US847407A - Steam generator and superheater. - Google Patents

Description

PATENTED M1111. 19, 1907.4

, a SHEETS-s111131 1.

S14/@Whoa www l C14/fg# 1*. 111111111111011. STEAM GENERATOR AND SUPERHEATER.

-APPLIOATION FILED APB. 8, 1905.

PATENTED MAR. 19

P. A'. JHAUlJfHToN. STEAM GENERATOR AND SUPBRHBATER.

APPLIGATION IILED APR. 8,190.5.

' SBHEETS-SHEET 2,

lSTEAM GENERATOR AND SUPBRHBABR.

' APPLIUATION FILED APB.. 8,1965.

v3 SHEETS-SHEET 3.

UNITED STATE@ irgrENT onirica.

FRANK A. HAUGHTON, OF SCHENECTADY, NEW YORK.

STEAM GENERATOR AND SUPERHEATER.

perheaters, of which the following is a speci'- y Leo - My inventionrelates to' an improvementsin steam generators. and steam-superheaters, Aand .has for lts object to provide an effective superhe'ater in'i combination v'th' a'` steam.v

generator that will give a high temperature of superheated steam and at the same time be simple, rangement. I

VOne of the4 principal many forms of superheaters is the obstruc tion ofthe lues'v or fire-tubes by the superheating apparatus, which eitherinterferes practical, vand accessible in ar- Withthe draft o r causes the lctdgment of cinders and sparks in the said luesor fire-tubes to'such an extent-as to entirely closethem,

- tion and accompanying drawings.-,-

y j which not only impairs or "entirely prevents 2,5

superheating, but `causes great mconvenlience becauserof the fact that they have to Anothercommon objection to many forms parts inmaking repairs and the large numer of joints, which arelikely to leak and give trouble. t. a

.Itis my aim to.' overcome-alli such subjections by this invention, the referred form 'of whichis described in thefo owing specifica- Figure 1 shows a'lonvlfudi tubular or locomotive b superheater removed.' 2 isk a" cross-seetion of Fig. 1onl1ne 2 2.51? i 3 is a longituv dinal section of one form of t e superheater.

. 4Fig. f fis a front elevation of the super-heater.4 .Fi`g.,5 is al longitudinal sectional elevation of.. theboilery .and superheater assmbledi a Fig. 6 is asecti'on taken on line 6'6. Fig. 7 is af longitudinal section' of va modified form of L viewl off-the' `front end of the superheater,

.2 is the fire-box, 3 the'smoke-bfn "the 55 superheater. f Fig. 8 "is an enlarged sectional shownin-Fig. y Fig. 9 is a ycross-section online 99,2'Fig. y8.

Referring tok tube orllocomotive type.

Fig.A 1', lis abcile'rl'of the'iref steam-doma, 5.the pipe leading 4from Speccation cf LettersPatent.

Application mea April 8,1905. serai No. 254,544.

, defects common to.

tube-sheet 13.

oiler constructed in" accordance .with my inventlonfwith.-` tbe` Patented March 19, 1907.

near the top of the dome into the superheater, as will be hereinayter described.

- 6 is a throttle-valye.by'which steam is ady mitted into `the dry p ipe. 7 .'s 'a chamber, preferably cylindrical,

Which opens into .the smoke box 3 and ex-l tends back into'theiboiler toward the fire# I box 2. This chamber is composed oi' theside walls 8, which are the Walls of the boiler and at its back end terminate in a head 9.

