US1521775A - Clean-out door for boilers - Google Patents

Description

Jan. 6, 1925.

1521,?75 M. LIPTAK CLEAN OUT DOOR" FOR BOILERS Filed Dec. 26, 1919 4 3 SheetsLSheet l JamD 6, .1925. 1,521,775

` M. LIPTAK CLEAN OUT DOOR FOR BOILERS Filed Dec. 26, 1919 5 Sheets-Sheet 2 1,521,775 M. LIPTAK I v CLEAN OUT Doon FOR BOILERS Jan. 6, 1925f 3 Sheets-Sheet 3 Filed Dec. 26, 1919 Patented Jan. 6, 1925.

MICHAEL LIPTAK, OF ST. PAUL, MINNESOTA.

CLEAN-OUT DOOR Fon BOILERS.

Application filed December 26, 1919. Serial No. 347,296.

T all whom. t may concern:

Be it known that I, MICHAEL LIr'rAn, a citizen of the United States, residing at St. Paul, in the county of Ramsey and 6 State of Minnesota, have invented certain new and use-ful Improvements in Clean-Out Doors for Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will 10 enable others skilled in the art to which it appertains to make and use the same.

My invention relates to water tube. boilers and has for its object to improve the construction of so-called soot blowout o-r cleanout doors therefor', as well as the manner of setting or building the said doors in position.

Hitherto, it has been a common practice lto provide these soot blowout doors, each with a plurality of vertically spaced ports, all of which, in a common door, would open into a single vertically extended inwardly Haring channel extended vertically past the sides of the adjacent boiler tubes, so that there was, thereby, inadvertently formed, a channel through which the flames could pass upward without being forced to travel between or aga-inst the tubes. Moreover, vit

l has been the practice to form these inwardly flaring channels that eXtendinward from the cleanou-t ports, by building the same up out of ordinary fire brick,.such as used in building the inner surface of the boiler settings or walls, and, to get the desired angle, it was necessary to use a large number of pieces or fragments of the bricks. The mechanics had to cut these bricks to the approximate desire-d shapes and to secure them in yposition with the iire clay, which has no adequate binding action, and the result was that the workmanship was very frequently poor and that even when the workmanship was of the best, these l fragments of bricks were easily displaced by manipulation of the blowing tube, so that, in time,l the bricks which formed the channel would soon be knocked from position, thereby destroying the outline of the channel, exposing the metal of the door to the flames and causing the bricks to v lodge against the tubes o-r fall to the bottom of the channel and close some of the cleanout ports. Hence, cleanout doors construct- Ved on the old plan have been short lived' and required frequent re-building and repair. Moreover, displacement of the brick, as above stated, would frequently open undesirable air passages' into the boiler.

The above facts vention. vention consists in cleanout ports, to

are overcome by my in- The important fea-ture of the informing the individual wit, thepports that lare aligned with the spacesbetween the horizontal rows of tubes, each for an individual lire brick, tile or block, and in building In the preferred arrangement, I set into the outer face of the boiler wall atroughshaped metal door with ponts that al frame or plate provided ign with the contracted outer portions of the ports in the fire brick blocks. lith the abo-ve arrangement, the

blowing tube, when inserted through the cleanout port can come into contact' with the surface of only one block or tile in which the particular portv is formed, and as such block is interlocked in the wall, there is no possibility of loosening up of any fragments or block ysections vthat can be knocked or forced from position.

The

small portion of the inwardly converging cleanout port is formed by thermetallic door plate so that it pr events the blowing tube from coming into Contact with thethin or edge portion of the fire brick tile.

In this connection it may be` further metal door plate,

stated that, preferably, the port in the both in the horizontal and in vertical .directions is made smaller than the contracted portion of the `flaring port in the fire brick tile, so that the wear and breaking strain will come entirely on the metal plate.

The inventi-on i sv illustrated in the' compa-nying drawings wherein like characters indicate like parts throughout the several views. Referring to the drawings:

Fig. 1 is a transverse vertical section taken through a water tube boiler and its walls, soine parts being broken away;

Fig. 2 is a fragmentary horizontal section taken through the boiler approximately on the line 2 2 of Fig. 1, soine parts being shown in full;

Fig. 3 is a fragmentary view showing a portion of one of t-he furnace walls and portions of the tubes looking from the inside of the furnace and illustrating particu larly the inclination of the tubes and of the cleanout ports Fig. l isa sectional perspective showing a; section of one of the furnace walls and rtscleanout door Fig. 5 is perspective view, partly in section, showing one of the door plates or fraine and one of the fire brick tiles, the latter being in section;

lFig. 6 is a perspective showing' o-ne of tire brick tiles; and Fig. 7 is a perspective showing one of the p'ort'plugs.

