Co-current pipeline
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When the outlet pipelines of two centrifugal pumps with different head values and flow rates are connected in parallel, how does the water flow through these pipelines? The parallel outlets are open to the atmosphere; will water flow in reverse from the side with the higher head to the pump with the lower head? Dear experts, please give me your guidance
If there is backpressure, pumps with low head may stop operating due to this pressure.
The lower-pitched pump may be short-circuited or partially short-circuited; backflow will not occur unless there is a significant difference between the two pumps. It depends mainly on the intersection point of the pump curve and the system curve to determine the operating point of each pump
What if the pipeline head pressures at the connection points are all similar? The diameter of the parallel pipes has increased
Since slurry is being transported, blockages are likely to occur; therefore, check valves are not installed at the outlets of either pump
By overlaying the curves of the two pumps to obtain a new curve, and then comparing this new curve with the respective original curves, it is possible to determine the performance of each pump at specific operating points