Pressure Monitoring and Control System for Water Supply Pipeline Network

Abstract

The present invention provides a pressure monitoring and control system for a water supply network, which includes a pressure monitoring module for real-time monitoring of the water pressure in the water supply pipeline at the pressure regulation point, a control module for analyzing and processing the pressure data monitored and collected by the pressure monitoring module, a cloud platform system for background monitoring and operation control, a communication module for transmitting the pressure data analyzed and processed by the control module to the cloud platform system, and a valve regulating device for adjusting the opening degree of a pressure reducing valve to regulate the water pressure downstream of the pressure regulation point. The pressure monitoring module, the communication module, and the valve regulating device are respectively electrically connected to the control module. The present invention solves the problems existing in the monitoring of the water supply pressure of the water supply network, such as low accuracy of network pressure regulation and control, inability to achieve adaptive regulation of the network pressure according to the change of the water pressure demand downstream of the pressure regulation point, difficulty in ensuring the balance of the water supply pressure downstream of the pressure regulation point, and increasing the risks of network leakage and network pipe burst.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline network pressure monitoring, and more specifically, relates to a pressure monitoring and control system for a water supply pipeline network. Background Art

[0002] The management of the water supply pressure in a water supply pipeline network is a key technical measure to reduce pipeline network leakage and the frequency of pipeline network bursts. During the water supply process of water supply points by water supply enterprises, water supply dispatching personnel usually need to adjust the outlet pressure of pressure reducing valves distributed on each water supply pipeline in the pipeline network according to the water pressure changes in the downstream water supply pipelines, so as to achieve pipeline network pressure control and management, and ensure the balance of the water supply pressure and water supply safety of each water supply pipeline located downstream of the water supply pipeline network. At present, the pipeline network pressure of the water supply pipeline network is mainly monitored and managed in two ways: manual on-duty and manual adjustment of pressure reducing valves, and automatic adjustment of pressure reducing valves at fixed preset target pressure values by a controller at regular intervals, so as to adjust and manage the water supply pressure of the water supply pipeline network. However, the above two monitoring and management methods for the water supply pressure of the water supply pipeline network have the problems of low accuracy of pipeline network pressure adjustment and control, and cannot achieve self-adaptive adjustment of the pipeline network pressure according to the changes in the water supply pressure requirements of the downstream water supply pipelines at each pressure adjustment point (the location where the pressure reducing valve is installed), and there is a high risk of pipeline network leakage and pipeline network bursts. Summary of the Invention

[0003] The purpose of the present invention is to provide a pressure monitoring and control system for a water supply pipeline network, aiming to solve the problems existing in the prior art, such as low accuracy of pipeline network pressure adjustment and control, inability to achieve self-adaptive adjustment of the pipeline network pressure according to the changes in the water supply pressure requirements of the downstream water supply pipelines at each pressure adjustment point, and a high risk of pipeline network leakage and pipeline network bursts.

[0004] To achieve the above object, the technical solution adopted by the present invention is to provide a pressure monitoring and control system for a water supply pipeline network, including a pressure monitoring module for real-time monitoring of the water pressure in the downstream water supply pipeline of a pressure adjustment point, a control module for analyzing and processing the pressure data collected by the pressure monitoring module, a cloud platform system for background monitoring and operation control, a communication module for transmitting the pressure data analyzed and processed by the control module to the cloud platform system, and a valve adjustment device for adjusting the opening degree of a pressure reducing valve to adjust and control the water pressure downstream of the pressure adjustment point. The pressure monitoring module, the communication module, and the valve adjustment device are respectively electrically connected to the control module.

[0005] Further, the valve adjustment device includes a base, a direct stroke adjustment mechanism for adjusting and controlling the opening degree of the pressure reducing valve, and a driving motor and a transmission component for driving the direct stroke adjustment mechanism to perform linear reciprocating motion. The driving motor is arranged on the base.

[0006] Further, the linear stroke adjustment mechanism includes a nut sleeve, an adjustment screw engaged with the nut sleeve, and a limit assembly for restricting the circumferential rotation of the adjustment screw. The nut sleeve is rotatably installed on the base, and the limit assembly is installed above the nut sleeve on the base. The nut sleeve has a thread hole penetrating radially, the adjustment screw is disposed through the thread hole, and a through hole for the adjustment screw to pass through is provided on the base. One end of the adjustment screw is movably connected to the limit assembly, and the other end of the adjustment screw passes through the through hole and is used to connect with the pressure reducing valve; the transmission assembly includes a driving gear and a driven gear engaged with the driving gear. The driving gear is sleeved on the output shaft of the driving motor, and the driven gear is sleeved on the nut sleeve.

