| 660MW超超临界汽轮机高压转子的高温蠕变强度分析 |
| |
| 引用本文： | 邬文睿,王炜哲,蒋普宁,刘应征,陈汉平.660MW超超临界汽轮机高压转子的高温蠕变强度分析[J].动力工程,2009,29(2). |
| |
| 作者姓名： | 邬文睿 王炜哲 蒋普宁 刘应征 陈汉平 |
| |
| 作者单位： | 邬文睿,王炜哲,刘应征,陈汉平,WU Wen-rui,WANG Wei-zhe,LIU Ying-zheng,CHEN Han-ping(上海交通大学机械与动力工程学院,上海,200240);蒋普宁,JIANG Pu-ning(上海汽轮机有限公司,上海,200240)
|
| |
| 摘 要： | 为了研究在高温下某660 MW超超临界汽轮机高压转子的蠕变强度,利用有限元计算方法分析了转子在额定工况下的温度和应力分布,并采用幂率模型和孔洞长大机理预测了该转子在2×105h工作中的蠕变行为,研究结果表明:在额定工况下,转子最高内应力低于屈服极限,处于纯弹性变形状态;转子内大部分区域温度在300～600℃,已进入蠕变温度范围.蠕变与热弹性耦合分析表明:蠕变会引起转子内部应力的重新分布,转子前轴封圆弧段的蠕变应变较高,而且多轴应力对该区域蠕变韧度的影响明显,应当引起足够重视.
|
| 关 键 词： | 超超临界汽轮机 高压转子 高温蠕变 强度 寿命预测 |
Strength Analysis of High-temperature Creep for a 660MW Ultra-Supercritical Steam Turbine High-pressure Rotor |
| |
| WU Wen-rui,WANG Wei-zhe,JIANG Pu-ning,LIU Ying-zheng,CHEN Han-ping.Strength Analysis of High-temperature Creep for a 660MW Ultra-Supercritical Steam Turbine High-pressure Rotor[J].Power Engineering,2009,29(2). |
| |
| Authors: | WU Wen-rui WANG Wei-zhe JIANG Pu-ning LIU Ying-zheng CHEN Han-ping |
| |
| Affiliation: | 1;1.School of Mechanical and Power Engineering;Shanghai Jiaotong University;Shanghai 200240;China;2.Shanghai Turbine Co.;Ltd.;China |
| |
| Abstract: | Finite Element Method was used for analyzing the temperature and stress distributions of the rotor under rated condition,in order to study creep strength of a 660MW ultra super-critical steam-turbine high-pressure rotor under high temperature.The rotor's creep behavior during operation of(200 000) hours was numerically predicted based on power-law model and void-growth mechanism.Results indicate that the highest inner stress of the rotor is lower than the yield limit under rated condition,being the status o... |
| |
| Keywords: | ultra-supercritical steam turbine high-pressure rotor high-temperature creep strength life prediction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
