US1750254A - Header for water-tube boilers - Google Patents

Description

March 11, 1930. w, ARMACQST 1,750,254

HEADER FOR WATER TUBE BOILERS Filed Jan. 23. 1928 M45: M Hem/coax INVENTOR.

k, ATTORNEY.

Patented Mar. 11, 1930 UITE STATES PATENT OFFICE WILBUR H. ARMACOST, on NEVJ YORK, N. Y., ASSIGNOR 'ro THE sUrEnHEA'rER COMPANY, on NEW YORK, N. Y.

HEADER F03 WATER-TUBE BOILERS Application filed January 23, .1928.

This invention relates to boilers of the socalled horizontal water-tube type and is particularly concerned with the means for supporting the sectional headers into which the ends of the water-tubes are expanded. The purpose of the invention is to provide novel means for supporting such headers.

The invention is illustrated in the drawing accompanying this specification, in which drawings Fig. 1 shows a lateral View of a portion of one of these headers with the attached tubes and the novel supporting means; Fig. 2 shows a sectional view on line 2-2 of Fig. 1; Fig. 3 is a section on line 3-3 of Fig. 2; 5 Figs. 4, 5 and 6 are top views similar to Fig.

2 showing modifications, each showing portions also of the adjacent headers; and Fig. 7 is a section on line 77 of Fig. 6.

It will be understood that the water tubes a 11 which are shown with one end secured into the header 2 have their other ends simi larly connected to a corresponding header and that there is a series of such headers at each end arranged side by side. All of this is according to the ordinary arrangement.

By means of my invention it is feasible to use ordinary tubing circular in cross-section for these headers. The lower ends of the headers are closed in any desired manner. 0 To close the upper end, a partition 8 is welded in, some distance below the top 4 of the header 2. If desired, reinforcement can be added by oxyacetylene welding at 5. The tubes 1-1 are rolled in in the ordinary manner, the necessary hand-holes for this purpose (not shown) being provided opposite their ends.

To support each of these headers a rod or bolt 6 is securedin the upper open end which is engaged by the hanger 7. The upper end of this hanger is supported in any desired manner on the supporting I-beams 8-8 or other stationary members. In the form shown, the hanger 7 passes through a plate 9 resting on the I-beams, its upper threaded end having on it the nut 10.

In the form illustrated, two circulating pipes 11 and 12 open into the upper end of the header. The tube 11 is rolled in in the ordinary way through the hand-hole 13. 12

Serial No. 248,701.

is shown as secured in the partition 3. The tool for rolling it in is also inserted through the handahole 13. To allow the tube 12 to be bent toward the drum with which it is to communicate without interfering with the bolt 6, the wall of the open end is cutaway as at 14.

It will be evident that in the arrangement as described the projecting ends of the bolts 6 prevent placing the headers in close contact with each other. This may at times be objectionable, and the forms of the invention shown in Figs. 5 to 7 obviate it. 7

In Fig. 4 the outer ends of the holes through which the bolt 6 extends are slightly countersunk and the ends of the bolt are expanded to fill the counterbore as at S -6 This permits placing the headers in contact with each other.

In the form of Fig. 5 the bolts 6 are allowed to project as in the form first described, but they are each placed at such an angle that the projecting ends do not interfere with the adjacent headers.

Figs. 6 and 7 illustrate a form in which the ends of the rod 6 do not extend through the walls but lie in opposite recesses in the interior of the walls. The shape of the recesses and the method of inserting the rod will be clear from an inspection of the figure.

While I have shown and described; some specific forms of my invention,it will be obvious that variations can be made in practice without losing the spirit of the invention. Thus it will be clear that the invention has particular utility when headers of circular cross-section are used, but it is not limited to headers of this form. Headers which are rectangular in cross-section can have my invention applied to them. This and other Variations are intended to be within the scope of my claims.

I claim:

1. In a header of the class described having a closed upper end, the means of support comprising an extension of the walls of the header upward beyond the closure of the upper end, a bar engaging said extension at two opposite points, a fixed support above the header, and a hanger engaging the bar and the support.

2. In a cylindrical header of the class described having a closed upper end, the means of support comprising an: extension of the header walls beyond the closure of the upper end, said extension being perforated at two diametrically opposite points, a fixed support above the header, a bar engaging the two perforations, and a hanger engaging the bar and the support.

3. In apparatus of the class described, the combination of a vertical row of boiler tubes, a header to which one end of each is secured, an apertured closure for said header below the upper end of its wall, means to support the header comprising a fixed support above the header and suspension means engaging the support and the header wall above the closure, and a circulator tube one end of which is secured in said aperture.

4. In apparatus of the class described, the combination of avertical row of boiler tubes, a header to which one end of each is secured, an apertured closure for said header below the upper end of its wall, means to support the header comprising a fixed support above the header and suspension means engaging the support and the header wall above the closure, and a circulator tube one end of which is secured in said aperture, said header wall above the closure being cut away at one side and said circulator tube extending through the space so formed and its end being bent toward the closure.

lVILBUR H. ARMACOST.

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