Vertical small-capacity fire-tube boiler

Abstract

The invention relates to hot water boilers, in particular to a vertical small-capacity fire-tube boiler. The vertical small-capacity fire-tube boiler is mainly composed of a boiler shell, a smoke exhaust tube, a combustor, a fire tube, an exhaust gas chamber and the like. A traditional water tube and a traditional fire tube are changed innovatively, namely the traditional water tube is replaced with the mode that an outer cavity between a heat preservation outer shell and a heat preservation inner shell is filled with water, so that the area of the heating surface is largely enlarged, no tube explodes, and the service life of the boiler is prolonged relatively. The traditional mode that the fire tube extends back and forth horizontally in the transverse mode is changed into the mode that the fire tube extends back and forth vertically in the longitudinal direction, and the fire tube is almost completely exposed in the water, so that the exhaust smoke flow is lengthened, the heat transfer area is enlarged largely, and the heat transfer efficiency of the boiler is improved exponentially. Exhaust smoke in the boiler can completely wash the inner wall of the fire tube rapidly and longitudinally, and therefore the purposes of economical efficiency, energy conservation, the compact structure, high heating efficiency and the like are achieved.

Description

technical field [0001] The invention relates to a hot water boiler, in particular to a vertical small-capacity fire-tube boiler. Background technique [0002] There are many kinds of hot water boilers currently on the market, which can basically be classified into two categories, one is fire tube boilers, and the other is water tube boilers. The common disadvantages of these two types of boilers are high steel consumption and original emission of boiler smoke and dust. High concentration, large smoke and wind resistance, and high power consumption; the different disadvantages of these two types of boilers are that the tube plate cracks and tube bursts of fire tube boilers are many, and the failure rate is high. The process of water tube boilers is complicated, the production efficiency is low, and the cost is high. In addition, the traditional water pipes arranged horizontally, when the water quality is not good, the water pipes are often clogged when fouling occurs, and in ...

AI Technical Summary

Problems solved by technology

[0002] There are many kinds of hot water boilers currently on the market, which can basically be classified into two categories, one is fire tube boilers, and the other is water tube boilers. The common disadvantages of these two types of boilers are high steel consumption and original emission of boiler smoke and dust. High concentration, large smoke and wind resistance, and high power consumption; the different disadvantages of these two types of boilers are that the tube plate cracks and tube bursts of fire tube boilers are many, and the failure rate is high. The process of water tube boilers is complicated, the production efficiency is low, and the cost is high. In addition, the traditional water pipes arranged horizontally, when the water quality is not good, the water pipes are often clogged when fouling occurs, and in severe cases, pipe burst accidents will occur, which greatly affects the service life of the boiler; the disadvantage of water tube boilers is that the structure is more complicated and the volume is larger , not suitable for mobile equipment, the relative water capacity of the boiler is small, and the requirements for automation control and operation level are high; while the advantage of the fire tube boiler is that the water capacity is large, the heat storage capacity is large, and the structure, installation and operation are relatively simple. The disadvantage is that the evaporation intensity is not high, the generated steam pressure is low, the pot shell and internal components are directly heated, and the working conditions become worse. Weakened, due to the large amount of water storage and potential storage, once it is destroyed, it will release a large amount of energy; on this basis, the biggest feature of the present invention is that it innovatively changes the traditional water pipe and fire pipe, that is, the outer heat pipe between the heat preservation shell and the inner shell. The cavity is filled with water instead of the traditional water pipe, which greatly expands the area of ​​the heating surface, no pipe explosion accident, and relatively prolongs the service life of the boiler; and the fire pipe is changed from the traditional horizontal back and forth horizontal reciprocation to the vertical up and down vertical reciprocation , and almost all of them are exposed in the water, so that the flue gas flow is lengthened, the heat transfer area is greatly increased, and the heat transfer efficiency of the boiler is doubled. The purpose of compact structure and high thermal efficiency not only solves the shortcomings of fire tube boilers and water tube boilers, but also has significant comprehensive benefits such as energy saving and environmental protection.

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