Study on Leakage Warning of Urban Water Supply Network Based on Pressure Correlation
In recent years,the frequent occurrence of extreme weather,coupled with the serious water shortage prob-lem in most cities of China for a long time,it is necessary to find the leakage accident of urban water supply network in time in order to save limited freshwater resources.Firstly,this paper discussed the characteristics of pressure data under normal operating conditions through the historical pressure data of a city's water supply network.Secondly,the factors that affect the pressure change at the leakage point when the leakage accident occurs in the water supply network were discussed,and the fluid simulation software FLUENT was used for simulation verification.Finally,the pressure fluctua-tion threshold of the water supply network was established on the basis of the pressure variation rules of various working conditions.When the monitored pressure value exceeded the pressure fluctuation threshold,the leakage accidents of water supply network had been early-warning by comprehensively considering the pressure fluctuation degree of the pressure monitoring point at a single time and the pressure change trend within a time period.Taking a city's water supply network as an example,the effectiveness and feasibility of the leakage early warning method was verified.
NETL
NSTL
万方数据
维普
