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["Quelleel

2020-05-20View Original

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Reply #22020-05-20
继续翻译
Reply #32020-05-20
离心泵出口最小能开到最小流量点(按泵流量曲线)。变频离心泵出口一般不能全开,但后路有调节阀限量,可以全开。对于你第三条我不太懂什么意思。
Reply #42020-05-22
1、离心泵如果全关出口阀,随时间的增加,这部分动能不被输出,会使介质温度逐渐升高,甚至到沸点。所以在现场实际操作时,只要介质温度升高到不使介质气化,泵体机件允许的最高温度范围内,这时的出口阀开度是最小的允许值。山寨的解释。还是以曲线要求为准。 2、离心泵出口阀的开度要以额定电流范围内为参照。因为不考虑系统压力的前提下,流量越大电流越大。一切遵照整体设备设定的参数控制,切记不要极端化。追求压力不顾流量,追求流量不顾压力或不顾温度、电流的极限范围。第三条我不太懂什么意思,也整不明白,供参考。
Reply #52020-05-22
离心泵设置3条入口线路,3条出口线路,这种设置对多种工艺流程的调节变化有多大意义?
Reply #62020-05-22
变频离心泵,如果出口不需要全开,开到50%合适吗?如果调节到最大转速不超电流,是否可以把出口开到最大?跟流体介质有没有必然联系?

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