电液伺服阀静态测试台阀前压力变化特性研究  

Pressure Falling of Electro-hydraulic Servo Valve Static Test Board

作　　者：沈国泉[1] 

机构地区：[1]杭州科技职业技术学院,浙江杭州311402

出　　处：《液压与气动》2014年第8期115-117,共3页Chinese Hydraulics & Pneumatics

摘　　要：电液伺服阀静态测试台,由于阀前采用整体式电比例溢流阀,在小流量时压力有突然下降现象,导致溢流流量小于5 L/min时压降变大,不能满足试验要求。用电比例溢流阀控制二通阀可以克服压降大的问题,但是由于设备间有2根30 m长管道存在,导致在高压时有管路震动和啸叫问题,也无法使用。最终采用震荡环节最少的直动式大流量溢流阀克服上面两个问题,既实现小压降,又实现管路不震荡,实现了电液伺服阀静态测试要求。An electro-hydraulic servo valve static test board is developed.Since an integral electric proportional relief valve is used,the pressure appears a sudden falling when the flow is under 5L/min,which is unacceptable.When the proportional relief valve is used to control the two-port valve,the problem can be overcome,but there are two 30 meters long pipelines in this equipment,which results in high pressure pipeline shake and noise.A large flow direct-acting relief valve is used to overcome the above two problems,which meets the requirements of the electro-hydraulic servo valve static test.

关 键 词：电液伺服阀 静态测试台 电比例溢流阀 二通阀 

分 类 号：TH137[机械工程—机械制造及自动化]