Direct preheating nozzle indirect heating combustion system

Example: Quenching

Continuous adjustment burner with straight tube radiation tube

1. Ball valve

2. Gas solenoid valve

3. Flow control plug

4. Bellows components

5. Flow orifice plate (installed in the burner)

6. Self preheating burner

7. Ignition Transformer

8. Automatic controller for burner combustion

9. Air solenoid valve

(10. Differential pressure switch combined with burner controller, used for emergency cut-off in case of insufficient combustion air flow)

11. Flow control plug

(12. Automatic controller for burner combustion)

principle

When the IFT (8 or 12) burner controller executes the ignition program, the gas solenoid valve and air solenoid valve open simultaneously, and the ignition transformer (7) is powered, generating an electric spark at the burner head position. As the gas solenoid valve and air solenoid valve slowly open, the burner (6) starts smoothly. The bypass of the air solenoid valve (9) can ensure a certain amount of air enters the burner for cooling protection. The gas/air flow required for burner combustion is achieved by the gas flow regulating plug valve (3) and the air flow regulating plug valve (11). The flow orifice plate (5) is used for calibrating gas and air flow rates.