汽轮发电机组间歇性振动故障分析与处理

摘要

Intermittent vibration fault occurred frequently during operation of turbo-generator unit in a power plant. Sometimes the Vibration reached the trip value. In order to insure the safe and re⁃liable operation of the unit , according to the vibration test and analysis of the unit, the fundamen⁃tal reason is found out. Based on the above, the maintenance and improvement are made, and vibra⁃tion fault is solved completely by retaining and scraping of oil baffle, expanding oil return hole of oil seal and installing the steam baffle plate.%针对某电厂汽轮发电机组在运行过程中，频繁出现间歇性轴系振动大的故障（有时达到跳闸值）问题，为了保障机组的安全稳定运行，通过对机组轴系振动数据的测试和分析，确定了其振动故障的根本原因。据此进行了检修和改良，通过油挡修刮、加大油封回油孔和加装挡汽板等措施，有效解决了机组振动故障。