The control system of natural gas closed burner is composed of electric valve, sensor, PLC remote control cabinet and computer control software.
Each layer of nozzle adopts partial pressure control. After entering the torch area, the natural gas is divided into four paths, controlled by electric valves, respectively into the first, second, third and fourth layers of the burner nozzle. The whole device runs automatically under the centralized supervision of the automatic ignition system.
The burner nozzle and igniter are controlled by pressure transmitter as trigger condition. When the pressure is higher than the ignition set value, the igniter starts to ignite the long flame and burns normally; When the pressure is higher than the first layer of burner nozzle valve set value, long open fire normal combustion, the first layer of burner valve automatically open, natural gas into the first layer of burner nozzle combustion; When the pressure is higher than the second layer of burner nozzle valve set value, long open fire normal combustion, the second layer of burner nozzle valve automatically open, natural gas combustion by the first layer, the second layer of burner nozzle combustion at the same time; When the pressure is higher than the third layer burner nozzle valve set value, long open fire normal combustion, the third and fourth layer burner nozzle valve automatically open, the first, second, third and fourth layer burner nozzle burning at the same time.
When the pressure is below the lower limit of the burner nozzle valve, the burner nozzle valve will be closed. When the pressure is below the lower limit of the fourth burner nozzle valve, the fourth burner nozzle valve closes, etc.; Turn off the flame when the pressure is below the lower limit of the flame. The four-layer burner nozzle burns automatically according to pressure changes to achieve stable exhaust emissions and prevent frequent start and stop of the torch.
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