The Effect of Shafting Oscillations in the Turbo Unit on the Accuracy of Rotation Frequency Measurement

被引：0

作者：

Zile A.Z. ^{[1
]}

Chernomzav I.Z. ^{[2
]}

机构：

[1] JSC “All-Russia Thermal Engineering Institute” (JSC “VTI”), Moscow

[2] LLC “Incontrol”, Moscow

来源：

Power Technology and Engineering | 2022年 / 55卷 / 05期

关键词：

bending oscillations; measurement accuracy; rotation frequency measurements; shafting; torsional oscillations; turbine unit;

D O I：

10.1007/s10749-022-01426-3

中图分类号：

学科分类号：

摘要：

An analysis of the influence produced by torsional and bending oscillations of a shaft assembly on the accuracy of measuring rotation frequency is presented. Based on the obtained data about the level of fluctuations in the frequency measurement cross-section, an assessment was made concerning possible changes in the values of the measured frequency in various operational modes of a turbine unit. The dependences of frequency change on the damping and phase shift of oscillations are obtained. A reduction in the effect of torsional oscillations on the accuracy of frequency measurement can be achieved by selecting the location of frequency measurement in the nodal point zone of natural modes—in particular, in the span between the generator and turbine bearings. © 2022, Springer Science+Business Media, LLC, part of Springer Nature.

引用

页码：742 / 748

页数：6

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