主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (11): 1609-1612.

• • 上一篇    下一篇

一起爆燃事故调查与分析

辛志彬1，吕东2   

  1. 1. 青岛市消防救援支队，山东青岛266071；2. 应急管理部天津消防研究所，天津300381
  • 出版日期:2020-11-15 发布日期:2020-11-15
  • 作者简介:辛志彬（1977-），男，甘肃兰州人，青岛市消防救援支队火调技术处工程师，硕士，主要从事火灾事故调查工作，山东省青岛市市南区金湖路16 号，266071。
  • 基金资助:
    应急管理部天津消防研究所基本科研业务费项目“自扩散情况下加氢场所量化风险模拟及氢爆自由基湮灭试剂研究”（2019SJ10）

Investigation and analysis of a deflagration accident

XIN Zhi-bin1, LV Dong2   

  1. 1. Qingdao Fire and Rescue Division, Shandong Qingdao 266071, China; 2. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China
  • Online:2020-11-15 Published:2020-11-15

摘要： 针对一起电焊施工引发爆燃的事故调查，通过现场勘验、调查询问、模拟试验和红外热成像分析等手段，排除了焊渣掉落起火和吸烟起火等原因。在深入研究了电焊回路起火的机理后，提出了在大电流电焊引弧的过程中，焊接回路中不牢固的接触部位会形成局部过热和高温，能引发周围可燃物起火，为电焊火灾事故调查提供一些新的思路。

关键词: 火灾调查, 现场勘验, 模拟试验, 焊接回路, 爆燃

Abstract: Based on investigating an accident of deflagration caused by electric welding construction, on- site inspection, investigation and inquiry, simulation test and infrared thermal imaging analysis were conducted and the causes of welding slag falling and smoking were excluded. After in-depth study of the mechanism of fire in the welding circuit, it was proposed that in the process of high-current arc welding, the weak contact parts in the welding circuit will form local overheating and high temperature, which can cause the fire on surrounding combustibles. The paper provides some new ideas for fire investigation of electric welding.

Key words: fire investigation, site investigation, simulation test, welding circuit; deflagration