The Reactor Coolant Pump runs as the only rotating part in nuclear power plant primary circuit system, and its operating environment is of liquid environment. In order to accurately calculate the vibration mode of the Reactor Coolant Pump impeller in the liquid environment to ensure the high reliability of the Reactor Coolant Pump, the influence of water boundary effect and high temperature and pressure environment on the Reactor Coolant Pump impeller mode under real operating conditions were studied. The simplified disk model was analyzed firstly, and results show that the wet mode frequency of each were stage of the disk is about 25% lower than the dry mode frequency, and numerical results of the disk mode are in agreement with the experimental results and are verified by disk experiments successfully. Then CAP1400 Reactor Coolant Pump impeller reduced-scale hydraulic model was taken to study the influence of dive depth and radial distance and high temperature and pressure on the impeller modal characteristics. Results show that the impeller wet mode frequency decreases significantly compared with the dry mode; natural frequency decreases with the increase of dive depth and increases with the increase of radial distance. The impeller natural frequency at high temperature and pressure has increased compared with that at normal temperature and pressure.
WANG Ming-Yang,WANG Xiao-Fang-*,ZHOU Lu-Sheng et al. Influence of boundary effect and high temperature and pressure on Reactor Coolant Pump mode[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(6): 668-672.
张红军. 世界核电技术发展新趋势探讨[J]. 中国核工业, 2016(8):44-45.
ZHANG Hongjun. Discussion on the new trend of nuclear power technology in the world [J]. China nuclear industry, 2016(8): 44-45.(in Chinese)
XU Xiaojie, CHENG Tansi.China's nuclear power deve-lopment trends and policy options [J]. China energy, 2015, 37(1): 5-9.(in Chinese)
ZENG M, WANG S, DUAN J, et al. Review of nuclear power development in China: environment analysis, historical stages, development status, problems and countermeasures[J]. Renewable & sustainable energy reviews, 2016, 59:1369-1383.
KRAMER M R, LIU Z, YIN L Y. Free vibration of cantilevered composite plates in air and in water[J]. Composite structures, 2013, 95:254-263.
ESCALER X, TORRE O D L, GOGGINS J. Experime-ntal and numerical analysis of directional added mass effects in partially liquid-filled horizontal pipes[J]. Journal of fluids & structures, 2017, 69:252-264.
陈东阳, ABBAS L K, 王国平,等. 流场环境对柔性立管湿模态的影响[J]. 哈尔滨工程大学学报, 2017, 38(10):1587-1594.
CHEN Dongyang, ABBAS L K, WANG Guoping, et al. Influence of flow field environment on wet modal vibration of flexible riser[J]. Journal of Harbin Enginee-ring University, 2017, 38(10):1587-1594.(in Chinese)
LI Xiaojun, ZHU Hanhua, XU Haoran, et al. Influence of aqueous medium on the vibration modality of shaft-propeller system in ship[J]. Journal of Wuhan Uni-versity of Technology(transportation science & engineering), 2017, 41(6):1005-1012.(in Chinese)
LIU Houlin, BAI Yu, DONG Liang, et al. Modal analy-sis of metallurgical hot water circulating pump at high temperature and pressure [J]. Journal of Jiangsu University(natural science edition), 2015, 36(2):159-164.(in Chinese)
EGUSQUIZA E, VALERO C, LIANG Q, et al. Fluid added mass effect in the modal response of a pump-turbine impeller[C]// ASME 2009 international design engineering technical conferences and computers and information in engineering conference,2009:715-724.
TRIVEDI C, CERVANTES M J. Fluid-structure intera-ctions in francis turbines: a perspective review[J]. Renewable & sustainable energy reviews, 2017, 68:87-101.
AN S, FALTINSEN O M. An experimental and nume-rical study of heave added mass and damping of horizontally submerged and perforated rectangular plates[J]. Journal of fluids & structures, 2013, 39(5):87-101.
VALENTIN D, PRESAS A, EGUSQUIZA E, et al. Experimental study on the added mass and damping of a disk submerged in a partially fluid-filled tank with small radial confinement[J]. Journal of fluids & structures, 2014, 50:1-17.
TORRE O D L, ESCALER X, EGUSQUIZA E, et al. Numerical and experimental study of a nearby solid boundary and partial submergence effects on hydrofoil added mass[J]. Computers & fluids, 2014, 91(7):1-9.