意大利阿托斯ATOS 电磁阀 DKE-1710-X 24DC

武穴黎翔机电设备有限公司：18934630908(微信同号）

该压差就是由弹簧力来保持的。如当进油口或出油口的压力有变化时 ，节流阀前后的压差亦变化，流量也将随之变化，减压阀芯在这一瞬间由于两端受力不平衡而开始移动。当节流阀出口压力升高时 ，U 腔压力升高 ，减压阀阀芯向右移动，使减压节流口Z 开大，减压节流口压力损失减小，因而节流阀进口压力升高，直到使节流口 y 前后压力差达到原来的设定值，减压阀芯又处于一个新的平衡位置，流量也随之达到原来的值。反之，当节流阀出口压力下降时，U腔压力下降，减压阀阀芯左移，使减压节流口关小，压力损失加大，从而节流阀进口压力也下降，使节流口 y 前后压差保持在原来的值 。总之，不管负载变化，均可保持节流口前后压差相对不变，从而使流量保持不变。同理，当调速阀的进口压力发生变化时，也将与上述过程相似，自动调节节流阀两端的压力差，使其保持不变。这种调速阀叫做压力补偿式调速阀，简称调速阀。

常用性能

一般调速阀不带温度补偿， 可用在机床、动力头滑台及类似设备上 ；另一种带温度补偿装置，把转动式的阀芯改成薄刃结构的滑阀式阀芯以减少温度对流量的影响。因为节流阀的节流缝隙越短 ，温度对流量的影响就越小， 这是一种受温度影响较小的流量控制阀。或者是在调节螺钉与阀芯之间加一根用热敏性较大材料制成的感温杆， 温度变化时，利用阀芯的热胀冷缩来自动调节阀芯和阀体间形成的节流面积。带温度补偿的调速阀通常用在对调速性能要求很高的设备上

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武穴黎翔机电设备有限公司：18934630908(微信同号）