US986090A - Steam-boiler. - Google Patents

Description

Patented Mar. 7, 1911'. 4 SHEETS-+SHEET 1.

STEAM BOILER.

APPLICATION run we. 16. 1910.

zziiiiziitttjj mm; TOR .Jfz'zzoitWSewaZl M. W. SEWALL.

STEAM BOILER. PILIOATION FILED AUG. 16, 1910.

Patented Mar. 7, 191 1.

4 SKEETS-SHEET 3 WITNESSES er I mag/ 5% M. w. SBWALL. STEAM BOILER. APPLIOATIOR FILED AUG. 16, 1910. 986,090., v Patented Mar. 7, 1911.

4 SHEETS-BEBE? 4.

IIIWIIPIII MIIIIIIIIIIMIUIIII WITNESSES HINIIENTOR I BY AITORNEY? NITED STATES PATENT OFFICE.

, MIN OTT W. SEWALL, OI ROSZLLE, NEW JERSEY, ASSIGNOB TO THE B ABCOCK & WILCOX COMPANY. OF BAYONNE, NEW JERSEY. A CORPORATION 01 NEW JERSEY.

STEAM-BOILER.

986,090. Specification of Original application filed June 12. 1909. Serial m. 501.751.

1910. Serial No. 577.480.

To all whom it concern:

Be it known that I. Mixo'r'r W. Sruzum,

a citizen of the United States. residing at V of Lpmn and State llN'tfltQtl certain new 14) 'June 12, 1909, for steam-boilers.

The object of this invention is to produce a water tube steam boiler having the essential features of the inclined type of water "tube boiler, asregards position of tubes, po

sition of headers and circulation of water' and steam, which can be built at a reduced The circulation of water in an inclined tube boiler is upwardly through the inclined tubes and the uptake manifolds to a horizontal drum or horizontal circulating tubes,

, through such drum or circulating tubes to. I the opposite end of the boiler and down thro the connections between the horinon cinmilati tubes or drums to the downtake manifo ds, and thence into the inclined water tubes. Such boilers are usually formed of straight tubes expanded into sub- 'stantially vertical sinuous headers or into water legs formed of stayed flat surfaces I with suitable drum connections at their up- .per ends. There is laced o posite each tube in the manifol s a h old fitting for I access to the tube ends, both for the expansion of the tubes in the headers and for the a -purpose of cleaning. To enable this tvpc o boiler to be more economically-built 1 proride large manifolds for-the -in- I Y sertion of the tube ends of such dimensions" that a man can enter the manifold itself through a manhole to perform the work of expansion from the interior. The use of a y indrical tube sheet, that is the portion of the manifold in which the tube holes are bored. compels the bending of the tube ends to such form as will permit them tacnter the tube sheetrad' y. It is desirab in 7 this class of boiler that a su'n'icient quanti f of water be contained in the immediate .vi cinity of the water line so that an apprech able time may be required to cause a reasonablevariation in the water line; inord'er that such i'ariation may occur without danger of burning the tubes forming the heating 9 tion of theystem may be thereby My invention will be understood by ref- LettersPatent. Patented Mar. 7, 1911'. Divided and this application tiled August 16,

surface of the boiler. To obtain this desirable water volume the downtakemanifold is extended upwardly and made of a larger diameter than the manifold proper. By this means the necessity of the usual horizontal drums or cross drums, of the so-called horizontal and cross drum type of boiler, ma be eliminated and the expense and com icaneed.

erence to the accompanying drawings in which- Figure 1 is a side elevation of the boiler and its setting; Fi 2 a transverse section on the plane of the inc 2-2 looking toward the .rear of the boiler; Fig. 3 a horizontal section on the plane of the line 3-4; of Fig. 2; 4 a horizontal section on the plane of the line 4-4 of Fig. 1; Fig. 5 a side elevation of a modification; F' 6 atransverse tion on the plane of the line of Fig. 5z'aud Fig. 7 a horizontal section. on the plane of the line 7-? of Fig. 5.

Similar reference numerals indicate similar parts in the several views.

Referring to the drawings, the numeral 1 designates the uptake manifold and 2 the downtake manifold, the latter having an enlarged upward extension 3. The mani folds are connected by inclined water tubes -1 which form the heating surface of the boiler, and by the -substantiallyhorizontal ulirlrard extension 3 of the downtake mamfo In Figs. 1, 2 and 4 I have shown superheating tubes (i'having manifolds 7, 8, 9 and 10. The manifold 7 isconnected to the extension?! by a nipple 11, and 8 and 9 are connected together by nipple 12. The manifold 10 terminates at its upper end in a steam flange 13.

