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一、潜水泵的选择 1.潜水泵的扬程应大于实际扬程。即所选潜水泵铭牌上的扬程≥实际扬程+(1～2)米+损失扬程。损失扬程可按实际扬程的1/10估算。例如:实际扬程20米。应选潜水泵的扬程=20米+(1～2)米+2米。因此,可选用NQX-25型水泵,而不能选用NQX-20型,否则电机阻力太大易被烧毁。 2.如果水泵安装到井里,注意水泵的流量应符合井的正常出水量,否则会造成空机运行,烧毁电机。另外,水泵的最大外径应小于井管的直径,使水泵能在井里自由转动。
First, the choice of submersible pumps 1 submersible pump lift should be greater than the actual lift. The selected submersible pump head on the nameplate ≥ actual head + (1 ~ 2) m + loss head. Lost head lift can be estimated based on 1/10 of the actual lift. For example: the actual head of 20 meters. Submersible pump head should be selected = 20 meters + (1 ~ 2) meters +2 meters. Therefore, the pump can be used NQX-25, but can not use NQX-20 type, or the motor resistance is too large to be burned. 2. If the pump installed into the well, pay attention to the flow of the pump should be consistent with the normal well water, otherwise it will cause the empty machine to run, burn the motor. In addition, the maximum outer diameter of the pump should be less than the diameter of the well tube, so that the pump can rotate freely in the well.