船用低速机液压系统电液控制阀可靠性数值模拟研究  

Research on Reliability Numerical Simulation of Electro-HydraulicControl Valves in Marine Low Speed Engine Hydraulic Systems

作　　者：贺玉海[1,2,3] 丁鹏 张波伦 He Yuhai;Ding Peng;Zhang Bolun(School of Energy and Power Engineering,Wuhan University of Technology,Hubei Wuhan 430063;MOT Key Laboratory of Marine Power Engineering and Technology,Wuhan University of Technology,Hubei Wuhan 430063;National Engineering Laboratory of Ship and Marine Engineering Power Systems,Wuhan University of Technology,Hubei Wuhan 430063)

机构地区：[1]武汉理工大学能源与动力工程学院,湖北武汉430063 [2]武汉理工大学船舶动力工程技术交通行业重点实验室,湖北武汉430063 [3]武汉理工大学船舶与海洋工程动力系统国家工程实验室,湖北武汉430063

出　　处：《柴油机》2020年第5期14-20,共7页Diesel Engine

基　　金：船用低速机工程(一期)(工信部联装函【2017】21号)。

摘　　要：针对船用低速机电液控制阀的可靠性问题,以自主研制的电液控制阀为研究对象,对前期性能试验反映出的问题进行总结,并通过FMECA方法逆推了造成电液控制阀失效的原因,以此为指导搭建了电液控制阀物理失效模型。在此模型基础上推导了电液控制阀泄漏失效模型,并通过可靠性试验验证了模型的准确性。基于此模型开展了电液控制阀的健康状态评估以及性能预测。研究结果表明:电液控制阀的主要失效形式为泄漏;阀芯累积变形量与碰撞次数之间成对数关系;泄漏模型计算值与实际试验值的误差在合理范围内。To solve the reliability problems of electro-hydraulic control valves of marine low-speed engines,the self-developed electro-hydraulic control valve was taken as the research object,the problems from previous performance tests were summarized,and the failure reasons of electro-hydraulic control valve were deduced by FMECA(Failure Mode,Effects and Criticality Analysis)method.According to the research,the physical failure model of electro-hydraulic control valve was established.Based on the model,the leakage failure model of electro-hydraulic control valve was deduced,and then the accuracy of the model was verified by reliability test.Based on the verified model,the health assessment and performance prediction of the electro-hydraulic control valve were carried out.The results show that the main failure mode of electro-hydraulic control valve is leakage,and there is logarithmic relationship between cumulative deformation of valve core and collision times.The error between leakage model simulation value and actual test value is acceptable.

关 键 词：船用低速机 电液控制阀 失效形式 泄漏 

分 类 号：TK423.8+4[动力工程及工程热物理—动力机械及工程]