Pump flow is too high
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I would like to ask everyone: what adverse effects can occur if the pump flow rate remains too high for an extended period of time?
Increased vibration noise, reduced efficiency, etc
I have a water pump; for positive pressure, a motor of around 5 Kw is sufficient, with a flow rate of 50 m3/h and a head of 20 m. I didn’t buy a new pump; instead, I found an unused 11Kw pump with a head of 50m. After using it for a few years, there are now three problems: first, the current is too high, causing the contactor to overheat. Second, the pump vibrates excessively; even with flexible connections in place, the vibration doesn’t subside. Third, leakage occurs at the site due to damaged mechanical seals. But it can still be used
When a pump is overloaded, the most obvious signs are overheating of the motor, increased current, and higher noise levels.
The motor is overloaded; exceeding this limit can lead to overcurrent tripping or cause the electrical components to overheat and get damaged over time. For reference.
Young people have abundant energy and vitality, but they are unable to release it fully, which results in feelings of heat throughout the body and anger
Vibration (including the foundation), high noise, seal leakage, cutting impeller.
In your case, adding an inverter will solve the problem.
Long-term operation inevitably consumes more electricity, and the pipeline pressure increases significantly, which may have an adverse effect on the vibration of the equipment and pipelines. If cutting the impeller can help save energy without affecting the designed flow rate, it can be considered. There is little significance to installing variable frequency control for small pumps.