LOCA下喷放水流对周围仪表仪器的影响分析

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基金项目:

国家重点基础研究发展计划(No.2009CB724301)

Analysis of Effect of Flashing Liquid Jet on Surrounding Instruments during LOCA

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

摘要: 在核电厂一回路发生冷却剂流失事故(LOCA)时,冷却剂从破口喷出,急速汽化,可对周围的仪表仪器造成强冲击力的破坏,产生极为严重的后果。本文以900 MW压水堆为研究对象,使用数值模拟的方法,建立一维喷放模型,分析LOCA可能造成的破坏力。分析结果表明,以激波作为分界线,在激波形成前的仪表仪器将受到强冲击力,而在激波形成后冲击力对仪表仪器的影响可以忽略。
- 冷却剂流失事故 /
- 一维喷放模型 /
- 激波
Abstract: When the loss of coolant accident（LOCA） happens in the nuclear power plants,the coolant will be discharged to the low-pressure environment and evaporated immediately,causing damage to the surrounding instruments.The numerical software has been used to establish one-dimensional model for the prediction of possible damage in this severe accident,thus giving some advice for the nuclear power plant layout.The analytical result shows that the shock wave should be seen as a critical line,within which the instrument will be under high pressure,beyond which almost no mechanical damage will be caused.
- Loss of coolant accident /
- One-dimensional model /
- Shock wave