US971522A - Superheater. - Google Patents

Description

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W. F. BUCK & H. W. JACOBS.

SUPERHEATER.

* APPLICATION FILED JUNEZ, 1910.

Patenfed 001;. 4, 1910.

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W. T. BUCK & H. WQJAOOBS.

SUPERHEATBR- APPLICATION FILED JUNE 2, 1910.

Patented Oct. 4, 1910.

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w. 11 BUCK & H. W. JACOBS.

SUPERHBATER.

APPLIOATIONIPILED JUNE 2, 1910.

Patented Oct. 4, 1910.

6 SHEETSSHEET 5.

DGOQQOGG GQGGQOOG W. P. BUCK & H. W. JACOBS.

SUPBRHEATER.

APPLICATION IILED IUNE2,1910.

6 SHEETSSHEET G.'

Patented Oct. 4, 1910 UNITED srrarns PATENT. OFFICE.

WILLIAM F. BUCK; or cnzoaeo. ILLINOIS, m nnnmrw. moons, on 'ror'nxa,

KANSAS.

SUPERHEATER- Specification 01' Letters Patent.

Patented Oct. 4, 1910.

Application flled June 2, 1910. swam. 564,673,

.tion, referencebeing had to the accompanying drawings, which form-a part of our specification.

T he object of our invention is to providea detachable superheater whlch 1s simplein design and construction, the superheater being composed-of two compartments adapted for use on a Malletarticulated locomotive.

A fur-then oblect of our lnvent on is to provide a super-heater of the construction herein described .wherein all the steam pipe connections will'belooated on'the outside of the boiler shell, and in which the shell-f the superheater compartments will form .the intermediate partof the boiler shell. v

Another object of our invention is to .pro-

vide a superheater that. will be held per-- fectly rigid and-in correct alineme nt with the boiler. anda-ls'o'permit ofready access being had to all stea-m pipe connections and allow any leaks to be detected and easily repaired.

Iii'the drawings: Figure 1 is -a partial longitudinal. "vertical sectional view of -the intermediate part-of the boiler-pf an art culated Mallet com-poundlocomotive; alpor ti'ori, to wit, :-t-he cylinders and the conned 'tions to and from the cylinders being shown inside elevation. F ig.' 2 ,is a cross-section lated. Mallet compound locomotive, showing Fig. 4 is a cross" sectional flew. taken'on the .line',C.,- D of Fig. ,3, look-- taken'-on1.the"line of-Fig. 1, looking in the direction of'the-iar'rows 1F ig. .3' is allongitudina-l yertical'sectionalfview of the .1n termediate "part ofthe. boiler tot an articua' modification.

ing in thefdirectlionof thearrows. Fig.- 5 is a longitudinal sectional vie'w of the boiler of; an articulated Mallet. compound locomotive, with the cylinders and'connectio'ns in elevation, showing another modification. Fig. 6 1s a. partial longitudlnal'sectional V1W'Sl10W- ing another modified-form of o'ur invent-ion,

wherein two tube'or'fiue sheets are employed.

- Our invention consists of superheating means for the steam before it enters thepressul'e cyli11ders and-other means for resuperhcatlngthe steam after it leaves-the high pressure cylinders and before it enters the low pressure cylinders; the su erheater comprising two compartments; othcompartments being located Within the intermediate part of-the boiler.

W e have illustrated theinVentiom-whioh is of the smoke-tube type, wherein the smoke tubes pass continuously through both superheating means or compartments-when employing the form shown in Figs. 1, 3 and 5,as more especially adapted to an articulated Mallet compound locomotive.

In the construction shown in Figs. 1, 3 and 5 the superheating meansor-compartments are separated. by an annular flue sheet 1, thus providing-means for superheating the steam for the hi h pressure cylinders and means for resuper eating the steam after it leaves the high pressure cylinders and before it is delivered to the low pressure cylinders. This flue sheet 1 is suitably riyetedor othervisesecured within the outer shell, as clearly illustrated. 3

are the feed ater tubes 7 .Which convey. the gases ;of combustion 'forwardto the smoke,- box of the boiler (not illustrated.) tromv ,which point-they escape through the smokestack; the smoke-box or forward end of the locomotive is not shown as it is of the usual .well known construction. A steam pipe-8 .conveys the steam from-the throttle inithesteam .dome to the first compartment or superheating means 9; this compartmentbeing intermediate of the fine sheet 15 and the; sheet to which the ends of the tubes are Welded adjacent-to chamber l. v

' "The compartmentor super-heating means .{9 is provided with a suitable number, of

bathe-plates 10,extendi ng from side ,to side,

see, Fig. 2; The'bafiie-plates 1.0. are so ar--- I 'rangedas'to compel the steamJto flow in a lateral direction ;from side to sideso asto come into contact with thesdifferent tubes 5' passing through the compartment. It is apparent from the construction shown .in

