Studded Carbon Steel Furnace Boiler Water Wall Panel ASME Standard

The boiler membrane wall, also known as membrane water wall, refers to the furnace wall of the boiler that is welded together with tubes and flat steel. The water wall of the large boiler is basically a membrane wall, which has the advantages of simplicity, steel saving, good thermal insulation and good air tightness. The membrane water wall has the most thorough protection effect on the furnace wall, so the furnace wall only needs to use thermal insulation materials, instead of refractory materials, so that the thickness and weight of the furnace wall are greatly reduced, the furnace wall structure is simplified, and the total weight of the boiler is reduced.

classification

According to the structural type, there are three main types: plain tube type, membrane type and squeaked tube type.

The plain tube water wall is composed of a whole row of seamless steel pipes, and their structure is the simplest; the membrane water wall weld many rolled water-cooled fin tubes together with spot welding, so that they become a sealed combined heating surface, which can not only improve the air tightness of the furnace, reduce air leakage, but also better protect the furnace wall, reduce the weight of the furnace wall, simplify the structure; the water wall of the spur tube is to weld many pins with a length of 20~25mm and a diameter of 6~12mm on the water-cooled wall tube, and then apply chrome ore refractory plastic in order to reduce the heat absorption of this part of the water wall and increase the temperature of the combustion zone, it is suitable for occasions where fuel ignition is particularly difficult or some liquid slag discharge furnaces.

According to the layout part, there are two kinds of attached wall type and partition wall type (i.e., double-sided heating) water cooling wall.

The former is mostly partially embedded in the inner wall of the furnace wall and absorbs heat on one side, while the latter is mostly installed in the middle of the furnace chamber of a large boiler, separating the whole furnace into two independent parts that are heated on both sides.

Functions