Winter anti-freezing device for air-cooled heat exchanger

According to the winter anti-freezing device for the air-cooled heat exchanger, a heating mechanism is arranged at an air inlet in the periphery of the lower end of a framework of the air-cooled heatexchanger, and a shutter is arranged on the outer side of the heating mechanism; the whole device is externally hung at air inlets in the periphery of the lower portion of a framework of the air cooler and is convenient to disassemble and maintain. The blind window is placed outside the heating structure to protect the heating structure from being damaged; a temperature sensor is arranged on the heating mechanism and can be used for monitoring the temperature of the heated air in real time, so that the cold air inlet amount is adjusted by adjusting the opening and closing of the blind window to control the environment temperature; the device is convenient to machine and manufacture, and saves time and production cost; a special heat source pipeline does not need to be laid, installation and use are safe and conven