| 液化天然气船水上泄漏事故源强计算方法 |
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| 引用本文： | 庄学强,郑超瑜. 液化天然气船水上泄漏事故源强计算方法[J]. 大连海事大学学报(自然科学版), 2010, 0(4) |
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| 作者姓名： | 庄学强 郑超瑜 |
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| 作者单位： | 集美大学轮机工程学院; |
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| 基金项目： | 福建省教育厅资助项目(JA08148); 李尚大集美大学学科建设基金资助项目(ZC2010007) |
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| 摘 要： | 为更准确地计算液化天然气(LNG)船水上泄漏源强,研究了LNG船泄漏时LNG蒸发率、真空阀补气率、LNG泄漏率与货舱蒸汽压力变化间的相互作用机理,分析了货舱类型对泄漏源强的影响,给出改进的LNG船水上泄漏源强计算方法.结果表明:LNG船泄漏时货舱液面上方的压力会降低,从而影响实际泄漏速率,而且泄漏孔径越大,影响越严重;Membrane型货舱的泄漏源强特性与矩形舱较接近,Moss型货舱泄漏源强特性与矩形舱差别较大.
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| 关 键 词： | 液化天然气(LNG)船 水上泄漏 源强 |
Calculating method of releasing source strength of liquefied natural gas carrier above water |
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| ZHUANG Xueqiang,ZHENG Chaoyu. Calculating method of releasing source strength of liquefied natural gas carrier above water[J]. Journal of Dalian Maritime University, 2010, 0(4) |
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| Authors: | ZHUANG Xueqiang ZHENG Chaoyu |
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| Affiliation: | ZHUANG Xueqiang,ZHENG Chaoyu(Marine Engineering College,Jimei University,Xiamen 361021,China) |
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| Abstract: | To calculate accurately releasing source strength of liquefied natural gas(LNG) carrier above water,the interaction mechanism among LNG evaporating rate,vacuum relief valves make-up rate,discharge rate and head-space vapour pressure change was studied,the influence of tank types on releasing source was also analyzed,and then an improved calculating method of releasing source strength of LNG carrier was given.Results show that the pressure above liquid level of tank would decrease during LNG carrier releasin... |
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| Keywords: | liquefied natural gas(LNG) carrier releasing above water source strength |
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