压缩天然气气瓶超压泄放装置爆破及疲劳特性实验研究  

Experimental Study on Blasting and Fatigue Characteristics of Excessive Pressure Relief Devices of Compressed Natural Gas Cylinder

作　　者：喻健良[1] 孙萌雪 闫兴清[1] 张健中[2] 周日峰[2] 

机构地区：[1]大连理工大学化工机械与安全学院,大连116024 [2]中国石化青岛安全工程研究院,青岛266000

出　　处：《科学技术与工程》2017年第11期84-88,共5页Science Technology and Engineering

基　　金：国家自然科学基金(51574056);中国石化青岛安全工程研究所委托技术开发课题(201501612)资助

摘　　要：建立了超压泄放装置的疲劳实验平台,研究了压缩天然气(CNG)气瓶采用的爆破片与易熔塞组合泄放装置的爆破及疲劳性能。结果表明:易熔塞的结构决定了装置能否正常泄放;爆破片操作比和压环圆角的大小是影响装置疲劳性能的重要因素。国内外标准规定的超压泄放装置结构均存在很大安全隐患,因此装置必须进行相应的改进。Based on the fatigue test platform of the excessive pressure relief devices, the rupture and fatigue performance of the bursting disc and fusible plug were studied using the excessive pressure relief devices of C N G gas cylinder from different manufacturers. The results show that the structure of the fusible plug determines whether the device normally vents. In addition, the operating ratio of rupture disc and the chamfer of junk ring have important influence on the fatigue performance of the device. According to the experimental analysis, the structural designs of the excessive pressure relief devices exist great potential safety hazard, which are determined by national and international standards. The pressure relief device should be further improved for the safe operation.

关 键 词：CNG 气瓶 超压泄放装置 爆破片 易熔塞 疲劳寿命 

分 类 号：TQ055.8[化学工程]