转套式配流系统U型减振槽结构及其对流场影响  

Structure of U-shaped Damping Groove Based on Rotating-Sleeve Distributing-flow System and Having Influence on Flow Field

作　　者：张延君[1] 张洪信[1] 赵清海[2] 姜晓天[1] 程前昌 ZHANG Yanjun;ZHANG Hongxin;ZHAO Qinghai;JIANG Xiaotian;CHENG Qianchang(Mechanical and Electronic Engineering College,Qingdao University,Qingdao 266071,China;Power Integration and Energy Storage Systems Engineering Technology Center,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学机电工程学院,山东青岛266071 [2]青岛大学动力集成及储能系统工程技术中心,山东青岛266071

出　　处：《机械制造与自动化》2019年第1期11-14,共4页Machine Building & Automation

基　　金：国家自然科学基金项目(51575286);山东省自然科学基金项目(2014ZRB01503)

摘　　要：减振槽是针对液压系统设计的一种降低冲击的凹槽。针对转套式配流系统的工作特点,在转套结构上设计了一种U型截面减振槽结构。建立工作过程中的配流特性数学模型,分析不同阶段的通流面积,重点研究减振槽在全流场数值模拟中对流量脉动、压力脉动、速度分布的影响,结果表明:U型减振槽结构流场流态为湍流,压力脉动较大,有压力冲击和降低的现象出现,但U型减振槽流场流速小、流向稳定,很大程度上降低了流量脉动,对流场具有良好的稳定作用。U型等截面减振槽结构的整体分析具有重要工程应用价值,为结构优化提供了理论依据。The damping groove is a reduced impact groove designed for the hydraulic system. For the working characteristics of rotating-sleeve distributing-flow system, a novel U-shaped uniform-section damping grooves is proposed. The mathematical modeling of its distribution characteristics is established. Then orifice area is analyzed under different stages. Particularly, this paper mainly researches on the influence of the damping grooves on the flow pulsation, pump chamber pressure and velocity vector in full flow field. The results show that the flow regime of its flow flied is turbulent flow. In addition, the terrible pressure fluctuation, pressure impact and pressure decay appear in it, but little flow velocity and straightforward flow direction are beneficial to flow pulsation and flow flied. The analysis of U-shaped damping grooves is of important engineering application value and the theoretical basis is provided for the structural optimization.

关 键 词：配流系统 转套式 减振槽 结构设计 仿真分析 

分 类 号：TH137.51[机械工程—机械制造及自动化]