噪声与振动控制2017，Vol.37Issue(6)：98-101,4.DOI:10.3969/j.issn.1006-1355.2017.06.020
船用汽轮机组振动激励源特性分析
Analysis of Characteristics of Vibration Excitation Sources for a Marine Steam Turbine Set
孙原理 1雷博 2郑辉2
作者信息
- 1. 海军装备研究院,北京 100161
- 2. 高新船舶与深海开发装备协同创新中心,上海 200240
- 折叠
摘要
Abstract
During operation of the marine steam turbine set, excessive vibration can happen, which may lead to fatigue failures of important components. Therefore, fully understanding the characteristics of vibration excitation sources is a prerequisite for the vibration reduction of the marine steam turbine set. In this paper, a simulation study of a typical steam turbine set is performed and the vibration excitation sources are analyzed under various conditions. Firstly, through theoretical analysis and numerical simulation, the rotor-dynamic and aerodynamic vibration excitation sources are obtained. On the basis, the equivalent excitation forces are calculated. Then, the equivalent excitation forces are applied to a finite element model of the steam turbine set which is rigidly connected to the ground. And the vibration responses of the steam turbine set are calculated under different working conditions. Finally, by comparing the vibration responses, the unbalanced forces of rotation are found to be the dominant vibration excitation source. And the relationship between the vibration acceleration and the rotation speed of the turbine is derived by curve's fitting. This work provides a guideline for the vibration reduction of the marine steam turbine sets.关键词
振动与波/汽轮机组/激励源/运行参数/振动响应Key words
vibration and wave/steam turbine set/excitation source/working parameters/vibration response分类
信息技术与安全科学引用本文复制引用
孙原理,雷博,郑辉..船用汽轮机组振动激励源特性分析[J].噪声与振动控制,2017,37(6):98-101,4.
