Avoiding sealing failure of flanged connection for tubes made of dissimilar materials subjected to elevated temperature
文献类型：期刊论文
| 作者 | Li, QM; Zhou, C; Tian, J; Fu, Y; Zou, Y; Wang, NX |
| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2019 |
| 卷号 | 30期号:1页码:— |
| 关键词 | BOLTED CONNECTION RPV |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-018-0540-8 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Carbonic composite materials and ceramics appear to be excellent structural materials for parts subjected to very high temperatures in molten salt reactors (MSRs), in which the reactor core outlet temperature is normally above 700 degrees C. Because of the high temperature, there are major challenges in the sealing of flanged connections for tubes made of alloys and nonmetallic materials. In this study, an improved method for sealing bolted flange connections for tubes made of dissimilar materials at high temperature is analyzed. The study focuses on the compensation mechanism for the difference in thermal expansion between the bolts and the flanges. An angle is introduced for the sealing surface in the flanged connection to provide effective sealing. The arctangent of the angle is the ratio of the thickness between the theoretical core of the sealing surface and the outside end face of the flange to the distances between the axis of the flanged joint and the theoretical core of the sealing surface of the flange; the sealing surface of the flange, which is made of the same material as the fastening assemblies, faces the fastening assemblies. To ensure effective sealing, the frictional coefficient between the two sealing surfaces should not exceed the tangent of the angle. This result does not agree well with the solution given by previous researchers. Further, in the modified flanged connection, the compression of each bolt in the clamped condition is increased to maintain the compaction force unchanged without increasing the number of bolts on the flanged joint. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31484]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, QM,Zhou, C,Tian, J,et al. Avoiding sealing failure of flanged connection for tubes made of dissimilar materials subjected to elevated temperature[J]. NUCLEAR SCIENCE AND TECHNIQUES,2019,30(1):—. |
| APA | Li, QM,Zhou, C,Tian, J,Fu, Y,Zou, Y,&Wang, NX.(2019).Avoiding sealing failure of flanged connection for tubes made of dissimilar materials subjected to elevated temperature.NUCLEAR SCIENCE AND TECHNIQUES,30(1),—. |
| MLA | Li, QM,et al."Avoiding sealing failure of flanged connection for tubes made of dissimilar materials subjected to elevated temperature".NUCLEAR SCIENCE AND TECHNIQUES 30.1(2019):—. |
入库方式： OAI收割
来源：上海应用物理研究所
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