Study on Vibrations in Centrifugal Pump Due to Dynamic Loading

Ravindra S. Birajdar; A. A. Keste

doi:10.15866/ireme.v11i6.12956

Study on Vibrations in Centrifugal Pump Due to Dynamic Loading

Ravindra S. Birajdar^(1*), A. A. Keste⁽²⁾

^(*) Corresponding author

Authors' affiliations

DOI: https://doi.org/10.15866/ireme.v11i6.12956

Abstract

Centrifugal pumps are considered as a critical equipment for power plants, water supply, process industries and petrochemical industries. Being a rotating equipment, there are various types of dynamic forces generated during operation. It is very important for designers to understand the types of forces and their origin. The dynamic forces with a certain excitation frequency cause vibrations in the pump. It is advisable that the vibrations in the pumps remain within acceptable limits of applicable standards. If there are higher levels of vibrations, then it not only leads to operational inefficiencies but also causes pump failures. In this paper, a case study of an horizontal split case pump is discussed. The pump was exhibiting high vibrations at the operating frequency. With a systematic analysis of the frequency spectrum and disassembling the pump for inspection, the root cause of the vibration was identified. The pump was rectified to comply with vibration norms as recommended by applicable standards.
Copyright © 2017 Praise Worthy Prize - All rights reserved.

Keywords

Pump Vibration; Dynamic Loads; Pumping System; Synchronous Vibration; Hydraulic Aspects

Full Text:

PDF

References

Hydraulic Institute Standard (HIS) 9.6.4, Rotodynamic Pumps for Vibration Measurements and Allowable Values, (USA) 2009.
http://dx.doi.org/10.1016/s0262-1762(09)70075-6

W.E. Nelson, Pump Vibration analysis for The Amateur, Proceedings of the Fourth International Pump Symposium, Vol.1, n.1, pp.109-120,2008.

J.F. Gulich, Centrifugal Pumps, 2nd edition Springer - Verlag Berlin Heidelberg, 2010.

S. Florjancic and A. Frei, Dynamic Loading on Pumps- Causes for Vibrations, Proceedings of the Tenth International Pump Users Symposium, Vol.1, n.1, pp.171-184.
http://dx.doi.org/10.1016/s0262-1762(99)91338-x

ISO 1940-1, Mechanical Vibration Balancing Quality requirements for Rotors, 2003.
http://dx.doi.org/10.3403/bs6861

ISO 10816-1, Mechanical Vibration-Evaluation of machine vibration by measurements on non-rotating parts- Part 1, General guidelines.
http://dx.doi.org/10.3403/00737904u

D. Florjancic, Trouble Shooting, Handbook for Centrifugal pumps, Turbointitut d.d. Ljubljana, Slovenia, 2008
http://dx.doi.org/10.1016/s0262-1762(04)00298-6

J. K. Sinha and A. Rama Rao, Vibration Diagnosis of Failure of Mechanical Coupling between Motor and Pump Rotors, International Journal of Acoustics and Vibration, Vol.10, n.2, pp.89-92, 2005.
http://dx.doi.org/10.20855/ijav.2005.10.2178

R.S. Birajdar, Ms. R.V. Patil, Vibration and Noise in Centrifugal Pumps - sources and diagnosis method, 3rd International Conference on Integrity, Reliability and Failure, Porto/Portugal, pp.20-24, 2009.
http://dx.doi.org/10.1016/b978-0-08-050085-0.50021-7

Japanese Industrial Standard (JIS), B8327, Testing methods for performance of Pump, using model pump, 2002.
http://dx.doi.org/10.1299/jsmemag.75.639_529

Y. Yoshida, Y. Tsujimoto, T. Kawakami and T. Sakatani, Unbalanced Hydraulic Forces Caused by Geometrical Manufacturing Deviations of Centrifugal Impellers, Journal of Fluid engineering, Vol.120, n.3, pp.531-53 1998.
http://dx.doi.org/10.1115/1.2820695

A.E. Khalifa, Effect of Blade Exit Shape on Performance and Vibration of a Double Volute Centrifugal Pump, International Journal of Materials, Mechanics and Manufacturing, Vol. 2, n. 4, pp.261-264,2014.
http://dx.doi.org/10.7763/ijmmm.2014.v2.139

Kassanos, I., Chrysovergis, M., Anagnostopoulos, J., Charalampopoulos, G., Rokas, S., Lekanidis, S., Kontominas, I., Papantonis, D., Numerical Optimization of a Centrifugal Pump Impeller with Splitter Blades Running in Reverse Mode, (2016) International Review of Mechanical Engineering (IREME), 10 (4), pp. 215-224.
http://dx.doi.org/10.15866/ireme.v10i4.8375

El-Jouni, A., Guisser, M., Salhi, M., A Sliding Mode Optimization of a Photovoltaic Pumping System, (2014) International Review on Modelling and Simulations (IREMOS), 7 (3), pp. 466-473.

Zitouni, N., Andoulsi, R., Sellami, A., Mhiri, R., Bond Graph Modelling of a UV Water Disinfection Pilot Unit Fed by a Photovoltaic Source, (2015) International Journal on Engineering Applications (IREA), 3 (5), pp. 149-157.

Zegrar, M., Zerhouni, F., Midoun, A., Design and Implementation of a Multilevel Inverter Fed by Photovoltaic Generators with MPPT, (2014) International Review of Electrical Engineering (IREE), 9 (6), pp. 1097-1102.
http://dx.doi.org/10.15866/iree.v9i6.4779

Refbacks

There are currently no refbacks.

Username
Password
Remember me