US1070391A - Water-tube boiler. - Google Patents

Description

J. E. BELL. WATER TUBE BOILER.

APPLIOATION FILED NOV. 7, 1905.

1,079,391. 7 Patented Aug. 19, 1913.

4 SHBETSSHEET 1.

' ENVEEIETOR wumessss J.E.BELL.

WATER TUBE BOILER.

APPLICATION FILED NOV- 7, 1905.

Patented Aug. 19, 1913.

4 SHEETS-$HBET 2.

WITNESSES J. E. BELL.

WATER TUBE BOILER. APPLICATION rILnnNov. 7, 1905.

19mm 310 Q Patented u 19, 1913 4 SHEETS-SHEET 3.

KWETPMES8E$ INYENTOR W lla 14w I J. E. BELL.

WATER TUBE BOILER.

APPLIGATION FILED NOV. 7, 1905.

Patented; Aug. '19, 1913,

wmsm.

4 SHEETS-SHEET 4.

WITNESSE5 I UNITED s'rnf'rns carrier orricia J'QHN E. BELL, on NEW YORK, 1v. 1., ASSIGNOB To run BABCOCE a wrncox comranr, or NEW YORK, N. Y., a CORPORATION or new annsnr.

WATER-TUBE BOILER.

Specification of Letters Patent.

Patented Aug. i'ltli, li t n Application filed November 7, 1905. Serial No. fitifidiit.

To all whom it may concern:

Be it known that I, J OHN E. BELL, of the city of New York, State and county of New York, have invented certain new and useful Improvements in Water-TubeBoiL 'ers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation showing one form of boiler structure in accordance with my invention; Fig. 2 is a front elevation of the same: and Figs. 3 and i are views similar to Fig. 1, showing other forms of the invention.

My invention relates to water-tube boilers and especially to those of the horizontal type, wherein the-tube-heating surface extends in a' general horizontal direction, usually between the horizontal plane and 45 degrees thereto. Heretofore, such type of boiler, of which the Babcock v8a Wilcox boiler and Heine boiler and the Root boiler are examples, the number of rows of tubes have a certain proportionate relation to the.

heating surface to give good eihciency; and increase in the grate surface should be accompanied by correspondingincrease in the heating surface, WillCl1,-l1OWB\ 'Cl, must be limited as above described. I

My invention overcomes ihrse diiiiculties. and provides a horizontal water tube boiler of great capacity, while occupying a comparatively small amount of floor space. The invention consists in independently connecting one or more sets-i or rows of lowerwater tubes adjacent to the f rnace to the-steam and water-drmn or drums. at one or both ends, preferably thc'up-current ends; the tubes above these lower tubes having connection to the steam and waterdrum or drums independent of the connection for the lower tubes. The lip-currents from the lower tubes, which are otherwise liable to be burnt out, are' thus given a freer exit .to the steam and water-space and are not choked back by minging with and passing through the Water from the upper tubes. The invention further contubes 17. 1a. to a bridge sists in an improved arrangement of baffles which is suitable for any horiiiontal water tube boiler, though especially adapted to my improved boiler.

in the drawings, referring to the form of Figs. 1 and "2, l show a horizontal water-tube boiler having a lower set of inclined tubes 2 and an upper set of inclined tubes 3. The lower tubes are connected at one end, (in this case the rear end) to -vertically-extending headers 4:, which may be of the ordinary zig-zag or serpentine type; and the upper ends of these headers are connected by pipes or nipples 5 to the saddle 6 of a steam and. water-drum 7 which I have shown as Xtending longitudinally of the boiler. The steam and water-drum, may, however. extend transversely of the boiler and be located above either end; or 1 more than one steam and water-drum may i be employed.

The upper set of tubes 3 is shorter than the lower set and at one end they.are connected to vertical headers 8, which are connected by nipples 9 to a second'saddle 10 of the steam and water-drum 7. The opposite ends of the tubes 3 are connected tov vertical headers 11, having at their upper 'ends nipples 12 connecting to saddle 13.

The headers 11 preferably extend. downwardly far enough to receive all of the tubes 3 and are ed at their lower ends to a lower corrc p ng set of headers Li receivii'ig theends o. the lower set of water The headers 11 may be arranged to receive the ends of all the tubes of both sets.

i have shown two sets of grates 15 and ill, extending from the front and rear walls wall 19,1llflllfi@fl transversely at on intermediate point. Fire doors ill: provid d at both ends of the setting in shown. the grates errtending unu-erneatn substantially the whole of the boiler. The lire-doors may. however. he placedat one or both ends of the setting and the gratesi'nay extend beneath. any desired portion or portions of the heating surface.

