AP1000中ADS-4第4级自动降压系统夹带试验研究

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基金项目:

国核华清(北京)核电技术研发中心有限公司对本研究项目(小破口及其他瞬态热工水力分析程序开发,No.2011ZX06004-007)的资助

Experimental Investigation on Entrainment of Fourth Stage Automatic Depressurization System in AP1000

1. School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China;
2. State Nuclear Power Technology Research and Development Center, Beijing, 100090, China

摘要: 为研究AP1000反应堆第4级自动降压系统(ADS-4)夹带卸压过程,以AP1000核电厂为原型,按1:5.6模化比例设计建造了ADS-4喷放卸压试验回路(ADETEL)。用高速摄像仪记录试验现象并进行了详细分析。将试验数据和现有试验数据和模型进行对比,并得出以下结论:当热管段内液位较低时,夹带量会随着热管段内液位降低而迅速减小;在热管段内流动情况相同(流动参数相同)情况下,夹带起始在,竖直支管和水平主管管径比较小的工况下更容易发生;在相同的热管段相对液位下,AP1000中ADS-4支管内液体的夹带率较AP600低。
- ADS-4 /
- 夹带起始 /
- 夹带率
Abstract: In order to investigate the entrainment process of the fourth stage automatic depressurization system（ADS-4）, ADS-4 Depressurization and Entrainment Test Loop（ADETEL） scaled after AP1000 was constructed. The phenomenon of the entrainment was recorded by a high speed camera and analyzed particularly. The data was compared with the existing data and correlations. It discovers that the entrainment rate declined rapidly with the decrease of liquid level in hot leg when the liquid level is low. The onset of entrainment is more likely to happen in the condition of small ratio of branch-head line. The ADS-4 entrainment rate in AP1000 is lower than that in AP600 at the same relative hot leg liquid level.
- ADS-4 /
- Entrainment rate /
- Onset of entrainment