流体机械2024，Vol.52Issue(9)：57-65,9.DOI:10.3969/j.issn.1005-0329.2024.09.008
引流-泵送槽液体润滑端面密封性能研究
Study on the sealing performance of liquid lubricated end face seal of inlet-return groove
摘要
Abstract
In order to further probe into the influence rules of different combined groove configurations on the comprehensive performance of the mechanical seal,the quasi-three-dimensional thermal-hydrodynamic-lubricated model of the inlet-return groove liquid-face-lubricated seal was established considering mass conservation and energy conservation.Under the premise of validating accuracy of the model,the SUPG finite element method was applied to iteratively coupled solution of the pressure and temperature of liquid film,and the end face temperature of the sealing ring so as to analyze seal face state and the influence rules of sealing performance parameters.Through the analysis of the end face field,the mechanisms of the"hydrodynamic pumping pressurization"of the inlet-groove and the"cavitation dragging reflux"of the return-groove were revealed.Under operating conditions of ps=1 MPa,n=3 000 r/min,and h0=1.5 μm,the dynamic load-bearing,lubrication and heat dissipation capacity of the seal face are effectively optimized,and the face leakage is effectively suppressed,by increasing the circumferential length of the inlet-groove,enlarging the returning-radial-position ratio,adjusting inlet-diameter-depth ratio to 0.52～0.60 and the ratio of circumferential length and radial width of return-groove to(13.5～14.5)/(1～2),and setting the depth of inlet-groove to 4～6 μm and the depth of return-groove to 2～3 μm.The research results can provide a reference for the design of this type of seal.关键词
引流槽/泵送槽/端面密封/动力润滑/泄漏量Key words
inlet-groove/return-groove/end face seals/hydrodynamic lubrication,leakage分类
机械制造引用本文复制引用
彭骞,丛国辉,李鲲,张翊勋,郑国运,沈宗沼..引流-泵送槽液体润滑端面密封性能研究[J].流体机械,2024,52(9):57-65,9.基金项目
安徽省重点研究与开发计划项目(2022a05020002) （2022a05020002）
