|
|
|
| Research progress of reactor coolant pump pressure fluctuation and its improvement methods |
| YE Daoxing1,2*, LIU Anlin2, LUO Yimin2, YU Bo2, LAI Xide2 |
| 1. Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University, Chengdu, Sichuan 610039, China;2. School of Energy and Power Engineering, Xihua University, Chengdu, Sichuan 610039, China |
|
|
|
| Guide |
|
|
Abstract Pressure pulsation is an important factor that causes unstable phenomena such as vibration and noise in the reactor coolant pump. The strong pulsation may cause a nuclear accident. With the rapid development of the nuclear power industry, in order to ensure the safe and stable operation of the nuclear island, the research on the pressure pulsation of the reactor coolant pump has become extremely important to the safety of the nuclear island. Reviewing the relevant research results of diffe-rent researchers in recent years on the pressure pulsation of the reactor coolant pump, and discussing the research related to the pressure pulsation through a literature survey, it is found that the main factors of the pressure pulsation are the impact of the reactor coolant pump inflow, the secondary return flow, and the static and dynamic interference. As for flow disturbances caused by them, generally, theoretical analysis, numerical simulation and model tests can be used to study the pressure pulsation of the reactor coolant pump. Finally, the current research status of pressure pulsation in each flow channel of the reactor coolant pump in the case of large, medium, and small flow rates, rotor seizure accident and loss of coolant accident in the past ten years were summerized. The method to improve the pressure pulsation of the internal flow passage of the nuclear main pump by optimizing the structure of the impeller, guide vane and volute were also concluded.
|
|
Received: 02 July 2020
|
| Fund: |
|
|
|
|
|
|
