Study on Calculation Method of Crack Leakage Rate of Valve Sealing Surface

Cao Yuming; Zhao Gang; Fang Zheng; Li Yuhuan; Zhou Du; Liu Wenshi; Wang Zheng

doi:10.13832/j.jnpe.2025.01.0136

Volume 46 Issue 1

Feb. 2025

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Article Navigation > Nuclear Power Engineering > 2025 > 46(1): 136-142

Cao Yuming, Zhao Gang, Fang Zheng, Li Yuhuan, Zhou Du, Liu Wenshi, Wang Zheng. Study on Calculation Method of Crack Leakage Rate of Valve Sealing Surface[J]. Nuclear Power Engineering, 2025, 46(1): 136-142. doi: 10.13832/j.jnpe.2025.01.0136

Citation:

Cao Yuming, Zhao Gang, Fang Zheng, Li Yuhuan, Zhou Du, Liu Wenshi, Wang Zheng. Study on Calculation Method of Crack Leakage Rate of Valve Sealing Surface[J]. Nuclear Power Engineering, 2025, 46(1): 136-142. doi: 10.13832/j.jnpe.2025.01.0136

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Study on Calculation Method of Crack Leakage Rate of Valve Sealing Surface

doi: 10.13832/j.jnpe.2025.01.0136

1.
Dalian University of Technology, Dalian, Liaoning, 116000, China
2.
China Nuclear Power Operations Co., Ltd., Shenzhen, Guangdong, 518000, China

Received Date: 2024-03-22
Rev Recd Date: 2024-05-09
Publish Date: 2025-02-15

Abstract

Abstract

During the operation of nuclear power system, cracks may occur on the valve sealing surface due to thermal load and fatigue load, which may lead to leakage and even more serious consequences. Therefore, studying the leakage rate of cracks on the valve sealing surface will improve the safety of the reactor. Based on the Henry-Fauske critical flow calculation model and considering the resistance during the leakage process, a set of calculation methods for calculating the crack leakage rate of the valve sealing surface under different operating conditions (high temperature water and saturated steam) is developed in this paper. Finally, the experimental platform of crack leakage rate measurement is built according to the actual operating conditions, and the leakage rate measured by experiment is compared with the leakage rate calculated by the theoretical model to verify the accuracy of the leakage rate calculation method proposed in this paper. Through the comparison of experiment and theory, the calculation method of crack leakage rate proposed in this paper can predict the crack leakage rate of valve sealing surface more accurately, and has good practical application value.
- Nuclear power system,
- Valve sealing surface,
- Crack,
- Leakage rate,
- Calculation method,
- Leakage rate measurement

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References(14)

References

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