Journal of Vibration and Sound

Journal of Vibration and Sound

Reducing piping vibrations of direct regeneration process compressors with the help of vibration analysis and modal analysis

Author
Saeed Shirvani Shahenayati
CM EXPERT at OICO
Abstract
Lobe compressors are one of the most important compressors used in the steel industry, and the occurrence of any failure in this equipment leads to production stoppage and imposing heavy losses on steelmaking units. Neglecting to monitor the precise condition of lobe compressors has led to the growth of the vibration range of the compressor as well as the adjacent equipment and piping, and in addition to creating misalignment between the compressor, gearbox and electric motor, it has led to the failure of bearings and the failure of precision instrument connections and branching of piping lines upstream. And it will be downstream of the compressors.In addition to the negative consequences of increasing the cost of repairs and reducing production, this issue will cause risks such as process gas leakage. In this article, the study and solution of the vibration problem of the mentioned equipment in one of the country's steelmaking complexes has been discussed.
Keywords
Condition monitoring
piping vibrations
modal analysis
lobe compressor vibrations
Subjects
[1] Bathe, Klaus-Jürgen, Finite element procedures, Klaus-Jurgen Bathe, 2006.
[2] Nithiarasu, P., R. Taylor, J. zhu, and O. Zienkiewicz, "The finite element method, Vol.3", 1977.
[3] Shymanskyi, Volodymyr, and Yaroslav Sokolovskyy, "Variational formulation of the stress-strain problem in capillary-porous materials with fractal structure", In 2020 IEEE 15th International Conference on Computer Sciences and Information Technologies (CSIT), 2020, Vol.1, pp.1-4, IEEE.
[4] Bathe, Klaus Jürgen, Eduardo Dvorkin, and Lee W. Ho, "Our discrete-Kirchhoff and isoparametric shell elements for nonlinear analysis—an assessment", Computers & Structures, 1983, Vol.16, no.1-4, pp.89-98.
[5] Gadala, M. S., GA'E. Oravas, and M. A. Dokainish, "A consistent Eulerian formulation of large deformation problems in statics and dynamics", International Journal of Non-Linear Mechanics, 1983, Vol.18, no.1, pp.21-35.
[6] Ewins, David J., Modal testing: theory, practice and application, John Wiley & Sons, 2009.
[7] Yang, J-G., T. M. Murray, and R. H. Plaut, "Three-dimensional finite element analysis of double angle connections under tension and shear", Journal of Constructional Steel Research, 2000, Vol.54, no.2, pp.227-244.
[8] Wijker, Jaap, and Jaap Wijker, "Modal Analysis", Mechanical Vibrations in Spacecraft Design, 2004, pp.73-93.
Journal of Vibration and Sound
Volume 12, Issue 23 - Serial Number 23
September 2023
Pages 177-190