SU26647A1 - Ribbed economizer consisting of horizontally laid pipes connected in series with external bends - Google Patents

Description

The invention relates to an economizer consisting of horizontally laid finned tubes connected in series by external bends, in which side metal walls are used, in the round holes of which the end flanges of the finned tubes are inserted, arranged in a staggered order with the number of tubes decreasing upwards and downwards horizontal r dah. The openings of metal walls are sealed like glands, and during thermal expansions pipes can rotate and move in them in the direction of their axes.

In FIG. 1 shows a schematic cross-section of the proposed economizer; FIG. 2 and 3-part longitudinal section of it; FIG. 4 - his detail.

The finned tubes 1 (Figs. 1-4) are provided with smoothly machined cylindrical flanges 2, with which they enter the corresponding circular openings 3 of the side metal walls 4 and 5. These openings are provided with an annular recess 6 (Fig. 4) and are sealed like stuffing boxes, allowing the pipes to rotate during installation and move when

operation of the economizer in the direction of its axes, to the extent required by thermal expansion. The recess 6 is filled with some kind of refractory resilient material 7 (e.g., asbestos cord) into which the metal ring 8 (e.g., of lead wire) is pressed into place. The side metal walls 4 and 5 are suspended to the beam 12 (Fig. 2) by means of a riveted bracket 10 and bolts 11. The lower and side edges of walls 4 and 5 are relatively easily pressed to the corresponding parts of the frame 9 by means of bolts 13 passing through large holes and strips of strip iron 14. One of the walls is also provided with holes 16 (Fig. 1) for blowers. Such an arrangement of the finned tubes in the individual holes of the iron walls makes it possible at a time to pull out any tube for inspection or for its cleaning. In addition, the use of iron walls permits any mutual arrangement of pipes, the most beneficial, according to the inventor, is the location of pipes

to the patent of the Board of the state all-union association of the boiler-turbine industry "Kotloturbna Ш 26647

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