Identification of dynamic behavior of steam turbine blades using rotor vibration measurement

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F21%3A43961763" target="_blank" >RIV/49777513:23520/21:43961763 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.29008/ETC2021-616" target="_blank" >https://doi.org/10.29008/ETC2021-616</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.29008/ETC2021-616" target="_blank" >10.29008/ETC2021-616</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Identification of dynamic behavior of steam turbine blades using rotor vibration measurement

Popis výsledku v původním jazyce

Ensuring the reliability of the steam turbine is fundamental task for a proper operation. Monitoring systems are traditionally used for this purpose. Early detection of initial mechanical change can avoid time and financial losses. The last stage blades of low-pressure turbine can be considered as the critical part in a steam turbine operation. The interaction between steam flow and the blisk causes the mechanical stress acting on the blades. Traditional methods used for monitoring blade dynamic behaviour are contact method represented by strain gauges measurement and non-contact method – blade tip timing. However the installation and operation of such monitoring systems is quite expensive. Rising demand for low-cost monitoring systems led into developing new approach which is presented in this paper. It is based on the use of the standard measurement – relative rotor vibration signal. Using the standard measurement makes this approach potentially interesting for the turbine operators compared to the methods traditionally used. This paper illustrates how this principle can be used in blade state monitoring and early identification of the mechanical change in blade structure. The experimental results measured on an experimental rotor test rig are also presented in the paper to support presented approach.

Název v anglickém jazyce

Identification of dynamic behavior of steam turbine blades using rotor vibration measurement

Popis výsledku anglicky

Ensuring the reliability of the steam turbine is fundamental task for a proper operation. Monitoring systems are traditionally used for this purpose. Early detection of initial mechanical change can avoid time and financial losses. The last stage blades of low-pressure turbine can be considered as the critical part in a steam turbine operation. The interaction between steam flow and the blisk causes the mechanical stress acting on the blades. Traditional methods used for monitoring blade dynamic behaviour are contact method represented by strain gauges measurement and non-contact method – blade tip timing. However the installation and operation of such monitoring systems is quite expensive. Rising demand for low-cost monitoring systems led into developing new approach which is presented in this paper. It is based on the use of the standard measurement – relative rotor vibration signal. Using the standard measurement makes this approach potentially interesting for the turbine operators compared to the methods traditionally used. This paper illustrates how this principle can be used in blade state monitoring and early identification of the mechanical change in blade structure. The experimental results measured on an experimental rotor test rig are also presented in the paper to support presented approach.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20205 - Automation and control systems

Projekt

<a href="/cs/project/EF16_026%2F0008389" target="_blank" >EF16_026/0008389: Výzkumná spolupráce pro dosažení vyšší účinnosti a spolehlivosti lopatkových strojů</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 14th European Conference on Turbomachinery Fluid dynamics &amp; Thermodynamics

ISBN

—

ISSN

2313-0067

e-ISSN

2410-4833

Počet stran výsledku

9

Strana od-do

1-9

Název nakladatele

The European Turbomachinery Society

Místo vydání

Itálie

Místo konání akce

Gdaňsk, virtual

Datum konání akce

12. 4. 2021

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—