火灾工况充装压缩气体容器超压泄放装置尺寸计算解析  

Research on size calculation of pressure relief devices for gas-filled pressure vessels under exterior fire condition

作　　者：吴全龙 史斐菲 徐维普[2] 王红霞[3] WU Quanlong;SHI Feifei;XU Weipu;WANG Hongxia(Shanghai Huali Safety Devices Co.,Ltd.,Shanghai 201109,China;Shanghai Institute of Special Equipment Inspection and Technical Research,Shanghai 200062,China;Shijiazhuang Enric Gas Equipment Co.,Ltd.,Shijiazhuang 051430,China)

机构地区：[1]上海华理安全装备有限公司,上海201109 [2]上海市特种设备监督检验技术研究院,上海200062 [3]石家庄安瑞科气体机械有限公司,石家庄051430

出　　处：《压力容器》2023年第11期62-66,86,共6页Pressure Vessel Technology

基　　金：上海市“科技创新行动计划”科技支撑碳达峰碳中和专项项目“大容积安全高效高压储氢容器研制及应用”(22DZ1206300)。

摘　　要：由于火灾工况充装压缩气体容器的吸热量难以精准确定,其超压泄放装置尺寸计算是工程设计中的一大难题。对API 521—2021标准中的相关计算公式进行了分析,其推导过程中以空气为基准,忽略了容器本身隔热和泄放时介质温度的变化,这些假设条件对实际工况的计算结果将带来偏差。结果表明,根据API 521—2021计算的超压泄放装置尺寸偏保守,虽然可以保证容器的泄放要求,但如果选用安全阀,应对可能导致的安全阀频跳引起足够的重视。Because the heat absorption is difficult to be determined accurately,the size calculation of the pressure relief devices for compressed gas vessels under fire conditions poses a significant challenge in engineering design.The formulas in API 521—2021 standard were analyzed.Since the deduction process is based on the air,and the heat insulation and the change of the medium temperature during the relief were ignored,these assumptions will bring deviations of calculation results of the actual conditions.The results indicate that the size calculated according to API 521—2021 is conservative,although it can ensure relief requirements of the vessel,enough attention should be paid to the possible chatter of the safety valve if safety valve is selected.

关 键 词：火灾工况 压缩气体 超压泄放装置 吸热量 

分 类 号：TH49[机械工程—机械制造及自动化] TQ055.8[化学工程] T-65[一般工业技术]