大小单双倍投顺口溜

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自吸式离心泵如何选型

来源: 时间:2021-01-06 21:53:39 次数:

1)、应选择效率高、低噪声、节能型自吸式离心泵,严禁选择淘汰产品。
 2)、应根据设计流量、所需扬程选泵,且考虑自吸式离心泵因磨损等原因造成自吸式离心泵出力下降,可按计算所得扬程H乘以1.05~1.10系数后选泵;应选择特性曲线为随流量增大其扬程逐渐下降的自吸式离心泵,这样的泵工作稳定,并联工作时可靠;且自吸式离心泵的运行工作点应保持在高效区间运行,这样既节能又不易损坏机件。
 
3).当给水管网无调节设施时,宜采用调速泵组或额定转速泵组编组运行供水。泵组的最大出水量不应小于小区给水设计流量,并应以消防工况校核。
  4)、选择水箱、水塔的提升泵应尽量减少泵的台数,宜一用一备;当单泵可以满足要求时,则不宜采用多台并联方式;若必须采用多台并联运行或大小泵搭配方式时,其型号、台数不宜过多,型号一般不宜超过两种,自吸式离心泵的扬程范围应相近;并联运行时每台泵宜仍在高效区范围内运行。

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