Can two pumps with different head values be used in parallel?
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One centrifugal pump has a head of 80 meters, and one screw pump. I want to connect them in parallel to pump water into the system. The pressure in the system is 1.2 MPa. Will it work?
This post was last edited by ylb913 on 2016-1-29 at 18:59. I’ve never seen such a combination. The screw pump should not have its outlet restricted, as this can cause overpressure in front of the pump’s outlet valve. Centrifugal pumps can have their outlet restricted, but the flow rate must not be too low, as this can cause the pump to overheat, the fluid to vaporize, and vacuum to occur. But if this traffic level is appropriate, it should be possible to find a reasonable and safe point of integration.
I didn’t look closely at the original poster’s question; I’m not sure what the specific gravity of the medium will be. The highest value I’ve seen is around 1.8.
The centrifugal pump operates at 0.8 MPa; the pressure in the system is too high, so it can’t pump fluid in
So it’s using a screw pump to inject water into the system, right? The pressure in the system is 1.2 MPa. Is it a lack of water? For pumps to be used in parallel, the pressure at their outlets must be higher than the system pressure. It’s definitely not possible to connect centrifugal pumps with a head of 80 meters in parallel.
The head of the centrifugal pump is 0.8 MPa, while the pressure in the system is 1.2 MPa; therefore, it’s not possible to pump fluid in