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Contactless Diagnostics of Blade Vibration of Low-Pressure Steam Turbine Stages
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SYSNO ASEP 0347777 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Contactless Diagnostics of Blade Vibration of Low-Pressure Steam Turbine Stages Author(s) Procházka, Pavel (UT-L) RID, ORCID
Vaněk, František (UT-L) RIDSource Title Proceedings of ISMA2010 International Conference on Noise and Vibration Engineering including USD2010. - Leuven : Katholieke Universiteit Leuven - Departement Werktuigkunde Celestijnenlaan 300B - box 2420, B-3001 Heverlee (Belgium), 2010 / Sas P. ; Bergen B. - ISBN 9789073802872 Pages s. 2921-2936 Number of pages 15 s. Publication form CD-ROM - CD-ROM Action ISMA2010 International Conference on Noise and Vibration Engineering including USD2010 Event date 20.09.2010-22.09.2010 VEvent location Leuven Country BE - Belgium Event type WRD Language eng - English Country BE - Belgium Keywords turbine blade ; measurement of vibration ; tip-timing Subject RIV JB - Sensors, Measurment, Regulation CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000302905400217 Annotation The study deals with the contactless vibrodiagnostic system used for the identification of steam turbine blade stress and vibration. The tip-timing method based on the evaluation of time differences of blade passages in different rotor revolutions is described and the results of the development of a new contactless magnetoresistive sensor are presented. A new approach to the identification of blade stress and vibration based on the analysis of the amplitude differences of impulse blade signals is applied. Measurement of blade untwisting and elongation is based on characteristics of magnetoresistive sensors. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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