中文摘要：

采用自主开发的冷却结构设计分析方法，对某型涡轮第一级动叶内部冷却结构进行方案设计。分别以E3和YX两种成熟的航空发动机作为基准机型，重新设计并评估两类拓扑结构的优劣。在管网设计计算中，以E3为母型设计的冷却结构，第一腔流量为5．77g／s，第二腔流量为8．28g／s，叶片最高无量纲温度为0．759，平均无量纲温度为0．655，最大温度出现在叶片前缘约为70％叶高位置，不能满足设计要求；以YX为母型设计的冷却结构，第一腔流量为6．88g／s，第二腔流量为7．12g／s，叶片最高无量纲温度为0．717，平均无量纲温度为0．646，叶片表面温度基本满足设计要求。

英文摘要：

In this paper, the internal cooling structure of a turbine is designed by the self - developed cooling structure design and analysis method. In this paper, two kinds of mature aero engines of E3 and YX are used as reference models to redesign and evaluate the advantages and disadvantages of the two types of topologies. In the design and calculation of the pipe network ,the cooling structure with E3 as the main structure, the first cavity flow is 5.77g/s, the second cavity flow is 8.28g/s, the highest dimensionless temperature of the blade is 0. 759, the average dimensionless temperature is about O. 655 ,the maximum temperature occurs in the blade leading edge about 70% blade height. The design does not meet the requirements, using The first cavity flow with YX cooling structure is 6.88g/s, the second cavity flow is 7.12g/s, the maximum dimensionless temperature is 0. 717, the average dimensionless temperature is about 0. 646, and the blade surface temperature basically meets the design requirements.