US1134077A - Water-tube boiler. - Google Patents

Description

11, 1 Mam 7,

Patented Mar. 30, 1915.

I/VVEA/fil? 22B) #434 mm DAVID S. JACQB'US, F JIEIREEY CITY, NEW JERSEY, ASSIGNG'EL T9 THE. "L AB'JUCK r.-

.Qggeliceticn 111cc. somber $61, EH23.

To all whom it may concern:

Be it known that lQDA /rn S. Jziconns, a. citizen of the United States, residing at Jersey City,-in the county'otf Hudson and State of New Jersey, hsveiinvented new and useful improvements in l f Tube Boilers, of which the following is s specification. 1

My invention relates to Water tube boilers object an increase of eiii-' ciency and capacity in installations of large units. This object is acconiplishecl by (3011? bining two units each comprising a. hunk of inclined Water tubes srrsnged syn1rnetrically above a common fuel and combustion chamber, the fuel chamherextending from one side of the boiler to the other to provide a large furnace volume, and the heating surfaces of the units disposed. relative to each other so as to form i i-shaped conr hustion chamber which shell he open the escape of the precincts of combustion, over the tubes of the heating surf-see, eiono the upper portions of the inclineii. sides or the combustion chamber.

The invention will be understood by rei? erence to. the accompanying drawings in which Figure 1 is a longitudinal section; unci Fig. 2, a detail View of the means for protecting the lower ends of the upper headers.

in Fig; 1, l have shown two units eachv comprising 22. hunk of inclined Water tubes, the tubes 1. of the left h m-(l unit being expanded into lower and upper headers 52 and 3, and the tubes 4c of the right hand unit be ing expenclecl into lower anal upper headers 5 and 6. These headers extend. transversely of the boiler from one side Wei} of the set ting to the other sicie Wall. lie-ch hank is divided by transverse heilies 8, the bzzfiles 7 rising from baffles 9 extending the front headers towercl the rear, thus providing it plurality of transverse PLSSBS for the products of combustion across and ELIOUTNi the tubes as inrlice'teci by the arrows. The upper headers 3 ere connected, by substuntielly horizontal separator tubes 10, with a steam and. Water (lrum ii, and latter is connected with headers 2 by clowncomers 12. ihe upper, headers 6 are connected. by substontieily horizontzii separator tuhes L3, with e steam and Water drum 11,4, and the lat er is connectecl with new WATER-TUBE 1 ,jiggkqyfi "3 a Specificetion of Letters Patent.

the lower headers 5 nu. no. urns l l-i,

approved type. 'Iihe 1o. two trunsi rse boxes connected '15 ,J. 7. I! H e eiieeneho, lei-shaped tubes,

of each superheeter is co; 5:; space of the corresponrli The boiler units show, escr over a common furnace e from the front to the rear oi the he. the design shown the furnace is ulong; its center o 2. low Well from one side W311i to other. serves as e rear Welli'or the two instance two chain sections, in ii. gm stolrers 19 and 20 of any spp ovei construe '75 and operated incle e Ji each other, from thefrcnt one one other i d nns rower heed. ere, anal are shown outsicie or the ignition go arches 21 and 22, iiherethe ere protecterl. from the heat of the furnace; The heerlers 8 and 6 extend to the roof of r between them.

The two boiler are so rii poseci relative to each other that the upper headers 3 and 6 converge toward each clown Wardly and their lower ends meet 21 mutely at the transverse plane of the setting. virlerl a inrge fii-shnpeii combustion. c open to the escape of the pro cornl tion along the u; per port inclined sicles, that is, the opts.

vertical There is thus prothe inclined tubes. The gases combustion chamber rhvirie and pa boxes 26 below the wall 18 with the circulation, For such purpose I have shown them connected by pipes 27 and 28 with the lower and upper headers;

The coal is fired at the front and rear of the boiler setting, and with the arrangement described the character of the combustion may be maintained substantially constant from one side of the boiler to the other, .and the loss often experienced through a stream or lane of excess air or unconsumed combustible gases passing through the boiler and escaping to the stacks will be avoided. It is well-known among engineers that-in ordinary boiler furnaces the-re is a reat variation in analyses taken from di erent points in the path of the flue gases leaving the furnace, Whereas with the present furnace arrangement this action is reduced to a minimum,

' as any irregularity from the front to the rear of the grates disappears before the gases pass from the upper part of the combustion chamber, and as the composition of the gases for uniform firing conditions will be uniform from one side of the boiler to the other, it follows that the composition .of the entire volume of the gases leaving the furnace will be substantially uniform.

