提高抽送黄河水用泵寿命的重要途径

Key Access to Increoying the Longevity of the Pump for Water Puming From Yellow River

从保证抽送黄河水用泵（以下简称抽黄泵）的寿命和工作可靠性出发，提出了抽黄泵性能参数选择的原则：限制抽黄泵的单级扬程Ｈ；限制抽黄泵单级扬程Ｈ与转速ｎ的乘积Ｈｎ值。并给出抽黄泵性能参数的Ｈ·ｎ－Ｑ关系曲线和泵的比转速ｎ＿ｓ与单级扬程Ｈ的关系曲线。

In order to ensure required longevity and wording reliability of the pumps forwater pumping from Yellow River,the selection principle of the performance parameteres ispresented,which includes the limit of single stage head H and the limit of the production ofmutiplication value H· n single stage head H and pump speed n.H·n-Q curve and the curveof specific speed n_s versus single head H are also given.