[0007] Further, the nut sleeve includes a convex ring and a necking sleeve connected to the convex ring. An internal thread engaged with the adjustment screw is provided in the necking sleeve. A plain bearing is provided between the convex ring and the limit assembly, and the adjustment screw passes through the plain bearing and the necking sleeve in sequence.

[0008] Further, a bearing sleeve is sleeved on the necking sleeve, the driven gear is sleeved on the bearing sleeve, and at least one positioning bearing is sleeved on the bearing sleeve. The positioning bearings are arranged in sequence along the radial direction of the bearing sleeve.

[0009] Further, a positioning sleeve for positioning the adjustment screw is provided at a position corresponding to the through hole on the base, and the adjustment screw is slidably inserted into the positioning sleeve.

[0010] Further, the positioning sleeve includes a sleeve portion and a fixing portion extending radially along the sleeve portion. The fixing portion is provided on the base, and one end of the sleeve portion away from the fixing portion extends to the bottom end of the nut sleeve, and the adjustment screw is slidably inserted into the sleeve.

[0011] Further, the pressure monitoring module includes a first pressure sensor for real-time monitoring and acquisition of the water pressure in the water supply pipeline in front of the pressure reducing valve, and a second pressure sensor for real-time monitoring and acquisition of the water pressure in the water supply pipeline behind the pressure reducing valve. The first pressure sensor and the second pressure sensor are electrically connected to the control module respectively.

[0012] Further, a pressure damping module for stabilizing the fluid pressure and eliminating the water hammer effect is also included. The pressure damping module includes a first pressure damper provided on the water supply pipeline in front of the pressure reducing valve and a second pressure damper provided on the water supply pipeline behind the pressure reducing valve. The first pressure damper is connected to the first pressure sensor, and the second pressure damper is connected to the second pressure sensor.

[0013] Furthermore, it further includes an analog-to-digital conversion module for respectively performing analog-to-digital conversion on the pressure signals collected by the first pressure sensor. The analog-to-digital conversion module includes a first analog-to-digital converter and a second analog-to-digital converter. The first analog-to-digital converter is electrically connected to the first pressure sensor and the control module respectively, and the second analog-to-digital converter is electrically connected to the second pressure sensor and the control module respectively.

[0014] The beneficial effects of the pressure monitoring and control system for a water supply network provided by the present invention are as follows: Compared with the prior art, the pressure monitoring and control system for a water supply network provided by the present invention is provided with a pressure monitoring module for real-time monitoring and collecting the pressure downstream of the pressure regulation point of the water supply network. The communication module transmits the pressure data collected by the pressure monitoring module to the cloud platform system in real time; the cloud platform system statistically analyzes the pressure data collected within all time periods to form a curve of the pressure data fluctuating with time, and compares and analyzes the curve of the pressure data fluctuating with time with the critical water supply pressure data model (the critical water supply pressure data model is a mathematical model established based on the change of the water consumption in each previous time period at the water supply point where the pressure regulation point is located), and converts the judgment result of the comparison and analysis into a corresponding control signal in real time and transmits it back to the control module through the communication module. The control module finely adjusts the pressure reducing valve at the pressure regulation point according to the online real-time monitoring judgment result of the cloud platform system, so as to realize the adaptive adjustment of the network pressure according to the change of the real-time water supply pressure demand of the water supply pipeline downstream of the pressure regulation point, reduce the risk of network leakage and network pipe burst, and improve the accuracy and efficiency of the network pressure regulation and control. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a functional module flow chart of the pressure monitoring and control system for a water supply network provided by an embodiment of the present invention;

[0017] Figure 2 It is a front view structural schematic diagram of the pressure monitoring and control system for a water supply network provided by an embodiment of the present invention;

[0018] Figure 3 It is a side view structural schematic diagram of the pressure monitoring and control system for a water supply network provided by an embodiment of the present invention;

[0019] Figure 4 Schematic three-dimensional structure diagram of the pressure monitoring and control system for a water supply network provided by an embodiment of the present invention;

[0020] Figure 5 Schematic partial sectional structure diagram of the valve regulating device provided by an embodiment of the present invention;

[0021] Figure 6 Schematic three-dimensional structure diagram of the valve regulating device provided by an embodiment of the present invention;

[0022] Figure 7 Schematic exploded structure diagram of the valve regulating device provided by an embodiment of the present invention.