The battling may be of any type. In the form of Figs. 1 and 2 I have shown a lower horizontally-extending baffle 21, lying on the lower row of wateriubes and another horizontal balile 22 (ex-- tending from the oppos te end and lying desirable fit? ni h

on the upper row of the lower set of tubes At the end of the b aille e vertical battle 23 leaving port at its upper cud, amid a depending, belile 24- is preferably placed between the baflie 23 and the uptsite 25. The flames and gases are thus given a tortuous course along; and across the Waiter-tubes. iihc space between the' heeders 8 for the upper set of tubes 3 and the pipe counec- E-tor the correspondmgheuders of the low set oi tubes is preferably large enough tool-tow entrance of a men through. the side wall ofthe'setting. For this purpose a doc-:4;- or d-oorsfifi may be used in the side wall or walls, through which the men ceu enter to expend. the tubes or remove and replace iii the operation of the boiler the Water sud steam in vthe lower tubes flow into the headers time thence through the pipe cou sections -5 directly into the steam and water-drum, where the steam is released. A rapid circulation may thus be provided iii the lower set of tubes which is nearest the furnace end is most liable to be burnt out. up circulation of steam and water passes upwardly separate from. the lugs-circulation of the tubes 3 the latter puss iug up through the headers 8 and nipples 9,2116. descending through. the headers ll and 14:. I. do not consider it necessary to employ separate connections for the two sets of tubes 2 end 3 at this end of the boiler. Separate headers and connections may, however be used for the sets of tubes at one or both ends within the scope of my broader claims, although the main adventeges of my invention flow from the seporots con iiectious git the up-curreut ends. L its the upper set of tubes is subjected to the furnace gases after they have parted with u portion oft their heat, can steel: the uows oi tubes oi this upper set above each other t'o'ci y'desireole height Within. practicol Without danger of burning out the lowcs tu how u similar to'thst mt bellli V form t tslly-estteuumg, the 27, end 2"!" beiii .u to the bsiliss 21*- g a. of the gases will be someereut' this form, but otherwise tielly the in the first term,-

. up-currents of Water from lower tubes passing though their own independdrum.

in. F {2 I show u form of. Fig. 1.. except the"; I inclined i i t e Up'pvsiig the lo er ell i P have,

.euy desired shape or size. The tubes out connections to the steam. and Wdi r.

soc/e cort .l, except with the letter b annexed thereto, the nipples 9 arclonger than nipples 12"; instead oi usiug two sets of tubes with separate conuecti 21s to the steam and Water-drum at one end, I may employ three or more sets, each. set preferably having its ownindependeint connection to the steam and Wsteudrum or drums at one end, or both ends, if desired. 4 The advantages of myinvention result from the separate ceimection of the lower tubes with the steam and Watesspeoe; since thereby the amount of heating surface and, grate surface can be increased withoutincreasing floor space and Without liab.il ity of burning out the lower tubes. A rapid circulation may take plece'through these lower tubes, since the up-currents of this upcirculation pass directly to the steam and Witter-drum or drums. The upper set or sets of tubes may be stacked up to any desirable height since there is little or no danger of burning out such tubes. A. very large amount of heating surface may thus be provided and the grate surface may be made correspondingly large by increasing the grate areaeven to covering substantially the whole of the floor space occupied. The bufiling, bye horizontal pass among the tubes, followed by vertical posses, (gives eliicieut extraction of heat. 1. 4 v Instead of the ordinary headers at the ends of the tubes, I may employ a water; leg or legs such as in the Heine,typeo1 boiler, or I may use boxes or manifolds of may be divided into two or more sets and the upper may set us on economiser or feed- Water heater.

