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深井泵型号复杂,因此,泵体内的叶轮级数也不尽相同,因而扬程、流量也就不同。所以,要根据机井的水文地质条件,合理选择深井泵,使泵井配套,物尽其用。深井泵的选择步骤是: 1.测出井的静水位、机井深度和井孔直径。 2.用抽水试验的方法,测出静水位至动水位的降深和水泵流量,从而计算出单位流量的水位降深。单位流量水位降深=试抽时静水位至动水位降深/试抽时水泵流量 3.根据井管内径的大小,选择泵管尺寸比井管内径小的水泵。 4.根据初选水泵的额定流量
Deep well pump model is complex, therefore, the pump body impeller series are not the same, so the head, the flow is also different. Therefore, according to the hydro-geological conditions of wells, a reasonable choice of deep well pump, pump well matching, make the best use. Deep well pump selection steps are: 1. Measured wells hydrostatic level, well depth and borehole diameter. 2. With the pumping test method, measured hydrostatic level to the dynamic water level and the pump to reduce the flow rate, so as to calculate the water level per unit of flow down. Decrease of the unit flow water level = hydrostatic level when the pump is pumping to the moving water level to deepen / pump flow when the pump is tested 3. According to the size of the well tube diameter, select the pump tube size smaller than the inner diameter of the well pump. 4. According to the nominal flow of the primary pump