Identification of the causes of increased vibrations in the high-power multi-stage rotodynamic pump
 
More details
Hide details
1
Institute of Fluid Flow Machinery, Polish Academy of Sciences
2
Group Powen-Wafapomp SA
Online publish date: 2018-08-07
Publish date: 2018-08-07
Submission date: 2018-05-09
Final revision date: 2018-07-01
Acceptance date: 2018-08-03
 
Diagnostyka 2018;19(3):81–88
KEYWORDS:
TOPICS:
ABSTRACT:
The article discusses the vibrodiagnostic tests of a multi-stage high-power rotodynamic pump. The tested pump was operated as a feed water pump in an industrial combined heat and power plant. However, some time ago, its dynamic performance started to deteriorate. Therefore, diagnostic tests were carried out, the aim of which was to identify the reasons for the increased vibration level and to minimise it. The scope of the performed work included both the analysis of possible excitation forces originating from the flow system and measurements of the pump vibrations at different power levels. Additionally, at selected measuring points, vibration velocity spectra were registered and eigenfrequencies were determined. The analysis of the obtained results allowed to clearly identify the causes of dynamic problems and introduce changes that enable their elimination.
CORRESPONDING AUTHOR:
Grzegorz Żywica   
Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Polska
 
REFERENCES (15):
1. Adamkowski A, Żywica G, Janicki W, Lewandowski M. Propagation of structural vibrations and pressure waves in the hydropower turbines. In: Timofiejczuk et al. (eds.), Advances in Technical Diagnostics. ICDT 2016. Applied Condition Monitoring. 2018; 10:29-46. http://dx.doi.org/10.1007/978-....
2. Barszcz T, Bielecki A, Romaniuk T. Application of probabilistic neural networks for detection of mechanical faults in electric motors. Electrical Review 2009; 8/2009: 37-41.
3. Budzilo B, Polok-Kowalska A. Two parametric assessment of water supply subsystem reliability operation for the town of Limanowa. Technical Transactions 2007; 2-S/2007: 29-38.
4. Hupa B, Nieśpiałowski K. Predykcyjny system monitoringu i diagnostyki pomp wirowych średniociśnieniowych. Napędy i Sterowanie 2011; 11/2011: 118-120.
5. Kaczmarczyk TZ, Żywica G, Ihnatowicz E. Experimental investigation on a rotodynamic pump operating in the cogeneration system with a low boiling working medium. Transactions of the Institute of Fluid-Flow Machinery 2016; 134: 63-87.
6. Kaczmarczyk TZ, Żywica G, Ihnatowicz E. Vibroacoustic diagnostics of a radial microturbine and a scroll expander operating in the organic Rankine cycle installation. Journal of Vibroengineering. 2016; 18(6): 4130-4147. http://dx.doi.org/10.21595/jve....
7. Kim HE, Hwang SS, Tan ACC, Mathew J, Choi BK. Integrated approach for diagnostics and prognostics of HP LNG pump based on health state probability estimation. Journal of Mechanical Sciences and Technology 2012; 26(11): 3571-3585. http://dx.doi.org/10.1007/s122....
8. Kiss A, Nowicki R. Monitorowanie i diagnostyka stanu technicznego pomp krytycznych napędzanych silnikami elektrycznymi. Napędy i Sterowanie 2015; 5/2015: 72-83.
9. Koo IS, Kim WW. The development of reactor coolant pump vibration monitoring and a diagnostic system in the nuclear power plant. ISA Transactions 2000; 39: 309-316. http://dx.doi.org/10.1016/S001....
10. Milovančević M, Tijan E, Karanikić P. Optimization of vibro-diagnostic method for marine rotating pumps. Tehnički Vjesnik 2017; 24(3): 703-707. http://dx.doi.org/10.17559/TV-....
11. Nazarova MN, Palaev AG. Diagnostics and repair of centrifugal oil transfer pump rotor shaft. IOP Conf. Series: Earth and Environmental Science 2017; 87: 092016. http://dx.doi.org/0.1088/1755-....
12. Shishlyannikov DI, Vasilyeva MA. Operational control and diagnostics of the equipment by the parameters of the electric drive power supply by the example of deep well pump units. IOP Conf. Series: Materials Science and Engineering 2017; 177: 012013. http://dx.doi.org/10.1088/1757....
13. Siano D, Frosina E, Senatore A. Diagnostic process by using vibrational sensors for monitoring cavitation phenomena in a getoror pump used for automotive applications. Energy Procedia 2017; 126(09): 1115-1122. http://dx.doi.org/10.1016/j.eg....
14. Trymucha J. Badanie niezawodności w zakresie analizy i oceny uszkodzeń elementów przepływowego systemu chłodzenia na przykładzie elektrowni Połaniec. Przegląd Elektrotechniczny 2007; 3: 30-34.
15. Zhou X, Zhang Y, Ji Z, Chen L. The impeller improvement of the centrifugal pump based on BVF diagnostic method. Advances in Mechanical Engineering 2014: 1-9. http://dx.doi.org/10.1155/2014....
eISSN:2449-5220
ISSN:1641-6414