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 ›› 2020, Vol. 39 ›› Issue (7): 969-972.

• • 上一篇    下一篇

细水雾扑救电气火灾有效性和安全性实验研究

王明武,陶波,李建伟,贺元骅
  

  1. (中国民用航空飞行学院,四川 广汉 618300)
  • 收稿日期:2020-02-19 出版日期:2020-07-15 发布日期:2020-07-15
  • 作者简介:王明武(1988-),男,湖南株洲人,中国民用航空飞行学院讲师,硕士,主要从事民用航空器防火安全、细水雾抑灭火等研究,四川省广汉市南昌路 4 段,618300。
  • 基金资助:
    中国民用航空飞行学院青年基金项目(J2018-51)

Experimental study on the effectiveness and safety of water mist in electrical fire fighting

WANG Ming - wu,TAO Bo,LI Jian - wei, He Yuan - hua   

  1. (China Academy of Civil Aviation, Sichuan Guanghan 618300, China)
  • Received:2020-02-19 Online:2020-07-15 Published:2020-07-15

摘要: 为探究工作压力对高压细水雾扑救电气火灾有效性和安全性的影响,在 4 m × 4 m × 5 m 的封闭环境中,针对同一型号的细水雾喷头在不同喷射压力下进行灭火实验。结果表明:增大喷头工作压力可增强细水雾灭电气火的有效性;不同工作压力下的细水雾,绝缘电阻下降率不同;随着工作压力变大,绝缘电阻下降速度呈现先减小后增大的趋势;喷头工作压力超过一定值时,细水雾对绝缘电阻的影响更显著。对于特定高压细水雾喷头,存在灭火效果好且水渍污染小的适合工作压力。

关键词: 细水雾, 喷头工作压力, 电气火灾, 绝缘电阻

Abstract: In order to explore the influence of working pressure on the effectiveness and safety of high - pressure water mist in electrical fire fighting, the fire fighting experiment was carried out in the closed environment of 4 m× 4 m× 5 m for the same type of water mist nozzle under different spraying pressures. The results show that increasing the working pressure of the nozzle can enhance the effectiveness of the water mist to extinguish the electric fire; under different working pressure, the decrease rate of the insulation resistance is different; with the increase of working pressure, the decrease rate of the insulation resistance first decreases and then increases; when the working pressure of the nozzle exceeds a certain value, the influence of the water mist on the insulation resistance is more significant. For a specific high - pressure water mist nozzle, there is a suitable working pressure with good fire - fighting effect and small water damage.

Key words: water mist, working pressure of nozzle, electrical fire; insulation resistance

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