Results of Dynamic Tests of Self-Aligning Cylindrical and Disc-Shaped Rotors in Slot Seals

Hydrodynamic forces in slot seals of centrifugal pumps create a significant effect on the vibrational activity of the rotor. Amplitude frequency responses (AFRs) describe forced radial-angular self-aligning oscillations in slot seals of rotors of cylindrical and disk geometric configurations at vari...

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Bibliographic Details
Published in:Chemical and petroleum engineering 2022-05, Vol.58 (1-2), p.125-132
Main Authors: Gorovoi, S. A., Golovchenko, G. S.
Format: Article
Language:English
Subjects:
Angular velocity
Centrifugal force
Centrifugal pumps
Chemistry
Chemistry and Materials Science
Dynamic characteristics
Dynamic stability
Dynamic tests
Geotechnical Engineering & Applied Earth Sciences
Industrial Chemistry/Chemical Engineering
Industrial Pollution Prevention
Mineral Resources
Oscillations
Pressure drop
Rotors
Self alignment
Working fluids
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Summary:Hydrodynamic forces in slot seals of centrifugal pumps create a significant effect on the vibrational activity of the rotor. Amplitude frequency responses (AFRs) describe forced radial-angular self-aligning oscillations in slot seals of rotors of cylindrical and disk geometric configurations at various pressure drops of the working fluid on the seals. Experimentally obtained AFRs of the rotors were used to determine the critical angular velocities of the radial and angular oscillations of the rotors in slotted seals, as well as the limits of their dynamic stability. Theoretical calculations of the angular velocities of the natural radial and angular vibrations of the rotor in slot seals, as well as the limits of their dynamic stability, are in good quantitative agreement with the experimental data. A conclusion about the more stable dynamic characteristics of the disk rotor in comparison with the cylinder rotor is presented.
ISSN:0009-2355
1573-8329
DOI:10.1007/s10556-022-01065-5