US1657477A - Waste-heat boiler - Google Patents

Description

Jan. 31, 1928.

D. S. JCOBUS WASTE HEAT BOILER l Filed June 21. 1920 2 Sheets-Sheet l Origina INVENTOR ATTORNEY` @and U IHIHIIIII Jan. 31, 1928.

D. S. JACOBUS WASTE HEAT BOILER 2 Sheets-Sheet 2 Original Filed June 2l .www

R O Tl N E V W Patented Jan. 31, 1928.

UNITED STATES PATENT OFFICE.

DAVID S. JACOBUS, OF JERSEYv CITY, NEW JERSEY, ASSIGNOR TO THE BABCOCK & WILCOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

WASTE-HEAT BOILER.

Original application led June 21, 1920, Serial No. 390,358. Divided and this application filed November 7, 1922.

My invention particularly relates to a steam boiler which may be used either in waste heat work or 'l'or direet tiring, and in which a high rate ol heat transfer obtained.

My invention consists ot certain novel parts and combinations of parts particuilarly pointed out in the elaims.

The following is a description of a waste heat boiler embodying my invention in the torni at present ln'eterred by me, but it will be understood that various modifications and changes may be made therein without departing from the spirit ot my invention and without exceeding the scope of my claims.

My present application is a division ot' my prior application, Serial No. 390.358, which was tiled in the United 4States Patcnt Ofliee on or before June 21, 1920.

My invention will best be understood by reference to the accompanying drawings id which, Figure 1 is a longitudinal sectional view through a steam boiler for waste heat work embodying my invention; Fig. Q is a sectional elevation taken on the line QF?. o'i Fig. 1, with part of the figure broken away to show the tubes 13C; Fig. 3 is a sectional elevation similar to Fig. 2 taken between the bank ot tubes 13b and the baffle 50 in Fig. 1 looking to the right, and Fig. 4 is a Sectional elevation similar to Fig. 3 taken between the bank ot' tubes 13c and the battle GO in Fig. 1 looking to the right.

Referring, now7 to the drawings, 1() is an upper steam and water drum and l1 and l2 two lower aligned water chambers illustrated as separated mud drums which are connected to the steam and water drum by banks of tubes 19)", 13", 13d and 14, bent outwardly away from the center line passing through the two drums near one end ot the tubes `(as here shown, the. lower ends of the tubes), so that the two banks of tubes on either side of the center line are, spaced apart in the manner shown in Fig. 2, the direction of tubes troni the bent portions being inclined to the center line. In the form here shown, the boiler tubes are separated into definite sections 13b, 13c and 13d by baffles or walls and 60 extending transversely ot the drums, the batlie or batiies 50 extending upwardly from the foundation Wall 61, while the baille or battles are suspended beneath the steam and Serial No. 599,517.

water drum it), A wall 62 is disposed between the boiler tubes 13 and the economizer tubes lia. Alternate battles or walls 50 and 6;? toi-ming with the associated parts openings (i3 and (Si. respectively, at the top, while the alternate battle or battles 60, which extend downwardly substantially to the bottom ot' the tubes, are provided at their lower ends with two openings 65 on either side ot the eenter line, these openings being approximately in alignment with the tlm-s 57. The gases entering through the llues 5T, therefore, are directed against the bent portions ot the two banks ot tubes and then flow longitudinally of the tubes between the baille 50 and the end wall ot the lsetting, passing through the central opening (it-3 ol the battle 50. The gases then flow along the tubes of the second bank, and through the two openings G5 ot the baille 60, and, in a similar manner, over the remaining tubes, until they pass to the outlet ou, .trom which the gases are drawn to the stack by a tan 6T. The gases thus pass trom the inlet lues to the bent endsolpthe tubes where they are widenechand thence longitudinally of the tubes to thesingle opening G3 in the batlie 50, and so bn through the boiler, thegases passing serially over the banks of tubes delimited by the battles, and, in general, flowing longitudinally along the various banks ot' tubes. In the. arrangement shown in Fig. 1, the steam and water drum is extended, as at 10` toward the rear and th(` dry pipe 17 made to come in the part ot` the steam and water drum so extended, By employing this construction, the steam is taken trom above waterwhich is in a more quiescent state than .should it be taken at a nearer point to the trout end ot' the drum, and the advantage ot' obtaining steam ot' the maximum dryness is thereby secured. l have indicated at l5 soot-blowing elementsr for cleaning the boiler tubes.

I claim:

1. In a steam boiler, an upper steam and water drum, a lower mud drum, banks ot tubes connecting said steam and Water drum to saidfmud drum, each bank of tubes being bent near one end away from the center line through the two drums so that the two banks of tubes on either side of the center line are spaced apart, each bank being divided into a plurality of sections, and baffles l0- eated between adjacent sections of the tubes, alternate battles being Constructed and arranged to direct theI gases over the tubes at theill upper ends, and the other alternate baffles being provided witll two openingsl opposite the lower ends ot' the tubes and on opposite sides ol the eenter lille whereby the gases are directed in sel-iesl ol'er the seetiolls ot eaeh bank and longitudinally of the tubes.

2. In a steanl boiler, all llpper steanl alld water drinn, a lower lllud drun'l, banks ot' tubes connecting said drnnls, each bank ot' tubes being bent near one end away froln the center lille through the two drnnls so that the two banks ot tubes on either side ot' the renter line are spared apart. battles disposed between the tubes andextendine tl'ansliersely of .said dl'ullls. alternate battles being provided with openings at tlleil tree ends in the vieinty of the bent'. ends ot' the tubes 'forming thles on either side ot' the renter line, the other battlesv bein,"r tornled at their free ends to direct. the gases over the upper ends of said tubes.

3. In a steam boiler, an upper steam and water drum, a lower mud drum, banks of tubes connecting said drums, each bank of tubes being bent near one end away from the center line through the two drums so that the two banks of tubes on either side of the Center line are spaced apart, and n'leans for directing@r the lgases ill paths longitudiu nally ot the respective banks ot tubes, said nleans eonlprising bullies disposed between the tubes and extending transversely at their lower endsl with two openingsl ill the vieillity of the bent ends ol said tubes alld forniingr passages lor the gares on either .side ot the eenter line.

4. In a `steanl boiler, all upper steanl and water drun'l, a lower llnld druln, banks Vof tubes connecting said stealn and water drunl to said lnud drunl. eaeil bank being` divided into a plurality ol' seetions, and battles loeated between adjaeent sections of the tubes, alternate battles beine' constructed :nld :lrranged to direet the gases over the tubes at their upper ends, and the other alternate battles beiner provided with two openings opposite the lower ends of the tubes and on opposite sides of the center lille whereby the erases are directed ill seriesl over the sections of each bank and longitudinally of the tubes.

DAVID S. JACOBUS.

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