllers are obtained.

[0156] As can be seen from the previous article, the closer a pressure controller is to an area in the pipeline where turbulence or eddies occur, the larger the pressure gradient corresponding to that pressure controller should be. If the pressure gradients corresponding to several adjacent pressure controllers are all large, it means that the area in the pipeline where turbulence or eddies occur is likely located between several pressure controllers. In order to accurately determine the location of the abnormal area in the pipeline, all pressure gradients are sorted from large to small, and the controllers corresponding to the preset number of pressure gradients that rank at the top of the sorting results are all used as the third pressure controller.

[0157] In the embodiment of the present application, the top ranking refers to a number of third pressure controllers with the highest pressure value gradient, for example, the top five third pressure controllers with the highest pressure value gradient, or the top six third pressure controllers with the highest pressure value gradient.

[0158] Step S320: input the monitoring data of each third pressure controller into the prediction model.

[0159] It should be understood that in the embodiments of the present application, the prediction model is pre-acquired. In this embodiment, any prediction model that can predict the relationship between pressure and position in the pipeline can be used. For example, an autoregressive integrated moving average (ARIMA) prediction model can be used. The ARIMA prediction model is a powerful tool commonly used in time series data analysis and prediction. It combines three techniques: autoregression (AR), differencing (I), and moving average (MA) to model and predict time series data. It can better handle many characteristics of time series data, such as seasonality, trend, and periodicity, and can fit the data with fewer parameters.

[0160] In this embodiment, the time-series pressure values ​​of each third pressure controller are used as the input of the ARIMA prediction model, and the time-series pressure values ​​of each prediction point are used as the output of the ARIMA prediction model. In other words, the ARIMA prediction model simulates output data based on the input data. This is a mature technology and will not be described in detail here.

[0161] Step S330: Based on the prediction model, obtain the pressure prediction value of each position of the transmission pipeline.

[0162] It should be understood that obtaining the pressure prediction value at each location of the transmission pipeline based on the prediction model is a mature technology and will not be elaborated here.

[0163] In order to reduce the computational complexity of the prediction model, in one embodiment of the present application, step S330 obtains the pressure prediction value of each position of the delivery pipeline based on the prediction model, including steps S331 to S333.

[0164] Step S331: Based on each third pressure controller, obtain a fourth pressure controller and a fifth pressure controller.

[0165] It should be understood that the fourth pressure controller and the fifth pressure controller are any two adjacent pressure controllers among the third pressure controllers.

[0166] Step S332: obtaining a preset number of prediction points based on the relationship between the fourth pressure controller and the fifth pressure controller.

[0167] In the embodiment of the present application, the preset number can be three, four or five, etc., or any other desired number. Figure 3 As shown, assuming that the fourth pressure controller is the pressure controller corresponding to the second layout point 12, the fifth pressure controller is the pressure controller corresponding to the seventh layout point 13, and the preset number is 3; then Figure 3As shown, three prediction points 18 are selected on the conveying pipeline between the second layout point 12 and the seventh layout point 13. These three prediction points 18 can be randomly distributed on the conveying pipeline between the second layout point 12 and the seventh layout point 13, or can be evenly distributed on the conveying pipeline between the second layout point 12 and the seventh layout point 13.

[0168] Step S333: Based on the prediction model, obtain the pressure prediction value of each prediction point.

[0169] It should be noted that, in this embodiment, a limited number of prediction points are selected, which can effectively reduce the computational complexity of the prediction model compared to predicting countless prediction points.

[0170] Step S340: Based on each pressure prediction value, the location of the abnormal area of ​​the transmission pipeline is obtained.

[0171] As can be seen from the foregoing, the location corresponding to the maximum pressure value is likely to be the location where turbulence or eddy current occurs. In other words, in this embodiment, the location of the region corresponding to the maximum pressure prediction value among the various pressure prediction values ​​can be used as the abnormal region location.

[0172] Step S400: Acquire a first pressure controller based on the position of the abnormal area.

