| 600MW汽轮机转子热应力及寿命损耗分析研究 |
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| 引用本文： | 杨志磊,王海宁,杨承刚,徐鸿. 600MW汽轮机转子热应力及寿命损耗分析研究[J]. 汽轮机技术, 2011, 53(5) |
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| 作者姓名： | 杨志磊 王海宁 杨承刚 徐鸿 |
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| 作者单位： | 华北电力大学能源动力与机械工程学院,北京,102206 |
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| 摘 要： | 以某电厂600MW超超临界机组汽轮机转子为研究对象,运用ansys有限元软件建立二维模型,计算出不同平均温升率下机组启动时转子热应力值。与理论公式通过最小二乘法进行曲线拟合,从而确定无中心孔转子的时间修正因子和形状因子。然后根据低周疲劳曲线计算出转子的寿命损耗。鉴于波动、间歇式新能源的并网,能够指导运行人员,通过温升率和温升量的调节,在安全的前提下,提高汽轮机组负荷变动能力和调峰能力。
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| 关 键 词： | 超超临界 寿命损耗 热应力 调峰 |
Analysis of 600MW Turbine Rotor Thermal Stress and Loss of Life |
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| YANG Zhi-lei,WANG Hai-ning,YANG Cheng-gang,XU Hong. Analysis of 600MW Turbine Rotor Thermal Stress and Loss of Life[J]. Turbine Technology, 2011, 53(5) |
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| Authors: | YANG Zhi-lei WANG Hai-ning YANG Cheng-gang XU Hong |
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| Affiliation: | YANG Zhi-lei,WANG Hai-ning,YANG Cheng-gang,XU Hong(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China) |
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| Abstract: | This paper takes some 600MW ultra-supercritical turbine generating rotor as the research object.It uses finite element software to get a two-dimensional model,then thermal stress value of turbine rotor can be calculated under different temperature rate when unit start-up.According to theoretical formula,it makes a curve-fitting by least square method to determine time-modifying factor and form factor of rotor which is without a center hole.So that rotor life loss percentage will be obtained on basis of low-... |
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| Keywords: | ultra supercritical fatigue damage thermal stress peak-load |
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