微型燃气轮机表面式回热器的应力分析  

Stress Analysis of Surface Type Recuperator in a Micro-gas Turbine System

作　　者：张冬洁[1] 王军伟[1] 梁红侠[1] 曾敏[1] 王秋旺[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049

出　　处：《动力工程》2008年第2期200-204,共5页Power Engineering

基　　金：国家"863计划"能源技术领域燃气轮机重大专项课题资助项目(2002AA503020);国家教育部"新世纪优秀人才支持计划"资助项目(No.NCET-04-0938)

摘　　要：应用ANSYS软件,对100kW高效紧凑式微型燃气轮机用表面式回热器进行了应力分析,验证了选用的换热片材料(0Cr18Ni11Nb)的可靠性.结果表明:温度载荷所产生的热应力是应力中的主要部分,温度每升高50K,应力增大6MPa;换热片设计成燃气通道截面积大于空气通道截面积时具有最高的强度.The stress of surface type reeuperator in a 100 kW high efficient and compact micro-gas turbine was analyzed by software ANSYS. The reliability of primary sheet＇s material （0CrlSNillNb） chosen has been proven. The results show that the thermal stress caused by the temperature loading consisted of main portion of the stress. The stress increases 6MPa with the temperature increasing by 50K. The structural strength of the primary sheet is the highest when the sectional area of the gas passage is larger than that of the air passage.

关 键 词：能源与动力工程 微型燃气轮机 回热器 应力分析 有限元法 强度 

分 类 号：TK479.11[动力工程及工程热物理—动力机械及工程]