US1066244A - Soot boiler-cleaner. - Google Patents

Description

L J. BAYER.

SOOT BOILER CLEANER. APPLIOATION FILED OUT. 9, 1912.

1,066,244, 7 Patent'ed July 1, 1913.

2 BHEETS-BHBET 1- WITNESSES: INVENTOR. I

ATTORNE I L. LBAYER. 800T BOILER CLEANER. APPLIOATION FILED 00w. 9, 1912.

Patented July .1, 1913 2 SHEETS-SHEET 2.

WITNESSES: $41 2. W

L vIM/b v Wm ,3 /J. Wm 72d A w L LEO J'NO. BAYER, OF ST. LOUIS, MISSOURI, ASSIGN OR TO BAYER STEAM SOO'I BLOWER COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI.

$001 BOILER-CLEANER.

To all whom it may concern Be it known that I, Lno Joim BAYER. citizen of the United States, residing .at St. Louis, State of Missouri, have invented certain new and useful Improvements in Soot Boiler-Cleaners, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has, relation to improvements in soot boiler-cleaners or blowers; and itcon'sists in the novel features of construction inore fully set forth in the specification and pointed out in the claims.

In thedrawings, Figure 1 is a sectional side elevation of a water-tube boilerof the I-leine-type showing my invention applied thereto; Fig. 2 is a horizontal section on the zig-zag, line 22 of'Fig. 1; Fig. 3 is a front elevatidn of the boiler showing my blower in place; and Fig. 4 is a rear elevation thereof with my blower in position.

The'present invention is an improvement on the general class of'soot boiler-cleaners (adapted for the Heine or Heine-type of boiler) forming the subject-matter of 'U. S. patents numbered 900,078, d'ated October 6, 1908; 919,680, dated April 27, 1909', granted to Frank X. Bayer; and 1,082,583 issued to me uiider date of July 16,1912. The improvement herein is specifically directed to a horizontally baiiled Heine (or Heine-type) boiler' of the shallow type, that is to say one in which the top and bottombafiies are relatively near each other, thereby forming a comparatively narrow line or passage between them. This is the case where the depth (01' height) of the boiler below the shell or drum does not exceed six or seven tubes (measured vertically along the tube area of either water-leg).

The object sought is to so position the front cleaning nozzlcs'rolativoly to the bafties, that one set of nozzles will perform the function of what previous to my invention was accomplished by two such sets (or rows). In the blowing or cleaning operation, not only is it necessary that the soot and dirt shall be dislodged from the water tubes (and other parts of the boiler) but. that the material so dislodged shouldl-e carried out of the stack by the draft of the furnace. Th6 blowing nozzles must therefore be so positioned as not to interfere with the draft, but on the contrary assist it or operate in Specification of Letters Patent.

Patented July 1, 1913.

Application filed October 9, 1912. Serial No. 724,757.

conjunction therewith. In all horizontally baffled Heine (or Heine-type) boilers one of the zones of soot precipitation is against the front water leg at the front of the bottom baffle, another zone being at the rear of the top ballie in the region of the stack. Pre-. viously in the art, the bottom row of front nozzles was employed to agitate and dislodge the material aceumulating in the first zone of precipitation mentioned, a second set of nozzles (relatively close to the shell,

or at least above the center of the tube area) being employed in the front to operate .in conjunction with the draft for carryingthe material rearwardly over-the front end of the top batile into the space between said batlie and the boiler shell, the rear top set of nozzles agitating the material in the region of the base of the stack, thus causing the entire mass of dislodged material to find its way to and out of the stack. In my present improvement I dispense with the upper set of front nozzles thus cutting down the ex-' pense of material and installation, and so position the one remaining set relatively to the baffles, that the jets emanating from this set will not only serve to agitate and dislodge the soot, dirt, and other accumulations, but at the same time direct such dislodged material into the path of the current ursued by the combustion products, that is to say, the current produced by the draft.

The invention in detail may be described as follows Referring to the drawings, S represents a boiler shell having terminal water-legs L, L, connected by circulating water-tubes T. Extending over the fire-box B, and above the bridge-wall W, and a suitable distance over the rear combustion chamber C, and disposed at the bottom of the water-tubes '1, IS a deflecting wall or horizontal baffle 6;, said batlle termlnating so as to leave an opening or pass 0' between it and the rear water-leg as well understood in the art. Disposed at the top of the water-tube sec tion,.and extending from the rear water-leg forward a suitable distance (so as to leave apass 0 between it and the front waterleg) is a second baiile 7). Leading from a steam supply pipe 1, in front of the front water-leg is a header2 provided with a. valve V, the free end'of the header being closed. Leadin from the header 2 are branches t to wiich are secured nozzles 10,

said nozzles passing through a row of hollow stay-bolts .72, entering into the general construction of the water-leg. Theplaiie of tween the bullies being comparatively narrow, the combustion products passing forwardly between the bailles are forced (by virtue of the draft pressure behind them) to make a rearward turn or return close to the bottom baflie as shown by the arrows in Fig. l.

