An analysis of existing methods for determining the natural frequencies of torsional vibrations of the shaft trains in power turbine units is carried out in order to assess the potential for using changes in natural frequencies to diagnose shaft damage. A computational modeling of torsional vibrations of a shaft train having a circumferential crack allowed informative natural frequencies to be determined for the purposes of detecting damages and the locations of natural frequency measurements to be established to a satisfactory degree of accuracy. An assessment of changes in natural frequencies from depth and characteristic locations of a circumferential crack is carried out. An alternative method for detecting violations of the shaft train integrity, based on monitoring changes in the angles of static twisting, is also considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. G. Kostiuk, Dynamics and Strength of Turbomachines. Textbook for Universities [in Russian], Mashinostroenie, Moscow (1982).
N. W. Duncan, Torsional Vibration of Turbo-Machinery, https://books.google.ru/books?Id=RRTKEawblAoC (2003).
D. V. Taradai, Yu. A. Deomidova, A. Z. Zile, and S. B. Tomashevskii, “Research results of torsional vibrations of shaft train in turbine units,” Teploénergetika, 23 – 33 (2018).
H. Abdi, H. Nayeb-Hashemi, and A. M. S. Hamouda, “Torsional dynamic response of a shaft with longitudinal and circumferential cracks,” J. Vibr. Acoustics, 136, 8 (2014).
L. A. Zhuchenko, V. V. Ermolaev, A. I. Shklyar, L. A. Vinokurova, M. V. Velikovich, E. D. Barinberg, and Yu. A. Sakhnin, “Damage problems of low-temperature rotors in cogeneration steam turbines,” Élektr. Stantsii, No. 10, 36 – 41 (2006).
X. Xiea, Y. Donga, H. Liub, and J. Kangc, “Identifying torsional modal parameters of large turbine generators based on the supplementary-excitation-signal-injection test,” Int. J. Electr. Power Energy Syst., 56, 1 – 8 (2014).
Pat. RF No. 2233455. M. I. Kiselev and V. I. Pronyakin, “Method of experimental determination of the amplitude-frequency and phase-frequency characteristics for the rotor swinging of a synchronous generator in the operating mode,” appl. 03/15/02, publ. 09/10/03, Byull. Otrkyt. Izobret., No. 25 (2003).
A. Z. Zile, D. V. Taradai, S. B. Tomashevskii, and Yu. A. Shuranova, “Research of torsional vibrations of shaft train in turbine units,” Élektr. Stantsii, No. 10, 40 – 48 (2013).
M. A. Biyalt, P. E. Chernok, E. V. Bochkarev, A. V. Kistochev, and E. V. Uriev, “Relevance and problems of implementation of torsional vibration monitoring for the shaft train of turbine units at power plants,” Élektr. Stantsii, No. 8, 50 – 57 (2013).
A. N. Morozov, A. L. Nazolin, and V. I. Polyakov, “Precision optoelectronic system for monitoring torsional vibrations of the shaft train in a turbine unit,” Dokl. RAN, 472(2), 1 – 5 (2017).
A. L. Nazolin, V. I. Polyakov, and S. E. Gnezdilov, “Diagnostics of the integrity of shaft train in high power turbine units by torsional vibrations,” Teploénergetika, No. 1, 32 – 43 (2020).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Élektricheskie Stantsii, No. 6, June 2020, pp. 35 – 40.
Rights and permissions
About this article
Cite this article
Popov, D.M., Zile, A.Z., Taradai, D.V. et al. Diagnostic Damage Control of Shaft Trains in Turbine Units According to Torsional Vibration Parameters. Power Technol Eng 54, 555–559 (2020). https://doi.org/10.1007/s10749-020-01250-7
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10749-020-01250-7