组合多孔介质与氮气幕协同抑制瓦斯爆炸实验研究

王健; 余靖宇; 凡子尧; 郑立刚; 刘贵龙; 赵永贤

doi:10.11883/bzycj-2022-0562

组合多孔介质与氮气幕协同抑制瓦斯爆炸实验研究

doi: 10.11883/bzycj-2022-0562

王健^{1, 2, 3,},
余靖宇¹,
凡子尧¹,
郑立刚^{1, 2, 3},
刘贵龙¹,
赵永贤¹

1.
河南理工大学安全科学与工程学院，河南焦作 454003
2.
河南理工大学煤炭安全生产与清洁高效利用省部共建协同创新中心，河南焦作 454003
3.
河南理工大学瓦斯地质与瓦斯治理省部共建国家重点实验室培育基地，河南焦作 454003

基金项目: 河南理工大学青年骨干教师资助计划（2022XQG-16）；河南理工大学创新科技团队（T2021-4）；国家自然科学基金（51974107）

详细信息

作者简介:
王　健（1982－　），男，博士，副教授，wjhpu@hpu.edu.cn

中图分类号: O389
计量
- 文章访问数: 214
- HTML全文浏览量: 42
- PDF下载量: 52
- 被引次数: 0
出版历程
- 收稿日期: 2022-12-17
- 修回日期: 2023-05-25
- 刊出日期: 2023-10-27

Experimental study on the synergistic suppression of gas explosion by combined porous media and nitrogen curtain

WANG Jian^{1, 2, 3
,},
YU Jingyu¹,
FAN Ziyao¹,
ZHENG Ligang^{1, 2, 3},
LIU Guilong¹,
ZHAO Yongxian¹

1.
School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan, China
2.
State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization, Henan Polytechnic University, Jiaozuo 454003, Henan, China
3.
State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454003, Henan, China

摘要

摘要: 为探究组合多孔介质与氮气幕抑制瓦斯爆炸的协同作用，在自主设计的爆炸管道内开展了爆炸实验。氮气幕距离点火位置0.9 m。实验选择的组合多孔介质是由孔隙密度为10 ppi的泡沫铁镍与20、30、40 ppi的泡沫铁镍形成的组合体，以及10 ppi的泡沫铁镍与20、40 ppi的泡沫铜组成的组合体。研究表明：合理改变多孔介质的组合能提升与氮气幕共同抑制瓦斯爆炸的效果；第一层使用泡沫铁镍和第二层使用泡沫铜的组合显著削减火焰到达多孔介质时的强度，降低超压峰值，同时能够防止刚度低的泡沫铜形变而造成淬熄失败；抑爆效果最佳的组合为孔隙密度为10 ppi的泡沫铁镍与40 ppi的泡沫铜形成的组合多孔介质。
- 组合多孔介质 /
- 协同抑制 /
- 氮气 /
- 瓦斯爆炸
Abstract: To investigate the synergistic effect of N₂ and combined porous media to suppress gas explosion, the experiments were carried out in an independently designed explosion pipe. The nitrogen curtain was 0.9 m away from the ignition location. The combined porous media used in the experiments consist of a combination of iron-nickel foam with pore densities of 10, 20, 30 and 40 ppi, as well as a combination of iron-nickel foam with 10 ppi and copper foam with 20 and 40 ppi. The results show that nitrogen curtains cause intact flames to propagate forward in a fragmented manner, diluting the concentration of combustible gases upstream of the porous medium and slowing down the flame propagation speed. The porous medium, on the other hand, effectively absorbs the precursor shock wave and disrupts the positive feedback mechanism, leading to further weakening of the flame propagation speed towards the porous medium and enhancing the quenching performance of the medium. The porous media with high pore density as the second layer of the combined porous media, can block the nitrogen from escaping upstream of the porous media, significantly reducing the concentration of combustible gases upstream, the flame propagation speed then decreases rapidly, and the slowed down flame is more easily quenched by the combined porous media. When the pore density of the second layer increases, the first overpressure peak remains largely unchanged, while the second overpressure peak rises sharply, which increases the risk of explosion. The combination of iron-nickel foam in the first layer and copper foam in the second layer significantly reduces the intensity of the flame when it reaches the porous media and lowers the overpressure peak, while the high strength of iron-nickel foam in front of the copper foam prevents the low strength copper foam from deforming and causing quenching failure. The combination with the best explosion suppression effect is the pore density 10 ppi of iron-nickel foam metal and 40 ppi of copper foam to form a combination of porous media.
- combined porous media /
- synergistic inhibition /
- nitrogen /
- gas explosion