It is ofcourse, well understood that a jet of steam issuing from an orifice will expand more or less; and advantage is taken of this expansion in positioning the nozzles 71, the particular row of stay-holts h selected being such that a portion of the jet forceis utilized in dislodging and agitating the dirt in the zone '1, another portion diverging and being responsive to the return'bend of the current followed by the combustion products in passing over the front end of the upper battle 7). The nozzles n thus perform the double function of cleaners and agitators,

and of blowers a portion of whose jet force is diverted to follow the general path of the draft. The shallower the boiler, that is to say, the closer the batlies a and Z) are brought together, the lower may the front nozzles 11 be placed, because the lower will be the point at which the front return of the gases will take place. The deeper the boiler, the higher up willbe the point of front return of the gases, and after the height has passed say seven or eight tubes, a special row of front nozzles must be improvised at pointsabove the center of the tube area to carry the products rearward over the front end of the top battle. The latter arrangement is covered by the prior art, and from. this my present improvement is thusdist-inguished.

In the rear of the. boiler I provide a steamsupply pipe 1 from which leads a branch or header 2 the nozzles a whereof dis chargc above the top ballie Z) behind (in front of) the rear water leg, and a branch 3 thonozzles a whereof discharge below the ballle b, in l-ind (in front of) the rear waterleg into the spaces between the tubes T. The several headers are provided with conventional control valves V well understood in the art. The action of the nozzles 11,, n,

on the zones of preclinitation r, r, are the] same as in the prior pal cnts above referred to, the nozzles n serving both as blowers and agitators, and assisting the general draft, while the nozzles n are primarily mere agitators (tending to blow against the draft) dislodging' and agitating the dirt'in the region of the base of the stack D, the material being forced out by the current re-. inforced by the jets from the nozzles n and n. Broadly speaking all the various nozzles are blowers I but by way of dis tinction those which s mply agitate and dis- 5 lodge the dirt by jets directed against the general trend of the draft are termed agitators (nozzles n Whereas those which dislodge the dirt and blow with the draft are termed blowers .(nozzles 11). Undermy present invention'the nozzles 11 are so positioned in their relation to the planes of the battles a, b, that they servesimultaneously both as agitators and blowers, thus performing a double function. When the several nozzles are-blown, the accumulated soot, ashes and solid materials are dislodged from the tubes '1, shell S, (and water-legs L'), and from the baflies (L and Z), and kept agitated so as to remain in suspension in the current produced by the furnace draft, such current taking the path fromthe fire-box substantially as indicated by the arrows (Fig. 1). The jets from the nozzles 11 will diverge so as to dislodge and agitate the material in the zone 7', a portion of the jet force following'the draft at the gas re- .turn just above the bend (marked av) and impelling the material rearwardlyover the front end of the top baffle 12. The branches t may be considered as forming partof the nozzles (01,, n, n). The boiler furnace F may be said to be composed of the usual setting and including the parts B, C, W, and D, previously referred to.

.Having described my invention what I claim is Y v 1. In combination with a boiler furnace, a boiler having a water-tube section provided I with horizontal batlles spaced vertically apart, means for causing the furnace draft to carry the gas in one direction in the'space between the baflles, and suitable jet nozzles positioned at one end of said water-tube section between the planes of the battles and operating partly against the draft toclean the acemmilations above the bottom battle at said end, and partly with the draft to divert the dislodged material in the opposite direction over the upper bathe. i

2. In combination with a boiler having a shell and a. water-tube section comprising a front and rear water-leg and connecting circulating tubcs, a bottom horizontal ballle extending from the front-waterdeg toa point removed a suitable distance from the rear water-leg, a top horizontal ballle' spaced vertically apart from the bottom halite and extending from the rear water-leg to a'point removed a suitable distance from the front water-leg, blowing nozzles leading through the rear water-leg below the top battle and discharging forward into the spaces between the tubes, nozzles discharging forward behind the rear water-leg into the space above the top' battle, and a set of jet nozzles, discharging rearward behind the front waterleg, disposed between the planes of the battles, and positioned to partly blow against the draft to dislodge and agitate the accumulations at the front end of the bottom baflie and partly with the draft to divert the dislodged material into the current passing rearward over the front end of the top baffle.

3. In combination with a boiler having a shell and a water-tube section comprising a front and rear water-leg and connecting circulating tubes, a-bottom horizontal bafiie extending from the front water -leg to a point removed a suitable distance from the, rear water-leg,,a top horizontal baflie spaced vertica ly apart from the bottom battle and eX- tending from the rear water-leg to a point removed'a suitable distance from the front water-leg, blowing nozzles leading through the rea'r Water-leg below the top baflle and discharging fo ward into the spaces between the tubes, agitadng nozzles leading through the rear water-le into the space above the top baffle, and a set of nozzles leading &

through the front water leg at points be tween the planes of the battles and discharging rearwardly, and operating partly against he draft to dislodge and agitate the accuniul LlIlOIlS at the front portion of the bottom baflle, and partly with the draft to divert said dislodged material into the return bend of the current passing rearwardly over the front end of the top bafile.

4. In combination with a boiler having a shell, front and rear waterlegs and connecting circulating tubes, top and bottom bafiies between the water-legs terminating respectively at suitable distances from the front and rear water-legs, a furnace creating a draft forward between the battles, and rearward above the top battle, and a' set of jet nozzles discharging rearward behind the front water-leg and operating partly against the draft to dislodge the soot and dirt from the front end of the bottom baffle, and partly with the draft to discharge *into the return current passing rearward over the top bafiie, whereby the material dislodged is drawn into said current.

In testimony whereof I affix my signature,

FANNIE E. VEBER.

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