Gas fired steam boilers is a heat energy conversion equipment that uses gas fuels such as natural gas, liquefied gas and city gas as fuel to burn the heat released in the furnace, heat the water in the boiler and make it vaporize into steam. Water in the pot (drum) was released in furnace gas fuel combustion heat energy, temperature and generate steam under pressure, the boiling point of water pressure rises, the pan is sealed, the expansion of the water vapor inside limits, thermodynamic pressure formation (strictly speaking boiler water vapor is water in the drum constant pressure heating to saturated water vaporization form again) has been widely used as an energy source.
This series of gas steam boilers are mainly composed of two main bodies, the boiler shell and the furnace liner, the accessories to ensure its safe and economical continuous operation, the instrument auxiliary equipment, the automatic control and protection system and so on. This kind of boiler is a boiler with a water-cooled wall. Two return firework pipes are arranged in the right and left parts of the boiler barrel, and the front smoke box in the front of the boiler barrel is turned back. Between the pot barrel and the lower box, there is a descending tube and a water-cooled wall tube, forming the frame of the combustion chamber. There is a steam separator at the top of the drum to reduce the water vapor carries out. The heating surface of the pot is the lower part of the pot, the water – cooled pipe and the firework pipe.
Gas Fired Steam Boilers Main Parts
- Furnace: ensure that the industrial steam boiler fuel burns out and make the outlet flue gas temperature cool to the convective heating surface, which can work safely;
- Economizer: use the heat of the flue gas at the end of the boiler to heat water, to reduce the exhaust temperature, and play the role of saving fuel;
- Boiler drum: connect each heating surface of boiler with water cooling wall, drop pipe and other components of water circulation loop. The boiler tube can store the soda water, can adapt to the load change, is equipped with the soda water separation device to ensure the quality of the soda water, the DC boiler has no boiler tube;
- Water cooling wall: the main radiation heating surface of the boiler, absorbing radiant heat of the furnace chamber, heating working medium, protecting the furnace wall, etc;
- Combustion equipment: feed the fuel and the air needed for combustion into the furnace and make the fuel ignite stably and burn well;
- Air preheater: Heating the air used for fuel to enhance ignition and combustion; Absorb waste heat of flue gas, reduce exhaust temperature and improve boiler efficiency;
- Furnace wall: It is the protective shell of the boiler, which plays the role of sealing and heat preservation. The heavy wall of a small boiler can also act as a support for the boiler components;
- Frame: supporting and fixing boiler parts.
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