Influence analysis of pressure-superposed water supply system on municipal pipe network
The pressure-superposed water supply makes full use of the residual pressure of the pipe network to carry out frequency conversion and constant pressure water supply,which has the advantages of energy saving and stable water supply quality.However,the pressure-superposed water supply system is directly connected to the municipal pipeline network,resulting in the fluctu-ations at the access point,upstream and downstream of the pipeline network when stared up.This will influence the changes in the amount of water conveyed by the municipal pipeline network and the pressure changes.In this paper,the municipal pipe network of JT urban area in Jiangsu Prov-ince was set as the research object.To analyze the influence of pressure-superposed water supply system on the municipal pipe network,EPANET and HAMMER software were used to perform extended period simulation and transient simulation,respectively.Furthermore,two parameters were set as evaluation indicators:the minimum municipal water supply pressure requirement and the system access point operation pressure drop requirement.The results show that the influence of the pressure-superposed water supply system on the municipal pipe network is related to the oc-cupancy rate of the neighborhood,water use time,the number of pressure-superposed water sup-ply system.The pressure at the access point in the multi-pressure-superposed water supply system drop with the sparseness of distribution and the decrease of pressure-superposed water supply sys-tems near the neighborhood.Combined with the research in this paper,when the influence exceeds the safety range in practical application,it is recommended that the influence could be mitigated by optimizing the control methods and water supply to ensure the safety of the water supply.
Pressure-superposed water supply systemMunicipal pipe networkExtended peri-od simulationTransient simulation
万方数据
维普
