高扬程输水系统停泵水锤防护分析  

Analysis of Water Hammer Protection in High Lift Water Pump System

作　　者：范小娟 宋培培 夏玉宝 FAN Xiaojuan;SONG Peipei;XIA Yubao(Guizhou Water&Power Survey and Design Institute Co.,Ltd.,Guiyang 550000,China)

机构地区：[1]贵州省水利水电勘测设计研究院有限公司,贵州贵阳550000

出　　处：《人民黄河》2022年第4期136-139,144,共5页Yellow River

基　　金：梯级泵站节能关键技术及运用研究(KT201610)。

摘　　要：为保证高扬程输水系统的可靠性,降低输水系统工程投资,基于特征线法对高扬程输水系统水力过渡过程进行计算分析,判断高扬程输水系统发生水锤的类型,并分析不同关阀方案时输水系统的水锤影响。结果表明:发生间接水锤时,对水泵出口阀门采取两段关闭方案,输水系统中机组的参数、管路最大压力满足规范要求;快关时间对机组最大反转速、阀后最大压力上升值影响相对较小;慢关时间对机组最大反转速、阀后最大压力上升值影响较大。Computational analysis of hydraulic transition process was made based on the method of characteristics of ensuring the reliability of the high lift water pump system and reducing water conveyance systems engineering investment.It determined the type of high lift water pump hammer and analyzed water hammer effects of different rules of closing the valve through the calculated result.The consequence indicates that the unit parameters and the maximum pressure of the line are satisfied specification requirements when the system occurs indirect water hammer.The fast⁃closing time has a relatively smaller effect on the maximum anti⁃speed of the unit and the maximum pressure after the valve.Slow shutdown time has a greater effect on the maximum anti⁃speed of the unit and the appreciation of the maximum pressure behind the valve.The research results can provide a reference for water hammer protection for similar projects.

关 键 词：高扬程输水 关闭规律 间接水锤 事故停机 特征线法 水锤防护 

分 类 号：TV93[水利工程—水利水电工程]