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 ›› 2021, Vol. 40 ›› Issue (6): 847-850.

• • 上一篇    下一篇

平行双电缆火蔓延特性及预测模型研究

贾伯岩1,张鹏1,王涛2,徐亚兵1,朱国庆2,3,安伟光2,3   

  1. 1. 电力科学研究院,国网河北省电力有限公司,河北石家庄050000;2. 中国矿业大学安全工程学院,江苏徐州221116;3. 中国矿业大学江苏省城市地下空间火灾防护高校重点实验室,江苏徐州221116
  • 出版日期:2021-06-15 发布日期:2021-06-15
  • 作者简介:贾伯岩(1978-),男,河北保定人,国网河北省电力有限公司电力科学研究院设备评价中心主任,正高级工程师,硕士,主要从事输变电设备电气试验、状态评价,输电线路复合外绝缘性能检测、故障分析、性能改进等方面的工作和研究,河北省石家庄市体育南大街238 号,050000。
  • 基金资助:
    国家电网公司总部科技项目(5200-201932093A-0-0-00);国家自然科学基金项目(51974298)

Study on fire spread model characteristics and forcasting of parallel double cables

JIA Bo-yan1,ZHANG Peng1,WANG Tao2, XU Ya-bing1,ZHU Guo-qing2,3, AN Wei-guang2,3   

  1. 1. Electric Power Research Institute, State Grid Hebei Electric Power Co., Ltd., Hebei Shijiazhuang 050000, China; 2. School of Safety Engineering, China University of Mining and Technology, Jiangsu Xuzhou 221116, China; 3. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Jiangsu Xuzhou 221116, China
  • Online:2021-06-15 Published:2021-06-15
  • Contact: 安伟光,中国矿业大学安全工程学院教授。

摘要: 电缆广泛应用于城市建筑和工业场所,一旦电缆被点燃将会造成严重的后果。而电缆在敷设时并非单根,故本文以水平方向上的平行双电缆为研究对象,通过对其燃烧过程中的3种传热方式进行分析,建立预测火蔓延速度的数学模型。开展水平方向上的平行双电缆火蔓延实验研究,分析电缆间距对火蔓延特性的影响,发现火焰高度、火焰宽度、火蔓延速度随间距的增大而先增大后减小,实验结果和模型预测结果较一致。

关键词: 平行双电缆, 电缆间距, 传热, 火蔓延速度, 火焰尺寸

Abstract: Cables are widely used in urban buildings and industrial sites. Once the cable is ignited, it will cause serious consequences. The cable is not only one when laying, so this paper takes the parallel double cables in the horizontal direction as the research object. By analyzing the three thermal transfer modes in the combustion process, a mathematical model for predicting the flame spread rate is established. An experimental study on the flame spread of parallel double cables in the horizontal direction is carried out and the influence of cable spacing on flame spread characteristics are analyzed. The flame width and the flame height increased first and then decreased with the increasing of the cable distance, the flame spread rate also increased first and then decreased with the increasing of the cable spacing. The experimental results are in good agreement with the model prediction results.

Key words: parallel double cables, cable spacing, thermal transfer, flame spread rate, flame size