A11VLO260LRDG/11R-NZD12K67V斜轴液压泵河北唐山柱塞泵的工作原理
柱塞泵是液压系统的一个重要装置。它依靠柱塞在缸体中往复运动,使密封工作容腔的容积发生变化来实现吸油、压油。柱塞泵具有额定压力高、结构紧凑、效率高和流量调节方便等优点,被广泛应用于高压、大流量和流量需要调节的场合,诸如液压机、工程机械和船舶中。
柱塞泵是往复泵的一种,属于体积泵,其柱塞靠泵轴的偏心转动驱动,往复运动,其吸入和排出阀都是单向阀。当柱塞外拉时,工作室内压力降低,出口阀关闭,低于进口压力时,进口阀打开,液体进入;柱塞内推时,工作室压力升高,进口阀关闭,高于出口压力时,出口阀打开,液体排出。当传动轴带动缸体旋转时,斜盘将柱塞从缸体中拉出或推回,完成吸排油。
A11VLO260LRDG/11R-NZD12K67V斜轴液压泵河北唐山河北唐山A11VLO260LRDG/11R-NZD12K67V
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A11VO40LRS/10R-NSC12N00
A11VO40LRS/10R-NPC12N00
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A11VO40LRH2/10R-NPC12N00
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A11VO130LRS/10R-NSD12N00
A11VO130LRS/10R-NPD12N00
图1所示为IT系统发生次接地故障示意图,当系统发生次单相接地故障时,故障电流为两非故障相对地电容电流的相量和Id,由于这个电流值甚小,不会造成人身或者其它事故,也不会切断电源,保证了系统供电的连续性。但是如果不及时排除故障,当第二次另一相发生接地故障时,相当于形成相间短路,使过电流保护装置动作,引起供电的中断,这对于重要的供电场所来说,是不允许的。图1IT系统接地故障示意图Fig.1ITsystemgroundingfaultdiagram为了防止上述短路故障的发生,T系统应设置绝缘监测器。
以上型号不全~可咨询~