受限空间射流火形成和发展影响因素研究

doi:10.16265/j.cnki.issn1003-3033.2020.07.006

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (7): 35-40.doi: 10.16265/j.cnki.issn1003-3033.2020.07.006

受限空间射流火形成和发展影响因素研究

陈庆¹ 研究员, 魏旭¹, 陈光², 徐亮², 陈鹏^**3 教授, 刘洋³

1 国网江苏省电力有限公司,江苏南京 210024;
2 国网电力科学研究院有限公司,江苏南京 211106;
3 中国矿业大学(北京) 应急管理与安全工程学院,北京 100086

收稿日期:2020-04-12 修回日期:2020-06-16 出版日期:2020-07-28
作者简介:陈庆 (1962—),男,江苏徐州人,硕士,研究员,主要从事电力系统继电保护、电力系统自动化和电力系统分析方面的工作。E-mail:Lw_dianlixiaofang@163.com。
基金资助:
国家电网公司科技项目(8000-201918445A-0-0-00)。

Study on influence factors of formation and development of jet fire in confined space

CHEN Qing¹, WEI Xu¹, CHEN Guang², XU Liang², CHEN Peng³, LIU Yang³

1 State Grid Jiangsu Electric Power Co., Ltd., Nanjing Jiangsu 210024, China;
2 State Grid Electric Power Research Institute Co., Ltd., Nanjing Jiangsu 211106,China;
3 School of Emergency Management & Safety Engineering, China University of Mining & Technology Beijing, Beijing 100086, China

Received:2020-04-12 Revised:2020-06-16 Published:2020-07-28

摘要/Abstract

摘要： 为防控换流变火灾的发生,确保电网的正常运行,研究换流变内变压器油的量、铁芯及绕组等所占体积对射流火形成和发展的影响。首先,搭建小型变压器油燃烧试验平台,分析受限空间射流火产生、发展、熄灭等阶段火焰形式;然后,改变变压器油的量,分析各阶段射流火形态的变化;最后,改变钢珠填充量,分析射流火形态。研究结果表明:沸腾液体蒸发蒸气爆炸 (BLEVE)现象是喷射高度达到最高的关键点;减少罐内变压器油的充装量后罐内整体能量降低,这导致各阶段火焰高度降低,且各阶段火焰显现时刻出现延后;加入2.4 dm³钢珠后,罐底热阻增大,而钢珠表面的突起或凹陷为沸腾过程的气泡提供气化核心,降低液相过热度,强化传热效果,使火焰高度大幅降低的同时,将射流火出现时刻延迟52.91%。

关键词: 受限空间, 射流火, 变压器油, 沸腾液体蒸发蒸气爆炸(BLEVE), 充装量

Abstract: In order to prevent and control transformer oil fire and ensure normal operation of power grid, influence of transformer oil volume, core and winding volume on formation and development of jet fire was studied. Firstly, a small transformer oil combustion test platform was built, and fire forms in confined space were analyzed at generation, development and extinction stages. Secondly, changes of fire forms in each stage were analyzed after changing quantity of transformer oil. Finally, same analysis was carried out for changes of ball filling quantity. The results show that BLEVE is a key point for the biggest jet height. As quantity of transformer oil reduces, overall energy in the tank is lowered, causing a drop of flame height and delay of fire appearance at each stage. After adding 2.4 dm³ steel balls to tank, thermal resistance at bottom increases. Moreover, their protrusions or depressions provide a gasification core for bubbles in boiling process, thus decreasing liquid superheat and enhancing heat transfer. As a result, flame height is lowered significantly and time of jet fire is delayed by 52.91%

Key words: confined space, jet fire, transformer oil, boiled liquid evaporate vapor explosion (BLEVE), filling quantity

中图分类号:

X934

陈庆, 魏旭, 陈光, 徐亮, 陈鹏, 刘洋. 受限空间射流火形成和发展影响因素研究[J]. 中国安全科学学报, 2020, 30(7): 35-40.

CHEN Qing, WEI Xu, CHEN Guang, XU Liang, CHEN Peng, LIU Yang. Study on influence factors of formation and development of jet fire in confined space[J]. China Safety Science Journal, 2020, 30(7): 35-40.

