Usage of shaft vibration signals for turbine blades monitoring

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F19%3A43956456" target="_blank" >RIV/49777513:23520/19:43956456 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1784/cm.2019.128" target="_blank" >http://dx.doi.org/10.1784/cm.2019.128</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1784/cm.2019.128" target="_blank" >10.1784/cm.2019.128</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Usage of shaft vibration signals for turbine blades monitoring

Popis výsledku v původním jazyce

Electricity production is increasingly influenced by renewable energy sources. It raises demands for increased flexibility of conventional coal-fired power stations. Turbine operation under other than designed operational conditions may lead to increased vibrations of rotating blades, mainly of last stage blades (L0) of low pressure turbines (LP). Excessive, unmonitored, blades vibration may lead to origination of cracks and, in the worst cases, to blades rupture. Safety, reliability and efficiency of turbines is conditioned by online monitoring of blades vibration, but online monitoring systems are still not standardized in LP turbines. The previous research showed that relative shaft vibration signals contain components related to blade vibration modes, but except 0ND (nodal diameter) bladed disc modes. However, the latest results confirmed possibility of monitoring 0ND modes by addition of relative shaft axial shift signals into the measurement chain. The results of detailed comparison of blades vibration analyzed by BTT system and signal processing of shaft vibrations and axial shift are described in this paper.

Název v anglickém jazyce

Usage of shaft vibration signals for turbine blades monitoring

Popis výsledku anglicky

Electricity production is increasingly influenced by renewable energy sources. It raises demands for increased flexibility of conventional coal-fired power stations. Turbine operation under other than designed operational conditions may lead to increased vibrations of rotating blades, mainly of last stage blades (L0) of low pressure turbines (LP). Excessive, unmonitored, blades vibration may lead to origination of cracks and, in the worst cases, to blades rupture. Safety, reliability and efficiency of turbines is conditioned by online monitoring of blades vibration, but online monitoring systems are still not standardized in LP turbines. The previous research showed that relative shaft vibration signals contain components related to blade vibration modes, but except 0ND (nodal diameter) bladed disc modes. However, the latest results confirmed possibility of monitoring 0ND modes by addition of relative shaft axial shift signals into the measurement chain. The results of detailed comparison of blades vibration analyzed by BTT system and signal processing of shaft vibrations and axial shift are described in this paper.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20205 - Automation and control systems

Projekt

<a href="/cs/project/EF17_048%2F0007267" target="_blank" >EF17_048/0007267: VaV inteligentních komponent pokročilých technologií pro plzeňskou metropolitní oblast</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<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

9

Strana od-do

1-9

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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