论文信息 - Detection of incipient cavitation and the best efficiency point of a 2.2MW centrifugal pump using Acoustic Emission

Detection of incipient cavitation and the best efficiency point of a 2.2MW centrifugal pump using Acoustic Emission

Pumps play a significant role in industrial plants and need continuous monitoring to minimize loss of production. This paper investigates the application of Acoustic Emission (AE) for detecting incipient cavitation. In addition this paper presents results from an ongoing programme to ascertain the applicability of the AE technique for determining the best efficiency point (BEP) of an operating system. A large-scale pump rig (2.2MW) formed the basis of this investigation that included a series of NPSH (Net Positive Suction Head) and performance tests. Results obtained demonstrate the successful use of the AE technique for detecting incipient cavitations and identifying the BEP for a system employing pumps.

L. Alfayez | G. Dyson

[1] D Mba,et al. Bearing defect diagnosis and acoustic emission , 2003 .

[2] David,et al. Observations of acoustic emission activity during gear defect diagnosis , 2003 .

[3] J. R. Houghton,et al. Cavitation Monitoring of Hydroturbines with RMS Acoustic Emission Measurement , 1994 .

[4] D Mba,et al. Detection of shaft-seal rubbing in large-scale power generation turbines with acoustic emissions. Case study , 2004 .

[5] John Alexander Steel,et al. Detection of incipient cavitation in pumps using acoustic emission , 1997 .

[6] D Mba,et al. Condition monitoring of low-speed rotating machinery using stress waves Part 1 , 1999 .