US1034079A - Steam-generator. - Google Patents

Description

' A. A. GARY.

I STEAM GENERATOR.

APPLICATION FILED MAR. 6, 1907.

Patented. July 30, 1912.

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Patented July 30, 1912.

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PATENT curios.

ALBERT A. CARY, OF NEW YORK, N. Y.

STEAM-GENERATOR.

Specification of Letters Harem.

Patented July 3 0, 1912.

Application filcd March 6, 1907. Serial No. 360,946.

State of Ne\v;York, have invented certain new and useful Impovements in Steam- Generators, of which the following 13 a specification.

My invent1on relates to steam generators lo and more especially to that class of generators having boilers ol'athe water tube type.

()ne object of my invention to provide an improved form of throttling brick for such b()ile'1-s -wl1icli' will more effectively break u all dead s )aces in the boiler and cause a more etlicient consumption of heat than in prior boilers. 4 I I it further ob ect of my invention lSdO so arrange these brick that the products 0t cci'nbnstion are ra tlsed to travel/in a more etticient manner tliit g 'lgh the boiler.

A further ob ect of my invent on rsito pro-\ ide a throttling brick of such shape and.

dimensions that it 'may be readily movcd transversely with respect to the tubes of the boiler and easily put in place.

A further object is ttr provide .brick which will fit.- in place between the tubes of a single row so as not to fill up the space between 3'0 two or more rows of tubes and act as an obnoxious obstruction when it is desired. to clran the tubes of the boiler] 'Further objects, features and advantages will more clearly appear from the detail (lescription. given below taken in connection bodying' one form of my invention.

-15 shown in Fig. 3.

I torua a part of this s no ,2 comprises a combustion chamber hand a boiler 2, \vilh slcatu and water drums 5), 4. Front. walls 5. rear walls ti, and side walls 7. Form a chamber to inclose the parts. combustion hamb r l is provided with [htusual grates 8. and asl'uiit it. together with doors l0 and ii; for the fuel and ashes, re-

spectively. A. brick wall 12 forms the rear of the tire; chambers andis' designated as the bridge wall. Doors 13, 14 15 and' lG are pro-videdl'fcr obtaining access to the parts inclosed between the walls 5,6 and 7:

flue opening 17 permits the products orcombustion to escape.

.The boiler, as illustrated upon the drawings, consists of a plurality of water tubes 18, the front end of the boiler being sup ported over the comlmstion chamber and the tubes inclining from front to rear. The tubes end in the usual headers 19, 20, which in turn con'mumicate by means of pipes 21 and 22 with a pairof steam and water drums 3 and 4*.- The steam-and water drums 3, 4 are supported from cross bea1ns23 by means of hangers 25 and straps 26, corinected to bridge pieces 24c. Steam is drawn from the boiler by means of pipe 28; while the safety valve is attached to the nipples 27': a connecting pipe 29 may be used to connect the nipples 27. Access to-the front fot'the boiler is provided, as usual, through the tube door b0. A niud drum 31is connected to the header 20. llatlling members or partitions or flame plates 301 and 302, a hanging bridge wall 803 and a mud drum wall 304 may be provided for dividing, the boiler into a plurality of sections or divisions so as to compel the products of com bust-ion to pass through the divisions of the boiler. from the furnace to the flue outlet.

In the ci'nbodin'lcnt of my invention illustrated in the drawings, by assembling my refractory l'n' icks, I provide a ballling means 32 extending along one of the lower rows of tubes partway over the combustion chamber and so construct and arrange this balllingz; means with relation to the water tubes 18 on which the balllingr means rests that a smaller part of the products of combustion travel transversely between the battling means and the tubes and the greater part passes around the end of the bathing means on their way to the boilcrs heatingsurface. liy this means dead spaces aiming the boiler tubes above the ballliugr means are prevented. and instead of forming more or less quit-scent pockets of gas including, air above the batlliu means. this spaccis constantly supplied wd -ll--lrcsh hot gases From the com- 'b|istioii hatuber. i also. by assembling in? refractory bricksiu tilts casc illustrated. provide the boiler with a balliing means 3 liurthcr removed from the combustion cluilllllt) e sive.) The body 36 of the brick is adapted.

her, and arranged between the combustion chamber and flue' outlet, which bafliing "means extends from the flame plate 301 along one of the upper rows of tubes toward way to the rear-of the. boiler. By these means the tubes lying'beneath this upper battling means have a constant circulation of hot gases passing over their heat absorbmg surface. By this arrangement of upper.

. and-"lower bafiling lneans the path of a very "large, percentage ofproductsof combustion passing fr'om't-he combustion chamber to the stack through the boiler, is lengthened,

and the velocity of flow of these products b of combustion is materially increased, thus v causing a much greater circulation so that more heat is absorbed by the conducting 'surfaces.

