Design and Sealing Performance Verification of Graphite Seal Assembly of CRDM

Luo Qingsong; Xu Huaijing; Tang Baoqiang; Han Jiaxin; He Canyun; Guo Yong; Liu Xin; Ma Zhigang

doi:10.13832/j.jnpe.2022.02.0117

Volume 43 Issue 2

Apr. 2022

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Article Navigation > Nuclear Power Engineering > 2022 > 43(2): 117-121

Luo Qingsong, Xu Huaijing, Tang Baoqiang, Han Jiaxin, He Canyun, Guo Yong, Liu Xin, Ma Zhigang. Design and Sealing Performance Verification of Graphite Seal Assembly of CRDM[J]. Nuclear Power Engineering, 2022, 43(2): 117-121. doi: 10.13832/j.jnpe.2022.02.0117

Citation:

Luo Qingsong, Xu Huaijing, Tang Baoqiang, Han Jiaxin, He Canyun, Guo Yong, Liu Xin, Ma Zhigang. Design and Sealing Performance Verification of Graphite Seal Assembly of CRDM[J]. Nuclear Power Engineering, 2022, 43(2): 117-121. doi: 10.13832/j.jnpe.2022.02.0117

Citation:

Luo Qingsong, Xu Huaijing, Tang Baoqiang, Han Jiaxin, He Canyun, Guo Yong, Liu Xin, Ma Zhigang. Design and Sealing Performance Verification of Graphite Seal Assembly of CRDM[J]. Nuclear Power Engineering, 2022, 43(2): 117-121. doi: 10.13832/j.jnpe.2022.02.0117

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Design and Sealing Performance Verification of Graphite Seal Assembly of CRDM

doi: 10.13832/j.jnpe.2022.02.0117

1.
Wuhan Second Ship Design and Research Institute, Wuhan, 430064, China
2.
BMC Sealing Technology (Suzhou) Co., Ltd., Suzhou, Jiangsu, 215415, China

Received Date: 2021-02-24
Rev Recd Date: 2021-04-03
Publish Date: 2022-04-02

Abstract

Abstract

The pressure housing of CRDM needs to be disassembled many times during the maintenance of control rod drive mechanism (CRDM) and core refueling. In order to solve the leakage of Ω sealing weld of the existing pressure housing and the problem that it can not be disassembled many times, the scheme of pressing graphite ring with nut is adopted in this paper, the compression resilience of graphite ring is used to prevent coolant leakage, and a kind of graphite ring sealing assembly is designed to realize rapid disassembly. The sealing performance of graphite ring sealing assembly is verified by carrying out sealing performance tests such as compression rebound test of sealing ring, stress relaxation test and leakage rate of sealing assembly. The results show that the graphite ring sealing ring assembly designed in this paper meets the design requirements and can achieve sealing performance under high temperature and high pressure environment.
- CRDM,
- Removable sealing structure,
- Graphite ring,
- Graphite seal ring assembly,
- Sealing performance test

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References(9)

References

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