Prediction of Cavitation in Centrifugal Pump Using IIOT

Abstract

Cavitation normally generates random, high frequency broadband energy, which is Sometimes superimposed with the blade pass frequency harmonics. Gases under pressure Can dissolve in liquid. When the pressure is reduced, they bubble out of the liquid. In a Similar way, when liquid is sucked into a pump, the liquid’s pressure drops. Under Conditions when the reduced pressure approaches the vapor pressure of the liquid (even at Low temperatures), it causes the liquid to vaporize. As these vapor bubbles travel further Into the impeller, the pressure rises again causing the bubbles to collapse or implode. This implosion has the potential to disturb the pump performance and cause damage to the Pump’s internal components. This phenomenon is called cavitation. Each implosion of a bubble generates a kind of impact, which tends to generate high-frequency random vibrations. Cavitation can be quite destructive to internal pump components if left uncorrected. It is often responsible for the erosion of impeller vanes. Measurements to detect cavitation are usually not taken on bearing housings, but rather on the suction piping or pump casing. simulate cavitation/non- cavitation in centrifugal pump.