Guide: For the boiler, we not only need to understand the characteristics of the boiler, but also the operating principle of the boiler, no matter how big the tonnage of the steam boiler is.

　　For boilers, we not only need to understand the characteristics of the boiler, but also understand the operating principle of the boiler. No matter how large the tonnage of the steam boiler, the working principle of the boiler is basically the same. The working principle of the steam boiler is similar to that of a hot water boiler. It is equivalent to a large iron pot, and the furnace is equivalent to a stove. It uses fuel (coal, biomass or firewood) to burn and heat the steam in the furnace. The boiler absorbs the heat generated by the fuel and converts water into steam with pressure and temperature. The boiler is divided into two parts: the boiler and the furnace. The boiler is a metal container used to hold water. The furnace is the part where the fuel burns. The water in the boiler absorbs the heat of the fuel combustion in the furnace and turns into steam.

　　The boiler body is the main part of the steam boiler, which is composed of two parts: the "boiler" and the "furnace". The "pot" is a metal container used to hold water. Its function is to absorb the heat energy released after the fuel is burned, so that the water in the boiler is heated, and the steam is formed when heated to a certain range of parameters. It is composed of flue gas preheater, steam drum, downcomer, header pipe, water wall pipe, drum and steam separator and other equipment, as well as connecting steam pipes, valves and meters, induced draft fan blower, etc. The "furnace" is the part where the fuel is burned for heat conversion. The softened water in the pot fully absorbs the heat generated by the fuel in the furnace to form steam.