Advanced method of noncontact measurement of shrouded blade vibration in steam turbine: evaluation of bladed disc mode shape

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43923196" target="_blank" >RIV/49777513:23520/14:43923196 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.europment.org/library/2014/prague/bypaper/SCSI/SCSI-05.pdf" target="_blank" >http://www.europment.org/library/2014/prague/bypaper/SCSI/SCSI-05.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Advanced method of noncontact measurement of shrouded blade vibration in steam turbine: evaluation of bladed disc mode shape

Popis výsledku v původním jazyce

This paper deals with an advanced method for the evaluation of a bladed disc behavior in terms of the wheel vibration and blade service time consumption. This method is developed as a part of the noncontact vibration monitoring system of the steam turbine shrouded blades. The proposed method utilizes the time- frequency processing (cross spectra) to analyse the data from the optical and magnetoresistive sensors, which are mounted in the stator radially above the rotor blades. Fundamentally, the blade vibrations are detected during the blade passages under the sensors and the following signal processing, which covers also the proposed method, leads to the estimation of the blade residual service life. The prototype system implementing above mentioned techniques was installed into the last stage of the new steam turbine (LP part). The method for bladed disc mode shape evaluation was successfully verified on the signals, which were obtained during the commission operation of the turbine.

Název v anglickém jazyce

Advanced method of noncontact measurement of shrouded blade vibration in steam turbine: evaluation of bladed disc mode shape

Popis výsledku anglicky

This paper deals with an advanced method for the evaluation of a bladed disc behavior in terms of the wheel vibration and blade service time consumption. This method is developed as a part of the noncontact vibration monitoring system of the steam turbine shrouded blades. The proposed method utilizes the time- frequency processing (cross spectra) to analyse the data from the optical and magnetoresistive sensors, which are mounted in the stator radially above the rotor blades. Fundamentally, the blade vibrations are detected during the blade passages under the sensors and the following signal processing, which covers also the proposed method, leads to the estimation of the blade residual service life. The prototype system implementing above mentioned techniques was installed into the last stage of the new steam turbine (LP part). The method for bladed disc mode shape evaluation was successfully verified on the signals, which were obtained during the commission operation of the turbine.

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

5

Strana od-do

39-43

Název nakladatele

Europment

Místo vydání

Sofia

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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