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ID:51459074
大小:4.09 MB
页数:8页
时间:2020-03-25
《封隔压差与间隙对封隔器胶筒性能的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2016年6月润滑与密封Jun?2016第41卷第6期LUBRICATIONENGINEERINGVol?41No?6DOI:10?3969/j?issn?0254-0150?2016?06?005∗封隔压差与间隙对封隔器胶筒性能的影响黎伟雷鸿翔袁圣桐杨牧宋伟(西南石油大学机电工程学院四川成都610500)???摘要:为探讨封隔压差和封隔间隙对封隔器胶筒封隔性能的影响,应用有限元分析软件,研究不同封隔压差和间??隙下胶筒的VonMises应力分布、胶筒与套管壁间接触应力的分布以及胶筒的变形情况。结果表明:随着封隔压差的??增大,胶筒上端部的Von
2、Mises应力值不断增大,胶筒失效的可能性增加,但胶筒与套管壁的接触应力值增大,胶筒????的封隔能力增强;随着封隔间隙的增大,胶筒上端VonMises应力值增大,胶筒剪切失效的可能性增加,且胶筒与套??管壁的接触应力减小,胶筒的封隔能力下降。设计出一种蜗形状防突装置,分析其对胶筒封隔性能的影响。结果表??明:蜗形保护环能有效地防止胶筒端部突出,且胶筒的应力分布更均匀,胶筒与套管壁间的接触应力值更大,提高了?胶筒的封隔能力。?关键词:胶筒;压差;封隔间隙;接触应力;蜗形保护环中图分类号:TB42文献标志码:A文章编号:0254-0150(2016
3、)06-018-07EffectofPressureandClearanceonPackingRubberofPackerLIWeiLEIHongxiangYUANShengtongYANGMuSONGWei(CollegeofMechanicalandElectricalEngineering,SouthwestPetroleumUniversity,ChengduSichuan610500,China)Abstract:Inordertoinvestigatetheeffectofsealingdifferentialpressureandc
4、learanceonpackingrubberofthepack⁃er,VonMisesstressdistributionofpackingrubber,thecontactstressdistributionbetweenpackingrubberandthecasingwall,andthedeformationofthepackingrubberunderdifferentpressureandclearancewereanalyzedbasedonthefiniteel⁃ementsoftware.Theresultsshowthat,
5、withtheincreasingofsealingdifferentialpressure,VonMisesstressvalueofpackingrubber’supperpartisconstantlyincreased,whichmayleadtothefailureofpackingrubber,butthecontactstressbetweenpackingrubberandthecasingwallisincreasedandsealingabilityofpackingrubberisimproved.Withtheincrea
6、singofsealingclearance,VonMisesstressvalueofpackingrubber’supperpartisconstantlyincreased,thepossibilityofpackingrubbershearingfailureisalsoincreased,andthecontactstressbetweenpackingrubberandthecasingwallisdecreasedwhichcausesthedecreaseofsealingabilityofpackingrubber.Aworms
7、hapedanti⁃extrusionringwasdesignedanditseffectonthesealingperformanceofpackingrubberwasanalyzed.Theresultsshowwormshapedprotectionringscaneffec⁃tivelypreventpackingrubberprotruding,thepackingrubberhasmoreuniformstressdistributionandhighercontactstressbetweenpackingrubberandth
8、ecasingwall,sothesealingabilityofpackingrubberisimproved.Keywords:pa
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