户内变压器火灾烟气及温度时空发展特性研究OA
Study on the Spatial and Temporal Development Characteristics of Fire Smoke and Temperature in Indoor Transformer
水喷雾系统是变压器火灾抑制的重要手段.文中针对配备水喷雾系统的变压器室,利用FDS软件对喷雾作用下的变压器室火灾发展进行了数值模拟研究,获得火灾发展过程中的变压器室温度变化和碳烟生成及分布规律.结果表明:对于无喷雾作用的情况,处于燃烧区域的观测点1的最高温度可以达到966℃,之后逐渐下降,最终在500℃附近波动.燃烧产生的碳烟产生后首先聚集于变压器室顶部,然后向四周扩散,最终逐渐弥漫整个变压器室.喷雾的作用主要体现在降低火灾进程中同一时间的热释放速率及温度,但对室内的烟羽流运动影响不大.喷雾液滴的运动与碳烟的运动轨迹接近.变压器室近壁面处的温度主要受到碳烟扩散的影响.
Water spray system is an important means for fire suppression of transformer.As for the transformer cham⁃ber equipped with water spray system,in this paper the FDS software is used to conduct numerical simulation re⁃search on the development of the fire in transformer chamber under the action of spray,and obtain the temperature variation and soot generation as well as distribution during the fire development process.The results show that in case of no spray the maximum temperature of observation point 1 in the combustion zone can reach 966℃,then grad⁃ually decreases and finally fluctuates around 500℃.The soot generated by combustion firstly accumulates at the top of the transformer chamber,then spreads around,and at last gradually diffuses throughout the entire transformer cham⁃ber.The role of the spray is mainly reflected in reducing the heat release rate and temperature at the same time during the fire process,but it has little effect on the indoor smoke plume movement.The motion of spray droplets is close to that of soot.The temperature near the wall of the transformer chamber is mainly affected by the diffusion of soot.
苏文;范明豪;王海伟;杨康博;黄钰期
国网安徽省电力有限公司电力科学研究院,合肥 230022国网安徽省电力有限公司电力科学研究院,合肥 230022国网安徽省电力有限公司合肥分公司,合肥 230022浙江大学能源工程学院,杭州 310027浙江大学能源工程学院,杭州 310027
变压器室火灾动力学模拟(FDS)水喷雾
transformer chamberfire dynamics simulation(FDS)water spray
《高压电器》 2026 (4)
74-81,8
国网安徽省电力有限公司科技项目(B3120522001D).Project Supported by Science and Technology Project of State Grid Anhui Electric Power Co.,Ltd.(B3120522001D).
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