一种矿用瓦斯管道设备防爆等级转换接口设计  

Design of an explosion-proof grade conversion interface for mine gas pipeline equipments

作　　者：林引 LIN Yin(CCTEG Chongqing Research Institute,Chongqing 400039,China;State Key Laboratory of Gas Disaster Monitoring and Emergency Technology,Chongqing 400037,China)

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

出　　处：《工矿自动化》2018年第5期12-15,共4页Journal Of Mine Automation

基　　金：国家重点研发计划项目(2016YFC0801405)

摘　　要：针对煤矿瓦斯抽放监控系统中瓦斯管道设备及其相关联的电源和通信接口必须满足"ia"安全防爆等级要求,在现有"ib"防爆等级的煤矿瓦斯抽放监控系统基础上,通过增加一种安全等级转换接口对瓦斯管道设备进行了升级改造。详细介绍了具有梯形输出特性的阻性限流的电源转换原理和具有线性输出特性的阻性限流的信号转换原理,并对关键元件的相关参数进行了分析及计算。测试结果表明,该转换接口具有转换效率较高、频率失真小等特点,输出特性满足"ia"安全防爆等级要求。According to requirements that gas pipeline equipments and its associated power supply and communication interface must satisfy the"ia"safety explosion-proof grade in mine gas drainage monitoring system,the gas pipeline equipments can be upgraded by increasing an explosion-proof grade conversion interface based on current mine gas drainage monitoring system with the“ib”explosion-proof grade.Power conversion principle with resistive current limiting and trapezoidal output characteristics,and signal conversion principle with resistive current limiting and linear output characteristics were introduced in detail.Related parameters of key components were analyzed and calculated.The test results show that the conversion interface has the characteristics of high conversion efficiency and low frequency distortion,and its output characteristics meet the"ia"safety level requirements.

关 键 词：瓦斯抽放 瓦斯管道设备 转换接口 “ia”安全防爆等级 梯形输出 阻性限流 

分 类 号：TD684[矿业工程—矿山机电]