供水工程空气阀的设置分析  

Analysis on layout of air valves in water supply projects

作　　者：胡建永[1] 方杰[2] 

机构地区：[1]浙江水利水电学院水利工程系,浙江杭州310018 [2]中国水电顾问集团华东勘测设计研究院,浙江杭州310014

出　　处：《人民长江》2013年第19期9-11,31,共4页Yangtze River

基　　金：中国博士后科学基金资助项目(20100481081);江苏省博士后科研资助计划项目(1101020C);国家自然科学基金项目(51079050)

摘　　要：管道供水工程的运行效果与空气阀的设置位置、间距和空气阀的进排气孔口尺寸关系密切。通过对管线中气体动态特性和管线输送气体能力的分析,提出了空气阀设置间距的建议取值原则。以管道充放水为控制工况,按照等体积原则推导了空气阀进排气孔口尺寸的理论计算方法。实例分析表明,经验取值与理论分析得到的空气阀设置方案存在明显的差异,理论分析得到的空气阀布置间距和进排气孔口直径比经验法更小。研究表明,以经验取值原则为基础,结合理论分析方法,可以为空气阀的设置和优化提供更为明确的分析依据。The operating effect of a water supply project is closely related with the layout position, interval, as well as orifice diameters of air inlets and outlets of air valves. The paper proposes the determination principle of interval value based on analysis of air dynamic characteristics and capability of air conveying in pipelines. Theoretical calculation method for orifice diameters of air valves is deduced according to the same volume principle under the case of water filling and emptying in pipelines. The result indicates that the layout solution of air valves has an obvious difference between experiential value and theoretical analysis. The interval and orifice diameters by theoretical analysis are quite smaller than those by experiences. Furthermore, the more specific reference for layout and optimization of air valves can be obtained based on experiential value and theoretical analysis simultaneously.

关 键 词：空气阀 口径 充水 放空 供水工程 

分 类 号：TV672.2[水利工程—水利水电工程]