US1032697A - Baffle for water-tube boilers and method of constructing same. - Google Patents

Description

F. 0. PAHMEYER. BAFPLE FOR WATER TUBE BOILERS AND METHOD OF UONSTRUGTING SAME.

APPLICATION FILED FEB. 3,1912.

TEL $532,692.

2 SHEETSSHEET l.

F. 0. PAHMBYER. RAFFLE FOR WATER TUBE BOILERS AND METHOD OF GONSTRUGTING SAME.

APPLICATION FILED FEB. 3, 1912.

2 SHEETS-S HEBT 2.

Patented July 16, 1912.

PA'rEN' .oFrro FREDERICK o. PAHMEYER, or se LOUIS, mr'ssoum, ASSIGNOR T HEINE. SAFETY BOILER..COMPA.NY, or sun LOUIS, MISSOURI, A CORPORATION or ivrrsso'um.

' BAFFLE rota WATER-TUBE BOILERS AND 'METHOD OF oonsrnuormo SAME.

To all'whom it may some, n:

Be. it knownthat I, FRriDERrcK O. PAH- aIEyER, a citizen of the UnitedSta-tes, residingat St. Louis, Missouri, have invented a certaim newand vuseful Improvement in Bafiies for ater-Tube Boilers and Methods of Gtmst'ructing Same, of which the following is'a full,clear, and exact description,

such as will'enable others skilled, in the art to which it appertains to make and use the i This invention relates to water tube boilers, and particularly. to water tubeboilers of the type in which a horizontallydisposed battle is arranged approximately midway between the top and bottoinbatlies of the boiler soas to cause the gases to travel longitudinally of'the tubes.

I Prior to my invention it was the general practice to form the middle battle of a water tube'boiler of "battle tiles or members that were introduced through hollowstay tubes in the water legs of the boiler and then slid longitudinally of the tubes into final posit'ionf It-is not practicable to use large stay tubes'ortubes of relatively great diameter .--inthe water legs of the boiler owing to thec'onstruction of the water legs and to the factthat the large stay tubes take up too "much ofthe water-circulating space in' the water leg, and therefore the bafiie tiles which [haven-heretofore been used were compara- 'tively small and of such design that they could be introduced through the hollow stay tubes. Consequently, a great deal of time was consumed in forming the middle battle of the boiler on account of the large number of comparatively small tiles that'had to be used. Furthermore, two horizontal rows of tubes were. required to carry each middle baflle' because the battle tiles had to, be arranged in a zig-zag manner between the upgases on the under could not be adjusted quickly and easily on account of the great number of tiles and the way they were supported on the tubes, nor

could the soot be removed easily from the faces ot said bafl'le owing to the, irregularity Specification of Letters Patent. Patented July 16., 1912;

of said faces, the fact that the baflie'could 1 not be adjusted easily being quite an objectionable feature because the'most efficient position or location of the middle battle can only be determined by experiment afterthe boiler has been in operation for some time,

One object of my invention is to provide.

a water tube boiler in which the middle baf- He can be installed quickly and easily, thus reducing the cost of erecting the boiler.

-Another object is to provide a water tube boiler in which the middle'baffle can be altered easily while the boiler is in operation,

the bafile being formed from members that have a relatively small contact on the tubes,

boiler whose middle baiiie carried entirely by one of the horizontal rows of tubes, and

which is so designed that the major portion of the surfaces of the tubeswhich carry the battle are exposed to the gases on the under side of the bathe.

Another object is to provide a bathe member of novel construction that can be installed or removed easily, that can be altered in position and extent so as to conform to the 'best operating conditions, and which can be used to form either the top, middle or bottom battle of a water tube boiler. And still-another objectis to provide a novel method of constructing the middle battle of awater'tube boiler.

1 Figure 1 a vertical longitudinal sectional view of a boiler constructed in accordance with my invention; Fig. 2 is a transverse sectional view taken on approxitional taken through-the tubes illustrating the second step in the method of arand whose top surfaces-are of such design .that when assembled they will form a mately the line 2-'2 of Fig. 1; Fig. 3 is an- 'enlarged transverse sectional view taken.

ranging the bafile members in operative poin the method of arranging the bathe mem- A designates the tubesopposite ends are supported by water legs.

sition; and Fig.5 is a 'perspec tiveview of B, and C designates the lower baflle which extends over' the combustion chamber. A

horizontally disposed baflie D, which I will' hereinafterrefer to as the middle battle, is arranged v approximately midway between the lowerbaftle C and the upper baffleE so as. to cause the gases to travel longitudi nally of the tubes, as indicatcdby the arrows infFigs 1. Said middle baffie D is formed" rom'a number oflbatlle membersl which are arranged in a horizontal position upon one horizontal row, of tubes, as

shown in Fig. 3'. The battle members 1 that I prefer to use-are formed from cast metal,

and consist of a substantially flat plate provided on its under side with a plurality of transversely extending r1bs 2 whose ends are curved slightly at 3, as indicated 111 Fig. 5,

so that they will conform to the shape of the tubes A on whiclrthey rest. If desired, a longitudinally extending rib i may be formed onlthe underside of the member 1 so as to strengthen sald member and 1nterrupt the transverse ribs"? so that-said transverse ribs cannot hook onto the tubes whenever the bafiie members are being removed, as hereinafter described, the opposite ends of said strengthening rib at being preferably inclined or tapered. Openings 5 are formed in the transverse ribs 2 on one side of the longitudinal rib 4., and noncircular-shaped openings 6 are formed in said ribs 2 on the opposite. side of said longitudinal-rib'so as. to facilitate the arrangement of the battle members 1 in operative position.

