The center control room,auxiliary control panel room,computer room and cables layer in the power station of Tingzikou Water Control Project use gas system for fire-fighting.By the comparison in technical,economic and environmental aspects,the Heptafluoropropane (HFC-227ea) is finally selected as the extinguishing media.The design specifications,conditions and parameters of HFC-227ea gas fire-fighting system are introduced,gas consumption is calculated and the basic functions and operation mode of system are also analyzed herein.%亭子口水利枢纽工程电站中控室、辅助盘室、计算机室及电缆夹层采用气体消防系统,经过技术、经济和环保比较,最终选择了七氟丙烷气体灭火系统.介绍了七氟丙烷气体灭火系统的设计依据、条件和参数,对系统用气量进行了计算,分析了系统所应具备的基本功能以及操作方式.
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