[0023] Among them, the main reference signs in each drawing are as follows:

[0024] 1 - Pressure monitoring module; 11 - First pressure sensor; 12 - Second pressure sensor; 2 - Control module; 3 - Cloud platform system; 4 - Communication module; 5 - Valve regulating device; 51 - Base; 52 - Linear stroke regulating mechanism; 521 - Nut sleeve; 5211 - Convex ring; 5212 - Necking sleeve; 522 - Adjusting screw; 523 - Limiting component; 5231 - Limiting block; 5232 - Positioning pin; 5233 - Limiting groove; 53 - Driving motor; 54 - Transmission component; 541 - Driving gear; 542 - Driven gear; 55 - Plain bearing; 56 - Bearing sleeve; 57 - Positioning bearing; 58 - Positioning sleeve; 581 - Sleeve part; 582 - Fixed part; 6 - Pressure damping module; 61 - First pressure damper; 62 - Second pressure damper; 7 - Analog-to-digital conversion module; 71 - First analog-to-digital converter; 72 - Second analog-to-digital converter; 8 - Positioner; 9 - Pressure reducing valve. Detailed implementation manners

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined. "Several" means one or more, unless otherwise specifically defined.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Please refer to Figures 1 to 4 simultaneously. Now, the pressure monitoring and control system for a water supply network provided by the present invention will be described. The pressure monitoring and control system for a water supply network provided by an embodiment of the present invention includes a pressure monitoring module 1 for real-time monitoring of the water pressure in the water supply pipeline downstream of a pressure regulation point (the location where a pressure reducing valve 9 is installed), a control module 2 for analyzing and processing the pressure data monitored and collected by the pressure monitoring module 1, a cloud platform system 3 for background monitoring and operation control, a communication module 4 for transmitting the pressure data analyzed and processed by the control module 2 to the cloud platform system 3, and a valve regulating device 5 for adjusting the opening degree of the pressure reducing valve 9 to regulate and control the water pressure downstream of the pressure regulation point (the location where the pressure reducing valve 9 is installed). The pressure monitoring module 1, the communication module 4, and the valve regulating device 5 are respectively electrically connected to the control module 2.

[0031] Specifically, the valve regulating device 5 in this embodiment adopts a fully automatic valve regulating device 5 controlled electrically, and the pressure reducing valve 9 adopts a pilot-operated pipeline control valve that can precisely control its opening degree (the degree of separation when the pressure reducing valve 9 is opened).

[0032] The basic working principle of the pressure monitoring and control system for a water supply network provided by an embodiment of the present invention: Since the water supply pressure demand in the water supply pipeline downstream of the pressure regulation point of the water supply network fluctuates with the change in the water consumption of the water supply point. The pressure monitoring module 1 installed in the water supply pipeline monitors and collects the pressure signal in the water supply pipeline downstream of the pressure regulation point of the water supply network in real time, and transmits the pressure signal to the control module 2. The control module 2 performs data analysis and processing on the pressure signal collected by the pressure monitoring module 1. The communication module 4 transmits the real-time pressure data analyzed and processed by the control module 2 to the cloud platform system 3 in real time. The cloud platform system 3 stores the pressure data downstream of the pressure regulation point (the location where the pressure reducing valve 9 is installed) and statistically analyzes the pressure data collected in all time periods to form a curve of the pressure data fluctuating with time. The cloud platform system 3 judges whether the pressure value downstream of the pressure regulation point (the location where the pressure reducing valve 9 is installed) conforms to the critical water supply pressure data model (the critical water supply pressure data model is a mathematical model established based on the change in water consumption in each time period of the water supply point where the pressure regulation point is located) according to the curve of the pressure data fluctuating with time, and converts the judgment result into a corresponding real-time control signal and sends it back to the control module 2 through the communication module 4. The control module 2 controls whether the valve regulating device 5 needs to adjust the pressure reducing valve 9 at the pressure regulation point according to the online real-time monitoring judgment result of the cloud platform system 3, so as to realize the adaptive regulation of the pipe network pressure according to the change in the real-time water supply pressure demand in the water supply pipeline downstream of each pressure regulation point, reduce the risk of pipe network leakage and pipe network burst, and improve the accuracy and efficiency of the pipe network pressure regulation and control.

