US895187A - Superheater. - Google Patents

Description

PATENTED AUG. 4, 190s. B. D. MBIBR. SUPBRHBATBR.

APPLICATION TILED DBO. 23, 1904.

6 SHEETS-SHEET 1.

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DO 00600 0000 J onora so no 5% n O C C 3 C D O SE O 0 O l PATBNTED UG. f1, 1908. E. D. MEIBE.

SUPERHEATER.

APPLICATION YXLED DEC. 23, 1904.

6 SHEETS-SHEET: 2.

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PPLIUATIOH I'ILBD DBO. 23, 1904.

s sanne-SHEET 2 NNI I 'uemi'oc .SY I SUM/wing' Murana, lx .una man It No. 895,187.A PATE-N751) AUG. 4, 190s. B. D. MBIER.

SUPERHEATBR.

APPLXCATIOX IILBD DEC 23, 1904.

6 SHEETS-SEEET 4.

APPLICATION FILED DEO. 23,' 190L @nV @Qn partying claims.

\ ln the accompanying six sheets of draw- TES,

'30- 'and the'invention consists in the features of structure, relative arrangement and disposition of the parts and their mutual operai ion, as will be fully described hereinbeltmr and more particularly pointed out in the accomfor'rning apart hereof, Figure 1 is a front elevation of, a steam generating apparatus including a superheater embodying my ingc. vent-ionFig. .2 is a vertical transverse sectionalviewof the same on the line 1-'2 of Frg. 3, Fig. 3 1s a vertical longitudinal section on t-he line 3-3 of Fig. 1, s rowing arts in elcvationpFig.. 4 is en enlarged plan view of a 2s valve mechanism with parts in elevation and parts m section, Fig. 5.1s a similar enlarged an non, rig.

4o and'Fig. 1-1 is an end positc mately horizont al the usual fire 1n elevation', 35 superheater end elevation of the Ysame apparatus parts in section, Fig. 6 is a vertical longitudinal sectionof a modified form of my inven- 7 is a detail of valve mechanism for use with the structure of Fig. 6, Fig. S isn vertical longitudinal sectional view of a suerheatcr, illustrating a number of U-tubes, Fig. 9 is anend elevation of the of Fig. S, partly in section to illustrate tlie interiorv construction of the head, Fig. 10 is a vertical longitudinal sectional view of a modified form of superhcater with the U-t ubes shown in elevation, elevation of Fig. 10 with the hand-hole. coverings removed.

AReferring first to Flgs. ly to 5, the steamV .generating apparatus is comprised of a water receptacle or ends with hollow water' legs .B connectedwith each other by means of a number ot'water tubes C. 'lhelegs B are support'edupon suitable foundationsso disposed vthat the water receptacle A 1s approxii although slightly inclined from front' to rear, as shown in Fig. 3 and as customer;r in boiler construction. The. water receptacle is surrounded by a wallingof masonrv built up around it so as to provide u box D with its flues or passages for the escape of the r-ouibusted gases. The

A r appiicauoiraieaneemberza,1904. serial intestines.`

with

oiler drum-A provided atop- Patented aug.' 4, lace.

path of the latter may be traced as follows?- rom fire box D rearwardly'in the direction of the arrows, throughpassage marked E, then upwardly and forwardly t-hrouo'h the series of water tubes- C, then upwardly and again rearwardl through an upper ir'c gas passage marked F and from thence upwardiy into a stack not shown, butconnected with the structure at the )oint marked G.

These passages are separate by the masonry in such manner that 0ll of the hre gases from t-he fire chal ber D must pass continuously through them, the upper and lower tiers of lire brick C and C2 being formed as shown, -for this purpose. The upper passage F.0ccupies the ent-ire width from side wall to sidewall of tho structure and a port-ion of the up-.

per boundary of the said passage F is formed y the lower half of the drum A, whereby the latter is also heated. The up )er side of 4tho I drum is covered with a la ver ot lagging, indi- 'ated in Figs. 25 by the etterH.

