高速高压圆弧齿轮泵滑动轴承油膜特性研究.pdfVIP

高速高压圆弧齿轮泵滑动轴承油膜特性研究

摘要：以用于补偿高速高压圆弧齿轮泵不平衡径向力的滑动轴承为研究对象，在对其进行理论建模和分析的基础上，利用计算流

体动力学软件Fluent分析相同工况下不同初始油膜厚度、进油口直径、进油口角度、轴向封油边宽度、油腔深度等结构参数对滑动轴

承油膜特性的影响,并在此基础上对轴承结构参数进行了优化,最后通过实验进行验证。研究结果表明：初始油膜厚度和进油口角度

对轴承温升影响显著，初始油膜厚度或进油口角度的增加使滑动轴承温升明显减小；轴向封油边的增加使轴承承载面增大，轴承承载

力和温升也随之增大；进油口直径取1.7mm和静压槽深度取1mm时，使轴承温升达到最低；在负载压力15MPa、转速6000r/min工

况下，与安装未优化滑动轴承的齿轮泵相比，安装优化后滑动轴承的齿轮泵温度降低5℃。

关键词：圆弧齿轮泵；滑动轴承；高速高压；计算流体动力学；油膜特性

StudyonOilFilmCharacteristicsofSlidingBearingforHighSpeedand

HighPressureArcGearPump

Abstract:Takingtheslidingbearingusedtocompensateunbalancedradialforceofhighspeedandhighpressurearcgearpumpastheresearch

object,basedontheoreticalmodelingandanalysis,ComputationalfluiddynamicssoftwareFluentwasusedtoanalyzetheinfluenceofdifferent

initialoilfilmthickness,inletdiameter,inletAngle,axialsealingedgewidth,oilcavitydepthandotherstructuralparametersontheoilfilm

characteristicsofslidingbearingunderthesameworkingconditions.Onthisbasis,thebearingstructuralparameterswereoptimized,and

finallyverifiedbyexperiments.TheresultsshowthattheinitialoilfilmthicknessandoilinletAnglehaveasignificanteffectonthebearing

temperaturerise,andtheincreaseoftheinitialoilfilmthicknessoroilinletAnglemakesthetemperatureriseoftheslidingbearingdecrease

obviously.Theincreaseofaxialsealingedgeincreasesbearingsurface,bearingcapacityandtemperaturerise.Whenthediameteroftheoil

inletis1.7mmandthedepthofthehydrostaticgrooveis1mm,thetemperatureriseofthebearingisthelowest.Undertheloadpressureof

15MPaandspeedof6000r/min,thetemperatureriseofthegearpumpwithoptimizedslidingbearingis5Clowerthanthatofthegearpump

withoutoptimizedslidingbearing.

Keywords:arcgearpump;slidingbearing;highspeedandhighpressure;CFD;oilf