阅读说明：本技术 用于供水管网的压力监测控制系统 (Pressure monitoring control system for water supply pipe network ) 是由 邓立群 袁培志 李哲浩 于 2019-01-11 设计创作，主要内容包括：本发明提供了一种用于供水管网的压力监测控制系统,包括用于实时监测压力调节点供水管道内水压的压力监测模块、用于对压力监测模块监测采集的压力数据进行分析处理的控制模块、用于后台监控及操作控制的云平台系统、以及用于将控制模块分析处理的压力数据传输至云平台系统的通讯模块、以及用于调节减压阀的开度以调节控制压力调节点下游水压的阀门调节装置,压力监测模块、通讯模块和阀门调节装置分别与控制模块电性连接。本发明解决供水管网的供水压力监控中存在的管网压力调节控制精度低,且无法根据压力调节点下游水压力需求变化实现管网压力的自适应调节,难以保障压力调节点下游供水压力平衡,增加管网漏失和管网爆管风险的问题。(The invention provides a pressure monitoring control system for a water supply pipe network, which comprises a pressure monitoring module for monitoring the water pressure in a water supply pipeline at a pressure adjusting point in real time, a control module for analyzing and processing 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 adjusting device for adjusting the opening of a pressure reducing valve to adjust and control the water pressure at the downstream of the pressure adjusting point, wherein the pressure monitoring module, the communication module and the valve adjusting device are respectively and electrically connected with the control module. The invention solves the problems that the pipe network pressure regulation control precision is low, the self-adaptive regulation of the pipe network pressure can not be realized according to the water pressure demand change downstream of the pressure regulation point, the downstream water supply pressure balance of the pressure regulation point is difficult to ensure, and the pipe network leakage and pipe network burst risk are increased in the water supply pressure monitoring of the water supply pipe network.)

1. A pressure monitoring control system for a water supply network, characterized by: including be used for the hydraulic pressure monitoring module in the real-time supervision pressure regulation point low reaches water supply pipeline, be used for right the pressure data that pressure monitoring module gathered carry out analysis processes's control module, be used for backstage control and operation control's cloud platform system and be used for with control module analysis processes's pressure data transmission extremely cloud platform system's communication module and be used for adjusting relief pressure valve aperture are with regulation control the hydraulic valve adjusting device of pressure regulation point low reaches, pressure monitoring module communication module with valve adjusting device respectively with control module electric connection.

2. A pressure monitoring and control system for a water supply network as claimed in claim 1 wherein: the valve adjusting device comprises a base, a straight stroke adjusting mechanism used for adjusting and controlling the opening degree of the pressure reducing valve, and a driving motor and a transmission assembly used for driving the straight stroke adjusting mechanism to do straight reciprocating motion, wherein the driving motor is arranged on the base.

3. A pressure monitoring and control system for a water supply network as claimed in claim 2 wherein: the straight stroke adjusting mechanism comprises a nut sleeve, an adjusting screw rod in meshed fit with the nut sleeve and a limiting assembly for limiting the adjusting screw rod to rotate circumferentially, the nut sleeve is rotatably mounted on the base, the limiting assembly is mounted above the nut sleeve on the base correspondingly, the nut sleeve is provided with a thread hole penetrating along the radial direction, the adjusting screw rod is arranged in the thread hole in a penetrating manner, the base is provided with a through hole for the adjusting screw rod to penetrate through, one end of the adjusting screw rod is movably connected with the limiting assembly, and the other end of the adjusting screw rod penetrates through the through hole and is connected with the pressure reducing valve; the transmission assembly comprises a driving gear and a driven gear in meshed fit with the driving gear, the driving gear is sleeved on an output shaft of the driving motor, and the driven gear is sleeved on the nut sleeve.

4. A pressure monitoring and control system for a water supply network as claimed in claim 3 wherein: the nut sleeve comprises a convex ring and a necking sleeve connected with the convex ring, inner threads matched with the adjusting screw in a meshing mode are arranged in the necking sleeve, a plane bearing is arranged between the convex ring and the limiting assembly, and the adjusting screw penetrates through the plane bearing and the necking sleeve in sequence.

5. A pressure monitoring and control system for a water supply network as claimed in claim 4 wherein: the necking sleeve is sleeved with a bearing sleeve, the driven gear is sleeved on the bearing sleeve, the bearing sleeve is sleeved with at least one positioning bearing, and the positioning bearings are sequentially arranged along the radial direction of the bearing sleeve.

