Valve position display device of blast furnace cold air vent valve

The utility model discloses a blast furnace cold air vent valve position display device, which comprises a potentiometer, a valve position transmitter and a signal conversion system, the potentiometer is arranged on a transmission gear of an output shaft of an electric actuator of a vent valve, the rotation of the gear can drive the resistance of a slide rheostat on the potentiometer to change, and a resistance signal is transmitted to the valve position transmitter through a cable; the valve position transmitter converts resistance signals of the potentiometer into current signals and outputs the current signals to the signal conversion system, the signal conversion system converts the current signals into corresponding valve position visual data, errors are reduced, and maintenance is convenient. 本实用新型公开了一种高炉冷风放风阀阀位显示装置,包括电位器、阀位变送器和信号转化系统，电位器安装在放风阀电动执行器输出轴传动齿轮上，齿轮的转动会带动电位器上的滑动变阻器电阻变化，电阻信号由电缆传输到阀位变送器，阀位变送器将电位器的电阻信号转换为电流信号输出到信号转化系统，信号转化系统将电流信号转换为相应的阀位可视数据，减少误差，检修方便。