[0033] The pressure monitoring and control system for a water supply network provided by the present invention, compared with the prior art, is provided with a pressure monitoring module 1 that monitors and collects the pressure downstream of the pressure regulation point of the water supply network in real time. The communication module 4 transmits the pressure data collected by the pressure monitoring module 1 to the cloud platform system 3 in real time. The cloud platform system 3 statistically analyzes the pressure data collected in all time periods to form a curve of the pressure data fluctuating with time, and compares and analyzes the curve of the pressure data fluctuating with time with the critical water supply pressure data model (the critical water supply pressure data model is a mathematical model established based on the change in water consumption in each time period of the water supply point where the pressure regulation point is located), and converts the judgment result of the comparison and analysis into a corresponding control signal in real time and sends it back to the control module 2 through the communication module 4. The control module 2 controls the valve regulating device 5 to finely adjust the pressure reducing valve 9 at the pressure regulation point according to the online real-time monitoring judgment result of the cloud platform system 3, so as to realize the adaptive regulation of the pipe network pressure according to the change in the real-time water supply pressure demand in the water supply pipeline downstream of the pressure regulation point, reduce the risk of pipe network leakage and pipe network burst, and improve the accuracy and efficiency of the pipe network pressure regulation and control.

[0034] Further, please also refer to Figures 5 to 7 As a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, the valve regulating device 5 includes a base 51, a linear stroke regulating mechanism 52 for regulating and controlling the opening degree of the pressure reducing valve 9 (the opening and closing degree of the valve of the pressure reducing valve 9), and a driving motor 53 and a transmission assembly 54 for driving the linear stroke regulating mechanism 52 to perform a linear reciprocating motion. The driving motor 53 is arranged on the base 51; the linear stroke regulating mechanism 52 includes a nut sleeve 521, an adjusting screw rod 522 engaged with the nut sleeve 521, and a limiting assembly 523 for restricting the circumferential rotation of the adjusting screw rod 522. The nut sleeve 521 is rotatably installed on the base 51, and the limiting assembly 523 is installed above the corresponding nut sleeve 521 on the base 51. The nut sleeve 521 has a thread hole penetrating along the radial direction, and the adjusting screw rod 522 is penetrated through the thread hole of the nut sleeve 521. A through hole for the adjusting screw rod 522 to pass through is arranged on the base 51, and the position of the through hole on the base 51 corresponds to the thread hole of the nut sleeve 521. One end of the adjusting screw rod 522 is movably connected with the limiting assembly 523, and the other end of the adjusting screw rod 522 passes through the through hole on the base 51 and is used for connecting with the regulating valve rod of the pressure reducing valve 9; the transmission assembly 54 includes a driving gear 541 and a driven gear 542 engaged with the driving gear 541. The driving gear 541 is sleeved on the output shaft of the driving motor 53, and the driven gear 542 is sleeved on the nut sleeve 521.

[0035] Preferably, the driving motor 53 is a stepper motor that controls the angular displacement by controlling the number of pulses to achieve accurate positioning. The opening degree of the pressure reducing valve 9 can be accurately adjusted by driving the adjusting screw rod 522 through the driving motor 53, so as to accurately adjust and control the water pressure in the water supply pipeline (downstream of the pressure regulating point) behind the pressure reducing valve 9.

[0036] The basic working principle of the valve regulating device 5 in this embodiment: When the driving motor 53 is powered on, the control module 2 sends a control instruction to control the rotation of the output shaft of the driving motor 53. The driving gear 541 on the output shaft of the driving motor 53 drives the driven gear 542 to rotate. The driven gear 542 drives the nut sleeve 521 rotatably installed on the base 51 to rotate. Since the adjusting screw rod 522 penetrating through the thread hole of the nut sleeve 521 cannot rotate circumferentially under the limiting action of the limiting member, and the adjusting screw rod 522 is prevented from generating a large torque to damage the pressure reducing valve 9. Under the meshing cooperation of the thread hole of the nut sleeve 521 and the external thread of the adjusting screw rod 522, by only controlling the forward and reverse rotation of the driving motor 53 through the control module 2, the adjusting screw rod 522 can be made to perform a linear reciprocating linear stroke motion along the radial direction of the nut sleeve 521, so that the pressure reducing valve 9 can be opened or closed by the adjusting screw rod 522 performing a linear stroke motion along the radial direction of the nut sleeve 521.

