Numerical Study on the Flow Characteristics of the Parallel Main Pumps of the Vertical Canned Motor

Zhou Xingzhu; Song Yu; Yin Junlian; Wang Dezhong; Xia Shuan; Feng Lei

doi:10.13832/j.jnpe.2022.02.0212

Volume 43 Issue 2

Apr. 2022

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Article Navigation > Nuclear Power Engineering > 2022 > 43(2): 212-218

Zhou Xingzhu, Song Yu, Yin Junlian, Wang Dezhong, Xia Shuan, Feng Lei. Numerical Study on the Flow Characteristics of the Parallel Main Pumps of the Vertical Canned Motor[J]. Nuclear Power Engineering, 2022, 43(2): 212-218. doi: 10.13832/j.jnpe.2022.02.0212

Citation:

Zhou Xingzhu, Song Yu, Yin Junlian, Wang Dezhong, Xia Shuan, Feng Lei. Numerical Study on the Flow Characteristics of the Parallel Main Pumps of the Vertical Canned Motor[J]. Nuclear Power Engineering, 2022, 43(2): 212-218. doi: 10.13832/j.jnpe.2022.02.0212

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Numerical Study on the Flow Characteristics of the Parallel Main Pumps of the Vertical Canned Motor

doi: 10.13832/j.jnpe.2022.02.0212

1.
School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
2.
Shanghai Nuclear Engineering Research and Design Institute, Shanghai, 200233, China

Received Date: 2021-03-15
Accepted Date: 2021-08-26
Rev Recd Date: 2021-08-26
Publish Date: 2022-04-02

Abstract

Abstract

Taking the reactor main coolant circulation pump (referred to as the main pump) of the vertical canned motor with a scale factor of 1:4 as the research object, two kinds of geometric models with two counter-rotating parallel main pumps (model 1) and two co-rotating parallel main pumps (model 2) are established. Using computational fluid dynamics (CFD) method to calculate the steady-state operation of the internal flow field of the two models of parallel main pumps, from the external characteristics of the main pumps, the inlet flow characteristics, the inflow quality, and the pressure distribution in the pipe, the comparative analysis of model 1 and model 2 is conducted. The results show that the performance of the main pumps A and B in model 1 are basically the same; the relative deviation of the flow rate of the main pumps A and B in model 2 is basically within 0.8%, the maximum value reaches 1.69%, the relative deviation of head is stable within 1%; the maximum relative deviation of the efficiency and shaft power reaches 6% and 8% respectively; compared with model 1, model 2 has better flow stability, higher inflow quality, and lower pressure distribution in the pipe, which is conducive to the long-term operation of the equipment.
- Main pump of the vertical canned motor,
- Computational fluid dynamics (CFD),
- Parallel main pump,
- Flow field distribution

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References

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