舌簧阀升程限制器线型设计方法

Design Method for Reed Valve Lift Limiter Linetype

为了对升程限制器的线型设计方法进行系统分析,对比了悬臂梁法、振动力学法和有限元法3种理论线型设计方法。为了保证理论线型的精度,同时又便于实际加工,对比分析了直线型和单曲率直线型升程限制器理论线型拟合方法。实验结果表明:单曲率直线拟合的有限元法升程限制器理论线型既能保证理论线型的精度,又能有效减小应力集中,提高阀片使用寿命。

For the purpose of systematically analyzing the linetype design method for the reed valve＇ s lift lim- iter, the beam method, vibration mechanics method and finite element method were analyzed and compared, including the theoretical linetype fitting method for the linear-typed lift limiter and the single curvature straight line-typed lift limiter to ensure theoretical linetype＇ s precision and to benefit its machining process. The ex- perimental results show that the theoretical linetype of FEM-based lift limiters which featuring single-curvature straight-line fitting can ensure linetype＇ s precision and reduce stress concentration as well as improve valve disc＇ s servicing life.