液压阀内流阻研究与结构优化

Flow Resistance Research and Structure Optimization of Hydraulic Valve

整体式多路阀因流道结构复杂、金属表面粗糙,阀口始终存在节流损失和内部流动阻力损失,而且阀芯和阀体之间的配合间隙仅为数微米,当工程机械在恶劣环境下作业,常会发生运动缓慢甚至卡滞现象。综合考虑液压挖掘机的实际工况,针对其复合动作,考虑了多路阀阀口各种不同形式的节流口和阀体内部的复杂流道结构,并对内部流动阻力发生的主要部位及损失大小等问题进行深入研究,对流道结构进行了仿真分析和优化设计。

The integral multichannel valve has a complex flow channel structure and rough metal surface,and the valve port always has the loss of throttle and the loss of internal flow resistance,and the gap between the valve core and the valve body is only a few microns. When the engineering machinery worked in a bad environment,it often became slow or even stagnating. Considering the actual conditions of hydraulic excavator,the composite action,the multichannel valve port and various forms of internal complex flow structure,in-depth researched the main parts,the internal flow resistance loss and the size of the channel,the simulation analysis and the optimized design of the flow channel structure were put forward.