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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20205 - Automation and control systems

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Computers, Automatic Control, Signal Processing and System Science

ISBN

978-1-61804-233-0

ISSN

1790-5117

e-ISSN

neuvedeno

Počet stran výsledku

8

Strana od-do

91-98

Název nakladatele

Europment

Místo vydání

Sophia, Bulgaria

Místo konání akce

Praha

Datum konání akce

2. 4. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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