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 ›› 2023, Vol. 42 ›› Issue (9): 1197-1200.

• • 上一篇    下一篇

不同环境压力与倾角下电缆火燃烧特性研究

丁超, 李雨遥, 何凌峰, 焦艳   

  1. (安徽建筑大学 环境与能源工程学院,安徽 合肥 230601)
  • 出版日期:2023-09-15 发布日期:2023-09-15
  • 作者简介:丁 超(1988- ),男,安徽亳州人,安徽建筑大学环境与能源工程学院副教授,博士,主要从事建筑火灾与防控技术等工作,安徽省合肥市蜀山区紫云路292号,230601。
  • 基金资助:
    基金项目:安徽省高校优秀青年科研项目(2022AH030037);安徽省高校优秀青年人才支持计划项目(gxyqZD2022058)

Study on the combustion characteristics of cable fire under different ambient pressure and inclination angle

Ding Chao, Li Yuyao, He Lingfeng, Jiao Yan   

  1. (College of Environmental and Energy Engineering, Anhui Jianzhu University, Anhui Hefei 230601, China)
  • Online:2023-09-15 Published:2023-09-15

摘要: 在变压力实验舱内进行了电缆燃烧试验。通过改变舱内环境压力和电缆的摆放角度,测量了火蔓延过程中电缆的燃烧速率及电缆上方的温度、辐射热等燃烧特性参数,并对测得数据进行了处理和分析。结果表明,压力的降低会影响火焰的热反馈。在倾角为90°时,不同环境压力对应的燃烧速率分别为0.019 96、0.020 55、0.021 26、0.023 60 g/s,两者正相关。在环境压力为101 kPa时,不同倾角对应的燃烧速率分别为0.009 41、0.017 28、0.020 29、0.023 60 g/s,燃烧速率随着倾角的增大而加快。而峰值燃烧速率与燃烧增强因子的关系反映了火蔓延的增长情况。

关键词: 电缆火, 压力, 倾角, 燃烧特性

Abstract: In this paper, cable combustion experiments were conducted in a variable pressure experimental chamber. We measured the burning rate of the cable and the combustion characteristics parameters such as temperature and radiant heat above the cable during the fire spread by changing the ambient pressure and the cable placement angle in the chamber, and processed and analyzed the measured data. The results show that the decrease in pressure affects the heat feedback of the flame. When the inclination is 90°, the burning rates corresponding to different environmental pressures are 0.019 96, 0.020 55, 0.021 26 g/s and 0.023 60 g/s, and the two are positively correlated. When the ambient pressure is 101 kPa, the burning rates corresponding to different inclination angles are 0.009 41, 0.017 28, 0.020 29 g/s and 0.023 60 g/s, and the burning rate accelerates with increasing inclination angle. The relationship between the peak burning rate and the combustion enhancement factor reflects the growth of fire spread.

Key words: cable fire, pressure, inclination, combustion characteristics