大型汽轮机停机状态下进水事故数值仿真研究  

Numerical Simulation for Accidents in Case of Cylinder Water Intrusion of Large-scale Steam Turbine During Stopped Status

作　　者：韩彦广[1] 程贵兵[1] 鲁录义[2] 

机构地区：[1]国网湖南省电力公司电力科学研究院,长沙410007 [2]华中科技大学能源与动力工程学院,武汉430074

出　　处：《汽轮机技术》2017年第2期134-136,共3页Turbine Technology

摘　　要：汽轮机在停机状态下容易引发进水事故,事故可能导致汽轮机动静部件碰摩、大轴弯曲等后果。通过对某600MW汽轮机高中压缸进水工况进行有限元分析,研究其进水后温度场及变形随时间的变化,重点讨论转子和汽缸相对间隙的变化。研究结果可为大型汽轮机汽缸进水后的修复工作提供技术支持。Severe accidents may occur in case of water intrusion into turbines at stopped status, and may result in turbine parts rubbing movement, shaft bending and other consequences. Based on the finite element analysis of hydraulic conditions in high and medium pressure cylinder of the 600MW steam turbine, this paper analyzes the changes of the temperature field and its deformation with time after the influent, focusing on the changes of relative gap between the rotor and the cylinder. Results of this study can provide technical support for the restoration of Large Steam Turbine cylinder after flooding.

关 键 词：汽轮机 进水 有限元分析 温度场 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]