Monitoring and experimental validation of blade vibration forces acting on rotor

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43955703" target="_blank" >RIV/49777513:23520/19:43955703 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1784/cm.2019.137" target="_blank" >http://dx.doi.org/10.1784/cm.2019.137</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1784/cm.2019.137" target="_blank" >10.1784/cm.2019.137</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Monitoring and experimental validation of blade vibration forces acting on rotor

Popis výsledku v původním jazyce

Monitoring of blade vibration is an important part in the maintenance of the rotating machine and its proper operation. The signal analysis of blade vibration plays an important role in detection of the blade structure change. Early detection can avoid unnecessary losses. This is important especially for blades in last stages of low-pressure turbine of turbo-generators. The popular method used for blade vibration monitoring is blade tip timing, which is, unfortunately, not installed standardly yet due to the higher installation costs and needs for adjustment of the stator part. However, when there is no blade vibration monitoring system installed on the turbine, there is a possibility to use an alternative method for blade vibration monitoring based on the analysis of the shaft relative vibration. In this case, the signal is measured by standardly installed instrumentation giving this method a major advantage upon the others. Recently, there was published a few papers describing this approach. However, there is no exact explanation yet how blade vibrations affect the shaft vibration and what is the form of its transmission. Explanation of main principle of rotor excitation by rotating blades, specifically description of forces taking part in the blade-shaft vibrations transfer are described in this paper. Experimental validation using a machinery fault simulator and derived conclusions are presented as well.

Název v anglickém jazyce

Monitoring and experimental validation of blade vibration forces acting on rotor

Popis výsledku anglicky

Monitoring of blade vibration is an important part in the maintenance of the rotating machine and its proper operation. The signal analysis of blade vibration plays an important role in detection of the blade structure change. Early detection can avoid unnecessary losses. This is important especially for blades in last stages of low-pressure turbine of turbo-generators. The popular method used for blade vibration monitoring is blade tip timing, which is, unfortunately, not installed standardly yet due to the higher installation costs and needs for adjustment of the stator part. However, when there is no blade vibration monitoring system installed on the turbine, there is a possibility to use an alternative method for blade vibration monitoring based on the analysis of the shaft relative vibration. In this case, the signal is measured by standardly installed instrumentation giving this method a major advantage upon the others. Recently, there was published a few papers describing this approach. However, there is no exact explanation yet how blade vibrations affect the shaft vibration and what is the form of its transmission. Explanation of main principle of rotor excitation by rotating blades, specifically description of forces taking part in the blade-shaft vibrations transfer are described in this paper. Experimental validation using a machinery fault simulator and derived conclusions are presented as well.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20205 - Automation and control systems

Projekt

<a href="/cs/project/LO1506" target="_blank" >LO1506: Podpora udržitelnosti centra NTIS - Nové technologie pro informační společnost</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 CM 2019

ISBN

978-1-5108-8977-4

ISSN

2632-637X

e-ISSN

—

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

The British Institute of NDT

Místo vydání

Northampton

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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