“电极式”自动控制水泵—电动机组排除集水井内存水,远比“浮筒—重锤式”机械位移带动水银接点的装置简单可靠。我站于75年将集水井排水泵操作回路改用电极控制,收到良好效果,多年运行证明能满足下列要求: 1.集水井水位上升到2.1米时,电极控制回路(见图1)起动“自动”一台水泵抽 “Electrode-type” automatic control of pumps - motor unit to exclude water trap wells, far more than the “float - hammer-type” mechanical displacement mercury junction device is simple and reliable. After 75 years of operation, I switched to the control circuit of the drainage pump in the water collecting well, and received good results. The operation proved to be able to meet the following requirements for many years: 1. The electrode control circuit (see Figure 1) starts up when the water level of the collecting well rises to 2.1 meters “Automatically” a water pump