充水式潜水电机转子水摩擦对转子挠度影响的探讨

The Discussion of Water Friction Impact on the Rotor Deflection for Water Filling Submersible Motor

传统的国内外潜水电泵只能立式运行,其安装及维护困难、工程费用极高。若强行卧式运行则会造成轴承系故障,直至电泵烧毁,因此在矿井主排水上首推卧式潜水电泵。卧式湿式潜水电机定转子是否相擦是其能否正常运行的一大标准,同时能否准确地计算出湿式潜水电机转子挠度是湿式潜水电机定转子是否相擦的关键要素。在以往的湿式潜水电机转子挠度的计算中,一般采用的方法是基于传统的电机转子受力分析及其挠度计算,即转子的质量惯性力和单边磁拉力共同作用下的挠度。其中并未结合湿式潜水电机转子所处环境特点,即其所受水摩擦对转子挠度的影响。本文基于流体摩擦理论,对湿式潜水电机转子挠度引入水摩擦力的分析,最后通过Ansys有限元分析以使其挠度值更加趋于准确值。

The traditional domestic and overseas submersible pumps can only work vertically, the installation and maintenance are difficult, and the cost of the project is extremely high. If it is forced horizontally operating, the bearing will be fault, then the pump will be burned down, so in the main mine drainage, however, giving priority to the horizontal submersible pumps. Whether horizontal water filling submersible motor rotor rub with the stator is a standard to prove the motor operating normally or not, at the same time calculating the water filling submersible motor rotor deflection whether accurately or not is the key element of the rotor rub with the stator. In the past the water filling submersible motor rotor deflection of the calculation, a general use based on the traditional motor rotor stress analysis and calculating the deflection, that is, the quality of the rotor inertial force and unilateral magnetic force under the combined action of deflection, which were not combined with wet submersible motor rotor environment characteristics, that is, by its water friction on the influence of the rotor deflection. This paper, based on the theory of fluid friction, the wet submersible motor rotor deflection of friction introduced water analysis, finally through Ansys finite element analysis for the deflection value to reach more tend to be accurate values.