[0037] The valve adjusting device 5 of this embodiment drives the nut sleeve 521 rotatably mounted on the base 51 by the driving motor 53. With the cooperation of the nut sleeve 521 and the adjusting screw 522, by only controlling the forward and reverse rotation of the driving motor 53 through the control module 2, the adjusting screw 522 can make a linear reciprocating direct stroke movement along the radial direction of the nut sleeve 521, accurately adjust and control the opening degree of the pressure reducing valve 9 installed on the water supply pipe, and achieve the purpose of accurately adjusting and controlling the water pressure of the water supply pipe (downstream of the pressure adjustment point) behind the pressure reducing valve 9, with high automation degree and adjustment and control accuracy.

[0038] Further, please refer to Figure 1 As a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, the nut sleeve 521 includes a convex ring 5211 and a necking sleeve 5212 connected to the convex ring 5211. An internal thread meshing with the adjusting screw 522 is provided inside the necking sleeve 5212. A plain bearing is provided between the convex ring 5211 and the limiting component 523. The adjusting screw 522 sequentially passes through the plain bearing and the necking sleeve 5212. A plain bearing 55 is provided between the convex ring 5211 and the limiting component 523 to reduce the friction generated between the T-shaped nut sleeve 521 and the limiting component 523 during rotation, enhance the flexibility of the rotation of the nut sleeve 521, and improve the adjustment and control accuracy of the valve automatic adjusting device.

[0039] Further, please refer to Figure 6 As a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, a bearing sleeve 56 is sleeved on the necking sleeve 5212 of the nut sleeve 521. The driven gear 542 is sleeved on the bearing sleeve 56, and at least one positioning bearing 57 is sleeved on the bearing sleeve 56. The positioning bearings 57 are sequentially arranged along the radial direction of the bearing sleeve 56. By providing the bearing sleeve 56 and a plurality of positioning bearings 57 cooperating with the bearing sleeve 56 on the necking sleeve 5212 of the nut sleeve 521, the flexibility of the rotation of the nut sleeve 521 can be enhanced, and the concentricity of the nut sleeve 521 when rotating around its central axis can be ensured, preventing the nut sleeve 521 from having a slight angular deflection during rotation, and improving the adjustment and control accuracy of the valve automatic adjusting device.

[0040] Further, please refer to Figure 5, as a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, a positioning sleeve 58 for positioning the adjusting screw 522 is provided at a position corresponding to the through hole on the base 51. The adjusting screw 522 is slidably inserted into the sleeve hole of the positioning sleeve 58 and is connected to the adjusting valve rod of the pressure reducing valve 9 to ensure good concentricity when the adjusting screw 522 makes a linear motion, and to prevent one end of the adjusting screw 522 for connecting the adjusting valve rod of the pressure reducing valve 9 from having a slight yaw during the linear stroke motion, which may affect the adjustment and control accuracy of the valve automatic adjustment device. At the same time, the stability and reliability of the adjustment and control of the pressure reducing valve 9 by the adjusting screw 522 are enhanced.

[0041] Further, please refer to Figure 5 , as a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, the positioning sleeve 58 includes a sleeve portion 581 and a fixing portion 582 extending radially along the sleeve portion 581. The fixing portion 582 is provided on the base 51. One end of the sleeve portion 581 away from the fixing portion 582 extends to the bottom end of the nut sleeve 521. The adjusting screw 522 is slidably inserted into the sleeve portion 581 of the positioning sleeve 58 and is connected to the adjusting valve rod of the pressure reducing valve 9 to ensure good concentricity with the central axis of the nut sleeve 521 when the adjusting screw 522 makes a linear motion, and to prevent the nut sleeve 521 from having a slight angular yaw during rotation, which may affect the adjustment and control accuracy of the valve automatic adjustment device. At the same time, the stability and reliability of the adjustment and control of the pressure reducing valve 9 by the adjusting screw 522 are enhanced.

[0042] Further, please refer to Figure 6 , as a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, the limiting component 523 includes a limiting block 5231 and a positioning pin 5232 installed directly above the corresponding nut sleeve 521 on the base 51. A positioning pin 5232 is provided at one end of the adjusting screw 522 away from the base 51. The positioning pin 5232 is connected to the adjusting screw 522 at a right angle. The limiting block 5231 is provided with a limiting groove 5233 for accommodating the positioning pin 5232. The positioning pin 5232 is movably arranged in the limiting groove 5233. Under the action of the positioning pin 5232 and the limiting groove 5233 of the limiting block 5231, the adjusting screw 522 cannot rotate circumferentially around its central axis but can only make a reciprocating linear stroke along its axial direction, avoiding the adjusting screw 522 generating a large torque driven by the rotation of the nut sleeve 521 and causing damage to the pressure reducing valve 9, and reducing the stability, reliability and accuracy of the adjustment and control of the pressure reducing valve 9 by the adjusting screw 522.

