摘要
针对煤矿水液压支架安全阀的严重气蚀问题,建立了阀腔CFD多相流模型,研究了阀腔流场的压力与气相分布特性,分析了阀芯结构参数(阀口排数、阀口个数、孔间距、孔径)对重要阀口过流截面气蚀特性的影响规律,并优化了阀腔结构参数。研究表明:当阀芯为两排阀口、阀口数为16个、孔径为1. 4mm、孔间距为8mm时,最大气相体积分数降低了19. 4%,对气蚀的产生有抑制作用。
Aiming at the serious cavitation of mine water hydraulic support safety valve,a CFD multi-phase flow model of valve chamber is established.The pressure and gas phase distribution characteristics of valve chamber flow field are studied.The influence of valve chamber structure parameters(valve outlet row number,valve outlet number,hole spacing,hole diameter)on the cavitation characteristics of important valve orifice overflow section is analyzed and optimized.The results show that the maximum volume fraction of vapor phase decreases by 19.4%when the spool is two rows of orifices,the number of orifices is16,the diameter of orifices is 1.4 mm and the spacing of orifices is 8 mm,which can inhibit the formation of cavitation erosion.
作者
陈明亮
何涛
陈国瑜
张敬敏
王传礼
CHEN Ming-liang;HE Tao;CHEN Guo-yu;ZHANG Jing-min;WANG Chuan-li(College of Mechanical Engineering,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Fluid Power and Mechatronic Systems,Hangzhou 310027,China;Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment(China University of Mining and Technology),Xuzhou 221116,China)
出处
《煤炭工程》
北大核心
2019年第9期147-151,共5页
Coal Engineering
基金
国家自然科学基金面上项目(51675003)
流体动力与机电系统国家重点实验室开放基金(GZKF-201715)
安徽省高校自然科学研究项目(KJ2018A0078)
江苏省矿山机电装备重点实验室开放基金(JSKF-MMEE-2018-4)
关键词
煤矿水液压
液压支架
安全阀
气蚀特性
结构优化
coal mine water hydraulic pressure
hydraulic support
safety valve
cavitation characteristics
structural optimization
