| 汽轮机低压叶片断裂原因分析 |
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| 引用本文： | 孟炜,盛德仁,陈坚红,李蔚,任浩仁.汽轮机低压叶片断裂原因分析[J].制冷空调与电力机械,2004,25(3):69-71. |
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| 作者姓名： | 孟炜 盛德仁 陈坚红 李蔚 任浩仁 |
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| 作者单位： | 1. 浙江省能源集团有限公司,浙江,杭州,310006
2. 浙江大学电厂热能动力及自动化研究所,浙江,杭州,310027 |
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| 摘 要： | 针对国产300MW汽轮机低压缸扭叶片发生断裂失效事故进行研究分析;通过对扭叶片有限元计算、叶片振型模态实测,分析该叶片各阶自振频率,其计算结果和模态实测值基本吻合,为事故分析提供理论依据;对叶片材质元素成分测试,并着重对叶片实际运行工况及承受的各种可能的激振力分析,探求导致该级扭叶片疲劳断裂的真实原因,为同类型机组的安全、可靠运行提供一种借鉴作用和分析方法.
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| 关 键 词： | 自振频率 有限元法 模态实测 疲劳断裂 |
| 文章编号： | 1006-8449(2004)03-0069-03 |
| 修稿时间： | 2004年2月16日 |
Analysis of Turbine's Blade Cracks in Low-Pressure Cylinder |
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| MENG Wei,SHENG De-ren,CHEN Jian-hong,LI Wei,REN Hao-ren Zhejiang Provincial Energy Group Company Ltd,Hangzhou ,China Institute of Power Plant Thermal Energy Engineering & Automation,Zhejiang University Hangzhou,China.Analysis of Turbine''''s Blade Cracks in Low-Pressure Cylinder[J].Refrigeration Air Conditioning & Electric Power Machinery,2004,25(3):69-71. |
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| Authors: | MENG Wei SHENG De-ren CHEN Jian-hong LI Wei REN Hao-ren Zhejiang Provincial Energy Group Company Ltd Hangzhou China Institute of Power Plant Thermal Energy Engineering & Automation Zhejiang University Hangzhou China |
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| Affiliation: | MENG Wei,SHENG De-ren,CHEN Jian-hong,LI Wei,REN Hao-ren Zhejiang Provincial Energy Group Company Ltd,Hangzhou 310006,China Institute of Power Plant Thermal Energy Engineering & Automation,Zhejiang University Hangzhou,310027,China |
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| Abstract: | According to the blade cracks of low pressure cylinder of Home-made 300MW turbine, this article
analyses the self-oscillation frequency of blade in every stage by the modal measurement and finite element calculation.
It's obvious that the results gotten from the experiment and calculation are matched well in main self-oscillation fre-
quency and mode, which prove that finite calculation and modal experiment data are convinced and useful to the blade
cracks analysis. Blade's material and exciting-force of working blade are also detected, which helps to confirm the real
reason of blade cracks and analyze the secure working turbine set. |
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| Keywords: | self-oscillation frequency finite element modal measurement fatigue cracks |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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