| 采用热流法计算汽轮机转子表面热应力 |
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| 引用本文： | 吕智强,韩万金. 采用热流法计算汽轮机转子表面热应力[J]. 动力工程, 2005, 25(6): 765-769 |
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| 作者姓名： | 吕智强 韩万金 |
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| 作者单位： | 哈尔滨工业大学,能源学院,哈尔滨,150001 |
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| 摘 要： | 通过对热量流动的分析,推导出汽轮机转子温度分布的表达式。同时根据温度分布,考虑汽轮机转子表面的应力集中,给出转子表面的热应力计算公式。最后通过典型机组的冷态启动计算,分析了温度场和热应力场的变化,评估低周疲劳损伤,并提出了运行控制的要求。图7参15。
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| 关 键 词： | 动力机械工程 汽轮机转子 热流 应力集中 热应力 |
| 文章编号： | 1000-6761（2005）06-0765-05 |
| 收稿时间： | 2005-09-26 |
| 修稿时间： | 2005-09-26 |
Calculation of Thermal Stress on Steam Turbine Rotor Surfaces by the Heat Flux Method |
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| LU Zhi-qiang,HAN Wan-jin. Calculation of Thermal Stress on Steam Turbine Rotor Surfaces by the Heat Flux Method[J]. Power Engineering, 2005, 25(6): 765-769 |
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| Authors: | LU Zhi-qiang HAN Wan-jin |
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| Affiliation: | School of Energy Sources, Harbine University of Technology, Harbine 150001, China |
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| Abstract: | Expressions of temperature distribution in steam turbine rotors are being derived by thermal flux analysis and formulas,which take stress concentration into consideration,are presented for calculating the thermal stress on the (rotor's) surface.In the conclusion,the low cycle fatigue life expenditure incurred by a typical turbine during a cold start is being calculated and operational control requirements proposed,after having first calculated the rotor's temperature field and the thermal stress distribution field.Figs 7 and refs 15. |
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| Keywords: | power and mechanical engineering steam turbine rotor heat flux stress concentration thermal stress |
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