海上变电站高压细水雾灭火系统分析及应用

Analysis and Application of High Pressure Water Mist Fire Extinguishing System in Offshore Substation

[目的]文章旨在降低海上变电站平台失火导致区域油田群停产或重大损失的风险。[方法]以某海上变电站为例,分析了高压细水雾灭火系统适应性和适用范围;通过国内外规范和设备参数特性的对标分析与计算,提出了海上变电站电气设备不同灭火型式的参数选取和应用方法。[结果]研究表明:含油电气一次设备且房间高大时,采用高压细水雾局部应用系统,且喷雾强度以不低于1.5 L/(min·m^(2))为宜。当兼顾设备防水等级与设备散热不具有经济性时,电气二次设备采用七氟丙烷灭火系统为宜。[结论]研究成果可以为海上变电站灭火系统的建设提供参考。

[Introduction]This paper aims to reduce the risk of shutdown or heavy loss of regional oil fields caused by platform fire in offshore substation.[Method]Taking an offshore substation as an example,the adaptability and application scope of high pressure water mist fire extinguishing system were analyzed.Through the benchmarking analysis and calculation of domestic and foreign specifications and equipment parameter characteristics,the parameter selection and application methods of different fire extinguishing types of electrical equipment in offshore substations were proposed.[Result]The study shows that the local application system of high pressure water mist is suitable for the oil-containing electrical primary equipment and large room,and the spray intensity shall be not less than 1.5 L/(min·m^(2)).When taking into account the equipment waterproof grade and equipment heat dissipation is not economical,heptafluoropropane fire extinguishing system should be used for electrical secondary equipment.[Conclusion]The research results can provide reference for the construction of fire extinguishing system in offshore substation.