人民黄河2026，Vol.48Issue(1)：128-133,6.DOI:10.3969/j.issn.1000-1379.2026.01.020
长距离有压输水工程停泵水锤模拟及防护研究
Simulation and Protection Study of Pump Trip Water Hammer in Long-Distance Pressurized Water Conveyance Projects
摘要
Abstract
To study the water hammer during pump trip in long-distance pressurized water transmission projects,the characteristic line meth-od was used to numerically simulate actual pressurized water transmission projects.This study analyzed and studied the impact of the absence of water hammer protection measures,the installation of check valve protection measures,and control strategies on water hammer.Based on this,a water hammer protection scheme combining air valve and check valve was proposed,and sensitivity analysis was conducted on the pa-rameters of the air valve.The results indicate that when without water hammer protection measures,pump trip in accidents will result in con-tinuous reversal of the pump and severe negative pressure along the water pipeline;When using two-stage closing check valve protection measures,optimizing the valve closure strategy can improve the maximum pressure of the pipeline and the reversal of the water pump,but the improvement effect on the negative pressure inside the pipeline is not significant;The joint installation of fast forward and slow exhaust air valves can effectively improve the serious negative pressure problem.The diameter of the air valve has a significant impact on the water hammer protection effect,and there is an optimal solution.关键词
水锤防护措施/缓闭止回阀/空气阀/输水系统Key words
water hammer protection measure/slow closing check valve/air valve/water conveyance system分类
建筑与水利引用本文复制引用
GUO Chu,ZHANG Tao,WANG Danna,CHEN Zhao,ZHENG Yuan..长距离有压输水工程停泵水锤模拟及防护研究[J].人民黄河,2026,48(1):128-133,6.基金项目
国家重点研发计划项目(2019YFE0105200) （2019YFE0105200）