The-upper set or sets of tubes may have the some inclination as the lower set or] tubes, or may be inclined. at 2. different angle, or reversely inclined. The furnace may fired fromoue or both ends end the umy extend. below any part well of the boiler. The separate connections iior the sets of tubes may be used at either or both ends and any desired type of bottle may be used. hsviu; the ppes or hip- "0.111 headers orbo zes to the steem and u'stei druui or drums may to as iutermcdiete box, chem Focr or chambers, W

ii iii turn is connected to the steoui snci water-drum or drums. u ower tie-file be shove one or more 129 rows of tubes or supported below this lowermo t row of tub-9s.

e, 1 .1.1 nn f1 gym. Question Juli aputo. .0 e1 .ez. 31c boilers or bojxlcis oi: the land pe. other vorotioiis may be .iuude m IOlliil. it me: i the, vein us. pipes, Without do than.

- sectional men of the circulating tubes con nected to the uptake headers of the lower bank being less than the combined ci'oss sectional arcs of the tubes of the lower bunk,

substantially as described.

2. A steam boiler having a steoni end water drum, two banks of inclined tubes, one above the other, the tubes of the-lower bank-being lonoer than the tubes of the upper hank, heu en's connected to both ends 3 of the vtubes v ofhoth banks, the downtohe headers of the lower bank being directly be low the "headers at one end of the upper bunk, circulating tubes connected to said headers of both be kgccirculating" tubes to the headers of the eper bunk end the drum, and circulating" tubes connected to the headers at the uptake end of the lower hunk and the drum, the cross sectional area of the lastmentionedltubes being less than the combined cross sectionul area :of the tubes of the lower bank, substantially as de scribed. v f

3. A steam boiler having a, steam end water drum, two banks of inclined tubes, one above the other, the tubes of the lower bank being longer than the tuhesof the up poi bark, headers connected to both ends of the tubes of both banks, the downteke headers of the lower bunk being directly be low the headers at one end of the upper bunk, cirouletingtubes connected to said headers of both banks, circulating tubes to the headers of the. upper bank and drum, circulating tubes connected to the hecders at the uptake end of the lower hunk end the drum, the crosssectional arcs of the lost mentioned tubes. being less than the com bined cross sectional area of the tubes of the lower bunk, o longitudinally disposed beilie above the upper row of tubes of the lower hunk, and a long; -dinelly disposed haflie above the lower row of tubes oi the lowev bani-i, their; being suilicient space hetwecn haihes to permit all of the prod nets of combustion to pose longitudinally along the tubes of the lower hunk, echelontielly as described i, A steam hof having it end water drum, unis of inclined tubes, one above the other, the tubes of the lower testimony per 'bei'zk, heeders connected to both ends of the tubes of both banks, the downteke' headers of the lower hank being" directly be-- low the headers zit one end of the upper bunk cii'culetin tubes connected to said headers of, both banks, circulating tubes to the headers of the upper bank and the ileum, circulating tubes connected to the headers at the unto/lie end of the lower bank end the drum, the cross sectional area of the lustnientioned tubes being less then the coinln'ned cross sections arcs of the tubes of IShc lower bank, a. longitudinally disposed bottle above the upper row of tubes of the lower bunk, 2i longitudinally disposed baffle [above the lower row of tubes of the lower bank, there being sufiicient space between said hoffies to permit all oi the products of.

combustion to pass longitudinally along the tubes of the lower bank, and a plurality of vertically disposed cross bodies to? the up-- per ban of tub-es, sold bellies giving the gases three passes across said hank of tubes, substantially as described 5. A water tube boiler homing u steam and wetei' drum, two banks of inclined tubes,

one above the other and lying wholly with in the casing, the tuhcs of the lower bunk being of 'ieetei' length then those of the upper beiih whereby a space is left above the uptake end oi the lowcrrbenk back of the uptake headers of the upper hank, headers into which the ends of the tubes are expended, the downtoke headers of the two bunks being nippled together or continuous and those of the upper honh' connected to the water space or? said drum, independent tubular connections from the uptehe heodei's to cold drum, n longitudinal bei tle supported onthe lowermost row of tubes oi the lower bonk and. extending from the downtoke heed-er, ported upon the uppermost row of tubes oi" the lower bank and extending from the uptake header of said benlz overlapping "the lower beille, whereby call of the products of combustion caused to pass longitudinully oi the tubes of lower hunk, tronsverse heiiies dividing the upper bent: into a plumlity oi? transverse posses heginning ut the downtehe end, said tubules connections having; less cross sectional area than the combined cross sectional ores ofthe tubes ot the lowermost hank,

l have hereunto set my hendQ d ll'isiii .hl. BELL itiieei res lite n second lon itudinel hefile su i- Mill

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