Issue of non-additive flow in parallel operation of circulating water pumps
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On site, we encountered the issue that connecting two water pumps in parallel did not increase the flow rate; the flow rate with both pumps running in parallel was the same as that when just one pump was in operation
I think the reason must be the restriction in the main inlet pipe; the flow rate of liquid entering is insufficient
We need to check whether both pumps are operating properly after being connected in parallel. Under normal circumstances, the flow rate of pumps running in parallel should increase
Do the two pumps share an inlet pipe or have separate inlet pipes? Is there any change in the outlet pressure after parallel connection?
Check whether there is a significant difference in current between the two pumps, and whether one of them is not working properly, resulting in an outlet pressure that is lower than that of the other pump
1. Check whether the incoming flow at the inlet is insufficient? 2. Check whether Yang Cheng’s level is too high; if so, increase the valve opening