[0173] It should be noted that the first pressure controller is the pressure controller closest to the abnormal region among the pressure controllers. In this embodiment, since the first pressure controller is the pressure controller closest to the abnormal region, it is convenient to subsequently adjust the pressure in the abnormal region through the first pressure controller, thereby preventing the pressure in the abnormal region of the pipeline from exceeding the rated pressure.

[0174] Step S500: adjusting the first pressure controller so that the maximum pressure value at the abnormal area is less than or equal to the standard pressure threshold.

[0175] It should be understood that in this embodiment, the standard pressure threshold (ie, the rated pressure mentioned above) is preset.

[0176] It should be noted that the lifespan of a pressure controller is inversely proportional to its adjustment frequency. That is, the higher the adjustment frequency, the shorter the lifespan. To improve the lifespan of a pressure controller, in one embodiment of the present application, step S500 involves adjusting the first pressure controller so that the maximum pressure value at the abnormal region is less than or equal to the standard pressure threshold, including steps S510 to S540.

[0177] Step S510: Obtain the maximum pressure value at the abnormal area.

[0178] It should be clear that if turbulence or eddy currents occur at the abnormal area, the pressure value at the abnormal area will fluctuate regularly. In other words, if the maximum pressure value does not exceed the standard pressure threshold value during the pressure value fluctuations at the abnormal area, it means that even if turbulence or eddy currents occur at the abnormal area, the delivery pipeline at that location is safe. If the maximum pressure value exceeds the standard pressure threshold value during the pressure value fluctuations at the abnormal area, it means that the turbulence or eddy currents have the risk of damaging the delivery pipeline, that is, the delivery pressure at the abnormal area needs to be adjusted. As can be seen from the foregoing, the time series pressure value at the abnormal area can be obtained based on the prediction model. If the time series pressure value at the abnormal area can be obtained, the maximum pressure value at the abnormal area can also be obtained, which will not be elaborated here.

[0179] Step S520: If the maximum pressure value is less than or equal to the standard pressure threshold, the first pressure controller is not adjusted.

[0180] It is easy to understand that sometimes, although turbulence or eddy currents are formed inside the conveying pipeline, their impact on the conveying pipeline is small. In this case, the pressure in the abnormal area of ​​the conveying pipeline can be adjusted without using a pressure controller, thereby increasing the service life of the pressure controller.

[0181] Step S530: If the maximum pressure value is greater than the standard pressure threshold, a pressure difference value is obtained based on the maximum pressure value and the standard pressure threshold.

[0182] It should be noted that obtaining the difference between two values ​​is a mature technology and will not be described in detail here.

[0183] Step S540: Adjust the first pressure controller based on the pressure difference.

[0184] It is easy to understand that when there is local resistance in the pipeline, such as valves and elbows, the increase in water flow will lead to an increase in resistance loss, thus requiring a higher input pressure to ensure the normal delivery of water; when water flows from a large-diameter pipeline to a small-diameter pipeline, the reduction in pipe diameter will increase the flow rate, and the inertia of water flow will also cause pressure fluctuations. At this time, in order to prevent pressure changes from causing overpressure and pipe burst, the pressure should be appropriately reduced.

[0185] The pipeline pressure is directly proportional to the flow rate in the pipeline. If the water flow rate in the pipeline increases, the resistance increases, and the pressure in the pipeline is greater; if the water flow rate in the pipeline decreases, the resistance decreases, and the pressure in the pipeline is smaller.

[0186] In this embodiment, along the flow direction of water in the delivery pipeline, if the first pressure controller is before the abnormal area position, it is necessary to reduce the amount of water delivered to the abnormal area position through the first pressure controller; if the first pressure controller is after the abnormal area position, it is necessary to increase the amount of water delivered to the abnormal area position through the first pressure controller.

