Research on the water hammer protection of the air vessel caused by underground pipe burst in long distance water supply system
The conventional air vessel installation is usually installed behind the check valve at the upstream end of the pipeline to effectively control the water hammer pressure due to pump trip.However,the water hammer pressure caused by underground pipe burst has been neglected.The water hammer protection of air vessel due to pipe burst in long distance water supply system was discussed in this paper.According to analysis of the process of the pipe burst,the mathematical model of underground pipe burst and air vessel were established.A new air vessel installation that was installed in the middle of the pipeline was proposed.The new air vessel installation was simulated by method of characteristics.Then it was compared with the conventional air vessel when the pump trip and the pipe burst occur respectively.The results show that both the conventional air vessel and the new air vessel can effectively protect the water hammer duo to the pump trip.Moreover,when pipe burst occurs,the conventional air vessel cannot achieve the safe operation of the long distance water supply system.However,under the same air vessel type parameters,the new air vessel installation can effectively protect the water hammer pressure.
Xingtao Wang Jian Zhang Xiaodong Yu Lin Shi
College of Water Conservancy and Hydropower Engineering,Hohai University,210098 Nanjing,Jiangsu,China
国际会议
2018 International Symposium on Water System Operations(ISWRSO 2018)(2018年水资源系统及调度国际研讨会)
北京
英文
1-7
2018-10-12（万方平台首次上网日期，不代表论文的发表时间）