Torsional vibration encoder-based monitoring methods and their experimental validation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43955720" target="_blank" >RIV/49777513:23520/19:43955720 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1784/cm.2019.131" target="_blank" >http://dx.doi.org/10.1784/cm.2019.131</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1784/cm.2019.131" target="_blank" >10.1784/cm.2019.131</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Torsional vibration encoder-based monitoring methods and their experimental validation

Popis výsledku v původním jazyce

Excessive torsional vibration of turbine generator rotors and torsionally induced blade vibration result in fatigue cracks arising at the shaft surface or blade roots. If not early detected severe damage to the machine can occur. Torsional vibration, however, is not measurable with standard vibration sensors and thus a specialized measurement must be used. In this paper, two encoder-based measurement methods are discussed. The first method is using an optical sensor together with a reflexive zebra-tape encoder. The second method is using an eddy-current sensor together with a copper incremental encoder. For both methods the measured signal quality and its usability for torsional analysis is compared. Experimental data were obtained on a test rig as well as on a steam turbine generator. Both methods prove to be suitable for obtaining the times of arrival of encoder markers used for instantaneous angular velocity and torsional vibration evaluation. However, the eddy current method suits better for practical applications where dirt and contamination by oil is a concern.

Název v anglickém jazyce

Torsional vibration encoder-based monitoring methods and their experimental validation

Popis výsledku anglicky

Excessive torsional vibration of turbine generator rotors and torsionally induced blade vibration result in fatigue cracks arising at the shaft surface or blade roots. If not early detected severe damage to the machine can occur. Torsional vibration, however, is not measurable with standard vibration sensors and thus a specialized measurement must be used. In this paper, two encoder-based measurement methods are discussed. The first method is using an optical sensor together with a reflexive zebra-tape encoder. The second method is using an eddy-current sensor together with a copper incremental encoder. For both methods the measured signal quality and its usability for torsional analysis is compared. Experimental data were obtained on a test rig as well as on a steam turbine generator. Both methods prove to be suitable for obtaining the times of arrival of encoder markers used for instantaneous angular velocity and torsional vibration evaluation. However, the eddy current method suits better for practical applications where dirt and contamination by oil is a concern.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20205 - Automation and control systems

Projekt

<a href="/cs/project/EF17_048%2F0007267" target="_blank" >EF17_048/0007267: VaV inteligentních komponent pokročilých technologií pro plzeňskou metropolitní oblast</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of The Sixteenth International Conference on Condition Monitoring and Asset Management – CM 2019

ISBN

978-1-5108-8977-4

ISSN

2632-637X

e-ISSN

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Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

The British Institute for Non-Destructive Testing

Místo vydání

Northampton, UK

Místo konání akce

Glasgow, UK

Datum konání akce

25. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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