[0043] Further, please refer to Figure 4, as a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, the pressure monitoring module 1 includes a first pressure sensor 11 for real-time monitoring and acquisition of the water pressure in the water supply pipeline in front of the pressure reducing valve 9 (upstream of the pressure regulating point) and a second pressure sensor 12 for real-time monitoring and acquisition of the water pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure regulating point). The first pressure sensor 11 and the second pressure sensor 12 are respectively electrically connected to the control module 2. First, the first pressure sensor 11 real-time monitors and acquires the first pressure in the water supply pipeline in front of the pressure reducing valve 9 (upstream of the pressure regulating point), and the second pressure sensor 12 real-time monitors and acquires the second pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure regulating point), and transmits the real-time acquired first pressure and second pressure to the control module 2 respectively; secondly, the control module 2 compares the first pressure and the second pressure received in real time. If the first pressure value is greater than or equal to the second pressure value, it indicates that the water flow rate and water pressure in the water supply pipeline tend to be normal. The control module 2 then sends a control command to control the valve regulating device 5 to adjust the opening degree of the pressure reducing valve 9 until the second pressure sensor 12 detects that the water pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure regulating point) reaches the pressure value required by the actual water supply pressure. The control module 2 then sends a control command to control the valve regulating device 5 to stop adjusting the opening degree of the pressure reducing valve 9, so as to achieve real-time adaptive and precise adjustment of the water pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure regulating point), ensure the balance of the water supply pressure and the water supply safety in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure regulating point), and avoid the phenomenon of insufficient water supply flow rate or unbalanced water supply pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure regulating point).If, during the process of adjusting the opening degree of the pressure reducing valve 9 by the valve adjusting device 5, an abnormal situation occurs where the first pressure value is less than the second pressure value, it indicates that due to the opening and closing of the pressure reducing valve 9, the high-pressure water flow in the water supply pipeline in front of the pressure reducing valve 9 (upstream of the pressure adjustment point) causes a sharp change in the water volume flow in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure adjustment point), triggering the "water hammer effect" and causing an instant and sharp abnormal increase in the water pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure adjustment point). After receiving the abnormal pressure change situation, the control module 2 immediately controls the valve adjusting device 5 to stop adjusting the opening degree of the pressure reducing valve 9 to avoid the destructive water hammer effect on the water supply pipeline behind the pressure reducing valve 9 caused by the continuously enhanced "water hammer effect", and effectively prevent the water supply pipeline behind the pressure reducing valve 9 from bursting due to continuous water hammer effect, resulting in significant economic losses. After the water pressure in the water supply pipeline behind the pressure reducing valve 9 stabilizes and returns to the normal situation where the first pressure value is greater than or equal to the second pressure value, the control module 2 sends a control command to control the valve adjusting device 5 to adjust the opening degree of the pressure reducing valve 9 until the second pressure sensor 12 detects that the water pressure in the water supply pipeline behind the pressure reducing valve 9 reaches the preset target pressure value. Then the control module 2 sends a control command to control the valve adjusting device 5 to stop adjusting the opening degree of the pressure reducing valve 9, thereby achieving real-time and precise adjustment of the water pressure in the water supply pipeline behind the pressure reducing valve 9 and ensuring the balance and safety of the water supply pressure in the water supply pipeline behind the pressure reducing valve 9. In addition, a first pressure sensor 11 and a second pressure sensor 12 are respectively arranged in the water supply pipeline in front of the pressure reducing valve 9 and the water supply pipeline behind the pressure reducing valve 9. By comparing and analyzing the water pressure (front pressure) in front of the pressure reducing valve 9 and the water pressure (rear pressure) behind the pressure reducing valve 9, it is also possible to avoid misjudging the instantaneous high pressure caused by the "water hammer effect" as the water pressure (rear pressure) behind the pressure reducing valve 9 during the process of adjusting the opening degree of the pressure reducing valve 9 by the valve adjusting device 5, resulting in the water pressure (rear pressure) behind the pressure reducing valve 9 finally being less than the preset target pressure value, causing a phenomenon of insufficient water supply flow or unbalanced water supply pressure in the water supply pipeline behind the pressure reducing valve 9, thereby effectively improving the accuracy of water supply pressure regulation and control.