[0187] Specifically, such as Figure 3 As shown, assuming that in the first straight pipe section 1, the direction of water flow is as follows Figure 3 As shown in the direction U (flow direction of water flow in the delivery pipeline), the abnormal area is located between the second layout point 12 and the seventh layout point 13, and the abnormal area is closer to the second layout point 12. The pressure controller provided on the second layout point 12 is the first pressure controller. That is, the first pressure controller is before the abnormal area (along the flow direction of water flow in the delivery pipeline). At this time, in order to reduce the pipeline pressure of the delivery pipeline between the second layout point 12 and the seventh layout point 13, the pressure regulating valve of the first pressure controller can be used to control the valve core displacement, reduce the valve opening, and reduce the amount of water flow delivered to the abnormal area, so as to achieve that even if turbulence or eddy current occurs in the abnormal area, the maximum pressure in the abnormal area will not exceed the standard pressure threshold. Similarly, if Figure 3 As shown, assuming that in the first straight pipe section 1, the direction of water flow is as follows Figure 3 As shown in the direction U (the flow direction of the water in the delivery pipeline), the abnormal area is located between the second layout point 12 and the seventh layout point 13, and the abnormal area is closer to the seventh layout point 13. Therefore, the pressure controller installed at the seventh layout point 13 is the first pressure controller. That is, the first pressure controller is located after the abnormal area (along the flow direction of the water in the delivery pipeline). To reduce the pipeline pressure between the second layout point 12 and the seventh layout point 13, the pressure regulating valve of the first pressure controller can be used to control the displacement of the valve core, increase the valve opening, and increase the amount of water output to the abnormal area. This ensures that even if turbulence or eddy currents occur in the abnormal area, the maximum pressure in the abnormal area will not exceed the standard pressure threshold. It should be noted that valve displacement can be achieved by rotating the handwheel or the yolk preload adjustment knob. Preferably, in the embodiment of the present application, the valve core displacement is controlled by rotating the handwheel, and the specific control method is: rotating the handwheel clockwise, the valve core moves downward, the flow area decreases, and the flow rate decreases; rotating the handwheel counterclockwise, the valve core moves upward, the flow area increases, and the flow rate increases.

[0188] It should be clear that the pressure control method for the water supply and drainage system proposed in this application can determine the location where turbulence or eddy current occurs inside the delivery pipeline by setting a pressure controller that can measure the pressure and position of the delivery pipeline, and then adjust the pressure of the abnormal area of ​​the delivery pipeline based on the corresponding pressure controller to avoid damage to the delivery pipeline due to excessive pressure in the abnormal area.

[0189] After introducing the pressure control method for the water supply and drainage system proposed in the embodiment of the present application, the pressure controller for the water supply and drainage system proposed in the embodiment of the present application is introduced below. The pressure controller is applied to the delivery pipeline; the delivery pipeline is preset with multiple pressure controllers; Figure 2 As shown, the pressure controller includes:

[0190] A reading module is used to obtain monitoring data of each pressure controller; the monitoring data includes the position of each pressure controller in the delivery pipeline and the pressure value monitored by each pressure controller;

[0191] A processing module is used to obtain a pressure value gradient of each pressure controller based on the monitoring data; the pressure value gradient is at least used to represent the change value of the pressure value monitored by the corresponding pressure controller over time;

[0192] And, based on the gradient of each pressure value, obtaining the position of an abnormal area of ​​the conveying pipeline; the abnormal area is the area where turbulence or eddy current occurs in the conveying pipeline;

[0193] And, based on the position of the abnormal area, a first pressure controller is obtained; the first pressure controller is the pressure controller closest to the abnormal area among the pressure controllers;

[0194] The control module is used to adjust the first pressure controller so that the maximum pressure value at the abnormal area is less than or equal to a standard pressure threshold; the standard pressure threshold is pre-set.

[0195] As a specific embodiment of the present application, the reading module is further configured to obtain a second pressure controller based on each pressure controller; the second pressure controller is any one of the pressure controllers;

[0196] and, based on the monitoring data, obtaining a time series pressure value of the second pressure controller;

[0197] The processing module is further configured to obtain a plurality of first difference values ​​based on the time series pressure values; the first difference value is the difference between two pressure values ​​adjacent in the time series;

[0198] and, based on each first difference, obtaining a first evaluation parameter;

[0199] And, based on the first evaluation parameter, a pressure value gradient of the second pressure controller is obtained.

[0200] As a specific embodiment of the present application, the processing module is further configured to obtain a first average value based on each first difference value; the first average value is an average value of the absolute values ​​of each first difference value;

[0201] And, based on the first average value, a first evaluation parameter is obtained.

