US1563938A - Water-tube boiler - Google Patents

Description

Dec. 1, 1925- J. M. SULLIVAN WATER TUBE BOILER Original Filed Aug. 26. 1920 76, 72 @ZlZZit/QIZ witness:

Patented Dec. 1, 1925.

UNITED STATES JOHN M. SULLIVAN, 0F CULVER, INDIANA.

WATER-TUBE BOILER.

Originalapplication filed August 26,

To all whom it may concern:

Be it known that I, JOHN M. SULLIVAN, a citizen of the United States, residing at Culver, in the county of Marshall and State ofIndia-na, have invented certain new and between the ends of the boiler tubes; the rear useful Improvements in ater-Tube Boilers, of which the following is a specification.

This invention pertains in general to steam boilers, this application being a division of my United States Letters Patent No. 1,473,- T12, granted November 13, 1923, for water tube boilers. One of the primary purposes of thisinvention is to provide a boiler with baffles so connected that a continuous circulation of water through them will be maintained so as to prevent the baffles from burning out, the baffles being connected in a closed circuit, including a feed water heater, so that the heat units absorbed by the water in the baffles will be transmitted to the feed water on route to the boiler, thereby conserving these units.

Another object of the invention is the provision of water cooled baffles which will not become clogged with sediment and sludge, such as customarily collects in baflles to which fresh water is continuously supplied,

1 and in which scale and other deposits likely to detract from the efficiency of the apparatus will not collect by reason of the fact that the same water is continuously circulated through the bafiles' in a closed circuit.

Another purpose of the invention is to so arrange the battles that the water flow therein will be in a direction counter to the direction of passage of products of combustion around the baflies, thereby promoting a high eliiciency of the boiler.

On the accompanying drawing, the single figure of which is a longitudinal view partially in section of a boiler embodying my invention, the boiler is represented as of the usual tube type comprising the tubes 3, mounted in and connected to the front and rear headers 4 and 5, respectively, which headers are in turn connected with the steam drum or cylinder 6 disposed above the tubes. The fire box 7 is located as usual beneath the tubes above the grates 8, the ash pit 9 being disposed beneath the grates, and access to the fire box and to the ash pit being obtained through the doors 11 and 12 respectively. The products of combustion are delivered through the outlet flue 13 connected to a chimney or stack in the usual manner.

1920, Serial No. 406,113. Divided and this application filed October Serial No. 670,821. 1

Between the fire box and the flue are located a plurality of battles, indicated by referencecharactersl l and 15 respectively, and, as'willbe apparent from the drawings, these baffles are disposed in spaced relation baffle 15 extends from the drum 6 in a substanially vertical plane downwardly a short distance beneath the lowermost tube 3, while the front battle extends upwardly from a point in proximity to the fire box to a point slightly above the uppermost tube 3. Each baffle is of hollow construction and is provided with a series of transversely disposed thimbles 16 forming a water tight connection with the walls of the baffle, the thimbles being of suitable size to accommodate the water tubes 3, which extend therethrough and fit loosely therein. This construction permits the ready removal and replacement of the tubes when necessary for repairs or other purposes without interference by the baffles. The lower ends of the baffles are connected by one or more pipes 17, as shown.

tition 23 precludes direct flow of water from' the topto the bottom, or vice versa,.of the space at one end of the heater between the header 19 and the end ofthe' drum. The fresh water to be delivered to the boiler enters the heater from any suitablesource through the pipe 2 1, thence flows to the opposite end of the heater, thence upwardly and backwardly andis delivered to the drum 6 of the boiler through the pipe 25.

The upper end of the rear baffle 15 is connected with the bottom of the feed water heater by a pipe 26 and the upper end of the other baflle 14; is connected to the top of the heater by a pipe 27 Both pipes 26 and 27 connect with the chamber of the feed water heater surrounding the tubes 22, and the water surrounding these tubes will heat the water flowing through the tubes.

In the operation of my invention the prod nets of combustion rising from the fire box 7 pass upwardly in front of the forward baflle 14, thence over the bafile downwardly between the bafiles, thence rearwardly beneath the rear baitle and thence upwardly to the outlet flue. The water tubes -3 :and the water therein are heated by these products of combustion and likewise the Water in thebafiles let and 15, is also heated. Since the baffle 14 is'locate'd in the hottest part of the furnace, the water therein will be highly heated, will rise through the-pipe 27 nd be de vered in o 1 t e: teed W t r met -l 11 1 11 flowing: downw rdly ar und th tubes 2-2, it will; give up a considerable proto the boiler, and the pool-water will flow downwardly through the pipe into the rear baffle 15, where it will become again .p l yhea ed and wil henflfl w-thron pipes 17 into the forward .baflle to be, further .lieatec i ,7

The bellies are connected in a closed circuit, which is initially fiilled with clean freshwater. This water,is-continuously ,cir-

,c-ulated and is heated in thebatlles and gives ,ofi itsheat to .the ifeed waterin the feed water heater. Since: the samewater is continuously beingcirculated and reheated 1t will be observed thatscale, sludgeand other of the battles and theirheat conducting proper;ties is, thereforenof fi ili i li hed withcontlnueCl use; but, "o th ot ham llls' degreeot efficiency is at aill times maintained- Th aifie are ef t vely 'ea e by the water therein so .that liability of their burning out is reduced to a ni' i num .and all .of the heat units absorbe rouglrthe ffl a e I on rved al fil eisl' r s t the boiler feedwater. a o

The structural, details;illustratedgand de- V scribed may obviously be varied within considerable lllllllLS WlllhQHl) ;,exce ed;1ng {the 89011 1.-I'n a watertube boiler, the combination drum above and communicating with said tubes, a front hollow baffle and a rear 1101- low battle intermediate the ends of said tubes, the front bai'lle being adjacent the fire box and so spaced as to permit the products of combustionto pass above thesarne, the rearbafilerben g so" spaced as toper-init thejsaid vproducts to pass between it and v the front battle, and thenbeneath the same, portion of its heat to the fresh water; flowing means providing communication between the-hollow interiors of said'bafiies at their lower ends, a feed water heater, andpipes Jofiaplu 'ality of Water tubes, a front hollow bathe and rear hollow bailie' intermediate the ends of said tubes and dividing the said boiler into, three .distinctgaspassageways, a lire box; beneath thefirst passageway, means providing communication between the hollow inte'riorsof said bafiles at. their lower ends, a feed water heater, and pipes connecting said heater, andthe interiors of said bailies to form aclosed circuit.

3. .In a watertube boiler, the combinat on .ofa pluralityoi water tubes, a front hollow battle and rear hollow balile intermediate the (ends of said tubes and d vid ng the. said boiler into three dist nct assageways for -the circulation of the proc ucts of combustion around said tubes, a fire box beneath ,the first passageway, means providing comntmication between the hollowvinteriors of id b tfl -:.et he rlQWe nds, a e Water heater having aplurality of tubes .for cirl l tin'g e d Water nd Pipe co n n the interior of said heater around said tubes andithe interior of said bafiies to "form a viela e i ir n tor t e fl w of hea ed Wa e fronrsaidbafiiesfto raise. the temperature of aidieedate ]J M SULLIVA

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