基于压力优化的供水管网分区多入口减压技术  

Divisional Multi-inlet Decompression Technology of Water Supply Network Based on Pressure Optimization

作　　者：陈紫怡 许仕荣[1] 盛炟 CHEN Zi-yi;XU Shi-rong;SHENG Da(School of Civil Engineering,Hunan University,Changsha 410000,China)

机构地区：[1]湖南大学土木工程学院,中国长沙410000

出　　处：《湖南师范大学自然科学学报》2022年第4期152-158,共7页Journal of Natural Science of Hunan Normal University

基　　金：国家重点研发计划项目(2016YFC0400604)。

摘　　要：城市供水管网系统必须要满足用户的水压要求,但是在确保压力满足用户需求的同时,会造成部分地区压力过高,而管网中漏损量随压力的升高而增大。采用压力管理可以最大程度的降低管网的富余压力,从而降低管网漏损率。传统的分区减压方式是在边界封闭的区域采用单入口减压,其弊端是供水安全性较低。针对这一弊端,综合节点自由水压和管网拓扑结构信息,采用基于广度优先搜索邻居的聚类算法对城市供水管网进行聚类分析,实现压力分区;提出并建立多入口减压压力优化模型,并利用粒子群算法寻优得到各入口减压阀阀后压力。案例分析表明多入口减压压力优化模型不仅提高了供水管网的安全性,而且使得管网压力更趋于均匀,能更大程度地降低管网漏失水量。The urban water supply pipe network system must meet the water pressure requirements of users, while ensuring that the pressure meets the needs of users, it will cause excessive pressure in some areas, and the leakage in the pipe network increases with the increase of pressure. Pressure managementcan reduce the excess pressure of the pipe network to the greatest extent so as to reduce the leakage rate of the pipe network. The traditional zoning decompression method usually adopts single inlet decompression method in the closed boundary area, and its disadvantage is that the water supply safety is low. In order to solve this problem, a clustering algorithm based on breadth-first neighbor search is used to cluster the urban water supply network by integrating the free water pressure of nodes and the topological structure information of the network, so as to realize the pressure zoning;an optimization model of multi inlet pressure relief is proposed and established, and the pressure behind the relief valve is obtained by particle swarm optimization. Based on the case analysis, it can be shown that the multi-inlet decompression pressure optimization model not only improves the safety of the water supply network, but also makes the pipe network pressure tend to be uniform, and can greatly reduce the leakage of the pipe network.

关 键 词：压力分区 广度优先搜索邻居 多入口减压方式 供水安全性 压力均衡性 

分 类 号：TU991.33[建筑科学—市政工程]