基于增材制造的液压阀块流道过渡区优化研究  

Optimization of Flow Channel Transition Area in Hydraulic Valve Block Based on Additive Manufacturing

作　　者：李莹 张玉莹[1] 柳宝磊 张晋 隋佳鑫[1] LI Ying;ZHANG Yu-ying;LIU Bao-lei;ZHANG Jin;SUI Jia-xin(School of Mechanical Engineering,Yanshan University,Qinhuangdao,Hebei 066004;State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou,Zhejiang 310027)

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]浙江大学流体动力与机电系统国家重点实验室,浙江杭州310027

出　　处：《液压与气动》2021年第1期56-66,共11页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金重大项目(51890881);流体动力与机电系统国家重点实验室开放基金项目(GZKF-201911);秦皇岛科技计划(201902A021)。

摘　　要：器件小型化和集成化发展趋势,对液压阀块设计提出了更高的要求。传统工艺加工阀块体内部流道,不但工艺复杂难加工,而且成形的流道流动特性有待提高。新型制造工艺增材制造一体化成形的特点使其在流道加工方面表现出很大的优越性。基于增材制造,对某一液压集成阀块的流道过渡区进行优化设计,利用Fluent仿真,对直线过渡、圆弧过渡、B样条曲线3种过渡方式连接的流道流动特性进行分析,B样条曲线过渡流道较直线过渡流道压力损失可降低55%以上,不同圆角半径的圆弧过渡流道较直线过渡流道压力损失可降低28%~56%,为基于增材制造的流道设计提供了必要的支持。The development trend of miniaturization and integration puts higher requirements for the design of the hydraulic valve block.It is difficult and complicated to process the internal flow channel of the valve block with traditional technology.And the flow characteristics need to be improved.The new manufacturing process,additive manufacturing shows great advantages to inflow channel processing.Based on additive manufacturing the transition region of the flow channel is optimized design.Simulation was carried out by Fluent to analyze the characteristics of the flow channel connected by three methods:A linear transition,a circular transition,and a B-spline curve.It is found that the pressure loss of the B-spline curve transitional flow reduces more than 55%compared with the straight line transitional flow channel.The circular arc transitional flow channel is reduced by 28%~56%differently.The results provide a theoretical basis for the necessity of flow channel design based on additive manufacturing.

关 键 词：B样条理论 流道设计 增材制造 液压阀块 压力损失 

分 类 号：TH137[机械工程—机械制造及自动化] V260[航空宇航科学与技术—航空宇航制造工程]