收敛锥面型静压密封流场数值分析  

Numerical Analysis of Flow Field in Hydrostatic Seal with Tapered Face

作　　者：白从强[1] 王和顺[1] 黄泽沛[2] 张车宁 张君凯 

机构地区：[1]西华大学机械工程与自动化学院,四川成都610039 [2]四川日机密封件股份有限公司,四川成都610046

出　　处：《润滑与密封》2010年第12期87-90,共4页Lubrication Engineering

基　　金：四川省教育厅青年基金项目(08202024);四川省教育厅自然科学重点项目(09202032);四川省重点实验室开放基金项目(SZJJ2009-023);国家自然科学基金项目(51005188)

摘　　要：为研究静压式机械密封端面几何形状(收敛面宽度、收敛角度)和工作参数(转速)对密封性能的影响,使用简化的二维模型对收敛锥面型密封端面流场进行数值模拟。计算结果表明:随着收敛面宽度的增加,端面开启力、泄漏量和液膜轴向刚度都相应增加,并在宽度较小的范围内增加趋势较为明显,增大到一定程度后趋于恒定;随着收敛角度的增大,端面开启力和泄漏量同样逐渐增大,并在角度增加到一定程度后趋于不变,而轴向刚度呈现先增大后减小的变化趋势,并在很小的角度范围内变化就很明显,因此为了达到一定的液膜刚度,须控制收敛角在有效尺寸范围内(为0.03°～0.05°);密封面相对转速的变化对密封性能参数影响较小。In order to study the impact of end face geometry （convergent face width and convergent angle） and working parameter （rotary speed） on sealing performance,numerical simulation was carried out on the flow field of tapered face seal with a simplified 2-D model.Results show that as the convergent face width increases,the opening force,leakage and the film axial stiffness all increase obviously when the width is comparatively small and gradually becomes stable after then;as the convergent angle increases,the opening force and leakage also tend to increase and become contant after reaching a certain value,while the axial stiffness tends to increase before it drops which can be observed even when the angle is very small,so the convergent angle must be controlled in an effective range（about 0.03°～0.05°） to achieve necessary film stiffness;rotary speed has little effect on the performance parameters.

关 键 词：机械密封 静压密封 主泵密封 数值模拟 

分 类 号：TH136[机械工程—机械制造及自动化]