CN108984873B - Water supply network real-time leakage detection method, device, system and storage medium - Google Patents
Water supply network real-time leakage detection method, device, system and storage medium Download PDFInfo
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Abstract
The invention discloses a method, equipment, a system and a storage medium for detecting real-time leakage of a water supply network, wherein the method comprises the following steps: based on user water consumption, inlet node pressure and pipeline parameters of a water supply network to be managed, a simulation model of the water supply network to be managed is established, pressure measurement values and flow measurement values of all nodes of the water supply network to be managed are obtained, pressure difference values between the pressure measurement values and the pressure simulation values of the nodes are calculated, flow difference values between the flow measurement values and the flow simulation values are calculated, the nodes, with the pressure difference values exceeding a preset pressure threshold and the flow difference values exceeding the preset flow threshold, are taken as target nodes, leakage conditions of the water supply network downstream of the target nodes are judged, real-time monitoring of pressure and flow is carried out, simulation data of the simulation model are compared with actual measurement data of the water supply network, and a leakage detection method combining flow analysis and pressure analysis is obtained, so that the period of leakage detection is shortened, and the accuracy of leakage detection is improved.
Description
Technical Field
The invention relates to the technical field of water supply systems, in particular to a method, equipment and a system for detecting real-time leakage of a water supply network and a storage medium.
Background
The underground water supply pipeline is often subject to pipeline aging or pipeline cracking caused by ground subsidence to generate water leakage, at present, the tail end of the water supply pipeline is provided with more methods for actively detecting the water supply pipeline except whether underground water leakage exists through manual meter reading analysis, such as a night flow method, a negative pressure wave method, a regional meter loading method, a related leakage detection method and the like, and most of the water supply pipeline is obtained through monitoring and analyzing pressure and flow historical data when the water supply pipeline operates, but the defects of long period, high false alarm rate, incapability of predicting the water leakage point, incapability of realizing real-time monitoring and the like exist from the water supply pipeline to the detection of the water leakage point.
At present, in the process of monitoring the flow of a water supply network, from digging pits and breaking pipes, installing the water meter, wherein the cost of all equipment and labor is 2-3 ten thousand yuan, the normal water use of residents is affected in the pipe breaking process, and the municipal water is generally not allowed to be broken, in addition, the municipal pipelines are buried underground, the road is required to be dug during installation, the engineering quantity is huge, and the method is also a main reason for difficult implementation of leakage detection at present.
Disclosure of Invention
The invention mainly aims to provide a method, equipment, a system and a storage medium for detecting the water supply network real-time leakage, and aims to solve the technical problems that in the detection process of the water supply network leakage in the prior art, the detection period is long, the false alarm rate is high, the real-time monitoring cannot be performed and the like.
In order to achieve the above purpose, the invention provides a method for detecting real-time leakage of a water supply network, which comprises the following steps:
establishing a simulation model of the water supply network to be managed based on the user water consumption, inlet node pressure and pipeline parameters of the water supply network to be managed;
obtaining pressure measurement values and flow measurement values of all nodes of the water supply network to be managed;
calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model;
and taking the node of which the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the preset flow threshold as a target node, and judging that a downstream water supply network of the target node has leakage.
Preferably, the building of the simulation model of the water supply network to be managed based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed specifically includes:
According to the pressure distribution of the water supply network to be managed and the water consumption condition of users, carrying out network partition on the water supply network to be managed;
based on ultrasonic flowmeter and pressure sensor installed in the divided pipe network area, obtaining pressure measurement value and flow measurement value of each node of the water supply pipe network to be managed;
and establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed.
Preferably, after the pressure measurement value and the flow measurement value of each node of the water supply network to be managed are obtained based on the ultrasonic flowmeter and the pressure sensor installed in the divided network area, the method further comprises:
based on the obtained flow measurement value and the pressure measurement value, checking a water leakage pipe section of the water supply network to be managed;
correspondingly, the establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed specifically comprises the following steps:
after the drain pipe section is checked, a simulation model of the water supply network to be managed is established according to the flow measurement value, the pressure measurement value and the pipeline parameter.
Preferably, after the drain pipe segment is checked, according to the flow measurement value, the pressure measurement value and the pipe parameter, after the simulation model of the water supply network to be managed is built, the method further comprises:
changing the running state of the water supply network to be managed, and obtaining pressure measurement values and flow measurement values of nodes in the water supply network to be managed;
matching the pressure measurement value with a pressure simulation value of the simulation model, and matching the flow measurement value with a flow measurement value of the simulation model;
and correcting the simulation model according to the matching result.
Preferably, the node where the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the flow difference is taken as a target node, and after determining that a leak condition exists in a water supply network downstream of the target node, the method further includes:
generating a flow difference map for each pipe segment based on a number of flow measurement values and flow simulation values corresponding to the flow measurement values, wherein the flow measurement values include a current flow measurement value and a number of historical flow measurement values, and the flow simulation values include a current flow simulation value corresponding to the current flow measurement value and a historical flow simulation value corresponding to the historical flow measurement value;
And comparing and analyzing the flow difference value diagram of the pipe section to determine a specific water leakage pipe section.
