攀枝花台YRY-4型钻孔应变仪供电改造

Power supply transform equipment for YRY-4 Drill Strain-meter in Panzhihua Seismic Station

介绍了攀枝花台YRY-4型钻孔应变仪电源的改造,工作原理是利用两节蓄电池轮流供电,将交流电网与设备直流供电电路物理上隔离起来,避免感应雷从交流电网进入台站观测设备。在蓄电池工作至设定的低电压时自动切至另一只电池供电,并对该放空电池进行恒压限流充电。电池充满后又自动与外电网(220 VAC)断开,从而实现对电池间断充电,最大限度与外电网断开,起到仪器设备与外电网双重隔离的保护作用。与此同时还采用定时更换皮带和增加检查仪器次数的措施以减少仪器断电情况发生,实现了防雷和连续供电,可以提高仪器运行率。

This paper introduces the power supply transform equipment for YRY-4 drill strain meter. The equipment can proteet the seismic instrument from the lighting and can also supply the eontinuously power to the seismic in- strument. All these measurement then raise working ratio of instrument observation and can be used for other seis- mie stations.