Determination of Reliability of Rotor-Annular Seals System by Theory of Runs of Random Functions

Article Preview

Abstract:

The paper discusses forced combined angular-radial oscillations of rotor centrifugal pump model under the influence of random forcings. System reliability is evaluated using the theory of random functions runs: the probability of finding a random vector of quality system “rotor-annular seals” in the range of admissible values of its parameters is determined. Evaluation of the influence of erosive wear of sealing surfaces in the process of pump operating on reliability system is made.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

350-355

Citation:

Online since:

September 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] Black H.F., Effects of Hydraulic Forces in Annular Pressure Seals on the Vibrations of Centrifugal Pump Rotors, J. of Mechanical Engineering Science, Vol. 11, N2 (1969) 206-213.

DOI: 10.1243/jmes_jour_1969_011_025_02

Google Scholar

[2] Chen W.C., Jackson E.D., Eccentricity and Misalignment Effects on the Performance of High-Pressure Annular Seals, ASLE Transactions, 28 (1984) 104-110.

DOI: 10.1080/05698198508981601

Google Scholar

[3] Childs D.W., Dynamic Analysis of Turbulent Annular Seals Based On Hirs Lubrication Equation, Trans. ASME: J. Lubr. Tech., 105, N3 (1983) 429-436.

DOI: 10.1115/1.3254634

Google Scholar

[4] San Andres L., Dynamic Force and Moment Coefficients for Short Length Annular Seals, Journal of Tribology, Vol. 115, N1 (1993) 61-70.

DOI: 10.1115/1.2920987

Google Scholar

[5] Martsynkovskyy V.A., Hydrodynamics and strength of centrifugal pumps, Mashinostroenie, Moscow, (1970).

Google Scholar

[6] Tarasevich Y., Development of calculation methods of rotor vibration state in annular seals, PhD thesis, Kharkiv, (2006).

Google Scholar

[7] Tarasevich Y., Savchenko E., Random oscillations of one-mass model of rotor in annular seals, Compressor and power engineering, N3 (21) (2010) 43-45.

Google Scholar

[8] Tarasevich Y., Savchenko E., Probabilistic Method for Evaluation of Dynamic Characteristics of Rotor in Annular Seals, Procedia Engineering, Vol. 39 (2012) 238–243.

DOI: 10.1016/j.proeng.2012.07.030

Google Scholar

[9] Bolotin B.B., Application of probability theory methods and reliability analysis in calculations of structures, Stroyizdat, Moscow, (1971).

Google Scholar

[10] Ratner A.V., Zelensky V.G., Erosion of materials of thermal power equipment, Energy, Moscow, (1966).

Google Scholar

[11] Tarasevich Y., Savchenko E., Influence of random parameters on performance of centrifugal pump, International scientific conference Mathematical problems of technical mechanics - 2011, Dnepropetrovsk, (2011).

Google Scholar