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横向风作用下变压器油池火燃烧速率与火焰倾角关系研究

Research on the relationship between burning rate and flame inclination angle of transformer oil pool fire under transverse wind
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摘要 油浸式变压器多布置在室外环境,环境风是影响开放空间变压器火灾发展的关键因素。本文开展了不同风速下变压器油池火试验,分析了池火燃烧速率和火焰倾角等参数的变化规律,结果表明:环境风流的作用下,池火稳定燃烧速率呈现非单调演化规律,稳定燃烧速率随着风速的增加,呈现上升、下降、上升的趋势。由于浮力与油池直径呈正相关,火焰倾角与油池直径成反比;随风速增加,火焰倾角呈现快速增加,然后缓慢增加的趋势。对比了4种火焰倾角模型,得到了适用性最佳的变压器油火焰倾角模型。研究结果可为变压器火灾控制提供理论支撑。 Oil immersed transformers are mostly arranged in out⁃door environments,and environmental wind is a key factor affect⁃ing the development of open space transformer fires.This article conducted experiments on transformer oil pool fire under different wind speeds and analyzed the change rules in parameters such as pool fire combustion rate and flame inclination angle.The results showed that under the influence of environmental air flow,the stable burning rate of pool fire showed a non monotonic evolution law,and the stable burning rate showed a"rise,decrease,rise"trend with the increase of wind speed.Due to the positive correla⁃tion between buoyancy and the diameter of the oil pool,the flame inclination angle is inversely proportional to the diameter of the oil pool;As the wind speed increases,the flame tilt angle shows a trend of"rapid increase and slow increase".Four flame inclination models were compared and the most applicable transformer oil flame inclination model was obtained.The research results can provide theoretical support for transformer fire control.
作者 杨海铭 商少波 郑鑫 陈轩 Yang Haiming;Shang Shaobo;Zheng Xin;Chen Xuan(State Grid Jiangsu Electric Power Co.,Ltd.Ultra High Voltage Branch,Jiangsu Nanjing 210000,China)
出处 《消防科学与技术》 CAS 北大核心 2024年第1期34-38,共5页 Fire Science and Technology
关键词 变压器火灾 环境风 池火 火焰倾角 燃烧速率 transformer fire environmental wind pool fire flame inclination angle burning rate
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