Preferably, after comparing and analyzing the flow difference graph of the pipe section to determine a specific water leakage pipe section, the method further includes:
and determining the time for repairing the leakage of the water leakage pipeline based on the determined leakage duration and leakage quantity of the water leakage pipeline.
Preferably, after the obtaining the pressure measurement value and the flow measurement value of each node of the water supply network to be managed, the method further includes:
based on the pressure requirement of the service water head at the least adverse point in the water supply network to be managed, the pressure of the water supply network to be managed is regulated, and water storage and water discharge operations of the reservoir are carried out within a preset time.
In addition, in order to achieve the above object, the present invention further provides a water supply network real-time leakage detection device, the device comprising: the water supply network real-time leakage detection method comprises the steps of a storage, a processor and a water supply network real-time leakage detection program which is stored in the storage and can run on the processor, wherein the water supply network real-time leakage detection program is executed by the processor.
In addition, in order to achieve the above object, the present invention further provides a water supply network real-time leakage detection system, which includes: the system comprises a model building module, a data acquisition module, a difference calculation module and a leakage judgment module;
the model building module is used for building a simulation model of the water supply network to be managed based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed;
the data acquisition module is used for acquiring pressure measurement values and flow measurement values of all nodes of the water supply network to be managed;
the difference value calculation module is used for calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model;
the leakage judging module is used for taking the node of which the pressure difference exceeds a preset pressure threshold value and the flow difference exceeds the flow difference as a target node and judging that a downstream water supply network of the target node has leakage.
In addition, in order to achieve the above object, the present invention further provides a storage medium, on which a water supply network real-time leakage detection program is stored, which when executed by a processor, implements the steps of the water supply network real-time leakage detection method described above.
According to the method, a simulation model of the water supply network to be managed is established based on the user water consumption, inlet node pressure and pipeline parameters of the water supply network to be managed, pressure measured values and flow measured values of all nodes of the water supply network to be managed are obtained, pressure difference values between the pressure measured values and the pressure simulated values of the nodes are calculated, flow difference values between the flow measured values and the flow simulated values are used as target nodes, the pressure difference values of which exceed a preset pressure threshold and the flow difference values of which exceed the preset flow threshold, the condition that leakage exists in the water supply network downstream of the target nodes is judged, the simulation data of the simulation model are compared with the measured data of the water supply network through real-time monitoring of pressure and flow, and a leakage detection method combining flow analysis and pressure analysis is obtained, so that the period of leakage detection is shortened, and the accuracy of leakage detection is improved.
Drawings
FIG. 1 is a schematic diagram of a real-time leakage detection device for a water supply network in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an operating environment of the water supply network real-time leakage detection device of the present invention;
FIG. 3 is a schematic flow chart of a first embodiment of a method for detecting real-time leakage of a water supply network according to the present invention;
FIG. 4 is a schematic flow chart of a second embodiment of a method for detecting real-time leakage of a water supply network according to the present invention;
FIG. 5 is a schematic flow chart of a third embodiment of a method for detecting real-time leakage of a water supply network according to the present invention;
FIG. 6 is a schematic flow chart of a fourth embodiment of a method for detecting real-time leakage of a water supply network according to the present invention;
fig. 7 is a functional block diagram of a first embodiment of a real-time leak detection system for a water supply network according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a real-time leakage detection device for a water supply network in a hardware operation environment according to an embodiment of the present invention.
As shown in fig. 1, the water supply network real-time leakage detection apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display (Display), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage server separate from the aforementioned processor 1001.
It will be appreciated by those skilled in the art that the configuration shown in fig. 1 does not constitute a limitation of the water supply network real-time leak detection apparatus, and may include more or fewer components than shown, or may combine certain components, or may have a different arrangement of components.
The specific operation environment of the water supply network real-time leakage detection device can refer to fig. 2, the low-power-consumption collector collects test data of the monitoring device such as the ultrasonic flowmeter pressure sensor, the remote transmission is realized to the detection device through the repeater (mainly RTU), and the detection device performs various processing analysis on the data and then realizes various applications. It may be understood that, in order to make each module better cooperate, the detection device may be further divided into a transmission layer, a platform layer and an application, where the transmission layer may include a mobile network, a government private network, a control private network, an acquisition private network, a public ethernet, and the platform layer may include a unified data monitoring platform, a unified data exchange platform, a unified data service platform, a unified GIS service platform, and a model management platform, and the application layer may include GIS monitoring, site data monitoring, analog monitoring, statistical analysis, anomaly alarm, site management, intelligent scheduling, and emergency command, and it may be understood that this is not a limitation on the detection device and internal structures of the device, and may include more or less parts than those illustrated, and different internal functional divisions.
As shown in fig. 1, the memory 1005, which is a storage medium, may include an operating system, a network communication module, a user interface module, and a water supply network real-time leakage detection program.
