空气罐参数对多驼峰输水系统水锤防护的影响研究  

The Influence of Air Vessel Parameters on Water Hammer Protection in Multi-hump Water Distribution Systems

作　　者：杨春霞[1] 李倩 于洋[2] 郑源[1] 苏圣致 饶天华 YANG Chun-xia;LI Qian;YU Yang;ZHENG Yuan;SU Sheng-zhi;RAO Tian-hua(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,Jiangsu Province,China;China Water Northeastern Investigation,Design and Research Co.,Ltd.,Changchun 130021,Jilin Province,China)

机构地区：[1]河海大学能源与电气学院,江苏南京211100 [2]中水东北勘测设计研究有限责任公司,吉林长春130399

出　　处：《中国农村水利水电》2023年第5期166-171,共6页China Rural Water and Hydropower

基　　金：国家重点研发计划政府间国际科技创新合作重点专项(2019YFE0105200);中央高校基本科研业务费项目(B210202060)。

摘　　要：空气罐是长距离输水工程中常见的水锤防护措施,为探究影响其效果的多种因素,以特征线法为基础,结合某实际工程对输水管道进行水力过渡过程分析,建立9组不同的参数组合模型研究罐体的体积、罐内气液比和罐体高度直径比对水锤防护效果的影响,结果表明罐的水锤防护能力随体积和气液比的增大、高度直径比的减小而增强,从经济效益和安全角度出发得到罐的最优参数:体积50.49 m3,高度直径比0.5,气液比1.2。此外,通过12组不同的阀门关闭规律方案对比,发现合理设置末端阀门关闭时间不仅能够降低单向塔的尺寸,还能进一步改善空气罐防护受限处的水锤。Air vessel is a common water hammer protection measure in long-distance water transmission projects.In order to explore the ef⁃fect of a variety of factors,based on the characteristic line method,combined with an actual project on the water pipeline for hydraulic transi⁃tion process analysis,nine different combinations of parameters model is established to study the volume of the vessel,the vessel air-liquid ratio and vessel height diameter ratio on the effect of water hammer protection.The results show that the water hammer protection ability of the vessel increases with the increase in volume and gas-liquid ratio,and the decrease in height-diameter ratio,and the optimal parameters of the vessel are obtained from the perspective of economic efficiency and safety:volume 50.49 m³,height-diameter ratio 0.5,and gas-liq⁃uid ratio 1.2.In addition,through the comparison of twelve different groups of valve closing law schemes,it is found that the reasonable set⁃ting of the end valve closing time can not only reduce the size of the one-way tower,but also further improve the air vessel protection at the restricted water hammer.

关 键 词：空气罐 长距离 水锤 联合防护 阀门关闭规律 

分 类 号：S277.7[农业科学—农业水土工程] TV674[农业科学—农业工程]