US178244A - Improvement in circulating devices for steam-boilers - Google Patents

Description

2 Sheets-Sheet 1 B. S. KOLL.

CIRCULATING DEVICE FOR STEAM BOILER.

Patented. June 6, 1876.

No. 178.Z44.

N. PETERS. PHormuYHneRAPnEn, WASHINGTON, Di 8,

'and useful Improvement in Steam-Boiler Attachments; and I do hereby declare the-folthis specification, in Which-like letters indiit is also applicable to what are commonly and extending. through nearly or the greater 7 pin, -b, and each section is made T-shaped PATENT I Err-ole.

BENJAMIN s. KOLL', 70F PITTSBURG, PENNSYLVANIA.

IMPROVEMENT, lN CIRCULATINGDEVICES FOR STEAM-BOILERS.

Specification forming part of Letters Patent No. 178,244, dated J une 6, 1876; application filed April 1, 1876.

To all whom it may concern:

. Be it known thatI, BENJAMIN S. KOLL, of Pittsburg, county of Allegheny, State of Pennsylvania, have invented or discovered a new lowing to be a full, clear, concise, and exact description thereof, reference being had to the accompanyingdrawings,making a part of eating like parts-- Figured, Sheet 1, is a perspective view, partly in section, of a common steam-boiler fitted with my improvements. Fig. 2 is a rearend elevation of the same, showing, by dotted lines, the arrangement of aportion of the devices inclosed therein. Fig. 3 is adetached view of the curved jointed T-shaped bearing of the circulation-plates. Fig. 4, Sheet 2, is -a perspective View, partly in section, showing a portion of my improvements as applied to a locomotive-boiler; and Fig. 5 is a transverse sectional elevation of a sectional boiler, also illustrative of the application thereto of a portion of my improvements.

My invention relates, chiefly, to that class of steam-boilers known as flue or cylinder boilers for generating steam for either land or marine engines, though in some of its features known as sectional boilers and the nature of it consists in the features of construction and combination of devices or apparatus applied or arranged inside the b0il6I,fSl1bStl.ll-- tially as hereinafter set forth and claimed.

The cylindrical boiler A has anyknown or desired arrangement of flues, A one or more in number, and the usual steam drum A Along the bottom of the inside of the boiler,

part of its length is a vertical diaphragm, 8, extending up about one third the diameter of the boiler, more or less. on each side of this diaphragm, at each end of the boiler, and at intermediate points, if necessary, I arrange the curved jointed bearings B. -(Shown in Figs. 1 and 3.) These bearings are made of sections jointed together by a hinge or pivot transversely, the head of the T facing inward.

The object of this curved jointed construction phragm s, and the curved parts following the curvature of the shell of the boiler, extending up to a point a little below the water-line, but preferably a littleabove the tops of the lines A The spaces thus inclosed between a and s, and between a and A, constitute a circulation-chamber, in which the'water, under the action of the heat and other causes, will follow the general direction indicated by the arrows. Just above the upper outer ends of such chamber, and extending lengthwise of the boiler, is a deflecting-plate, d, which performs the office of deflecting the upward flow of the water inthe line of circulation, away from the shell of the boiler, above the fire-line, onto the tops of the fines A even when, through the negligence of the engineer or otherwise, the level of the water in the boiler may be belowthe tops of the lines. The water then, descending, passes down between the diaphragm s and the vertical plates'a, and again passes up between the plates at and the shell of the boiler.

These plates at a, are preferably made in sections, so that they can beintrod need through the man-hole, and applied to boilers already wise secured thereto, will suffice to hold them in place.