6. A pressure monitoring and control system for a water supply network as claimed in claim 3 wherein: and a positioning sleeve for positioning the adjusting screw rod is arranged on the base corresponding to the through hole, and the adjusting screw rod is inserted into the positioning sleeve in a sliding manner.

7. A pressure monitoring and control system for a water supply network as set forth in claim 6 wherein: the positioning sleeve comprises a sleeve part and a fixing part which extends along the radial direction of the sleeve part, the fixing part is arranged on the base, one end of the sleeve part, far away from the fixing part, extends to the bottom end of the nut sleeve, and the adjusting screw rod is inserted into the sleeve in a sliding mode.

8. A pressure monitoring and control system for a water supply network as claimed in claim 1 wherein: the pressure monitoring module comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is used for monitoring and collecting the water pressure in the water supply pipeline in front of the pressure reducing valve in real time, the second pressure sensor is used for monitoring and collecting the water pressure in the water supply pipeline behind the pressure reducing valve in real time, and the first pressure sensor and the second pressure sensor are respectively electrically connected with the control module.

9. A pressure monitoring and control system for a water supply network as set forth in claim 8 wherein: still including being used for stabilizing fluid pressure and eliminating the pressure damping module of water hammer effect, the pressure damping module is including setting up the first pressure damper on the water supply pipe in relief pressure valve the place ahead and setting up the second pressure damper on the water supply pipe at relief pressure valve rear, first pressure damper with first pressure sensor links to each other, the second pressure damper with second pressure sensor links to each other.

10. A pressure monitoring and control system for a water supply network as set forth in claim 8 wherein: the pressure sensor is characterized by further comprising an analog-digital conversion module used for performing analog-digital conversion on the pressure signals collected by the first pressure sensor, wherein the analog-digital conversion module comprises a first analog-digital converter and a second analog-digital converter, the first analog-digital converter is electrically connected with the first pressure sensor and the control module respectively, and the second analog-digital converter is electrically connected with the second pressure sensor and the control module respectively.

Technical Field

The invention belongs to the technical field of pipe network pressure monitoring, and particularly relates to a pressure monitoring control system for a water supply pipe network.

Background

Water supply pressure management of a water supply network is a key technical measure for reducing pipe network leakage and reducing pipe network explosion frequency. The water supply enterprise is at the water supply in-process to the water supply network point, and the water supply dispatch personnel need be according to the water pressure change condition of low reaches water supply pipe usually, through adjusting the outlet pressure who distributes decompression valve on each water supply pipe in the pipe network, realizes pipe network pressure control and management to the guarantee is located the balance and the water supply safety of each water supply pipe water supply pressure of water supply pipe low reaches. At present, the pipe network pressure of the water supply network mainly adopts two monitoring management modes of manual guarding and manual regulation of a pressure reducing valve and timing automatic regulation of the pressure reducing valve through a controller preset with a fixed target pressure value, and the pressure regulation and management are carried out on the water supply pressure of the water supply network. However, the two water pressure monitoring and management methods for the water supply network have the problem of low control precision of pipe network pressure regulation, and cannot realize the self-adaptive regulation of the pipe network pressure according to the change situation of the water supply pressure requirement of the downstream water supply pipeline of each pressure regulation point (the installation place of the pressure reducing valve), so that the method has higher risk of pipe network leakage and pipe network burst.

Disclosure of Invention

The invention aims to provide a pressure monitoring and controlling system for a water supply pipe network, and aims to solve the problems that in the prior art, the pressure regulation and control precision of a pipe network is low, the self-adaptive regulation of the pressure of the pipe network cannot be realized according to the change condition of the water supply pressure requirement of a water supply pipeline at the downstream of each pressure regulation point, and the risk of pipe network leakage and pipe network pipe explosion is high.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a pressure monitoring control system for a water supply pipe network, which includes a pressure monitoring module for monitoring water pressure in a water supply pipe downstream of a pressure regulation point in real time, a control module for analyzing and processing 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 regulation device for regulating the opening of a pressure reduction valve to regulate and control the water pressure downstream of the pressure regulation point, wherein the pressure monitoring module, the communication module, and the valve regulation device are respectively electrically connected to the control module.

