Detection of pump cavitation by vibration signature

Abdulaziz, A. M.; Kotb, Ashraf

doi:10.1080/14484846.2015.1093261

Cited by 18 publications

(11 citation statements)

References 5 publications

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“…This is due to occurrence of super-cavitation, which makes the operation of the pump impeller noisier due to vibration. Similar relationship was found by Abdulaziz and Kotb (2017).…”

Section: Sound Pressure Analysissupporting

confidence: 87%

“…Rehman et al (2017) investigated that with the decrease in NPSH of the pump, the cavitation rises with the increase in vapour volume fraction on the blade surface. According to Abdulaziz and Kotb (2017), when pump operation shifts from non-cavitating to cavitating conditions, the vibration level increases when first blade passing frequency signs vibration spectrum with the presence of high energy at high frequency. The results revealed that using transient state analysis is capable of computing the noise produced by the pump due to cavitation.…”

Section: Introductionmentioning

confidence: 99%

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Detection of Cavitation through Acoustic Generation in Centrifugal Pump Impeller

Jaiswal

Rehman

Paul

et al. 2019

JAFM

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The most common device which transport fluid in industries, agriculture as well as domestic water supply is the centrifugal pump. Based on fluid transfer conditions, several let-downs are occur in the centrifugal pump, cavitation is one among them. The flow pattern at the eye of impeller deviates from the ideal case with the occurrence of cavitation. Due to cavitation, vibration occurs on blades that generates noise in pump. In this study, the acoustics generated in centrifugal pump impeller due to cavitation is detected with the sound pressure by using 3-Dimensional, steady and unsteady state computational fluid dynamics (CFD) analysis of an industrial centrifugal pump impeller. Harmonic force analysis with blade row model helps in finding the sound pressure. The acoustics generated with unsteady-state is compared with cavitation at steady-state CFD analysis. The Reynolds averaged Navier-Stokes equations model as well as Shear Stress Transport (SST) turbulence model are used for the CFD simulation. The results show that the sound pressure calculated increases with the increase in cavitation (i.e. formation of vapour bubbles and sudden drop in head) which shows that high noises are generated by centrifugal pump impeller at lower net positive suction head (NPSH) at a particular discharge.

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“…This is due to occurrence of super-cavitation, which makes the operation of the pump impeller noisier due to vibration. Similar relationship was found by Abdulaziz and Kotb (2017).…”

Section: Sound Pressure Analysissupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Detection of Cavitation through Acoustic Generation in Centrifugal Pump Impeller

Jaiswal

Rehman

Paul

et al. 2019

JAFM

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“…In some cases, the lower limit of the frequency band more sensitive to cavitation inception was higher, of about 10 kHz, while the upper limit was 15 kHz in Abdulaziz and Kotb 20 and Kallingalthodi, 21 20 kHz in Wu et al. 22 and again in Kallingalthodi, 21 25 kHz in Zhang et al.…”

Section: Test Methodologymentioning

confidence: 96%

Experimental analysis of the influence of polymer solutions on performances and cavitation of small size pumps for professional appliances

Burlon

Micheli

Simonato³

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Pumps used in professional appliances process a solution of water, soils residues and detergents. These affect vapor tension, viscosity and rheology of the solution, mainly due to the presence of surfactants and polymers. Only a few studies have been found on how these substances can influence pump performances. Therefore, an experimental analysis has been carried out with aqueous solutions of a detergent component, the Polyox WSR 301, in the concentration range of 100–7000 ppm, to evaluate their influence on pump performances and cavitation. Some properties of the solutions have been preliminary characterized with a rheometer. Then, each solution has been tested in a dedicated test rig, to compare the performance curves of a centrifugal pump used in professional warewashing machines with those obtained with pure water. A non-intrusive method, based on the investigation of high frequency vibrations and noise signals, has been developed to detect cavitation at its early stage of inception. It was observed that polymer mitigates cavitating pump vibrations, with a reduction of the acceleration to less than one g. The analysis has provided the data necessary for the successive development of a control strategy for pump operation in professional appliances.

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“…Various impeller faults were observed. Abdulaziz et al [35] Vibration signature analysis Cavitation fault detection in the centrifugal pump by vibration analysis.…”

Section: Vibration Analysismentioning

confidence: 99%

SVM Algorithm for Vibration Fault Diagnosis in Centrifugal Pump

Dutta¹,

Palanisamy²,

Shanmugam³

2023

Intelligent Automation &Amp; Soft Computing

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Vibration failure in the pumping system is a significant issue for industries that rely on the pump as a critical device which requires regular maintenance. To save energy and money, a new automated system must be developed that can detect anomalies at an early stage. This paper presents a case study of a machine learning (ML)-based computational technique for automatic fault detection in a cascade pumping system based on variable frequency drive (VFD). Since the intensity of the vibrational effect depends on which axis has the most significant effect, a three-axis accelerometer is used to measure it in the pumping system. The emphasis is on determining the vibration effect on different axes. For experiment, various ML algorithms are investigated on collected vibratory data through Matlab software in x, y, z axes and performances of the algorithms are compared based on accuracy rate, prediction speed and training time. Based on the proposed research results, the multiclass support vector machine (MSVM) is found to be the best suitable algorithm compared to other algorithms. It has been demonstrated that ML algorithms can detect faults automatically rather than conventional methods. MSVM is used for the proposed work because it is less complex and produces better results with a limited data set.

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Detection of pump cavitation by vibration signature

Cited by 18 publications

References 5 publications

Detection of Cavitation through Acoustic Generation in Centrifugal Pump Impeller

Detection of Cavitation through Acoustic Generation in Centrifugal Pump Impeller

Experimental analysis of the influence of polymer solutions on performances and cavitation of small size pumps for professional appliances

SVM Algorithm for Vibration Fault Diagnosis in Centrifugal Pump

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