Analysis and Research on the Influence of Asymmetric Pumping Chamber on the Performance of CAP1400 Nuclear Coolant Pump

Yan Yongqi; Lu Yeming; Liu Haoran; Wang Xiaofang; Zhang Zhigang; Sha Long

doi:10.13832/j.jnpe.2022.04.0018

Volume 43 Issue 4

Aug. 2022

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Yan Yongqi, Lu Yeming, Liu Haoran, Wang Xiaofang, Zhang Zhigang, Sha Long. Analysis and Research on the Influence of Asymmetric Pumping Chamber on the Performance of CAP1400 Nuclear Coolant Pump[J]. Nuclear Power Engineering, 2022, 43(4): 18-24. doi: 10.13832/j.jnpe.2022.04.0018

Citation:

Yan Yongqi, Lu Yeming, Liu Haoran, Wang Xiaofang, Zhang Zhigang, Sha Long. Analysis and Research on the Influence of Asymmetric Pumping Chamber on the Performance of CAP1400 Nuclear Coolant Pump[J]. Nuclear Power Engineering, 2022, 43(4): 18-24. doi: 10.13832/j.jnpe.2022.04.0018

Citation:

Yan Yongqi, Lu Yeming, Liu Haoran, Wang Xiaofang, Zhang Zhigang, Sha Long. Analysis and Research on the Influence of Asymmetric Pumping Chamber on the Performance of CAP1400 Nuclear Coolant Pump[J]. Nuclear Power Engineering, 2022, 43(4): 18-24. doi: 10.13832/j.jnpe.2022.04.0018

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Analysis and Research on the Influence of Asymmetric Pumping Chamber on the Performance of CAP1400 Nuclear Coolant Pump

doi: 10.13832/j.jnpe.2022.04.0018

1.
Key Laboratory of Marine Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, Liaoning, 116024, China
2.
Beijing Power Machinery Research Institute, Beijing, 100000, China
3.
Shenyang Blower Group Co., Ltd., Shenyang, 110000, China

Received Date: 2021-08-18
Rev Recd Date: 2021-09-14

Available Online: 2022-08-11

Publish Date: 2022-08-04

Abstract

Abstract

As the boundary of the nuclear coolant pump, the pumping chamber not only bears the pressure, but also is the only bridge between the guide vane flowing in the circumferential direction and the unidirectional flow pipeline. In order to explore the influence of pumping chamber on the performance of the whole machine, a design method for asymmetric pumping chamber of nuclear coolant pump is proposed based on CAP1400’s 1:2.5 scale model, and four kinds of asymmetric models with different geometric dimensions are designed. With the computational fluid dynamics (CFD) numerical method, the internal flow field, external characteristics and transient load information of the full three-dimensional model of the nuclear coolant pump with orifice ring clearance are obtained. Through comparative analysis, the following conclusions are obtained: four asymmetric pumping chamber models reduce the radial load at the upper cover plate by more than 60%, and reduce the main frequency amplitude of the impeller and the total radial load by more than 13%; While ensuring the obvious improvement of radial load, it can also effectively improve the pump efficiency and head. The former is more obvious, with a lifting range of 0.57% to 0.83%.
- Nuclear coolant pump,
- Asymmetric,
- Pumping chamber,
- CAP1400,
- Radial load

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References(13)

References

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