槽腔结合配流的柱塞泵数字化建模与仿真

以某型号带预升压槽和预压缩腔结构的柱塞泵为对象，进行数字化建模与仿真。针对柱塞泵机液耦合问题，考虑流体的可压缩性，利用AMESim建立整个柱塞泵数字化模型。分别在柱塞流量子模型和柱塞配流子模型中引入相对节流面积值，并通过分段函数进行控制，从而实现柱塞副、配流副、滑靴副泄漏以及槽腔结合结构配流的数字化。通过对整个柱塞泵的模拟仿真，分析槽腔结构参数对柱塞泵性能的影响。搭建了柱塞泵实验平台，验证了数字化模型的正确性，为泵的结构优化提供了理论依据。

Digital Modeling and Simulation of Piston Pump with Groove Cavity Combined Flow Distribution

A certain type piston pump with pre pressure boost groove and pre compression chamber was taken as the object, and the digital modeling and simulation were carried out.Aimed at the mechanical and hydraulic coupling problem of piston pump, considering the compressibility of the fluid,a digital model of the whole piston pump was established by using the AMESim software.The relative throttle area value was introduced into the piston flow sub model and piston flow distribution sub model respectively, which was controlled by using the piecewise function,thus the digitization of the leakage of the piston pair, flow distribution pair, slipper pair and flow distribution for the groove cavity combined structure were realized.Through the simulation of the whole piston pump, the influence of the cavity structure parameter on the performance of the plunger pump was analyzed.The experimental platform of the plunger pump was built, the correctness of the digital model was verified. It provides a theoretical basis for the structural optimization of the pump