The boiler is iirwl from a-furnace 14 having a bridge wall 15, acombustion chamber 16, and a wall 17 for deflecting and the furnace ases, said wall 17 ha e openings 18 for fhepassageof the gusts gh The furnace and combudion chamber liege a roof Ill-extending rearwardly of the roof admitting the furnace to the boiler tubes 4;. The diaphragm 22 extends forwardly from the rear wall toward the walliL the opening 20 in the rear of said tubes 5 and the tube5 which connect the upper end of .the uptake manifold with theuptake manifold ,and forms with the roof l9 and the side walls of the furnace a pass 21 in which the lower tubes of the bank 4 are placed. The diaphragm 22 terminates a Sutlicient distance to the rear of manifold 1 to provide air opening 23 to admit the gases to the upper tubes of the bank 4, said opening exten for only a part of the width of the boiler, as shown in Fig. 4. A vertical wall 25 extends from diaphragm 22 to a roof 24 formed of-bri'cks laid on the top tubes of the bhnln The roof 24 extends from manifold 1 rearwardly to manifold bracket 34 manifoldg'the work of Ming-done from the forming with diaphragm 22 and vertical wall 25 two passes 27 and 28 among the upper tubes of the bank. Pass 27 is connected with 21 by opening 23, and with 28 by the opening 29 at the rear of wall 25. A connection to a flue may be made through opening 30 from pass 28. Bv this, arrangement three passes are obtained among the boiler tubes of approximately the length of the tubes. and approximately proportional in cross section to the gas volumes due to the temperature in the difierent parts of the boiler.

At the front of the boiler between manifold I and the. side walls are doors 31 for access to the interior of the setting for the renewal of tubes and for cleaning the exterior of the heating surfaces. At the rear the wall is built from the floor line up to the roof 22 of; the pas 21. Above this wall I provide doors 38 by which access may be had to the tubes for cleaning and to the manifolds of the super-heater tubes. As shown in the drawings the outer tubes are bent from the center-line of the two inanifolds to the extent that the spaces between the side walls of the boiler are greater than the manifolds, and substantially filled with tubes- This cebetween the sidewalls and manifolds is th convenient: for cleaning and the removing of tubes in case of repair. The weight of the rear manifoldis carried on beams 32 through the saddle 33, the

serving not for carrying the weight but for stability of the structure. A semi-dmular wall 87 protects the lower end of the reai' manifold and allows access to the lowest point of the manifold for a blow-61f connection 39. The front. mmifcld 1 is supported on the small structural frame a a s am.

c early s on in a rtion of each of the manifolds yond the boiler setting and by doing an econmiy m Selling material and labor is ob tained. The exposed portions of the manifoltk will, however be with suitable non-conducti material to prevent radiation of heat. 7 each manifold is a manhole 1 for entrance to the the tubes e A .connection properly covered 40 will be provided for introducing the feed water into the rear manifold at a short distance below the water line, such line being through the center of the tubes Connections will also be made for the other necessary auxiliaries for a steam boiler.

The boiler shown in Figs. 5; 6 and 7 is adapted to the usual forms of settings of furnaces used for inclined water tube boilcrs. One feature of the construction shown in this particular setting is that ample access for cleaning the exterior of the tubes may be had through the doors 31 at the front, and 3S.at the rear, so that balilcs 42 parallel to the tubes may be used with the possibility of completely cleaning the tube surfaces. The manifolds may be supported in substantially the same iuanucr as before described, although in the present instance I have shown the rear manifold of Fig. 5 as supported -on a circular metal base 43 resting on suitably prepared foundations. The front manifold may rest on a metal base properly supported on structural work so as to give access to the furnace front, or it may be suspended to a frame of structural work ssing over-the top of the manifold as in 1g. 5.

In the form shown in Fig. 5 the tubes .4 must enter the manifolds at right angles to their vertical axes and this requires that the tubes. be bent in more than one plane. That is in the construction. of Fig. 5 the general axis of each of the tubes extendsatan angle other than a right angle to the axes of the manifolds, while the tube itself enters the manifolds radially and at right angle to the takes of the manifolds. In'Fig.

1, however, with the manifolds slightl inclined the tubes arebent only in one p aue; that with inclined manifolds the gen 4 eral axis of eacli tube extends at a rightangle to vtheaxesfof' the manifolds apd the tubes enter the manifolds radiall By substantially vertical, therefore, ether in the 'fication or claims, I desire to include the slightly inclined setting of the manifolds shown-1n 1. Both the uptake and downtake mfinifo ds may be made of ap rcximately the same length, and the bofier may be supplied with' a cross drum with tube connections between it and the vertical manifold, as is customary for cross drum boilers of the inclined water tube type, or-a horizontal placed above the manifolds and suitably connected by nipples as in the horizontal longitudinal drum type of inclined water tube boilers. In fact these manifolds are tible of ads tion to many of the 125 usufl forms of inc ed water tube boilers now in the market; For thep'urpose of replacing or repairing tubes it is that.

a verticalspaceflsballexistad acentto each horizontal row of tubes 4 by inaking lougitudinal'drum mav be 45 ldwer of the doWntake liianifold, and

