PARKER直動(dòng)式比例閥設(shè)計(jì)圖 美國丹尼遜直動(dòng)式比例閥

可減小與O形圈間的摩擦力矩密封組件開啟與關(guān)閉靈活操作力矩小
閥體隔板及上閥蓋軸孔部位鑲有銅套
ethe purpose ofdecompression.And then rel
減壓閥是個(gè)局部阻力可以變化的節(jié)流元件即通過改變節(jié)流面積
he outlet pressure automatically
使出口壓力自動(dòng)保持穩(wěn)定的閥門從流體力學(xué)的觀點(diǎn)看
that is, by changing the throttle
area, so that the kinetic energy of changing the flow

PARKER直動(dòng)式比例閥設(shè)計(jì)圖 美國丹尼遜直動(dòng)式比例閥
rate and fluid, causing different
is a local resistance to change spending components,
pressure loss, so as to achiev
因輸入壓力波動(dòng)而引起輸出壓力波動(dòng)的特性
使流速及流體的動(dòng)能改變?cè)斐刹煌?br />壓力損失從而達(dá)到減壓的目的然后依靠控制與調(diào)節(jié)系統(tǒng)的調(diào)節(jié)
maintain a stable valve. rom the
yonregulatory control and regulation systems
point of view of fluid mechanics pressure reducing valve
輸出壓力波動(dòng)越小減壓閥的特性越好
輸出壓力必須低于輸入壓力—定值才基本上不隨輸入壓力變化而變化