中国机械工程2025，Vol.36Issue(11)：2544-2553,10.DOI:10.3969/j.issn.1004-132X.2025.11.009
多孔介质动静压机械密封动力学特性研究
Study on Dynamics Characteristics of Porous Matrix Hydrodynamic and Hydrostatic Mechanical Seals
摘要
Abstract
A porous hydrodynamic and hydrostatic mechanical seal was proposed by combining the po-rous material and L grooves(PL-MS).A dynamic mathematical model of the seal was developed based on the perturbation method,by considering the mass transfer between the fluids in porous matrix and the lubri-cation films between seal rings,as well as the film cavitation.The perturbed equations were solved with the finite element method and the dynamic coefficients of the porous hydrodynamic and hydrostatic mechani-cal seal were numerically analyzed.The results show that the PL-MS generates greater film stiffness coeffi-cients Kzz,Kαα,Kββ than those of the ordinary porous mechanical seals and partial distributed porous mechani-cal seals due to the synergism of the hydrostatic effect of porous matrix and hydrodynamic effect of L grooves.It is a good way to increase the film stiffness coefficients Kzz,Kαα,Kββ by increasing the porous per-meability and optimizing the L groove geometrical parameters at the sacrifice of the stiffness coefficients Kαβ,Kβα and damp coefficients dzz,dαα,dββ.关键词
动态系数/多孔介质/L形槽/渗透率/摄动法Key words
dynamic coefficient/porous matrix/L-groove/permeability/perturbation method分类
机械制造引用本文复制引用
韩丽云,李学萍,孟祥铠,梁杨杨,张力豪,彭旭东..多孔介质动静压机械密封动力学特性研究[J].中国机械工程,2025,36(11):2544-2553,10.基金项目
国家自然科学基金(52175193) （52175193）
国家自然科学基金重点项目-叶企孙科学基金(U2241246) （U2241246）
