Automatic ignition control system based on pulverized coal fired boiler

The controller provided by the invention comprises a control unit, a power supply, a contactor, a thermal relay, a button, an intermediate relay, a buzzer and a high-energy igniter; a gas pipeline part comprises a pipe fitting, electromagnetic valves, pressure regulating valves and a filter, a gas inlet is divided into two branches, namely a big fire control pipeline and a small fire control pipeline, each control pipeline is provided with the corresponding electromagnetic valve and the corresponding pressure regulating valve, and compressed air pipelines are introduced into the tail ends of the two branch pipes. In the aspect of control strategies, the functions of on-site ignition, remote ignition, automatic purging, fire extinguishing protection and the like are achieved by reading parameters such as pressure, fire detection and an electric eye; in addition, in order to prevent safety accidents caused by gas leakage, a gas alarm device, an exhaust fan and an audible and visual alarm are additionally arrang