Analysis of Influencing Factors of Control Rod Downward Motion Characteristics

Li Tian; Wei Bingqian; Li Yan; Yang Zhendong; Li Shishuang

doi:10.13832/j.jnpe.2022.01.0127

Volume 43 Issue 1

Feb. 2022

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Li Tian, Wei Bingqian, Li Yan, Yang Zhendong, Li Shishuang. Analysis of Influencing Factors of Control Rod Downward Motion Characteristics[J]. Nuclear Power Engineering, 2022, 43(1): 127-132. doi: 10.13832/j.jnpe.2022.01.0127

Citation:

Li Tian, Wei Bingqian, Li Yan, Yang Zhendong, Li Shishuang. Analysis of Influencing Factors of Control Rod Downward Motion Characteristics[J]. Nuclear Power Engineering, 2022, 43(1): 127-132. doi: 10.13832/j.jnpe.2022.01.0127

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Analysis of Influencing Factors of Control Rod Downward Motion Characteristics

doi: 10.13832/j.jnpe.2022.01.0127

1.
Xi’an University of Technology, Xi’an, 710500, China
2.
China Institute of Atomic Energy, Beijing, 102413, China

Received Date: 2020-11-27
Rev Recd Date: 2021-02-24
Publish Date: 2022-02-01

Abstract

Abstract

Liquid suspension passive shutdown technology is one of the research hotspots in the field of nuclear reaction safety in recent years. It is important to study the downward motion characteristics of control rods for the safe operation of nuclear power plants. Two typical unprotected transient loss of flow accidents (ULOF) were selected as the basis to design various working conditions for model experiments. Combined with the experimental data, the force analysis of the downward motion of the control rod was carried out to obtain the time-history change of its resistance. The influence of outlet aperture and initial circumferential position on the time history and buffering effect of the control rod was analyzed by the control variable method, and the function relationship between resistance coefficient and Reynolds number was obtained. It can provide the basis for optimizing the structure of control rod assembly and the selection of resistance coefficient in the study of the downward motion force of control rod.
- Control rod assembly,
- Rod dropping process,
- Fluid resistance,
- Sensitivity analysis

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References(17)

References

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