Further, the valve adjusting device comprises a base, a straight stroke adjusting mechanism used for adjusting and controlling the opening degree of the pressure reducing valve, a driving motor and a transmission assembly, wherein the driving motor is used for driving the straight stroke adjusting mechanism to do straight reciprocating motion, and the driving motor is arranged on the base.

Further, the straight stroke adjusting mechanism comprises a nut sleeve, an adjusting screw engaged with the nut sleeve, and a limiting assembly for limiting circumferential rotation of the adjusting screw, the nut sleeve is rotatably mounted on the base, the limiting assembly is mounted on the base above the nut sleeve, the nut sleeve has a thread hole penetrating in the radial direction, the adjusting screw is arranged in the thread hole in a penetrating manner, the base is provided with a through hole for the adjusting screw to pass through, one end of the adjusting screw is movably connected with the limiting assembly, and the other end of the adjusting screw penetrates through the through hole and is connected with the pressure reducing valve; the transmission assembly comprises a driving gear and a driven gear in meshed fit with the driving gear, the driving gear is sleeved on an output shaft of the driving motor, and the driven gear is sleeved on the nut sleeve.

Furthermore, the nut sleeve comprises a convex ring and a necking sleeve connected with the convex ring, inner threads meshed with the adjusting screw are arranged in the necking sleeve, a plane bearing is arranged between the convex ring and the limiting assembly, and the adjusting screw penetrates through the plane bearing and the necking sleeve in sequence.

Furthermore, a bearing sleeve is sleeved on the necking sleeve, the driven gear is sleeved on the bearing sleeve, at least one positioning bearing is sleeved on the bearing sleeve, and the positioning bearings are sequentially arranged along the radial direction of the bearing sleeve.

Furthermore, a positioning sleeve used for positioning the adjusting screw rod is arranged on the base corresponding to the through hole, and the adjusting screw rod is inserted into the positioning sleeve in a sliding mode.

Further, the locating sleeve comprises a sleeve part and a fixing part which extends along the radial direction of the sleeve part, the fixing part is arranged on the base, one end, far away from the fixing part, of the sleeve part extends to the bottom end of the nut sleeve, and the adjusting screw rod is inserted into the sleeve in a sliding mode.

Further, the pressure monitoring module comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is used for monitoring and collecting the water pressure in the water supply pipeline in front of the pressure reducing valve in real time, the second pressure sensor is used for monitoring and collecting the water pressure in the water supply pipeline behind the pressure reducing valve in real time, and the first pressure sensor and the second pressure sensor are respectively electrically connected with the control module.

Further, still including the pressure damping module that is used for stabilizing fluid pressure and eliminates water hammer effect, the pressure damping module is including setting up the first pressure damper on the water supply pipe in relief pressure valve the place ahead and setting up the second pressure damper on the water supply pipe in relief pressure valve rear, first pressure damper with first pressure sensor links to each other, the second pressure damper with second pressure sensor links to each other.

The pressure sensor is used for collecting pressure signals, the analog-to-digital conversion module is used for performing analog-to-digital conversion on the pressure signals collected by the first pressure sensor, the analog-to-digital conversion module comprises a first analog-to-digital converter and a second analog-to-digital converter, the first analog-to-digital converter is electrically connected with the first pressure sensor and the control module respectively, and the second analog-to-digital converter is electrically connected with the second pressure sensor and the control module respectively.

The pressure monitoring control system for the water supply pipe network has the advantages that: compared with the prior art, the pressure monitoring control system for the water supply pipe network is provided with the pressure monitoring module which monitors and acquires the downstream pressure of the pressure adjusting point of the water supply pipe network in real time, and the communication module transmits the pressure data acquired by the pressure monitoring module to the cloud platform system in real time; the cloud platform system carries out statistical analysis on the pressure data collected in all time periods to form a curve of the pressure data changing along with the time fluctuation, and carries out comparison analysis according to the curve of the pressure data changing along with the time fluctuation and a critical water supply pressure data model (the critical water supply pressure data model is a mathematical model established according to the change situation of the water consumption of a water supply network point where the pressure adjusting point is located in each time period in the past), and real-timely converts the judgment result of the comparison analysis into a corresponding control signal to be returned to the control module through the communication module, the control module controls the valve adjusting device to finely adjust the pressure reducing valve of the pressure adjusting point according to the online real-time monitoring judgment result of the cloud platform system, so that the self-adaptive adjustment and the self-adaptation of the pressure of a pipe network are realized according to the change situation of the real-time water supply pressure requirement of a water supply pipeline at, the precision and the efficiency of the pressure regulation control of the pipe network are improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a flow chart of functional modules of a pressure monitoring control system for a water supply network according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a front view of a pressure monitoring and control system for a water supply network according to an embodiment of the present invention;

