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3DREPE6 先导式比例减压阀
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DBETE-5X/100G24K31M负载敏感泵是外部节流且稳定压差ΔP为定常值（直接由负载敏感阀的弹簧预紧力决定）。通过外部节流阀阀口开度进行泵的斜盘倾角的控制，节流阀口开度变小，泵的输出流量变小；节流阀口开度变大，泵的输出流量变大。
2、负载大小发生了变化（负载运动速度无变化需求时），观察负载敏感泵的自动调节过程
A：负载压力PL因某种原因降低，则动态压差△P会瞬时增大，那么通过节流阀的流量也会瞬时增加（小孔流量公式），则负载敏感阀芯向右移动，斜盘倾角减小，泵出油流量减小，直至动态压差△P再次等于P弹为止。
图10
B：负载压力PL因某种原因升高，则动态压差△P会瞬时减小，那么通过节流阀的流量也会瞬时减小（小孔流量公式），则负载敏感阀芯向左移动，斜盘倾角增大，泵出油流量增大，直至动态压差△P再次等于P弹为止。
1.阀块体的外形一般为矩形六面体。
2.阀块体材料宜采用35钢锻件或连铸坯件。
3.阀块体的大边长宜不大于600mm，所包含的二通插装阀插件数量宜不大于8。
4.当液压回路所含的插件多于8个时，应分解成数个阀块体，各阀块体之间用螺栓相互连接，结合面处的连接孔道用O型密封圈予以密封，组成整体的阀块组。连接螺栓的矩形性能应不低于12.9级。
5.设计阀块体的主级孔道时应考虑尽可能减小流阻损失及加工方便。
6.主级孔道的直径按公式(1)估算选取：
DBETE-5X/100G24K31M