Of the parts of the boiler, the numeral 8 indicates thev side walls ofthe boiler,the numeral 9 the boiler tubes, the numeral 10 the boiler header, and the numeral 11 the stea'indruin of. the boiler', alll of .which parts are of. theV usual or any suitable construe'- tion.

. The boiler walls will be vbuilt up of inside fire'y brick and outside coinn'ion brick, preferably in the-usual way. In thecentralportions of` the sides, the boiler wallsl 8 are formed with recesses into which is set and firmly secured channelfshaped door' plates or frames 12, preferably of cast iron, and anchored to the masonry of the walls by anchor rods 13,orotherwise. The said door plates 1-2,V asppreferably designed are formed with beveled sides 12:L connected by a flat intermediate portion 12b, and provided at theirou-ter edges with flanges 12c that are set in'l flush with the outer faces of the walls 8. At their upper and lower ends, the plates or frames 12 are provided with horis zontal head plates 12d. The centrall portion 12 of the door plates 12 are parallel'to the inner surfaces of the walls 8, but are located considerably outward thereof.

The port-equippedl fire brick tiles' lll that arel formed with channels that'substantially lit the inner portions of the door plate 12, but since the lit cannot, in practice be very closely inade, suitable packing, such as asbestos'cen'ient lis: applied inthe jo-ints, as shown in Figs. 2, 4 and 5.. As already stated, the inner surfaces of. these fire brick tiles 14.v will be flush with the inner sur faces" of. the' walls`8, but tosecure the said lire bricks in the wall, they are forn'iedt at their inner corners with deep notchesv 16 into which certain of the inner lire bricks or blocks 8a are projected, as best shown in Figs. 2 and Ll.

The inner portions 12b of the door plates 12 are formed with ports 17 that align with the contracted outer extremities of inwardly diverging ports 18 formed in the lire brick tile 14. As best shown in Figs. 8 and 6, the ports 17 and 18 are inclined so that they correspond to the inclination of the boiler tubes 9 and are so positioned that they are aligned with the spaces between the hori- Zontal rows of tubes. This is important because it perinitsthe soot blowing pipe 19, when inserted through said ports, to be oscillated, as best shown by full and dotted lines in Fig. 2, back and forth in the space between the horizontal rows of tubes thatare just above and below the same. The inward divergence of the ports perinits the inner or projected end of the blowing tube tof be swept back and forth from one end to the other of the tubes, except in respect to those tubes that are on the saine side in which the insertion is made, and by inserting the soot blowing tube, first in one side and then in the other, all surfaces of thc tubes- Inay be cleaned; Where the tubes are long, two or more eleanout doors may be applied on each side.

Vhere two boilers arev set inv one battery, the doors would have to be appliedv only in the' outer wallV of each boiler, but the r'ange of oscillation ofthe soot'blowing tubo will, even in that event, be sufficient to clean the surfaces of the tubes. y

Obviously, the' ports 18 do'not afford vertical channels'for the upward passage of the flames, since the flamesy cannot passV vertically upward from the one port to the other. For normally closing' the' ports, I preferably provide removable port closing plugs 2() that quite closely fit the portsf17 of the door plates 12, and which project inward far enough to cause the said' plugs to remain firmly seated under the action of gravity and against? accidei'ital displacement.k The plugs 20 are preferably formed with flanges 21 that normally stand against the door plates and tightly close ythe l joints between the plugs 2() andports 17.- Outward of the flanges 2.1 the plugs are providedvwith heads 22 adapting thein to be easily handled. Bccause of their reinotene'ssfrorn the flames, these plugs, which are preferably of cast iron, will never become very hot and, of course, the doorL plates12are protected from the heat of the furnace by the fire brick tiles 14., and other bricks of the boiler walls.

Of course, the soot blow-ing tube 19 will be connected to a flexible steam supplying pipe or hose 23, in the usual way and will be provided with the customary regulating valve 2l. y Y y The port-equipped fire brick tiles dcscribed may be readily incorporated in boiler Walls already erected in connection With the door structures now in use.

That I claim is:

A boiler or furnace Wall provided With a cleanout door made up of superimposed fire brick tiles built into said Wall, said tiles having individual inwardly flaring cleanout ports, and an outwardly flaring channel- 10 shaped door plate set into said Wall and having ports aligned with the contracted outer portions of the ports in said tiles, the said tiles having recesses that receive the inner portion of said channel-shaped plate.

In testimony whereof I aiix my signature 15 in presence of two Witnesses.

MICHAEL LIPTAK. `Witnesses BERNICE G. BAUMANN, HARRY D. Krnconn.

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