基于EPANET的市政管网二次供水设备数值模拟研究  

Numerical Simulation of the Secondary Water Supply Equipment in Water Distribution System Based on EPANET

作　　者：刘新月 邓帮武 陈晔斌 朱波[3] 郭帅 LIU Xin-yue;DENG Bang-wuz;CHEN Ye-bin;ZHU Bo;GUO Shuai(School of Civil and Hydraulic Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Shunyu Water Co.,Ltd.,Hefei 231100,China;Hefei Water Group,Hefei 230011,China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]安徽舜禹水务股份有限公司,安徽合肥231100 [3]合肥供水集团有限公司,安徽合肥230011

出　　处：《水电能源科学》2021年第7期117-120,139,共5页Water Resources and Power

基　　金：安徽省自然科学基金项目(1908085QE211)。

摘　　要：为分析两种二次供水设备—管网叠压(无负压)设备与节能错峰供水设备对市政管网流量和压力的影响,利用有压管网数值模拟软件EPANET构建城市区域管网数值模型,在管网模型8个节点处分别添加概化后的两种二次供水设备进行运算分析,发现无负压设备仅会增加使用该设备处的8个节点的压力,对管网中其他位置的流量和压力影响较小。而节能错峰供水设备对市政管网影响较大,使用8个节能错峰供水设备后,在用水高峰来临前后,各压力区间节点数最大差异值由10个减小至2个,且流量变化曲线更加平稳,24h最大流量差由422.76L/s变为375.25L/s;此外,还发现该型设备数量对管网压力波动影响显著,当设备数量减少为6个时,管网中流量和压力也相对稳定,而当设备数量继续减少至4个及2个时,低压区节点数持续增加,且流量变化曲线波动增大,表明此二次供水设备数量与管网中流量和压力有较大相关性。研究成果为供水管网中二次供水设备的模型化计算与分析提供了参考。In order to study the impacts of two types of widely used secondary water supply equipment(Non-negative pressure device and Energy-saving device)on the water pressure fluctuation,a numerical water distribution system(WDS)model was built using EPANET.Firstly,two kinds of devices were added to eight nodes in the network model for calculation and analysis.Numerical results show that non-negative pressure devices only increase the pressure of the eight nodes where the equipment used,and have little impact on the flow and pressure of other nodes in the network.However,The energy-saving devices have greater impact on the WDS.It was found that the maximum difference of the number of nodes in each pressure range decrease from 10 to 2 before and after the water peak hour,the 24-hour flow rate curve become more stable,and the maximum flow difference changes from 422.76 L/s to 375.25 L/s.In addition,the number of energy-saving device used has an impact on the pressure wave of the WDS.When the devices in the system are reduced to 6,the flow and pressure in the network still keep relatively stable.However,when the number reduces to 4 and 2,the number of low-pressure nodes increases continuously,and the flow rate curve shows more fluctuation.The research results provide a reference for modeling and analysis of the secondary water supply equipment in water distribution system.

关 键 词：EPANET软件 二次供水 管网叠压(无负压)设备 节能错峰供水设备 

分 类 号：TU991.36[建筑科学—市政工程]