三角形-椭圆复合微孔织构化机械端面密封性能的数值研究  

Numerical Study on the Sealing Performance Textured with Multi-shape Texture Pattern Combined with Triangular and Elliptical Dimples

作　　者：魏伟[1,2] 陈思 章亦聪 吴玉国 王涛[1,3] 时礼平 Wei Wei;Chen Si;Zhang Yicong;Wu Yuguo;Wang Tao;Shi Liping(School of Mechanical Engineering,Anhui University of Technology,Ma’anshan 243032,China;Department of Scientic Research,Anhui University of Technology,Ma’anshan 243032,China;International Science and Technology Cooperation Base for Intelligent Equipment Manufacturing in Special Service Environment,Ma’anshan 243032,China;Province Key Laboratory of Special Heavy Load Robot,Ma’anshan 243032,China)

机构地区：[1]安徽工业大学机械工程学院,安徽马鞍山243032 [2]安徽工业大学科研处,安徽马鞍山243032 [3]特殊服役环境的智能装备制造国际科技合作基地,安徽马鞍山243032 [4]特种重载机器人安徽省重点实验室,安徽马鞍山243032

出　　处：《流体机械》2020年第8期25-31,共7页Fluid Machinery

基　　金：安徽高校自然科学研究重点项目(KJ2019A0078,KJ2019A0057);安徽高校优秀青年人才项目(gxyq2019018);江苏省精密与微细制造技术重点实验室开放基金项目;特种重载机器人安徽省重点实验室开放基金项目(TZJQR003-2020)。

摘　　要：通过构建三角形-椭圆复合微孔机械端面密封的几何模型;利用数值模拟的方法计算出三角形、椭圆及三角形-椭圆复合微孔织构化密封端面流场的压力分布;系统考察结构参数织构深度hp、织构面积率Sp、三角形、椭圆微孔偏转角度α,β;工况参数密封间隙h0、动环旋转速度n等对密封端面性能参数的影响。结果表明:当hp=4~5μm,三种织构化端面的承载力F、流体膜刚度K均能获得最大值、且泄漏量Q可以控制在较低水平;当h0<4μm时,三角形-椭圆复合织构化端面的承载力F、泄漏量Q、流体膜刚度K均优于其他2种单一微孔织构化端面;当α=15°、β=10°~20°时,三角形-椭圆复合微孔织构化密封端面具有最佳的综合密封性能。A geometric model of mechanical face seal textured with multi-shape pattern combined with triangular and elliptical dimples was constructed.The pressure distribution for triangular dimple,elliptical dimple and the multi-shape surface texture can be obtained by numerical simulation.The effect of structural parameters(e.g.texture depth,hp,texture area ratio,Sp,the deflection angle of triangular dimples,αand elliptical dimples,β)and operational parameters(e.g.seal clearance,h0,rotating speed,n of rotating ring)on the performance of mechanical seal face were analyzed,including texture depth,hp,seal clearance,h0,texture area ratio,Sp,rotating speed,n of rotating ring,the deflection angle of triangular dimples,αand elliptical dimples,β.The results show that when surface texture depth,hp=4-5μm,the maximum value of the load carrying force F and the film stiffness K and a lower leakage rate Q can be obtained.When the seal clearance,h0<4μm,sealing performance parameters including load carrying force,F,leakage rate,Q and film stiffness,K of the multi-shape texture pattern are better than the other two single dimple patterns.Whenα=15°、β=10°-20°,this new multi-shape surface texture pattern has preferable seal performance.

关 键 词：复合织构 密封性能 动压润滑 机械端面 

分 类 号：TH117.2[机械工程—机械设计及理论]