: clm'ed tubes arranged'i'n verticalrows hat-'- 50 in horizontal 'nately greater and less than twice a tulxdi- 3 l lnet efg'ftheends of-sai d tubes being so bent i asto' enter radially the tube sheet of in lined '3 ,of the ItubeLsheets. m1- of alternate vertical spaces between the horizontal rows of tubes respectively greater and less than the diameter of a tube, as shown till-11! and 50 in Fig. 2, v ,5 The tube 5' connecting the steam spaces in the" manifolds rovides a direct passage "for the steam to t e steam drum and leaves the pipe 5 freefora-Avater passage. \Vh'at I claim and desire-to secureby Lettcrs Patent of the United States is I 1. A steam boiler hating an inclined bank of tubes, an uptake manifold of uniform diameter throughoutits lenfithlzaa don'ntake manifold having an upper'e'y ricalseetion 15 of substantially reater diameter than the lower section, am a main steam outlet connected to the upper section oi-tlie downtake manifold, said tubes being bentiaft their ends I and expanded intq the u ke'manifold andthe lower section'of the' wntgke rnanifoldi 2. A steam boiler comp uptake'and downtake cylindrical manifolds, heat' tubes into manifolds, the en of the tubes best so astnenter themanif olds radially in peimitting thereby all of the tubes tobeexpa'nded into the lube .of the manifolds in an inclined bank of substantially grexater width than the ofthemanifods. 0 3. A steam boiler having a bank of inclined'heating tubafmanifoldseach having a. section of equaladaptd to. re oeite theends of of said mnni-' folds an up 'sectionofjgreater dithan'the tu section, said bank of of greater widtl than thetube-receiving section;

4. eomprisinga f j ee ndi l 93'- v seem a upper of greater diameter than the layer. section, said tubes be ng into the uptake manifold and the eir'eulation tubgi the npperends 5- Asteamfboil'erhaving-a bank-of mcent'er distances of substan- ,y twice a tube dianieter and horizontal finiyshaying vertical center distances alter-1 manifoldseylintlriml in formand of uni; forlnfliameterthroughout at'lea'st the. length v a diameter sulr .j sta nti ally' i idth of the bank of Anemone eampnan subainiiil ;tiall v vertical uptake opening in said second baflle extendi jeyitofthegases. 8. A steam boiler comprising substantially said manifolds, a bflle throuqh' the'second ballle.

and batiie extending don'ntake above a portion of the tubes. and

vertical wall dis tion of the tubes and resting-upon -forwardly from the 'dle baflle and extending rearwardly the uptake.

EA steam boiler and downtake mani, folds,inclined tubes comprising substimL e;--. connecting said manifolds, a baflle supported by the lower tubesand extending I p a second bailie extending forwardly from the downtake above a portion of the tubes, an a por tion of the width 6f the boiler and at the frontends of the tubes-a third baflle extlending from the uptake to the downtake an supported on the tubes, a vettieal wall disposed'axnong the upper portion of "the tubs and resting u extending rearward y from the uptake manifold and dividing the spa middle and upper baflles'into two passages extending the third baflle having an opening located in the rear of the uptake manifold to, permit, the

vertical manifolds, inclined tubes connecting said manifolds, a baffle" Supported by lower tubes andextendin'g'from 'one manifold to-- ward the other a second bafile supported by intermediate tubes and extending from one manifold totheother and tubes 'andlextending from one manifol the other,- and. a tert ical wall disposed among the upper tubes. and resting upon the'niiddle bame and'exte'nding-in the same'directioi as :9, Asteam boiler eomprising substantiallyvcrtiml manifolds. inclined tul'ies connecting supported by lower tubes and extending from one manifold to wardthe otheig'a second .bafllesupported by intermediate tubes-and extending from one manifold "to the other and having an open- 'ing therein, a third baflle supported by upper tubes and extcndin'g fmm, one manifold tothe other. a vertical wall dispoad among the upper tube-sand wsting upon the middle bathe and extending: in the same direction as'the first-named ltllllfi said upper bame hating an opening then-in on the opposite side of the vex-tits! afile from the opemng 10. n a water tube boiier. two parallel inclined cylimlricalmani folds. a plurality of rows ofin'clim-d wat r! ubes manta-ting said manifolds the general axis at Qilffll of said tubes extending at a 1- lit-anglito the axis ofeach'lnanifold andi manifolds radially.

ce between the length of the tubes and said e tubes-entering the rearnrardly from the -uptake-,-Q

n the middle baflle and i girl hitting an open- 7 therein, athird' baflle supported by 11. In a water tn'be b0 -clined cylindrical manifolds,

5 a plurality of rows of inclined water tubes connecting sa ofwach of said tubes iler, two parallel inf one of said-f water chamber, of each manifo d and manifolds radially,

id manifolds, the general axis;

extend at a rightangle to the axis of eaeh manifold and the f film-entering l 0 horiadntal circulation tubes upper. d5 of the manifolds.

the manifolds 12.- a water tubeboiler, manifolds,

connecting the radially, and

two parallel a plurality of rows of inclined water tubes connectinp said manifolds, the general axis of each 0 said tiibes extendin at a right-angle to the axis and a pipe connecting said manifolds above the water line.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witn MINOTT W. SEWALL. Witnesses:

B. Pn'n-msox, E- P. TERRY.

e tubes entering the.

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