' Above the structure necessary to th perormance of the above functions, a superstructure 1 is provided, either by means of a continuation of the masonry walls above referred to or by means of a se arate structure of other material superposed) thereon.- The function of this superstructure is to provide an interior chamber 'ater receptacle with communication with the fire gas-passage F on one or both sides of the drum, and the chamber 2 may beof any suitable dimensions with respect to the remander ot' the apparatus but is preferably of about the )reportion shown in the drawing and located near to the steam delivery pipe 3 of the water receptacle." An aperture 4 is provided in the wall of the `chamber, preferably that wall which is proximate to the said steam deliverypipe, and a superheater, pres? junction of said chamber. andl p assfa'ge,'tiis mechanism bei ng preferably though notnecessarily operatable from the exterior of the Z above and around the -causing the seid chamber to form a virtual section of seid essege interposed in the flow of gases therethrough, or in nit-ermediete positions for allowingy but e. portion of seid gases to ilow through the'cliernher and its suner heater es e, lay-pass in this manner enebing a nice regulation oi the degree ol' superheet to be obteiued. The sneeie construction of the valve meehenisrn to accomplish this result is eepehle oi comida-able verietion from that shoon in thedrsr end' about to be deseribed, es will pi opp/eer. As shown in Figs.- 1 to 5, vo. ve mechanism consists oi' epivoted b e or volvo plete 9 mounted to swing from re: leolto horizontal position within o. the letter boing suitably built into or with the seid plate in e; oi' its extreme positions to torni e. coni cnous imperiorete partition. The framework is formed of o.

ormontel frame piece 5 supported on three sides by the mesom r? s and on the remaining side, whieh 1s e rent drum A, by means of e proJeetion or ledge 6 secured to the seid drum. At the centred portion of tno frame piece 5 en uprer :22d s. lower frame piece respectively d ted 7 and 8, ere secure so es to ent,L in s vertical direction end these freine pleo to serve as a sul portier fined h o 1f) 11, respectively disp d muove a. below thedrurn A insuhetesitislly the sigis plone es seid ver ticel freine pieces 7 ond. S. In one or the other o' these ireme ssc-:tions where they ere united, journal apertures are provided ror the transverse 'erle of wingnsgplete' As shown herein, the horizontal section (ll 1g. 5) contains such journal :mets and also p rovides o housing or gear casing 12 into which the seid sxle protrudes. il. Worm gearl?, 1s fest on this sx1-e within the casing end is engeged oy a Worm .1.4 on shift l5, which letter in Fie. 1.- `When plece extends forwardly through the structure'to the iront of the boiler where it is .geared with a similor she-ft extending honi the gesr cssing of the valve niechsnisni on the other side o" the drum, so that both o? the plates 9 moy be operated simultaneously end equally. Theeeering for this puro-ese 1s clearly shown its position subv stsntielly parallel with the passage F, the

pivot-ed plete on each side o the drum co operetes with the lower portion thereof nifl with the horizontal frame niece 5 to provide ed tothe iut-e-V rior of the chamber wells so as to cooperate' 'wardly from a continuous path for the tire ases through said passage, allowing noney o the same to enter the superheoter chamber 2. In its vertlcel position substantially at right ongles to the assess F, the late cooperates-with ,the xe hailes 10 endP 11 and Withthe' vertical frame ieces 7 and 8 to form e continuous befile intersecting end obstructing the asb sage F and directing the gases thereof into and through the superlieeter chember.` .In-

its intermediate positions, the heated gases may travel through bothpssseges in multiple and by reason of the superior position of the seid chamber the hottest gases will `nsturslly rise into the same the .highest eliicienoy to the superhe'eter compatible withl free escepe of gases from the region of combuston..

While the above described eppsrutus is referred. it should be observed 'that the lived baille ple-tes es Well es the framework reieired to muy be formed of masonry similer to 'the side Wells, if desired, without changing the iunctionsperiormed, yend that the gearing for eonjointly operating the pivoted lotes may also be located Wholly out side t ie structure.

nhe su erlieeter es 4employed in the epps1`- rotus so tsr described is shoin in enlarged sce-le in Figs. 8 and 9 ond consists of o heed 2() with o. number of U-tubes extending neurthe seid heed und disposed across the upper portion of the superheeter ehsrnber. An additions/l bsi'le plete 16 is pierced'b?r the lowertiers oi these tubes end 1s suiteby supported, es ifor exemple by chains, in registry with the upper edgeo" the beide plete 10 end ironie pic 7, thereby constraining the gases traversing the chember to ses twice through the su erheuter tubes, i ret in `en upwardly and tien in a downwerdly direction. The heed 20 lits in the aperture 4 above described, being prnvided with ineens not shown, whereby it is permanently retained thereinz sud the entire superheeter is preferably inclined trom hor:- zontsl so ss to permit water of condensation therein to be drained either through the supply steam pipe into the water receptacle or through e.A special branch connection 21 which leeds from the lowest point of the head 20 into the water receptacle and preferably debouches; into the latter et a point below the Water level therein. The heed '20 is composed of two o posits and parallel side Walls with integra flanges turned m the seme direction end 'oined by e. strap 23, as' shown .in Fig. 8, on( the seid side wells are also firmly reinforcedby a. plurality o f hollow rivets or steybolts 24. The interior of the heed is subdivided into e. number of compartments by means of partitions 22 and the U-tubes join the several compartments in such manner that steam entering thel iso Soenar The artitions 22 are not retuired to be l steam tight, inasmuch as the pressures on opposite sides of them are substantially equal, and they serve merely to contain and direc-t the travel of the steam, insuring that. thesteain from tubes of different temperaturc be thoroughly mixed in transit. Oppon site each of the openings of the U-tubes handhole openings 25 are provided in the opposite head plate and removable closures 26 normally cover them, as shown in Fig. S.

