US1926707A - Marine stoker installation - Google Patents

Description

Sept. 12, 1933.

E. WHEELER MARINE STOKER INSTALLATION Filed Oct. 50; 1931 v 3 Sheets-Sheet 1 Sept. 12, 1933. WHEELER MARINE STOKER INSTALLATION s Sheets-Sheet 2 Filed Oct. 30, 1951 Sept. 12, 1933. E. WHEELER MARINE STOKER INSTALLATION 3 Sheets-Sheet 3 Filed Oct. 30, 1931 IIIIIIIH" sap Patented Sept. I2, 1933 1 resists-Ian T LAH 7 Edward Whler,"*AldwyiihjLondeni'EnglamL-assignal" to American Engineering Company,

at Philadelphia, Pat, a corporationioff Pennsylp is Claims-K01.- 122-116 This invention relates to improvements instoker-fed furnaces of the type disclosed in the U. S. application 'ofiI-Ierbert E. Prestonyse'rial Number 484,425, filed-Sept.=',-1930,'and a princie pal object' of the invention is to providefa novel fluid-cooledwall structure so designed astolineet the requirements of marine practice and adapted primarily for useinconjunction' with-stokeninstal'lations of the-aforenamed character; t 7

1 More specifically, an object of the invention is to provide a-tubular fluid cooled wall structure of simplified and exceptionallyicompact "form. I

Another object is to provide a tubular fluids cooledrea'r wall structure particularly well suited l to ma1*i11ei11stallations of Stoker-furnaces.

A still further onject crime invention is to pro vide a -fiu'id'coo1edwall structure of the stated 7 type having novel means of support providing for free expansion=and contraction of the wall due to changing temperatureconditions:- s 3 i The invention further resides in certain novelstructural details and mechanical features here in'aftr set forth fandillustrated in the attached drawings, in which: Y

marine stoker installation including 'alfluidecooled wall panel made tion; f

- i i A 1 Figf 2 is an enlarged fragmentary sectional view illustrating'the detail structure of one'uof thefluid-cooled wall structures sho'wnjin'lilig 1;

' Fig. 3 is' a rear elevational viewuof the panel "{iFig. 4 is asectional view illustratin another form of fluid-cooled panel-made in accordance with my invention; r r

The installation" of 'mechanical stokersiflin marine vessels is complicated by severalfactors of which one is'the extremely limited available space,,particularly as to head room; For this and other reasons, ithas generally been iconside'red that tubular fluid-cooled walls-whichare most:

eificient for striker-furnace use, were unavailable for marine installations By the present; inve'n tion, Lhave provided atubula'r fiuid cooled wall structure which meets all the exacting conditions ,of marine usage, is extraordinari-ly ornpaet in 7 form, strong and *durable, .yet capablez of. .withp standing all the extraordinary strains to which its.- necessarily is subjected. and in which iull plpyi- 'sion is made forl expansion and contraction due H to temperature:changesiy r With. reference to the.) drawings; the stolier illustrated is of the multiplesretort 'nnde'rgfeed type comprising qaimain iuel-sllppvrtin Sit- 1 also functioning in the presentinstance tofec'dthe ash from the bottoms-of the ash pit outwardly M i Y v instance; the furnace is. illustrated as of the Fi'gure 1 is a transverse sectional .view of a in "accordance {with my inven 'Referringytoqi' i 11; it' Will be nptedthat the roll 11.. The izearlwali' le withri srh li e 1. is

Bass] Alatter portion and the upper 5 s ture consisting of aseriesofltuyeres 1 and; retorts 21in alternate arrangement, said jtuyres fand retorts? being inclined downwardly fromefront to. .f

rear. of Jthefurn'ace and terminating *in adead. plate a. Immediately below the dead plate is an I extension grate fisbelow which in turn is the furnace ashpit 3.. ,A primaryram, operates in a cylinder fl tofeed fuel from a hopper '7 into the upper endiof each oI-the retorts 2, and a seconds ary 7 rain or J pusher 8 "is. provided in each of said reterts for aiding in the-=proper "advancement or feeding of the fuelin theila'tter; Suitable mec anisnidesignated generallyby the reference numeral Q'is provided foruactuating the-'mainrarns and pushersfi, and also for actuating the ,eXten-' sionzgrate 5. -Injthe'bottom of the. ashpit 315a crushersroll 11 which cooperates with'a crusher plate l2to'break up the clinkers andlarge particles of ash deposited in the ash pit,.the,'crusher. r011 11 through ais'ide opening 13 into the space exterior of the rear wall 'l ofthe furnace. In therpresent essentiallythe same and corresponding parts are designated byftheisaine reference numerals.

