半地下覆土立式油罐内部油气爆炸冲击荷载实验研究
发布时间：2018-11-08 13:09
【摘要】：半地下覆土油罐常用于储存汽油、柴油等易燃易爆油品,一旦被引燃,短时间内将产生极强的爆炸压力波,造成储罐的严重破坏并带来灾难性后果,油气爆炸冲击荷载的研究是进行储罐安全设计的基础。利用等比例模拟容器,基于实验对覆土立式油罐罐内油气爆炸冲击载荷特性进行了实验研究,获得了密闭条件下油罐内不同位置处的压力荷载的变化规律,油气爆炸压力荷载变化分为四个阶段:点火孕育期、加速突变期、衰弱振荡期、惯性波动期;罐顶位置处的压力荷载数值要明显大于罐壁和罐底处的压力荷载数值;进一步考察了初始油气浓度、初始点火能量、初始温度等相关参数对爆炸冲击荷载的影响规律。研究结果表明:爆炸超压随浓度的变化呈先增大后减小的规律,当初始浓度为1.71%时,爆炸超压荷载达到最大值。爆炸超压值与点火能成正比关系,与初始环境温度成反比关系。
[Abstract]:Semi-underground earth covered oil tanks are often used to store flammable and explosive oils such as gasoline and diesel oil. Once they are ignited, they will produce extremely strong explosion pressure waves in a short period of time, causing serious damage to the storage tanks and bringing about disastrous consequences. The research of oil-gas explosion impact load is the basis of tank safety design. In this paper, the shock load characteristics of oil and gas explosion in vertical oil tank with overlying soil are studied experimentally based on experiments in an equal-proportion simulated vessel. The variation law of pressure load at different positions in the tank is obtained under the condition of airtight. The change of pressure load of oil and gas explosion is divided into four stages: ignition gestation period, accelerated sudden change period, debilitating oscillation period, inertial fluctuation period; The pressure load value at the top of the tank is obviously larger than that at the tank wall and bottom, and the influence of the initial oil and gas concentration, the initial ignition energy and the initial temperature on the explosion impact load is further investigated. The results show that the explosive overpressure increases first and then decreases with the change of concentration. When the initial concentration is 1.71, the explosive overpressure load reaches the maximum value. The explosion overpressure is proportional to the ignition energy and inversely proportional to the initial ambient temperature.
【作者单位】： 中国人民解放军陆军勤务学院油料系;浙江海洋大学石化与能源工程学院;临港石油天然气储运技术国家地方联合工程实验室;重庆大学动力工程学院;
【基金】：重庆市研究生科研创新项目(CYB17150) 浙江省科技厅公益基金项目(2015C31014) 浙江海洋大学科研启动基金(2015) 国家自然科学基金(51704301)
【分类号】：TE88
本文编号：2318597
[Abstract]:Semi-underground earth covered oil tanks are often used to store flammable and explosive oils such as gasoline and diesel oil. Once they are ignited, they will produce extremely strong explosion pressure waves in a short period of time, causing serious damage to the storage tanks and bringing about disastrous consequences. The research of oil-gas explosion impact load is the basis of tank safety design. In this paper, the shock load characteristics of oil and gas explosion in vertical oil tank with overlying soil are studied experimentally based on experiments in an equal-proportion simulated vessel. The variation law of pressure load at different positions in the tank is obtained under the condition of airtight. The change of pressure load of oil and gas explosion is divided into four stages: ignition gestation period, accelerated sudden change period, debilitating oscillation period, inertial fluctuation period; The pressure load value at the top of the tank is obviously larger than that at the tank wall and bottom, and the influence of the initial oil and gas concentration, the initial ignition energy and the initial temperature on the explosion impact load is further investigated. The results show that the explosive overpressure increases first and then decreases with the change of concentration. When the initial concentration is 1.71, the explosive overpressure load reaches the maximum value. The explosion overpressure is proportional to the ignition energy and inversely proportional to the initial ambient temperature.
【作者单位】： 中国人民解放军陆军勤务学院油料系;浙江海洋大学石化与能源工程学院;临港石油天然气储运技术国家地方联合工程实验室;重庆大学动力工程学院;
【基金】：重庆市研究生科研创新项目(CYB17150) 浙江省科技厅公益基金项目(2015C31014) 浙江海洋大学科研启动基金(2015) 国家自然科学基金(51704301)
【分类号】：TE88
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