The water supply network real-time leakage detection device invokes a water supply network real-time leakage detection program stored in the memory 1005 through the processor 1001, and performs the following operations:
establishing a simulation model of the water supply network to be managed based on the user water consumption, inlet node pressure and pipeline parameters of the water supply network to be managed;
obtaining pressure measurement values and flow measurement values of all nodes of the water supply network to be managed;
calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model;
and taking the node of which the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the preset flow threshold as a target node, and judging that a downstream water supply network of the target node has leakage.
Further, the processor 1001 may call the water supply network real-time leak detection program stored in the memory 1005, and further perform the following operations:
According to the pressure distribution of the water supply network to be managed and the water consumption condition of users, carrying out network partition on the water supply network to be managed;
based on ultrasonic flowmeter and pressure sensor installed in the divided pipe network area, obtaining pressure measurement value and flow measurement value of each node of the water supply pipe network to be managed;
and establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed.
Further, the processor 1001 may call the water supply network real-time leak detection program stored in the memory 1005, and further perform the following operations:
based on the obtained flow measurement value and the pressure measurement value, checking a water leakage pipe section of the water supply network to be managed;
correspondingly, the establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed specifically comprises the following steps:
after the drain pipe section is checked, a simulation model of the water supply network to be managed is established according to the flow measurement value, the pressure measurement value and the pipeline parameter.
Further, the processor 1001 may call the water supply network real-time leak detection program stored in the memory 1005, and further perform the following operations:
Changing the running state of the water supply network to be managed, and obtaining pressure measurement values and flow measurement values of nodes in the water supply network to be managed;
matching the pressure measurement value with a pressure simulation value of the simulation model, and matching the flow measurement value with a flow measurement value of the simulation model;
and correcting the simulation model according to the matching result.
Further, the processor 1001 may call the water supply network real-time leak detection program stored in the memory 1005, and further perform the following operations:
generating a flow difference map for each pipe segment based on a number of flow measurement values and flow simulation values corresponding to the flow measurement values, wherein the flow measurement values include a current flow measurement value and a number of historical flow measurement values, and the flow simulation values include a current flow simulation value corresponding to the current flow measurement value and a historical flow simulation value corresponding to the historical flow measurement value;
and comparing and analyzing the flow difference value diagram of the pipe section to determine a specific water leakage pipe section.
Further, the processor 1001 may call the water supply network real-time leak detection program stored in the memory 1005, and further perform the following operations:
And determining the time for repairing the leakage of the water leakage pipeline based on the determined leakage duration and leakage quantity of the water leakage pipeline.
Further, the processor 1001 may call the water supply network real-time leak detection program stored in the memory 1005, and further perform the following operations:
based on the pressure requirement of the service water head at the least adverse point in the water supply network to be managed, the pressure of the water supply network to be managed is regulated, and water storage and water discharge operations of the reservoir are carried out within a preset time.
In this embodiment, a simulation model of the water supply network to be managed is established based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed, a pressure measurement value and a flow measurement value of each node of the water supply network to be managed are obtained, a pressure difference value between the pressure measurement value and the pressure simulation value of each node is calculated, a flow difference value between the flow measurement value and the flow simulation value is used as a target node, a node, in which the pressure difference value exceeds a preset pressure threshold and the flow difference value exceeds the preset flow threshold, of the downstream water supply network of the target node is judged to have leakage conditions, and simulation data of the simulation model and actual measurement data of the water supply network are compared through real-time monitoring of pressure and flow to obtain a leakage detection method combining flow analysis and pressure analysis, so that the period of leakage detection is shortened, and the accuracy of leakage detection is improved.
Based on the hardware structure, the embodiment of the method for detecting the real-time leakage of the water supply network is provided.
Referring to fig. 3, fig. 3 is a schematic flow chart of a first embodiment of a method for detecting real-time leakage of a water supply network according to the present invention.
In a first embodiment, the method for detecting real-time leakage of a water supply network includes the following steps:
s10: and establishing a simulation model of the water supply network to be managed based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed.
It should be noted that, the Water supply network to be managed may be a municipal Water supply network, or a district Water supply network, which is an actual model of the Water supply network, and the simulation model is built based on the actual model, and the software for building the simulation model may be EPANET, water CAD or other software, which is not limited in this embodiment.
It can be understood that the pipeline parameters are the data of pipe diameter, pipe length, nodes, elevation and the like of the actual water supply network, and the user water consumption, inlet node pressure and pipeline parameters of the actual water supply network are the basis for establishing the simulation model of the water supply network to be managed, so that the water supply network to be managed needs to be surveyed, the basic data of the actual water supply network is collected, the site environment of the network is familiar, and the pressure and flow distribution condition of the network are known, thereby obtaining the pipeline parameters and the operation parameters of the water supply network.
S20: and obtaining the pressure measured value and the flow measured value of each node of the water supply network to be managed.
And selecting some nodes from the water supply pipe to be managed, installing a pressure sensor and a flow sensor, and acquiring pressure measurement values and flow measurement values of all nodes of the water supply pipe to be managed in real time.
