特高压换流站消防机器人长距离输送压缩空气泡沫有效性研究  

Study on effectiveness of long-distance compressed air foam delivery by firefighting robots at ultra-high voltage converter stations

作　　者：何灵欣 张佳庆 刘睿 季陈鹏 郭文文 HE Lingxin;ZHANG Jiaqing;LIU Rui;JI Chenpeng;GUO Wenwen(Power Science Research Institute of State Grid Anhui Electric Power Co.,Hefei Anhui 230601,China;College of Textile Science and Engineering,Jiangnan University,Wuxi Jiangsu 214122,China)

机构地区：[1]国网安徽省电力有限公司电力科学研究院,安徽合肥230601 [2]江南大学纺织科学与工程学院,江苏无锡214122

出　　处：《中国安全生产科学技术》2024年第8期150-157,共8页Journal of Safety Science and Technology

基　　金：国网安徽省电力有限公司科技项目(52120523000Y)。

摘　　要：为厘清压缩空气泡沫从产生装置运输至举高消防机器人过程中的可靠性,选用Fluent模拟软件对压缩空气泡沫在管道内的压降进行数值模拟研究。研究结果表明:在气液比6∶1~10∶1范围内,压缩空气泡沫在长距离运输过程中的压降随着气液比的增大而增大,硬管末端10∶1泡沫的压降可达到6∶1泡沫的1.7倍;在相同气液比混合比、供液流量条件下,硬管段中的压降与运输距离成正相关,运输至315 m处达到最大值166 kPa。接驳口前后存在较大的压降,其压降值大于硬管段输送150 m处的压降,是其1.18倍;软管段中的压降在运输过程中爬升阶段的下降尤为显著。气液比、运输距离、管径及高度变化是影响压缩空气泡沫运输过程中压降变化的主要因素,其中管径和高度的影响尤为显著。研究结果可为举高消防机器人在特高压换流站的应用提供一定的理论参考。In order to clarify the reliability of transporting the compressed air foam from the generator to the lifting firefighting robot,the Fluent simulation software was used to carry out numerical simulation research on the pressure drop of compressed air foam in the pipeline.The results show that within the range of gas-liquid ratio from 6∶1 to 10∶1,the pressure drop of compressed air foam in the long-distance transportation process increases with the increase of gas-liquid ratio,and the pressure drop of foam in 10∶1 at the end of hard pipe is 1.7 times as much as that of the foam in 6∶1.Under the same air-liquid ratio,mixing ratio,and supply flow rate,the pressure drop in the hard pipe section is positively correlated with the transportation distance,and reaches the maximum value of 166 kPa at the transportation to 315 m.There exists a large pressure drop before and after the connection port,and the value of which is greater than that at the transportation of 150 m in the hard pipe section and is 1.18 times of it.The pressure drop in the hose section is particularly significant during the climbing stage of transportation process.The gas-liquid ratio,transport distance,pipe diameter and height change are the main factors affecting the pressure drop change during the transportation of compressed air foam,and the influence of pipe diameter and height is particularly significant.The research results can provide certain theoretical reference for the application of lifting firefighting robots in extra-high voltage converter stations.

关 键 词：泡沫 多相流 非牛顿流体 数值模拟 接驳口 

分 类 号：X932[环境科学与工程—安全科学]