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 (12): 1645-1648.

• • 上一篇    下一篇

小尺度变压器油池火灾燃烧特性的实验研究

郭王勇1，罗剑飞1，魏旭2，邓洁清2，陈鹏3   

  1. 1. 国网电力科学研究院有限公司，江苏南京211106；2. 国网江苏省电力有限公司，江苏南京210024；3. 中国矿业大学（北京）应急管理与安全工程学院，北京100086
  • 出版日期:2020-12-15 发布日期:2020-12-15
  • 作者简介:郭王勇（1977-)，男，山东人，国网电力科学研究院有限公司党委书记，高级工程师，硕士，主要从事电力系统及自动化研究，江苏省南京市诚信大道19 号，211106。
  • 基金资助:
    国家电网公司科技项目“大型充油设备泡沫细水雾涡扇炮智能灭火技术研究与应用”（SGTYHT/18-JS-206）

Experimental study on the fire combustion characteristcs of small-scale transformer oil pool fire

GUO Wang-yong1, LUO Jian-fei1, WEI Xu2, DENG Jie-qing2, CHEN Peng3   

  1. (1. State Grid Electric Power Research Institute Co., Ltd.,Jiangsu Nanjing 211106, China; 2. State Grid Jiangsu Electric Power Co., Ltd., Jiangsu Nanjing 210024, China; 3. School of Emergency Management and Safety Engineering, China University of Mining & Technology (Beijing), Beijing 100086, China
  • Online:2020-12-15 Published:2020-12-15

摘要：

开展了直径20～50 cm 的圆形变压器油池火实验，分别测量并研究了火焰形态、燃烧速率、火焰轴心温度等燃烧特性。结果表明：在变压器油燃烧的3 个阶段中，稳定燃烧阶段持续时间最长，而衰减熄灭阶段要明显短于起始燃烧阶段。在燃烧速率方面，油池的直径越大，变压器油燃烧速率越快，燃烧时间越短，变压器油的液位下降速度也越快。变压器油的单位面积燃烧速率与经典辐射模型具有良好的一致性，单位面积燃烧速率与油池直径呈现幂函数形式。在火焰温度方面，油池中心线温度呈现距离液面的垂直高度越大其火焰温度越低的趋势，液面上方火焰温度最高可达700～800 ℃，同时油池火尺度对火焰最高温度的影响不大。

关键词: 变压器油, 油池火, 燃烧速率, 火焰温度, 火焰高度

Abstract:

The experiments of transformer oil pool fire in circular pans with a diameter of 20 cm to 50 cm were conducted. The combustion characteristics such as flame shape, burning rate and flame temperature were measured and studied. The results showed that the combustion process of transformer oil can be divided into three stages, the duration of stable combustion stage is the longest, and the extinction stage is obviously shorter than initial combustion stage. In terms of burning rate, larger diameter of transformer oil pool fire would cause the faster burning rate, shorter combustion time, and faster drop of level height.The burning rate per unit area is in good consistence with classical radiation model. The burning rate and the pool diameter present a power function. In terms of flame temperature, the flame temperature is decreasing gradually from bottom to top,and the maximum value is about 700~800 ℃. The scale has little effect on the maximum temperature.

Key words: transformer oil, oil pool fire, burning rate, flame temperature, flame height