Fig. 2 that the steam enteringat the top of are the boiler tubes through- .W-hic-h the gases of combustion pass and are the compartment through fpipe 8 is comp'elled to pass downwardly r om one side of the compartment to the other a number of pressure cylinders it is discharged'through- Q thezs'team pipes 12, 12, see Fig. 2,'a-nd conveyedto the second compartment or superheating means 13, 61.; Fig. 1. As the superheater tubes 5 also pass through the compartment-13 it is apparent that the steam -willbe resuperheated. Com )artment 13 is rovided with a series of vertically arranged attic-plates 14, see Fig. 4, which are alterna'tely secured to o posite sides on the interior of the shell, t ius providing'a passage for the, steam first at the upper part-of the compartment and then at t e lower portion thereof, as is clearly shown in Fig. 4. This arrangement. of the battle-plates compels the steam to pass through a" circuitous route and in contact;- with the tubes 5. The steam pipes 1 2. ente'r the compartment 13 from the si es, see Fig. 4, which compels the steam tQ'flQW upward and downward-in co'ntact wit-h the tubesv 5-until it reaches the center portion of the compartment when it will be allowed to flow-through the steam ,pipe 15,,

see Figs. h and 4, and be conveyed to thelow pressure valves and cylinders. After the ste'amhas spe'nt ;its energy in the low pressure'cylinders it is' allowed to escape through I the exhaust stand into thesmoke-box and usual manner;.

pass out through: thesmoke stack the.

="Ihe superheaterj section is ,reniovablyse icuredin place'bythc rings 16 and '19 which i are fastened to the ends of the superheater section and take. against or register with similar rings .17 and 18Lsecured-t9 the shell of the boiler. -'The rings of'the superheater section and those of the shell of the boiler maybe clampedorj'drawn together'by suit able bolts 20. In order to support the superheater section while it is being put iit'place' and also to assist incarrying its weight, we

refer'to' provide'the 'lu's 1Q""and 17; the ug 16' isse cllle'dfii'lo :'e'.r 1ng 166011 the superheater sectionhnd takes onto the lug -17 which is seoureito the rin 17, see-Fig;

: 1. ltisrof course understood t atz'a similar. s'et oflugs are secured-to 'the opposites de of .the-shelh The'ends 'of the aim preferably welded .to'the tube sheets or platesat"the points 21, 21-; while 'the itujbes are rolled into i the intermediate flue. sheet 1 which separate '-='17-';' 'these rings being preferably '--fi t-' v'v ithin-,each other as shown;-ben1 r secured together-"b y bolts 20 as previously; .escribed. I

6 r the two compartments.

-- The coiuhi stion chambers, located be tween the boiler and the high pressure superheater 9 is provided with a manhole 22, and the combustion chamber 6, located between the low pressure superheater lii and the feed water heater is also provided with a manhole at 23. These holes permit a man to enter either combustion chamber to make any necessary repairs. Both combustion chambers 4 and 6 are also provided with cinder hoppers 24 and 25 so as to permit of the removal of cin ders or unconsumed products of combustion that may become lodged in either or both of these chambers. The shell of the superheater, like that of the boiler, may be covered with lagging as at 27, see Fig. 3.- i

In Figs. 3' and 41 We have illustrated our invention adapted to a modified form of locomotive wherein the courses of the steam and hot gases of combustion are practically identical with that. described when referring to the construction illustrated in 'Fig. 1 wherein the superheater means aresho'w'n located in front of the high pressure cylinders. In the construction illustrated in ,Figs. 3 and 4, the superheater is located above the high pressure cylinders. construction the saddle cast-ing,'which supports the superheater and braces the engine frame between the high pressurdcylinders, is divided in a horizontal plane" therebyforming the joint 28; the two sections of the saddle casting being securely fastened together by bolts 29. By formingthe saddle casting in the manner just described, it per- 'mits of the easy removal of the'superheater from the-boiler'and engine frame,'this being accomplishedv by first disconnecting the steampi es, (all of which are to'the. outside I of the spell of thesupcrheater removing thebolts 29 from the oint 28 in the saddle In this casting and the bolts 20 from the connecting 16,17 and 18, 19. I In Fig. 5 we have-shown a further modification, wherein the shell of the superheater is directly connected by rivets or bolts tothe shell of the feed water portion of the boiler, formin the 'la 'ped' seam as at 31. By reasonof tie fact't at the connection or seam located in theforward combustion chamber G'Where a steam-tight jointis notrequired, the connection between the two shellsma be made in the manner shown and descrlbed. The other: end of the super- ".heater section is removably securedto the boiler shell-by the connedting rings 16 and made to The coursetofthesteam and the gases of Tu'Fig. 6 we shoiv another modification of our invention wherein the superheater tubes 5, 5 of the two superheating compartments are made separate, the ends of the tubes 5, 5, being welded to the two tube .or line sheets 21. In this construction the tube sheets 21' are provided with the rings 18 and. 19", which are so formed as to fit into each other, the one ring being provided with a V-shaped projection or face which takes into a correspondmg groove in the opposite ring. The

rings are clamped or drawn together by the bolts 20, thus forming a tight joint. between the two sections ot the superheater. The course of the steam and that of the gases of combustion are similar to that described in speaking of the construction shown in Fig. 1.

