中压内缸进汽腔温度场的测试与分析  

Temperature Field Measurement and Analysis of IP Inner Casing Inlet Chamber

作　　者：吴仕芳[1,2] 康明 张军辉 李潇潇 WU Shifang;KANG Ming;ZHANG Junhui;LI Xiaoxiao(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Turbine Works Co.,Ltd.,Shanghai 200240,China;Shanghai Electric Power Generation Equipment Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]上海汽轮机厂有限公司,上海200240 [3]上海电气电站设备有限公司,上海200240

出　　处：《动力工程学报》2021年第6期446-451,共6页Journal of Chinese Society of Power Engineering

摘　　要：为了验证采用传热系数经验公式计算温度场的准确性,利用温度场测试和有限元计算2种方法对某在役超超临界1000 MW汽轮机中压内缸进汽腔的温度场进行了研究,得到了中压内缸进汽腔各测点温度的实测值,并与额定负荷工况下各测点温度的计算值进行了比较。结果表明:进汽腔内壁的金属温度计算值与实测值拟合较好,经验传热系数设定合理;进汽腔外壁的金属温度计算值比实测值偏高较多,经验传热系数给定值偏小;利用温度场实测值迭代反算传热系数的方法可以用于指导后续的汽轮机设计。In order to verify the accuracy of the heat transfer coefficient empirical formula,measurement and finite element calculation were used to study the temperature field of inlet chamber in the intermediate pressure(IP)inner casing for an in-service ultra-supercritical 1000 MW steam turbine.Temperatures of the points in IP inlet chamber were measured and compared with calculated values under the rated load condition.Results show that the calculated values of metal temperature in IP inlet chamber inner wall fit well with that of measured values,and empirical heat transfer coefficient is set reasonably.The calculated values of metal temperature on IP inlet chamber outer surface are much higher than that of measured values,and the given empirical heat transfer coefficient is relatively small.Subsequent design of steam turbine can be guided by the method of using temperature field measured value to iteratively calculate the heat transfer coefficient.

关 键 词：中压内缸 进汽腔 温度场测试 传热系数 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]