液压滑阀配合间隙含颗粒油液的泄漏特性研究  

Flow Characteristics of Oil with Polluted Particles in Fit Clearance of Hydraulic Spool Valve

作　　者：郑长松[1,2] 娄伟鹏 范家辉 李慧珠 张周立 杜秋 

机构地区：[1]北京理工大学车辆传动国家重点实验室,北京100081 [2]北京电动车辆协同创新中心,北京100081 [3]上海汽车变速器有限公司,上海201807

出　　处：《液压与气动》2017年第9期42-47,共6页Chinese Hydraulics & Pneumatics

基　　金：国家自然基金(51475044);国防科工局基础产品科研创新项目(VTDP-3503)

摘　　要：针对大功率变速箱液压滑阀在污染环境下的配合间隙泄漏现象,设计搭建了间隙泄漏量的试验台,对滑阀进行了漏油特性试验研究,并通过颗粒计数器分析了流经间隙的污染颗粒尺寸的分布规律。综合考虑了配合间隙大小以及污染油浓度等影响因素,建立了不同配合间隙下的滑阀二维模型,并利用Fluent仿真软件对滑阀内部颗粒分布与间隙泄漏进行数值仿真研究,数值模拟结果与试验数据较吻合。研究结果对液压滑阀的抗污染设计具有工程指导意义。Aiming at the clearance leakage phenomenon of a buffer shift spool valve used in the integrated transmission , we establish a test system to research the characteristics of the leakage oil by experiments. The regularity of size distribution of the contaminative particle size flowing through the interval is analyzed by the liquid particle counting device. Furthermore, the two-dimensional geometric model of different clearances is set up. The effects of the clearance size, the particle diameter, the density and the concentration of the polluted oil are considered in the model. The distribution of the internal particle of the slide valve and the clearance leakage are numerically simula- ted by the software Fluent. The numerical simulation result is accordant with the experimental data.

关 键 词：滑阀 Fluent仿真 颗粒分布 间隙泄漏量 

分 类 号：TH137.52[机械工程—机械制造及自动化]