[0202] As a specific embodiment of the present application, the processing module is further configured to obtain a plurality of second differences based on each first difference; the second difference is a difference between two first differences that are adjacent in time sequence;

[0203] And, based on each second difference value, obtaining a second evaluation parameter; the second evaluation parameter is an average value of each second difference value;

[0204] And, based on the first evaluation parameter and the second evaluation parameter, a pressure value gradient of the second pressure controller is obtained.

[0205] As a specific embodiment of the present application, the reading module is further configured to obtain a plurality of third pressure controllers based on the gradient values ​​of the respective pressure values; the third pressure controller is a controller having a higher ranking of the gradient values ​​of the respective pressure controllers;

[0206] The processing module is further used to input the monitoring data of each third pressure controller into the prediction model; the prediction model is pre-acquired;

[0207] and, based on the prediction model, obtaining predicted pressure values ​​at various locations in the transmission pipeline;

[0208] Furthermore, based on each pressure prediction value, the abnormal area position of the transmission pipeline is obtained; the abnormal area position is any position in the transmission pipeline where the pressure prediction value is greater than the pressure value monitored by the closest pressure controller.

[0209] As a specific embodiment of the present application, the reading module is further configured to obtain a fourth pressure controller and a fifth pressure controller based on each third pressure controller; the fourth pressure controller and the fifth pressure controller are any two adjacent pressure controllers among each third pressure controller;

[0210] The processing module is further configured to obtain a preset number of prediction points based on the relationship between the fourth pressure controller and the fifth pressure controller;

[0211] And, based on the prediction model, the pressure prediction value of each prediction point is obtained.

[0212] As a specific embodiment of the present application, the reading module is further used to obtain the maximum pressure value at the abnormal area;

[0213] The processing module is further configured to: if the maximum pressure value is less than or equal to the standard pressure threshold, not adjust the first pressure controller;

[0214] and, if the maximum pressure value is greater than the standard pressure threshold, obtaining a pressure difference value based on the maximum pressure value and the standard pressure threshold;

[0215] The control module is further configured to adjust the first pressure controller based on the pressure difference.

[0216] As a specific embodiment of the present application, the delivery pipeline includes a first straight pipe section 1 and a second straight pipe section 2, one end of the second straight pipe section 2 is connected to the middle of the first straight pipe section 1, and the connection between the second straight pipe section 2 and the first straight pipe section 1 forms a connection point 17; the delivery pipeline is pre-set with multiple pressure controllers, including:

[0217] Select adjacent first layout point 11 and second layout point 12 in the first straight pipe section 1; the connection point 17 is located between the first layout point 11 and the second layout point 12, and the straight-line distance between the connection point 17 and the first layout point 11 is a first distance; the straight-line distance between the connection point 17 and the second layout point 12 is a second distance; the first distance is equal to the second distance;

[0218] A third layout point 21 is selected in the second straight pipe section 2; the straight-line distance between the connection point 17 and the third layout point 21 is a third distance; and the third distance is equal to the first distance;

[0219] Pressure controllers are respectively provided at the first arrangement point 11 , the second arrangement point 12 and the third arrangement point 21 .

[0220] As a specific embodiment of the present application, the delivery pipeline further includes a third straight pipe section 3, one end of which is connected to the first straight pipe section 1 through a bend 4; the delivery pipeline is pre-set with multiple pressure controllers and further includes:

[0221] Select the fourth layout point 15 in the first straight pipe section 1;

[0222] A fifth layout point 16 is selected on the bend 4; the fifth layout point 16 is located in the middle of the bend 4;

[0223] The sixth layout point 31 is selected in the third straight pipe section 3; the fourth layout point 15, the fifth layout point 16 and the sixth layout point 31 are three layout points set in sequence;

[0224] Pressure controllers are respectively provided at the fourth arrangement point 15 , the fifth arrangement point 16 and the sixth arrangement point 31 .

[0225] It should be clear that the pressure controller for the water supply and drainage system proposed in this application can determine the location where turbulence or eddy current occurs inside the delivery pipeline by setting a pressure controller that can measure the pressure and position of the delivery pipeline, and then adjust the pressure of the abnormal area of ​​the delivery pipeline based on the corresponding pressure controller to avoid damage to the delivery pipeline due to excessive pressure in the abnormal area.

