Turbine Blades State Monitoring based on Advanced Order Analysis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F16%3A43929707" target="_blank" >RIV/49777513:23520/16:43929707 - isvavai.cz</a>
Result on the web
<a href="https://www.scopus.com/record/display.uri?origin=resultslist&eid=2-s2.0-85002718838" target="_blank" >https://www.scopus.com/record/display.uri?origin=resultslist&eid=2-s2.0-85002718838</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Turbine Blades State Monitoring based on Advanced Order Analysis
Original language description
One of the most important parts of a steam turbine is a rotating blade and its proper construction and operation. It is key turbine component that provides the conversion of heat energy into rotational motion and that is why it is necessary to monitor blade vibrations, analyze the measured signals and diagnose the state of the blades. It is important especially in terms of the last stages of low-pressure turbine part, where are the longest blades which are forced to vibrate at most. This paper describes the new developed time-frequency method for monitoring of blade vibrations using relative rotor vibration sensors and the keyphasor, which are standardly installed and measure the machine state during operation. This method is based on order analysis, but in this case the order is not related to engine order, but to natural frequencies of the blade. It permits to have the natural blade frequency representation independent on rotational frequency. Advanced order analysis can also help us to refine the Campbell diagram of the blades normally evaluated by FEM, because the calculated natural frequencies ordinarily slightly differ from the real values during machine operation.
Czech name
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Czech description
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Project
<a href="/en/project/TG02010011" target="_blank" >TG02010011: Promoting commercial opportunities of UWB</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
The Thirteenth International Conference on Condition Monitoring and Machinery Failure Prevention Technologies CM2016 / MFPT2016
ISBN
978-1-5108-3093-6
ISSN
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e-ISSN
neuvedeno
Number of pages
11
Pages from-to
1-11
Publisher name
The British Institute of Non-Destructive Testing
Place of publication
Northampton
Event location
Paris, France
Event date
Oct 10, 2016
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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