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投稿时间：2012-03-12
投稿时间：2012-03-12
中文摘要: 以某125 MW汽轮机转子为研究对象,使用有限元软件ANSYS计算转子冷态启动下的温度场与应力场,通过改变加载条件,分析转子应力的主要影响因素。结果表明:在启动初始阶段热应力起主导作用,约占73%～78.9%;蒸汽压应力起到一定的抵消作用,约占0.6%～3.3%;离心应力约占23.4%～27.6%。其他应力可以忽略不计。在机组稳定阶段,离心力占据主要部分,约占51.2%～51.4%。
Abstract:Taking a 125MW steam turbine rotor as the research object,ANSYS is used to calculate the temperature field and stress field during cold start.Then the main influence factors on stress of steam turbine rotor can be obtained by comparing calculation results under different conditions.The results show that the thermal stress in the initial stages is about 73 percent to 78.9 percent.And the pressure stress can partially offset the total stress during the start process and the percentage is about 0.6 percent to 3.3 percent.The centrifugal force is about 23.4 percent to 27.6 percent,and the other stress can all be ignored.In the stable stages,the centrifugal force occupies the main part,accounting for about 51.2 percent to 51.4 percent.
文章编号：20120310 中图分类号： 文献标志码：
基金项目:上海市科学技术委员会项目(09111100600);上海市教育委员会重点学科(第5期)(J51304)
| 作者 | 单位 | |
| 王俊瑜 | 上海电力学院 | wangjiayu_1983@163.com |
| 纪冬梅 | 上海电力学院 | |
| 姚秀平 | 上海电力学院 | |
| 杨宇 | 上海发电设备成套设计研究院 | |
| 史进渊 | 上海发电设备成套设计研究院 |
引用文本：
王俊瑜,纪冬梅,姚秀平,等.汽轮机启动过程中转子应力的主要影响因素[J].上海电力大学学报,2012,28(3):238-241,246.
WANG Jun-yu,JI Dong-mei,YAO Xiu-ping,et al.Main Influence Factors of Turbine Rotor Stress During Startup[J].Journal of Shanghai University of Electric Power,2012,28(3):238-241,246.
王俊瑜,纪冬梅,姚秀平,等.汽轮机启动过程中转子应力的主要影响因素[J].上海电力大学学报,2012,28(3):238-241,246.
WANG Jun-yu,JI Dong-mei,YAO Xiu-ping,et al.Main Influence Factors of Turbine Rotor Stress During Startup[J].Journal of Shanghai University of Electric Power,2012,28(3):238-241,246.