Studying on the Application of Using Audible Sound to Detect Cavitation Phenomenon in a Centrifugal Pump

Hua Ping Guo; Shang Liang Zhao; Ning Li; Cheng Tian

doi:10.4028/www.scientific.net/AMM.602-605.1815

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 602-605Studying on the Application of Using Audible Sound...

Studying on the Application of Using Audible Sound to Detect Cavitation Phenomenon in a Centrifugal Pump

Abstract:

Cavitation within a centrifugal pump can cause more undesirable effects, damage of the pump by pitting and erosion and structure vibration and resulting noise, therefore it must be prevented. To prevent the onset of the cavitation, we have to detect the beginning of the cavitation process, the emitted noise can also be used, among other possibilities. Experiments have shown that there is a discrete frequency tone within the audible noise spectra, which is strongly dependent on the cavitation process and its development. Therefore, the discrete frequency tone was separated from the noise spectra of cavitating pumps and then used to detect the incipient of cavitation and its development.