新型双工质平面叶栅冷却试验风洞设计

针对重型燃气轮机高温涡轮叶片的双工质冷却技术,设计建造了研究双工质冷却新原理,高效气膜冷却机理及叶片综合冷却特性的叶栅试验平台。该平台由压缩机、蒸汽发生器分别提供空气源和蒸汽源,可以进行叶片双工质冷却情况下的叶片综合冷却特性研究及相关扩展研究。从而揭示叶片内冷却工质的流量压力分配关系,气膜冷却效率以及叶片特定冷却结构下的综合冷却特性,为新型双工质冷却叶片的设计提供试验验证支持。

Design of new cascade wind tunnel for turbine blade using dual fluid cooling technology

For dual fluid cooling technology of high-temperature turbine blade of heavy-duty gas turbine, we have designed and built the test platform of cascade with which we can research new principle of dual fluid cooling technology and film cooling technology of high-temperature turbine blade, also, we can research the integrated cooling characteristics of turbine blade. Steam and air were supplied by air compressor and steam generator, experimental investigation of integrated cooling characteristics of turbine blade using dual fluid cooling technology and the related expansion cooling studies can be carried out with the platform. So, we can reveal the distribution relations of the two coolant, the efficiency of film cooling and the integrated cooling characteristics under a particular cooling structure, to provide support of experimental verification for the new dual fluid cooling blade design.