Operation method of the online cutting pump
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How to perform online pump switching to minimize flow fluctuations? I would like to ask the experts here!
It is necessary to specify what kind of pump it is. In the case of variable-frequency control, it is relatively easy to reduce the frequency of one unit by a certain amount and increase the frequency of the other unit by an equivalent amount. It’s best to make small adjustments each time
Theoretically, if it is ensured that no significant pressure fluctuations occur in the outlet pipeline during the startup of the standby pump or when shutting it down, then the outlet flow rate should remain relatively stable. Therefore, after the standby pump is started and the outlet valve is opened, the outlet valve of the other pump should be gradually closed. In practice, however, once the standby pump is started and the outlet valve is fully open with no issues in operation, the other pump is shut down quickly – choosing short-term pain over long-term problems. This causes a brief fluctuation in the flow rate, but this can be controlled by adjusting the control valve, allowing the flow rate to return to stability quickly; as a result, the impact on production is likely to be minimal.