,10 a\ short fire-tubes which extend from the irex tube-sheet 11 to the head 9 and which are referablyxpanded into the tube- Preferably .and as shown these tubes project 'sheet and thehad to make them steam-tight.`

from the head'Q fora short distance for a purpose to be hereinafter described. Around the chamber 7 are the retubes 12, which extend from the fire-.box tube-sheet V11 to the head 13 at the front end ofthe boiler. These tubes conveythe products of combustion di-V rectly from the fire-box to the smoke-box in the ordinary manner. y

The position. of the chamber 7 in the boiler is shown in Fig. 2, from' which it Will be observed that the chamber is almost surrounded by the tubes'12, which are of normal len'gtli-that is, they extend the full distanceJ from the fire-box` tube-sheet to the front Referring to Fig. 3, 14 is 'a cylindrical steam-tight chamber which forms the superheater and has -at ends 15 16 Land-'is provided l with a number of fire-tubes 17,. exten ing` clear through the chamber and heads 151,16, the .tubespreferably extending beyond the head 15, as shown. The tubes 17 are equal in number tothe number of short tubes 10 and are spaced the samedistance apart, tube for tube., but of a slightly-greater diameter, so that when the superheater 14 is placed Within the vchan'iber 7, as ,shown in-Fig. 5, the

tubes 17 ofthe superhe'ater 'will register with andvftelescope over the openings of the tubesy lOin the head 9, thereby causing each tubein 'the superheater, together. with each -respective'tube ofthe boiler, to constitute a continuoils and unobstructed assage for the gases of. combustion from tlie fire-box 2 to the smoke-box 3. y I

As will be observed in.Fig. 5, I preferably make thadiameterof-the tubes 12 in the su.

10, so that the projecting ends of the tubes 12 'overlap the vy'rlfolvecting ends'- of, the

perheater somewhat larger than the Atubes l -IIO .lss in. the nire,

i 4o superheated and dry state,4

l e1' of the tubes andan through each and all 4tubes 10 in the-'manner of a telescope, thus insuring a perfect regist uninterrupted -passage of them.v y

In 'the preferred forni of my superheater I 5 provide a chamber 18, into which the steam passes as it enters by the opening 19,A to which is connected the end of the dry pipe 5, as

shown in Fig. 5. ro by the partition 20, which extends across the front end of the superheater, as best shown in Fig. 9.

21 is a vertical partition extending from the side wall of the superheater to the partii tion 20. rl.`his side Wall is provided with openings 22 through which thetubes 17 can pass, and the tubes are made steam-tight in the openings.

23 is an opening made in the partition 21, zo and 24 is a lpipe which preferably, and as shown, is rovided with a double wall having a s ace etween thewalls which extends bac from the vpartition 21, as shown in Figs. 3 and 8. This pipe terminates a short distance from the rear Wall and serves .to conduct .the-steam as it enters the superheat'er from the boiler back to the rear of the superheater.

25 25 are the openings by which the steam 3c leavesthe superheater, these openings being located outside the chamber 18. Conse quently the steam entering the superheater by the opening 19 has to pass through the pipe 24, where it is heated by the tubes withand then back outside the pipe andI among the tubes voutside the' pipe, till, finally, when it reaches the openings 25, to which the pipes 26 are connected and which lead to the cylinders, the steam is in a highly- L referably make the Wialls bf the pipe 24 dou le, as shown, in orderl that the steam in the pipe may not affect the steam'which surrounds the pipe, as the latter has been raised to a much-higher temperature.

While I prefer to cause the steam to circulate among the tire-tubes by the means just described, it is evident that such means are not essential to the superheating of the. 5o steam, and they may, if desired, be entirely omitted, or thebaiiie-plates 27 27 28 (shown in the modification illustrated in Fig. 7) may be used.- Referring to this latter igure, it will. be seen that byarranging the plates as there shoWn-that is, with the plates 2.7 27

extending from the front Wall 16 toward the rear Wall and the plate 28 extending from'the rear Wall toward the front Wall and 'located The chamber 18 is formed ,f

, pei` is lto close up the ends 4of the su the tubes 10 to give up a suiiicient amount of heat to the Water in the boiler as will reduce to reach the superheater at a suilicient temperature to obtain the desired degree of' superheat.