rear wall 'l ucemprises a lower panel 15 which form'snthe rear wall oftheashpit 3 and which terminates 'at-..its lower: edge at ,the top cgfythe opening--l3th-rough which'the .ai shesarepassed I I as previously set forthpy action of the'crusher shown in greater detail innFiQS-QZ t. therein illustrated; the upper, pgrtien 9 th is issuppcrted on a transrerseearq :17 :W turn'is supported at its ends upon upr ht b ams 18. 11118 paneirlfi is suspendfid mmed 6. '39 lowthe beam 17' and HD1391 W; 1 fills -the *spacebetween the lawn eds i he a char e o n n 31 h rm l cbmn ises "an upper headerzrand alower heads. 22 connected together through the medium cf series vor row of tubes "The headers ZlQand 2 2 and the connecting pipes 2;3 are sQnnectedl-in a Qi C r 1 ..ing fluid system; :threnghapipegs enteringljene endlof theupperheader-fil anda nipez entering 65 space intermediate the walls Hand and'desigtact with the tubes 23 by means of},clamps 27 which engage the opposite sides of the tubes to gether with bolts. or studs 28 whicha are secured I in the blocks and which pass between adjacent tubes and through the clamps 2'7 and are secured to the latter by nuts which engage; the outer faces These blocks26 form the effec-' of the clamps. tive wall surface of the panel .16. Blocksofthis general character and their associated clamps are illustrated in U; S. Patent'No; 1,719,642. 'It will be noted that the lowermostseries'of facing blocks 26 are formed toembracethe inner face-bf the lower header 22', each block having a depending front portion designated 29.-which passes down-j wardly over the face of the header. 1' These blocks" are secured in position in the same manner as the other blocks and as described above.

The panel structure 16 is. suspended adjacent its'upper end upon .a' transverse beam 31extend-j ing between the upright beams .18. This beam 31 has a projecting shoulder*32, formed in the present instance by an angle. bar secured to-"the be'am,upon which rests and towhich is secured by bolts 33. an angle bar 34, one leg of this bar being secured to ,the' panelstructure by: means of the. bolts 28 which secure the upper series of facing blocks 26 to the tubes: It' willibe noted that the panelis slightly inclined to the vertical,

' and the lowerdependingportion'of the panel is held in position through the mediumof an angle bar 35 a secured between the upright, beams 18' one leg of which extends downwardly between tongues 36-and 37 extending upwardlyfrom an angle bar 38. secured to the panelstructure by the bolts 28 which secure one of the lower series of facing blocks to the tubes. This arrangement has-"the effect of securely anchoring the lower. depending portion of the panel in thenormal position while at the same. time providing for free expansion of the panel longitudinally of the tubes.

In the present instance, the space between the bottom of the upper wall'portion' and the upper header-21 is filled by a suitable refractory cement .39 which is held in position by flanges 41 dependingfrom the under side of theupper wall'por-k tion and flanges 42 projecting from the inner face of th'e'upper header-21. Since, the upper header is fixed substantially rigidly with respect to the fixed portions of the wall, there is no tendencyforthis packing cement to becomesloose; Inthe present instance also I have showntheiouterface c of the panel covered with alayer ofsuitable asbestos orother cement 43 which is supported in positionby the various flanges and beamsde scribed above and by a projecting flange 44 intermediate the top and bottom of the panel;

- The panel structure described'above is ex-' tremely simple inform, iss'tructurally strong and durable, includes provision for expansion and contraction due'to varying temperature conditions, and is highly efficient in its function.

