摘要
为了解决传统液压阀块体积笨重、制造工艺繁琐且效率损失大的问题,使用3D打印和流体拓扑优化相结合的方法对液压流道进行优化设计。以入口和出口处压差最小为目标,通过流体拓扑优化对常见的液压阀体T形通道进行优化,得到更加符合流体特性的流道,并设计了可以无支撑进行3D打印的圆角正方形截面形状,进行了3D打印试验,优化后的流道3D打印成形效果较好。利用Fluent进行流体仿真,结果显示,当入口流速在2~5 m/s时,优化后的流道有效避免了气穴的形成,最大压力减小了40%以上,入口和出口处压差减小了28%以上,湍流改善了85%以上,流体性能得到显著提升。
To solve the traditional hydraulic valve block bulky,cumbersome manufacturing process,and large efficiency loss,a method combining 3 D printing and fluid topology optimization was used to redesign the hydraulic flow channel.The minimum pressure difference between inlet and outlet was regarded as the objective function.The T shaped channel of hydraulic valve body was optimized by fluid topology optimization,and obtained a flow channel which is more consistent with the fluid characteristics.A rounded square section shape with rounded corners that can be 3 D printed without support was designed.3 D printing experiment was carried out,the optimized channel formed good by 3 D printing.Finally,Fluent is used for fluid simulation.It is found that when the inlet flow velocity is within 2~5 m/s,the optimized channel can effectively avoid the formation of cavitation,the maximum pressure is reduced by more than 40%,the pressure difference between the inlet and outlet is reduced by more than 28%,turbulence is improved by more than 85%,fluid performance is significantly improved.
作者
官杰
张文群
GUAN Jie;ZHANG Wen-qun(Power Engineering Department,Naval University of Engineering,Wuhan,Hubei 430033)
出处
《液压与气动》
北大核心
2022年第8期148-154,共7页
Chinese Hydraulics & Pneumatics
基金
海军“双重建设”计划资助项目(4142Z3)
海军工程大学自主研发基金(2022502240)。
关键词
液压阀块
流道
拓扑优化
3D打印
hydraulic valve block
flow channel
topology optimization
3D printing