激光加工多孔端面气体密封的临界静压开启特性  

Critical Opening Characteristics of a Laser Surface Texture Hydrostatic Gas Mechanical Seal

作　　者：彭旭东[1,2] 梁世克[1] 白少先[1,2] 孟祥铠[1,2] 盛颂恩[1,2] 

机构地区：[1]浙江工业大学机械工程学院,浙江杭州310032 [2]浙江工业大学过程装备及其再制造教育部工程研究中心,浙江杭州310032

出　　处：《润滑与密封》2010年第3期1-4,33,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(50775206;50805130);浙江省杰出青年人才基金资助项目(R1090833);浙江省高校中青年学科带头人资助项目(G0701102008610)

摘　　要：研究激光加工多孔端面干式气体密封的临界静压开启特性。建立控制端面气膜压力的Reynolds方程;在静压开启条件下,分析机械密封端面从接触到非接触的临界开启密封性能,研究周向开孔比、径向开孔比、深径比、面积密度等微孔几何参数对临界开启力以及气膜刚度的影响规律。结果表明:面积密度在0.5～0.6内取值,深径比在0.004～0.006范围内取值,周向开孔比和径向开孔比均取0.7时,密封可获得最佳静压临界开启特性。The critical hydrostatic opening characteristics of a gas lubricated laser surface textured mechanical seal was numerically analyzed,which is defined as the transition from contacting to non-contacting of the two faces at zero speed.The dimensionless Reynolds equation governing gas film pressure distribution between the two faces was put forward and was solved by Finite Element Method.Opening force and gas film stiffness were obtained when the sealing faces were critically opened.The effect of dimple geometrical parameters on the sealing performance was analyzed.The results show that the most excellent sealing performance in critical condition is obtained when textured area density is between 0.5 and 0.6,ratio of dimple depth to dimple diameter is between 0.004 and 0.006,and radial texturing proportion and circumferential texturing proportion are 0.7.

关 键 词：表面织构 机械密封 气体静压密封 开启特性 

分 类 号：TH117.2[机械工程—机械设计及理论]