浮杯泵织构化配流副表面的承载特性仿真分析

浮杯泵作为柱塞泵的新型研究对象,配流副的摩擦磨损限制其高效发展.通过在滚筒板配流面上布置规则的仿生织构,探究其对摩擦副承载特性的影响.选取六种坑形,建立6凹坑润滑油膜模型,采用Fluent软件进行数值模拟,分析油膜的上表面压力分布、压力形成机理以及工况参数和织构参数对油膜承载力的影响.研究结果表明:油膜上表面的承载力中动压所占的比例最大,球形凹坑最适合浮杯泵织构化配流副的设计,转速的提高、面积率的增大、深径比的增大都有利于动压承载力的增大.

Simulation analysis on the bearing characteristics of textured valve plate surface of floating cup pump

The floating cup pump as a new research object of the plunger pump, the friction and wear of valve plate limits its high efficiency development. The influence of bionic texture on the bearing characteristics of friction pair was studied by arranging regular bionic texture on the roller plate. Six different shapes of pit were selected to establish a 6-pit lubricating oil film model. Fluent software was used for numerical simulation to analyze the pressure distribution on the upper surface of oil film, the pressure formation mechanism and the influence of working condition parameters and texture parameters on the bearing capacity of the oil film. The research result shows that: The proportion of dynamic pressure is the largest in the bearing capacity of the upper surface of oil film, and spherical pit is most suitable for the design of textured valve plate surface of floating cup pump. The increase of rotational speed, area ratio and depth to diameter ratio are beneficial to the increase of dynamic pressure bearing capacity.