Pin Type Boiler Membrane Wall Tubes Industiral / Power Station Plant Using

Heat Exchange Boiler Part Pin-Type Water Wall Panels,Industiral/Power Station Plant Using

Product Introduce

Water wall panels usually laid vertically on the inner surface of the furnace wall, it is mainly used to absorb the radiant heat from the flame and high-temperature flue gas in the furnace. It is the main type of evaporative heating surface of modern boiler and also the basic part of water circulation loop of boiler. Due to both cooling and protective furnace wall role, hence the name.

The water-cooling walls were originally designed not to be heated, but to cool the furnace so that it would not be damaged at high temperatures. Later, as a result of its good heat exchange function, gradually replaced the drum to become the main heating parts of the boiler.

An evaporative heating surface composed of many parallel pipes is arranged on the inner wall of the boiler furnace. The role of the water wall is to absorb the radiant heat of the high temperature flame or flue gas in the furnace, generate steam or hot water in the pipe, reduce the temperature of the furnace wall, and protect the furnace wall. In the large capacity boiler, the flame temperature is very high and the intensity of thermal radiation is very high. The boiler contains 40 to 50 percent or more of the heat absorbed by the water wall. With the exception of a few small capacity boilers, modern water tube boilers use water cooling walls as the main evaporative heating surface.

Product Description

Pin-type water wall oalso known as the piercing tube water wall.It is according to the requirements on the surface of the light pipe welding a certain length of round steel, the use of pin can be firmly on the water-cooling wall of the fire-resistant coating, for the formation of backfired zone, liquid slag pool and slag slug section, as well as cyclone furnace tube.The water wall of the internal screw pipe is a pipe with a single head or multiple helical grooves on the inner wall of the pipe.The internal threaded pipe is used in the high heat load zone of natural circulation boiler or the water-cooled wall pipe section with high vaporization rate in the natural circulation boiler.When the flow in the workpiece inner screw pipe occurs, strong disturbance will occur, causing the water pressure in the soda water mixture to the pipe wall, and force the bubble to break away from the wall surface and be carried away by water, thus damaging the formation of steam film, preventing the deterioration of boiling heat transfer and reducing the temperature of the water cooling pipe wall.

Double exposure water wall refers to a water wall arranged along the height of the furnace, which can absorb radiation heat on both sides.It is used in large capacity boilers.The water wall material is usually carbon steel.The boiler pressure above 14 mpa is also partly made of alloy steel.Pipe outside diameter: natural circulation boilers generally used 51 ~ 83 mm;Multiple forced circulation boilers and dc boilers generally use 22 to 60 mm.The water-cooled walls of a direct current boiler are not necessarily vertical in the same way as natural circulation boilers, but can also be horizontally wound or in other forms.When the parameters are high, especially in the once-through boiler, the inner threaded pipe or the spoiler is often used to prevent the heat transfer deterioration in the high-heat load area of the furnace

Advantages

Thermal efficiency savingr membrane water wall with non-destructive equipment test are membrane walls that are made of tubes welded together with or without a strip of metal in between. These walls form the enclosure of the coal combustion chamber.Water wall tubes are also referred to as the evaporator section; they contain water mostly in liquid form which gradually evaporates as it rises in the boiler.

Parameter

Features

1. Strength calculation report with applied materials information;
2. 100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;
3. 100%X-ray inspection report (welding seam): to ensure the quality of the entire boiler;
4. Hydraulic test report: ensure the standard working pressure and safety

Inspections

1. Strength calculation report with applied materials information;
2. 100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;
3. 100%X-ray inspection report (welding seam): to ensure the quality of the entire boiler;
4. Hydraulic test report: ensure the standard working pressure and safety

Certification