中国机械工程
中國機械工程
중국궤계공정
China Mechanical Engineering
2015年
18期
2481-2485,2490
,共6页
变量叶片泵%叶片定子副%叶顶曲率半径%润滑特性%数值分析
變量葉片泵%葉片定子副%葉頂麯率半徑%潤滑特性%數值分析
변량협편빙%협편정자부%협정곡솔반경%윤활특성%수치분석
variable vane pump%vane-stator pair%apical radius%lubrication characteristics%numeri-cal simulation
针对叶片泵叶片定子副在预卸压区中易发生对偶面间直接接触而加剧磨损的状况，通过分析叶片定子副在预卸压区中的润滑状态，建立了叶片定子副的弹流动压润滑模型，并数值模拟了接触区内压力分布，结合叶顶曲率半径和叶顶承载面积的变化对叶片定子副间力学特性的影响，分析了叶顶曲率半径和叶顶承载面积的变化对动压油膜润滑性能的影响。结果表明：叶片定子副处于预卸压区末端时润滑状况最差；承载面积的变化对叶顶载荷和润滑性能的影响不容忽视；增大叶顶半径后能改善摩擦副的润滑状态，许可范围内随叶顶曲率半径增大，接触区内油膜压力分布更趋均匀，叶片定子副间的润滑状况也更加稳定可靠。
針對葉片泵葉片定子副在預卸壓區中易髮生對偶麵間直接接觸而加劇磨損的狀況，通過分析葉片定子副在預卸壓區中的潤滑狀態，建立瞭葉片定子副的彈流動壓潤滑模型，併數值模擬瞭接觸區內壓力分佈，結閤葉頂麯率半徑和葉頂承載麵積的變化對葉片定子副間力學特性的影響，分析瞭葉頂麯率半徑和葉頂承載麵積的變化對動壓油膜潤滑性能的影響。結果錶明：葉片定子副處于預卸壓區末耑時潤滑狀況最差；承載麵積的變化對葉頂載荷和潤滑性能的影響不容忽視；增大葉頂半徑後能改善摩抆副的潤滑狀態，許可範圍內隨葉頂麯率半徑增大，接觸區內油膜壓力分佈更趨均勻，葉片定子副間的潤滑狀況也更加穩定可靠。
침대협편빙협편정자부재예사압구중역발생대우면간직접접촉이가극마손적상황，통과분석협편정자부재예사압구중적윤활상태，건립료협편정자부적탄류동압윤활모형，병수치모의료접촉구내압력분포，결합협정곡솔반경화협정승재면적적변화대협편정자부간역학특성적영향，분석료협정곡솔반경화협정승재면적적변화대동압유막윤활성능적영향。결과표명：협편정자부처우예사압구말단시윤활상황최차；승재면적적변화대협정재하화윤활성능적영향불용홀시；증대협정반경후능개선마찰부적윤활상태，허가범위내수협정곡솔반경증대，접촉구내유막압력분포경추균균，협편정자부간적윤활상황야경가은정가고。
Aiming at the direct contact between vane and stator in pre-lower pressure area which will aggravate the wear conditions,lubricating state and elastohydrodynamic lubrication model of vane-stator pair in vane pump were discussed.Then pressure distribution in contact area was studied by nu-merical simulation.Through analysing the effects of apical radius and bearing area of vane on mechan-ics property,the influences of them on the hydrodynamic lubrication performance of vane-stator pair were investigated.Results show that poor lubrication performance occure near the end of pre unloading zone.The effects of the change of bearing area on mechanics and lubrication performance can not be ig-nored.Increase of the apical radius can improve the lubrication condition and lead the distribute of pressure more uniformity.Therefore the lubricating condition is more stable and reliable.
