轴向柱塞泵配流副楔形油膜温度特性

Temperature characteristics of plane port pair of axial piston pump

以某型斜盘式轴向斜柱塞泵为研究对象,推导了配流副油膜在楔形状态下泄漏流量损失,以及黏性摩擦能量损失的数学模型,解明配流副间隙油膜的温度变化规律.分析结果表明:配流副油膜温度场呈不均匀分布,外密封带的油膜温度沿半径方向递增,随工作压力的增大而显著升高;内密封带的油膜温度沿半径方向递减,随工作转速的增大而显著升高.配流副油膜温度的最大值分别出现在半径最大以及半径最小的两个边界层上,与磨损实验中配流盘在这两边界层上最易发生磨损的现象相吻合.

Based on a certain type of swash plate axial piston pump,mathematical model of film leakage flow loss and viscous friction energy loss was derived.Therefore,temperature variation of port plate’s oil film was obtained.The analysis results show that film temperature field was unevenly distributed.The oil film temperature of the outer sealing belt increases along the radius direction,and it increases with the working pressure,the oil film temperature of the inner sealing belt increases along the radius direction,and it decreases with the working speed.The maximum value of the temperature appears in the two boundary layer,which located in the largest and the smallest radius.And the result is consistent with the experiments that the most likely to be wore is in the two boundary layer.