油气安全主动防护系统在大型外浮顶储罐密封中的应用  

Application of active protection system of oil & gas safety in sealing of large outward floating roof tank

作　　者：于海城[1] 刘庆鹏[1] 于浩[1] 蔡云[1] 

机构地区：[1]大庆石化公司化工一厂,黑龙江大庆163714

出　　处：《炼油与化工》2015年第4期63-65,共3页Refining And Chemical Industry

摘　　要：结合大型外浮顶储罐的结构特点,通过采样分析、安全判定、惰化保护3个过程,实现对大型石油储罐密封圈的主动安全防护。气体取样泵对储罐密封圈环形气囊不同分区内的混合气体进行自动巡回取样,进行氧气浓度分析和可燃气浓度检测,检测结果传输给PLC系统进行判定。当判定结果为危险时,系统自动启动惰化保护。Based on the structural features of large outward floating roof tank,three processes of sampling analysis,safetyjudgment and deactivation protection are implemented to realize the active protection of seal rings of large petroleum storagetanks. The gas sampling pump is used to make automatic touring sampling of the gas mixture in different zones of circular gasbags of storage tanks seal rings and make oxygen concentration analysis and flammable gas concentration detection. Thedetection result is transferred to PLC system for judgment. When the judgment result is danger,the system automaticallyinitiates deactivation protection.

关 键 词：外浮顶储罐 油气 PLC系统 安全主动防护 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]