流体动压密封设计

Design of fluid dynamic pressure sealing

基于有限元Matlab软件平台对流体动压密封进行了计算机数值仿真分析与计算,研究了流体动压密封动环对数螺旋槽半径和螺旋角与流体动压密封开启力和泄漏量之间的关系,得出了流体动压密封设计准则;通过激光打标工艺试验得出了激光打标刻蚀对数螺旋槽的工艺规范,采用该工艺规范加工出的对数螺旋槽动环满足设计要求。流体动压密封介质运转试验结果表明:流体动压密封有限元Matlab计算机数值仿真分析与计算是合理的,流体动压密封设计和工艺规范是正确和有效的。

Based on the finite element Matlab software platform, the numerical simulation anal- ysis and calculation of fluid dynamic pressure seal were carried out with computer, and the relation- ship of the fluid dynamic pressure sealing ring logarithmic spiral groove radius and spiral angle with the fluid dynamic pressure sealing opening force and leakage rate were studied. The design criterion of the hydrodynamic pressure seal was obtained. The process specification of laser marking etching loga- rithmic spiral groove was got in the laser marking process experiments. The logarithmic spiral groove moving ring made with this technology specification can meet the design requirements. The running test results of fluid dynamic pressure sealing medium show that the dynamic pressure sealing finite element numerical simulation analysis and calculation of Matlab computer are reasonable, and the design and process specification of the fluid dynamic pressure seal are correct and effective.