超超临界汽轮机部件冷却技术的研究  

Research on Component Cooling Technique of Ultra Supercritical Steam Turbines

作　　者：史进渊[1] 杨宇[1] 孙庆[1] 邓志成[1] 林振坤[1] 

机构地区：[1]上海发电设备成套设计研究所,上海200240

出　　处：《动力工程》2003年第6期2735-2739,2760,共6页Power Engineering

摘　　要：分析了超超临界汽轮机部件采用蒸汽冷却技术的重要性,介绍了超超临界汽轮机喷嘴室、高压转子、中压转子、低压转子和汽缸的冷却结构的设计特点。提出了超超临界汽轮机冷却结构设计的关键技术,内容包括冷却参数的选取、部件温度场和应力场的有限元计算分析以及冷却效果的测量和验证。采用蒸汽冷却技术,可以提高材料的使用等级,有利于延长超超临界汽轮机部件的设计寿命。Importance of using steam cooling technique for ultra supercritical steam turbine components is analyzed. Design characteristics for cooling structure of nozzle chamber, high pressure rotor, intermediate pressure rotor, low pressure rotor and casing of ultra supercritical steam turbines are described together with key technique for cooling structure design of ultra supercritical steam turbines. The key techniques included cooling parameter design, finite element anlysis of temperature fields and stress fields for components as well as measurement and verification for cooling results. Application of the steam cooling technique is useful to lift use class of component materil and expand the design life of ultra supercritical steam turbine components. Figs 8 and refs 8.

关 键 词：超超临界机组 汽轮机 冷却技术 可靠性设计 结构设计 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]