航空燃油控制系统滑阀内颗粒运移特性研究  

Research on the Transport Characteristics of Particles in the Spool Valve of Aviation Fuel Control System

作　　者：刘宇昊 冀宏[1,2] 陈乾鹏 柴文伟 罗畅敏 潘鹤 LIU Yuhao;JI Hong;CHEN Qianpeng;CHAI Wenwei;LUO Changmin;PAN He(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou Gansu 730050,China;Key Laboratory of Special Pumps,Valves and Flow Control Systems,Ministry of Education,Lanzhou University of Technology,Lanzhou Gansu 730050,China;AECC Guizhou Honglin Aviation Power Control Technology Co.,Ltd.,Guiyang Guizhou 550000,China;Chinese Representative Office of Unit 93147 of the People′s Liberation Army,Guiyang Guizhou 550000,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]兰州理工大学特种泵阀及流控系统教育部重点实验室,甘肃兰州730050 [3]中国航发贵州红林航空动力控制科技有限公司,贵州贵阳550000 [4]中国人民解放军93147部队某军代表室,贵州贵阳550000

出　　处：《机床与液压》2025年第4期121-127,共7页Machine Tool & Hydraulics

基　　金：甘肃省教育厅高校科研创新平台重大培育项目(2024CXPT-09);中国航发贵州红林航空动力控制科技有限公司项目(HX2022B50400003)。

摘　　要：颗粒污染会导致阀芯卡滞,从而影响燃油系统的可靠性。为了研究航空燃油控制系统中颗粒侵入滑阀间隙的机制,基于CFD方法建立颗粒在阀腔内运移的仿真模型,模拟颗粒在阀腔内的运移过程与颗粒侵入间隙的过程;设计滑阀二维模型的可视化试验,使用高速摄像技术拍摄颗粒在阀腔中的运移过程以及停机一段时间后颗粒沉积的情况。结果表明:颗粒在阀腔内残留率为21.7%,侵入出口间隙和入口间隙的侵入率分别为4.2%和1.3%,侵入出口间隙的颗粒数量多于侵入入口间隙的,当间隙尺寸较长时,颗粒更容易滞留在间隙内。Particle contamination can cause the valve core to stick,affecting the reliability of the fuel system.In order to study the mechanism of particle invading into the spool valve gap in the aviation fuel control system,a simulation model of particle migration in the valve cavity was established based on CFD method,and the particle migration process in the valve cavity and the process of particle invading into the gap were obtained.The visualization test of the 2D model of the spool valve was designed.The high-speed camera technology was used to capture the migration process of particles in the valve cavity and the deposition of particles after a period of shutdown.The results show that the residual rate of particles in the valve cavity is 21.7%,the invading rate into the outlet gap and the inlet gap is 4.2%and 1.3%,separately.The number of particles invading the outlet gap is more than the particles invading the inlet gap.When the gap size is longer,particles are more likely to be trapped in gaps.

关 键 词：滑阀 颗粒运移特性 数值模拟 可视化试验 

分 类 号：TH137.52[机械工程—机械制造及自动化]