Turbine Blades State Monitoring based on Advanced Order Analysis

Kód výsledku v 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>

Výsledek na webu

<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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Jazyk výsledku

angličtina

Název v původním jazyce

Turbine Blades State Monitoring based on Advanced Order Analysis

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Turbine Blades State Monitoring based on Advanced Order Analysis

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20205 - Automation and control systems

Projekt

<a href="/cs/project/TG02010011" target="_blank" >TG02010011: Podpora komerčních příležitostí ZČU</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

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

Počet stran výsledku

11

Strana od-do

1-11

Název nakladatele

The British Institute of Non-Destructive Testing

Místo vydání

Northampton

Místo konání akce

Paris, France

Datum konání akce

10. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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