On a method for vibration-based diagnostics of gas compressor units

Authors

UDC

539.32, 534-16

EDN

FBITPS

DOI:

10.31429/vestnik-23-1-22-29

Abstract

In this study, the authors propose a diagnostic methodology for assessing the technical condition of gas compressor units (GCUs) based on the analysis of the system's stiffness parameters. A mathematical model describing three coupled harmonic oscillators has been developed to simulate the dynamic behavior of the unit. Using experimental data — specifically, the vibration velocity spectrum recorded at a compressor station — the system's stiffness parameters were determined numerically. A dimensionless diagnostic combination, dependent on the stiffness coefficients of the elastic couplings between system components, has been introduced. Deviations in the value of this dimensionless combination during GCU operation enable the detection of defects such as bearing liner wear, increased clearances, degradation of the oil-film damping properties, and loosening of support connections. The proposed methodology enables non-destructive, in-service monitoring of GCUs, thereby enhancing operational reliability and preventing failures at compressor stations of trunk gas pipelines.

Keywords:

defects, vibration spectrum, GCU diagnostics, oscillatory system, diagnostic parameters of GCUs

Funding information

The study did not have sponsorship.

Authors info

  • Vladislav I. Dunaev

    д-р физ.-мат. наук, профессор кафедры газонефтетранспортных систем и оборудования нефтяной и газовой промышленности Кубанского государственного технологического университета

  • Aleksey V. Bunyakin

    канд. физ.-мат. наук, доцент кафедры математических и компьютерных методов Кубанского государственного университета, доцент кафедры нефтегазового дела и землеустройства филиала Майкопского государственного технологического университета в поселке Яблоновском

  • Anton V. Vladimirov

    инженер кафедры газонефтетранспортных систем и оборудования нефтяной и газовой промышленности Кубанского государственного технологического университета

References

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Issue

Vol. 23 (2026) No. 1

Pages

22-29

Section

Mechanics

Dates

Submitted

December 9, 2025

Accepted

January 28, 2026

Published

March 24, 2026

How to Cite

[1]
Dunaev, V.I., Bunyakin, A.V., Vladimirov, A.V., On a method for vibration-based diagnostics of gas compressor units. Ecological Bulletin of Research Centers of the Black Sea Economic Cooperation, 2026, т. 23, № 1, pp. 22–29. DOI: 10.31429/vestnik-23-1-22-29

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Copyright (c) 2026 Дунаев В.И., Бунякин А.В., Владимиров А.В.

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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