根据《汽水管道设计技术规定》DLGJ23-81一水管道上的节流孔板序号项目符号单位公式数值1通过孔板的质量流量Gkg/h250002孔板前介质压力P1MPa5.53孔板后介质压力P2MPa0.24孔板前后压差ΔPkg/cm2(P1-P2)*9.8151.995介质温度t℃1506介质密度ρkg/m39807孔板孔径dkmm(G/0.75*(ρ(p1-p2))1/2)1/212.15二焊接式节流孔板厚度1孔板外圆直径Dk302孔板前后压差ΔPkg/cm2(P1-P2)*9.8151.993修正系数ηk0.854钢材基本许用应力[σ]kgf/cm213.675孔板厚度Skmm0.6*Dk*(ΔP/(100*[σ]*ηk)1/23.81二法兰式节流孔板厚度1孔板外圆直径Dk872孔板前后压差ΔPkg/cm2(P1-P2)*9.8151.993钢材基本许用应力[σ]kgf/cm213.674孔板厚度Skmm0.45*Dk*(ΔP/(100*[σ]*ηk)1/27.64P119P119P119数值数值数值10000300030004.20.54.510.1202.540.024.9119.721502515098010009808.217.565.3619261940.024.9119.720.850.850.8513.6713.6713.672.121.011.4950505040.024.9119.7213.6713.6713.673.851.352.70
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