A novel method for localization of rotor-stator rub in steam turbines

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43922074" target="_blank" >RIV/49777513:23520/14:43922074 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
A novel method for localization of rotor-stator rub in steam turbines
Original language description
The rotor-stator rub has become a pretty common phenomenon in terms of steam turbines operation in last couple of years. The reason is that clearances in flow paths of the turbines get smaller and smaller along efforts towards efficiency increase. This paper introduces a novel method based on vibration signal processing to localize rotor-stator rub in rotating machinery. The presented method utilizes the standard sensor installation in several measurement planes of the steam turbine. To investigate the behavior of the rub induced signals a Rayleigh-Lamb description of the stress waves propagation is discussed. This paper covers not only the introduction of procedures for rub signal pre-processing but also the method of automatic wave arrival time determination. The proposed localization method was tested during experiments on rotor stand and also in operation of steam turbine. Finally the accuracy of localization results was verified after an inspection of the steam turbine during the outage.
Czech name
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Czech description
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Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Computers, Automatic Control, Signal Processing and System Science
ISBN
978-1-61804-233-0
ISSN
1790-5117
e-ISSN
neuvedeno
Number of pages
8
Pages from-to
91-98
Publisher name
Europment
Place of publication
Sophia, Bulgaria
Event location
Praha
Event date
Apr 2, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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