基于部件危害度的自航水雷贮存可靠性分析

Analysis of Self-Propelled Mine Storage Reliability Based on Component Criticality Method

为了研究自航水雷贮存可靠性,根据自航水雷功能原理,建立以部件级故障为底事件的系统故障树。在此基础上,根据自航水雷战备转进检测数据,运用改进的故障模式影响及危害度分析(FMECA)方法,分析并计算各部件故障的危害度,从而确定主要影响自航水雷长期贮存可靠性的关键部件。供电及信息控制器故障危害度最大,其次是密封圈失效、控制系统组件故障、动力电池组故障等,爆炸螺栓火工品件危害度最小。针对如何降低危害度向设计厂家和技术保障部门提出优化建议,提出了提高关键部件的固有可靠性和增加关键部件的保险措施,并给出了关键部件检测频次方案。

In order to research the self-propelled mine reliability,according to its principle of function,the system fault tree which bottom events based on component-level failure mode was established.on this basis,according to the information of self-propelled mine operational readiness switch,each failure mode criticality was analyzed and computed by using modified FMECA method,thus several key components that mainly affect the storage reliability were found.Finally,the optimization suggestions were put forward to design manufacturers and technical support departments on how to reduce the criticality of key components.Power supply and information controller fault is the most harmful,followed by seal ring failure,control system component failure,power battery failure,and the explosive bolt initiating explosive device component is the least harmful;Aiming at how to reduce the harm degree,the measures to improve the inherent reliability of the key components and increase the safety of the key components were put forward.The frequency scheme of key components detection was also given.