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燃气透平带气膜动叶设计流程及分析

DOI: 10.13334/j.0258-8013.pcsee.2015.16.014, PP. 4112-4121

Keywords: 燃气透平,气膜,动叶设计,管网计算,温度

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Abstract:

为设计一套合理的带气膜燃气透平动叶冷却结构,采用一套设计流程对该结构进行设计,采用管网设计及三维温度场计算对比了2种不同的拓扑形式冷却结构,分析不同结构的冷却效果,并采用较优的结构进行详细设计。结果表明:对于前缘开设气膜孔的透平动叶,第二进口采用中腔进气,尾缘出气的结构比后腔进气尾缘及中腔出气效果好;采用这套设计流程能快速设计并评估冷却结构方案,并能够在设计方案的基础上进行详细的设计,达到冷却结构快速多方案设计的要求;该设计得出冷却结构最大温度1188.15K,平均温度1067.10K,冷却效率0.647。

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