尹源,刘向锋,丛国辉,胡松涛,黄伟峰,李双喜,王磊
YIN Yuan,LIU Xiang-feng,CONG Guo-hui,HU Song-tao,HUANG Wei-feng,LI Shuang-xi,WANG Lei

• 1:清华大学摩擦学国家重点实验室
• 2:深圳中广核工程设计有限公司
• 3:北京化工大学

摘要(Abstract)：

外加压静压气体密封在启停等低速运转状态下具有良好的性能,并且便于通过调节气源进行干预。密封在运行过程中会受到非浮动环的窜动和偏摆的影响,故需要良好的追随性以维持密封稳定有效工作。本文采用小扰动法分别计算了采用整周和分区均压槽的外加压静压气体密封的动特性系数,然后进一步计算追随性,并进行了对比。结果表明,采用不同均压槽形式的密封在轴向上的性质差别不大,但相比于采用整周均压槽,采用分区均压槽的静压气体密封具有显著更高的角向直接动刚度、更好的对非浮动环偏摆的追随性。
Externally pressurized hydrostatic gas seal show good performance with low speed. Additionally,it can be easily adjusted by controlling gas source pressure. A good tracing ability keeps a seal away from malfunctioning when affected by misalignment and axial runout of non-floating ring. A perturbation method is applied to calculate dynamic coefficients of seal with integral and divided equalizing groove(s),and then tracing performance is calculated. The comparison of results between seal employing integral and divided equalizing groove(s) shows that although there is no obvious difference in axial properties,seal with divided equalizing grooves works with significantly higher angular direct dynamic stiffness and traces misalignment of non-floating ring better.

关键词(KeyWords)： 外加压静压气体密封;小扰动法;追随性
externally pressurized hydrostatic gas seal;perturbation method;tracing ability

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究计划项目(2012CB026003);; 国家科技重大专项课题(ZX06901);; 国家科技支撑计划课题(2015BAA08B02)

作者(Author): 尹源,刘向锋,丛国辉,胡松涛,黄伟峰,李双喜,王磊
YIN Yuan,LIU Xiang-feng,CONG Guo-hui,HU Song-tao,HUANG Wei-feng,LI Shuang-xi,WANG Lei

参考文献(References)：

• [1]黄莉,彭旭东,白少先,等.不同型槽端面干气密封的性能对比研究[J].流体机械,2010,38(8):14-17.
• [2]马媛媛,彭旭东,白少先,等.双向旋转树型槽密封端面气膜动压特性[J].流体机械,2012,40(1):13-16.
• [3]黄伟峰,高志,黎安伟,等.基于Reynolds方程和基于N-S方程的干气密封性能分析对比[J].清华大学学报(自然科学版),2010(11):1820-1824.
• [4]HU Songtao,HUANG Weifeng,LIU Xiangfeng,et al.Influence Analysis of Secondary O-ring Seals in Dynamic Behavior of Spiral Groove Gas Face Seals[J].Chinese Journal of Mechanical Engineering,2016(3):507-514.
• [5]Stolarski T A,Xue Y.Performance study of a backdepression mechanical dry gas seal[C].Proceedings of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,1998,212:279-290.
• [6]刘飞.静压干气密封研究[D].成都:西华大学,2010.
• [7]A.J.Heilala,Kangasniemi.Adjustment and control of a mechanical seal against dry running and severe wear[C].Proceedings of the 11th International Conference on Fluid Sealing,1987:548-575.
• [8]朱亮,李双喜,张秋翔,等.主动调控型密封调控试验研究[J].流体机械,2012,40(7):1-6.
• [9]刘暾,刘育华,陈世杰.静压气体润滑[M].哈尔滨:哈尔滨工业大学出版社,1990.
• [10]Fujiwara S,Fuse T.Advanced aerostatic dry gas seal[C].16th International Conference on Fluid sealing,BHR Group 2000 Fluid Sealing,2000:483-499.
• [11]李双喜,张树强,蔡纪宁,等.动静压混合式气体密封的特性分析[J].摩擦学学报,2011(5):457-466.
• [12]金朝旭,李双喜,蔡纪宁,等.可调控型气膜润滑密封静压结构参数优化[J].化工学报,2015(4):1425-1433.
• [13]Zirkelback N,Andres L S.Effect of Frequency Excitation on Force Coefficients of Spiral Groove Gas Seals[J].Journal of Tribology,1998,121:853-863.
• [14]王楠,盛颂恩,白少先,等.气体多孔端面机械密封孔径尺寸对密封动态性能影响研究[J].流体机械,2009,37(10):14-18.
• [15]张树强.动静压混合式气体密封追随性及主动调控振动特性数值分析[J].航空学报,2012,33(7):1336-1346.
• [16]刘雨川.端面气膜密封特性研究[D].北京:北京航空航天大学,1999.
• [17]许恒杰.静压气体润滑机械密封性能分析[J].润滑与密封,2014,38(8):41-45.