US1274342A - Boiler-setting. - Google Patents

Description

T. SMITH.

BOILER SETTING.

APPLICATION FILED Nov. 6. 1911 1 74,342. Patented July 30, 1918.

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T. SMITH.

BOILER SETTING.

APPLICATION FILED Nov. 6. 1011.

Patented July 30, 1918.

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BOILER-SETTING.

Application filed November 6, 1917.

To all Wit/0m it may concern:

Be it known that I, TnoMas SMITH, a citizen of the United States of America, residing at Birmingham, in the county of Jefferson and State of Alabama, have in vented certain new and useful Improvements in Boiler-Settings, of which the following a specification.

My invention relates to a setting for vertical tubular boilers, my object being to so support the boilers that the tubes are relieved of the compression load of the upper drum and are left free to follow their normal expansion and contraction movements in doing which they carry with them the lower drum which hangs free for vertical movement in its setting.

My invention is more parl icularly adapted to boilers of the lVicks or Rust type and in the preferred arrangement of my setting I utilize metallic columns and stihictural beams which are disposed without the boiler casing and which have suitable connections to the upper drum so as to support the entire boiler from that point and relieve the setting and boiler tubes of the load.

A further advantage of my arrangement is to hold the boiler in proper alinement, this being accomplished by the reinforcing frame work which is so disposed as to be unaffected by any excessive temperature conditions in the boiler.

Another feature of my invention relates to the manner of battling the flow of hot gases between the banks of tubes, this ballle being preferably tied to the brick work and connected by an expansion joint with the movable lower drum which prevent the short circuiting of gases under the ballle.

My invention comprises the novel details of construction and arrangement of parts, which in their preferred embodiment only are illustrated in the accompanying drawings, in which Figure 1 shows in front elevation a vertical tubular boiler equipped with my novel setting and reinforcing frame work.

Fig. 2 is a sectional view taken on the line 22 of Fig. 4.

Fig. 3 is a detail view of one of the guides for the lower drum.

Fig. 4 is a partial vertical sectional view taken on the line l--i of Fig. 2.

Similar reference numerals refer to similar parts throughout the drawings.

The brick work setting of the boiler and Specification of Letters Patent.

Patented July 30, 1918.

Serial No. 200,546.

its general arrangement of drums and tubes may be of any standard verti-al tubular boiler design. As shown, the furnace 1 delivers hot gases over a bridge wall 2 and above the bottom drum 3, these gases being deflected upwardly by means of a vertical ballle wall 4t so that they pass through the bank of tubes 5 lo the bottom of the upper drum l; between which and the ballle they pass and return downwardly through the bank of tubes 7 to the outlet port 8 and thence to the stack 9. The tubes are surrounded by the ordinary brick work setting 10 disposed within the cylindrical metal casing sections 1.1. which are flanged and connected by bolts 12 and which are provided with holes 113 for blowing off the tubes with a steam jet. The upper drum 6 is mounted rigidly in the brick setting and has riveted thereto two pairs of brackets ill and 15. .liolh pairs of brackets project outwardly through the setting and upper casing member 1t and the brackets 15 are mounted on and. riveted to lwo parallel Ibea1ns 1G and 17 which at their outer ends are supported by four pipe columns 18 located substantially at what may be termed the four corners ol' the brick work setting for the boiler proper. Two I-beams 19 are disposed on each side of the boiler and supported on the I-beams 1t) and 17 serve to support the brackets 14. The columns are preferably of heavy double strength iron pipe, or steel tubing may be used and they are suitably mounted on auvbase :loundation and can readily be set up adjacent to boilers now in service or hereafter to be inslalled. The structural frame work comprising the members 16, 17 and 19 may be made up of other types of beams or guides but those described are most satisfactory.

The lower drum 3 is suspended from the upper drum by the tubes 5, 7 being so mounted in the brick work setting that it is free to move up and down vertically in response to the expansion and contraction of the tubes so as to relieve them of any undue strains and stresses resulting from variation heat conditions. It is desirable, however, to prevent the lower drum from twisting or tilting out of proper alinement and putting a strain from that cause on the tubes and to this end I mount on the lower drum a plurality of T-shapcd guides 20 having their curved bases riveted to the drum 6 with their webs vertically disposed and adapted to be Copies of this patent maybe obtained for received in guides formed by angle bars 21 which are set in spaced relationship in the brickwork setting 22. These'guides allow free vertical play for the low-er drum but i hold it against lateral displacement The lower drum is provided with the usual blowout connection 23 and inasmuch as in the case of repairs it will be desirable to jack up the lower drum, I attach to the convex bottom 28 of the drum a bracket 24 which comprises a horizontal bottom portion having itour upturned flanges 25 which are riveted to the bottom 28,"access being had through the setting 22 to the space below the drum so that it is a simple matter to insert'jacks and to lift or adjust the boiler as a whole.

The battle wall l, it it were mounted upon the lower drum would, add its load thereto without special beneficial function and this I prefer to avoid by tying the baflie into the brick lining 10 of the metal casing and to prevent short circuiting of the gases under the baffle when the tubes are expanded, I rivet to the tube sheet 26 of the lower drum 3 a transversely disposed angle bar 27, the vertical member of which abuts against the cooler face of the battle wall and extends suffficiently above its bottom edge to close the maximum joint that will open between the battle and the drum 3 when the tubes are fully expanded.

With the boiler thus mounted in its setting, its free suspension should greatly increase its lifeand service and its steam generating capacity would be entirely unaffected by the arrangement.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent, is

1. In a vertical tubular boiler, upper and lower drums, vertical tubes connecting the drums, a brlck work setting for the drums,

the setting tor'the lower drum comprising vertical guides, co-acting guides on the lower drum to permlt a free movement only in a vertical, direction, external columns tree of the brick work setting, horizontal tie members co-acting guides on said drum and setting for confining the movements of the drum in a vertical directlon, a metallic casing surrounding the tubes and inclosing the upper drum, a thin brick work lining. within said casing, a batfie tied into said brick work setting and extending from the lower drum to a point near the upper drum, a transverse flange forming an expansion joint between the lower drum and the lower end of said battle, external columns standing clear of said casing, horizontal tie members connecting said columns, andbrackets resting on said he members and extending through the casing and upper setting and rigidly tied to the upper drum to support the load of both drums and tubes, substantially as described.

In testimony whereof I affix my signature.

his THOMAS X SMITH.

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l/Vitnesses Nolvrin lVnLsH, J. GORDON Srnrxns.

Washington, D. G.

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