冷却蒸汽进口条件对转子冷却效果的影响

Effect of the Cool Steam Inlet Condition on Rotor Cooling Efficiency

对给定总压与给定流量两种冷气进口边界条件下的中压第一级进行了数值模拟,结果表明不同的冷气进口边界条件对叶片表面温度分布、冷却蒸汽的流动情况、10%叶高流面上各气动参数分布的影响非常的小。据此得出,对于超超临界汽轮机蒸汽冷却技术的工程应用,冷却蒸汽的进口条件可以通过不同的方式进行控制,最终所达到的冷却效果以及冷气对流动的影响是一致的。

The numerical simulation of cooling the medium pressure rotor with the different inlet boundary conditions which were constant total pressure and flow rate was carried out in the present paper, the computational results showed that the different inlet boundary conditions had little effect on the temperature distribution of blade surfaces, the flow status of cool steam and the aerodynamic parameters distribution of 10% relative blade height stream surface. Thus, for engineering application of steam cooling technique on uhra-supereritical steam turbine, the inlet condition of the cool steam could be controlled by different modes, but the cooling efficiency and the effect of cool steam on flow will be coincident ultimately.