Comparative analysis of internal flow characteristics of LBE-cooled fast reactor main coolant pump with different structures under reverse rotation accident conditions

Yonggang Lu; Xiuli Wang; Qiang Fu; Yuanyuan Zhao; Rongsheng Zhu

doi:https://doi.org/10.1016/j.net.2021.01.015

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자료유형: 학술저널

저자정보: Yonggang Lu (Jiangsu University) Xiuli Wang (National Research Center of Pumps, Jiangsu University) Qiang Fu (National Research Center of Pumps, Jiangsu University) Yuanyuan Zhao (National Research Center of Pumps, Jiangsu University) Rongsheng Zhu (National Research Center of Pumps, Jiangsu University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제7호

발행연도: 2021.7

수록면: 2,207 - 2,220 (14page)

DOI: https://doi.org/10.1016/j.net.2021.01.015

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Lead alloy is used as coolant in Lead-based cooled Fast Reactor (LFR). The natural characteristics of leadalloy are combined with the simple structural design of LFR. This constitutes the inherent safety characteristicsof LFR. The main work of this paper is to take the main coolant pump (MCP) in the lead-cooledfast reactor (LFR) as the research object, and to study the flow pattern distribution of the internal flowfield under the reverse rotation pump condition, the reverse rotation positive-flow braking condition andthe reverse rotation negative-flow braking condition. In this paper, the double-outlet volute type and thespace guide vane are selected as the potential designs of the CLEAR-I MCP. In this paper, the CFD methodis used to study the potential reverse accident of the MCP. It is found that the highest flow velocity in theimpeller appears at the impeller outlet, and the Q-H curves of the two design programs basically coincide. The space guide vane type MCP has better hydraulic performance under the reverse rotationpositive-flow condition, the Q-H curves of the two designs gradually separate with increasing flow rate,and the maximum flow velocity inside the space guide vane type MCP is obviously lower than that of thedouble-outlet volute type. For the reverse rotation test of MCP, only the condition of the forward rotatingpump of the main coolant pump is tested and verified. For the simulation of the MCP in LBE medium, itproved that the turbulence model and basic settings selected in the simulation are reliable.

#LFR #Main coolant pump #CLEAR-I #Reverse working condition #Turbulent kinetic energy

참고문헌 (31)

참고문헌 신청

M. Ferrini / 2016 / Design by theoretical and CFD analyses of a multi-blade screw pump evolving liquid lead for a Generation IV LFR / Nucl. Eng. Des 297:276~290

K. Wang / 2017 / Integration between supercritical CO2 Brayton cycles and molten salt solar power towers : a review and a comprehensive comparison of different cycle layouts / Appl. Energy 195:819~836

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