An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig

When it comes to measuring blade-tip clearance or blade-tip timing in turbines, reflective intensity-modulated optical fiber sensors overcome several traditional limitations of capacitive, inductive or discharging probe sensors. This paper presents the signals and results corresponding to the third...

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Autores: García Esteban-Barcina, Iker, Beloki Perurena, Josu, Zubia Zaballa, Joseba Andoni, Aldabaldetreku Etxeberria, Gotzon, Illarramendi Leturia, María Asunción, Jiménez Hernández, Felipe
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/11291
Acceso en línea:http://hdl.handle.net/10810/11291
Access Level:acceso abierto
Palabra clave:optical fiber bundle
real operating conditions measurement
tip clearance
tip timing
turbine
BIOCHEMISTRY AND MOLECULAR BIOLOGY
PHYSICS, ATOMIC, MOLECULAR AND CHEMICAL
ELECTRICAL AND ELECTRONIC ENGINEERING
CHEMISTRY, ANALYTICAL
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spelling An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine RigGarcía Esteban-Barcina, IkerBeloki Perurena, JosuZubia Zaballa, Joseba AndoniAldabaldetreku Etxeberria, GotzonIllarramendi Leturia, María AsunciónJiménez Hernández, Felipeoptical fiber bundlereal operating conditions measurementtip clearancetip timingturbineBIOCHEMISTRY AND MOLECULAR BIOLOGYPHYSICS, ATOMIC, MOLECULAR AND CHEMICALELECTRICAL AND ELECTRONIC ENGINEERINGCHEMISTRY, ANALYTICALWhen it comes to measuring blade-tip clearance or blade-tip timing in turbines, reflective intensity-modulated optical fiber sensors overcome several traditional limitations of capacitive, inductive or discharging probe sensors. This paper presents the signals and results corresponding to the third stage of a multistage turbine rig, obtained from a transonic wind-tunnel test. The probe is based on a trifurcated bundle of optical fibers that is mounted on the turbine casing. To eliminate the influence of light source intensity variations and blade surface reflectivity, the sensing principle is based on the quotient of the voltages obtained from the two receiving bundle legs. A discrepancy lower than 3% with respect to a commercial sensor was observed in tip clearance measurements. Regarding tip timing measurements, the travel wave spectrum was obtained, which provides the average vibration amplitude for all blades at a particular nodal diameter. With this approach, both blade-tip timing and tip clearance measurements can be carried out simultaneously. The results obtained on the test turbine rig demonstrate the suitability and reliability of the type of sensor used, and suggest the possibility of performing these measurements in real turbines under real working conditions.This work has been sponsored by the institutions Ministerio de Economia y Competitividad under projects TEC2009-14718-C03-01, TEC2012-37983-C03-01, Gobierno Vasco/Eusko Jaurlaritza under projects AIRHEM-II, S-PE12CA001, IT664-13 and by the University of the Basque Country (UPV/EHU) through program UFI11/16.MDPI201420142013info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/11291reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MICINN/TEC2009-14718-C03-01/info:eu-repo/grantAgreement/MINECO/TEC2012-37983-C03-01/http://www.mdpi.com/1424-8220/13/6/7385info:eu-repo/semantics/openAccess© 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).oai:addi.ehu.eus:10810/112912026-06-18T09:23:17Z
dc.title.none.fl_str_mv An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
title An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
spellingShingle An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
García Esteban-Barcina, Iker
optical fiber bundle
real operating conditions measurement
tip clearance
tip timing
turbine
BIOCHEMISTRY AND MOLECULAR BIOLOGY
PHYSICS, ATOMIC, MOLECULAR AND CHEMICAL
ELECTRICAL AND ELECTRONIC ENGINEERING
CHEMISTRY, ANALYTICAL
title_short An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
title_full An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
title_fullStr An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
title_full_unstemmed An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
title_sort An Optical Fiber Bundle Sensor for Tip Clearance and Tip Timing Measurements in a Turbine Rig
dc.creator.none.fl_str_mv García Esteban-Barcina, Iker
Beloki Perurena, Josu
Zubia Zaballa, Joseba Andoni
Aldabaldetreku Etxeberria, Gotzon
Illarramendi Leturia, María Asunción
Jiménez Hernández, Felipe
author García Esteban-Barcina, Iker
author_facet García Esteban-Barcina, Iker
Beloki Perurena, Josu
Zubia Zaballa, Joseba Andoni
Aldabaldetreku Etxeberria, Gotzon
Illarramendi Leturia, María Asunción
Jiménez Hernández, Felipe
author_role author
author2 Beloki Perurena, Josu
Zubia Zaballa, Joseba Andoni
Aldabaldetreku Etxeberria, Gotzon
Illarramendi Leturia, María Asunción
Jiménez Hernández, Felipe
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv optical fiber bundle
real operating conditions measurement
tip clearance
tip timing
turbine
BIOCHEMISTRY AND MOLECULAR BIOLOGY
PHYSICS, ATOMIC, MOLECULAR AND CHEMICAL
ELECTRICAL AND ELECTRONIC ENGINEERING
CHEMISTRY, ANALYTICAL
topic optical fiber bundle
real operating conditions measurement
tip clearance
tip timing
turbine
BIOCHEMISTRY AND MOLECULAR BIOLOGY
PHYSICS, ATOMIC, MOLECULAR AND CHEMICAL
ELECTRICAL AND ELECTRONIC ENGINEERING
CHEMISTRY, ANALYTICAL
description When it comes to measuring blade-tip clearance or blade-tip timing in turbines, reflective intensity-modulated optical fiber sensors overcome several traditional limitations of capacitive, inductive or discharging probe sensors. This paper presents the signals and results corresponding to the third stage of a multistage turbine rig, obtained from a transonic wind-tunnel test. The probe is based on a trifurcated bundle of optical fibers that is mounted on the turbine casing. To eliminate the influence of light source intensity variations and blade surface reflectivity, the sensing principle is based on the quotient of the voltages obtained from the two receiving bundle legs. A discrepancy lower than 3% with respect to a commercial sensor was observed in tip clearance measurements. Regarding tip timing measurements, the travel wave spectrum was obtained, which provides the average vibration amplitude for all blades at a particular nodal diameter. With this approach, both blade-tip timing and tip clearance measurements can be carried out simultaneously. The results obtained on the test turbine rig demonstrate the suitability and reliability of the type of sensor used, and suggest the possibility of performing these measurements in real turbines under real working conditions.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/11291
url http://hdl.handle.net/10810/11291
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN/TEC2009-14718-C03-01/
info:eu-repo/grantAgreement/MINECO/TEC2012-37983-C03-01/
http://www.mdpi.com/1424-8220/13/6/7385
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300724

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