Nuclear Engineering and Technology

  • 제54권7호
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  • Pages.2540-2549
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  • 2022
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Research on the inlet preswirl effect of clearance flow in canned motor reactor coolant pump

  • Xu, Rui (School of Mechanical Engineering, Shanghai Jiao Tong University) ;
  • Song, Yuchen (School of Mechanical Engineering, Shanghai Jiao Tong University) ;
  • Gu, Xiyao (School of Mechanical Engineering, Shanghai Jiao Tong University) ;
  • Lin, Bin (Shenyang Blower Works Group Saw Electro-Mechanics Import&Export Corporation) ;
  • Wang, Dezhong (School of Mechanical Engineering, Shanghai Jiao Tong University)
  • 투고 : 2020.11.18
  • 심사 : 2022.01.18
  • 발행 : 2022.07.25
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초록

For a pressurized water reactor power plant, the reactor coolant pump (RCP) is a kernel component. And for a canned motor RCP, the rotor system's properties determines its safety. The liquid coolant inside the canned motor RCP fills clearance between the metal shields of rotor and stator, forming a lengthy clearance flow. The influence of inlet preswirl on rotordynamic coefficients of clearance flow in canned motor RCP and their effects on the rotordynamic characteristics of the pump are numerically and experimentally investigated in this work. A quasi-steady state computational fluid dynamics (CFD) method has been used to investigate the influence of inlet preswirl. A vertical experiment rig has also been established for this purpose. Rotordynamic coefficients on different inlet preswirl ratios (IR) are obtained through CFD and experiment. Results show that the cross-coupled stiffness of the clearance flow would change significantly with inlet preswirl, but other rotordynamic coefficients would not change significantly with inlet preswirl. For the case of clearance flow between the stator and rotor cans, influence of inlet preswirl is not so significant as the IR is not large enough.

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과제정보

This work was supported by the National Natural Science Foundation of China (Grant No.52006132) and the Postdoctoral Fund of China.

참고문헌

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