It will be appreciated that in a water supply network, the pressure at each node is different, and a certain section of the network has the same flow measurement value, so that the pressure sensor measures the pressure at a specific node, the flow sensor measures the flow value at a certain section of the network, and the pressure measurement value and the flow measurement value at a node refer to the pressure measurement value displayed by the pressure sensor installed at a certain node and the flow measurement value displayed by the flow sensor.
In a specific implementation, an ultrasonic flow meter may be used for measuring the flow rate, and other types of flow sensors may be used, which is not limited in this embodiment.
In this embodiment, the pressure values of each node of the water supply network to be managed may be obtained in real time, and based on the obtained pressure measurement values, the water supply network to be managed may be further partitioned into high pressure and low pressure, and the pressure of each node is analyzed in combination with the actual situation of each node of the water supply network to be managed, so as to determine whether each node in the water supply network to be managed can bear high pressure for a long time, so as to optimize the area with unreasonable pressure distribution in the water supply network to be managed.
S30: and calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model.
It should be noted that, when the pressure measured value at a certain node does not match the pressure analog value, it does not represent that there is a certain leakage condition of the pipe network at this time, which may be caused by the pressure change of the whole pipe network.
In this embodiment, by monitoring the pressure and the flow of the water supply network in real time, the simulation data obtained by the simulation model is compared with the measured data of the water supply network, so as to obtain the leakage detection method combining flow analysis and pressure analysis.
S40: and taking the node of which the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the preset flow threshold as a target node, and judging that a downstream water supply network of the target node has leakage.
In this embodiment, a simulation model of the water supply network to be managed is established based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed, a pressure measurement value and a flow measurement value of each node of the water supply network to be managed are obtained, a pressure difference value between the pressure measurement value and the pressure simulation value of each node is calculated, a flow difference value between the flow measurement value and the flow simulation value is used as a target node, a node, in which the pressure difference value exceeds a preset pressure threshold and the flow difference value exceeds the preset flow threshold, of the downstream water supply network of the target node is judged to have leakage conditions, and simulation data of the simulation model and actual measurement data of the water supply network are compared through real-time monitoring of pressure and flow to obtain a leakage detection method combining flow analysis and pressure analysis, so that the period of leakage detection is shortened, and the accuracy of leakage detection is improved.
Referring to fig. 4, fig. 4 is a schematic flow chart of a second embodiment of the method for detecting real-time leakage of a water supply network according to the present invention, and based on the embodiment shown in fig. 2, the second embodiment of the method for detecting real-time leakage of a water supply network according to the present invention is proposed.
In the second embodiment, step S10 specifically includes:
s101: and carrying out pipe network partition on the water supply network to be managed according to the pressure distribution of the water supply network to be managed and the water consumption condition of users.
When the water supply network to be managed is partitioned, the method of independent metering partition (District Metering Area, DMA) can be adopted to partition the water supply network according to the pressure and flow distribution condition of the water supply network to be managed.
S102: and obtaining pressure measurement values and flow measurement values of all nodes of the water supply network to be managed based on ultrasonic flowmeter and pressure sensor installed in the divided pipe network area.
The installation of the pressure sensor and the ultrasonic flowmeter can be performed at the surveyed nodes based on the divided pipe network areas. The installation direction is noted when the pressure sensor is installed, the ultrasonic flowmeter can be installed according to the relevant specifications in the water supply and drainage design manual, and an appropriate installation method is selected according to the pipe diameter, so that the installed pressure sensor and ultrasonic flowmeter have accurate measurement effects, and measurement errors are reduced.
Through pressure sensor and ultrasonic flowmeter installed on the delivery pipe net, can carry out real-time collection to the operating parameter of water supply network to carry out real-time supervision to the running state of water supply network.
S103: and establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed.
After the pressure sensor and the flow sensor are installed, a night minimum flow method, a main pipe flow analysis method, a sound leakage detection method and the like can be adopted, the water leakage point of the water supply network to be managed is checked based on the detected pressure and flow data, the water leakage phenomenon of the water supply network to be managed is avoided after the detection, the data acquired after the detection is the data of the normal operation of the network, and the authenticity and the reliability of the established simulation model can be ensured.
Further, after the simulation model of the water supply network to be managed is built, the running state, namely running parameters, of the water supply network to be managed can be changed, a pressure measured value and a flow measured value of a certain node in the water supply network to be managed are obtained, the pressure measured value is matched with a pressure simulation value of the simulation model, the flow measured value is matched with the pressure simulation value of the simulation model, and when the matching fails, the simulation model is corrected.
After the simulation model is established, the simulation model needs to be checked, so that the simulation model has a higher fitting effect on an actual pipe network under various different operation conditions of the water supply pipe network.
In a specific implementation, the water consumption of a certain area or a plurality of users can be changed, so that the effect of changing the operation parameters of the water supply network to be managed is achieved, the changed data are input into the simulation model, so that a changed pressure simulation value is obtained, and when the pressure simulation value is not matched with the pressure measurement value, the simulation model is required to be corrected.