- The battling means 32, for the combustion chamber, and the balliing means 33, for the upper'bank of tubes, are, in the best embodiment of the invention, composed of refractory brick 35. (See Figs. 3 to 6 inc-luto extend lengthwise of the tube and'isproproject from the body. The bodyis thus.

.- rest.

vided with surface projections 37 which maintained out of contact with the tubes on which the surface projections areiadapted to As shown, the projections project from opposite sides of the'body of the brick and may becurved as at 38, in order to fit upon the boiler tubes. These projections I make integral with the body of the brick,

- 'and theyare supportedupon the two coiltiguous tubes at a position located above the plane determined by the axes of the tubes on which the brick rests, to prevent crushing whenfexpansion occurs.

The brick when in place rests between the tubes that'support it, that is, it lies substantially below the top surfaces of the tubes on which it rests so thatit lies within the space bounded by the row of tubes on which it rests or, in other words, does not extend materially above the upper level of the tubes on which it rests. This is'important since if 'tho brick extended materially above the tubes'on which it rests it would prevent satisfactory cleaning of the boiler.

Thus when a steamnozzle orpipe is in-- .se-rtcd transversely of the tubes to blow off dirt and soot, it would strike the tops of the bricks and, in many cases, cause breakage thereof. Moreover the steam coming from the nozzle with considerable force would strike the top of the brick and be liable to dislodge it'. By placing the bricks.

-I so make the brick that its heightis less than the distance'A B between the tubes, and I prefer to make the top of the brick with a concave face 4Q. -I also provide the brick with means to which a tool 41 may be connected, so that the brick may be inserted transversely of the, tubes and located at any place among the boiler tubes and removed y passing it through the vertical or inclined spaces found between the tubes. As shown, the brick is perforated at 42 in order to engagewith the peg carried near the end of the tool.- The brick will readily turn on the peg when necessary in order to fit the brick into place on the supporting boiler. tubes. Although I have illustrated the brick as forming part of the battling means arranged between the combustion chamber and the flue outlet of the boiler, it will be understood that one or more bricks may be located at different parts of the boiler in order to avoid dead spaces and in order to deflect the greater portion of the hot' gases] into contact with any part of the heating surfaces. y I

From the above it -will be apparent that I have provided an exceptionally efficient, simple and economical arrangement whereby the efiiciency of the boiler is very much increased. By providing baliiing .means 32 and 33 as shown the path of the-flow of part of gases is lengthened and the velocity of the flow of gases is increased. thereby causing a greater absorption of heat by the water tubes. By providing andarranging the refractory, brick so that part of the products of combustion may pass. between the brick and tubes, all dead spaces are efficiently removed and the gases are kept moving over all portions of the tubesso that the heating is much more effective and evenly distributed. By forming the baffling means of brick so constructedthat they are spaced from the sides of the tubes on which they rest, the moving gases are forced against the sides of these tubes in a most effective manner, so that the tubes are thoroughly scrubbed with these gases and a greater absorption of heat is obtained. These brick also cause a flow of products of combustion upward between the tubes at these points to morce'lfeetivelv bathe the tubes above and below the battling means.

By so constructing the brick that it may lie structing the brick that it may pass in among the tubes transversely thereof, the

brick may be inserted from. the sides of the boiler and deposited upon any row of tubes very simply and easily, 'thusobviating the necessity of removing the brick endwise along the boller'tubes. By arrangingthe' brick with the concave surfaces 39, gases are forced in a direction toward the adjacent boiler tubes to' more forcefully impinge upon the same, and the concave surfaces 39 and 40 more readily allow the brick to be handled among the tubes.

Various other features and advantages will be clearly apparent from the above'description to those skilled in the art.

Itwill also be clearly apparent that various of my improvements may be advantageously applied to various kinds of boilers, including those in which the tubes are both vertical and horizontal. aswell as inclined.

Although I have described my improvements in great detail nevertheless 'I do not. desire to be limited to the various details shown and described except as spt-iciticahy claimed.

However,; having fully and clearly de scribed my invention, what I claim and dcsireito secure by Letters Patent is:

1. The combination of a suitable chamber, a plurality of rows of boiler tubes arranged in said chamber, a bathing member extending transversely of the tubes and dividing said chamber into .sections, battling means extending from one end of said chamber part way along said tubes, and a second bafiiing means extending from said battling member 'part way along said tubes, said battling means being arranged so that part. of the products of combustion will pass be tween each bathing means and its adjacent tubes and part will pass around the ends of both of said bailiing means.

I 2. The combination of a plurality of'rows of boiler tubes arranged in a suitable chamber, a bathing member extending trans verscly otthe tubes and dividing said chamher into sections. batlling mcans extending from one end of said chamber part way along one of the rows of tubes, and a second bafliing means extending from said member part way along another of said rows' of tubes, both of said ballhng means embracing refractory brick supported by and =bctwccn the adjacent tubes of its respective row and the body portion of the brick being spaccd from the tubes on which they are supported and both of said bafliing mcans being arranged so that part of the products of combustion' will pass between said bricks and the tubes ()Il WlllC-ll they are supported and part will pass around the ends of said battling means.

