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УДК 62-2:621.65

DOI: 10.15507/0236-2910.027.201704.592-606


The Strength Calculation of the Pump Shaft with a Worn Impeller

Nikolay P. Ovchinnikov
Head of the Department of Mining Machines, Ammosov North-Eastern Federal University (58 Belinsky St., Yakutsk 677000, Russia), Ph.D. (Engineering), ORCID: http://orcid.org/0000-0002-4355-5028, This email address is being protected from spambots. You need JavaScript enabled to view it.

Introduction: This paper presents the study of the impeller wear influence on stress-strain state of a centrifugal pump shaft. In agro-industrial sector, centrifugal pumps are used for watering various agricultural crops. During pumping water, a centrifugal pump impeller is usually a subject to influence of various irreversible physical-and-mechanical and physical-and-chemical processes that can result in a certain reduction in its mass.
Materials and Methods: We used a comprehensive approach including the analysis of a sufficient number domestic and foreign publications on the research topic and parametric studies conducted on a laboratory-pumping unit. We had modern vibration-based diagnostic equipment, the mathematical models of loading a pump shaft and a finite-element modeling in APM Win Machine software (Beam module).
Results: The comparison of the maximum equivalent dynamic stresses obtained according to the proposed method with existing methods for carrying out the checking strength calculation of a centrifugal pump shaft showed that account of the impeller wear significantly changes picture of stress-strain state shaft.
Discussion and Conclusions: The amendments proposed by the author in checking strength calculation of a centrifugal pump shaft will allow estimating its stress-strain state in certain production situations.

Keywords: centrifugal pump, shaft, strength calculation, impeller, wear

For citation: Ovchinnikov N. P. Strength Calculation of the Pump Shaft with a Worn Impeller. Vestnik Mordovskogo universiteta = Mordovia University Bulletin. 2017; 27(4):592–606. DOI: 10.15507/0236-2910.027.201704.592-606


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