SU40989A1 - Water Tube Steam Boiler - Google Patents

Description

The invention relates to water tube boilers composed of tubular elements formed by vertical pipes welded into horizontal manifolds.

In the proposed boiler, the tubular elements are made of three pipes, between which coils of the superheater are placed, which allows placing large heating surfaces in chimneys.

In FIG. 1 shows a cross section of a water-tube boiler; FIG. 2 is a longitudinal section of it; FIG. 3 is a horizontal section through its ABCDEF of FIG. one; FIG. 4 - part of the boiler body exposed to heat.

The boiler body is assembled from separate standard built elements, each of which consists of a series of inclined pipes / and a series of higher pipes 2, welded into prefabricated longitudinal pipes 3, 4, 5 У longitudinal to the boiler (6. Upper extension; The welded inclined tubes 7 and the lower 5 and 5 are connected by means of intermediate boxes 8 into one pipe leaving the brickwork.Two such elements outside the brickwork are connected by pipes P and / O and form a section of the boiler that overlaps the furnace with inclined pipes / would be in the form of a dual roof; tion are connected with the drum / 5 with pipe // and / 2.

(225)

The boiler body, depending on the required surface, may consist of one section or two, as shown in FIG. 1, or from three sections, as shown in FIG. 4, with a different number of pipes along the boiler.

For precipitation and purging of the collecting turbidity, the boiler is powered by the burner 14. The superheater (5) with its coils can be placed either between the inclined pipes (and vertical 2) and inserted and taken out through the holes (7) or in the form of a screen 16, subjected to radiant heating, as shown by the dotted line in fig. four.

The skeleton of the boiler consists of vertical posts 18, connected by a ring of beams 19, longitudinal beams 20 and cross-beams of beams 21. For larger sizes, it must be more rigid and more complex construction.

The elements of the boiler are suspended by means of suspensions 22 to the transverse beams 27, on which the drum 13 is also fastened, and the elements are also supported by lower assembly pipes on the ring 19 of the boiler frame.

The lining of the boiler can be arbitrary, in particular, it is assumed from separate blocks, lined with bricks on one side, and with an iron-concrete shell on the other.

The blocks have, in order to cool them, channels through which air is blown as the primary; and secondary.

Feeding the furnace. For external cooling, the brickwork is covered with sheets 19 (Fig. 3), and air is blown through the resulting chambers 23 and the channels 2 with a fan.

The firebox may have one or another design depending on the fuel; in the drawing (Figs. 1, 2) a simple grate furnace with access of secondary air through slots 25 is shown. The number of furnaces can be equal to the number of boiler sections or there can be one common furnace for two or three sections, as shown in FIG. 4. In the latter case, the most favorable condition for radiant heating will occur, since the surface of the boiler in relation to the combustion mirror would seem to be zigzag.

The subject matter of the invention.

Water-tube steam boiler composed of tubular elements formed by vertical pipes welded into horizontal collectors, characterized in that, in order to place large heating surfaces in chimneys, built-up elements consisting of pipes / -2-7 are used in the intervals between the pipes 7 and 2 of which are located coil overheater.

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