发电机冷却用单级轴流风机的结构及性能研究

Performance Analysis and Structural Design of the Single-stage Axial Flow Fan Cooling the Generator

对上海电机厂制造的３００ＭＷ发电机内部冷却用风机的结构和性能进行了研究，通过试验分析，以及三元流场的有限元数值计算，提出了新的设计思想，重新设计了改进型风机，并采用带分流叶片的后导叶结构，改善了风机的性能，提高了风机效率。

The performance analysis and structural design of the single-stage axial flow fan cooling the 300MW generator made in shanghai generator factory are presented. By the experiment and the numerical analysis of the finite element method for the 3-D flow field, a new design is developed with splittered cascade straightener for the fan structure. It is shown that the fan performance can be improved using the new design.