风机用集成式机液伺服阀芯配合间隙的流场分析  

Analysis of clearance flow field of integrated mechanical-hydraulicservo spool valve for fan

作　　者：贾永帅 苏东海[1] JIA Yong-shuai;SU Dong-hai(College of Mechanical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学机械工程学院,辽宁沈阳110870

出　　处：《机电工程》2020年第9期1099-1103,共5页Journal of Mechanical & Electrical Engineering

基　　金：辽宁省教育厅科学技术研究项目(LQGD2017029);辽宁省高等学校优秀科技人才支持计划项目(LR2012004)。

摘　　要：针对机液伺服阀芯卡紧与泄漏量大的问题,对风机用机液伺服阀芯处的配合间隙流场进行了分析。在阀芯为倒锥的情况下,分别研究了以角速度1500 r/min高速旋转伺服阀的阀芯与阀套间的偏心量、阀芯的锥度等参数,对阀芯处的配合间隙流场的影响;采用仿真软件分析了不同阀芯偏心量与锥度阀芯配合间隙流场的变化情况,通过利用高速旋转集成式机液伺服液压缸动态性能仿真,对比分析了机液伺服阀芯配合间隙流场的特性,得出了集成式机液伺服阀芯偏心量与锥度的允许范围。研究结果表明:为了保证伺服阀的动态性能,确保系统具有良好的稳定性,机液伺服阀芯的偏心量不得超过0.01 mm,机液伺服阀芯倒锥的半径差不得大于0.015 mm;该结果可为机液伺服液压缸的结构优化分析奠定基础。Aiming at the problem of clamping and large leakage of the mechanical-hydraulic servo spool valve,the flow field of the fit clearance at the mechanical-hydraulic servo spool valve of the fan was analyzed.When the spool valve was pour tapered,the effects of eccentricity between the spool valve and the sleeve,the taper of the spool valve and of the servo valve rotating at a high speed of 1500 r/min on the flow field in the spool valve clearance were studied respectively.The simulation software was used to analyze the flow field changes of the clearance between different spool valve eccentricity and taper of the spool valve,the dynamic performance of the high-speed rotating integrated mechanical-hydraulic servo-hydraulic cylinder was simulated and compared to analyze the characteristics of the fluid field of the mechanical-hydraulic servo spool valve with the gap,the allowable range of eccentricity and taper of the integrated mechanical-hydraulic servo spool valve was obtained.The results indicate that in order to ensure the dynamic performance of the servo valve and ensure the system has good stability,the eccentricity of the mechanical-hydraulic servo spool valve should not exceed 0.01 mm,the radius difference of pour tapered of the mechanical-hydraulic servo spool valve should not exceed 0.015 mm.The results can lay a foundation for the structural optimization analysis of the mechanical-hydraulic servo hydraulic cylinder.

关 键 词：机液伺服阀芯 配合间隙 流场分析 径向力 泄漏量 

分 类 号：TH44[机械工程—机械制造及自动化] TH137.51