SU20086A1 - Water tube boiler - Google Patents

Description

The invention relates to a water pipe outlet, in which the first row of pipes facing the firebox forms a continuous shade and a passage for gases from the combustion chamber to the chimneys is only in the divergence pipes of the drums and in which there are two ducts creating a current parallel to the boiler pipes gaov. In the proposed water-tube boiler, in order to improve the tele-transmission, in the first boiler duct, superheater tubes are placed, arranged perpendicular to the boiler tubes, while the tubes of the second duct are provided with deflectors made in the form of inclined hangers.

In the accompanying drawing of FIG. 1, a diagram of a water cone. Of: l &; FIG. 2 is a cross-section of a deflector worn on a vertical pipe; FIG. 3- the same, put on a horizontal pipe.

The boiler consists of two drums — upper A and lower B, communicating with several rows of pipes; of which pipes are the first three or four rows

they are bent so that they can be placed in one plane (Fig. 1) in order to maximize the number of pipes in the boiler that perceive radiant heat. The entire tube bundle from S to Sg of the boiler is divided by partition O-0 into two unequal parts. In the upper part of the boiler underneath the -A drum, due to the consumption of pipes, a passage is formed for gases behind the wall S formed by the pipes into the first gas duct with a gas flow parallel to the axis of the Si, S-2, 83, 84 and Ss pipes. In the hottest part of the boiler, perpendicular to the gas flow and perpendicular to the axis of the Si pipes, pipes J5 of the superheater, mounted on boiler pipes, are located. Ss, Si, Ss pipes of the second gas duct between walls O-Oi and Z-Zi are equipped with deflectors, consisting of metal plates with oval holes, put on the pipe in an inclined position (Fig. 2); baffles can be flat-t or curved-n. The displacement of the center of gravity, due to the bending of the end of the deflector, ensures its reliable seizure on the pipe at an angle for a more correct flow of the gas around the surface. The deflector for horizontal pipes is shown in FIG. 3. A ash bunker is arranged under the lower drum B and (FIG. 1), where solid fine particles of ash can fall out through the divorce between the pipes.

This arrangement of superheaters and deflectors is aimed at improving heat transfer, due to the fact that gas particles that have already given up their heat to the boiler pipes and consequently cooled, are thrown aside around the deflectors and thereby give way to new, still hot, gas particles.

Subject patent.

A water-tube boiler with a solid pipe wall facing the furnace, with gases passing through chimneys at the divergence of pipes at the drums and with two gas ducts, creates a gas flow parallel to the pipes, characterized in that, in order to improve heat transfer, in the first boiler flue ( Fig. 1) placed tubes of the superheater, perpendicular to the boiler pipes and fixed on the latter, while the pipes of the second chimney are equipped with deflectors made in the form of inclined suspensions for flat m or curved pipes (Fig. 2).

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