史宝军;聂士明;孙静;

• 1:河北工业大学省部共建电工装备可靠性与智能化国家重点试验室
• 2:河北工业大学机械工程学院
• 3:河北省机器人感知与人机融合重点试验室
• 4:国家技术创新方法与实施工具工程技术研究中心

摘要(Abstract)：

针对液化石油气(Liquefied Petroleum Gas, LPG)泄漏扩散问题，以天津市某石化企业4 000 m³的LPG球罐泄漏为研究背景，对LPG泄漏扩散过程及扩散规律进行了研究。首先介绍了加入时间参数的高斯烟羽混合模型，解决了高斯烟羽模型不能表现气体泄漏初期空间质量浓度场分布的问题；然后根据LPG的爆炸极限范围划分了相应的危险区域质量浓度范围，研究了不同风速、地面粗糙度和大气稳定度下LPG的泄漏扩散规律、危险区域的扩散距离随泄漏时间的变化曲线及达到稳定状态后的扩散面积。结果表明，风速越小、地面粗糙度越小、大气稳定度越不稳定，等质量浓度线扩散的距离越远，扩散形成的危险区域面积越大。最后采用Burro 9号试验数据对加入时间参数的高斯烟羽混合模型进行了验证，模拟结果与试验结果的误差在15%以内，表明高斯烟羽混合模型可以用于气体泄漏扩散模拟，模拟结果具有合理性和一定的指导意义。

关键词(KeyWords)： 安全工程;液化石油气;泄漏扩散;高斯烟羽模型

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目(2019YFB1312102);; 国家自然科学基金项目(U20A20201);; 河北省重点研发计划项目(20311803D);; 河北省自然科学基金项目(E2019202338)

作者(Authors): 史宝军;聂士明;孙静;

DOI: 10.13637/j.issn.1009-6094.2020.1517

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