It should be noted that, checking the simulation model is a key step of successfully managing the water supply network to realize real-time analysis of the running condition of the network, and it is necessary to check each branch pipe and each main pipe multiple times, and after checking the water supply network, it is unnecessary to repeatedly check in the later monitoring.
In this embodiment, by reasonably partitioning the water supply network to be managed, arranging the sensors, checking leakage points of the water supply network to be managed, building a simulation model of the water supply network to be managed based on a normal water supply network to be managed, checking the simulation model after building the simulation model, ensuring that the built simulation model has higher authenticity and reliability, and simultaneously having higher fitting degree with the water supply network to be managed, thereby timely finding out water leakage points, positioning the water leakage points, taking measures to maintain the water leakage points, and greatly shortening the maintenance period of the water leakage points.
Referring to fig. 5, fig. 5 is a schematic flow chart of a third embodiment of the method for detecting real-time leakage of a water supply network according to the present invention, and based on the embodiment shown in fig. 2, a third embodiment of the method for detecting real-time leakage of a water supply network according to the present invention is provided.
In a third embodiment, after step S10, the method further comprises:
s50: and generating a flow difference map of each pipe section based on a plurality of flow measurement values and flow simulation values corresponding to the flow measurement values, wherein the flow measurement values comprise current flow measurement values and a plurality of historical flow measurement values, and the flow simulation values comprise current flow simulation values corresponding to the current flow measurement values and historical flow simulation values corresponding to the historical flow measurement values.
It will be appreciated that by setting a pressure difference threshold between the pressure measurement value and the pressure simulation value and a flow difference threshold between the flow measurement value and the flow simulation value, it is possible to preliminarily determine that there is an abnormality such as a leak in the water supply pipe network, but it is not possible to accurately locate a specific leak pipe section.
Therefore, a flow rate difference map of each pipe section can be generated based on a large number of flow rate measurement values and flow rate simulation values corresponding to the flow rate measurement values, where the flow rate difference map refers to a time-dependent map of the difference between the flow rate measurement values and the flow rate simulation values.
S60: and comparing and analyzing the flow difference value diagram of the pipe section to determine a specific water leakage pipe section.
In a specific implementation, the flow difference value diagram of each pipe section may be compared and analyzed, so as to determine a specific water leakage pipe section, for example, in a certain pipe network, four flow sensors are installed at four nodes, and may be represented by L1, L2, L3 and L4, where the four flow sensors are sequentially located from upstream to downstream positions of the water supply pipe to be managed, and if the flow value diagrams of the four nodes are compared, the obtained information is: from the time point K, the downstream of the L1 is in leakage condition; the downstream of L2 is in leakage condition at the time point K; no leakage occurs downstream of L3 after the K time point; the downstream of the L4 has no leakage after the K time point, so that the occurrence of the water leakage pipe section between the nodes L1 and L3 can be judged, and further, whether the specific water leakage pipe section is between the L1 and L2 or between the L2 and L3 is determined according to the water leakage amount between the two pipe sections.
It should be noted that, because the municipal water supply network has a relatively large scale, there may be a case of pipe bursting and a plurality of leaking pipe sections, the duration and the amount of leakage may be determined based on the flow difference diagram of each pipe section, and the modification sequence of each leaking pipe section may be reasonably arranged according to the predicted repair time and repair cost, so as to determine the specific modification time.
In this embodiment, by establishing a difference chart of the flow measurement value and the flow simulation value, the pipe section with abnormal data can be rapidly located by analyzing the difference value, so that the period of leakage detection is greatly shortened.
Referring to fig. 6, fig. 6 is a schematic flow chart of a fourth embodiment of the method for detecting real-time leakage of a water supply network according to the present invention, and based on the embodiment shown in fig. 2, a fourth embodiment of the method for detecting real-time leakage of a water supply network according to the present invention is provided.
In a fourth embodiment, after step S10, the method further comprises:
s70: based on the pressure requirement of the service water head at the least adverse point in the water supply network to be managed, the pressure of the water supply network to be managed is regulated, and water storage and water discharge operations of the reservoir are carried out within a preset time.
It should be noted that the service water head of the most unfavorable point refers to the water using point which is farthest from the water plant or highest from the ground and has a higher number of building layers in the water supply area, and as long as the water pressure requirement of the water using point can be met, the water heads of all the water using points in the water supply area can be in a normal water outlet state.
It will be appreciated that the higher the water supply network pressure, the greater the leakage, the lower the pressure and the less leakage. The municipal pipe network has large water demand in daytime, large load, large pressure at the upstream of the pipe network, increased pipe bursting probability, reduced service life of the pipe network, small water consumption at night, high pipe network pressure and large leakage. Therefore, in this embodiment, under the condition of meeting the lowest service head of the user at the least adverse point, the pressure of the pipe network is reduced as much as possible, and meanwhile, water storage and water drainage are performed at a proper time, for example, water storage at night and water drainage at daytime are performed to relieve the load of the pipe network, so as to achieve the purposes of reducing leakage and optimizing the operation of the pipe network.
