Contactless Diagnostics of Blade Vibration of Low-Pressure Steam Turbine Stages

被引：0

作者：

Prochazka, P. ^{[1
]}

Vanek, F. ^{[1
]}

机构：

[1] Inst Thermomech AS CR, Vvi, Dept Dynam & Vibrat, Prague 18200 8, Czech Republic

来源：

PROCEEDINGS OF ISMA2010 - INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING INCLUDING USD2010 | 2010年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页码：2921 / 2935

页数：15