FIG. 3 is a schematic side view of a pressure monitoring and control system for a water supply network according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a pressure monitoring and control system for a water supply network according to an embodiment of the present invention;

FIG. 5 is a schematic illustration in partial cross-sectional view of a valve adjustment assembly according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a valve adjusting device according to an embodiment of the present invention;

fig. 7 is an exploded view of a valve adjusting device according to an embodiment of the present invention.

Wherein, in the drawings, the reference numerals are mainly as follows:

1-a pressure monitoring module; 11-a first pressure sensor; 12-a second pressure sensor; 2-a control module; 3-a cloud platform system; 4-a communication module; 5-valve regulating means; 51-a base; 52-a linear travel adjustment mechanism; 521-nut sleeves; 5211-a convex ring; 5212-a neck-reducing sleeve; 522-adjusting screw rod; 523-a spacing component; 5231-stop blocks; 5232-locating pins; 5233-a limiting groove; 53-drive motor; 54-a transmission assembly; 541-a driving gear; 542-driven gear; 55-plane bearings; 56-bearing sleeve; 57-positioning the bearing; 58-positioning sleeve; 581-sleeve part; 582-a fixation section; 6-a pressure damping module; 61-a first pressure damper; 62-a second pressure damper; 7-an analog-to-digital conversion module; 71-a first analog-to-digital converter; 72-a second analog-to-digital converter; 8-a locator; 9-pressure reducing valve.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 4 together, a pressure monitoring and controlling system for a water supply pipe network according to the present invention will now be described. The pressure monitoring control system for the water supply pipe network comprises a pressure monitoring module 1 for monitoring water pressure in a water supply pipeline at the downstream of a pressure adjusting point (where a pressure reducing valve 9 is installed) in real time, a control module 2 for analyzing and processing 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 adjusting device 5 for adjusting the opening degree of the pressure reducing valve 9 to adjust and control the water pressure at the downstream of the pressure adjusting point (where the pressure reducing valve 9 is installed), wherein the pressure monitoring module 1, the communication module 4 and the valve adjusting device 5 are respectively and electrically connected with the control module 2.

Specifically, the valve adjusting device 5 of the present embodiment employs an electrically controlled fully automatic valve adjusting device 5, and the pressure reducing valve 9 employs a pilot type pipe control valve whose opening degree (the degree of clutching at which the pressure reducing valve 9 is opened) can be accurately controlled.

The embodiment of the invention provides a basic working principle of a pressure monitoring control system for a water supply pipe network, which comprises the following steps: the demand of water supply pressure in the water supply pipeline at the downstream of the pressure adjusting point of the water supply network is fluctuated along with the change of water consumption of the water supply network point. Set up pressure monitoring module 1 real-time supervision in the water supply pipe and gather the pressure signal in the water supply pipe network pressure regulation point low reaches water supply pipe, and transmit pressure signal to control module 2, control module 2 carries out data analysis and processing to the pressure signal that pressure monitoring module 1 gathered, communication module 4 transmits the real-time pressure data after control module 2 analysis and processing to cloud platform system 3 in real time, cloud platform system 3 stores the pressure data of this pressure regulation point (the place of relief pressure valve 9 installation) low reaches and carries out statistical analysis to the pressure data of gathering in all time quantums, in order to form the curve of pressure data fluctuation along with time. The cloud platform system 3 judges whether the pressure value at the downstream of the pressure adjusting point (the installation place of the pressure reducing valve 9) accords with a critical water supply pressure data model according to the curve of the pressure data changing along with the fluctuation of time (the critical water supply pressure data model is a mathematical model established according to the change condition of the water consumption of the water supply network point where the pressure adjusting point is located in each past time period), converts the judgment result into a corresponding real-time control signal and then transmits the real-time control signal back to the control module 2 through the communication module 4, the control module 2 controls the valve adjusting device 5 according to the online real-time monitoring judgment result of the cloud platform system 3 to judge whether the pressure reducing valve 9 of the pressure adjusting point needs to be adjusted, thereby realizing the self-adaptive adjustment of the pressure of a pipe network according to the change condition of the real-time water supply pressure requirement of the downstream water, the precision and the efficiency of the pressure regulation control of the pipe network are improved.

