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本文研究的三通型先导比例减压阀,采用“系统压力直接检测、反馈”的闭环控制原理和先导级与主级的“级间动压反馈”原理,主阀采用双可变节流边的结构,先导阀采用双可变先导液阻半桥结构。该阀具有优良的“快速性”、“等压力特性”和稳定性。
The three-way pilot proportional pressure reducing valve studied in this paper adopts the closed-loop control principle of “direct detection of system pressure and feedback” and the principle of “dynamic pressure feedback between stages” of pilot and main stages. The main valve adopts double variable throttling Structure, pilot valve with dual variable pilot liquid half-bridge structure. The valve has excellent “quickness”, “equal pressure characteristics” and stability.