HTML全文

图 1 实验系统

Figure 1. Experimental system

下载: 全尺寸图片幻灯片

图 2 组合多孔介质抑制作用下的火焰传播图像

Figure 2. Flame propagation images under the suppression of the combined porous media

下载: 全尺寸图片幻灯片

图 3 不同组合多孔介质的火焰前锋位置-时间曲线

Figure 3. The curve of flame front position versus time for different combinations of porous media

下载: 全尺寸图片幻灯片

图 4 不同组合多孔介质的火焰传播速度-位置曲线

Figure 4. Velocity-position curves of flame propagation fordifferent combinations of porous media

下载: 全尺寸图片幻灯片

图 5 不同组合多孔介质的爆炸超压-时间曲线

Figure 5. Variation curves of explosion overpressure with time for different combinations of porous media

下载: 全尺寸图片幻灯片

图 6 抑制机理示意图

Figure 6. Schematic diagram of suppression mechanism

下载: 全尺寸图片幻灯片

图 7 多孔介质上下游超压对比

Figure 7. Comparison of upstream and downstream overpressure of porous media

下载: 全尺寸图片幻灯片

表 1 实验工况

Table 1. Experimental conditions

工况	第一层		第二层
工况	孔隙密度/ppi	材质	孔隙密度/ppi	材质
F10F10	10	Fe-Ni	10	Fe-Ni
F10F20	10	Fe-Ni	20	Fe-Ni
F10F30	10	Fe-Ni	30	Fe-Ni
F10F40	10	Fe-Ni	40	Fe-Ni
F10C20	10	Fe-Ni	20	Cu
F10C40	10	Fe-Ni	40	Cu

下载: 导出CSV

参考文献(27)

