燃料组件导向管事故工况应力计算方法研究

齐欢欢; 沈平川; 吴万军; 姜乃斌; 黄旋

doi:10.3879/j.issn.1000-0887.2016.05.009

燃料组件导向管事故工况应力计算方法研究

doi: 10.3879/j.issn.1000-0887.2016.05.009

中国核动力研究设计院核反应堆系统设计技术重点实验室, 成都 610041

详细信息

作者简介:
齐欢欢（1983—），女，工程师，硕士(通讯作者. E-mail: qihuan73@126.com).

中图分类号: TL352
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- 被引次数: 0
出版历程
- 收稿日期: 2015-10-29
- 修回日期: 2015-11-17
- 刊出日期: 2016-05-15

A Stress Calculation Method for Guide Thimbles in Fuel Assemblies Under Accident Conditions

Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China, Chengdu 610041, P.R.China

摘要

摘要: 通过反应堆动力分析计算出堆芯上下板和围板的位移时程作为进行燃料组件地震加LOCA动力分析的输入.建立燃料组件横向排模型，进行燃料组件事故动力响应分析，得到燃料组件的变形等内容，以此作为导向管应力分析的基础.结合排模型中燃料组件的简化方法以及导向管在燃料组件中的结构分布形式，对导向管的薄膜应力以及弯曲应力的算法进行了研究，推导出导向管薄膜应力、弯曲应力的计算方法，对采用该算法进行应力分析需要注意的问题进行了阐述，给出导向管进行安全评定的方法.对导向管应力分析及评定的流程进行总结并编程实现，并以某电厂为实例进行了导向管应力分析计算.
- 燃料组件 /
- 导向管 /
- 事故工况 /
- 应力计算方法
Abstract: Through the dynamic analysis of reactor systems, the displacementtime histories of upper/lower core plates and core barrels were obtained. The time history was then treated as the input for seismic and LOCA analysis of the fuel assembly. Then the horizontal row model of the fuel assembly was built for the dynamic analysis under accident conditions. From this analysis, the displacements of the fuel assembly was got as the input for the guide thimble stress calculation. According to the simplified method for the horizontal row model and the guide thimble distribution in the fuel assembly, the calculation method for the membrane stress and bending stress was deduced. The issues in the use of this method were described. The process of stress analysis and evaluation for the guide thimbles was schemed and realized through programming. With the presented method, stress analysis and evaluation of the guide thimbles in one power plant were effectively carried out as an example.
- fuel assembly /
- guide thimble /
- accident condition /
- stress calculation method

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参考文献(8)

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