• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2018, Vol. 54 ›› Issue (7): 176-183.doi: 10.3901/JME.2018.07.176

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High Efficiency Hydraulic Model Development of CAP1400 Canned Nuclear Reactor Coolant Pump

ZHOU Fangming, XU Shengli, WANG Xiaofang, SUN Tao, WANG Wei   

  1. School of Energy and Power Engineering, Dalian University of Technology, Dalian 116000
  • Received:2017-04-12 Revised:2017-12-24 Online:2018-04-05 Published:2018-04-05

Abstract: The CAP1400 canned nuclear reactor coolant pump as the last and most difficult major equipment in advanced third generation pressurized water reactor nuclear power plant has been domestic developed. Impeller and vane diffuser are the key hydraulic components in the pump. Hydraulic design is a topic in the scientific researching. Based on previous related research, the high efficiency hydraulic model (on a scale 1:2.5) is designed. And the specific speed of mix-flow impeller is almost 105. The hydraulic mode establishing, parametric design, optimization with CFD, model testing and performance analysis is discussed. Hydraulic model efficiency is 84.92% at design point, performance curves changing stably, high efficiency in operating range, good cavitation performance; and prototype scaled efficiency is 88.3% at design point using affinity law. The hydraulic model becomes one of the two hydraulic components designs in the CAP1400 canned nuclear reactor coolant pump major special project. The hydraulic model becomes an important reference and primary technology accumulation for subsequent hydraulic components design and engineering application.

Key words: canned nuclear reactor coolant pump, efficiency, hydraulic design and CFD, impeller and diffuser, test

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