Compared with the prior art, the pressure monitoring control system for the water supply pipe network is provided with the pressure monitoring module 1 for monitoring and acquiring the downstream pressure of the pressure regulating point of the water supply pipe network in real time, and the communication module 4 is used for transmitting the pressure data acquired by the pressure monitoring module 1 to the cloud platform system 3 in real time; the cloud platform system 3 carries out statistical analysis on the pressure data collected in all time periods to form a curve of the pressure data changing along with the time fluctuation, and carries out comparison analysis according to the curve of the pressure data changing along with the time fluctuation and a critical water supply pressure data model (the critical water supply pressure data model is a mathematical model established according to the change situation of the water consumption of the water supply network point where the pressure adjusting point is located in each time period in the past), and real-timely converts the judgment result of the comparison analysis into a corresponding control signal and transmits the control signal back to the control module 2 through the communication module 4, the control module 2 controls the valve adjusting device 5 to finely adjust the pressure reducing valve 9 of the pressure adjusting point according to the online real-time monitoring judgment result of the cloud platform system 3, thereby realizing the self-adaptive adjustment of the pipe network pressure according to the change situation of the real-time water supply pressure requirement of the, the risk of pipe network leakage and pipe network pipe explosion is reduced, and the precision and the efficiency of pipe network pressure regulation control are improved.

Further, referring to fig. 5 to 7 together, as an embodiment of the pressure monitoring and controlling system for a water supply network provided by the present invention, the valve adjusting device 5 includes a base 51, a straight stroke adjusting mechanism 52 for adjusting 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 straight stroke adjusting mechanism 52 to perform a linear reciprocating motion, wherein the driving motor 53 is disposed on the base 51; the straight stroke adjusting mechanism 52 comprises a nut sleeve 521, an adjusting screw 522 meshed and matched with the nut sleeve 521, and a limiting component 523 used for limiting the circumferential rotation of the adjusting screw 522, the nut sleeve 521 is rotatably installed on the base 51, the limiting component 523 is installed above the corresponding nut sleeve 521 on the base 51, the nut sleeve 521 is provided with a thread hole penetrating along the radial direction, the adjusting screw 522 is arranged in the thread hole of the nut sleeve 521 in a penetrating manner, the base 51 is provided with a through hole for the adjusting screw 522 to penetrate through, the through hole on the base 51 corresponds to the thread hole of the nut sleeve 521 in position, one end of the adjusting screw 522 is movably connected with the limiting component 523, and the other end of the adjusting screw 522 penetrates through the through hole on the base 51 and is used for being connected with an adjusting valve rod of the; 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.

Preferably, the driving motor 53 is a stepping motor which controls the angular displacement by controlling the number of pulses to achieve accurate positioning, and the driving motor 53 can drive the adjusting screw 522 to precisely adjust and control the opening of the pressure reducing valve 9, so as to precisely adjust and control the water pressure of a water supply pipeline (downstream of the pressure adjusting point) behind the pressure reducing valve 9.

The basic operating principle of the valve actuating device 5 of the present exemplary embodiment is: the driving motor 53 is powered on, the control module 2 sends a control command 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 mounted on the base 51 to rotate, and the adjusting screw 522 penetrating through the thread hole of the nut sleeve 521 cannot rotate circumferentially under the limiting action of the limiting piece, so that the adjusting screw 522 is prevented from generating large torque to damage the pressure reducing valve 9. Under the meshing fit of the thread hole of the nut sleeve 521 and the external thread of the adjusting screw rod 522, the adjusting screw rod 522 can make straight reciprocating stroke motion along the radial direction of the nut sleeve 521 only by controlling the forward and reverse rotation of the driving motor 53 through the control module 2, so that the pressure reducing valve 9 can be opened or closed through the adjusting screw rod 522 making straight stroke motion along the radial direction of the nut sleeve 521.