In Figs. 6 and 7 is shown a modification of the foregoing structure in which the superstructure is permitted to be. of less vertical dimension and the valve mechanism is corrcspondingly modified. In these figures the superlieater is com osed of U-tubes so arranged as to straddlc the top of the boiler drum or it is composed of two separate superheaters disposed above and on either side of the same.

The valve mechanism is mounted in a horizontal frame ieee 5 with a depending vertical section wiieh cooperates with two oppositely swingiiigvalvcs 9', 9', the latterl being capable of swinging from a. horizontal to a vertical position and thereby constituting in the firstV instance a closure for the chambers and in tho second instance a baille for the tissage F directing the gases therein upward y and downwardly through the superheater chamber. The short vertical and fixed baille plate t6 is supported around the lower tiers of the sulperheater tubes, in

registry with the valve p ates when in verti cal position and constrains the hot gases to )ass twice throueh the superheatcr tubes.

hesuperheaterofpropers hapc for this modiiication is shown in Figs. 10 and l1 and con sists of a head 20' similar in structural formation to the head of the superheater previously described, the U-tubes of this forni being disposed in airs close together so that a single hand-ho.e opening 25 may be provided fortwo ends instead of for one only as has heretofore been the )tactic-e, and this arrangement of the tu es also permits free passage of the gases in the chamber 2 between them. ln Fig. 1l, the hand-holes 25 are shown open to indicate the connection of tubes within, but in operation the steam is of course confined within the headand entering as before et. the coupling flange 30 travelsV through tubes marked l into the next-lower compartment and from thence through `tubes "f, m into the lowest compartment and froml this compartment thrcugli tubes n into the' I next and so on through tubes o to the Outlet Y 31. 'In the modified forni of F ig. 6 the two superheaters may be arranged to receive saturated steam from the water receptacle in series or in multiple, as desired, and in thisl modification is also illustrated a different and simplified type of valve o erating mechanism. The two pivoted va ve plates 9,and

9 sus ended from a common axis are connectc( with double chains 32 led over aroller and oniiected to a pull rod 33, where-580 by they may be raised or lowered, as desired. Thel chains of the valve mechanism on bot-h sides of the drum may obviously be operated by a'single pull rod.

In Fig. 7 the valve plates 92, 92 are inount- 35 ed on parallel adjacent axes and geared together so that movement of one is imparted to the other through the gearing, thus reouiriiig but a single chain for each sido of the drum A.

lVhen the apparatus-of this linvention is put into operation the valve mechanism is manipulated to lclose communication bof tween the fire. gas vpassage F and the superf heater chamber 2, so that the gases from the fire will pass directly through the passage into 4the stack. At this time, moreover,` water of condensation in the superheater may be drawn into the boiler drum by opening the cock in pipe 21 which cock, however, 100 may remain open as long as the superheater is used. As soon as steam becomes generated 4and fills the siiperheater, thevalve mechanism may be opened to any extent desired according to tue degree of superheat re uired, and the fire gases in the passage wil be constrained to pass around the U- tubes of the superheater, as above described, the entire superheater chamber passage or by-pass receiving a constant supply of hot 11o gases and oflering no ockets for hie sameto lodge in and become t eed.

