Page 171 - 《爆炸与冲击》2023年第2期

第 43 卷 第 2 期 爆 炸 与 冲 击 Vol. 43, No. 2
2023 年 2 月 EXPLOSION AND SHOCK WAVES Feb., 2023

DOI：10.11883/bzycj-2021-0531

不同迎爆面结构的泡沫金属对甲烷气体爆炸传播

阻隔性能的实验研究 *

张保勇，崔嘉瑞，陶 金，王亚军，秦艺峰，魏春荣，张迎新

（黑龙江科技大学安全工程学院，黑龙江 哈尔滨 150022）

摘要： 通过自行设计的爆炸管网设备进行实验，提出通过改变泡沫金属迎爆面的结构来增大与爆炸火焰的接触
面积，结合爆炸超压、火焰传播速度和火焰温度等参数来评价不同迎爆面设计结构的泡沫金属的阻隔爆性能。结果表
明，在相同厚度的前提下，在材料迎爆面增加一定的锯齿形波纹会使整体的阻隔爆性能有所提升，爆炸超压、火焰传
播速度和火焰温度的衰减率随着迎爆面锯齿角度的减小而增大。当泡沫金属迎爆面锯齿角度为 30°时，爆炸超压、火
焰传播速度和火焰温度的衰减率分别为 74.0%、76.18% 和 91.93%，爆炸超压下降速率为 30.76 MPa/s，材料后端熄爆参
数为 17.68 MPa·℃，阻隔爆效果较好。
关键词： 气体爆炸；泡沫金属；迎爆面结构；阻隔爆；衰减率
中图分类号： O381；X932 国标学科代码： 13035 文献标志码： A

Experimental study on barrier performances of foamed metals
with different blast front structures to prevent
methane explosion propagation

ZHANG Baoyong, CUI Jiarui, TAO Jin, WANG Yajun, QIN Yifeng, WEI Chunrong, ZHANG Yingxin
(Department of Safety Engineering, Heilongjiang University of Science and Technology,
Harbin 150022, Heilongjiang, China)

Abstract: The shock waves and flame produced by explosions of methane (CH ) and other combustible gas explosion can
4
cause huge casualties and property damage. Therefore, the explosion-proof isolating technologies have always been a hotspot
in the fields of industrial explosion protection. Foamed metal has attracted attention as a new type of explosion-isolating
material which can simultaneously block the propagation of gas explosion shock waves and flame waves. Its explosion-
isolating performance is a key factor affecting its application. However, there are few researches on improving the explosion-
isolating performances of materials by changing the overall structures of foamed metals. A new method was proposed to
change the structure of the blast front of a foamed metal and increase the contact area of the blast front with the explosion
flame, so as to improve the flame-proof performance of the foamed metal. In this experiment, the experimental material with
the thickness of 20 mm was prepared by wire cutting. Under the premise of the foundation thickness of 15 mm, the explosive
effect surface was prepared into serrated ripples with the thickness of 5 mm and the angles of 30°, 60° and 90°. The processed
foamed metal materials with different explosive effect surfaces were installed in the diffusion pipe near the end of the
experimental equipment. The sensors placed at different positions and with different distances were used to collect the relevant
data, and thereby the attenuation ratios of explosion overpressure, flame propagation velocity and flame temperature were

* 收稿日期： 2021-12-27；修回日期： 2022-08-06
基金项目： 黑龙江省重点研发计划（GA21C023）
第一作者： 张保勇（1982－ ），男，博士，教授，byzhang1982@163.com

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