[0044] Preferably, the first pressure sensor 11 and the second pressure sensor 12 respectively adopt high-precision solid-state strain gauge type pressure sensors. The first pressure sensor 11 and the second pressure sensor 12 can also adopt silicon piezoresistive pressure probes to collect pressure signals. Using solid-state strain gauge type pressure sensors and silicon piezoresistive pressure probes for pressure signal collection has high measurement accuracy and a wide measurement range. Of course, the first pressure sensor 11 and the second pressure sensor 12 can also adopt other high-precision pressure sensors, which can be selected according to the actual measurement accuracy and working requirements, and are not limited here.

[0045] Further, please refer to Figure 4, as a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, further includes a pressure damping module 6 for stabilizing the fluid pressure and eliminating the water hammer effect. The pressure damping module 6 includes a first pressure damper 61 disposed on the water supply pipe in front of the pressure reducing valve 9 and a second pressure damper 62 disposed on the water supply pipe behind the pressure reducing valve 9. The first pressure damper 61 is connected to the first pressure sensor 11, and the second pressure damper 62 is connected to the second pressure sensor 12. The first pressure damper 61 and the second pressure damper 62 are respectively disposed in the water supply pipe in front of the pressure reducing valve 9 and the water supply pipe behind the pressure reducing valve 9. After the water pressure in the water supply pipe in front of the pressure reducing valve 9 and the water supply pipe behind the pressure reducing valve 9 is stabilized by the first pressure damper 61 and the second pressure damper 62 respectively and the water hammer effect is eliminated, the water body pressure is then supplied to the first pressure sensor 11 and the second pressure sensor 12 respectively for monitoring and collecting corresponding pressure data, reducing the influence of the large-amplitude water pressure fluctuation formed by the water hammer effect on the accuracy of the pressure data collected by the first pressure sensor 11 and the second pressure sensor 12, improving the accuracy of the pressure data collected by the first pressure sensor 11 and the second pressure sensor 12, and further improving the accuracy of the water supply pressure regulation and control; at the same time, it can effectively prevent the destructive water hammer action formed by the water hammer effect from damaging the first pressure sensor 11 and the second pressure sensor 12, enhancing the stability and reliability of the working performance of the pressure transmitter.

[0046] Further, please refer to FIG. 1 together. As a specific embodiment of the pressure monitoring and control system for a water supply network provided by the present invention, it further includes an analog-to-digital conversion module 7 for respectively performing analog-to-digital conversion on the pressure analog electrical signals collected by the first pressure sensor 11 and the second pressure sensor 12. The analog-to-digital conversion module 7 includes a first analog-to-digital converter 71 and a second analog-to-digital converter 72. The first analog-to-digital converter 71 is electrically connected to the first pressure sensor 11 and the control module 2 respectively, and the second analog-to-digital converter 72 is electrically connected to the second pressure sensor 12 and the control module 2 respectively. In this embodiment, by setting the pressure analog electrical signals collected by the first pressure sensor 11 and the second pressure sensor 12 to be respectively subjected to analog-to-digital conversion by the first analog-to-digital converter 71 and the second analog-to-digital converter 72, the pressure analog electrical signals monitored and collected by the first pressure sensor 11 and the second pressure sensor 12 are quickly and accurately converted into pressure data represented by numbers, so as to improve the speed and accuracy of the central controller's pressure data processing and analysis, thereby improving the accuracy of the pressure monitoring and control system for the water supply network in regulating and controlling the water pressure in the water supply pipe.

[0047] Further, please refer to Figure 1, as a specific implementation of the pressure monitoring and control system for water supply pipe networks provided by the present invention, further includes a locator 8 for locating the pipe network pressure regulation point (the installation location of the pressure reducing valve 9), and the locator 8 is electrically connected to the control module 2.

