Water hammer suppression for long distance water supply systems by combining the air vessel and valve

Abstract

Research Article| May 12 2017 Water hammer suppression for long distance water supply systems by combining the air vessel and valve Di Miao; Di Miao 1College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China Search for other works by this author on: This Site PubMed Google Scholar Jian Zhang; Jian Zhang 1College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China Search for other works by this author on: This Site PubMed Google Scholar Sheng Chen; Sheng Chen 1College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China Search for other works by this author on: This Site PubMed Google Scholar Xiao-dong Yu Xiao-dong Yu 1College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China E-mail: yuxiaodong_851@hhu.edu.cn Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2017) 66 (5): 319–326. https://doi.org/10.2166/aqua.2017.131 Article history Received: December 02 2016 Accepted: March 30 2017 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Di Miao, Jian Zhang, Sheng Chen, Xiao-dong Yu; Water hammer suppression for long distance water supply systems by combining the air vessel and valve. Journal of Water Supply: Research and Technology-Aqua 1 August 2017; 66 (5): 319–326. doi: https://doi.org/10.2166/aqua.2017.131 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex In long distance water supply projects, the air vessel is an effective and reliable protection measure to control water hammer. Although it can effectively eliminate water hammer during the process of hydraulic transient, the volume of the traditional air vessel is large due to the long distance pipeline, resulting in high investment. In this paper, based on the analysis of the transient in long distance water supply pipelines, a protection method, combining the air vessel with the downstream valve, is proposed to reduce the volume of the air vessel, keeping the system pressure within the limit. Furthermore, an innovative arrangement of the air vessel is presented to overcome the risk of the combined protection method. Besides the upstream air vessel, a downstream air vessel is additionally installed to mitigate positive water hammer due to rapid closure of the downstream valve. To verify the effect of the new method, the numerical model was established according to the parameters of a practical water supply project, and hydraulic transient due to pump trip was simulated. Compared with the traditional method, the combined protection method provides effective water hammer protection and greatly reduces the volume of the air vessel. air vessel, pump trip, water hammer protection, water supply project © IWA Publishing 2017 You do not currently have access to this content.