汽轮机轴承温度异常升高分析及对策

Analysis and Countermeasures of Abnormal Temperature Rise of Turbine Bearing

国内某大型炼化一体化项目蜡油加氢装置的循环氢压缩机汽轮机在运行中出现了轴承温度升高等状况,排除了检测系统本身问题,通过对轴系仪表、压缩机负荷、润滑油、转子以及汽轮机进汽参数等的排查分析,并对照同项目其它压缩机的拆检情况,确定汽轮机轴承温度升高的主要原因是轴承自身结构缺陷。通过调整润滑油系统的运行,升级润滑油品质,有效降低轴承温度,并提出检修方案,保障了压缩机组、蜡油加氢处理装置的安全平稳运行。

The problem of the bearing temperature rise of the circulating hydrogen compressor steam turbine in the wax oil hydrogenation unit of a large-scale refinery/petrochemical integrated project in China was studied.The reasons were analyzed from multiple perspectives,and the problems of the detection system itself were eliminated.Through the investigation and analysis of the shaft instrument,the compressor load,the lubricating oil,the rotor and the steam turbine inlet parameters,and the disassembly and inspection of other compressors in the same project,it was determined that the main reason for the bearing temperature rise of the steam turbine was the structural defects of the bearing itself.By adjusting the operation of the lubricating oil system,the quality of the lubricating oil is upgraded,and the bearing temperature is effectively reduced.The maintenance scheme was proposed to ensure the safe and stable operation of the compressor unit and the wax oil hydrogenation unit.