基于缩比模型的AP1000自动泄压系统泄压工况下内置换料水箱过冷水流动特性实验研究

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基金项目:

国家科技重大专项资助项目(2011ZX06004-024-07-03-00)

Experimental Study on Flow Characteristics of Large Subcooled Water in In-Containment Refueling Water Storage Tank Based on Scaled Model of AP1000 ADS under Depressurization Condition

1. North China Electric Power University, Beijing, 102206, China;
2. Beijing Key Laboratory of Passive Safety Technology for Nuclear Energy, Beijing, 102206, China;
3. State Nuclear Power Software Development Center, Beijing, 102209, China;
4. National Energy Key Laboratory of Nuclear Power Software, Beijing, 102209, China

摘要: 以AP1000为原型,搭建整体缩比实验台架,模拟内置换料水箱(IRWST)中自动泄压系统(ADS)泄压工况下,高温高压蒸汽在水下的喷放、冷凝过程,主要利用热电偶点阵、粒子图像测速(PIV)等技术监测喷洒器附近蒸汽喷放过程中的行为以及池内三维温度场、速度场分布。通过对喷放情况下内置换料水箱内过冷水的热分层及自然循环现象的研究,提出优化方案,从而提高内置换料水箱中水的利用率。
- 内置换料水箱 /
- 自动泄压系统 /
- 喷洒器 /
- 热分层 /
- 优化设计
Abstract: Based on the design of AP1000 power plant, a fully scaled experimental mock-up was built to simulate the high-temperature and high-pressure steam spraying, steam condensation under depressurization condition through Automatic Depressurized System（ADS）. The experiment recorded the flow characteristics and 3D temperature and velocity distribution around sprayer in IRWST by dot matrix of thermocouples and Particle Image Velocimetry Particle Image Velocimetry（PIV）. By studying the thermal stratification and natural circulation in the IRWST under depressurization condition when undercooling water is large, an optimization scheme was proposed to improve the efficiency of cooling water in IRWST.
- IRWST /
- ADS /
- Sprayer /
- Thermal stratification /
- Optimization design