CN-121997818-A - Pipe network leakage analysis method and system based on online hydraulic model

CN121997818ACN 121997818 ACN121997818 ACN 121997818ACN-121997818-A

Abstract

The application relates to a pipe network leakage analysis method and a system based on an online hydraulic model, and relates to the technical field of pipe network leakage analysis, wherein the method comprises the steps of collecting detection flow and detection water flow pressure; the method comprises the steps of comparing the condition of the detected flow with a preset reference flow to calculate a flow deviation value, calculating the difference between the detected water flow pressure and the preset reference pressure to serve as a pressure deviation value, obtaining a detected leakage range through the flow deviation value, the pressure deviation value and a preset hydraulic model, calling a pipe network connection range from the hydraulic model, obtaining a connection mode according to the hydraulic model and the detected leakage range when the detected leakage range falls into the pipe network connection range, combining the flow deviation value, the pressure deviation value and the connection mode to obtain abnormal connection parameters, and uploading the abnormal connection parameters. The application has the effect of improving the pipe network repairing efficiency.

Inventors

CAI YUNPENG
CAI YUNSHAN
YANG QIULIANG

Assignees

宁波东海集团有限公司
宁波东海数字科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260112

Claims (10)

1. A pipe network leakage analysis method based on an online hydraulic model is characterized by comprising the following steps: s10, collecting detection flow and detection water flow pressure; S11, comparing the detected flow with a preset reference flow to calculate a flow deviation value; s12, calculating the difference between the detected water flow pressure and a preset reference pressure as a pressure deviation value; S13, obtaining a detection leakage range through a flow deviation value, a pressure deviation value and a preset hydraulic model; s14, a pipe network connection range is called from the hydraulic model; s15, when the detection leakage range falls into the pipe network connection range, obtaining a connection mode according to the hydraulic model and the detection leakage range; S16, combining the flow deviation value, the pressure deviation value and the connection mode to obtain abnormal connection parameters, and uploading the abnormal connection parameters.
2. The method for analyzing pipe network leakage based on an online hydraulic model according to claim 1, wherein the method for obtaining abnormal connection parameters comprises the following steps: s20, judging whether the connection mode is a preset loose connection type or not; S21, when the connection mode is not of a loose connection type, taking the detection leakage range as an abnormal connection parameter, and uploading the abnormal connection parameter; s22, when the connection mode is loose connection type, collecting detection vibration parameters of a detection leakage range; S23, obtaining abnormal connection parameters by detecting vibration parameters, flow deviation values, pressure deviation values and connection modes.
3. The method for analyzing pipe network leakage based on an online hydraulic model according to claim 2, wherein the method for obtaining abnormal connection parameters further comprises: S30, obtaining a reference vibration parameter according to the hydraulic model and the connection mode; s31, comparing the detected vibration parameter with the reference vibration parameter to calculate a vibration deviation parameter; s32, obtaining a loosening parameter of the connection mode based on the vibration deviation parameter; S33, obtaining detection water leakage from the hydraulic model by combining the flow deviation value and the pressure deviation value; s34, obtaining abnormal connection parameters according to the loosening parameters and the detected water leakage.
4. The pipe network leakage analysis method based on the online hydraulic model according to claim 3, wherein the verification method of the abnormal connection parameters comprises the following steps: S40, obtaining loose water leakage according to the loosening parameters and the hydraulic model; S41, comparing the consistency of the loose water leakage amount and the detected water leakage amount to select a loose parameter as an abnormal connection parameter or calculate the water leakage deviation amount; s42, updating the detection leakage range according to the water leakage deviation and the hydraulic model; s43, taking the detection leakage range and the loosening parameter as abnormal connection parameters.
5. The method for analyzing pipe network leakage based on an online hydraulic model according to claim 4, wherein the method for verifying abnormal connection parameters further comprises: s50, collecting connection materials of a connection mode; S51, when the connecting material is a preset rubber material, obtaining a detection pipeline according to the hydraulic model and the detection leakage range; s52, closing a detection pipeline to collect the detected water quantity; s53, obtaining abnormal connection parameters based on the detected water quantity, the detected water leakage quantity and a preset detection method.
6. The method for analyzing pipe network leakage based on an online hydraulic model according to claim 5, wherein the preset detection method comprises the following steps: S60, heating a detection pipeline by using a preset mark detection temperature, and collecting a temperature detection value and the ambient temperature; s61, stopping heating and updating the temperature detection value when the temperature detection value is consistent with the mark detection temperature; s62, a temperature change value is obtained through a temperature detection value before and after updating; S63, calculating the difference between the mark detection temperature and the ambient temperature to obtain an ambient deviation temperature; s64, combining the detected water quantity, the hydraulic model, the detected water leakage quantity and the environment deviation temperature to obtain reference change heat; s65, obtaining the mark change heat according to the temperature change value and the detected water quantity; S66, obtaining abnormal connection parameters according to the marking change heat and the reference change heat.
7. The on-line hydraulic model-based pipe network leakage analysis method according to claim 6, further comprising: S70, judging whether the mark change heat is consistent with the reference change heat; S71, collecting the using time length of the connection mode when the marking change heat is consistent with the reference change heat; S72, obtaining aging parameters based on the use time length; s73, obtaining a damaged area according to the hydraulic model, the ageing parameter and the water leakage amount, and taking the ageing parameter and the damaged area as abnormal connection parameters.
8. The on-line hydraulic model-based pipe network leakage analysis method according to claim 7, further comprising: s80, when the mark change heat quantity is inconsistent with the reference change heat quantity, obtaining a change temperature value based on the connection material; S81, heating the connection mode of the detection pipeline according to the change temperature value and a preset detection position, and obtaining a reference change water quantity and a damage area according to the change temperature value and the connection mode; s82, updating the detected water quantity to obtain a changed water quantity; s83, comparing the consistent condition of the variable water quantity and the standard variable water quantity to select a detection leakage area and a breakage area as abnormal connection parameters or combining a variable temperature value to obtain a variable range; S84, obtaining the marked variable water quantity according to the variable range; s85, obtaining a damaged area, a connection damaged area and a connection damaged position according to the marked changed water quantity, the changed water quantity and the reference changed water quantity, and taking a detected leakage range, a detected damaged area, a detected connection damaged area and a detected connection damaged position as abnormal connection parameters.
9. The pipe network leakage analysis method based on the online hydraulic model according to claim 1, wherein the method for determining the reference flow comprises the following steps: s90, collecting historical equipment parameters and historical flow; S91, updating the historical flow based on the historical equipment parameters to obtain a change flow; S92, updating historical equipment parameters to obtain changed equipment parameters; s93, obtaining historical mark flow by changing equipment parameters and a hydraulic model; S94, comparing the consistency of the change flow and the historical mark flow and combining the historical flow to obtain the reference flow.
10. A pipe network leakage analysis system based on an online hydraulic model, comprising: The acquisition module is used for acquiring the detection flow and the detection water flow pressure; a memory for storing a program for implementing the pipe network leakage analysis method based on an online hydraulic model according to any one of claims 1 to 9; And the processor is used for loading and executing the programs stored in the memory.