- Referring *to' Fig. '1, it will be' noted that the nated-by the reference'numeral 45 constitutes an ash-removing space, and also provides for free access to theouter faces of -eachtof the walls 14and 15. The'fluid cooled lower portion of the latter wall while being in principal similar. to that previously described-differs somewhat in detail and constitutes in effect a modification "of the fluid-cooled panel'previously described; 'As in the previous instance, the upper portion of the forms an ash-removal chamber; 7'

' the opposite end of the lower header 22. The panel structure further comprises a seriesv of fac ing elements or blocks 26 which areheld in con.

wall l5 is supported by a transverse beam 46, and a fluid-cooled panel 47 positioned'below the lower edge of the upper 'wall portion fills the space between this upper portion and the upper edge of the ash discharge opening 48. In the present instance, anouter crusher plate 49" is provided in conjunction with thecrusher rolls-11, this 1 platebeing located directly below the lower edge of the panel 47. '-essential1y the same construction as that of the 'panel 16 includesjan upper header 51, a lower The panel which comprises header 52; and a'row of pipes 53 which connect these headers; The panel is connected in a circulating fluid system through a pipe 54 communicating withtheupper header and a second pipe 55 "communicating with the lower header. Facinggblocks 56 are secured against the inner facesof the tubes, to form the effective wall surface of the panel, by means of bolts 57 and c1amps58 similarto those previously described. The lower series of blocks,5 6' are'formed with 7 depending aprons which terminate above the top of the crusher'plate 49, and it will be noted that in this instance 'the'lower portions ofthe tubes 53 are turned rearwardly into the header 52 subion stantially at right angles to the line of the upper or main portionsof the tubes53. This panel structure'is suspended from a transverse beam-61 through'the mediumof the bolts 57 which'secure the upper series ofplates 56 to ,theptubes. The lower depending portion of the panel is held in position through the medium of pins .62 which extend downwardly fromthe bank of tubes-to ids which said pins are secured by meanspf studs 1 63 and clamping barsfil and 65. These pins pass through apertures in the flanged. top of a beam 66 mounted below'the panel structure,the arrangement being such-that while the panel is free to expand longitudinally of the tubes 53, transverse displacement .of' the lower end of the panel from the normal positionis prevented.

Thev upper flanged end of the beam .66 is confined between bars 6'7 and 68 depending from the-bottom of the panel structure, and the intermediate, 1

would. radiate. through the rear walls of the two furnaces, this beinga feature ofimportance where the space 45, as in the present .-I-jclaim:.

prising a supporting framework including-1a substantially vertical tubes uniting'said headers, means for suspending said tubes and headers from rsaid framework'at" a point.- adjacent .said

upper header, said means comprising a' trans.- verse anglem'ember securedto said panel,-.means for securingsaid member to the. angle member ing portion of said panel-while permitting free instance, p

1; A wall structure for marine furnaces comtransverse angle, member, a fluid cooled panel supported on said framework, said panel com- 'prising-upper'and' lower headers and a series of .offthe framework, and means for preventing transverse displacement of the lower dependmemo? v expansion of a said panel, said means comprising an angle membersecured near the lower end'ol' said paneland projecting transversely thereof, said member havingsecured thereto spaced vertically extending abutment elements and a structural member secured to said framework having. a depending portion extending between said abutment elements in slidable relationithereto.

2. In a device of the class described-the combination of a framework, a water wall supported on said framework, said water wallcomprising upper and lower headersand a series of substantially vertical tubes uniting said headers, means for suspending said tubes and headers from said framework at a point adjacent the upper header, andmeans for preventing a transverse displace 'ment of the lower depending portion of said water wallwhile permitting free expansion thereof,

said means comprising an angle member securedv to the water wall near the lower end thereof, said member having secured thereto spaced vertically extending abutment elements and an angle memlments in slidable relation thereto.

ber secured to said framework having one leg' thereof extending between 'said' abutment-V ele 3. In a device r the class. described, the cornbination of asupportin'g framework, a water wall.

comprising upper and lower headers disposed in substantially the same plane, and a seriesjof substantially vertical tubes uniting said headers,

means engaging said tubes at'a point adjacent said upper header for suspendingsaid water wall,

and means for preventing transverse displacement of the lower depending portion of said water wall while permitting free'expansion thereof, said last mentioned means comprising an angle member secured to said tubes near the. lowereend of said waterwall and having secured thereto spaced vertically extending abutment-elements and a structural member-secured} to said framework having,-a*depending portion extending between said abutment elements in s'lidable relation thereto. V V

' Y 'EDWARD'WHEELER.

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