The impact of the multi-gap seals on rotor dynamics

Author(s): V. A. Martsynkovskyy, O. O. Pozovnyi

Affilation(s): Sumy State University, 2 Rymskogo-Korsakova St., 40007, Sumy, Ukraine

*Corresponding Author’s Address:  [email protected]

Issue: Volume 4; Issue 1 (2017)

Paper received: March 14, 2017
The final version of the paper received: May 25, 2017
Paper accepted online: May 29, 2017

Martsynkovskyy V. A., Pozovnyi O. O. The impact of the multi-gap seals on rotor dynamics. Journal of Engineering Sciences, Vol. 4(1), 2017, pp. C7-C12, doi: 10.21272/jes.2017.4(1).c2

DOI: 10.21272/jes.2017.4(1).c2

Research Area: Dynamics and Strength. Hermomechanics

Abstract: The research relevance of multi-slotted seals is of practical significance for increasing vibration-reliability of centrifugal pumps. This paper presents the model of a single-disk rotor with seals. The forced radial rotor vibrations are determined taking into account the linearized inertial, damping, gyroscopic, positional, and circulating forces operating on the impeller from the liquid flow side in the annular seals. A theoretical analysis was supplemented with a numerical example, the amplitude-frequency and phase characteristic are presented.

Keywords: seals, rotor, centrifugal pump, frequency characteristics.

Full Text