液压与气动2025，Vol.49Issue(11)：76-87,12.DOI:10.11832/j.issn.1000-4858.2025.11.009
高压输油泵长圆弧槽机械密封端面优化设计及性能分析
Optimization Design and Performance Analysis of Mechanical Seal End Face with Long-arc Groove for High-pressure Oil Delivery Pump
摘要
Abstract
To address the challenges of leakage in the mechanical seal of high-pressure oil delivery pumps and the insufficient opening force of the seal face,a novel long-arc groove seal face is optimally designed,and its sealing performance is analyzed.Firstly,the L25(56)orthogonal experiment is used to perform multi-objective optimization on five structural parameters,including the groove diameter ratio of the designed long-arc groove seal face.Then,based on the construction of a comprehensive scoring model,the optimal operating condition curve is fitted and the optimal parameter combination is obtained.Finally,the optimal parameter combination is verified under different operating conditions,including rotational speed,medium pressure,and liquid film thickness.Numerical tests show that when the groove diameter ratio,groove width ratio,groove depth ratio,arc radius,and groove number are 0.6,0.6,2.5,5 mm,8,respectively,the sealing performance of long-arc groove mechanical seal for the high-pressure delivery pump is optimal.Research shows that under the optimal parameter combination,the maximum stress in the flow field at the outlet of the groove area generally decreases,the overall stress distribution along the circumference is more uniform,and the fluid dynamic pressure effect is more significant,greatly improving the opening force of the end-face liquid film while effectively controlling the leakage rate.关键词
机械密封/长圆弧槽/正交试验/熵权法/最佳工况曲线Key words
mechanical seal/long-arc groove/orthogonal experiment/entropy weight method/optimal operating condition curve分类
机械制造引用本文复制引用
张敏昊,申燚,张建,沈妍,王伟,王佳琪..高压输油泵长圆弧槽机械密封端面优化设计及性能分析[J].液压与气动,2025,49(11):76-87,12.基金项目
江苏省科技厅产学研合作项目(FZ20241174) （FZ20241174）
张家港市产学研预研资金项目(ZKYY2443) （ZKYY2443）
