灵活性运行1000MW机组汽轮机高压内缸温度场和应力场的有限元模拟  

Analysis of Temperature and Stress Fields in the High Pressure Inner Cylinder of a 1000MW Unit under Flexible Operating Conditions

作　　者：刘俊建 王万里 吴坤民 吴胜川 周伟军 LIU Jun-jian;WANG Wan-li;WU Kun-min;WU Sheng-chuan;ZHOU Wei-jun(Datang East China Electric Power Test and Research Institute,Hefei 230088,China;Shanghai Jiao Tong University,Shanghai 200240,China;Shenzhen Datang Baochang Gas Power Generationg Co.,Ltd.,Shenzhen 518110,China)

机构地区：[1]大唐华东电力试验研究院,合肥230088 [2]上海交通大学,上海200240 [3]深圳大唐宝昌燃气发电有限公司,深圳518110

出　　处：《汽轮机技术》2024年第4期307-311,共5页Turbine Technology

摘　　要：通过对某1000MW机组汽轮机高压内缸现场三维扫描后建模,调取调峰工况下高压内缸进出口温度和压力参数,有限元模拟计算稳态及变负荷工况下该汽轮机高压内缸缸体的温度场和应力场。结果表明,在满负荷和低负荷稳态运行时,高压内缸温度场和应力场分布均匀,低负荷时的最大应力小于满负荷。随着机组负荷的增加或降低,内缸温度变化不大,但其最大应力相应地增大或减小,可见,汽轮机的启停和变负荷会导致高压内缸应力的周期性变化,从而对内缸的疲劳寿命产生影响。This paper conducts a three-dimensional modeling of the high-pressure inner cylinder of a 1000MW unit steam turbine by scanning it on-site and combining it with the installation diagram.The model was processed and meshed in the finite element analysis software.Take the temperature and pressure at the inlet and outlet of the high-pressure inner cylinder during peak load regulation of the unit for a certain period of time,and load the temperature and pressure in stages to the inner wall of the inner cylinder where the moving and stationary blades are located.The temperature and stress fields of the high-pressure inner cylinder were calculated under steady-state and variable load conditions.Laying a solid foundation for the analysis of life damage of steam turbine components during peak shaving in the future.

关 键 词：汽轮机 灵活性运行 三维建模 有限元模拟 温度场 应力场 

分 类 号：TK284.1[动力工程及工程热物理—动力机械及工程]