考虑空化效应的逻辑阀压力损失分析及试验验证OA北大核心
Analysis and Experimental Verification of Pressure Loss in Logic Valves Considering Cavitation Effect
为了减小液控逻辑阀的压力损失,提高油液的流动效率,基于CFD建立了阀内部的流体动力学模型,考虑流体空化的影响,分析液压油的流动特性、阀的流量-压力特性,并进行试验验证,探究不同阀口结构参数对压力损失的影响.结果表明:当进口流量大于 60 L/min后,是否考虑空化的仿真与试验的误差分别为4.16％和22.41％;在锐边处采用圆滑过渡、增大阀套孔直径、减小阀芯直径能有效降低逻辑的压力损失,可为逻辑阀优化设计提供参考.
In order to reduce the pressure loss of hydraulic control logic valve,improve the flow efficiency of the oil,a simulation model of the flow field in the logic valve is established based on CFD,and considering the influence of fluid cavitation.The flow characteristics of the hydraulic oil and the flow-pressure characteristics of the valve are analyzed,and the test is carried out.Finally,the influence of different structural parameters of valve port on the pressure loss is explored.The results show that when the inlet flow rate is greater than 60 L/min,the simulation results and test errors of whether to consider cavitation are 4.16％and 22.41％,respectively.The pressure loss can be reduced by using a smooth transition at the sharp edge,increasing the valve sleeve aperture and reducing the diameter of the valving element,which can provide reference for the optimal design of the logic valve.
向禹豪;胡桂荣;陈川;司国雷;吴泽华;杨丹
四川航天烽火伺服控制技术有限公司,四川 成都 611130四川航天烽火伺服控制技术有限公司,四川 成都 611130四川航天烽火伺服控制技术有限公司,四川 成都 611130四川航天烽火伺服控制技术有限公司,四川 成都 611130四川航天烽火伺服控制技术有限公司,四川 成都 611130四川航天烽火伺服控制技术有限公司,四川 成都 611130
机械工程
逻辑阀计算流体力学空化压力损失试验验证
logic valveCFDcavitationpressure lossexperimental verification
《液压与气动》 2025 (2)
8-16,9
国家重点研发计划(2022YFC2805703)
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