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时间:2019-02-25
《浅析密封槽结构形式对液压缸内泄漏的数值》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、机床与液压Mar.2013HydromechatronicsEngineeringVo1.41No.6DOI:10.3969/j.issn.1001-3881.2013.06.015NumericalAnalysisaboutEffectoftheDifferentClearanceSealonHydraulicCylinderLeakageRateTANGJie,WANGLiwen,CHAIXiaoming。,LIUJingJ.AviationGroundSpecialEquipmentsResearchB
2、ase,CivilAviationUniversityofChina,Tianjin300300,China2.HebeiSteelGroupChengdeBranch,Chengdeo67lo2,China.Abstract:Inthispaper,accordingtotheinternalleakageofthelow-frictionhydrauliccylinder,ithasbeencomparedthattheleakagerateofthesealinggrooveofthethreedife
3、rentstructuresbyusingCFDsoftware.Andtheoptimalstructureformoftheclearancesealisobtained.Therefore.thispaperprovidesabasisfortherationaldesignandselectionofthehydrauliccylindersea1.Keywords:sealinggroove,internalleakage,numericalanalysis,hydrauliccylinderAll
4、theworksmentionedaboveprovidethebasisfor1.Introductionthereasonabledesigningofclearanceseal[1].Inthehydraulicsystem,theeficiencyofthehy.drauliccylinderiscrucia1.Usuallywecanusetheringsealandclearancesealtoimprovetheeficiency.Foracylinderwithclearanceseal,th
5、evolumetricefi—ciencywi11bedecreasedastheincreaseofworkingpressureandgap.Onthecontrary,themechanicalef-ficiencywillbejncreased.Therefore.accordingtothetheoryofenergyloss,thereisareasonableclearanceFig.1Low—frictionhydrauliccylinderandworkingpressurewhichcor
6、respondstotheoptimalefficiency.Simultaneously,thecylinderwi11become2.Theleakageoftheclearanceseallow—frictionastheexistenceofhydrauliccenteringforce(asshowninFig.1).ClearancesealcylinderAsshowninFig.2,thebasiccauseofleakageiscanminimizefrictiontothemaximale
7、xtentandim—thepressuredifferencebetweenAandBsides.Theprovethemechanicaleficiency.ItwillalsoenhancepressuredecreasesfromP1toP2,andthepressurethelowspeedperformance.Therefore,creepingphe—dropisPP1一P2.Thepressuredropiscausedbynomenoncanbeavoided.frictionduring
8、themovementofliquid,whichisInthisarticle,CFDsoftwareisusedtoanalyzecalledflowresistanceforshort.Ifpartbisexposedtothehydrauliccylinderleakageofthreekindsofclear-atmosphere,thepressuredropisequaltothepr
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