节流阀是通过改变节流截面或节流长度以控制流体流量的。将节流阀和单向阀并联则可组合成。节流阀和单向节流阀是简易的,在中,节流阀和配合,可组成三种节流调速系统,即进油路节流调速系统、回油路节流调速系统和旁路节流调速系统。节流阀没有流量负反馈功能,不能补偿由负载变化所造成的速度不稳定,一般仅用于负载变化不大或对速度稳定性要求不高的场合。 节流阀(Choke valve)的外形结构与并无区别,只是它们启闭件的形状有所不同。节流阀的启闭件大多为圆锥流线型,通过它改变通道截面积而达到调节流量和压力。节流阀供在极大的情况下作降低介质压力之用。 介质在节流阀瓣和阀座之间流速很大,以致使这些零件表面很快损坏,即所谓气蚀现象。为了尽量减少气蚀影响,阀瓣采用耐材料(合金钢制造)并制成顶尖角为140~180的流线型,这还能使阀瓣能有较大的开启高度,一般不推荐在小缝隙下节流。
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kistler VERST 5037 A1211
E+H FMU90-R12CB113AA1A
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parker D1FVE50BCVLB35
tecsis 3230, 0-1bar
FLEXA 0233.201.016
Kistler 6115BFD35Q05A41
CAPTRON CHT3-476P-H/TG-SR
ystral type.Y5.500 S/GD7-4 TDS
kistler 4577A5 0-5KN
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HYDAC HRBGS 1 A1TM 12-12 ST
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Rexroth NR.0822902050
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SIEMENS 6GK7343-1GX30-0XE0
demag DRS 160/200 Nr:75252044
CONTRINEX瑞士科瑞 LLS-1040-204
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Schneider XR2-AB07K20
GEWEFA 05.255.212
AIRTEC Solenoid valve M-07-510-HN coil 24VDC 4.5VA
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rexroth R900951870
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品牌之cognex CCB-84901-0302-02
BRINKMANN STA3031220+001
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AEG E91B25 1P 25A
PEI roll-away cover R011794 30064 123/008270
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