二维(2D)活塞泵原理性验证研究

Research and feasibility verification of two-dimensional(2D)piston pump

介绍了二维(2D)活塞泵的结构和工作原理,该泵利用活塞双自由度的运动原理(转动的同时能够轴向移动)来实现吸排油功能,并根据其工作原理给出了该泵的理论流量计算公式.为了验证二维(2D)活塞泵原理的可行性和初步测试该泵的容积效率,搭建了试验平台,设计了空载流量特性试验和负载压力流量特性试验.在空载和负载工况下,该泵都能正常完成吸排油工作.在空载工况下,随着转速升高实际流量呈线性增长,与理论流量接近.在负载工况下,随着压力升高,流量减小.通过试验验证了二维(2D)活塞泵的原理可行,容积效率在空载时较高,在负载时随压力增大有所下降.

The structure and the operating principle of the two-dimensional （2D） piston pump is introduced, the oil suction and extrusion functions are achieved by the motion principle of two degrees of freedom （rotate and axially move at the same time）, and the theoretical flow formula of the pump is given. No-load flow characteristic test and pressure-flow characteristic test are designed in order to verify the feasibility of the principle prototype. Test bed is built in order to get its volumetric efficiency. The results show that the prototype can work properly both under no-load and load condition. The actual flow is close to the theoretical value and the pump has a high volumetric efficiency under no-load condition. Under load condition, volumetric efficiency decrease with the pressure increasing.