In the embodiment, the pressure of the pipe network is reduced as much as possible under the condition of meeting the service head of the least favorable point, and meanwhile, the water storage and drainage time of the reservoir is reasonably arranged, so that the load of the pipe network is relieved, and the purposes of reducing leakage and optimizing the operation of the pipe network are achieved.
Referring to fig. 7, fig. 7 is a functional block diagram of a first embodiment of a real-time leakage detection system for a water supply network according to the present invention, and the first embodiment of the real-time leakage detection system for a water supply network according to the present invention is proposed based on a real-time leakage detection method for a water supply network.
In this embodiment, the water supply network real-time leakage detection system includes: the system comprises a model building module 10, a data acquisition module 20, a difference calculation module 30 and a leakage judgment module 40;
the model building module 10 is configured to build a simulation model of the water supply network to be managed based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed.
It should be noted that, the Water supply network to be managed may be a municipal Water supply network, or a district Water supply network, which is an actual model of the Water supply network, and the simulation model is built based on the actual model, and the software for building the simulation model may be EPANET, water CAD or other software, which is not limited in this embodiment.
It can be understood that the pipeline parameters are the data of pipe diameter, pipe length, nodes, elevation and the like of the actual water supply network, and the user water consumption, inlet node pressure and pipeline parameters are the basis for establishing a simulation model of the water supply network to be managed, so that the water supply network to be managed needs to be surveyed, basic data of the actual water supply network is collected, the site environment of the network is familiar, and the pressure and flow distribution condition of the network is known, thereby obtaining the pipeline parameters and the operation parameters of the water supply network.
The data acquisition module 20 is configured to acquire pressure measurement values and flow measurement values of each node of the water supply network to be managed.
And selecting some nodes from the water supply pipe to be managed, installing a pressure sensor and a flow sensor, and acquiring pressure measurement values and flow measurement values of all nodes of the water supply pipe to be managed in real time.
It will be appreciated that in a water supply network, the pressure at each node is different, and a certain section of the network has the same flow measurement value, so that the pressure sensor measures the pressure at a specific node, the flow sensor measures the flow value at a certain section of the network, and the pressure measurement value and the flow measurement value at a node refer to the pressure measurement value displayed by the pressure sensor installed at a certain node and the flow measurement value displayed by the flow sensor.
In a specific implementation, an ultrasonic flow meter may be used for measuring the flow rate, and other types of flow sensors may be used, which is not limited in this embodiment.
In this embodiment, the pressure values of each node of the water supply network to be managed may be obtained in real time, and based on the obtained pressure measurement values, the water supply network to be managed may be further partitioned into high pressure and low pressure, and the pressure of each node is analyzed in combination with the actual situation of each node of the water supply network to be managed, so as to determine whether each node in the water supply network to be managed can bear high pressure for a long time, so as to optimize the area with unreasonable pressure distribution in the water supply network to be managed.
The difference calculating module 30 is configured to calculate a pressure difference between the pressure measurement value of the node and the pressure simulation value of the simulation model, and a flow difference between the flow measurement value and the flow simulation value of the simulation model.
It should be noted that, when the pressure measured value at a certain node does not match the pressure analog value, it does not represent that there is a certain leakage condition of the pipe network at this time, which may be caused by the pressure change of the whole pipe network.
In this embodiment, by monitoring the pressure and the flow of the water supply network in real time, the simulation data obtained by the simulation model is compared with the measured data of the water supply network, so as to obtain the leakage detection method combining flow analysis and pressure analysis.
The leakage determination module 40 is configured to determine that a leakage condition exists in a water supply network downstream of the target node by using, as the target node, a node where the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the flow difference.
In this embodiment, a simulation model of the water supply network to be managed is established based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed, a pressure measurement value and a flow measurement value of each node of the water supply network to be managed are obtained, a pressure difference value between the pressure measurement value and the pressure simulation value of each node is calculated, a flow difference value between the flow measurement value and the flow simulation value is used as a target node, a node, in which the pressure difference value exceeds a preset pressure threshold and the flow difference value exceeds the preset flow threshold, of the downstream water supply network of the target node is judged to have leakage conditions, and simulation data of the simulation model and actual measurement data of the water supply network are compared through real-time monitoring of pressure and flow to obtain a leakage detection method combining flow analysis and pressure analysis, so that the period of leakage detection is shortened, and the accuracy of leakage detection is improved.
In addition, the embodiment of the invention also provides a storage medium, wherein the storage medium stores a water supply network leakage detection program, and the water supply network leakage detection program realizes the following operations when being executed by a processor:
establishing a simulation model of the water supply network to be managed based on the user water consumption, inlet node pressure and pipeline parameters of the water supply network to be managed;
obtaining pressure measurement values and flow measurement values of all nodes of the water supply network to be managed;
calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model;
and taking the node of which the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the preset flow threshold as a target node, and judging that a downstream water supply network of the target node has leakage.