Description

Pipe network leakage analysis method and system based on online hydraulic model Technical Field The invention relates to the technical field of pipe network leakage analysis, in particular to a pipe network leakage analysis method and system based on an online hydraulic model. Background The pipe network leakage analysis is a process for positioning and quantifying the pipeline leakage occurring in the water supply pipe network through monitoring, modeling and intelligent diagnosis technologies. In the process of pipe network leakage analysis, leakage management depends on an online hydraulic model, and the online hydraulic model can position a leakage range to a specific pipe section or node and estimate water quantity by comparing deviation of analog values and measured values of water flow pressure and flow. In the pipe network leakage analysis process, the online hydraulic model only can identify the position and estimated water quantity of the pipe network leakage range, and the reasons of the pipe network leakage cannot be analyzed, so that various tools for repairing the pipe network are required to be prepared, and the pipe network repairing efficiency is reduced. Disclosure of Invention In order to improve the pipe network repairing efficiency, the invention provides a pipe network leakage analysis method and system based on an online hydraulic model. In a first aspect, the invention provides a pipe network leakage analysis method based on an online hydraulic model, which adopts the following technical scheme: A pipe network leakage analysis method based on an online hydraulic model comprises the following steps: s10, collecting detection flow and detection water flow pressure; S11, comparing the detected flow with a preset reference flow to calculate a flow deviation value; s12, calculating the difference between the detected water flow pressure and a preset reference pressure as a pressure deviation value; S13, obtaining a detection leakage range through a flow deviation value, a pressure deviation value and a preset hydraulic model; s14, a pipe network connection range is called from the hydraulic model; s15, when the detection leakage range falls into the pipe network connection range, obtaining a connection mode according to the hydraulic model and the detection leakage range; S16, combining the flow deviation value, the pressure deviation value and the connection mode to obtain abnormal connection parameters, and uploading the abnormal connection parameters. Through adopting above-mentioned technical scheme, through carrying out analysis in order to obtain unusual connection parameter to detecting flow and detecting water flow pressure and water conservancy model to upload with unusual connection parameter, thereby can know the pipe network and appear leaking the reason of loss and prepare various instruments that are used for repairing the pipe network to the reason, improve pipe network prosthetic efficiency. Optionally, the method for obtaining the abnormal connection parameter includes: s20, judging whether the connection mode is a preset loose connection type or not; S21, when the connection mode is not of a loose connection type, taking the detection leakage range as an abnormal connection parameter, and uploading the abnormal connection parameter; s22, when the connection mode is loose connection type, collecting detection vibration parameters of a detection leakage range; S23, obtaining abnormal connection parameters by detecting vibration parameters, flow deviation values, pressure deviation values and connection modes. Optionally, the method for obtaining the abnormal connection parameter further includes: S30, obtaining a reference vibration parameter according to the hydraulic model and the connection mode; s31, comparing the detected vibration parameter with the reference vibration parameter to calculate a vibration deviation parameter; s32, obtaining a loosening parameter of the connection mode based on the vibration deviation parameter; S33, obtaining detection water leakage from the hydraulic model by combining the flow deviation value and the pressure deviation value; s34, obtaining abnormal connection parameters according to the loosening parameters and the detected water leakage. Through adopting above-mentioned technical scheme, obtain the parameter of loosening through detecting vibration parameter and benchmark vibration parameter to through the parameter of loosening and detect the volume of leaking in order to obtain unusual connection parameter, thereby can further know the detail of pipe network leakage, in order to improve the accuracy of unusual connection parameter. Optionally, the method for checking the abnormal connection parameters includes: S40, obtaining loose water leakage according to the loosening parameters and the hydraulic model; S41, comparing the consistency of the loose water leakage amount and the detected water leakage amount to select a loose par