Use of Conversion Equations of Influence Coefficients on Two-Plane Balancing

• 作者: John J.Yu Nicolas Péton
• 来源期刊: 风机技术
• 年，卷（期）: 2022,（2）
• 所属期刊栏目: Structural Mechanics Analysis
• 页码范围: 62-67
• 页数: 6页
• 语种: 中文
• DOI: 10.16492/j.fjjs.2022.02.0009

摘要

Typical rotors such as those on steam turbine or generator are often supported by two bearings with two balance planes at both ends. Vibrations are monitored by a pair of proximity probes at each bearing. There are two approaches to reduce 1X vibration due to unbalance at both ends via balancing with influence coefficient method. The first approach is to treat it as a multiple-plane balancing problem involving 2x2 matrix of complex influence coefficients. The second approach is to treat it as two single-plane balance problems using static (in-phase) and couple (180 degree out-of-phase) components, respectively. Conversion equations of influence coefficients between these two approaches have been found previously by the author. The corresponding spreadsheets that convert influence coefficients between these two formats are presented in the current paper. The paper shows effectiveness of these conversion equations in dealing with real balancing problems in the field. A detailed balance case is presented to demonstrate how the conversion equations are used to reduce vibration effectively.