Further, the water supply network leakage detection program further realizes the following operations when executed by the processor:
according to the pressure distribution of the water supply network to be managed and the water consumption condition of users, carrying out network partition on the water supply network to be managed;
based on ultrasonic flowmeter and pressure sensor installed in the divided pipe network area, obtaining pressure measurement value and flow measurement value of each node of the water supply pipe network to be managed;
And establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed.
Further, the water supply network leakage detection program further realizes the following operations when executed by the processor:
based on the obtained flow measurement value and the pressure measurement value, checking a water leakage pipe section of the water supply network to be managed;
correspondingly, the establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed specifically comprises the following steps:
after the drain pipe section is checked, a simulation model of the water supply network to be managed is established according to the flow measurement value, the pressure measurement value and the pipeline parameter.
Further, the water supply network leakage detection program further realizes the following operations when executed by the processor:
changing the running state of the water supply network to be managed, and obtaining pressure measurement values and flow measurement values of nodes in the water supply network to be managed;
matching the pressure measurement value with a pressure simulation value of the simulation model, and matching the flow measurement value with a flow measurement value of the simulation model;
And correcting the simulation model according to the matching result.
Further, the water supply network leakage detection program further realizes the following operations when executed by the processor:
generating a flow difference map for each pipe segment based on a number of flow measurement values and flow simulation values corresponding to the flow measurement values, wherein the flow measurement values include a current flow measurement value and a number of historical flow measurement values, and the flow simulation values include a current flow simulation value corresponding to the current flow measurement value and a historical flow simulation value corresponding to the historical flow measurement value;
and comparing and analyzing the flow difference value diagram of the pipe section to determine a specific water leakage pipe section.
Further, the water supply network leakage detection program further realizes the following operations when executed by the processor:
and determining the time for repairing the leakage of the water leakage pipeline based on the determined leakage duration and leakage quantity of the water leakage pipeline.
Further, the water supply network leakage detection program further realizes the following operations when executed by the processor:
based on the pressure requirement of the service water head at the least adverse point in the water supply network to be managed, the pressure of the water supply network to be managed is regulated, and water storage and water discharge operations of the reservoir are carried out within a preset time.
In this embodiment, a simulation model of the water supply network to be managed is established based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed, a pressure measurement value and a flow measurement value of each node of the water supply network to be managed are obtained, a pressure difference value between the pressure measurement value and the pressure simulation value of each node is calculated, a flow difference value between the flow measurement value and the flow simulation value is used as a target node, a node, in which the pressure difference value exceeds a preset pressure threshold and the flow difference value exceeds the preset flow threshold, of the downstream water supply network of the target node is judged to have leakage conditions, and simulation data of the simulation model and actual measurement data of the water supply network are compared through real-time monitoring of pressure and flow to obtain a leakage detection method combining flow analysis and pressure analysis, so that the period of leakage detection is shortened, and the accuracy of leakage detection is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
The use of the words first, second, third, etc. do not denote any order, and the words may be interpreted as names.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (7)
1. The method for detecting the real-time leakage of the water supply network is characterized by comprising the following steps of:
establishing a simulation model of the water supply network to be managed based on the user water consumption, inlet node pressure and pipeline parameters of the water supply network to be managed;
obtaining pressure measurement values and flow measurement values of all nodes of the water supply network to be managed;
calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model;
taking a node of which the pressure difference exceeds a preset pressure threshold and the flow difference exceeds a preset flow threshold as a target node, and judging that a downstream water supply network of the target node has leakage;
the method for establishing the simulation model of the water supply network to be managed based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed specifically comprises the following steps:
according to the pressure distribution of the water supply network to be managed and the water consumption condition of users, carrying out network partition on the water supply network to be managed;
based on ultrasonic flowmeter and pressure sensor installed in the divided pipe network area, obtaining pressure measurement value and flow measurement value of each node of the water supply pipe network to be managed;
Establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed;
after the simulation model of the water supply network to be managed is established, the method further comprises the following steps:
obtaining a pressure partition result of the water supply network to be managed according to the pressure measured value of each node of the water supply network to be managed, wherein the pressure partition result comprises a high-pressure area and a low-pressure area;
analyzing the pressure of each node by combining the actual situation of each node of the water supply network to be managed so as to judge whether each node of the water supply network to be managed can bear high pressure for a long time;
optimizing the subareas with unreasonable pressure distribution in the water supply network to be managed according to the judging result;
the method further comprises the steps of after the node, of which the pressure difference exceeds a preset pressure threshold and the flow difference exceeds the preset flow threshold, is taken as a target node and the condition that the downstream water supply network of the target node is leaked is judged:
generating a flow difference map for each pipe segment based on a number of flow measurement values and flow simulation values corresponding to the flow measurement values, wherein the flow measurement values include a current flow measurement value and a number of historical flow measurement values, and the flow simulation values include a current flow simulation value corresponding to the current flow measurement value and a historical flow simulation value corresponding to the historical flow measurement value;
Comparing and analyzing the flow difference value diagram of the pipe sections to determine specific water leakage pipe sections and the leakage duration and the leakage quantity of each water leakage pipe section;
based on the determined leakage duration and leakage quantity of the water leakage pipe section, determining the estimated repair duration for performing leakage repair on the water leakage pipe;
and according to the estimated repair time length and the estimated repair cost, arranging the modification sequence of each leakage pipe section, and determining the modification time of each leakage pipe section.
