一、问题的提出潜水电泵以其结构简单,体积小,重量轻,安装、折卸、维修方便,占地面积小,无需建造专用泵房,受到广大用户欢迎,因而广泛地使用于农田排灌、矿山排水及城镇和工厂给水。但潜水电泵也存在其不足的一面。效率偏低,耗电较多,究其原因,除其所配潜水电机本身效率偏低、输水管径偏小之外,所配逆止阀局部阻力过大亦是导致其 First, the problem raised Submersible pump with its simple structure, small size, light weight, installation, disassembly, easy maintenance, small footprint, no need to build a dedicated pump house, welcomed by the majority of users, which are widely used in farmland irrigation and drainage , Mine drainage and water supply in towns and factories. However, submersible pump also has its shortcomings. Low efficiency, more power consumption, the reason, in addition to their submersible motor efficiency is low, the water pipe diameter is too small, the valve with the partial resistance is too large also led to its