Review on research status of internal flow and technological development of reactor coolant pump
LONG Yun1*, YUAN Shouqi1, ZHU Rongsheng1,FU Qiang1, LI Tianbin2
1. National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. SEC-KSB Nuclear Pumps and Valves Co. Ltd., Shanghai 201306, China
Abstract:The reactor coolant pump is the only high-speed rotating equipment in the reactor coolant system. It is the most critical equipment affecting the safety and reliability of nuclear power plants.Its long-term efficient, stable and safe operation is extremely important to prevent nuclear power plant accidents. In recent years, with the rapid development of the global nuclear power industry, the importance of the reactor coolant pump has attracted widespread attention. The reactor coolant pump is a component of the pressure boundary of the primary circuit. Under transient and catastrophic extreme conditions such as start and stop, earthquake, or tsunami such as shaft jamming, shaft seal leakage or loss of external power, the balance between the reactor coolant pump cooling capacity and heat released from the reactor is disrupted, seriously threatening the safety of the reactorcore. The complexity and high safety of the key components of the reactor coolant pump and its associated systems under various complex working conditions are the main reasons for the extreme difficulty in manufactu-ring the reactor coolant pump. Firstly, the development history of nuclear power technology is discussed, then the world′s main third-generation nuclear power technologies and the current status of China third-generation nuclear power construction and development is followed.Specially, China own third-generation technology, such as Hualong No.1—HPR1000 and Guohe No.1—CAP1400 reactor coolant pumps is described. Further, and the third-generation pressurized water reactor system and key equipment explained briefly using the CAP reactor coolant pumpseries as an example. Two typical shaft sealless pumps: canned motor reactor coolant pump and wet winding reactor coolant pump are introduced. The current research status of internal flow of the reactor coolant pump is presented, including hydraulic optimization design, complete characteristics, hydraulic performance under accident conditions, gas-liquid two-phase flow, cavitation characteristics, fluid-structure coupling, etc.The safety and reliability of the reactor coolant pump are extremely important, but the design, processing and ma-nufacturing of the pump are also quite challenging. Therefore, in-depth investigation into the basic theory of internal flow and key technology of the reactor coolant pump, breaking through foreign technical barriers, mastering the core and key technologies with own intellectual property rights, and realizing the leap-forward development in reactor coolant pump technology are current stranglehold problems that China needs to solve urgently.
龙云,袁寿其,朱荣生,付强,李天斌. 核主泵内部流动研究现状与技术发展综述[J]. 排灌机械工程学报, 2020, 38(11): 1081-1097.
LONG Yun*,YUAN Shouqi,ZHU Rongsheng,FU Qiang,LI Tianbin. Review on research status of internal flow and technological development of reactor coolant pump. Journal of Drainage and Irrigation Machinery Engin, 2020, 38(11): 1081-1097.