LNG罐式集装箱船运过程中动态蒸发原型试验方法  

Prototype test method for dynamic evaporation in LNG tank containers during shipping

作　　者：于鹏 程康[2] 岳前进 YU Peng;CHENG Kang;YUE Qianjin(Faculty of Vehicle Engineering and Mechanics,Dalian University of Technology;Wuhan Rules&Research Institute,China Classification Society;School of Ocean Science and Technology,Dalian University of Technology)

机构地区：[1]大连理工大学运载工程与力学学部 [2]中国船级社武汉规范研究所 [3]大连理工大学海洋科学与技术学院

出　　处：《油气储运》2022年第4期431-437,共7页Oil & Gas Storage and Transportation

基　　金：国家重点研发计划项目“移动式承压类特种设备风险防控与治理关键技术研究”,2017YFC0805605;中国船级社武汉规范研究所项目“水上运输LNG罐式集装箱技术应用研究模型试验”,2016-10。

摘　　要：LNG蒸发是影响罐式集装箱运输安全的重要因素之一,运输过程中动态蒸发的特性尚未阐明。原型试验是最能反映动态蒸发特性的研究方法,但目前现有试验方法及设备加载能力无法满足原型试验的需求。在此,设计基于40 ft(1 ft=0.3048 m)的LNG罐式集装箱的动态蒸发原型试验系统,建造了大吨位单自由度运动模拟台,采用运动加载的方式实现物理子结构的原型加载,将蒸气流速作为表征蒸发强度的指标,采用智能气体测量系统实时测量蒸气流速。应用该系统进行实例测量,结果表明,提出的原型试验系统可用于罐式集装箱动态蒸发特性的系统研究;船体运动将加速LNG的蒸发,有关动态蒸发特性的研究对LNG罐式集装箱运输的安全性评估具有重要意义。The evaporation of LNG is one of the important factors that influence the transportation safety of tank containers,but the characteristics of dynamic evaporation during shipping have not been clarified yet.The prototype test is the research method that can best reveal the characteristics of dynamic evaporation.However,the loading capacity of existing test methods and equipment cannot meet the requirements of prototype test.Hence,a prototype test system of dynamic evaporation was designed based on the 40 ft(1 ft=0.3048 m)LNG tank containers,and a large-tonnage motion simulator platform with single degree of freedom was built.Then,the prototype loading on the physical substructure was realized by motion loading,and the boil-off gas velocity,which served as the indicator to characterize the intensity of evaporation,was measured by an intelligent gas measurement system in real time.As shown by the actual measurement with this system,the proposed prototype test system can be used for the systematic research on the characteristics of dynamic evaporation of tank containers,and ship motion can facilitate the LNG evaporation in tank containers.Generally,the research on the characteristics of dynamic evaporation is of great significance to the safety evaluation of LNG transportation by tank containers.

关 键 词：LNG 原型试验 罐式集装箱 动态蒸发 水陆联运 

分 类 号：TE835[石油与天然气工程—油气储运工程]