The angle of inclination of the tubes of v the heating surfaces'is approximately to the horizontalfand the planesof the rear headers approximately at an angle of 90 to each other. I do not, however, restrict" myself to these angles, the essential feature being the disposition of the units relative to each other over a common furnace and com bustion chamber. to provide an A-shaped combustion chamber of relatively large* volume, and the other features herein described, which contribute to an increased efficiency and economy in operation. I

It is necessary in the practical operation of the boiler to protect the lower ends of .the upper headers' from the radiant heat ofthe fire, otherwise these ends Would burn out on account of the accumulation of sedimentinside of them. For this, purpose I have shown a special tile'30 held up by iron rods or bolts 31 passing through holes in *the file, the rods or bolts being attached to a suspension member 32 which rests on cross members '33. The lowermost ends of the rods or bolts are protected by means of fire clay, or other material, which is introduced vided in the tile.

A-shaped combustion chamber between the units, a steam and water drum for each unit,

- ers into which said tubes are expanded, said units being so disposed that the upper headers converge toward each other downwardly and extend upwardly to the roof of the setting, whereby there is formed a centrally disposed A-shaped combustion chamber between the units, a steam and water drum for each unit, substantially horizontal separator tubes connecting the upper ends of the upper headers to the corresponding steam and water drum, downcomers connecting said drums to the lower headers, and walls in .90 front of said downcomers and extending from the steam and water drums to the banks of tubes.

2. In a Water tube boiler, the combination of two units each'comprising abank of inclined water tubes, upper and lower headers into which said tubes are expanded, said units being so disposed that the upper headers converge toward each other downwardly,

whereby thereis formed a centrally disposed substantially horizontal separator tubes connecting the upper ends of the upper headers to the corresponding steam and water drum, downcomers connecting said drums to the lower headers, transverse bafiies dividing the banks of tubes into a plurality of passes beginning at the steam uptake end, walls extending from the lower transverse bafiles to the steam and water'drums, a superheater in the space above each bank of tubes, and pipes connecting said superheaters with the steam space of the corresponding drum.

3. In a water tube boiler, the combination of two units each comprising a bank of inclined water'tubes, upper and lower headers into whichsaid v tubes are expanded, said units being so disposed that the upper headers converge toward each other downwardly,

whereby there is formed a centrally disposed- A-shaped combustion chamber between the units, a steam and waterdrum for each unit, substantiallyhorizontal separator tubesconnectingthe upper ends of the upsaid well, and pipes connecting said boxes with the upper and lower headers of each unit.

i. In a water tube boiler, the combination of two units each. comprising a bank of inclined water tubes, upper and lower headers into which said tubes are expanded, said units being so disposed that the upper headers converge toward each other downwardly,

whereby there formed :1 centrally disposed Ashaped combustion chamber between the units, and a refractory tile to protect the lower ends of the upper headers.

5, in a water tube boiler, the combination of two units each comprising a bank of inclined water tubes, upper and lower headers into which said tubes are expanded, said units being so disposed that the upper headers con verge toward each other downwardly, whereby there is formed a centrally disposed fii-shaped combustion chamber between the units, a refractory tile to protect the lower ends of the upper headers,a steam and water drum for each unit, tubes connecting the upper ends of the upper headersvto said drums, and downcomers connecting said drums to the lower headers.

(3. In a water tube boiler, the combination oi two units each comprising a bank of inclined water tubes, upper and lower headers into which said tubes are expanded, said units being so disposed that the upper headers converge toward each other downwardly, whereby there is formed a centrally disposed A-shaped combustion. chamber by tween the units, a refractory tile placed at the uppermost-part of the combustion chanr ber to protect the lower ends of the upper headers, bolts passing through said tile, and

a suspension member to which said bolts are attached.

7. In a water tube boiler, the con'ibination of two units each comprising a bank inclined water tubes, upper and lower headers into which said tubes are expanded, said units being so disposed that the upper head ers converge toward each other downwardly, whereby there is formed a centrally disposed A-shaped combustion chamber between the units, a refractory tiie to protect the lower ends of the upper headers, and tiles encircling the upper ends of the lowermost tubes.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses.

niwin s. iocene,

Witnesses:

E. P, TERRY,

JOHN A. W. DIXON.

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