The valve adjusting device 5 of the embodiment drives the nut sleeve 521 rotatably mounted on the base 51 through the driving motor 53 to rotate, under the matching of the nut sleeve 521 and the adjusting screw 522, the adjusting screw 522 can make linear reciprocating straight-stroke motion along the radial direction of the nut sleeve 521 only by controlling the forward and reverse rotation of the driving motor 53 through the control module 2, the opening degree of the pressure reducing valve 9 mounted on the water supply pipeline is accurately adjusted and controlled, the purpose of accurately adjusting and controlling the water pressure of the water supply pipeline (downstream of a pressure adjusting point) behind the pressure reducing valve 9 is achieved, and the automation degree and the adjusting and controlling precision are high.

Further, referring to fig. 1 together, as an embodiment of the pressure monitoring and controlling system for a water supply pipe network provided by the present invention, the nut sleeve 521 includes a convex ring 5211 and a neck sleeve 5212 connected to the convex ring 5211, an inner thread engaged with the adjusting screw 522 is disposed in the neck sleeve 5212, a flat bearing is disposed between the convex ring 5211 and the limiting component 523, and the adjusting screw 522 sequentially penetrates through the flat bearing and the neck sleeve 5212. The plane bearing 55 is arranged between the convex ring 5211 and the limiting component 523 to reduce friction generated between the T-shaped nut sleeve 521 and the limiting component 523 when the T-shaped nut sleeve 521 rotates, enhance the flexibility of rotation of the nut sleeve 521, and improve the adjustment control precision of the automatic valve adjusting device.

Further, referring to fig. 6 together, as an embodiment of the pressure monitoring and controlling system for a water supply pipe 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, at least one positioning bearing 57 is sleeved on the bearing sleeve 56, and each positioning bearing 57 is sequentially arranged along the radial direction of the bearing sleeve 56. The necking sleeve 5212 of the nut sleeve 521 is provided with the bearing sleeve 56 and a plurality of positioning bearings 57 matched with the bearing sleeve 56, so that the rotation flexibility of the nut sleeve 521 can be enhanced, the concentricity of the nut sleeve 521 during rotation around the central shaft of the nut sleeve 521 can be ensured, slight angular deflection of the nut sleeve 521 during rotation is prevented, and the adjustment control precision of the automatic valve adjusting device is improved

Further, referring to fig. 5, as an embodiment of the pressure monitoring and controlling system for a water supply pipe network provided by the present invention, a positioning sleeve 58 for positioning an adjusting screw 522 is disposed on the base 51 at a position corresponding to the through hole, and the adjusting screw 522 is slidably inserted into a sleeve hole of the positioning sleeve 58 and connected to an adjusting valve rod of the pressure reducing valve 9, so as to ensure good concentricity of the adjusting screw 522 during linear movement and prevent the adjusting screw 522 from being connected to one end of the adjusting valve rod of the pressure reducing valve 9. Slight deflection occurs during linear stroke movement to influence the adjustment control precision of the automatic valve adjusting device, and meanwhile, the stability and the reliability of the adjustment control of the adjusting screw 522 on the pressure reducing valve 9 are enhanced.

Further, referring to fig. 5 together, as an embodiment of the pressure monitoring and controlling system for a water supply network provided by the present invention, the positioning sleeve 58 includes a sleeve part 581 and a fixing part 582 radially extending along the sleeve part 581, the fixing part 582 is disposed on the base 51, an end of the sleeve part 581 away from the fixing part 582 extends to a bottom end of the nut sleeve 521, and the adjusting screw 522 is slidably inserted into the sleeve part 581 of the positioning sleeve 58 and is connected to the adjusting valve rod of the pressure reducing valve 9, so as to ensure that the adjusting screw 522 has good concentricity with a central axis of the nut sleeve 521 during linear movement, prevent the nut sleeve 521 from slight angular deflection during rotation to affect the adjusting and controlling precision of the automatic valve adjusting device, and enhance the stable and reliable adjusting and controlling of the pressure reducing valve 9 by the adjusting screw 522.

Further, referring to fig. 6, as a specific embodiment of the pressure monitoring and controlling system for a water supply pipe network provided by the present invention, the limiting component 523 includes a limiting block 5231 and a positioning pin 5232 which are installed right above the corresponding nut sleeve 521 on the base 51, one end of the adjusting screw 522 far away from the base 51 is provided with the positioning pin 5232, the positioning pin 5232 is connected with 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, and the positioning pin 5232 is movably disposed 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 the central axis thereof but can only reciprocate linearly along the axial direction thereof, so that the adjusting screw 522 is prevented from generating large torque under the driving of the rotation of the nut sleeve 521 to cause sprain damage to the pressure reducing valve 9, and the stability, reliability and accuracy of the adjustment control of the adjusting screw 522 on the pressure reducing valve 9 are reduced.

