呼吸阀计算书

NB35-2原油供油改造项目DE08026-CAL-CEP-IN-0001REV.0项目号:MADEBY:项目名:CHECKEDBY:位号:REVIEWEDBY:标准API2000DATEP1正压力PLUS.PRESSURE1.213BarAP1'负压力MINUSPRESSURE0.963BarAP2背压力BACKPRESSURE1.013BarA△Po允许超压百分数ALLOWABLEOVERPRESSUREM分子量MOLECULARWEIGHT16.83T1排放温度RELIEVINGTEMPERATURE℃k绝对压力指数RATIOOFTHESPECIFICHEATS1.4Q正需要排量REQUIREDCAPACITY150.00Nm3/hQ负需要排量REQUIREDCAPACITY80.00Nm3/hμ粘度cpKv粘度修正系数VISCOSITYCORRECTIONFACTORT入口绝对温度ABSOLUTETEMPERATURE373KZ压缩系数COMPRESSIBILITYFACTOR12.127cm22.315cm219.620cm21383.80Nm3/h678.12Nm3/hNote:所以计算排量满足需要排量THEREFORECAPACITYISENOUGHQ负/(12503P2(k/MTZ(k-1)((P1'/P2)2/k-(P1'/P2)(1+1/k))1/2)=选择面积SELECTIONORIFICEAREA排量计算CAPACITYQ正/(12503P1(k/MTZ(k-1)((P2/P1)2/k-(P2/P1)(1+1/k))1/2)=呼吸阀的选择SELECTIONFORPRESSURE/VACUUMSAFETYVALVEWdr额定排量RATEDRELIEVINGCAPACITY12503P1A(k/MTZ(k-1)((P2/P1)2/k-(P2/P1)(1+1/k))1/2=12503P2A(k/MTZ(k-1)((P1'/P2)2/k-(P1'/P2)(1+1/k))1/2=Ac所需流道面积REQUIREDORIFICEAREA呼吸阀计算书CALCULATIONFORPRESSURE/VACUUMSAFETYVALVE计算参数口径计算SIZING进口尺寸X流道尺寸X出口尺寸INLETXORIFICEXOUTLET进口连接X出口连接INLETXOUTLET3X50X3150LBRFX150LBRFPAGE2OF2