Having described in v A claim 'and desire to secureby United States Letters Patent, is:- 115' l. ln a. steam boiler, a. water receptacle' having a horizon-tal assage for fire gases ex--l tending longitudin .ly beneath and along the sides thereof, in combination with a,-

structure forming a chamber over said receptacle having. communication with said v fire-gas passage on either side of said receptacle, a superheater contained within said chamber, and means for controlling said communication. v

2. In a steam boiler, an approximately horizontal water receptacle, a pluralit-yof water-tubes beneath the same and connected g therewith,A and a passage for fire gases befj g tween said receptacle and tubes, in combi- 1&0

invention, what I V rf *"r. f

neath and along the sides thereof and eading to the escape stack, in combination with a superheaterchamber above said receptacle, having ,communication with said passage adjacent'to the'side of said receptacle and means for controlling said communication. 4

4. In a steam boiler, a water receptacle and a longitudinal fire-gas passage beneath the same eading to an escape flue, a superheater chamber vover said receptacle, said chamber being independent of and isolated from said escape Hue and having a communication with said passage, andJ means for closing said communication, in combination with a superh'eater in said chamber labove the water level of said boiler and a "drainage pipe from said superheater to a A point below the water level in the said receptacle.

5. In a steam boiler, a water receptacle, a

. fire-gas passa e beneath the same and a super-heater c amber over .said rece tacle adapted for communication with ssii passage, in combination with valve mechanism 'and a single member to operate the same,

said mechanism being adapted to isolate the chamber from the fire-gas passage or to interpose said chamber in the path of said iregases, 4according to the adJustment of the said o ei'ating member.

40 6. n a steam boiler,`a water receptacle provided with a bank of water-tubes connected thereto, a superheater `chamber above 4the waterline of said rece tacle and a vfire-gaimessage between said c iarnber and 4t the said bank of wateitnbes, in conibination with valize mechanism adapted to be operated to isolate said chamber from the said passage or to divert the gases in the latter into and through said chamber.

A7. Ina steam boiler, a water receptacle, a passage for fire gases and a structure harming;l a superheater chamber in communication therewith, in combination with valve mechanism pivoted in the region of the junction of said chamber and assage and ads ted to -constitute e. closure or either, wherepby the 'gases in said passage ma be delivered to or .excli'ided from said cham er.

8. In a steam boiler, ,a water receptacle, a

passage for fire-gases and a structure forming a superheater chamber in communica- .i tion with saidV passage, in combination with .valve mechanism located in the communication dividing the same into entrance and exit a5 passages or the chamber, and means for operating said 'mechanism to cause it to;

c ose said entrance "and exit passages or to intercept the said 'lire-gas passage to direct the gasesinto and through said chamber.

9. Iii a steam'boiler, a water receptacle, 'a

passage for fire ases and a structure forming a superbes-ter dliamber having communication with said passage, in combination with l a pivoted baille plate having its pivotal axis i mounted iii the region of the center of and across said communication and ca able of plate swingino into said passage, the said being el? such dimension relatively to said ,passage as to constitute an obstruction to the latter when i'n one position and to form a closure for said communication when in another position.

10. In a steam boiler, a. water receptacle Aand a structure providing a fire gas passage and also a siiperheatcr chamber in communica tion with 4said passage, in combination 'with a plate pivoted 1n the region of the junction of said chamber and assafre transversely to the latter, a fixe baille plate within said chamber adapted to register with the pivoted plate when it is substantially perpendicular to said passage, and a supereater in said chamber disposed on both sides of said fixed baffle plate.

11. In a steam boiler, a water receptacle, a

fire-gas passage beneath the saine, a superheater c iamber above the waterline of-said receptacle having communications with said passage respectively on opposite sides of said receptacle and means foncoiitrolling said communications.

12. In a steam boiler, a water recpptacle, a structure providing a passage for ire gases and 'a super-heater chamber in communica-A tion with said passage on either side of'said receptacle, in combination with tacle controlling said communication and means for eonjointly operating said plates from the exterior of the structure.

13. In a steam boiler, la boiler drum, a.

.fire-gas passage beneath the saine vand a suivoted valve plates on 'opposite sides o'f sai recepledge or projection on the sideof said drum, a. y

framework su ported bysaid ledge and by the wall tof tie inclosinv structure, and a. valve pivotally mounteda in .said frame to close said communication or to net as a ber above the dro111,aseco11d fixed baffle bebafiie directing the How of gases in said passage into and through said chamber.

15. In a steam boiier, un approxnmtely horizontal boiler drum, and a structure providing a. superheaterA chamber above said drum, a fire gas passage beneath the same, and a communication between said chamber and passage on either side of said drum, in combination with a pivoted plate acting as n.

.closure for said communication when in horizontal position, a ixed bafile in the chamneoth the drum adapted to register with said phite when in vert-ical position, whereby the, ilow of vases in said passage. may be directed into and through said superhea-ter chamber.

In testimony whereof, I have signed my name to the specification in the presence of two subscribing witnesses.

EDWARD D. MEIER. Witnesses:

H. G. KIMALL,

JOHN J. MCELmN-NY.

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