燃气系统中调节阀相对开度变化时流量的计算  

Calculation of Flow during Variation of Relative Aperture of Regulating Valve in Gas System

作　　者：王军玲[1] 李兴泉[1] 田贯三[1] 赵自军[2] 

机构地区：[1]山东建筑大学热能工程学院,山东济南250101 [2]中国市政工程华北设计研究总院,天津300074

出　　处：《煤气与热力》2010年第4期34-38,共5页Gas & Heat

基　　金："十一五"国家科技支撑计划课题(2006BAJ03B02)

摘　　要：分析了燃气系统中影响调节阀流量的因素,调节阀流量与流通能力系数、相对开度等因素有关。通过对调节阀理想流量特性的分析,推导出流通能力系数与相对开度的数学关系式,再利用流量与流通能力系数的关系,得到流量与相对开度的数学关系式。用此方法计算的流量与实际流量的相对误差不超过8%,表明此流量计算方法具有工程实用价值。The factors influencing the flow of regulating valve are analyzed, and the flow of regulating valve is related to the flow capacity coefficient, the relative aperture and so on. The mathematical relational expression between the flow capacity coefficient and the relative aperture is derived by analyzing the ideal flow characteristics of regulating valve, and the mathematical relational expression between the flow and the relative aperture is obtained by the relationship between the flow and the flow capacity coefficient. The relative error between the flow calculated by this method and the actual flow is less than 8%, showing that this calculation method of flow has practical engineering value.

关 键 词：调节阀 流量特性 流通能力系数 相对开度 

分 类 号：TU996[建筑科学—供热、供燃气、通风及空调工程]