Hlau Tube Rotameter Siv nyob rau hauv Karachi, Pakistan

Thaum Lub Rau Hli, 2018, Ib qho ntawm peb cov neeg siv khoom hauv Pakistan, Karachi, lawv xav tau lub raj hlau rotameter rau ntsuas cov pa.

Lawv txoj haujlwm ua haujlwm raws li hauv qab no:
Cov kav dej: φ70 * 5, Max. Flow 110m3/h, Mini.flow 10m3/h, ua hauj lwm siab 1.3MPa, ua hauj lwm kub 30 ℃, lub zos barometric siab 0.1MPa.

Peb xam raws li hauv qab no:
① Oxygen ceev:
Raws li tus qauv: ρ20 = 1.331kg / m3
Raws li kev ua haujlwm:ρ1 = ρ20 * (P1T20 / PNT1Z) = 1.331 * {(1.3 + 0.1) * (27 * + 20)/[0.1013 * (27 * + 30) * 0.992]｝ = 17.93kg/ m 3
②Real Flow:
QS = Q20r20/r
QSmax = Q20maxρ20/ρ1=110*1.331/17.93=8.166
QSmin=Q20minρ20/ρ1=10*1.331/17.93=0.742
③ Lub raj hlau rotameter tiag tiag ua haujlwm cov mis:
QNmax=QSmax/0.2696=8.166/0.2696=30.29
QNmin = QSmax/0.2696=0.742/0.2696=2.75

Raws li peb ua tib zoo xam, kev ua haujlwm zoo thiab kev tswj xyuas nruj, tom qab kev teeb tsa, nws ua haujlwm zoo, nws txhim kho cov neeg siv khoom ua haujlwm zoo, cov khoom zoo tau lees paub los ntawm peb cov neeg siv khoom.