FMECA技术在舰船装备RMS一体化设计中的应用

摘要

Utilizing automatic flow characteristics of seawater when ship is navigating ahead and achieves a certain speed, steam turbine circulating pump can be shut off for saving energy. Based on calculation results of thermodynamics, steam distribution and hydrodynamics characteristics of circulating pump, simulation model of control system for seawater circulating pump was built with AMESim software. The comparison between steady condition simulation and test data shows that the relative error is less than 3.4%, and simulation analysis of dynamic process of seawater circulating pump under automatic flow was carried out based on the model. The results could provide some valuable references for operation, maintenance support and testbed development of seawater circulating pump, and upgrading of control system.%为充分发挥FMECA(故障模式、影响及危害性分析)的作用,使其既能为装备设计、改进提供有效的建议,又能为装备RCMA(以可靠性为中心的维修分析)、MTA(维修工作分析)提供输入信息,对传统的FMECA方法进行改进,增加维修方式的分析,利用RPN(风险优先数)方法的计算结果给出初步的补偿措施,实现对FMECA结果的重复利用.在应用案例中量化了故障发生度和危害度的评分标准,并引入EAGLE软件作为开展FMECA工作的平台,以便工程人员操作.工程实践表明,该方法推动了FMECA技术的深入应用,为实现舰船装备RMS一体化设计奠定了基础.