风速对变压器细水雾系统喷雾强度影响试验研究  

Study on the effect of external wind speed on the spray intensity of transformer water mist system

作　　者：陈强 石晓龙 林刚 王栋 Chen Qiang;Shi Xiaolong;Lin Gang;Wang Dong(Hefei KDLian Safety Technology Co.Ltd.,Anhui Hefei 230088,China;State Grid Henan Electric Power Research Institute,State Grid Henan Electric Power Company,Henan Zhengzhou 450052,China)

机构地区：[1]合肥科大立安安全技术有限责任公司,安徽合肥230088 [2]国网河南省电力公司电力科学研究院,河南郑州450052

出　　处：《消防科学与技术》2023年第9期1246-1251,共6页Fire Science and Technology

基　　金：国家电网公司总部科技项目(5200-202024105A-0-0-00)。

摘　　要：为了研究变压器细水雾系统喷雾强度在不同外加风速下的变化规律,搭建110 kV变压器实体试验平台,采用2种流量系数的细水雾喷头,设计了5种不同风速下的细水雾冷喷试验,并通过设置的58个集水盒收集细水雾系统冷喷后的水量,以此分析不同外加风速对变压器细水雾系统喷雾强度的影响。结果表明:当外加风速超过4 m/s时,细水雾的作用效果明显受到影响,对变压器的喷雾强度开始降低。随着外加风速的增大,喷雾强度呈现出逐渐减小的趋势。另外,在相同的外加风速和工作压力下,流量系数K=2.0的细水雾喷头比K=1.7的喷头喷雾效果更好,其在自身较大流量的优势下,对外加风速的“抵抗能力”更强。In order to study the change law of the spray intensity of the transformer water mist system under different external wind speeds,a 110 kV transformer physical experiment platform was built.Using the water mist nozzles with two flow coefficients,five cold spray experiments of water mist under different wind speeds were designed.The influence of different wind speeds on the spray intensity of the transformer water mist system was analyzed.The results show that when the applied wind speed exceeds 4 m/s,the effect of water mist is obviously affected,and the spray intensity on the transformer starts to decrease.In addition,with the increase of the applied wind speed,the spray intensity showed a decreasing trend.In addition,under the same external wind speed,nozzle with a flow coefficient of K=2.0 has a better spray effect than that with a flow coefficient of K=1.7 under the same working pressure and wind speed,and its"resistance"to external wind speed is stronger than the nozzle with a flow coefficient of K=1.7 under its own advantage of larger flow.

关 键 词：外加风速 变压器 细水雾系统 喷雾强度 

分 类 号：X913.4[环境科学与工程—安全科学] TM411[电气工程—电器]