2. The method of claim 1, wherein after obtaining the pressure measurement value and the flow measurement value of each node of the water supply network to be managed based on the ultrasonic flowmeter and the pressure sensor installed in the divided network area, the method further comprises:
based on the obtained flow measurement value and the pressure measurement value, checking a water leakage pipe section of the water supply network to be managed;
correspondingly, the establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed specifically comprises the following steps:
after the drain pipe section is checked, a simulation model of the water supply network to be managed is established according to the flow measurement value, the pressure measurement value and the pipeline parameter.
3. The method of claim 2, wherein after the drain pipe segment is inspected, and the simulation model of the water supply network to be managed is built based on the flow measurement value, the pressure measurement value, and the pipe parameter, the method further comprises:
changing the running state of the water supply network to be managed, and obtaining pressure measurement values and flow measurement values of nodes in the water supply network to be managed;
matching the pressure measurement value with a pressure simulation value of the simulation model, and matching the flow measurement value with a flow measurement value of the simulation model;
and correcting the simulation model according to the matching result.
4. The method of claim 1, wherein after the obtaining the pressure measurement value and the flow measurement value of each node of the water supply network to be managed, the method further comprises:
based on the pressure requirement of the service water head at the least adverse point in the water supply network to be managed, the pressure of the water supply network to be managed is regulated, and water storage and water discharge operations of the reservoir are carried out within a preset time.
5. The utility model provides a real-time leakage check out test set of water supply network, its characterized in that, water supply network leakage check out test set includes: a memory, a processor and a water supply network real-time leak detection program stored on the memory and operable on the processor, the water supply network real-time leak detection program being configured to implement the steps of the water supply network real-time leak detection method according to any one of claims 1 to 4.
6. The utility model provides a real-time leakage detection system of water supply network, its characterized in that, water supply network real-time leakage detection system includes: the system comprises a model building module, a data acquisition module, a difference calculation module and a leakage judgment module;
the model building module is used for building a simulation model of the water supply network to be managed based on the user water consumption, the inlet node pressure and the pipeline parameters of the water supply network to be managed;
the data acquisition module is used for acquiring pressure measurement values and flow measurement values of all nodes of the water supply network to be managed;
the difference value calculation module is used for calculating a pressure difference value between the pressure measured value of the node and the pressure simulation value of the simulation model, and a flow difference value between the flow measured value and the flow simulation value of the simulation model;
the leakage judging module is used for taking a node, of which the pressure difference exceeds a preset pressure threshold value and the flow difference exceeds a preset flow threshold value, as a target node and judging that a downstream water supply network of the target node has leakage;
the model building module is further used for partitioning the water supply network to be managed according to the pressure distribution of the water supply network to be managed and the water consumption condition of users; based on ultrasonic flowmeter and pressure sensor installed in the divided pipe network area, obtaining pressure measurement value and flow measurement value of each node of the water supply pipe network to be managed; establishing a simulation model of the water supply network to be managed according to the flow measurement value, the pressure measurement value and the pipeline parameter of the water supply network to be managed;
The data acquisition module is further used for acquiring a pressure partition result of the water supply network to be managed according to the pressure measured value of each node of the water supply network to be managed, wherein the pressure partition result comprises a high-pressure area and a low-pressure area; analyzing the pressure of each node by combining the actual situation of each node of the water supply network to be managed so as to judge whether each node of the water supply network to be managed can bear high pressure for a long time; optimizing the subareas with unreasonable pressure distribution in the water supply network to be managed according to the judging result;
the leakage judging module is further used for generating a flow difference diagram of each pipe section based on a plurality of flow measurement values and flow simulation values corresponding to the flow measurement values, wherein the flow measurement values comprise current flow measurement values and a plurality of historical flow measurement values, and the flow simulation values comprise current flow simulation values corresponding to the current flow measurement values and historical flow simulation values corresponding to the historical flow measurement values; comparing and analyzing the flow difference value diagram of the pipe sections to determine specific water leakage pipe sections and the leakage duration and the leakage quantity of each water leakage pipe section; based on the determined leakage duration and leakage quantity of the water leakage pipe section, determining the estimated repair duration for performing leakage repair on the water leakage pipe; and according to the estimated repair time length and the estimated repair cost, arranging the modification sequence of each leakage pipe section, and determining the modification time of each leakage pipe section.
7. A storage medium, wherein a water supply network real-time leakage detection program is stored on the storage medium, and the water supply network real-time leakage detection program, when executed by a processor, implements the steps of the water supply network real-time leakage detection method according to any one of claims 1 to 4.
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