How do you calculate pipeline flow?
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Pipe cross-sectional area x pipe flow velocity; where does the pipe flow velocity come from?
During design, the pipe flow velocity is determined first; the flow velocity is one of the main factors affecting pipe pressure loss； Once the flow rate is selected, the flow volume can be calculated
In actual production, the flow rate is based on the pump’s rated flow rate, or the flow velocity is determined by using the flow meter reading and inversely calculating it based on the pipe diameter. During the design phase, refer to the optimal flow velocity for fluids; HG/T20570.6-95 can be used as a reference
For gaseous, liquid, and two-phase media, standards specify requirements regarding flow velocity.
If there is a flow meter, then of course use it; if not, an external ultrasonic flow meter can be considered. If that’s not available either, estimation is the only option, by referring to the safe flow velocity range corresponding to the pipe diameter