氮气-细水雾-滑移装置对甲烷爆炸特性的影响

doi:10.16265/j.cnki.issn1003-3033.2022.10.1861

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (10): 83-89.doi: 10.16265/j.cnki.issn1003-3033.2022.10.1861

氮气-细水雾-滑移装置对甲烷爆炸特性的影响

段玉龙¹^,²^,³(), 卜云兵¹^,², 龙凤英¹^,², 李元兵¹^,², 黄俊¹^,², 俞树威¹^,²

¹ 重庆科技学院安全工程学院,重庆 401331
² 油气生产安全与风险控制重庆市重点实验室,重庆 401331
³ 河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地,河南焦作 454003

收稿日期:2022-04-22 修回日期:2022-08-11 出版日期:2022-10-28 发布日期:2023-04-28
作者简介:
段玉龙 (1982— ),男,重庆人,博士,副研究员,主要从事矿井火灾、爆炸、通风相关理论与技术等方面的研究。E-mail:dylnhz@126.com。
基金资助:
重庆市教委科学技术研究项目(KJQN202101503); 油气生产安全与风险控制重庆市重点实验室开放基金资助(cqsrc202111); 河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地开放基金资助(WS2021A04); 重庆科技学院科技创新研究生项目(YKJCX2020727)

Effect of N₂-water mist-slip device on methane explosion characteristics

DUAN Yulong¹^,²^,³(), BU Yunbing¹^,², LONG Fengying¹^,², LI Yuanbing¹^,², HUANG Jun¹^,², YU Shuwei¹^,²

¹ School of Safety Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
² Chongqing Key Laboratory of Oil and Gas Production Safety and Risk Control, Chongqing 401331, China
³ State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo Henan 454003, China

Received:2022-04-22 Revised:2022-08-11 Online:2022-10-28 Published:2023-04-28

摘要/Abstract

摘要：

为进一步探究多种抑爆技术之间的协同抑爆效应,在自行搭建的100 mm×100 mm×1 000 mm方形管道爆炸试验平台上,开展无压力(0 MPa)与低压力(0.1、0.2 MPa)氮气-细水雾、不同弹性系数(0.42、0.81 N/mm)限位滑移装置共同作用下甲烷爆炸特性试验研究。结果表明:受含氮气的细水雾与滑移装置耦合影响,“郁金香”形火焰结构发育受阻;滑移装置使燃烧区形成可变容受限空间,其体积大小与火焰传播速度成正比;各工况爆炸超压均出现衰减,且已燃区衰减率稍大于未燃区,2 种弹性系数下0.1 MPa氮气-细水雾作用时,已燃区超压峰值分别下降 12.92%和 16.07%,未燃区超压峰值分别下降11.97%和15.12%。

关键词: 甲烷爆炸, 氮气, 细水雾, 滑移装置, 可变容受限空间

Abstract:

In order to further explore the synergistic explosion suppression effect among various explosion suppression technologies, the methane explosion characteristics under the combined action of no pressure (0 MPa), low pressure (0.1, 0.2 MPa) nitrogen-water mist and different elastic coefficients (0.42, 0.81 N/mm) limit slip devices were carried out on a self-built 100 mm×100 mm×1 000 mm square pipeline explosion platform. The results show that the development of the "tulip"\|shaped flame structure is hindered by the coupling effect of the nitrogen-containing water mist and the sliding device, the sliding device makes the combustion zone form a variable-capacity restricted space, its volume is proportional to the flame propagation speed, the explosion overpressure in each working condition decayed, and the decay rate of the burned area was slightly greater than that of the unburned area. Under the action of 0.1 MPa nitrogen-water mist under the two elastic coefficients, the overpressure peak in the burned area decreased by 12.92% and 16.07%, respectively, and the overpressure peak in the unburned area decreased by 11.97% and 15.12%, respectively.

Key words: methane explosion, N₂, water mist, slipping device, variable capacity restricted space

段玉龙, 卜云兵, 龙凤英, 李元兵, 黄俊, 俞树威. 氮气-细水雾-滑移装置对甲烷爆炸特性的影响[J]. 中国安全科学学报, 2022, 32(10): 83-89.

DUAN Yulong, BU Yunbing, LONG Fengying, LI Yuanbing, HUANG Jun, YU Shuwei. Effect of N₂-water mist-slip device on methane explosion characteristics[J]. China Safety Science Journal, 2022, 32(10): 83-89.

图/表 11

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参考文献 18

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压力/ MPa	喷雾接触火焰时间/ms	火焰回退时间/ms	火焰焠熄时间/ms
0	—	78	140
0.1	41.5	72	145
0.2	42	73	155

C_e/ (N·mm^-1)	压力/ MPa	速度峰值/ (m·s^-1)	峰值下降率/%
0.42	0	12.53	0
	0.1	12.99	-3.67
	0.2	13.36	-6.62
C_e/ (N·mm^-1)	压力/ MPa	速度峰值/ (m·s^-1)	峰值下降率/%
0.81	0	13.74	0
	0.1	12.07	12.15
	0.2	12.67	7.79

C_e/ (N·mm^-1)	压力/ MPa	P'₁/ kPa	P'₁下降率/%	P'₂/ kPa	P'₂下降率/%
0.42	0	19.51	0	14.28	0
	0.1	16.99	12.92	12.57	11.97
	0.2	18.15	6.97	13.36	6.44
C_e/ (N·mm^-1)	压力/ MPa	P″₁/ kPa	P″₁下降率/%	P″₂/ kPa	P″₂下降率/%
0.81	0	23.64	0	13.82	0
	0.1	19.84	16.07	11.73	15.12
	0.2	21.61	8.59	12.68	8.25

氮气-细水雾-滑移装置对甲烷爆炸特性的影响

Effect of N₂-water mist-slip device on methane explosion characteristics

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序号	C_e/ (N·mm^-1)	压力/ MPa	雾通量/ (g·min^-1)
1	0.42	0	0
2	0.42	0.1	109.74
3	0.42	0.2	149.60
4	0.81	0	0
5	0.81	0.1	109.74
6	0.81	0.2	149.60

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氮气-细水雾-滑移装置对甲烷爆炸特性的影响

Effect of N2-water mist-slip device on methane explosion characteristics

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Effect of N₂-water mist-slip device on methane explosion characteristics