| 长距离供水工程的关阀水锤与线路充填 |
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| 引用本文： | 张健,俞晓东,朱永忠.长距离供水工程的关阀水锤与线路充填[J].水力发电学报,2010,29(2). |
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| 作者姓名： | 张健 俞晓东 朱永忠 |
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| 作者单位： | 河海大学水利水电工程学院,南京,210098 |
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| 基金项目： | 水资源与水电工程国家重点实验室开放基金(2006B030); 水利部科技创新资助项目(SCX2003-08) |
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| 摘 要： | 长距离供水工程是解决水资源时空分布不均的有效方式,工程运行中发生的水锤将严重威胁输水系统的安全.本文对长距离供水工程中关阀水锤特性进行研究,分析了长距离供水工程中的线路充填现象,推导了考虑摩阻的输水系统直接水锤公式,并对间接水锤公式进行了修正,同时探讨了其适用范围.结果表明:对于长距离供水工程,由于关阀过程中管道出现了线路充填,发生的直接水锤大小与关阀时间密切相关,关阀时间越短,直接水锤压力越大;当关阀时间大于一个相长时,长距离供水系统所产生的间接水锤压力数值上也可能超过直接水锤,修正后的间接水锤公式不仅可用于供水系统水锤分析,同时为折线关阀规律的设计提供了理论依据,计算结论为长距离供水工程的管道设计及运行调度提供了参考.
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| 关 键 词： | 水力学 长距离供水工程 线路充填 直接水锤 间接水锤 关闭规律 |
Study on water-hammer and line packing in long-distance water-supply project |
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| ZHANG Jian
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YU Xiaodong
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ZHU Yongzhong.Study on water-hammer and line packing in long-distance water-supply project[J].Journal of Hydroelectric Engineering,2010,29(2). |
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| Authors: | ZHANG Jian YU Xiaodong ZHU Yongzhong |
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| Affiliation: | ZHANG Jian,YU Xiaodong,ZHU Yongzhong (College of Water Conservancy , Hydropower Engineering,Hohai Univ.,Nanjing 210098) |
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| Abstract: | Long-distance water-supply project is an effective way to solve the uneven spatial and temporal distribution of water resource,the safety of water conveyance system is seriously threatened by water-hammer. Based on the long-distance water-supply project,the characteristic of water-hammer and line packing is analyzed,the formula of direct water-hammer deduced,indirect water-hammer also modified,and the application scope of formula discussed with friction considered. The results show that direct water-hammer ... |
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| Keywords: | hydraulics long-distance water-supply project line packing direct water-hammer indirect water-hammer valve closure law |
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