【摘要】 由于液压变压器自身结构原因，其柱塞副运行过程更加复杂。为防止液压变压器运行过程中出现卡死或容积效率不高等问题，针对液压变压器柱塞副润滑特性开展了研究。推导了液压变压器变压比和柱塞副油膜雷诺方程，并使用ANSYS求解。结果表明：受到液压变压器结构的影响，柱塞副油膜压力、泄漏量和轴向黏性摩擦力变化复杂，与柱塞运动速度、柱塞腔压力和转速等因素有关。通过正交试验发现，影响柱塞副润滑特性的主要因素是配合间隙和A口压力。更多还原

【Abstract】 Due to the inherent structure of hydraulic transformer, its piston pairs are more complex during operation. In order to prevent the problems such as jamming or low volumetric efficiency during the operation of hydraulic transformers, the lubrication characteristics of the piston pair for hydraulic transformer are studied. The transformer ratio of hydraulic transformer and the Reynolds equation of piston pair are derived and solved by using ANSYS. The results show that the oil film pressure, leakage and axial viscous friction of piston pair are complex due to the influence of hydraulic transformer structure, which are related to the piston movement speed, piston cavity pressure and rotation speed. Through the orthogonal test, it is found that the main factors affecting the lubrication characteristics of piston pair are fit clearance and A-port pressure.更多还原