["泵 detpe和流量求助"
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"Le fil a été dernier modifié par parqw 也修改了同样的管路系统，有一家的泵开起来就能满足流量和和和和扬程，换另外一家的泵，流量就大许多扬程降低很多必须要把泵出口出口阀门关掉一半才能达到要求压力和所需的流量但是出口阀门之后的所需要的用户压力就保证不了请问是什么原因？"
"Deux fabric的泵额定流量和额定扬程都是一样的"
"L'autre pompe a un flux inférieur的流量偏低检查下进口过滤器是否有堵塞"
"Il faut必须要要把泵出口出口阀门关掉一半才能达到要求压力和所需的流量但是出口阀门之后的所需要的的用户压力就保证不了这两句话是不是矛盾？？？"
"1D'après lesl'information从介绍的信息看两台泵均能达到工作点的压力和和和流量要求的要求 由于是两个工厂的产品泵本身的水力特性不一定相同更有可能制造工厂在选型时时时对额定点与工作点的设定不一致性能曲线不一致" " "泵在运行时的工作点点是泵特性曲线与管路特性曲线的交点由于两台泵的性能曲线不一样需要改变管路特性达到同样的需求后者泵关小出口阀以达到达到使用用 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
楼上回答比较全面。应该是两台泵的性能曲线不同，虽然额定工况点一样，但偏离额定工况后两台泵的流量和扬程变化趋势不一样，应该是第二台泵的流量扬程曲线更缓一些。至于解决办法也没有什么好的建议，有机会的话给第二台泵换一个流道更窄的叶轮试试。
泵标的参数与你运行的不一样，性能曲线有差异。
不同厂家的产品，尺寸不一样，结构不一样，性能曲线也就不一样
查看泵的性能曲线，计算管道流体力学，与泵的匹配