摘要
为探究空气罐对泵站水锤的防护效果,以北方某泵站工程为背景,根据水锤计算基本原理,建立空气罐数学模型,通过数值模拟泵站发生停泵水锤时无阀防护、液控蝶阀、液控蝶阀+空气阀、液控蝶阀+空气阀+空气罐联合防护工况下水锤压力水头变化规律,提出利用液控蝶阀+空气阀+一定体积的空气罐联合防护泵站水锤的新思路。通过进一步模拟空气罐高度直径比、初始气体压力水头对水锤防护效果的影响,得出了综合消除水锤最优方案为高度直径比为3、初始气体压力水头为60 m时,水锤防护效果最优。
In order to explore the protective effect of air tank to pump water hammer,taking a pumping station project in the north as the background and according to the basic principles of water hammer calculation,the mathematical model of the air tank was built.Through the numerical simulation of pump station stops pumping water hammer occurs without valve protection,hydraulic control butterfly valve,hydraulic control butterfly valve and air valve,hydraulic control butterfly valve,air valve and air tank joint protection condition of water hammer pressure head change rule,it proposed the use of hydraulic control butterfly valve,air valve and a certain volume of air tank joint pumping water hammer protection of new ideas.By further simulating the influence of the height diameter ratio of air tank and the initial gas pressure head on the protection effect of water hammer,it is concluded that when the height diameter ratio is 3 and the initial gas pressure head is 60 m and the protection effect of water hammer is the best.
作者
李琨
吴建华
孙一鸣
王丽
韩亚男
LI Kun;WU Jianhua;SUN Yiming;WANG Li;HAN Yanan(School of Water Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《人民黄河》
CAS
北大核心
2021年第3期127-130,共4页
Yellow River
基金
山西省国际科技合作项目(201603D421011)
山西省重点研发计划项目(201803D31207-1)
山西省水利科学技术与科研项目(TZ2019027,XS2019006)
山西省研究生教育创新项目(2019SY171)。
关键词
水锤
负压
空气罐
高度直径比
初始气体压力水头
泵站
water hammer
negative pressure
air tank
height diameter ratio
initial gas pressure head
pumping station