In Fig. 5 I show the usualsmoke-box diaphragm 29. Behind this diaphragm I preferably mount a damper-30, which is hinged at 31 and operatedy by means of any suitable mechanism in control of the engineer or automatically closed Whenthe throttlewalve is closed. and automatically' opened when the throttle is opened. The object of this darn-v erheately tubes or to partially close them, t ereby reducing or entirely stopping the ilow of'hot gases through the superheater fire-tubes.` 'This is desirable when the throttle-valve is closed, and consequently no steam is passing through thesperheater.

It will be noticed that in the form of my invention shown the forward, end ofthe superhe'ater extends beyond the front of thev boiler in order to facilitate Ithefcoupling of" the intake and outlet pipes for the steam. It will be seen that this entire arrangement is of an extremely simple and practical character, the fire-tubes are entirely free from any obstruction, and the smoke-box is no more obstructed than the ordinaryboiler Without a superheater. It 4will also be observed that the space between the shell of the superheater and the ,wall of the chamber 7 acts as an effective-jacket to'maintai'n the high tem-` peratureof the steam passing: through the superheater. f

While I have shown and described Vwhat lI IOO believe to be the preferred form of niyinvention, I desire to changes may be made in the form, construc.A tion', and arrangement of parts'without de,- 'partingfrom the spirit of my invention.

Having thus described my invention, what- I claim, and-desire to secure by Letters Patent, is-

have it understood that many 1 The combination-Within. boiler providedv with fire-tubes, of a superheater;provided with fire-tubes, the superheater being inclosed Within the boiler and'surrounded by the boiler-tubes.

2. The combination with a tubular boiler provided With a chamber surrounded by the tubes of the boiler, a su erheater separate from the boiler and provired with {ir-tubes,

between the' plates 27- -the steam is caused i oo to traverse the path indicated by the "arrows i and come into intimate contact with the tubes. Y

The ,distance from the fire-box tube-sheet 11 to the'headQ is' suicient to permit the 65 hot gases from the irebox passing through 1 the vtubes of the superheater registering with corresponding tubes of the b oiler.

3. The combination with a tubular boiler i having a chamber formed in one end thereof,

a superheater provided with fire-tubeslocated in the chamber, the `tnbes of the superheater registeringr with corresponding tubes of the boilci.. .1

. with its radiating-surface. l

4. A tire-tube boiler in combination with l .a tubular superheater independently sepag rable from the boiler, the superheater inclosed within the tubular boiler, the tubes of the superheater registering with corresponding tubes of the boiler. o

5. A rire-tube, boiler in combination with a tubular superheater independentl)v separable from the boiler, the superlieater inclosed within the tubular boiler,- the tubes of the superheater registering with correspondingg tubes of the boiler, means to de'lect Athe steam entering the superheater in conttct 6. A re-tube"boiler in combination with a tubular superheater independently separable from the boiler, the superheater being.`

contained within the boiler, the tbes of the end ofthe boiler, the inner end of said chamsaid tire-tubes.

superheater registering with corresponding tubes ofthe boiler.

. 71'A A boiler in combination with a tubular superheater independently separabley from the boiler, the superheater being contained within the boiler, and means to deflect the@ steam entering the superheater in contact with its radiating-surface.

. 8. A tubular boiler provided with abcylin- `drical chamber extending inward from one ber terminating in a tube-head, said chamber being connected with the {ire-box by tiretubes extending from the lirebox to the head having a chamber extending invardly from of said chamber, in combination with a superheater consisting of another chamber located within the aforesaid Vchamber and rovided with rire-tubes vwhich register with t e afore- 9. The combination with a--tubular boiler having a chamber extending inwardly from the head of the boiler, of a superheater consisting of a chamber having a plurality of fire-tubes, the superheater being contained within the chamber in the boiler, the firetubes of the superheater re istering with the bire-tubes of the boiler whic enter the cham-l 1.0. The combination wit-ha tubular boiler having a chamber extending inwardly Jfrom the head of the boiler, of a superheater con sisting of a chamber having a plurality of fire-tubes, the superheater 'being contained within the chamber in the'boiler, the riretubes of the superheater registering with the tire-tubes of the/boiler which enter the within the chamber in the boiler, the firel heater.