. 3. The combination of a plurality of rows of boiler tubes arranged in a suitable chamber, a battling, member extending transversely of the tubes and dividing said chamber into sections, a combustion chamber below one end of said tubes, bafiiing meansl extending part way along one of the rows'of the tubes from one end of the same and over and adjacent said combustion chamber, and I bafiiing means extending from said bafiiing member part Way along one of the upper rows of tubes, eachof said battling means embracing refractory bricks supported by adjacent tubes, the body portion of the bricks being spaced from the tubes on which they are supported, whereby par of the 5 products of combustion pass upwardly be' tween the bricks and the tubes on which they aresuppcrted and part pass around the ends of said balliing means.

4-.-The con'ibination of a fire chamber, a,

plurality-of rows of water tubes suitably arranged with respect thereto, a baillingmcans arranged along'one of said rows of tubes, said means consisting of refractory bricks extending part way along saidrow of tubes and lying substantially within the sj'iace bounded by said row of tubes, said bricks having a dimension less than the distance between the tubes on which they rest sothat the bricks may be readily moved about transversely among the tubes and the body portion of said bricks being spaced from the tubes of said row by projcctions integral with said bricks so that part ofthe products of ccmbustion will pass between the bricks and the tubes of said row to niorc effectively bathe the tubes.

' 5. The combination of a plurality of rows of boiler tubes arranged in a suitable chainber, a battling member extending trans versely of the tubes and dividing said chain'- ber into sections, a combustion chamber below one end of said tubes, bathing means extending part way along one of the rows of the tubes from one end of the same and over and' adjacent-saidcombustion chamber, and baffling means extending from said batlling member part way along one of the upper rows of .tubcs,-cach of said ballliug mcans en'ibracing refractory bricks supported by 1 and lying substantially within the space bounded by its rcspcctivc row of tubes having their body portions spaced tlu-rci'rom by projections whcrcby part of the products of combustion pass upwardly bctwccn bricks and the tubes on which they arc supported and' part pass around the cndsot' said batlling means. I

t). The combination of a plurality of rows of boiler tubcs arranged in a suitable cbam- 130 the a 7 tubes and the body versely of the tubes and dividing said supported and baffling means battling means, csion less than the distance between the tubes on which they rest so that they may be readily moved about transversely among the her, a' baffling member extending trans.

versely of the tubes and dividing said cham jber intosections, a combustion chamber below' one end of said tubes, baflilng means extending part way along one of the rows bafiiing member part way along one, of the upper rows of tubes, each of said bathing means embraclngrefractory bricks support? ed by, and lying substantially within the. v. space bounded by its respective row \of tubes, the body portions'of the bricks being l5 spaced therefrom by projections integral with the brick, whereby part of the products-of combustion pass upwardly between the bricks and the tubes on which they are part pass around the ends of 'saidbafliingmeans, said bricks having a dimension less than the distance between'the tubes so that they may be'readily- ,moved about transversely among the tubes.

7 The combination of a combustion chamber, a plurality of rows of water tubes suitably arranged with. respect thereto, 21 arranged along one of said rows of tubes, said means consisting of retract-cry bricks extending part way along said row of tubes and lying substantially within thespace bounded by said row of portions of 'the bricks being spaced from the tubes of said row by projections integral with said bricks so that part of the products-of combustion will pass between the bricks and the tubes of' said'row' to more effectively bathe the tubes, and part will pass around the end of said said bricks having a dimentubes.

8. The combinat-ion of a plurality ofirows v of boiler tubes arranged in a suitable chamber, a 'bafihng member extendin trans- ,from one end of chambaflling means extending said chamber part way along one of the rows of tubes, and a seo ond baliting means extending from said member partway along another of said rows of tubes," both of said bafliing means embracing refractory brick supported by and between the adjacent tubes of its respective row and having their body portions spaced from ,the tubes on which they are supported and both of said baflling'means being arranged so that part of the of combustion will pass between said bricks ber int-o sections,

and the tubes on which they are supported 3 and part will pass around the ends of said baflilng means, said bricks having a depth less than the distance between the tubes so that they may be readily moved about transversely among the tubes. v

9. The combination of a plurality of rows ofboiler tubes arranged in a suitable chamber, a bafiiing member extending trans-' versely of the tubes and dividing said -chamber into sections, battling means extending from one end of said chamber along one of the rows of tubes, ant. baflling means extending a second from said member partway along another of saidrows of tubes, both of said bafiling means embracing refractory brick supported by and lying substantially within the space bounded by its respective row of tubes, the body portion of the brick being spaced therefrom by project-io'ns integral with the brick and both of said bafl'ling means being arranged so that part of the products of combustion will a pass between said bricks and the tubes on which they are supported and part will pass around the ends of said'bafiiing means,

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

ALBERT A. CARY. Witnesses EDWIN SEGER, JOHN O. GEMPLER.

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