摘要
为满足全液压压裂车液压系统液压缸的换向需求,设计了大流量换向阀组,重点设计了阀芯、阀套组件;分析了大流量换向阀的原理与结构,建立了其数学模型,基于AMESim软件分析了主阀的开启时间,阀芯位移、速度与先导流量和先导压力的关系,结果表明:适当增大先导压力和先导流量可提高主阀的响应特性;改变主阀端面结构、适当增大先导压力和减小先导流量可解决主阀瞬时流量过大的问题。设计与仿真相结合,缩短了主阀的设计时间,为阀的设计计算提供了参考价值。
A high flow hydraulic directional control valve is designed, especially the valve spool and valve pocket, to content the reversing demand of hydraulic fracturing truck＇s hydro-cylinder. And the valve＇s theory and structure is analyzed, mathematical model by using the AMESim is established, the relationship between valve＇s response time, valve＇s displacement and velocity with guide flow and guide pressure is discussed. The results show that increasing guide flow and guide pressure properly can improve the valve＇s response characteristics;by changing end structure, increasing guide pressure and decreasing guide flow properly can solve the question of instantaneous oversize flow. With the combination between design and simulation, the valve＇s design time is shortened, and the reference valve for valve design is provided.
出处
《液压气动与密封》
2016年第2期47-51,共5页
Hydraulics Pneumatics & Seals
基金
"十二五"国家科技支撑计划项目(2015BAF07B08)
关键词
大流量换向阀
结构设计
响应特性
AMESIM
仿真
high flow hydraulic directional control valve
structure design
response characteristics
AMESim
simulation
