US855934A - Steam-boiler. - Google Patents

Description

PATENTED JUNE 4, 1907.

E. E. CARR..

STEAM BOILBR.

APPLICATION FILED SEPT. 10.1906.

2 SHEETS-SHEET 14 mami PATENTED JUNE 4, 1907.

E. E. CARR. STEAM BOILER. APPLIOATION FILED sEPT.1o. 190e.

2 SHEETS-SHEET Z.

ELMER E. CARR, OF CHICAGO, ILLINOIS.

STEANFBOILER.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed September 10, 1966. Serial No. 3341023.

To all whoml it may concern:

Be it known that I, ELMER E. CARR, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Steam-Boilers, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

This invention relates to what are known as water-tube boilers, in which the furnace heat is directed rimarily uion a series of tubes connecting leaders an through which the water is circulated.

The objects of the invention are to simplify the construction of the boiler and to increase its efficiency by making its interior conveniently accessible for cleaning by providing for a freer circulation of water; by providing for the agitation of the water in the upper or steam drum, whereby the liberation of the steam is facilitated; and by providing for the better heating of the steam drum than has heretofore been practical.

The invention is eXem liiied by the structure hereinafter describe and which is illustrated in the accompanying drawings, in which- Figure 1 is a sectional detail of the boiler and its settings; Fig. 2 is a detail section on the line 2--2 of Fig. 1; Fig. 3 is an enlarged detail showing the front of the boiler, partly in section and artly in elevation; and Fig. 4 is a sectional etail of the mud or sediment drum.

As the form of fire-box and grate used in connection with the boiler is entirely immaterial, this detail is not shown in the drawings except that at 10 is represented a furnace bridge wall, the line of draft being controlled by baffle plates 11-and 12, and a smoke flue being shown at 13.

The boiler consists of a plurality of drums, preferably cylindrical in form, there being shown two, designated 14 and 15, at the rear and adjacent to and just inside of the back wall 16 of the furnace; two, designated 17, 18, of the same form, located at'the front of the furnace and adjacent to and inside of its front wall 19, and being at somewhat greater elevation than the rear drums; and an up er drum 20 arranged longitudinally of the fp nace and located adjacent to but inside of its dome 21. Each of the rear drums 14, 15, is connected with one of the forward drums 17, 1S, by a plurality of tubes, as shown at 22,

23, which are, of course, inclined upwardly from rear to front.

A water leg 24 leads domi from each side of .the drum 20, and adjacent its bottom, to the drum 15. A hollow saddle 25 affords communication between tliedrums 14 and 15, and a similar saddle 26 connects the drums 17 and 18. The arts 24, 25 and 26 are preferably each provi( ed in duplic ate, only one of each of these parts being shown in the drawings. A water leg- 27 (only one of which is shown) leads from the drum 18m-o each side' of the drum 20, entering it near its bottom. Water is admitted to the boiler through a connectioi 28, and steam is delivered from the boiler hrough the connections 29 and 30 leading out of the to i of the drum 20.

Each of the lower rums 14, 17, is provided with a manhole, suitably covered, as shown at 31, 32, in one or both of its ends, of such size that a man may enter the drum, and the saddles 25, 26, are of such size that a man may pass from the lower drum of each pair into the upper one. 'By this arrangement the necessity for locating hand holes in the drum opposite the end of each ofthe Water tubes 22, 23, is entirely obviated; the drums are rendered much stronger by this Jfreedom from perforations, and the cleaning operation is greatly simplified and can be performed in much less time than when it is necessary to remove and replace numerous hand holes covers. Furthermore, the hollow saddles 25, 26, provide for a much freer circulation of water than has heretofore been obtained in boilers of this type, as their cross-sectional area is ample to permit the passage of water as may be conveyed through the tubes 22.

The water legs 24, 27, are also made large enough to convey as much water as will the two sets of tubes 22, 23. to provide as large a cross-sectional area in the vertical tubes as in the inclined tubes 22, 23,

vfor the reason that the water will pass much more readlly and wlth less friction through the large verticalfpipes than through the small and approximatelyihorizontal tubes, this feature'of the invention involving the use of tubes'and water passages so proportioned that, in view of their position,.they

will have substantially equal conveying capacity.

The upper drum 20 is provided with a suitably-closed man-hole 33 in one orI both of its ends. A series of baffle plates 34 is-located transversely across the interior of the drum It is not necessary v IIOl 20, rising from its bottom, these plates being inclined backwardly with reference to the direction of circulation of the water and being apertured adjacent their lower edges, as shown at 35.

The direction vof circulation is upwardly from the drums 14, 15, through the tubes 22, 23, the drum 17, the saddle 26, the drum 18, and -the water legs 27;l itis thence backwardly through the drum 20, and downwardly through the water legs 24 to the drums 15, saddle 25 and drum14. As the water moves backwardly through the drum 20 it is agitated by itscontact with the baffle plates 34, and these plates serve the further purpose of directing it down to the bottom of this drum and hence bringing it into contact with the greatest available' heat. This agitation of vthe water facilitates the separation of the steam globules. The pitch ofthe baille plates may be determined by the builder in view of the general situation of the boiler.

