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滚动活塞压缩机滑片的运动行为及摩擦特性实验研究
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国家自然科学基金项目(51565004);广西制造系统与先进制造技术重点实验室资助项目(15-140-30S001).


Experimental Investigation on Motion Behavior and Friction Characteristics of Sliding Vane of a Rolling Piston Compressor
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    摘要:

    为研究滚动活塞压缩机滑片与滑槽之间的运动行为和摩擦特性,利用自主设计的基于浮动滑槽的滚动活塞压缩机滑片-滑槽运动副等效装置,通过高速摄影技术动态观测周期性运转过程中的滑片-滑槽间隙的动态变化过程,实验发现滑片存在二阶运动。通过润滑状态的分析,得出滑片的二阶运动通过改变油膜厚度对滑片和滑槽之间的摩擦力产生较大影响,对滚动活塞压缩机滑片-滑槽的摩擦特性的研究,应考虑滑片二阶运动的影响的结论。通过摩擦力动态测量实验,获得滑片两侧摩擦力变化曲线。结果表明:滑片与吸气腔侧的滑槽处于完全流体润滑状态,其摩擦力变化速率较小,而与压缩腔侧的滑槽处于固-固接触的混合润滑状态或者边界润滑状态,其摩擦力变化速率较大。摩擦力测量结果进一步印证了滑片二阶运动的存在,且二阶运动通过改变油膜厚度对滑片和滑槽之间的摩擦力产生影响

    Abstract:

    In order to study the motion behavior and friction characteristics between the sliding vane and the chute of a rolling piston compressor,the highspeed camera technology was used to observe the dynamic clearance between sliding vane and chute working in a periodic operation process in a selfdeveloped equivalent device of sliding vanechute mechanical pair based on floating chute.It is found that there is a two order motion of the sliding vane.Through the analysis of lubrication state,it is concluded that the two order motion of the sliding vane has a great influence on the friction force between the sliding vane and the chute by changing the oil film thickness,and the study on the friction characteristics of the sliding vane and the chute of the rolling piston compressor should consider the influence of the two order motion of the sliding vane.The friction curves on both sides of sliding vane were obtained by a friction dynamic measurement experiment.It is showed that the sliding vane and the chute on the side of suction chamber is in fluid lubrication state,and the changing rate of friction is smaller.While the sliding vane and the chute on the side of compression chamber is in mixed lubrication or boundary lubrication conditions of solidtosolid contact,and the changing rate of friction is larger.The results of the friction measurement further confirm the existence of the two order motion of the sliding vane,and the two order motion affects the friction between the sliding vane and the chute by changing the oil film thickness.

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郑贤.滚动活塞压缩机滑片的运动行为及摩擦特性实验研究[J].润滑与密封,2018,43(9):91-97.
. Experimental Investigation on Motion Behavior and Friction Characteristics of Sliding Vane of a Rolling Piston Compressor[J]. Lubrication Engineering,2018,43(9):91-97.

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  • 在线发布日期: 2018-09-26
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