|本期目录/Table of Contents|

[1]王博,李阳,司永轩,等.ZR-BV单芯铜线过电流故障电弧熔痕特征研究[J].中国安全生产科学技术,2019,15(12):41-47.[doi:10.11731/j.issn.1673-193x.2019.12.007]
 WANG Bo,LI Yang,SI Yongxuan,et al.Study on characteristics of arc melting trace in over current fault of ZR-BV singlecore copper wire[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(12):41-47.[doi:10.11731/j.issn.1673-193x.2019.12.007]
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ZR-BV单芯铜线过电流故障电弧熔痕特征研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年12期
页码:
41-47
栏目:
特邀专栏
出版日期:
2019-12-31

文章信息/Info

Title:
Study on characteristics of arc melting trace in over current fault of ZR-BV singlecore copper wire
文章编号:
1673-193X(2019)-12-0041-07
作者:
王博李阳司永轩徐学岩荣彦超
(1.中国人民警察大学 研究生部三队,河北 廊坊 065000;
2.中国人民警察大学 火灾物证鉴定中心,河北 廊坊 065000;
3.开封市消防救援支队,河南 开封 475000;
4.西安科技大学 安全科学与工程学院,陕西 西安 710054)
Author(s):
WANG Bo LI Yang SI Yongxuan XU Xueyan RONG Yanchao
(1.Squad three of Graduate Faculty,China People’s Police University,Langfang Hebei 065000,China;
2.Fire Physical Evidence Appraisal Center,China People’s Police University,Langfang Hebei 065000,China;
3.Kaifeng Fire and Rescue Detachment,Kaifeng Henan 475000,China;
4.College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an Shaanxi 710054,China)
关键词:
电气火灾铜导线过电流宏观特征金相组织
Keywords:
electrical fire copper wire over current macroscopic characteristic metallographic structure
分类号:
X928.7
DOI:
10.11731/j.issn.1673-193x.2019.12.007
文献标志码:
A
摘要:
为准确认定电气火灾事故中的过电流故障,模拟在不同电流条件下ZR-BV单芯铜线的过电流故障,通过逐帧分析高速影像研究导线发生过电流故障时的变化过程,使用金相分析技术分类研究过电流导线电弧熔化痕迹的组织特征。结果表明:当I≥4Ie时,导线发生熔断,断路电弧将引燃热分解后的绝缘热解气体,造成火灾的蔓延扩大;过电流导线电弧熔断痕与火烧熔痕的宏观特征较为相似,但喷溅熔痕和发散状熔痕是过电流导线所特有的;枝晶偏析组织是过电流电弧熔断痕的典型组织,且随着电流值的升高,枝晶偏析组织分布范围明显扩大,几乎不再出现等轴状组织。
Abstract:
In order to identify the over current fault in the electrical fire accident accurately,the over current fault of ZR-BV singlecore copper wire under different current conditions was simulated.Through analyzing the highspeed images frame by frame,the change process of wire when occurring the over current fault was studied,and the structural characteristics of arc melting trace for the over current wire were classified and studied by using the metallographic analysis technology.The results showed that when I≥4Ie,the fusing of wire would occur,then the opencircuit arc would ignite the insulation after the thermal decomposition,which caused the spread and expand of fire.The macroscopic characteristics of arc melting trace and fire melting trace of the over current wire were similar,but the splash melting trace and divergent melting trace were peculiar to the over current wire.The dendritic segregation structure was the typical structure of over current arc melting trace,and the distribution range of dendritic segregation structure extended obviously with the increase of current,barely with the equiaxed structure.

参考文献/References:

[1]National Fire Protection Association.NFPA 921:Guide for fire and explosion investigations[M].National Fire Protection Association,2017.
[2]CHOI C,SHONG K,KIM D.Analysis of dispersive characteristics and structures of copper wire melted by overcurrent [J].Transactions on Electrical and Electronic Engineering,2005,125(12):1327-1331.
[3]BABRAUSKAS V.Research on electrical fires:the state of the art[C]//Fire Safety Science-Proceedings of the Ninth International Symposium,2008.
[4]张金专.过负荷时间和倍数对铜导线金相组织的影响[J].消防科学与技术,2009,28(7):543-545. ZHANG Jinzhuan.Effect of overload time and current on the metallurgical structure of copper wire[J].Fire Science and Technology,2009,28(7):543-545.
[5]KIM M K,CHUNG S H,FUJITA O.Effect of AC electrical fields on flame spread over electric wire[J].Proceedings of the Combustion Institute,2011,33(1):1145-1151.
[6]FUJITA O,KYONO T,KIDO Y.Ignition of electrical wire insulation with short-term excess electric current in microgravity[J].Proceedings of the Combustion Institute,2011,33(2):2617-2623.
[7]WRIGHT S A,LOUD J D,BLANCHARD R A.Globules and beads:what do they indicate about small-diameter copper conductors that have been through a fire?[J].Fire Technology,2015(5):1051-1070.
[8]HE H,ZHANG Q,TU R.Molten thermoplastic dripping behavior induced by flame spread over wire insulation under overload currents [J].Journal of Hazardous Materials,2016,320:628-634.
[9]HE H,WANG X,ZHANG Q.The Influence of currents on the ignition and correlative smoke productions for PVC-insulated electrical fire [J].Fire Technology,2017,53(3):1275-1289.
[10]ORCAJO G A A,PABLO A G,JOSUE R D,et al.Overcurrent protection response of a hot rolling mill filtering system:analysis of the process conditions[J].IEEE Transactions on Industry Applications,2017,53(3):2596-2607.
[11]罗希韬,王志奇,武景丽,等.基于热重红外联用分析的 PE,PS,PVC 热解机理研究[J].燃料化学学报,2012,40(9):1147-1152. LUO Xitao,WANG Zhiqi,WU Jingli,et al.Study on the pyrolysis mechanism of polyethylene,polystyrene,and polyvinyl chloride by TGA-FTIR[J].Journal of Fuel Chemistry,2012,40(9):1147-1152.
[12]陈宗民,于文强.铸造金属凝固原理[M].北京:北京大学出版社,2014.
[13]郭凤仪,李靖.电器学[M].北京:机械工业出版社,2013.
[14]COLIN P M.A Study of over-current protection,electrical arcing and fire protection[C]//51st AIAA Structural Dynamics and Materials Conference,2010.
[15]WANG X,HE H,ZHAO L,et al.Ignition and flame propagation of externally heated electrical wires with electric currents[J].Fire Technology,2016,52(2):533-546.

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备注/Memo

备注/Memo:
收稿日期: 2019-12-11
* 基金项目: 河北省重点研发计划自筹项目(17275611)
作者简介: 王博,硕士研究生,主要研究方向为电气火灾物证鉴定相关领域。
通信作者: 李阳,博士研究生,主要研究方向为电气火灾调查及物证鉴定。
更新日期/Last Update: 2020-01-09