螺旋槽机械密封环在热-力耦合下的变形特性分析  

Analysis of Deformation Characteristics of Spiral Groove Mechanical Seal Ring under Thermal Mechanical Coupling

作　　者：马高峰 王宇飞 高宗华 杨玺庆 MA Gao-feng;WANG Yu-fei;GAO Zong-hua;YANG Xi-qing(College of Mechanical Engineering,Lanzhou Petrochemical University of Vocational Technology,Lanzhou 730060,China)

机构地区：[1]兰州石化职业技术大学机械工程学院,甘肃兰州730060 [2]兰州石化职业技术大学人事处,甘肃兰州730060

出　　处：《兰州石化职业技术学院学报》2021年第4期1-4,共4页Journal of Lanzhou Petrochemical Polytechnic

基　　金：2021年度甘肃省自然科学基金(21JR7RA775)。

摘　　要：为研究机械密封环的变形情况,在Workbench平台联立热场和结构场来分析密封环在混合摩擦热和液膜环境热、惯性离心力和液膜平衡力以及两者热-力耦合效应下随转速变化的变形规律。研究表明:热作用产生膨胀凸变形,力作用产生压缩凹变形,且密封环在热作用下的轴向变形最大,热-力耦合次之,力作用最小,其中热变形为主导;动环轴向最大变形在螺旋槽内,静环轴向最大变形在端面中径处;动环在三种载荷下的轴向变形均大于静环。转速增大,动环在热作用、热-力耦合作用、力作用下的轴向变形均依次增大;静环在热作用、热-力耦合作用下的轴向变形逐级增大,力作用变形基本保持不变。In order to study the deformation of mechanical seal ring,the deformation law of seal ring with rotating speed under mixed friction heat,liquid film ambient heat,inertial centrifugal force,liquid film equilibrium force and their thermal mechanical coupling effect is analyzed by combining thermal field and structural field on Workbench platform.The results show that the thermal action produces expansion convex deformation,and the force action produces compression concave deformation.The axial deformation of the sealing ring under the thermal action is the largest,the thermal mechanical coupling is the second,and the force action is the smallest,in which the thermal deformation is the dominant;The maximum axial deformation of the moving ring is in the spiral groove,and the maximum axial deformation of the stationary ring is at the mid diameter of the end face;The axial deformation of the moving ring under the three loads is greater than that of the stationary ring.When the rotating speed increases,the axial deformation of the moving ring under thermal action,thermal mechanical coupling action and force increases in turn;the axial deformation of the stationary ring under thermal action and thermal force coupling increases step by step,and the force deformation remains basically unchanged.

关 键 词：机械密封 混合摩擦热 液膜平衡力 热-力耦合 

分 类 号：TH136[机械工程—机械制造及自动化]