Research of Margin Matching between Steam Generator and Steam Turbine in Nuclear Power Plant

Zhao Qingsen; Wang Shiyong

doi:10.13832/j.jnpe.2021.06.0174

Volume 42 Issue 6

Dec. 2021

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Zhao Qingsen, Wang Shiyong. Research of Margin Matching between Steam Generator and Steam Turbine in Nuclear Power Plant[J]. Nuclear Power Engineering, 2021, 42(6): 174-178. doi: 10.13832/j.jnpe.2021.06.0174

Citation:

Zhao Qingsen, Wang Shiyong. Research of Margin Matching between Steam Generator and Steam Turbine in Nuclear Power Plant[J]. Nuclear Power Engineering, 2021, 42(6): 174-178. doi: 10.13832/j.jnpe.2021.06.0174

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Research of Margin Matching between Steam Generator and Steam Turbine in Nuclear Power Plant

doi: 10.13832/j.jnpe.2021.06.0174

Zhao Qingsen^1
,,
Wang Shiyong²

1.
Suzhou Nuclear Power Institute, Suzhou, Jiangsu, 215004, China
2.
China Nuclear Power Engineering Company Ltd.(Shenzhen), Shenzhen, Guangdong, 518000, China

Received Date: 2020-11-09
Rev Recd Date: 2021-04-16
Publish Date: 2021-12-09

Abstract

Abstract

Some of the nuclear power units of PWR newly put into operation in China have suffered from sharp shaking of the main steam control valve, slow pressure drop of new steam and other problems, which have certain impacts on the safety and economy of the unit. Through the comparison of the design parameters and the test data, and using the heat transfer calculation model to analyze, this study found that the design margin of 55/19B steam generator was lower than the similar 60F steam generator, and was also lower than the usual steam pressure margin of 1.6×10⁵ Pa. The new steam pressure of the steam generator, the main steam control valve and the flow area of the steam turbine governing stage shall be comprehensively matched at the beginning of the design, especially the valves with linear regulation characteristics in the opening range of more than 70% shall be selected, so as to ensure the reliability and economy of the nuclear power unit throughout its lifetime.
- Steam generator,
- Steam turbine,
- Main steam control valve,
- Margin

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References(16)

References

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