Flow control valve generally consists of constant pressure difference reducing valve and throttle valve. When it works under the condition of high differential pressure and flow, the pressure loss of reducing valve installed in main loop will get increased and the hydraulic oil temperature will be increased as well. A digital pilot flow control valve is studied in this paper. The main stage is a cartridge valve based on the flow amplifying principle. The pilot stage is digital flow control valve which consists of digital valve and constant pressure difference reducing valve. The digital valve controlled by PWM signal has some characteristics such as less throttling loss and good repeatability. The high pressure loss and hydraulic oil temperature will be effectively reduced by using constant pressure difference reducing valve in the small flow pilot circuit. Through theoretical derivation and simulation research, the feasibility of this valve is verified, and some conclusions are drawn for the relationships between the performance and structure parameters, which provides theoretical basis for their design.
参考文献
相似文献
引证文献
引用本文
郭晓霞,李陶陶,黄家海,权龙,王胜国.先导数字调速阀特性分析[J].机床与液压,2016,44(6):25-29. . Characteristic analysis of the digital pilot flow control valve[J]. Machine Tool & Hydraulics,2016,44(6):25-29