industrial oil fired vertical hot water boiler

industrial oil fired vertical hot water boiler

The main structure of the internal combustion boiler detail: In the combustion boiler is a main flue of all, combustion residue after combustion of the fuel without directly heating the surface of the mixed working fluid is heated and the flue gas, together with steam as the working fluid work output of method of operation, high efficiency boilers. The internal combustion boiler thermal industry is part of the production of steam. Next to be described in detail the structure of the main combustion boiler: a boiler shell, the pressure receiving member is an important potshell shell type boiler, it is the role space for storing water and soda and steam are separated place. In shell type boiler, boiler shell placed combustion chamber (furnace) and the heating surface, the effect of which was underway boiler body. Potshell cylindrical container is made of welded steel sheet, we split it into three parts: the cylindrical portion is an intermediate portion, both ends of the tubesheet portion is simplified, and some people open end of the tube sheet hole. Simplified by the two or more tube sections butt weld made, the minimum length of the barrel section is not less than 300mm. When the boiler is greater than the inner diameter of the shell boiler 1000mm. Simplified access potshell wall thickness should be not less than 6mm, inner diameter of the shell when the pot is not more than 1000mm, simplified access to the boiler shell thickness is not less than 4mm. Both sides of the drum and the tube plate is connected to the boiler shell simplified, many small holes drilled in the tube plate, through the hole in the fire tube. Front tube plate further defines a larger hole furnace connected. There are many simple pan upper takeover, which takes over a main steam valve, safety valve, manometer, water gauge and the like. Pan with water separator housing interior, surface sewage, and the like into the water. 2, furnace, furnace boilers are specific shell type pressure element, inside a furnace combustion chamber, the outer coating from the boiler water. Furnace outside the furnace by the water pressure. Therefore, it is the worst working conditions the pressure element shell type boiler. Because the furnace by the high temperature flame burning, the temperature is higher than the temperature of the boiler shell, its thermal expansion problems particularly prominent in the boiler fuel, the oil combustion temperature is high, a high furnace thermal strength, severe temperature changes, there is required furnace good performance thermal expansion and contraction. General furnace are made waveform. And some shell type boiler or furnace to a flat circular flat circular shape Singapore. 3, fire tube, the main fire tube boiler heating surface of the boiler shell. Generally use is made of boiler steel φ51mm ~ φ102mm, the front and rear tube plate by welding or play mode coupled expanded joint, when Expansion, connecting the fire tube and inflation port after inflation tube plate using 90 ° pull side contact. Front and smoke at a relatively low temperature plate, inflation bell mouth pull side can be connected. When a welded connection, in order to ensure sufficient bonding strength, and the tube end is not overheating, the tube end projecting required length of the tube plate is not less than the wall thickness plus 1.5mm, but not in excess of the connecting seam 5mm. Imported oil-fired boiler, and some in the furnace exit, fire tube to tube sheet welding connection. But in other parts of the fire tube to tube plate with flange 90 connected to the expander. Effect is produced outside the smoke tube of the tube furnace heated by flue gas through the combustion water in the tube, in order to gradually generate steam, also called "squib." Generally have the following forms: a straight barrel, also called "light pipe", the advantage of a small light pipe smoke resistance, the disadvantage is fouling the inner pipe easily. Heat transfer effect is also poor. Light pipes are typically seamless steel tube, but also useful for welding boiler tube inlet. Another is a threaded tube, which is pressed inwardly out of a recess in the seamless pipe, it seems like a thread, so called "threaded pipe." The advantage is that the flue gas flow within the tube, changing the flow cross-sectional area, the flow velocity of flue gas is also changed and swirl effect. Therefore, it is better than the light of the heat transfer tube and hard fouling. The disadvantage is greater than the resistance through the light pipe has a certain velocity before the flue gas swirl effect more obvious. The third is to add steel wire or steel wire to the formula Fu light tube. It is a light pipe inside the tube into a tube-type inflammation oxidation resistance good steel wire, inside the flue gas flow at the fire tube, steel wire plays a role similar to the threaded tube. If you want to fire tube cleaning, can easily be removed steel wire, steel wire and light pipe are more convenient cleaning. This form of fire tube easy to manufacture, simple maintenance. In order to maintain the strength of the tube plate, according to strength calculation, be reinforced hole in a predetermined position region of the tube plate. Specific fire wall is thickened, with a thick-walled welded tube to tube plate, so that both as reinforcement, acting also as heating surface, the thick-walled tubes referred to as "bracing tube."

