摘要
该文主要研究液压油中的污染物颗粒对液压节流阀的冲蚀破坏。该文基于Fluent DPM多相流模型探讨了油液流动方向、进口流速、颗粒物(等效)直径、颗粒物形状因子对液压节流锥阀的冲蚀破坏影响。研究结果表明:正向流动冲蚀破坏主要发生在阀芯密封面,造成“麻点”破坏;反向流动主要发生在阀芯根部,造成“环状”破坏;在颗粒物等效直径为0.5 mm、形状因子从0.1变化到1的过程中,冲蚀破坏先增大后减小,形状因子φ为0.6时,破坏效果最明显;当形状因子φ≤0.6,冲蚀效果随颗粒等效直径的增大而增大,当颗粒形状因子φ>0.6,冲蚀效果随颗粒等效直径先增大后减小。
This paper mainly studies the erosion damage of hydraulic throttle by pollutant particles in hydraulic oil.Based on the Fluent DPM multiphase flow model,this paper discusses the influence of oil flow direction,inlet velocity,particle(equivalent)diameter,and particle shape factor on the erosion damage of hydraulic throttle poppet valve.The research results show that:the forward flow erosion damage mainly occurs on the valve core sealing surface,causing“pitting”damage;the reverse flow mainly occurs at the valve core root,causing“ring”damage;the equivalent diameter of particles is 0.5 mm,When the shape factor changes from 0.1 to 1,the erosion damage first increases and then decreases.When the shape factorφis 0.6,the damage effect is the most obvious;when the shape factorφ≤0.6,the erosion effect increases with the equivalent diameter of the particle When the particle shape factorφ>0.6,the erosion effect first increases and then decreases with the particle equivalent diameter.
作者
李森林
杨胜清
王素燕
林博
LI Sen-lin;YANG Sheng-qing;WANG Su-yan;LIN Bo(Guangxi Liugong Machinery Co.,Ltd.,Liuzhou 545007,China;College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《液压气动与密封》
2022年第1期30-36,共7页
Hydraulics Pneumatics & Seals
基金
广西柳州市科技攻关与新产品试制(2020GABC0401)。
关键词
液压节流阀
冲蚀
形状因子
污染颗粒
hydraulic throttle valve
erosion
shape factor
pollution particles