[1]	张俊卿. 城市天然气管道泄露危害及预防措施 [J]. 中国新技术新产品, 2020(10): 141–142. DOI: 10.13612/j.cnki.cntp.2020.10.061. ZHANG J Q. City gas pipeline leakage hazards and preventive measures [J]. New Technology & New Products of China, 2020(10): 141–142. DOI: 10.13612/j.cnki.cntp.2020.10.061.
[2]	张迎新, 吴强, 刘传海, 等. 惰性气体N₂/CO₂抑制瓦斯爆炸实验研究 [J]. 爆炸与冲击, 2017, 37(5): 906–912. DOI: 10.11883/1001-1455(2017)05-0906-07. ZHANG Y X, WU Q, LIU C H, et al. Experimental study on coal mine gas explosion suppression with inert gas N₂/CO₂ [J]. Explosion and Shock Waves, 2017, 37(5): 906–912. DOI: 10.11883/1001-1455(2017)05-0906-07.
[3]	余明高, 韦贝贝, 郑凯. N₂与CO₂对合成气爆炸特性影响的实验研究 [J]. 爆炸与冲击, 2019, 39(6): 065401. DOI: 10.11883/bzycj-2018-0131. YU M G, WEI B B, ZHENG K. Effect of inert gas addition on syngas explosion [J]. Explosion and Shock Waves, 2019, 39(6): 065401. DOI: 10.11883/bzycj-2018-0131.
[4]	ZHENG K, YANG X F, YU M G, et al. Effect of N₂ and CO₂ on explosion behavior of syngas/air mixtures in a closed duct [J]. International Journal of Hydrogen Energy, 2019, 44(51): 28044–28055. DOI: 10.1016/j.ijhydene.2019.09.053.
[5]	胡洋, 吴秋遐, 庞磊, 等. 惰性气体抑制瓦斯爆燃火焰传播特性实验研究 [J]. 中国安全生产科学技术, 2021, 17(11): 72–78. DOI: 10.11731/j.issn.1673-193x.2021.11.011. HU Y, WU Q X, PANG L, et al. Experimental study on flame propagation characteristics of gas explosion suppression by inert gas [J]. Journal of Safety Science and Technology, 2021, 17(11): 72–78. DOI: 10.11731/j.issn.1673-193x.2021.11.011.
[6]	刘洋, 李展, 方秦, 等. 惰性气体和水蒸气对长直空间燃气爆炸超压及其振荡的抑制作用 [J]. 高压物理学报, 2021, 35(5): 055201. DOI: 10.11858/gywlxb.20200654. LIU Y, LI Z, FANG Q, et al. Inert gas and water vapor suppressing overpressure and its oscillation of gas explosion in long straight space [J]. Chinese Journal of High Pressure Physics, 2021, 35(5): 055201. DOI: 10.11858/gywlxb.20200654.
[7]	ZHUANG C J, WANG Z R, ZHANG K, et al. Explosion suppression of porous materials in a pipe-connected spherical vessel [J]. Journal of Loss Prevention in the Process Industries, 2020, 65: 104106. DOI: 10.1016/j.jlp.2020.104106.
[8]	DUAN Y L, WANG S, YANG Y L, et al. Experimental study on methane explosion characteristics with different types of porous media [J]. Journal of Loss Prevention in the Process Industries, 2021, 69: 104370. DOI: 10.1016/j.jlp.2020.104370.
[9]	SHAO H, WANG C, YU H K. Effect of copper foam on explosion suppression at different positions in the pipe [J]. Powder Technology, 2020, 360: 695–703. DOI: 10.1016/j.powtec.2019.09.078.
[10]	JIN K Q, WANG Q S, DUAN Q L, et al. Effect of ignition position on premixed hydrogen-air flame quenching behaviors under action of metal wire mesh [J]. Fuel, 2021, 289: 119750. DOI: 10.1016/j.fuel.2020.119750.
[11]	JIN K Q, DUAN Q L, CHEN J Y, et al. Experimental study on the influence of multi-layer wire mesh on dynamics of premixed hydrogen-air flame propagation in a closed duct [J]. International Journal of Hydrogen Energy, 2017, 42(21): 14809–14820. DOI: 10.1016/j.ijhydene.2017.03.232.
[12]	JIN K Q, WANG Q S, DUAN Q L, et al. Effect of single-layer wire mesh on premixed methane/air flame dynamics in a closed pipe [J]. International Journal of Hydrogen Energy, 2020, 45(56): 32664–32675. DOI: 10.1016/j.ijhydene.2020.08.159.
[13]	王燕, 程义伸, 曹建亮, 等. 核-壳型KHCO₃/赤泥复合粉体的甲烷抑爆特性 [J]. 煤炭学报, 2017, 42(3): 653–658. DOI: 10.13225/j.cnki.jccs.2016.0434. WANG Y, CHENG Y S, CAO J L, et al. Suppression characteristics of KHCO₃/red-mud composite powders with core-shell structure on methane explosion [J]. Journal of China Coal Society, 2017, 42(3): 653–658. DOI: 10.13225/j.cnki.jccs.2016.0434.
