不同锥角的直动式溢流阀稳态液动力分析  

Steady-State Flow Force Analysis of the Direct Relief Valve Under Different Cone Angles

作　　者：蔡超英[1] 林添良[1] 缪骋 任好玲[1] 

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《华侨大学学报（自然科学版）》2016年第2期129-133,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(51205140);福建省自然科学基金资助项目(2015J01206);高校产学合作科技重大项目(2013H6015);华侨大学中青年教师科研提升计划(ZQN-YX201)

摘　　要：为了降低稳态液动力对比例溢流阀性能的影响,分析了阀座带锥角和阀芯带锥角两种比例溢流阀的基本结构方案,利用PRO/E建立两种结构下不同锥角的流道模型.通过计算流体动力学（CFD）流场仿真软件对不同阀座与阀芯锥角的锥阀口流场进行数值模拟,分析不同锥角阀口的压力流场分布.对不同结构、不同锥角情况下的稳态液动力进行分析,结果表明：阀座带锥角比阀芯带锥角的结构稳态液动力减小了35%~60%;当阀座半锥角为32.5°,阀芯半锥角为30°时,稳态液动力最小.In order to reduce the impact of the steady-state flow force on the performance of proportional relief valve,two kinds of basic structures which the seat and the spool with cone angle are analyzed.PRO/E is utilized to build the channel model of these two structures under different cone angles.Computational fluid dynamics（CFD）flow field simulation software is employed to simulate the flow field under different seats and spools cone angles and the pressure flow field distribution of the valves under different cone angles is analyzed.The steady-state flow force of different structures and different cone angles are compared.The results show that the steady-state flow force is reduced by 35%-60% when the seat with cone angle compared with the spool with cone angle.And the minimum steady-state flow forces are obtained when the half cone angle of the seat is 32.5°and that of the spool is 30°.

关 键 词：比例溢流阀 稳态液动力 滑锥阀 流场仿真 

分 类 号：TP137[自动化与计算机技术—控制理论与控制工程]