工程施工用潜水电泵的分析比较

全面分析了工程施工中常用的普通潜水泵和排污潜水泵的性能特点及其所存在的问题，详细介绍了潜水泵的换代产品－排水潜水泵的结构特点、性能特点和水力模型设计。排沙潜水泵是按二相流理论设计其水力模型；排沙潜水泵在结构上增加了“空气室”，使机械密封两端的压力平衡，减少泄露量，较为成功的解决了工程施工中抽排沙水、污水的技术难题；潜水泵电机内腔设置有“储水池”，当排沙潜水泵电机内腔产生 “结露”现象时，可避免排沙潜水泵电机的轴承润滑条件和绕组线圈的绝缘条件受到破坏；润滑条件的改善，叶轮、转轴等主要零件制造精度的提高，减小了振动和噪声，降低了发热量，使排沙潜水泵在工作时无需专人看护，允许电机长时间空转。

Analysis and Comparison of Submersible Pumps Used in Construction

In this paper the common submersible pump and the foul water submersible pump were compared with the submersible sand pump. Then, the principle and structure features of the submersible sand pump were introduced. The hydraulic pattern of submersible sand pump was designed according to two kinds of fluid theory. There is an air room at submersible sand pump added. The motor axle of submersible sand pump was extended from the air room. Inside the motor there is a small reservoir and the drop of water can be collected. The working condition of submersible sand pump was improved. The submersible sand pump can work longer time.