| 电厂再热器小径管焊口的厚度对其应力集中的影响 |
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| 引用本文： | 刘超锋,郝普及,戚俊清,许培援,刘亚莉.电厂再热器小径管焊口的厚度对其应力集中的影响[J].管道技术与设备,2006(3):25-26,29. |
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| 作者姓名： | 刘超锋 郝普及 戚俊清 许培援 刘亚莉 |
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| 作者单位： | 1. 郑州轻工业学院材料与化学工程学院,河南,郑州,450002
2. 鹤壁炼业(集团)有限责任公司鸿运玻璃纤维厂,河南,鹤壁,458008 |
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| 摘 要： | 介绍了电站锅炉再热器焊区渗漏的3种原因，即设计不当、材料性能欠佳和运行工况恶劣．指出最重要的原因是结构设计不当。结合某电厂锅炉再热器集箱小径管的焊口，分析了采用数值解法来求解该力学模型的必要性。给出了数值解法计算模型，研究了焊口厚度对焊口应力集中系数的影响。结果表明，焊口的厚度的增加有利于降低应力集中。
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| 关 键 词： | 电站 锅炉 再热器小径管 焊口厚度 应力集中 数值分析 |
| 文章编号： | 1004-9614（2006）03-0025-02 |
| 收稿时间： | 2005-10-24 |
| 修稿时间： | 2005-10-242006-03-22 |
Effect of Different Welding Seam Thickness of Stress Intensity of Small-Diameter Tube on Reheater in Coal-burning Thermo-Electric Factory |
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| LIU Chao-feng,HAO Pu-ji,QI Jun-qing,XU Pei-yuan,LIU Ya-li.Effect of Different Welding Seam Thickness of Stress Intensity of Small-Diameter Tube on Reheater in Coal-burning Thermo-Electric Factory[J].Pipeline Technique and Equipment,2006(3):25-26,29. |
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| Authors: | LIU Chao-feng HAO Pu-ji QI Jun-qing XU Pei-yuan LIU Ya-li |
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| Institution: | 1.School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China; 2.Hongyun Class Fiber Factory, Hebi Uinirg(Group |
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| Abstract: | Three reasons for the leakage of welding parts of reheater were introduced. Incorrect design was most important reason. The welding parts of small-diameter tube of reheater in a thermo-electric factory were calculated with numerical methods. The effection of thickness of welding parts on the stress intensity factors were researched. The result shows that stress intensity factor of calculated object decreases with increase of thickness of welding seam. |
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| Keywords: | thermo-electric factory boiler small diameter tube of reheater thickness of welding seam stress intensity numerical analysis |
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