The first type is the bare pipe water wall. This is the simplest structure of the water wall. The advantage is that ordinary seamless steel pipes can be used, and it is more convenient to replace the water wall pipe. The disadvantage is that the temperature of the furnace wall is still high, and heavy refractory bricks are required. The steel frame of the corresponding boiler should be strengthened. , The air leakage of the furnace wall is relatively large. Old-fashioned high-pressure boilers and medium and small boilers are used more frequently.
The second tupe is the membrane water wall. The membrane water wall is welded by seamless steel tubes with fins. The Water Wall Tubes are connected by fins to make the water wall into a whole. This kind of water wall is called a membrane water wall. Its function is to strengthen the heat transfer of the water wall and greatly reduce the temperature of the furnace wall. The furnace wall does not need refractory bricks, but only requires thermal insulation materials. Compared with the conventional heavy furnace wall, the weight can be reduced by 60% ~ 70%, the furnace wall heat storage is reduced by 80%, the start and stop time is shortened, and the fuel consumption is reduced. The load of the furnace steel frame is greatly reduced, saving refractory materials and steel.
The third type is the pierced pipe water wall. The barbed pipe water wall pipe is made by welding many grab nails with a length of 20 to 26 mm and a diameter of 6 to 12 mm on the water wall pipe. It is mainly used to lay the gas belt. Generally, for boilers that burn fuel with low calorific value and low volatile content, in order to stabilize the fire, pierced pipe water walls are often used for laying the fire protection belt.
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Second, the Dongfeng 153 high-pressure cleaning vehicle has the function of low-pressure water spraying without the need of a low-pressure water pump. The suction port of the jet pump is connected with the water tank and driven by high-pressure water. The low-pressure and large-flow water flow at the outlet end of the jet streamlet achieves the function of low-pressure spraying.
Third, Dongfeng 153 high-pressure cleaning truck has the function of quickly replenishing water anytime and anywhere. As the high-pressure cleaning truck adds jet mill to a practical water jet device, the jet pump adopts the principle of jet flow and relies on the vacuum suction formed by the high-pressure water jet without any moving parts. It has extremely high wear resistance, reliability and suction. Pollution capacity can easily absorb water from rivers and lakes, make water for tanks, and make water simple and convenient.
Fourth, the inlet and outlet ends of the jet pump of Dongfeng 153 high pressure cleaning vehicle can be connected to the tank of the high pressure cleaning vehicle through a hose. For water absorption, the jet pump outlet is connected to the tank; for low-pressure sprinkler function, the jet pump's suction port is connected to the tank. For the drainage and drainage function, the suction end of the jet pump is connected to the drainage pool or the sewage pool. 
The boiler water wall is the main radiation heat surface, arranged inside the boiler chamber and proceeds the heat exchange directly with the high temperature flame. The convection tubes are the convection heat surface of the boiler, arranged between the boiler chamber outlet and the end heat surface and proceed the heat exchange directly with the high temperature fume. The water wall and convection tubes are the main heat surface of the boiler, the tubes diameter for both generally usedΦ 51-60mm boiler steel tubes, also as the request.
First, the Dongfeng 153 high-pressure cleaning vehicle has the function of draining dirt without adding parts. The suction end of the jet pump is placed in a drainage or drainage pool and driven by high-pressure water. The outlet of the jet pump can discharge the water or dirt from the basin or the drainage tank.
March 05, 2023