(Iii) use of a waste heat boiler for heat recovery. Using the waste heat boiler using waste heat discharged from the heat of the flue gas in a boiler to heat water or generate steam. Such waste heat boiler is provided thermal oil furnace itself does not change the fuel consumption, the waste heat boiler to produce steam or hot water may be used for the production and the occurrence of heating, thereby indirectly ADSF fuel savings. A waste heat boiler provided the following effects: First, since the heat recovery water, it is easy to improve the thermal efficiency of the furnace. Second, because the number of boiler flue gas can be centralized heat recovery, thereby reducing the cost of construction of the heat recovery unit.

Hot water boiler burner does not fire the three main reasons Henan fast boiler industrial fired vertical hot water boiler will appear in the application process or as a small problem like that, a small writing today to tell you the reason water boiler burner does not fire: 1) water boiler burner nozzle does not contain oil pump will supply duct obstruction's sake, do not start the motor smoke, gas leaks and other pipeline being empty. The case of the oil pump can be pressed to start the motor in accordance with the removable tubing to check Gao, no problem when pumping oil column To spewing out. Hot water boiler is not introduced into the head oil is a reason that there is no access to the oil off solenoid valve. When the power cut solenoid valve is closed, the starter motor is no problem even if the work to do, Gao pressure fuel pump to the supply side is not easy. Only when the control board so cut solenoid valve to supply, gasoline can be eliminated. Its purpose is to avoid the exposure to gasoline with the furnace fire for light generation blasting. Generally, when the ignition, the first burner to carry out the pre-blowing, blowing clean residual gas in the combustion chamber, followed by an oil pump ignition. When the pre-blowing part, pump motor operation, cut solenoid valve disconnected from the supply, an outer fuel pump pressure Gao extracted oil solenoid valve is cut off Bunengdaoda nozzle. 2) No ignition voltage Gao connect the supply when the ignition transformer, causing pressure of about 8kv Gao and Gao pressure across the gap between the power level, cause significant flames, pilot fuel mist. When the flame lit steady, no longer have to fire ignition, flame controller flames circumstances message to the control panel, the ignition transformer termination of work to do. Gao pressure is not generated because of a fire, the ignition transformer is not connected to a power supply (or will be co-line circuit board in a loose fuse); two intermediate stages is two thermoelectric grounded due to poor soot, Gao pressure leakage, not to cause sparks. Intermediate grade electrical sparking spacing of about 3mm, electrical sparking head and the rear end of the intermediate stage spacing of about 5-7mm. Always excellent intermediate stage two electrically grounded. 3) water boiler burners to start the motor after a long low water pressure after damage, start the motor of a large pressure will gradually decrease, resulting in poor pump suction fog, sparking tough, sewage after sparking a lot of smoke, flames unstable, adjust the water pressure to start the motor useless. Head embrittlement, resulting in poor absorption fog effect, rather similar. You already understand the reason burner hot water boiler does not fire up. It dealt with the problem when your furnace?

Comfortable life of people is inseparable from the northern winter heating boiler, normal, stable heat source is vital to people's lives. But the attendant is an increasingly serious environmental pollution problems, the implementation of coal to gas policy without delay, using the gas industrial fired vertical hot water boiler is the general trend. In order to achieve green heating, the National Tourism Administration Service Center decided to phase out the existing coal-fired boilers, the introduction of clean and environmentally friendly gas hot water boiler. Fast boiler with their own strong comprehensive strength and rich experience in the heating industry cooperation gained the trust of the National Tourism Administration Service Center, and ultimately provide a vacuum hot water boiler (T6-2800 2 sets of 2.8MW by fast Boiler ).

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