Chain furnace hot water boiler type characteristics

1. The boiler adopts the combination structure of shell type pyrotechnic tube heating surface and water pipe heating surface, giving full play to the technical advantages of the two heating surfaces. The boiler barrel adopts arch tube plate and threaded smoke pipe quasi-elastic combination structure, which not only makes the boiler compact in structure, but also has good low cycle fatigue resistance. Boiler side water wall and water pipe convection heating surface using parallel structure, and connected with the upper and lower side of the box, not only high heat transfer efficiency, and as the support structure of the boiler body, to ensure that the boiler in the working state can be free upward thermal expansion, safe and reliable boiler operation;

2. The boiler adopts convection tube bundle heating surface as the flue gas flow behind the furnace, so as to ensure that the flue gas temperature of the front tube plate smokebox is lower than 650℃, which eliminates the possibility of local subcooling boiling and scale formation in the end area of the pipe, and also eliminates the potential accident hazard of tube plate crack. The cracks occurred in the front tube plate hole bridge area of the original water and fire tube shell hot water boiler with airfoil flue structure were solved fundamentally.

3. Boiler working medium adopts compound circulation technology. Boiler arch pipe and before the wall surface, and the arch tube and back wall surface USES the working medium natural circulation way, side water wall tube and side convection bank is in normal operation is forced circulation way, ensure that the side water wall tube and the water in the convection bank speed not only higher than the heat load of safe water, and ensure that the sediment carried by water can't be in the fixation of deposit box, Completely eliminate the possibility of side water wall tube bursting;