- The vertical lates a are however so disposed that the bulk of .the water, in its downward flow, will pass through the trough shaped dead-water spaces 0, Fig. 2, before reentering the exterior circulation-chamber described. Salts, silicates, sedimentary matter,

&c., contained in the water will here be deposited, or be retained in solution, as the solutions acquire a high specific gravity, and are blown out or drawn off by the pipes P, one at or near the bottom of each such space,and for opening such blow-off the cocks P are provided. Also, in order to facilitate the discharge through such pipes and cooks, I arrange at the opposite end of the boiler a steam wash-pipe, e, which extends from the steamspace above the water-line down to the bot-- tom of the dead-water spaces a, where, dividing into two branches, 0 6, it opens into each dead-water space in the direction the blowoff is to be effected. Then, when the blowofi -cocks are opened, the deadwater,--with its deposits. in starting toward the opening, will reduce the pressure at the open ends of the pipes e sufficiently for the steam to force its Way down the pipe 6, blow out at the open ends of e, and facilitate or hasten the removal of the loaded or saturated dead-Water in the spaces 0.

The next part of my invention relates to the discharge of the feed-water (after being heated or partly heated in coiled pipes, or without heating, as may be preferred) into the circulation spaces or chambers, in the direction of the flow of the circulatory currents already described. For this purpose the feed-water may be introduced through a pipe, g, coiled in the boiler-space, as shown, or through a pipe, 9, coiled in the steam-drum. In either case the feed-water, after being thus heated or partly heated, is carried by one or more doWn-goin g pipes, h, to the bottom of the boiler,

and thence, by the curved brauches h, into the circulation-chambers, between the plates a and the shell of the boiler, and these branches, being in line with the direction of circulation discharge therein, and so add to the force and velocity of such currents, and

effectually prevent the accumulation or formation of strata of water in the boiler of different temperatures. Or, if the feed-water be fed in with little or .no pressure, the action or direction of flow of the circulatory currents willtake the boiler-pressure off the discharge.

ends ofthe pipes, and allow the feed-water to flow-in freely.

. This feature of the invention is shownas applied to alocomotive-boiler in Fig. 4, where A represents the boiler-shell next to the firebox; a, a, the circulation-plates; s, the diaphragm already described, and h the feedwater discharge-pipe, arranged to discharge inthe lineof and with the circulatory watercurrents, the direction of which is indicated by the arrows. The same element is shown in Fig. 5 in connection with a sectional boiler,

-h being the feed-water pipe, and h the discharge, arranged, as before, to discharge in the line of and with the circulation, as also indicated by arrows.

In lieu of the T-shaped bearings, angleiron bearings may be employed, and when the links are made short, each one may be made straight instead of curved, though they will, as a'whole, take substantially a curved form when in place. The use of a diaphragm, s, for dividing the circulatory system of a flue or cylinder boiler into two parts, each operat ingindependentlyof the other, so far as relates to the rapidity of the flow, is important, where, as often happens, the fire on one side of the boiler is a little hotter than on the opening between the lower adjacent edges of such plates for a downward current, to supply the upwardcurrent between the plates and the shell of the boiler, substantially as set forth.

3. Acirculation-plate, a a, arranged'in a cylinder or flue boiler, substantially as set forth, whereby a trough-shaped dead-water space, 0, is secured above the bottom of the boiler, and a little out of the line of circulation.

4. The combination ofcirculation-plates a a,

following the curvature of the boilershell and deflecting-plates d, attached to the shell; substantially as set forth. 1

5. The vertical diaphragm's, in c0mbina= tionwith a system of circulation plates and passages on either side, substantially as and for thepu-rposes set forth. I 6. The plates or a, constructed as described,

so as to fornrdead-water troughs c, incombination with a blow-off pipe, P, arranged therein, substantially as set forth.

7. The combination of blow-off pipes-P and steam washpipes e e, relatively arranged in the dead-water troughs, substantially as set'forth.

8. In a boiler having a system of waterciroulatioupassages, wherein circulation is, v

kept up in such passages by the fire heat or diflerences'of temperature, the arrangement of the feed-water pipe in the line of 'water circulation, and discharging in the direction of the flow of the currents, substantially as set forth. I

9. A duplicate system of water-feed, watercirculation,"and water blow-off, arranged in the opposite halves of a cylinder or flue boiler,

and on opposite sides of a vertical longitudinal diaphragm, substantially as set forth.

In testimony whereof I have hereunto set my hand.

BENJAMIN S. KOLL.

- Witnesses: I

JAMESM. OHRIsTY, GLAUDIUs L. PARKER.

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