In the construction shown in. Fig. (i, the saddle support 30 is placed back of the high pressure cylinder, thus allowing the super; heater to be built directly atove the high pressure cylinder, thereby reducing the space occupied by the combustion chamber t. This construction obviates the necessity for a long combustion chamber wherein the would become cooled, and furthernim'e permits of a more compact construction. lVit-h this'construction the superheater may be readily removed by disconnecting the external steam pipe connections, and it is not nece sary to dlsconnect the oint in the saddle, as would be necessary with the construction shown in Fig. 3.

It is apparent from the construction shown in Fig. 6, that the entire superheating means for both the high pressure cylinder and for the low pressure cylinder may be readilyremoved by remtn'ing the bolts ":0 in the rings 16, 1.7 and 18, if), after disconnecting the external steam pipe connections; or when desired, either one of the superheating means may beeasily removed, by loosening bolts 20 in the connecting rings 18, 19 and also the bolts whereby the rings at the other end of the section are secured together.

It will be noted that all steam pipe joints ,are made to the outside of theshell of the superheater where they can be easily repaired and any leaks readily detected;'

whereas if the steam pipe joints were located in the interior of the shell, it would be necessary to put the locomotive in the round house, allow it to cool and then put what is known as a water test on the holler in order to definitely locate any defective.

steam joints; after repair-bu, the defective oint the water test would again have to be applied in order to determine whether ,itwas properly done.

our invention where the steam pipe joints are all located on the outside of the shell, (which is madeposs ble because the outer casing or.shell of the superhtwiting means comprises a continuation of the .boiler-sl1ell), the .englne would not have to make this tie-- ()n. the other hand, with' f' he outside of the shell where it c ai'jbe done even if the boiler-shell were hot, as

the joints could be'tested by allowing steam to enter the superheater.

W'th the shell or casing ofthe superheater constituting an intermediate section outside of the shell, thus permitting any leaks to be readily detected and adjustments easily made from" the outside. This is quite an important feature and obviates the very serious object-ions heretofore encountered.

\Ve have shown and described our invention as applied to an articulated Mallet compound locomotive, but we do not wish to be understood as limiting ourselves to this particulartype of locomotive; nor do we wish to be understood as broadly claiming the invention of super-heating means.

We have shown and described whatwe believe the preferred manner of applying our invention, but it will be readily understood that alterations may be made in the arrangement and in a number of minor de tails without departing from the spirit: of our invention, and we do not wish to be understood-as limiting ourselves to the exact construct-ions shown and described, but

What we claim asour invention and wish to secure by Letters Patent is 1. A superheater comprising a cylindrical boiler shelhcombustion chambers located at both ends of said section, smoke tubes extending in 'a longitudinal direction in said section and communicating Withcombustion chambers at both ends, in ians whereby said intermediate section is divided into two compartments to form separate 'su perheating; means, and means whereby said intermedi ate section is removably held in place.

3. A superheater of the. class described whose outer casing forms an intermediate.

section of the boiler shell, means located to lay as the work to be done would all be on the outside of said casing whereby the steam is led to and from said superheater, and interlocking rings secured tothe ends of the casing and to adjacent portions ofthe boiler shell whereb the superheater section is removablyfhel in place. I 4. A snperheater of, the class described comprising a cylindrical casing which forms an intermediate section of the boiler shell, retaining rings secured to the ends of said casing and to adjacent portions of the boiler shell whereby the casing is removably held inplace, and means located on the intermediate section and the boiler shell whereby said section is supported on the boiler shell.

5. In a locomotlve, the combination of a boiler, cylinders, and a'superheater, the shell of the su' erheater forming an intermediate section 0 the boiler shell, means intermediate of said sect-ion and the boiler shell Wherebysaid section is secured in place to be readily removed, combustion chambers formed Within the boiler shell and located at opposite ends of said intermediate section, With steam connections between the boiler, superheater and the cylinders, located outside of the shell.

6. In a locomotive, a snperheater of they class described having a casing which forms an intermediate section of the boiler shell, :1

I combustion chamber located at each end of said section, means whereby the casing is divided into two compartments to form separate'siiperheating means, and rings secured to the ends of said section and the adjacent portions of the boiler shell, adapted to register and form a'tight joint.

7. In a 1ocon1otive,'a superheater of the class described provided with an outer casing which forms an intermediate section of the boiler shell, combustion chambers formed at opposite ends of said section, the

superheater being composed of two compartments to form separate superheating means,

and means whereby the compartments are readlly removable.

WILLIAM F. BUCK; HENRY W.'JACOBS.

Witnesses as to IVm. F. Bu'ck:

J J. DILLON, W; C. PEYTON.

Witnesses as to Henry W. Jacobs:

ELSA N. KERNWEIN, FRANK MITCHELL,

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