| 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。 |
| 关键词: 船用低速机；电液控制阀；失效形式 泄漏 |
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| Research on Reliability Numerical Simulation of Electro-HydraulicControl Valves in Marine Low Speed Engine Hydraulic Systems |
| 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 |
| Abstract: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. |
| Key words: marine low-speed engine electro-hydraulic control valve failure mode leakage |
