浙江大学学报(工学版)  2023, Vol. 57 Issue (1): 92-99    DOI: 10.3785/j.issn.1008-973X.2023.01.010
 土木工程

1. 哈尔滨工业大学 环境学院，黑龙江 哈尔滨 150090
2. 广东粤港供水有限公司，广东 深圳 518000
3. 广东粤海水务投资有限公司，广东 深圳 518000
Leakage model of water supply plastic pipes and application of discretionary pressure management
Jin-liang GAO1(),Kun-yi LI1,Yuan-zhe LI1,Hang-wei ZHENG2,Guo-sheng SUN3,Cheng-zhi ZHENG3
1. School of Environment, Harbin Institute of Technology, Harbin 150090, China
2. Guangdong Yue Gang Water Supply Limited Company, Shenzhen 518000, China
3. Guangdong Yue Hai Water Investment Limited Company, Shenzhen 518000, China
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Abstract:

A leakage model of water supply plastic pipes was constructed based on the mechanism of leak area variation with pressure delay in the viscoelastic theory of plastic material and the orifice outflow model in order to accurately simulate the physical leakage flow of plastic pipes in urban water supply network. The leakage model of water supply plastic pipes is related to the pipe material, pipe inside pressure, leakage area and time. A discretionary pressure management method was proposed by imitating the discretion in the field of economics in order to select a more appropriate pressure regulation strategy and achieve more refined pressure management. The particle swarm optimization algorithm was written by MATLAB, and the pressure-driven hydraulic analysis function of EPANET 2.2 was called in order to solve the leakage model of water supply plastic pipes. Then the optimal setting value of pressure-reducing valve outlet pressure was obtained at each moment, and the discretionary pressure management strategy was developed. Pressure management experiments were conducted in a community located in the southern coastal area by using the traditional pressure management scheme and the discretionary pressure management scheme, respectively. Results showed that the leakage rate of this community was reduced by 56.0% after using the discretionary pressure management scheme, which is better than the traditional pressure management scheme. The reasonableness and feasibility of developing a discretionary pressure management strategy based on the leakage model of water supply plastic pipes was verified.

Key words: urban lifeline    urban water supply network    plastic pipe    pressure management    leakage model    viscoelastic theory    discretion

 CLC: TU 991

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#### 引用本文:

Jin-liang GAO,Kun-yi LI,Yuan-zhe LI,Hang-wei ZHENG,Guo-sheng SUN,Cheng-zhi ZHENG. Leakage model of water supply plastic pipes and application of discretionary pressure management. Journal of ZheJiang University (Engineering Science), 2023, 57(1): 92-99.

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 图 1  供水塑料管道漏失模型求解的流程 图 2  A小区供水管网的拓扑结构 图 3  63号节点压力校核折线图 表 1  传统压力管理方案 表 2  相机压力管理方案 图 4  2:00—4:20时段的qV-t与p-t折线图 图 5  3种情况下的小区用水量比较 表 3  2种压力管理方案的效能评估
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