TRIBOMONITORING OF THE COMPRESSOR BEARING  OF A GAS TURBINE UNIT

Mikhail Shalygin; Elena Yevtukh; Grigory Yevtukh

doi:doi:10.30987/2782-5957-2024-10-12-17

UDC 620.193 UDC 620.197 UDC 622.6 Russian Library and Bibliographic Classification 344

TRIBOMONITORING OF THE COMPRESSOR BEARING OF A GAS TURBINE UNIT

Published в Transport engineering · Volume 2024, Issue 10, 2024 · Pages 12–17 · Rubrics: Mechanical engineering

DOI 10.30987/2782-5957-2024-10-12-17

Received: 19.08.2024 Accepted: 11.09.2024 Published: 30.10.2024

Authors

Mikhail Shalygin ¹ iD · Elena Yevtukh ² · Grigory Yevtukh ³

1 Bryansk State Technical University (Department of Turbine Engineering and Pipeline Transport Systems, Professor, Head of the Department)
Bryansk, Bryansk, Russian Federation

2 Bryansk State Technical University (Department «Pipeline Transport Systems», Associate Professor)
Bryansk, Bryansk, Russian Federation

3 Bryansk State Technical University (Postgraduate Student)
Bryansk, Bryansk, Russian Federation

ABSTRACT

A gas turbine unit is an object of increased danger, therefore, timely forecasting of repair and replacement of its components is an urgent task. The paper presents the main provisions of tribomonitoring concept of sliding bearings of gas turbine superchargers in order to predict their wear. Fluctuations in gas turbine units are considered from the point of view of vibration appearing in the bearing. A correlation graph of the wear curve and vertical vibrations is presented, showing the relationship between the inclination angles of the run-in curve and vertical vibration. A method to determine the maximum permissible wear of the bearing liner is proposed, based on the analysis of the experimental Abbott-Firestone curves before and after the wear. It is shown that it is sufficient to obtain a single typical Abbott-Firestone curve after wear for bearings of the same manufacturer and of one series. A technique to find out the relationship of wear particles in the lubricant flow obtained from sensors by the granulometric method and the wear limit value of the bearing liner according to the Abbott-Firestone curve is presented. It is shown that in order to find out the relationship between vibration and wear in practice, it is necessary to construct a combined vibration graph and obtain a point of wear value at the moment of maximum permissible vibration.

KEYWORDS

tribomonitoring bearing wear support curve vibrations

Information

Authors:

1. Bryansk State Technical University (Department of Turbine Engineering and Pipeline Transport Systems, Professor, Head of the Department)

Bryansk, Bryansk, Russian Federation

2. Bryansk State Technical University (Department «Pipeline Transport Systems», Associate Professor)

Bryansk, Bryansk, Russian Federation

3. Bryansk State Technical University (Postgraduate Student)

Bryansk, Bryansk, Russian Federation

Type:

Article

Pages:

from 12 to 17

Status:

Published

Subject area:

UDC 620.193
UDC 620.197
UDC 622.6
Russian Library and Bibliographic Classification 344

Language:

Russian

Keywords:

tribomonitoring, bearing, wear, support curve, vibrations

References

1. Shalygin MG, Evtukh ES, Evtukh GE. Wear resistance of gas-dynamic compressor bearings. Construction and Road Machines. 2023;6:35-38.

2. Tikhomirov VP, Shalygin MG, Izmerov MA. Contact model and evaluation of friction force molecular component. Science Intensive Technologies in Mechanical Engineering. 2023;6:20-27.

3. Grydunov KI, Kozlov AN, Nemchikov ML, Melnikova IS. Diagnostics of aircraft engines by the content of metals in oils. Civil Aviation High Technologies [Internet]. 2019 [cited 2023 Dec 26]:3. Available from: https://cyberleninka.ru/article/n/diagnostirovanie-aviatsionnyh-dvigatelei-po-soderzhaniyu-metallov-v-maslah

4. Sviridenok AI, Myshkin NK, Kalmykova TF, Kholodilov OV. Acoustic and electrical methods in tribotechnics. Minsk: Nauka I Tekhnika; 1987.

5. Poteryansky LI, Poteryansky SL. IStudy of the vibration state of SIMENS V64.3A gas turbine unit at starting modes and under load during pilot operation [Internet]. Available from: http://www.nppmera.ru/assets/files/vibro-expert_example.pdf .

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