基于实际工程设计工作的需要,研究了全容式LNG储罐内罐泄漏动态过程的特点,建立了描述内罐泄漏动态过程的泄漏源模型,推导了基于泄漏孔位置的泄漏液体液位高度与泄漏持续时间关系的方程。以某16×104m3的LNG储罐为例,进行了不同泄漏工况的计算与分析,结果表明:全容式LNG储罐内罐泄漏最不利的情况是内罐底部出现破裂,此时,液体泄漏到环形空间的时间最短。 Based on the needs of practical engineering design, the characteristics of the dynamic process of internal tank leakage of a full-capacity LNG storage tank were studied. A leakage source model describing the dynamic process of internal tank leakage was established. The leakage liquid level height and leakage The equation of duration. Taking a 16 × 104m3 LNG storage tank as an example, the calculation and analysis of different leakage conditions are carried out. The results show that the most unfavorable internal tank leakage of the full capacity LNG storage tank is the rupture of the bottom of the inner tank. At this time, the liquid leakage The shortest time to the annulus.