摘要
通过对近年来汽轮发电机组油膜失稳事故案例的整理总结,分析了油膜失稳的原因及其振动特征,认为轴承标高不当、对中不良等引起的轴承扰动及轴瓦型式不当是引起油膜失稳的主要原因。对此,提出了提高润滑油温,更换稳定性更高的轴承型式,调整轴瓦顶隙及轴承座标高等处理措施,可进一步提高轴瓦稳定性,减少油膜失稳事故。
Oil-film instability is a common vibration fault in large turbo generator units,will cause significant effect on the safe operation of unit.By investigation on oil-film instability vibration fault cases in domestic turbine generator units in recent years,the vibration features of oil film instability were summarized.The bearing disturbance caused by improper bearing elevation and die misalignment,and the wrong bearing type were considered as the major reasons.Thus,the countermeasures were put forward,which providing technical references for the similar fault in future.
出处
《热力发电》
CAS
北大核心
2013年第4期47-52,共6页
Thermal Power Generation
基金
苏州热工研究院科研开发项目(R-2011SZRD11YM)
关键词
汽轮发电机组
油膜失稳
轴承
标高
对中
振动特征
turbine generator unit
oil film instability
bearing
elevation
alignment
vibration feature
