避难硐室监控系统小功率备用电源设计  

Design of small-power backup power for monitoring system of refuge chamber

作　　者：林引[1,2] 

机构地区：[1]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400039

出　　处：《中州煤炭》2016年第6期105-108,130,共5页Zhongzhou Coal

摘　　要：根据国家要求,常规煤矿安全监控系统要求在交流停电后能够保证不低于2 h的备用时间,避难硐室监控系统在无交流电的情况下需保证96 h的备用时间,对备用电源提出了更长时间的要求。国家防爆标准GB3836允许在隔爆腔内使用的电池种类只有镍镉和镍氢2种蓄电池,存在单体电压低、容量小等缺点,不适用于硐室监控系统。根据监控系统设备分布式的特点,提出分布式备用电源供电结构,设计出一种小功率的本安后备电源,安装在现有本安电源输出端到本安设备之间,为本安监测设备提供长时间的备用电源。测试结果表明,该后备电源具有电池利用效率高、体积小、质量轻、价格便宜等特点,可为避难硐室监控系统提供可靠的安全供电。According to the requirements of China,it must be ensured that not less than 2 hours of standby time of coal mine safety monitoring system after AC power failure according to the conventional coal mine safety monitoring system requirements, and the standby time of refuge chamber monitoring system must ensure not less than 96 hours without AC power, more stringent and longer time require- ments is proposed to the standby power. The national standards for explosion proof of GB3836 allowed only using nickel-cadmium battery and potentially nickel-hydrogen battery in explosion-protection cavity, and there are disadvantages of low voltage and small capacity,it is not suitable for refuge chamber monitoring system. According to the distributed characteristics of equipment for monitoring system, this design proposed distributed standby power supply structure, a small power intrinsically safe backup power was also designed, and it is installed between the intrinsically safe power supply output terminal and the intrinsically safe apparatus, and can provide standby power supply for a long time. Test results show that,the new intrinsically safe backup power has high using efficiency of battery, small volume, light weight and cheap price, and can provide safe and reliable power supply for refuge chamber monitoring system.

关 键 词：本安电源 避难硐室 备用电源 监控系统 

分 类 号：TD76[矿业工程—矿井通风与安全]