US1775321A - Water-wall construction - Google Patents

Description

Sept. 9, 1930.

C. S. REED WATER WALL CONSTRUCTION Filed July 25, 1925 Patented Sept. 9, 1930 UNITED STATES PATENT OFF-1613' CARL 's. REED, or YONKEBS, NEW YORK, AssIGNoIt 'ro INTERNATIONAL comBus'rIoN ENGINEERING CORPORATION, A CORPORATION or DELAWARE IwA'rIm-w LI. CONSTRUCTION Application flied, July 25,

This invention relates to water walls for furnaces and is especially usefulin furnaces adapted for the burning of fuel in suspenslon, combustion space of which is defined by the 5 water wall.

One of the primary objects of the 1nvention is to provide a simple and efiective means for aligning the tubes composing the water wall. a

How the foregoing, together with such other objects as may hereinafter appear, or are incident to my 1nvention are realized, is illustrated in preferred form in the accompanying drawing, in which the figure is a partial perspective view of a furnace Wall construction embodying my improvements.

As heretofore indicated, the invention is especially useful in upright water walls d e= fining combustion space of a furnace and in the present arrangement I have illustrated the water wall as covering the front wall 7 I of a combustion chamber. 'The water wall comprises a pluralit of vertically extending tubes 8, each tube aving longitudinal fins 9 welded or otherwise secured to opposite sides thereof,with the fins preferably in alignment and spaced a slight distance. As is customary in this art, particularly where the fuel to be burned is pulverized coal, secondfront wall and the fins are spaced slightly apart, as described. in order to allow such secondary combustion air to enter into the combustion space. h

It is, of course, to be understood that the tubes 8 are connected; into the circulation of the boiler for which urpose it is customary to have the upper enc is of the tubes, and the lower ends of th'e tubes extend thru thewall to the exterior for connection into suitable headers which in turn are connected: into the circulation of the boiler proper by downcomers and upcomers'.

Very frequently in assemblage the tubes will not align properly, because of distortion, and frequently under service conditions certain of the tubes may become somewhat distorted, making the space between the ad.- jacent fins too large. To meet this condition, I weld oppositely extending tabs 10 to the ary air for combustion is admitted thru the 1925'. Serial No. 15,985.v

fins 9 at suitable intervals. It .will be seen that the tabs secured to one fin overlie'the;

adjacent fin and vice versa so that, altho the tabs are on the same side or face of the wall, nevertheless they co-operate to prevent the fins to which they are respectively secured from shifting out of alignment.

When assembling the tubes in the form of a be applied to the tubes before assembling the tubes in the wall. 7

Air for combustion may be supplied in various ways. In the present showing air enters the spaces 11 between the wall 7 and the and the fins 9 thru inlet openings 12.

'What I claim is:

1. In a water wall for combustion chambers, the combination of a pluralit of tubes, each tube having fins, the fins an tubes co operating to form the wall, and means on the fins for-maintaining tubes in alignment while permitting adjustment of ing of the tubes. y

2. In a water wall for combustion chambers, the combination of a plurality. oftubes,

the relative spaceach tube having fins, the fins and tubes 00- operating to form a wall, and tabs on the.

fins, the tab on one fin overlapping the adjacent fin in sliding contact, therewith, and

the, tabs being on the same face of the wall.

' 4. In a furnace wall construction, the combination of an inner water wall and an outer wall, the waterwall'being composed of tubes having fins with the fins spacedapart'to provide air inlet 0 enings, means whereby air may be admitte thru said inlets, and means at intervals longitudinally of the tubes for holding the tubes in alignment.

5. In a water wall construction for combustion chambers, a lurality of tubes spaced 5 apart to form air in ets, and means on each tube respectively bearing against the adjacent tube for maintaining the tubes in alignment, said means being located at spaced intervals intermediate the ends of the tubes. In testimony whereof, I have hereunto signed my name.

CARL S. REED.

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