采用数值模拟方法对使用高低齿汽封和侧齿汽封结构的带隔板汽封透平级进行了研究，得到了透平级的级效率、主要气动参数、汽封漏气量等数据，分析了2 种不同汽封结构对透平级流动的影响，并对汽封流场中的流动情况进行了分析。

Numerical simulation is conducted on the performances of turbine stage with labyrinth diaphragm seal and labyrinth diaphragm seal with lateral teeth respectively and some parameters are obtained such as the turbine efficiency, the main aerodynamic parameter and the leakage flow. The paper analyzes the influences of two different gland seal structures on the turbine stage, and the flow condition of seal flow field.