On possibilities of using relative shaft vibration signals for rotating blades monitoring

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F18%3A43951797" target="_blank" >RIV/49777513:23520/18:43951797 - isvavai.cz</a>

Result on the web

<a href="http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2701503" target="_blank" >http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2701503</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/GT2018-76565" target="_blank" >10.1115/GT2018-76565</a>

Result language

angličtina

Original language name

On possibilities of using relative shaft vibration signals for rotating blades monitoring

Original language description

Ensuring the reliability of the steam turbine is the key for its long life. For this purpose monitoring systems are standardly used. Early detection of any failure can avoid possible economical and material losses. A monitoring of rotating blades vibration belongs to the very important tasks of the turbomachinery state assessment. Especially in terms of the last stages of low-pressure part, where the longest blades are vibrating at most. Commonly used methods for blade vibration monitoring are based on contact measurement using strain gauges or non-contact approach based on blade tip timing measurement. Rising demand for low-cost monitoring systems has initiated development of a new approach in blade vibration monitoring task. The presented approach is based on usage of relative rotor vibration signals. Its advantage is in using of standardly installed sensors making this approach economically interesting for the turbine operators compared to the traditionally used methods, mentioned above. This paper summarizes the symptoms of blade vibration phenomenon in relative shaft vibration signals, the impact of operating conditions on the blade vibration amplitude and its comparison to blade tip-timing measurement results. In addition of several examples, the article also describes an evaluation of proposed method in operation of steam turbine with power of 170MW.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20205 - Automation and control systems

Project

<a href="/en/project/LO1506" target="_blank" >LO1506: Sustainability support of the centre NTIS - New Technologies for the Information Society</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Article name in the collection

2018 Proceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition (GT2018)

ISBN

978-0-7918-5117-3

ISSN

—

e-ISSN

—

Number of pages

10

Pages from-to

1-10

Publisher name

American Society of Mechanical Engineers (ASME)

Place of publication

New York

Event location

Oslo, Norway

Event date

Jun 11, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000457071200055