空气阀口径对有压管道停泵水锤的防护研究  

Influence of Air Valve Diameter on Protection of Water Hammer Caused by Pump-stop in Pressurized Pipelines

作　　者：徐放[1] 李志鹏[1] 王荣辉 廖志芳 XU Fang;LI Zhi-peng;WANG Rong-hui;LIAO Zhi-fang(College of Energy and Power Engineering,Changsha University of Science and Technology,Changsha 410004,China;BNSV Valve Group Limited Company,Tianjin 301802,China)

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410004 [2]博纳斯威阀门集团有限公司,天津301802

出　　处：《中国给水排水》2020年第5期52-55,共4页China Water & Wastewater

基　　金：湖南省研究生科研创新项目(CX2017B482)。

摘　　要：针对目前长距离压力输水工程中空气阀口径选取的盲目性,结合西南某长距离、多起伏输水管线进行停泵水锤数值模拟,采用Hammer水锤软件,通过特征线法对有压管线中的停泵水锤进行数值计算,研究不同空气阀口径对停泵水锤的防护影响。结果表明:此输水工程中,对应最佳停泵水锤防护效果,空气阀口径有一个最优值,且该最优值与管路直径和输水流速有关。Aiming at the blindness of selecting air valve diameter in long distance pressurized water conveyance projects,numerical simulation of pump-stop water hammer was carried out in a long distance and undulating water pipeline in southwest China.Pump-stop water hammer in pressurized pipelines was numerically calculated by Hammer software and characteristic line method,and the effects of different diameters of air valves on the protection of pump-stop water hammer were explored.In the conveyance engineering,the air valve diameter had an optimal value corresponding to the best protective effect of pump-stop water hammer,and the optimal value was related to the pipe diameter and water conveyance flow.

关 键 词：停泵水锤 空气阀口径 Hammer软件 

分 类 号：TV672.2[水利工程—水利水电工程]