Can air locking in a centrifugal pump cause the pump to trip?
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Can air locking in a centrifugal pump cause the pump to trip? What is the reason behind this?
Can gas entrapment be considered as the pump being emptied?
Air locking in a centrifugal pump occurs when there is gas inside the pump, preventing normal pressure from being established. The pump will not trip. If there is gas in the liquid pump, it cannot generate sufficient centrifugal force; as a result, the pump fails to convert energy in the liquid, with kinetic energy not being transformed into pressure energy. For reference.
Tripping occurs due to overload; when the pump is stuck in a vapor-lock condition, its flow rate is lower than the rated value, so overload does not occur.
What was said on the third floor is correct; gas binding alone does not cause a trip. However, gas binding, which prevents the pump from drawing in liquid, causes friction or even sticking between the rotating and stationary components (such as the impeller collar and the pump casing collar), which can lead to a shutdown