基于故障树分析的闸门双吊点液压启闭系统故障诊断研究

摘要

运用故障树分析法,以闸门双吊点液压启闭系统故障为顶事件,通过分析系统故障形式、液压系统结构以及组件与系统之间的逻辑关系,建立了液压系统故障树图；通过最小割集和重要度的计算求解对液压系统故障进行定性和定量分析,得出液压元件磨损和阀心卡阻是造成故障发生的主要原因,从而为日常的维护和维修提供指导.%Based on the Fault Tree Analysis (FTA), the fault tree of twin-lift hydraulic hoist system for gate is established by analyzing system failure form, system structure and the logical relationship between the parts and the system and taking the faults as the top event. The qualitative and quantitative analyses are carried out through computing the minimum cut sets and the importance. The results show that the fault is mainly caused by the wear of hydraulic components and the jamming of valve spool. The study can provide guidance to routine maintenance and repair.