Design and experimental research of oil cooler for reactor coolant pump
FENG Xiaodong1,2*, WANG Lei1, MA Yu3, WANG Yahui2
1. Harbin Electric Power Equipment Co., Ltd., Harbin, Heilongjiang 150066, China; 2. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China; 3. Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, Guangdong 519082, China
According to the requirement of the oil cooler of RCP, a bubble-plate type oil cooler, which meets the requirements of both heat transfer performance and fluid resistance was developed. The heat transfer effect is increased and the fluid resistance is reduced by using the bubble type heat exchanger plate. Through the design calculation, strength calculation and seismic analysis, the theoretical verification of the oil cooler was carried out. Through the theoretical calculation, the cooling water outlet temperature is 44.67 ℃, the oil pressure drop is 0.07 MPa, the cooling water pressure drop is 0.015 MPa, and the heat exchange power is 67.76 kW. The frequencies obtained by modal analysis are greater than the specified 50 Hz. Stress calculations were carried out for the 0/A, B and D grades under the three load combinations, indicating that the calculated values of film stress and film + bending stress were within the specified stress limits and met ASME specifications. The calculation results show that the designed oil cooler meets the design requirements and has high safety and reliability. At the same time, the heat transfer performance and fluid resistance of the oil cooler were tested. The results meet the design conditions and the thermal balance error of heat release and heat absorption is 1.83%, which meets the experimental requirements of heat balance. It presents a new idea for the design of the oil cooler, which can provide reference for the improvement and optimization of the plate type oil cooler.
FANG Shuqi,ZHU Chunjin,WU Yong,et al.Research progress of strengthened heat transfer technique and new type high efficient heat exchangers[J].Chemical engineering & machinery,2004,31(4):249-253.(in Chinese)
LIU Xiaoya,DING Ming,LI Chun,et al.An experimental study of enhanced heat transfer and frictional characte-ristics of porous meatal materials for oil coolers[J].Nuclear power engineering,2017(3):24-28.(in Chinese)
WANG Mengmeng,XIE Pengcheng,JIAN Ranran,et al.Numerical simulation of heat transfer enchancement and field synergy analysis of a new type of heat transfer enhancement screw[J].Journal of Beijing University of Chemical Technology(natural science),2018,45(1):65-71.(in Chinese)