多锥角收敛间隙流体静压密封的数值分析.pdf

2010年10月 润滑与密封 Oct．2010 LUBRICATION V01．35No．10 第35卷第10期 ENGINEERING DOI：10．3969／j．issn．0254—0150．2010．10．020 多锥角收敛间隙流体静压密封的数值分析 莫力根蔡纪宁 张秋翔李双喜 (北京化工大学 北京100029) 京 摘要：根据单锥角收敛间隙流体静压密封模型，提出多锥角收敛间隙流体静压密封的结构，建立双锥角和三锥角 {j流体静压密封端面间液膜数值分析模型，采用Fluent流体分析软件计算得到端面间的压力和速度分布，分析工作参数如 苓转速、压力，密封结构参数如锥角等对密封性能的影响。结果表明：双锥角或三锥角模型，当其任意一个锥角增大，泄 皇漏量和开启力都增大；越靠近内径的锥角大小对密封性能的影响越大；转速对密封性能影响不大；增加锥角数量，可改 苫善压力分布，提高开启力。 关键词：静压密封；锥角；工作参数；密封性能 中图分类号：TB42文献标识码：A文章编号：0254—0150(2010)10—081—5 NumericalofMulti-cone Analysis AngleConvergence PressureSeal GapHydrostatic Mo Cai Li Ligen diningZhangQiuxiangShuangxi ofChemical 100029，China) (BeijingUniversity Technology，Beijing variablecone structureof sealwas basedonthe Abstract：The angle convergencegaphydrostaticpressure presented cone model．Thenumericalmodelsof sealsbetweenthefilmforthedoublecone single angle analysis hydrostaticpressure were and wereobtained fluid and cone distributions angle triple angle established，thepressurevelocity byusing analysis of as and structural suchas softwareFluent．Theeffects such operatingparametersspeedpressure，thesealing parameters cone on were resultsshowthatthe and forceincrease performanceanalyzed．The leakageopening obviously anglesealing withtheincreasesof ofthecone indoublecone or cone