Further, referring to fig. 4 together, as a specific embodiment of the pressure monitoring control system for a water supply network provided by the present invention, the pressure monitoring module 1 includes a first pressure sensor 11 for monitoring and collecting water pressure in a water supply pipeline (upstream of a pressure adjusting point) in front of the pressure reducing valve 9 in real time, and a second pressure sensor 12 for monitoring and collecting water pressure in a water supply pipeline (downstream of the pressure adjusting point) behind the pressure reducing valve 9 in real time, and the first pressure sensor 11 and the second pressure sensor 12 are electrically connected to the control module 2, respectively. Firstly, a first pressure sensor 11 monitors and acquires a first pressure in a water supply pipeline (upstream of a pressure adjusting point) in front of a pressure reducing valve 9 in real time, a second pressure sensor 12 monitors and acquires a second pressure in the water supply pipeline (downstream of the pressure adjusting point) behind the pressure reducing valve 9 in real time, and the first pressure and the second pressure acquired in real time are respectively transmitted to a control module 2; then the control module 2 compares the first pressure received in real time with the second pressure, if the first pressure value is greater than or equal to the second pressure value, the water flow and the water pressure in the water supply pipeline tend to be normal, the control module 2 sends a control command to control the valve adjusting device 5 to adjust the opening 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 adjusting point) reaches the pressure value required by the actual water supply pressure, the control module 2 sends a control command to control the valve adjusting device 5 to stop adjusting the opening of the pressure reducing valve 9, so that the water pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure adjusting point) is self-adapted and accurately adjusted in real time, and the balance of the water supply pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure adjusting point) and the water, the phenomenon that the water supply flow is insufficient or the water supply pressure is unbalanced in a water supply pipeline (downstream of a pressure adjusting point) behind the pressure reducing valve 9 is avoided. If, once during the adjustment of the opening degree of the pressure-reducing valve 9 by the valve adjusting means 5, an abnormal situation occurs in which the first pressure value is less than the second pressure value, it indicates that the opening of the pressure reducing valve 9 is immediately controlled by the valve adjusting device 5 after the abnormal pressure change condition is received by the control module 2 caused by the rapid and abnormal increase of the water pressure in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure adjusting point) due to the rapid change of the water flow in the water supply pipeline behind the pressure reducing valve 9 (downstream of the pressure adjusting point) caused by the high-pressure water flow in the water supply pipeline in front of the pressure reducing valve 9 (upstream of the pressure adjusting point) due to the opening and closing of the pressure reducing valve 9, the destructive water hammer effect on the water supply pipeline behind the pressure reducing valve 9 is avoided, and the water supply pipeline behind the pressure reducing valve 9 is effectively prevented from being exploded due to the continuous water hammer effect to cause great economic loss; after the water pressure in the water supply pipeline behind the pressure reducing valve 9 tends to be stable and the normal condition that the first pressure value is larger than or equal to the second pressure value is recovered, the control module 2 sends a control command to control the valve adjusting device 5 to adjust the opening 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 a preset target pressure value, and the control module 2 sends a control command to control the valve adjusting device 5 to stop adjusting the opening of the pressure reducing valve 9, so that the water pressure in the water supply pipeline behind the pressure reducing valve 9 is accurately adjusted in real time, and the balance of the water supply pressure of the water supply pipeline behind the pressure reducing valve 9 and the. In addition, set up first pressure sensor 11 and second pressure sensor 12 in the water supply pipe who is located relief pressure valve 9 the place ahead respectively with be located the water supply pipe behind relief pressure valve 9 in, through carrying out reference contrastive analysis with the water pressure (preceding pressure) in the place ahead of relief pressure valve 9 and the water pressure (back pressure) behind relief pressure valve 9, can also avoid adjusting the in-process to the aperture of relief pressure valve 9 at valve adjusting device 5, judge the instantaneous high pressure that "water hammer effect" caused easily as the misjudgement of the water pressure (back pressure) behind relief pressure valve 9, lead to the water pressure (back pressure) behind relief pressure valve 9 finally to be less than predetermined target pressure value, make appear in the water supply pipe behind relief pressure valve 9 that supply water flow is not enough or the unbalanced phenomenon of supply water pressure, thereby effectively improved the precision of supply water pressure regulation control.

