电液锤主控换向阀流场分析及结构优化

Fluid Analysis and Structure Optimization of the Main-control Reversing Valve of Electro-hydraulic Hammer

利用流体有限元方法,对电液锤液压系统主控换向阀的流场进行了数值模拟;对电液锤在不同工况下主控换向阀内流场压力和速度等参量的分布、流道内流场的结构(速度、压力、流动的分离与再附壁、漩涡的产生与消失)与能量损失和元件性能等关系进行了分析,并对液压阀的结构进行了优化设计,得到了高效、低能耗的液压阀。

Flow field of the main-control reversing valve of electro-hydraulic hammer was simulated. Hydraulic valve＇s pressure and velocity distribution were analyzed in the working process. The relationship of the structure of the flow field （velocity,pressure, flow separation and reattachment, appearing and disappearing of vortices） with energy loss and component performance was proposed. The structure of the hydraulic valve was optimized ,which is high-efficiency and energy-saving.