Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors
In this article, we study the possibility of gas turbine unit (GTU) monitoring using interferometric fiber optic sensors. We used the Mach–Zehnder interferometer (MZI) scheme, which can be easily implemented and simply installed on the turbine, and also allows us to solve the problem of phase unwrap...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/13/4781 |
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| author | Konstantin V. Stepanov Andrey A. Zhirnov Stanislav G. Sazonkin Alexey B. Pnev Alexander N. Bobrov Dmitriy A. Yagodnikov |
| author_facet | Konstantin V. Stepanov Andrey A. Zhirnov Stanislav G. Sazonkin Alexey B. Pnev Alexander N. Bobrov Dmitriy A. Yagodnikov |
| author_sort | Konstantin V. Stepanov |
| collection | DOAJ |
| description | In this article, we study the possibility of gas turbine unit (GTU) monitoring using interferometric fiber optic sensors. We used the Mach–Zehnder interferometer (MZI) scheme, which can be easily implemented and simply installed on the turbine, and also allows us to solve the problem of phase unwrapping conveniently. In this research, the following main steps were carried out: an experimental scheme based on the MZI was assembled, and its sensitive arm was fixed on the GTU under study; data on various operation modes of the GTU was collected; the data were subjected to frequency FFT analysis, based on which the main rotational speeds of the turbine were identified. With FFT analysis, we also demonstrated multiples harmonics, which appear in the case of GTU after operating time, caused by the number of blades. The possibility of GTU monitoring and analysis using a non-invasive compact fiber-optic sensor is demonstrated: spectral analysis is used to detect the rotor speed, as well as the presence or absence of high-order multiple frequencies indicating blade and bearing defects, which are determined by the number of GTU’s blades and rolling bearing used as turbines rotor supports. |
| first_indexed | 2024-03-09T03:55:52Z |
| format | Article |
| id | doaj.art-b05360482e274ef9bc138a8ffb1fab0f |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T03:55:52Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-b05360482e274ef9bc138a8ffb1fab0f2023-12-03T14:22:05ZengMDPI AGSensors1424-82202022-06-012213478110.3390/s22134781Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic SensorsKonstantin V. Stepanov0Andrey A. Zhirnov1Stanislav G. Sazonkin2Alexey B. Pnev3Alexander N. Bobrov4Dmitriy A. Yagodnikov5Bauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, RussiaBauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, RussiaBauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, RussiaBauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, RussiaBauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, RussiaBauman Moscow State Technical University, 2-nd Baumanskaya 5-1, 105005 Moscow, RussiaIn this article, we study the possibility of gas turbine unit (GTU) monitoring using interferometric fiber optic sensors. We used the Mach–Zehnder interferometer (MZI) scheme, which can be easily implemented and simply installed on the turbine, and also allows us to solve the problem of phase unwrapping conveniently. In this research, the following main steps were carried out: an experimental scheme based on the MZI was assembled, and its sensitive arm was fixed on the GTU under study; data on various operation modes of the GTU was collected; the data were subjected to frequency FFT analysis, based on which the main rotational speeds of the turbine were identified. With FFT analysis, we also demonstrated multiples harmonics, which appear in the case of GTU after operating time, caused by the number of blades. The possibility of GTU monitoring and analysis using a non-invasive compact fiber-optic sensor is demonstrated: spectral analysis is used to detect the rotor speed, as well as the presence or absence of high-order multiple frequencies indicating blade and bearing defects, which are determined by the number of GTU’s blades and rolling bearing used as turbines rotor supports.https://www.mdpi.com/1424-8220/22/13/4781Mach–Zehnder interferometerfiber optic sensorgas turbine unitacoustic monitoringnon-invasive monitoring |
| spellingShingle | Konstantin V. Stepanov Andrey A. Zhirnov Stanislav G. Sazonkin Alexey B. Pnev Alexander N. Bobrov Dmitriy A. Yagodnikov Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors Sensors Mach–Zehnder interferometer fiber optic sensor gas turbine unit acoustic monitoring non-invasive monitoring |
| title | Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors |
| title_full | Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors |
| title_fullStr | Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors |
| title_full_unstemmed | Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors |
| title_short | Non-Invasive Acoustic Monitoring of Gas Turbine Units by Fiber Optic Sensors |
| title_sort | non invasive acoustic monitoring of gas turbine units by fiber optic sensors |
| topic | Mach–Zehnder interferometer fiber optic sensor gas turbine unit acoustic monitoring non-invasive monitoring |
| url | https://www.mdpi.com/1424-8220/22/13/4781 |
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