燃料电池汽车氢系统泄放安全研究
Research on release safety of on-board hydrogen system in fuel cell vehicle
李力军 1王昕雨 1唐小龙 1申思佳 1傅林 1燕泽英 1郝佳 1赵强1
作者信息
- 1. 潍柴动力股份有限公司,山东潍坊 261061
- 折叠
摘要
针对燃料电池汽车车载氢系统冬季出现温度驱动安全泄压装置(TPRD)异常损坏,影响泄放系统的密封和强度,严重危及氢气的泄放安全等问题,通过设计TPRD抗冻胀试验,系统分析车载氢系统泄放管路进水结冰冻胀后对其泄放安全的影响.试验结果显示,车载氢系统泄放管路进水后,在反复"结冰-消融"这一循环过程中,产生的冻胀应力造成试验用两组瓶口组合阀的TPRD发生意外激活,均未通过抗冻胀试验,其中,玻璃泡形式TPRD按照预设通道进行泄放,易熔合金形式TPRD未按照预设通道泄放,严重影响氢气泄放安全.未来应重点关注泄放管路的防水与排水设计,避免因进水造成涉氢安全事故.
Abstract
In view of the abnormal damage of TPRD in hydrogen system of hydrogen fuel cell vehicles in winter,which affects the sealing and strength of the release system,and seriously endangers release safety of hydrogen,the effects of ice swelling of entering water of the on-board hydrogen system release pipeline were analyzed systematically by designing frozen heave resistance test for TPRD.The test results show that after water enters the discharge pipeline of the on-board hydrogen system,the frost heave stress generated during the repeated"freezing-thawing"cycle causes the TPRD of the two sets of bottle mouth combination valves used in the test to be accidentally activated,and both failed the anti-frost heave test.Among them,the glass bubble TPRD was discharged according to the preset channel,and the fusible alloy TPRD was not discharged according to the preset channel,which seriously affected the safety of hydrogen discharge.Therefore,in the future,more attention should be paid to the waterproof and drainage design of the release pipeline to avoid hydrogen-related safety accidents due to water injection.
关键词
车载氢系统/泄放安全/安全泄压装置/冻胀应力/氢燃料电池汽车Key words
on-board hydrogen system/release safety/safety relief device/frozen heave stress/hydrogen fuel cell vehicles引用本文复制引用
基金项目
国家重点研发计划项目(2021YFB4000800)
出版年
2024
国家科技期刊平台
NSTL
万方数据