In this paper,the HP heater system of the 1000-MW double reheat unit,which is independently developed by Shanghai Electric Power Generation Equipment Co.,Ltd.,is introduced.The HP heater is designed and developed based on the concept of failure modes.By using the finite element analysis and the temperature field analysis,the pure converse-flowing structure is creatively exploited based on the typical three-heating-zone structure,a special high temperature resistant,Material 91,is selected,and the standards and design codes for specific companies are made.The application shows that the system has high operational economic efficiency,is easy to install and maintain and reaches the boundary conditions of the unit.The technologies introduced in this paper can be promoted and applied on other 660-MW or 1 000-MW units to produce great benefits both socially and economically.%介绍了由上海电气电站设备有限公司电站辅机厂自主开发的1 000 MW二次再热机组的高压加热器系统.其设计开发基于失效模式的设计理念,利用有限元分析和温度场分析方法,在典型三段式换热结构的基础上创新性地开发了纯逆流换热结构,选取特殊的耐热钢91材料,制定了专有的企业标准和设计准则.该设备和系统具有安装维护便捷、运行平稳高效的特点,很好的符合了机组运行的边界条件,提高了机组的效率.该技术可推广应用到660 MW或1 000 MW同类机组中,将取得极大的经济效益和社会效益.
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