Preferably, the first pressure sensor 11 and the second pressure sensor 12 respectively adopt high-precision solid-state strain gauge type pressure sensors, and the first pressure sensor 11 and the second pressure sensor 12 can also adopt silicon piezoresistive pressure probes to acquire pressure signals, and adopt the solid-state strain gauge type pressure sensors and the silicon piezoresistive pressure probes to acquire pressure signals, so that the measurement precision is high, and the measurement range is wide. Of course, the first pressure sensor 11 and the second pressure sensor 12 may also be other high-precision pressure sensors, which may be selected according to the actual measurement precision and the working requirement, and are not limited herein

Further, referring to fig. 4 together, as a specific embodiment of the pressure monitoring and controlling system for a water supply pipe network provided by the present invention, the pressure monitoring and controlling system 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. A first pressure damper 61 and a second pressure damper 62 are respectively arranged in a water supply pipeline positioned in front of the pressure reducing valve 9 and a water supply pipeline positioned behind the pressure reducing valve 9, after the water pressure in the water supply pipeline in front of the pressure reducing valve 9 and the water supply pipeline behind the pressure reducing valve 9 is stabilized and the water hammer effect is eliminated through the first pressure damper 61 and the second pressure damper 62, the first pressure sensor 11 and the second pressure sensor 12 are respectively used for monitoring and acquiring corresponding pressure data, the influence of large-amplitude water pressure fluctuation formed by the water hammer effect on the accuracy of the pressure data acquired by the first pressure sensor 11 and the second pressure sensor 12 is reduced, the accuracy of the pressure data acquisition of the first pressure sensor 11 and the second pressure sensor 12 is improved, and the accuracy of water supply pressure regulation and control is further improved; meanwhile, the first pressure sensor 11 and the second pressure sensor 12 can be effectively prevented from being damaged by destructive water hammer effect formed by water hammer effect, and the stability and reliability of the working performance of the pressure transmitter are enhanced.

Further, please refer to fig. 1 together, which is a specific embodiment of the pressure monitoring and controlling system for a water supply pipe network according to the present invention, further including an analog-to-digital conversion module 7 for performing analog-to-digital conversion on the pressure analog electrical signals collected by the first pressure sensor 11 and the second pressure sensor 12, respectively, where 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, and the second analog-to-digital converter 72 is electrically connected to the second pressure sensor 12 and the control module 2, respectively. In the embodiment, the pressure analog electric signals collected by the first pressure sensor 11 and the second pressure sensor 12 are respectively subjected to analog-to-digital conversion through the first analog-to-digital converter 71 and the second analog-to-digital converter 72, so that the pressure analog electric signals monitored and collected by the first pressure sensor 11 and the second pressure sensor 12 are quickly and accurately converted into the pressure data represented by numbers, the speed and the accuracy of pressure data processing and analysis of the central controller are improved, and the accuracy of the pressure monitoring and controlling system for the water supply network in regulating and controlling the water pressure in the water supply pipeline is improved.

Further, referring to fig. 1, as an embodiment of the pressure monitoring and controlling system for a water supply pipe network provided by the present invention, the system further includes a positioner 8 for positioning a pressure adjusting point (an installation location of the pressure reducing valve 9) of the pipe network, and the positioner 8 is electrically connected to the control module 2.

Specifically, the locator 8 includes a GPS/BDS module and a GPS/BDS antenna 81 electrically connected to the GPS/BDS module. During operation, based on GPS/BDS's locator 8 and carry out automatic positioning to the concrete position of pipe network pressure adjustment point (the installation site of relief pressure valve 9), and send the accurate position coordinate that locator 8 acquireed to cloud platform system 3 through communication module 4, for the geographical position of automatic positioning pipe network pressure adjustment point (the installation site of relief pressure valve 9) on monitored control system's map of supply water scheduling personnel, it does not have position information feedback function to have solved pipe network pressure adjustment point (the installation site of relief pressure valve 9), can't carry out accurate positioning to pipe network pressure adjustment point (the installation site of relief pressure valve 9), and bring inconvenience and difficult problem for the accurate regulation and control and the scientific scheduling management of the water supply pressure of target water supply pipe network.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.