PDF《车载高压氢瓶火烧试验及不同充装介质数值比较研究 》

第26 卷第

3 期高校化学工程学报No.

3 Vol.26

2012 年6月Journal of Chemical Engineering of Chinese Universities June

2012 文章编号:1003-9015(2012)03-0412-06 车载高压氢瓶火烧试验及不同充装介质数值比较研究? 刘岩,郑津洋 , 胡军1,2

2 1 (1. 大连市锅炉压力容器检验研究院, 辽宁 大连 116013;

2. 浙江大学 化工机械研究所, 浙江 杭州 310027) 摘要:目前我国尚无车载氢瓶火烧试验标准.当气瓶充装介质为氢气进行火烧试验时,因氢气易燃易爆的特殊性而 使得试验具有巨大的危险.今通过火烧试验,得到了过程中氢瓶温度以及压力变化数据,以此为基础建立了燃烧场数 值仿真模型,用于模拟气瓶内部充装介质分别为氢气和空气时温度和压力的变化.模拟与试验结果比较表明:所建模 型能较为准确地预测气瓶内部温度、压力的变化规律,压升过程中空气与氢气的变化规律基本类似,可为确定车载氢 燃料气瓶的火烧试验方法以及控制参数提供技术支撑. 关键词:高压氢瓶;

火烧试验;

燃烧;

数值仿真;

温升;

压升;

空气 中图分类号:X933.4;

TQ051.3 文献标识码:A Bonfire Test and Different Filling Mediums? Numerical Comparison Research of High-Pressure Hydrogen Storage Cylinders for Vehicle LIU Yan1,2 , ZHENG Jin-yang2 , HU Jun1 (1. Dalian Boiler and Pressure Vessel Inspection Institute, Dalian 116013, China;

2. Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China) Abstract: At present, there is no bonfire test standard of high-pressure hydrogen storage cylinders for vehicles in China. The bonfire test of cylinders filled with hydrogen medium may cause serious accident because of the hydrogen'

s particularity of flammability and explosiveness. The temperature and pressure variation data of the cylinder during bonfire test were obtained by the experiments of bonfire tests. Then the numerical model was built to simulate the real combustion of the bonfire test. By the heat transfer calculation, the temperature and pressure rising process of the hydrogen and air in the cylinder were simulated separately. The comparison of the experimental bonfire test results and the simulation results indicates that the model could accurately predict the variation rules of the temperature and pressure in the cylinder, and the pressure variation rule of air and hydrogen gas are similar. This study provides the technical support to determine the optimal control parameters for the bonfire test of hydrogen storage cylinder for vehicles. Key words: high-pressure hydrogen storage vessel;

bonfire test;

combustion;

numerical simulation;

temperature rising;

pressure rising;

air

1 引言火烧试验是为了验证按设计规定带有防火保护系统(瓶阀、压力泄放装置和/或整体的绝热层)的成品 气瓶, 处于规定的火烧条件下防止爆炸的能力[1,2] . 火烧试验为轻质高压容器安全性能检测项目中的一项, 我国目前采用的相关试验方法标准一般参照DOT、ISO等国际相关标准. 火烧试验采用天然气加热,高压气瓶在加热状态下瓶内充装介质会随着温度的升高而膨胀,压力逐 收稿日期:2010-11-11;

修订日期:2011-04-29. 基金项目:国家重点基础研究发展计划(973)课题(2007CB209706);

国家高技术研究发展计划(863)项目(2012AA051504);

国家质量监督检验检疫总局科技计划项 目(2010QK206). 作者简介:刘岩(1982-),男,河北沧州人,浙江大学博士后,博士.通讯联系人:郑津洋, E-mail:[email protected] 第26 卷第