摘要
根据我国石油气体管道阻火器实验的国家标准(GB13347—92),对6组ⅡA类气体波纹板阻爆燃型阻火器进行了实验探究,得到了相应的阻火速度。实验结果表明:阻火器扩张比、阻火芯狭缝通道长度以及狭缝截面形状是影响阻火速度的主要因素。通过分析以上3个因素对阻火速度的影响,得出了阻火速度与阻火器基本参数的拟合公式。结果表明:阻火速度与狭缝通道的长度、扩张比的平方成正比,与狭缝截面三角形的特征尺寸成反比。
According to the national standards of oif and gas pipeline fire test in China （GB13347 -92）,six DN50 crimped ribbon deflagration arrestors belonging to Group II A were tested by experi-ments ,and the flameproof velocity of every single arrestor was obtained. The experimentalshow that the expansion ratio, the length of the narrow channel and the cross-section of the narrowpassage are the three dominant factors that influence the flameproof velocity. Based on this analysis,the relation between the flameproof velocity and the expansion ratio？ the thickness of the crimped rib-bon element and the cross-section of the narrow passage were presented. The results indicate that the flameproof velocity is proportional to the length of the narrow channels and the square of expansion ratio,whereas it is inversely proportional to the feature size of the cross-section. This study can pro-vide guidance in the design and manufacture of crimped ribbon deflagration arrestors.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2017年第4期766-772,共7页
Explosion and Shock Waves
基金
国家自然科学基金项目(51674229
51374189)
关键词
爆燃阻火器
波纹板
阻火速度
扩张比
狭缝
deflagration arrestors
crimped ribbon
flameproof velocity
expansion ratio
narro
