气动式绝对压力调节器出口压力异常仿真及试验研究  

Simulation and Experimental Research of Pneumatic Absolute Pressure Regulator Outlet Abnormal Pressure

作　　者：马越崎 陈海胜 封翔宇 MA Yue-qi;CHEN Hai-sheng;FENG Xiang-yu(Design Department,AVIC Xi'an Aircraft Industry Group Co.,Ltd.,Xi'an 710089,China;AVIC Xinxiang Aviation Industry(Group)Co.,Ltd.,Xinxiang 453000,China;North China Electric Power University,School of Control and Computer Engineering,Beijing 102200,China)

机构地区：[1]中航西安飞机工业集团股份有限公司西飞设计院,陕西西安710089 [2]新乡航空工业(集团)有限公司研发中心,河南新乡453000 [3]华北电力大学控制与计算机工程学院,北京102200

出　　处：《液压气动与密封》2024年第5期107-115,共9页Hydraulics Pneumatics & Seals

摘　　要：某气动式绝对压力调节器使用过程中出现产品打不开及出口压力低的故障,基于MATLAB对产品内部二位四通阀进行建模分析,模拟在飞行振动条件下阀体弹簧和阻尼的运动工况并建立动画仿真,结果表明,双弹簧、双阻尼阀体在该振动条件下无法可靠按压活门座,开度增大0.13~0.20 mm,关闭功能丧失,导致反馈腔压力升高,活门出口压力低;Simulink仿真电磁阀模型,得到不同电压下电磁铁吸力和出现干涉动摩擦力差值,结果表明,差值小于3 N,电磁铁通电无动作,产品气路无法打开。通过将双弹簧、双阻尼结构改为单弹簧、单阻尼结构,改进电磁铁磁芯及配合尺寸,并改进动密封的石墨环。通过试验复现故障情况,验证改进措施,为气动式压力调节器设计提供参考。During the use of a certain pneumatic absolute pressure regulator,the product failed to open and the outlet pressure was low.Based on MATLAB,this article modeled and analyzed the two position four way valve inside the product,simulated the movement of the valve body spring and damping under flight vibration conditions,and established an animation simulation.The results showed that the double spring and double damping valve bodies could not reliably press the valve seat under this vibration condition,and the opening increased by 0.13~0.20 mm,resulting in a loss of closing function,Causing an increase in feedback chamber pressure and a low outlet pressure of the valve;Simulink simulates the electromagnetic valve model and obtains the difference between the electromagnetic attraction and the interference dynamic friction force under different voltages.The results show that the difference is less than 3 N,and the electromagnetic iron is energized without action,and the product air circuit cannot be opened;By changing the double spring and double damping structure to a single spring and single damping structure,improving the electromagnetic core and matching size,and improving the graphite ring dynamic seal,the fault situation is reproduced through experiments to verify the improvement measures,providing reference for the design of pneumatic pressure regulators.

关 键 词：MATLAB仿真 气动式压力调节器 弹簧阻尼系统 电磁铁吸力特性 振动 

分 类 号：TH138[机械工程—机械制造及自动化] V223.3[航空宇航科学与技术—飞行器设计]