The location ofthe steam drum within and beneath the dome 21 of the furnace provides for the circulation of the hot vapors entirely around it, and secures a drier steam than when the steam chamber is located practically outside of the furnace chamber.

Channels are formed on the inner surfaces of the side Walls 36 of the boiler, as shownat 37, leading downwardly from its dome 21 to ermit of the insertion of steam pipes 3S havlng lateral perforations, `as shown at 39, so arranged as to discharge jets of steam upon the exteriors of the tubes 22, 23, for the purpose of blowing oil the dust which may accumulate upon them. The channels 37 are inclined in order that the steam pipe may besubstantially perpendicular to the tubes 22, 23, thereby provlding for the more eHicient sweeping of the tubes 22, 23, by the steam jets. The pipes 38 maybe withdrawn from the channels 37 when not in use, and in order that they may be turned to direct steam upon dill'erent portions of the boiler ,tubes they will preferably have a iexible connection (not shown) with the steam supply.

The drum 14 being the lowest section of the boiler, will receive the accumulation of sediment. A blow-oil" pipe 40 is located Within this drum and extends longitudinally thereof for substantially its entire length.

As shown, it projects through the wall ofthe drum at one of its ends, and is there provided with a valve controlled nipple 41. This pipe is freely perforated throughout that portion` of its length which lies within the drum, as shown at 42, these perforations being preferably conned to its lower side. I/Vhen the nipple 41 is open the internal pressure of the boiler will forcethe mud or the sediment into. the pipe 40 and vthence deliver it from the boiler. This arrangement of the blow-of`r` or sediment pipe insures the removal of the hollow sadd backwardly with reference sediment from the entire floor of the muddrum, a common fault with devices heretofore used for this purpose being that the sediment is removed only from that portion of the drum adjacent the discharge nipple.

The boiler thus described provides a further advantage in that its front Wall 19 may be freed from perforations, except to accomv 1. In combination, two pairsv of drums, i

the members of each pair being vertically alined, water tubes connecting the pairs of drums, one of said drums having a man hole and its companion being joined to it by a e adapted toal'ord access for cleaning purposes frein one drum to the other.

2. In combination, in a steam boiler, drums united by inc-lined water tubes, a steam drum, water legs connecting the steam drum with the first named drums, and bale plates crossing the lower portion of the steam drum between the water legs.

3. In combination, in a steam boiler, drums united by inclined water tubes, a steam drum, water legs connecting the steam drum with the first-named drums, balle plates .crossing the lower portion of the steam drum between the water legs and being inclined to the direction of flow of water.

IOO

4. In combination, in a steam boiler, drums l united by inclined water tubes, a steam drum, water legs connecting the steam drum with the first-named drums, and apertured baie plates crossing the lower portion of the steam drum between the water le s and being inclined backwardly with re erence to the direction of flow of water.

5. In a steam boiler, in combination, a setting havin a discharge flue and containin a iire box, ue passages, and a dome in t e form of a self-supporting arch, its chamber being above but open to the main chamber of the setting and being independent of the iiue passages and discharge flue and a steam drum located within the dome and spaced apart from the walls thereof, whereby a dead-vapor space is provided around. the drum. j f

6. In asteam boiler, in combination, two sets of drums spaced apart horizontally and vertically, the drums of each set being vertically alined connection between the drums IIO of eachy set, tubes connecting the sets of drums, a steam drum, and a water leg connecting each of the first-named sets of drums with the steam drum.

7. In a steam boiler, in combination, two l alined cylindrical Water driinis arranged besetsof driinis spaced apa-rt horizontally and low the steain drinn, each of'siieli driiins having its axis extending transverse to the axis of the steam drinn and the two sets of driinis vertically, the drums of each set. being vertically alined connection between the driinis of each set, tiibes connecting the sets of drums, a st-eain drinn,` and a water leg conneetin, r each of the first-named sets of drums with the steani drinn, the water legs having substantially the saine carrying capacity as the inclined tubes.

8. In a steam boiler, in combination, a. cy-

being spaced apart horizontalliv and vertijeally, tubes connecting the sets of water lindrica-l steam drinn, a plurality of cylinl drical water drains below the steani drinn, the wat-er (lriinzs being spaced aparthorizonextending transverse to the axis of the st.eain drinn, tubes connecting the water drums, and water legs connect-ing the water driiins with the steam drinn.

9. Ina steam boiler, in combination, a eylindrioal steam drinn, two sets of verticallydrums, :i hollow saddle connectinzgr the water drums of each set, and a water leg connecting tlie izpperinost drinn ot' each set with the steam driiip.

1t). In a steam boiler7 in combination, two sets of driinis spaced apart horizontally and 1 vertically, connection between the driiins of i each set., tubes connectingr the sets of drums, tally and vertically and each having its axis a stea-in drum, and awatei' leg; connecting y each of the iirst-nanied sets of driiins with the steam drain.

ELMER E. CARR.

Witnesses:

Loiis K. GiLLsoN, CHARLES B. GiLLsoN.

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