我国目前农村机电排灌站的水泵大部份为轴流泵、混流泵和离心泵。而在轴流泵系列中又大部份为立式轴流泵,形式单调,而且水流通过立式轴流泵时,要被迫作两次转向,造成较大的水力损失。根据江苏农学院所作的模型试验,一般卧式轴流泵装置效率在70％以上,而立式轴流泵装置效率一般在60％左右,两者相比,前者装置效率要高出10％左右。这对泵站建设和技术改造具有很 At present, most of the pumps in rural electromechanical irrigation and drainage stations in China are axial-flow pumps, mixed-flow pumps and centrifugal pumps. In the axial flow pump series and most of the vertical axial flow pump, the form of monotonous, and flow through the vertical axial flow pump, to be forced to make two steering, resulting in greater hydraulic losses. According to the model tests conducted by Jiangsu Agricultural College, the efficiency of horizontal axial-flow pump devices is generally above 70%, while the efficiency of vertical axial-flow pump devices is generally about 60%. Compared with the former, the efficiency of the former device is about 10% higher . This pump station construction and technological transformation have very