Experimental study on the atomization characteristics of fire spray

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (9): 1241-1244.

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Experimental study on the atomization characteristics of fire spray

GUO Peng-yu¹, WANG Ming-min¹,WU Liu-suo², WANG Jing-wei², CHEN Peng³,REN Xiao-feng³

1. State Grid Jiangsu Electric Power Co.,Ltd., Jiangsu Nanjing 210024,China; 2. State Grid Electric Power Research Institute Co.,Ltd., Jiangsu Nanjing 211106,China; 3. School of Emergency Management and Safety Engineering,China University of Mining & Technology (Beijing),Beijing 100083,China

Online:2020-09-15 Published:2020-09-21

Abstract

Abstract: In order to analyze the atomization characteristics of water spray for transformer fire extinguishment, the spray particle size under different parameters was measured by an independently established limited space experiment system, and then the influence of nozzle installation angle, nozzle diameter and spray pressure on nozzle atomization characteristics was analyzed. The results show that: when the nozzle installation angle is 0 ̊,10 ̊,20 ̊,30 ̊,the characteristic particle diameters D10, D50,D90 and volume average particle diameter are negatively and positively correlated with spray pressure and nozzle diameter,respectively. At 4 MPa, each characteristic particle size value is the least. After comprehensive analysis, it can be seen that the optimal installation angle is when the nozzle installation angle is 10̊.

Key words: transformer fire, droplet size, water spray, atomization characteristics

GUO Peng-yu, WANG Ming-min, WU Liu-suo, WANG Jing-wei, CHEN Peng, REN Xiao-feng. Experimental study on the atomization characteristics of fire spray[J]. Fire Science and Technology, 2020, 39(9): 1241-1244.

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