参考文献

[1] 汪亚龙, 黎昌海, 张佳庆,等. 油浸式变压器火灾事故的特点与灭火对策研究[J]. 安全与环境工程, 2019,26(6): 166-171.
WANG Yalong, LI Changhai, ZHANG Jiaqing, et al. Fire accident characteristics and fire extinguishing countermeasures of oil-immersed transformer[J]. Safety and Environmental Engineering, 2019,26(6): 166-171.
[2] REID R C. Possible mechanism for pressurized liquid tank explosions or BLEVE's[J].Science, 1979,203 (4386): 1 263-1 265.
[3] VENART J E S, RUTLEDGE G A, SUMATHIPALA K, et al. To BLEVE or not to BLEVE: analomy of a boiling liquid expanding vapor explosion[J]. Process Safety Progress, 1993, 12(2): 67-70.
[4] 淮秀兰, 俞昌铭. 盛有液化气的压力容器在高温环境下的热响应[J]. 油气储运, 1993, 12(4): 18-22.
HUAI Xiulan,YU Changming. Thermal response of pressure vessel containing liquefied gas in high temperature environment[J]. Oil & Gas Storage and Transportation, 1993, 12(4): 18-22.
[5] 邢志祥. 液化石油气储运容器不同受热条件下的温度压力的估算[J]. 火灾科学, 2000,9(3): 65-70.
XING Zhixiang. Simplified method of calculating the temperature and pressure in LPG storage tank under different heating condition[J]. Fire Safety Science, 2000,9(3): 65-70.
[6] 邢志祥. 液化石油气爆炸火灾事故潜在危险区的预测[J]. 消防技术与产品信息, 1998(9): 10-12.
XING Zhixiang. Prediction of potential danger zone of LPG explosion fire accident[J]. Fire Technique and Products Information, 1998(9): 10-12.
[7] 邢志祥, 常建国, 蒋军成. 液化石油气储罐对火灾热响应的CFD 模拟[J]. 天然气工业, 2005,25(5): 115-117.
XING Zhixiang, CHANG Jianguo, JIANG Juncheng. CFD simulation of LNG tanks thermally responding to fire[J]. Natural Gas Industry, 2005,25(5): 115-117.
[8] 王庆慧,邹伟,荣皓月. BLEVE超压模型与试验对比分析[J]. 安全与环境学报,2016,16(4): 116-120.
WANG Qinghui, ZOU Wei, RONG Haoyue. BLEVE overpressure model and its experimental comparative analysis[J]. Journal of Safety and Environment, 2016, 16(4): 116-120.
[9] 尚拓强. 沸腾液体扩展蒸汽爆炸(BLEVE)微观演化机理的模拟研究[D]. 北京:北京化工大学,2012.
SHANG Tuoqiang. Early evolution and physic characteristics of BLEVE by numerical simulation[D].Beijing: Beijing University of Chemical Technology,2012.
[10] 朱学良,宋泽阳,潘旭海,等. 过热液体储罐泄漏闪蒸射流行为特性试验研究[J]. 中国安全科学学报, 2019, 29(10): 117-123.
ZHU Xueliang, SONG Zeyang, PAN Xuhai, et al. Experimental study on characteristics of flashing jet released from superheated liquid tank[J]. China Safety Science Journal, 2019, 29(10): 117-123.
[11] 刘少杰,刘鹏翔,雷婷,等. 天然气管道泄漏喷射火燃烧特性研究[J]. 安全与环境学报,2017,17(6): 146-152.
LIU Shaojie, LIU Pengxiang, LEI Ting, et al. On the field testing and the analysis of the anoxia asphyxia in the confined space for pipeline heating treatment[J]. Journal of Safety and Environment, 2017, 17(6): 146-152.
[12] 闫伟阳,潘旭海,汪志雷,等. 高压氢气泄漏自燃形成喷射火的实验研究[J]. 爆炸与冲击,2019,39(11): 134-143.
YAN Weiyang, PAN Xuhai, WANG Zhilei, et al. Experimental investigation on spontaneous combustion of high-pressure hydrogen leakage to form jet fire[J]. Explosion and Shock Waves, 2019, 39(11): 134-143.

受限空间射流火形成和发展影响因素研究

Study on influence factors of formation and development of jet fire in confined space

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 11

编辑推荐

Metrics

本文评价

[1]	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.
[2]	张佳庆, 尚峰举, 何旭, 杨寒冰, 孔得朋. 变压器油沸溢池火温度特征及传热模型试验研究^*[J]. 中国安全科学学报, 2021, 31(11): 106-113.
[3]	徐胜, 金龙哲, 徐明伟. 受限空间钻孔工人的肌肉疲劳特性研究[J]. 中国安全科学学报, 2019, 29(3): 76-81.
[4]	高林杰, 徐海顺, 苏登. 超细碳酸氢钠抑制玉米淀粉空气混合物爆炸试验[J]. 中国安全科学学报, 2018, 28(8): 49-54.
[5]	李阳超, 杜扬, 王世茂, 齐圣, 李国庆. 半受限空间油气无约束泄爆外场特性研究[J]. 中国安全科学学报, 2017, 27(8): 50-55.
[6]	赵晓亮, 齐庆杰, 葛少成, 韩方伟, 吕雪, 毕文艺. 受限空间气泡雾化尘-雾粒径耦合试验研究[J]. 中国安全科学学报, 2017, 27(3): 129-134.
[7]	高娜，张延松，胡毅亭，彭金华. 受限空间瓦斯爆炸链式反应动力学分析[J]. 中国安全科学学报, 2014, 24(1): 60-.
[8]	贾宝山，温海燕，梁运涛，王小云. 受限空间瓦斯爆炸与氢气促进机理研究[J]. 中国安全科学学报, 2012, 22(2): 81-.
[9]	郑立刚，余明高，贾海林. 标准受限空间内细水雾熄灭煤油火的实验和数值模拟[J]. 中国安全科学学报, 2007, 17(1): 81-.
[10]	戚宜欣，杜红兵，周心权，赵国堂. 运动受限空间内火灾研究的现状与展望[J]. 中国安全科学学报, 2000, 10(4): 6-.
[11]	张和平，周晓冬，万玉田，霍然，范维澄. 受限空间烟气运动盐水模拟研究的现状和展望[J]. 中国安全科学学报, 1999, 9(1): 30-.