Fire | |
Experimental Study on Fire Suppression of the Outdoor Oil-Immersed Transformer by High-Pressure Water Mist System | |
article | |
Huaitao Song1  Haowei Yao1  Xiaoge Wei1  Hengjie Qin1  Youxin Li1  Kefeng Lv1  Qianlong Chen1  | |
[1] School of Building Environment Engineering, Zhengzhou University of Light Industry | |
关键词: oil-immersed transformer fire; high-pressure water mist system; fire suppression test; burning characteristics; similarity model; | |
DOI : 10.3390/fire6060238 | |
学科分类:环境科学(综合) | |
来源: mdpi | |
【 摘 要 】
Fire accidents due to oil-immersed transformers seriously threaten the safe operation of power systems. In this paper, the similarity principle was used to design a high-pressure water mist fire-extinguishing test platform for a small-scale transformer fire, and the design method achieved a good fire extinguishing effect. The results indicate that a deflagration phenomenon, lasting about 2–4 s, could be observed after activating the high-pressure water mist system; the flame temperature rose rapidly at first, then dropped sharply, and finally cooled to the indoor temperature. The nozzle’s flow rate in this system has a significant impact on the fire extinguishing time. Meanwhile, the adjustment of the upper nozzle height also influenced the fire suppression effectiveness of the system, where a height of 1800 mm achieved the best performance compared to the others. In addition, the ambient wind speed is a very unfavorable factor for transformer fire suppression, where the fire extinguishing efficiency decreases rapidly with the increase in wind speed. Therefore, under low wind speed conditions, the high-pressure water mist system has great advantages in the fire suppression of outdoor oil-immersed transformers, and the above research results can provide a reference for the optimization design of this system.
【 授权许可】
CC BY
【 预 览 】
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RO202307010003763ZK.pdf | 3847KB | download |