[0226] It should be understood that computer-readable storage media in this application include permanent and non-permanent, removable and non-removable media that can be used to store information by any method or technology. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory, static random access memory, dynamic random access memory, other types of random access memory, read-only memory, electrically erasable programmable read-only memory, flash memory or other memory technology, read-only compact disc read-only memory, digital versatile disc or other optical storage, magnetic cassettes, disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include temporary computer-readable media such as modulated data signals and carrier waves.

[0227] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0228] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the methods, devices and equipment described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0229] In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the modules is merely a logical function division. In actual implementation, there may be other division methods, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can be electrical, mechanical or other forms.

[0230] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected to achieve the purpose of the present embodiment according to actual needs.

[0231] In addition, the functional modules in each embodiment of the present application can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into a module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium.

[0232] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0233] The computer program product includes one or more computer instructions. When the computer program is loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present application are fully or partially generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that can be stored on a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., a floppy disk, hard disk, or magnetic tape), an optical medium (e.g., a digital versatile disk), or a semiconductor medium (e.g., a solid-state drive (SSD)).

[0234] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions, and alterations may be made to these embodiments without departing from the principles of the present application.

Claims

1. A pressure control method for water supply and drainage systems, applied to delivery pipelines; The delivery pipeline is preset with multiple pressure controllers; it is characterized in that, The pressure control method for a water supply and drainage system comprises: Acquiring monitoring data of each pressure controller; the monitoring data includes the position of each pressure controller in the delivery pipeline and the pressure value monitored by each pressure controller; Based on the monitoring data, a pressure value gradient of each pressure controller is obtained; the pressure value gradient is at least used to represent the change value of the pressure value monitored by the corresponding pressure controller over time; Based on the gradient of each pressure value, the position of the abnormal area of ​​the conveying pipeline is obtained; the abnormal area is the area where turbulence or eddy current occurs in the conveying pipeline; Based on the position of the abnormal area, a first pressure controller is obtained; the first pressure controller is the pressure controller closest to the abnormal area among the pressure controllers; Adjusting the first pressure controller so that the maximum pressure value at the abnormal area is less than or equal to a standard pressure threshold; the standard pressure threshold is pre-set; Get the pressure gradient of each pressure controller, including: Based on each pressure controller, a second pressure controller is obtained; the second pressure controller is any one of the pressure controllers; Based on the monitoring data, obtaining a time series pressure value of the second pressure controller; Based on the time series pressure values, a plurality of first difference values ​​are obtained, wherein the first difference value is a difference between two pressure values ​​adjacent in the time series; Based on each first difference, obtaining a first evaluation parameter; Based on the first evaluation parameter, obtaining a pressure value gradient of the second pressure controller; The obtaining of the first evaluation parameter based on each first difference includes: Based on each first difference, a first average value is obtained; the first average value is an average value of the absolute values ​​of each first difference; Recording the first average value as a first evaluation parameter; The step of obtaining the pressure gradient of the second pressure controller based on the first evaluation parameter includes: Based on each first difference value, a plurality of second difference values ​​are obtained, wherein the second difference value is a difference between two first difference values ​​that are adjacent in time sequence; Based on each second difference, a second evaluation parameter is obtained; the expression of the second evaluation parameter is: in, Indicates the The second evaluation parameter corresponding to each monitoring point; represents the first difference at time t; represents the first difference at time t-1; represents the exponential function; Indicates the absolute value; Indicates the The number of time series pressure values ​​at each monitoring point; The first evaluation parameter and the second evaluation parameter are weighted by a preset weight coefficient to obtain the pressure value gradient of the second pressure controller.

2. The pressure control method for a water supply and drainage system according to any one of claim 1, characterized in that: Obtaining the location of the abnormal area of ​​the transmission pipeline based on the gradient of each pressure value includes: Sorting all pressure value gradients from large to small, and using controllers corresponding to a preset number of pressure value gradients that are ranked high in the sorting results as third pressure controllers; Inputting the monitoring data of each third pressure controller into a prediction model; the prediction model adopts an autoregressive difference moving average prediction model; Based on the prediction model, obtaining the pressure prediction value at each position of the transmission pipeline; Based on each pressure prediction value, the abnormal area position of the conveying pipeline is obtained; the abnormal area position is any position in the conveying pipeline where the pressure prediction value is greater than the pressure value monitored by the closest pressure controller.

