双级溢流阀先导阀供油流道布局分析  

Structure Analysis of the Pilot Supply Channel in Relief Valve

作　　者：訚耀保[1] 张晓琪[1] 刘洪宇 

机构地区：[1]同济大学机械与能源工程学院,上海201804 [2]上海航天控制技术研究所,上海200233

出　　处：《液压气动与密封》2014年第2期27-30,共4页Hydraulics Pneumatics & Seals

基　　金：国家科技支撑计划资助项目(2011BAJ02B06);国家自然科学基金资助项目(51175378);航空科学基金资助项目(20120738001)

摘　　要：为适应重大装备双级溢流阀的压力稳定性要求,采用带平衡活塞结构的溢流阀作为先导阀,实现减振稳压的效果,其先导阀必须通过斜长孔从阀芯侧面供油,这种侧向通油流道极易导致偏心、阻塞或卡死现象,加大了结构设计的难度。为此,该文采用CFD流体计算仿真方法,分析不同的流道布局对阀性能的影响,取得了先导阀供油流道的孔数、孔径和位置等优化参数。As for pressure control valves used in aircrafts which requires a quite high stability,the two-stage relief valve with a pressure sensing chamber would be an excellent choice to achieve the stability requirements.However,for this kind of relive valves,the structures used to connect the chambers of the main and pilot valve would be quite difficult to design.This article use CFD fluid simulation to analyze different kinds of structures to find out its influence on the performance of the valves so as to optimize its structure parameter.

关 键 词：双级溢流阀 先导阀供油流道 流场仿真 结构布局 

分 类 号：TH137.52[机械工程—机械制造及自动化]