[0048] Specifically, the locator 8 includes a GPS / BDS module and a GPS / BDS antenna 81 electrically connected to the GPS / BDS module. During operation, the locator 8 based on GPS / BDS automatically locates the specific position of the pipe network pressure regulation point (the installation location of the pressure reducing valve 9), and sends the accurate position coordinates obtained by the locator 8 to the cloud platform system 3 through the communication module 4, so that the water supply dispatcher can automatically locate the geographical location of the pipe network pressure regulation point (the installation location of the pressure reducing valve 9) on the map of the monitoring system, solving the problem that the pipe network pressure regulation point (the installation location of the pressure reducing valve 9) has no position information feedback function and cannot be accurately located, which brings inconvenience and difficulties to the accurate regulation and scientific dispatching management of the water supply pressure of the target water supply pipe network.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure monitoring and control system for a water supply network, characterized in that: It includes a pressure monitoring module for real-time monitoring of the water pressure in the water supply pipeline downstream of the pressure regulating point, a control module for analyzing and processing the pressure data collected by the pressure monitoring module, a cloud platform system for background monitoring and operation control, a communication module for transmitting the pressure data analyzed and processed by the control module to the cloud platform system, and a valve regulating device for adjusting the opening degree of the pressure reducing valve to regulate and control the water pressure downstream of the pressure regulating point. The pressure monitoring module, the communication module, and the valve regulating device are respectively electrically connected to the control module; The valve regulating device includes a base, a direct stroke regulating mechanism for adjusting and controlling the opening degree of the pressure reducing valve, and a driving motor and a transmission component for driving the direct stroke regulating mechanism to perform linear reciprocating motion. The driving motor is arranged on the base; The direct stroke regulating mechanism includes a nut sleeve, an adjusting screw rod meshed and cooperated with the nut sleeve, and a limiting component for restricting the circumferential rotation of the adjusting screw rod. The nut sleeve is rotatably installed on the base, and the limiting component is installed above the nut sleeve on the base. The nut sleeve has a thread hole penetrating along the radial direction, and the adjusting screw rod is penetrated through the thread hole. A through hole for the adjusting screw rod to pass through is arranged on the base. One end of the adjusting screw rod is movably connected to the limiting component, and the other end of the adjusting screw rod passes through the through hole and is used for connecting with the pressure reducing valve; The transmission component includes a driving gear and a driven gear meshed and cooperated with the driving gear. The driving gear is sleeved on the output shaft of the driving motor, and the driven gear is sleeved on the nut sleeve and can drive the nut sleeve to rotate; The pressure monitoring module includes a first pressure sensor for real-time monitoring and collecting the water pressure in the water supply pipeline in front of the pressure reducing valve.

2. The pressure monitoring and control system for a water supply network according to claim 1, characterized in that: The nut sleeve includes a convex ring and a necking sleeve connected to the convex ring. An internal thread meshed with the adjusting screw rod is arranged in the necking sleeve. A plain bearing is arranged between the convex ring and the limiting component, and the adjusting screw rod sequentially penetrates through the plain bearing and the necking sleeve.

3. The pressure monitoring and control system for a water supply network according to claim 2, characterized in that: A bearing sleeve is sleeved on the necking sleeve, the driven gear is sleeved on the bearing sleeve, and at least one positioning bearing is sleeved on the bearing sleeve. Each positioning bearing is arranged sequentially along the radial direction of the bearing sleeve.

4. The pressure monitoring and control system for a water supply network according to claim 1, characterized in that: A positioning sleeve for positioning the adjusting screw rod is arranged on the base at a position corresponding to the through hole, and the adjusting screw rod is slidably inserted into the positioning sleeve.

5. The pressure monitoring and control system for a water supply network according to claim 4, characterized in that: The positioning sleeve includes a sleeve part and a fixing part extending radially along the sleeve part. The fixing part is arranged on the base, and one end of the sleeve part away from the fixing part extends to the bottom end of the nut sleeve, and the adjusting screw rod is slidably inserted into the sleeve.

6. The pressure monitoring and control system for a water supply network according to claim 1, characterized in that: The pressure monitoring module further includes a second pressure sensor for real-time monitoring and collecting the water pressure in the water supply pipeline behind the pressure reducing valve. The first pressure sensor and the second pressure sensor are respectively electrically connected to the control module.

7. The pressure monitoring and control system for a water supply network according to claim 6, characterized in that: It further includes a pressure damping module for stabilizing fluid pressure and eliminating water hammer effect. The pressure damping module includes a first pressure damper disposed on the water supply pipe in front of the pressure reducing valve and a second pressure damper disposed on the water supply pipe behind the pressure reducing valve. The first pressure damper is connected to the first pressure sensor, and the second pressure damper is connected to the second pressure sensor.

8. The pressure monitoring and control system for a water supply network according to claim 6, characterized in that: It further includes an analog-to-digital conversion module for respectively performing analog-to-digital conversion on the pressure signals collected by the first pressure sensor. The analog-to-digital conversion module includes a first analog-to-digital converter and a second analog-to-digital converter. The first analog-to-digital converter is electrically connected to the first pressure sensor and the control module respectively, and the second analog-to-digital converter is electrically connected to the second pressure sensor and the control module respectively.

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