某长距离四期配水工程水力学设计

Hysim City Software for Water Engineering Simulation Water Hammer Protection in Long-Distance Diversion Project

【目的】浙江某配水工程四期接入三期系统,四期支线流量需求变幅大,以减小四期工程的建设对三期工程影响为目的。【方法】针对四期工程的布置特点,首先开展"池后加压"方案及"管内加压"2个方案水力学设计;接着采用对比的方法,系统开展2个方案的水力学比较;最后,对优选的方案进行了水锤防护分析。【结果】"池后加压"方案更优,泵后阀及管道出口阀采用分段关闭和管线上下游布置调压室联合进行的水锤防护。【结论】该研究思路及研究成果可为类似工程的设计提供参考。

【Objective】The fourth phase of a water distribution project in Zhejiang Province is connected to the third phase system,it is needed to achieve the objective of reducing the impact of the construction of the fourth phase project on the third phase project.【Method】Firstly,the hydraulic design of"pressurization after pool"and"pressurization in pipe"were carried out;Secondly,the hydraulic comparison of the two schemes was carried out systematically by using the method of comparison,and finally,the water hammer protection analysis was carried out for the optimized scheme.【Result】The optimization result of"pressurization after pool"scheme was obtained;And the water hammer protection was that the valve behind the pump and the outlet valve of the pipeline are closed by sections and the surge chamber was arranged upstream and downstream of the pipeline.【Conclusion】The research ideas and results provide reference for the design of similar projects.