The balile members 1 are not introduced through hollow stay tubes in the water legs of the boiler, as has heretofore been the general practice, but said baflie members are slid downwardly between the tubes into approximate position, as shown in Fig. 3, and are thereafter turned into a horizontal positionand placed upon the tubes by means 6f a bar or other suitable .tool which the operator inserts through ahollow stay tube F in the water leg-B of the boiler, both water legs being provided with several hollow stay tubes, as shown in Fig. l, which are arranged. a slight distance abovekthe horizontal row of tubes that carry the middle baflie, and the hollow stay tubes in the rear water leg 13 being arranged in staggered relation to'the hollow'st ay tubes in the front water leg. The space or flue G above the tubes A of the boiler is large enough to enable a workman to enter same. Consequently, the baille members 1 can be as do.

inserts" a string or other suitable flexible device as through the openings 5 in the transverse ribs 2 on the under side of a 'bafile member and then allows said balfie' member to slide downwardly between the tubes until i't'is approximately opposite one of the hollow stay of the boiler at the end .of the'boiler at which the workman is*located, as shown in -brokenlines in Fig. 3, Another workman, then introduces a barg/ or other suitable tool providedwith a ,nomircular-shaped end through the hollow stay tube and in serts' theend of'said tool in the non-c-ircw larshaped opening 6 in one of the trans- ,member, as illustrated in Fig.4. There'- after, said workman rot-ates thetool y so as to turnthe. baflie member into a llOIlZOIltfLl vice and tool are withdrawn and another baflle member is slid downwardly and. there after turned into a horizontal position and placed upon the tubes, these operations being repeated until the required numberof battle members have been arranged in position to form'a middle baflie of the desired dimensions. If desired, the flexible member'may be tied to said member and left attached thereto because as soon as the boiler is fired said flexible device will be burned up'. The baflle members are pref erably introduced at" a point adjacent one of the water legs of the boiler "and are then slid longitudinally on the tubes into final position.

Thebattle D of the constructionabove described can be installed quickly and easily on account of the comparatively few mem-' bers that are required to form the battle; and another desirable feature of such a bafi e is that it increases the efiiciency of the boiler owing to the fact that only one horizontal frow of tubes are required to 'carry the baltle, and the bafiie members are so designed that all except a small portion of each-tube; is-exposed to the gases on the under side of the baffle; A -middle bafilef cost, but it can alsobe removed easily'be-l cause the members from whichlt-' s'formed troduce the tool y through the hollow stay tubes, grasp the handle members and lift them from the tubes and then turn them so that they will slide downwardly into the space beneaththecboiler. The top baflie E. bf'the furnace may alsobe formed from bafiie members 1 of the construction abovetubes F in the water leg wardlythrough the tubes, as indlcated 1n Fig. 3. In arranging the battle members 1 in position the Workman first verse ribs 2 on the under side of .the baffie I I position, thus, causing it to rest squarely 1 upon two of the tubes A. The flexible dedevice in thatis used to position the baflle D of the-construction abovedescribed can "not only be installed quickly and at a low 1-20 are so designed that the workman can intubes of the boiler, and means on said bafile' described, and if said baffle members were made of refraetorymaterial it would alsobe practicable to use them toform the bot tom bafile C ofv the boiler. Therefore, while my improved bafiie member is of greatest value in formin the middle baflle'ef a water tube boiler 1t can also be used to form] the top or bottom baflle. of such a boiler.

Having thus described my invention, what I claim. as new anddesire to secure by Letters Patent is:

1. A Water plurality of horizontal'rows of tubes, baffle members arranged in a horizontal position at one end of said horlzontal rows of tubes so as to form a baflle, and means on said baflle members for cooperating with. devicesthatare used during the operation of arranging the baflle members in operative position. i

2. A water tube boiler provided with horizontal rows of tubes, a baflle carried by one of said horizontal rows of tubes and consisting of a plurality of members, each of which spans the space between two of the tubes of said row, means on said baflle member for cooperatingwith a device that is used to lower the baille members between the ends, transversely extending ribs on the under sides of said bafile members which" lie between the tubes of the row of tubes on which said members are mounted, and open tube boiler provided with a ings in said transverseribs on opposite Sides of said longitudinal ribs substantially as and for the purpose described.

4. A method of constructing the middle horizontal b afile of a Water tube boiler which consists in sliding battle members downwardly through'therows'of tubes'into' approximate position, andthereafter turning the battle members into substantially a horiz o'ntalposition and tubes which carry-them.

which the tubes are arranged in stag ered relation, which consists in slidin aflle members downwardly between the tu s into approximate position, and thereafter introplacing them upon the 5., A method of; constructing" the) middle horizontal battle of a water-'tubeboilerin ducing -'a tool through an opening in one of the water legs of the-boiler so as to. engage said ba-file members, and turn them from a substantially vertical into a horizontal position and place them upon the horizontal row of tubes that carries the middle baflieh 6. A method of constructing the middle horizontal battle of a water tube boiler which consists in suspending. baffle members from flexible devices and lowering them down between the tubes of a boiler into approxi mate position, introducing a tool through an opemng in the water leg of the boiler so as to engage the bafiie members, and finalili-y turning saidtool so as to arrange the ba e members in an approximately horizontal position and placethem upon the row of tubes that carries the'balile. p I

In testimony whereof I hereunto afiix my signature in :the presence of two witnesses, this thirtieth day of January 1912.

FREDERICKOLPAHMEYEB.

Witnesses GEORGE R. LAosoN, GEORGE BAKEWELL.

Images