[14]	王亚军, 徐秀艳, 秦宪礼. 煤粉对泡沫金属抑制爆炸火焰波性能的影响规律 [J]. 煤炭学报, 2017, 42(11): 2885–2891. DOI: 10.13225/j.cnki.jccs.2017.0476. WANG Y J, XU X Y, QIN X L. Study on the influence regulation after adding coal dust for inhibition of flame wave of gas explosion by foam metal [J]. Journal of China Coal Society, 2017, 42(11): 2885–2891. DOI: 10.13225/j.cnki.jccs.2017.0476.
[15]	王亚军, 吴征艳, 赵红梅, 等. 煤粉对泡沫金属抑制爆炸火焰传播速度的影响分析 [J]. 煤矿安全, 2019, 50(11): 180–184. DOI: 10.13347/j.cnki.mkaq.2019.11.042. WANG Y J, WU Z Y, ZHAO H M, et al. Analysis of influence of pulverized coal on flame propagation velocity of foam metal [J]. Safety in Coal Mines, 2019, 50(11): 180–184. DOI: 10.13347/j.cnki.mkaq.2019.11.042.
[16]	裴蓓, 韦双明, 陈立伟, 等. CO_2-超细水雾对CH₄/Air初期爆炸特性的影响 [J]. 爆炸与冲击, 2019, 39(2): 025402. DOI: 10.11883/bzycj-2018-0147. PEI B, WEI S M, CHEN L W, et al. Effect of CO₂-ultrafine water mist on initial explosion characteristics of CH₄/Air [J]. Explosion and Shock Waves, 2019, 39(2): 025402. DOI: 10.11883/bzycj-2018-0147.
[17]	余明高, 杨勇, 裴蓓, 等. N₂双流体细水雾抑制管道瓦斯爆炸实验研究 [J]. 爆炸与冲击, 2017, 37(2): 194–200. DOI: 10.11883/1001-1455(2017)02-0194-07. YU M G, YANG Y, PEI B, et al. Experimental study of methane explosion suppression by nitrogen twin-fluid water mist [J]. Explosion and Shock Waves, 2017, 37(2): 194–200. DOI: 10.11883/1001-1455(2017)02-0194-07.
[18]	PEI B, LI J, WANG Y, et al. Synergistic inhibition effect on methane/air explosions by N₂-twin-fluid water mist containing sodium chloride additive [J]. Fuel, 2019, 253: 361–368. DOI: 10.1016/j.fuel.2019.05.035.
[19]	郭成成, 王飞, 刘红威, 等. 惰性气体-细水雾抑制瓦斯爆炸对比分析 [J]. 煤矿安全, 2018, 49(6): 164–167. DOI: 10.13347/j.cnki.mkaq.2018.06.043. GUO C C, WANG F, LIU H W, et al. Comparative analysis of gas explosion suppression by water mist of inert gas [J]. Safety in Coal Mines, 2018, 49(6): 164–167. DOI: 10.13347/j.cnki.mkaq.2018.06.043.
[20]	温小萍, 郭志东, 王发辉, 等. 一维多孔介质和超细水雾协同抑制瓦斯爆炸试验 [J]. 安全与环境学报, 2020, 20(2): 539–547. DOI: 10.13637/j.issn.1009-6094.2019.0114. WEN X P, GUO Z D, WANG F H, et al. Experimental approach to the synergistic inhibition of the gas explosion through the one-D porous media and the ultrafine water mist [J]. Journal of Safety and Environment, 2020, 20(2): 539–547. DOI: 10.13637/j.issn.1009-6094.2019.0114.
[21]	裴蓓, 韦双明, 余明高, 等. 气液两相介质抑制管道甲烷爆炸协同增效作用 [J]. 煤炭学报, 2018, 43(11): 3130–3136. DOI: 10.13225/j.cnki.jccs.2018.0064. PEI B, WEI S M, YU M G, et al. Synergistic inhibition effect on methane explosion in pipeline by gas-liquid two-phase medium [J]. Journal of China Coal Society, 2018, 43(11): 3130–3136. DOI: 10.13225/j.cnki.jccs.2018.0064.
[22]	魏春荣. 多孔材料对瓦斯爆炸抑制作用研究 [D]. 哈尔滨: 哈尔滨工业大学, 2012. DOI: 10.7666/d.D416500.
[23]	CLANET C, SEARBY G. On the “tulip flame” phenomenon [J]. Combust Flame, 1996, 105(1/2): 225–238. DOI: 10.1016/0010-2180(95)00195-6.
[24]	张晓萍. 基于多孔结构的泡沫金属散热器性能研究 [D]. 西安: 西安电子科技大学, 2021. DOI: 10.27389/d.cnki.gxadu.2021.002167.
[25]	CHEN P, HUANG F J, SUN Y D, et al. Effects of metal foam meshes on premixed methane-air flame propagation in the closed duct [J]. Journal of Loss Prevention in the Process Industries, 2017, 47: 22–28. DOI: 10.1016/j.jlp.2017.02.015.
[26]	CUI Y Y, WANG Z R, ZHOU K B, et al. Effect of wire mesh on double-suppression of CH₄/air mixture explosions in a spherical vessel connected to pipelines [J]. Journal of Loss Prevention in the Process Industries, 2017, 45: 69–77. DOI: 10.1016/j.jlp.2016.11.017.
[27]	段玉龙, 王硕, 贺森, 等. 多孔材料下气体爆炸转扩散燃烧的特性研究 [J]. 爆炸与冲击, 2020, 40(9): 095401. DOI: 10.11883/bzycj-2020-0009. DUAN Y L, WANG S, HE S, et al. Characteristics of gas explosion to diffusion combustion under porous materials [J]. Explosion and Shock Waves, 2020, 40(9): 095401. DOI: 10.11883/bzycj-2020-0009.