飞力ITT潜水搅拌器机械密封腔强化流动特性分析

利用Fluent流场分析软件，建立了机械密封强化流动密封腔和普通密封腔流场模型，对比分析了两种密封腔内流场特性；并采用正交试验，综合考虑叶轮结构对密封腔内流场特性的影响，分析了以搅拌功率为优化对象时叶轮结构参数的优化组合。结果表明：叶轮能够增强密封腔内流体的流动效果，减小密封腔内流动死区面积，增大强制涡流区域面积；叶轮外径对密封腔流场特性的影响程度最大，叶片倾角最小。

Enhanced flow performance analysis of an ITT Flygt submersible agitator mechanical seal cavity

The flow field models for an enhanced flow sealing cavity and a conventional sealing cavity have been established, and the flow properties of the two sealing cavities were compared using the Fluent software. By means of the orthogonal optimization method the combined effects of impeller parameters on the stirring efficiency were analyzed and the optimum combination of structural parameters of the impeller were obtained. The results show that the impeller can enhance the flow effect of the sealing fluid in the cavity, reduce the sealing cavity flow dead area, and increase the forced vortex area. The outer diameter of the impeller was found to have the greatest impact on the characteristics of the flow field and the blade angle of the impeller was found to have the least impact.