燃气轮机叶片热障涂层隔热效果计算  

Calculation of the Effect of Thermal Barrier Coatings of Vanes

作　　者：朱健[1] 胡传顺[1] 尤国武 周旭辉[1] 陈志军[1] 秦华[1] 

机构地区：[1]辽宁石油化工大学机械学院材料系,辽宁抚顺113001 [2]抚顺石化分公司石油一厂,辽宁抚顺113008

出　　处：《石油化工高等学校学报》2003年第4期44-47,共4页Journal of Petrochemical Universities

基　　金：金属腐蚀与防护国家重点实验室资助项目(J930202-K2AA7)

摘　　要：热障涂层能提高叶片的耐高温和耐腐蚀性能,从而提高燃气入口温度,使增大燃气轮机效率成为可能。主要根据燃气轮机的结构特点,从热力学角度分析叶片的传热特点,建立一维稳态模型,从理论上分析如何计算热障涂层的隔热效果,为近一步研究热障涂层提供一种实用的理论比较方法。计算结果表明,当叶片基体材料可以承受1173K时,燃气入口温度可以达到1749K,在叶片上分别喷涂0.5mm和1mm厚热障涂层后,相对于无涂层,燃气入口温度可分别提高113K和190K。The thermal barrier coatings (TBCs) can improve the resistance of oxidation and corrosion of the turbine' vane, raising the inlet temperature of gas, which thus enhances the efficiency of the turbine system. According to the one- dimensional - steady -state thermal conduction model, we could solve how to calculate the TBCs in theoretic calculation based on the thermodynamic analysis. The results show that when the vane bulk material can support 1 173 K, the inlet temperature of gas can reach 1 749K, being relative to the non-coating, the inlet temperature of gas can increase 113 K and 190 K respectively after the blades are sprayed 0.5 mm and 1 mm coatings.

关 键 词：燃气轮机 叶片 热障涂层 隔热效果 计算 传热模型 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]