备用柴油发电机组连杆螺栓断裂故障分析
Internal Combustion Engine & Parts(2021)
Abstract
某电厂备用柴油发电机组在定期试验运行过程中发生了缸体破裂和连杆损坏事件,对柴油机缸套及部分部件造成了损坏.事件发生后,业主、采购方、制造方一起对柴油发电机组事故现象和损坏部件进行了排查和失效分析.从失效部件的观测中得出连杆螺栓是首先断裂部件,分析得出螺母松退是连杆螺栓断裂等一系列故障的根本原因,而螺母结合面的微动磨损是螺母松退的先兆和反映.
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