Centrifugal pumps with regulated return valve and current
Time:
2021-11-12
The performance of centrifugal pumps is curvilinear in nature and not completely linear. The shaft power consumed by a centrifugal pump is only related to the flow rate of the pump, which is related to the outlet pressure.
The performance of centrifugal pumps is curvilinear in nature and not completely linear. The shaft power consumed by a centrifugal pump is only related to the flow rate of the pump, which is related to the outlet pressure. When a centrifugal pump has a return flow, which corresponds to a lower outlet pressure, the flow rate of the centrifugal pump increases compared to the rated state, so the current of the centrifugal pump increases. When you close the centrifugal pump's return valve, the centrifugal pump's output flow is actually reduced, the centrifugal pump requires less shaft power, so the motor current responds to reduce. Centrifugal pumps can achieve flow rate adjustment simply by adjusting the outlet valve directly. The role of the installation of the return pipe is only related to the process, of course, there are also centrifugal pumps in the compression of the actual flow rate when the return valve is opened, in order to alleviate the centrifugal pump pressure inside the seal of the damage.
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