3. The pressure control method for a water supply and drainage system according to claim 2, characterized in that: The step of obtaining the pressure prediction value at each location of the transmission pipeline based on the prediction model includes: Based on each of the third pressure controllers, a fourth pressure controller and a fifth pressure controller are obtained; the fourth pressure controller and the fifth pressure controller are any two adjacent pressure controllers among each of the third pressure controllers; Based on the relationship between the fourth pressure controller and the fifth pressure controller, obtaining a preset number of prediction points; Based on the prediction model, the pressure prediction value of each prediction point is obtained.

4. The pressure control method for a water supply and drainage system according to any one of claim 1, characterized in that: Adjusting the first pressure controller so that the maximum pressure value at the abnormal area is less than or equal to a standard pressure threshold includes: Obtaining the maximum pressure value at the abnormal area; If the maximum pressure value is less than or equal to the standard pressure threshold, the first pressure controller is not adjusted; If the maximum pressure value is greater than the standard pressure threshold, obtaining a pressure difference value based on the maximum pressure value and the standard pressure threshold; Based on the pressure difference, the first pressure controller is adjusted to complete the adjustment by reducing the pressure difference by the maximum pressure value controlled by the first pressure controller.

5. The pressure control method for a water supply and drainage system according to any one of claim 1, characterized in that: The delivery pipeline includes a first straight pipe section and a second straight pipe section, one end of the second straight pipe section is connected to the middle of the first straight pipe section, and the connection between the second straight pipe section and the first straight pipe section forms a connection point; the delivery pipeline is preset with multiple pressure controllers, including: Selecting adjacent first and second layout points in the first straight pipe section; the connection point is located between the first and second layout points, the straight-line distance between the connection point and the first layout point is a first distance; the straight-line distance between the connection point and the second layout point is a second distance; the first distance is equal to the second distance; A third layout point is selected in the second straight pipe section; the straight-line distance between the connection point and the third layout point is a third distance; and the third distance is equal to the first distance; Pressure controllers are respectively provided at the first layout point, the second layout point and the third layout point.

6. The pressure control method for a water supply and drainage system according to claim 5, characterized in that: The delivery pipeline further includes a third straight pipe section, one end of which is connected to the first straight pipe section via a bend; the delivery pipeline is pre-installed with multiple pressure controllers and further includes: Selecting a fourth layout point in the first straight pipe section; Selecting a fifth layout point on the curved pipe; the fifth layout point is located in the middle of the curved pipe; A sixth layout point is selected in the third straight pipe section; the fourth layout point, the fifth layout point and the sixth layout point are three layout points arranged in sequence; Pressure controllers are respectively provided at the fourth layout point, the fifth layout point and the sixth layout point.

7. A pressure controller for a water supply and drainage system, which implements the pressure control method for a water supply and drainage system according to claim 1 and is applied to a delivery pipeline; the delivery pipeline is pre-installed with multiple pressure controllers; characterized in that: include: A reading module is used to obtain monitoring data of each pressure controller; the monitoring data includes the position of each pressure controller in the delivery pipeline and the pressure value monitored by each pressure controller; A processing module, configured to obtain a pressure value gradient of each pressure controller based on the monitoring data; The pressure value gradient is at least used to represent the change in the pressure value monitored by the corresponding pressure controller over time; and, based on the gradient of each pressure value, obtaining the position of an abnormal region of the conveying pipeline; the abnormal region is a region in the conveying pipeline where turbulence or eddy current occurs; And, based on the position of the abnormal area, a first pressure controller is obtained; the first pressure controller is the pressure controller closest to the abnormal area among the pressure controllers; And, adjusting the first pressure controller so that the maximum pressure value at the abnormal area position is less than or equal to a standard pressure threshold; the standard pressure threshold is preset.

Images