基于水银开关的矿用本安型堆煤传感器的设计

摘要

针对基于行程开关的堆煤传感器由于行程开关易受煤尘侵扰、潮气锈蚀等外部环境的影响而常常不能及时准确地监测到堆煤故障信号的不足,提出了一种基于水银开关的新型矿用本安型堆煤传感器的设计方案.该传感器利用水银开关的原理,在煤刚开始堆积时就将该故障信号传送至胶带输送机保护控制系统,防止煤炭持续堆积,达到保护胶带的效果.实际应用表明,该传感器运行稳定,可靠性高.%For the shortage that coal piling sensor based on limit switch cannot monitor fault signal of coal piling in time and accurately because the limit switch is easy to be influenced by external environment such as dust intrusion and humidity leading rust and corrosion, the paper proposed a design scheme of a novel mine-used I.S.sensor of coal piling based on mercury switch.The sensor uses mercury switch to send fault signal to protection and control system of belt conveyor once coal is piled up, so as to prevent continuous coal piling and protect belt conveyor.The practical application showed that the sensor is stable in running and has high reliability.