Non-contact systems for monitoring blade vibrations of steam turbines

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F12%3A00383029" target="_blank" >RIV/61388998:_____/12:00383029 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Non-contact systems for monitoring blade vibrations of steam turbines
Original language description
The study deals with systems and methods used for the identification of blade stress, vibration and damage in low-power stages of steam turbines. The tip-timing method based on the evaluation of time differences of blade passages in different rotor revolutions has been modified and improved to provide more precise and reliable results. A new approach to the analysis of the amplitude and time differences of impulse signals generated by a blade passage has been applied. Principles of non-contact sensors of blade passages based on measuring deflections or velocity components are described and compared, including up-to-date magneto-resistive sensors. Selection of a sensor type is focused on a demanded accuracy of the blade position measurements with respect to the used method.
Czech name
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Czech description
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Project
<a href="/en/project/TA02020728" target="_blank" >TA02020728: Research and development of methods and appliances for contactless identification of turbine blade state</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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