涡街流量计选型手册.pdf

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1、10VME10VTE10VME10VTE10VME10VTD10VM/10VT2000fvdf=Stv/d1v=fd/St2StdStvvv=v/(1-1.25d/D)f00vNV0KK=N/V310VM/10VT10VM10VT4-20mA210VM/10VT1.2.3.10-10VppDN15-DN600DC12VDC24VFD910FC911PTFC2000PTRS48510VM/10VT3(1)10VME10VTE(2)(2)10VT4-20mADN15-DN600DC24V124-20mAFC2000PTRS485(1)10VM(2)0410VM/10VT10VM1810VM10V

2、M/10VT5[1]10VM(10VT)[2]ER1)2)/3)3ABB[3]AB3[4]0DINANSI12DINDIN3ANSIANSI1)2)DIN/ANSIDIN/ANSIGBGBDIN/ANSIDIN/ANSIDIN/ANSI[5]1233003004300[6]A1Cr18Ni9TiB(Q235B)316316LC610VM/10VT1Cr18Ni9Ti[7]X[8]CPN25DN150APN16BPN20DN200DPN404EPN10MPa8[9]11Cr18Ni9Ti9316316LC1Cr18Ni9Ti[10]19PTFE[11]AB,ExibIICT1-T4G,Exdl

3、lCT1-40[12]12()[13]ADC12VBDC24V10VM/10VT710VT1810VT810VM/10VT[1]10VT(10VM)[2]ER12/310[3]A4-20mADB3ABB()[4][12]10VM[13]DC14VDC28VDC16VDC20V[14]HARTHHART1(mm)DN15202532405065801001251502002503003504004505006002GBDINDINANSIANSIGBDINDINANSIANSI3(MPa)2.02.54.05.010.02.02.54.05.04()-4080-40150-40300-4035

4、010VM/10VT95()0.51.01.061Cr18Ni9Ti316316L78m/s0.37360370910VME5V1V1:1()10VTE4-20mA10VTD4-20mA10VTB1010VMEDC12VDC24V10VTEDC24V10VTDDC24V10VTB6V11ExiaIICT1-4ExdIICT1-T412IP65IP6813-40~+555~90(%)86~106KPa1010VM/10VT1()(t=20P=0.1Mpar=1.205Kg/m3V=15x10-6m2/s)0001(4)QrQ=Qxr/r(4)r00Q:rQ:()(())0r:()r=1.205

5、kg/m300r:10VM/10VT112(5)QvQ=Qxn/n5v00QvQ0n15mm2/s0n3QQvrQQQ-QnrrmaxQ-QvmaxQQQ-QnrrmaxQmaxr=1.668kg/m3n=13(10-6m2/s)DN1001DN100100m3/h4Q=Qx(r/r)r00=100x(1.205/1.668)=100x0.85=85.5DN10085.5m3/h2Q=Qxn/nv0=100x13/15=86.6DN10086.6m3/h3QQvrQ>QQ=85.5m3/hnrrQ=86.6m3/hnDN10086.6m3/h86.61000m3/h1210VM/10VTP=

6、0.7MPat=30Q=10-60m3/minN11-1Q=1060m3/min=6003600m3/hN1-2Q=Q(P/P)(T/T)(6)NNNP0.101325MPaNP=(+)NT273.15KNt()NQ=Qx0.101325/Px(273.15+t)/273.15N=600x0.101325/(0.7+0.1)x(273.15+30)/273.15=600x0.1267x1.1098=84(m3/h)84(m3/h)Q=84x(60/10)=504(m3/h)284504m3/h()DN8070700m3/hDN80DN80DN80Q=Qxr/rr00=Qx[0.101325x

7、(273.15+t)/(P+0.101325)/273.15]0=70x(0.101325x303.15/0.801325/273.15)=70x0.3746=26.22(m3/h)26.22m3/h84m3/hDN8026.22700m3/h0.7MPa1/8470/8=8.6m3/hQ(26.22m3/h)r10VM/10VT130.8MPa30700m3/hDN50DN80700m3/hDN8070m3