tubes of the superheater registering with the {ire-tubes of the boiler, the superlieater extending beyond the tube-head of' the boiler wit-l1 the steam'inlet and outlet connections located on the ex tendingportion of the super- 12. The combination with a tubular boiler having a chamber extending inwardly from the head of. the boiler, of a 'superheater consisting of a chamber having a plurality of fire-tubes, the superheater being contained within the chamber in the boiler, a central which the steam is conducted and outside of which the steam returns in the`op osite direotion tothe outlet from the super eater.

13. The combination with a tubular boiler havinga chamber extending inwardly from the head of the boiler, of a superheater consisting of a chamber havinga plurality of fire-tubes, the superheater being contained within the chamber in the boiler, a central longitudinal passage within the superheater embracing a portion of its {iretubes through which the steam is conducted and outside of which the steam returns in the opposite direction to the outlet from the superheater,

lsaid-'central passage having a wallfof double thickness with insulating-space between the walls'. l

14. The combination witha tubular boiler longitudinal passage within the superheater embracing a portion of its tire-tubes through.

per to cover and uncover the outer end of the superheater-tubes. 1 15. The combination with a tubular boiler, having a chamber extending inwardly from the` head of the boiler, of avsuperheater con-l sistingoi a chamber having a plurality of tire-tubes, the superheater being contained within the chamber inthe boiler, and means within the superheater to circulate the steam completely in contact with the fire-tubes of the superheater. I Y

16. f A tubular boiler of the fire-tube ty e in .combination with a superheater of t e same variety, the generator being so constructed as to embrace within itself the superheater, the tubes of both registering and the two being independently se arable.

17. A tubular boiler of' the hre-tube ty e ,l in' combination with a super-heater of t e same variety, the generator being so constructed as to embrace wlthm itself the superheater, the tubes of both registering and the two being independently separable, a

portion of the generator-chamber being interposed between the tire-box and the superheater. o

18. A tubular lboiler of the fire-tube type vin` combination with a superheater of t IIO - the two being Aindependently separablek4 aA terposed between the fire-box and the superheater, and means to deflect the steam entere lsarne'variety, the generator being so constructed vas toeinbrace Within itself the su-' perheater, the tubes of both registering and ,portion of the Vgenerator-chainber being in# 'fing the superheater in contact with its radi-4 ating-surface.

' structed as to embrace Within itself te suf perheater, the tubes of both registering and 19.' yt-tubular boiler ofthe lstraight--tribe' type in combination with a superheater of the same variety, the generator being so conthe two being separable, a portion of the gene` erator-chaniber being interposed betweenl the fire-box and the superheater, and means'- to deflect the steam entering the superheater in Contact; with itsradi'ating-surface, the su perheatei` extending`sufficiently beyond the generator to allow l.for the intakev and outputv steamonneetions'. c

20. The combination With a tubular boiler having a ohambereXtending inwardly from the head of tlieb'oiler, of a superheateil consistingof a' chamber having a plurality of fire-tubes, the superheater being contained Within thechalnber in the boiler, the fire tubes of the superheater registering with the i iireetubes of the boiler which enter the chamber; a head for said superheater secured operate with' the structure ofthe super# to receivethelsteam and the `other Chamber outlet-ports through which to discharge the same. v w

21. In a steam-boiler, the combination f a steam-chamber, a series Aof superheating-4 v'tubes'passing' through said' steam-chamber and fire-tubes arranged on both sides of said steam-ehimnber,l substantially as described.

Signedjyby meat NewYork city, county" Hand State"0f'NeW`York, this 17th day `of\ thereto 'and extendingbeyon'd the generator,-

said head being formed in one piece and in, itself forming two chambersadapted to co-r heater, the one chamber having an inlet-port,

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