US1058293A - Sectional water-tube boiler. - Google Patents

Description

P. F. DUNDON. SEGTIQNAL WATER TUBE BOILER.

APPLICATION FILED JULY 3.1911.

4 SHEETS-SHEET 1.

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AFN-NATION FILED JULY 3. 1911.

Patented Apr. 8, 1918.

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T P. DUNDON. SECTIONAL WATER TUBE BOILER.

Patented Apr. 8, 1913.

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APPLIGATION FILED JULY 3 P. FQDUNDON SEG'IIONAL WATER TUBE BOILER.

APBLIUATIOH TILED JULY 3, 1911.

Patented Apr. 8, 1913v 4 SHEET8SHEET 4:

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PATRICK 5. ETUNDOII, OF SAN FRANCISCO, iiALIFORNIA SEQTIONAL WATER-TUBE BGILER.

To all whom it may concern.

Be it known that I, PATRICK F. DUNnoN, a citizen of the United States, residing at San Francisco, in county of San Francisco and State of California, have invented certain new and useful Improvements in Sectional VVater-Tube Boilers, of -which the following is a specification.

My invention relates to an improvement in sectional water-tube boilers.

The object is to provide an improved circulating system by constructing the boiler on scientific lines and principles; to provide a boiler of simplified construction with a 'maxin'iuin of heating and enerating surfaces Within a given space, novel in arrangement and convenient to set up or dismantle; and to malreprovisions for free and easy access to the various parts from the exterior, for cleaning or other purposes.

Nith these and other objects in view, this invention consists in certain novel features of construction and combinations of parts which will be hereinafter fully described and pointed out in the claims.

In the accompanying drawings :Figure l is a view in frontelevation with half of the front plate removed, and the interior parts transversely sectioned to show the internal construction, Figs. 2 and 3 are views of o posite ends of my improved Watertube oiler in longitudinal section, parts of the interior being shown in elevation, and others in section, the two views being continuations of each other with the center portion broken out, Fig. 4 is an enlarged detail in longitudinal vertical section through one of the end circulating chambers showing the ends of the tubes connected therewith, Fig. 5 is an end view of one of these chambers, and Fig. 6 is an enlarged transverse section through two of the inner and outer tubes.

As in my Letters Patent No. 611,407, granted Sept. 2?, l8l8, rny present invention is in the main made up of series of units composed each of clusters of preferably seven outer and seven inner tubes 1,,1, and

2, 2, respectively, they being maintained in.

this concentric arrangement by centeringpins 3, secured to the innertubes 2, 2, and titted-to the bores of the outer. tubes l, l', as shown in enlarged section in Fig. 6. The purpose of these inner tubes is to break the solidity of the "water currents of the main or Specification of Letters Patent.

application filed July 3, 1811.

Iatented Apr. 1913. Serial be. 636,677.

outer tubes, which is accomplished by creating an annular body of water between the inner and outer tubes and a smaller bod of water again within the inner tube; and by providing the. annular body of water which is contained between the two' surfaces of these tubes and which is exposed to the high. degree of surface of the water tubes, the small body of heat which is applied to the outer water contained between the two tubes is rapidly heated, and in that way a lively circulation of the water is the settlement and adhesion-of sediment on the exposed surfaces, and it also equalizes produced within the boiler which is highly essential in a boiler of this particular class for it prevents.

the temperature throughout the boiler and causes more rapid evaporation. .By the inner tubes' removable as shown, they may be drawn out when the boilers are opened up to permit examinationorscaling of the inside of the main tubes; These clusters of concentrically-arranged tubes are disposed dia onally, as shown in Figs. 2, 3,

making and a, they eing secured at their ends in v thecirculating chambers 4, 42, in whichthe ends of the outer tubes are set and expanded,

as shown in Fig. 4. These circulating chain:

bers i, L, are mounted one on. top of another, in four vertical rows, at front and rear ends of the boiler in the particular construction illustrated, they being connected by thiinbles 5, 5, expanded at their ends as shown in Figs. 1, 2, and 3. These circulating chambers are supported and similarly connected with, the two drums 6 and 7 at the bottom, the latter constituting a mud-drum, being located at the lowermost point in the furnace; and Sui-mounting these vertical rows of circulating chambers are the two drums 8 and 9, the latter being of large size and constituting the main steam drum.

At the forward end of the'furnace, the circulating drums 6 and 8, and the intermediate circulating chambers are referably supported on the stands or sadd cs 10, 16,.

Circulating tubes 13, 13, extend between the lower circulating drum and muddrum, their ends being preferably held in place by steel flanges let, l4;, riveted on the drums into which the ends of the tubes are set and expanded; and from the upper front circulating drum 8 to the steam drum, a number otsteam circulating pipes 15, 15, extend, they being similarly connected by means of steelfianges 16, 1G, to their respective drums.

Hand holes 17, 17, are provided at various points, notably in the drums and circulating chambers at points opposite to or in line with the tubes, as illustrated in Figs. 2, 3, and 4-. The edges of these'hand-holes or man-holes extend upwardly in the form of a flange 17. These hand holes are closed by gasketed plates 18, which preferably have handles 19, 19, for convenience in the manipulation of same; and these hand-hole plates or covers are held securely in place by means of bolts 20, 20, the heads of which are slidably secured in the grooves 21 on the plates, and the spanner bars 22, 22, by turning the nuts 23, 23, securely on the bolts. Doors 24. and 25 on the front plate of. the boiler and at other points, if desired, aiiford a means of access to these hand-holes. Through these man-holes or hand-holes, the tubes may be removed and replaced, or the tubes cleaned out, or inspected.

The grate 26 is located at the forward end with the usual doors 27 and 28 for the tire and ash pit respectively, and the products of combustion are directed circuitously by the baffles 29, 29, made of refractory material alternately arranged, as shown in Figs. 2

and 3; and by this means, the heat will be absorbed from the gases before they are allowed to escape through the chimney.

As shown in Fig. 1. open spaces 30, 30, are provided between the horizontal clusters of tubes, they being covered by means of removable plates 31, 31., and through these open spaces, either steam or air under pressure may be used to blow 0E soot or ashes from the tubes'and battles.

The parts described may be incased in any approved manner by stiff sheet steel or any other material. The outlet to the chimney fine may be directed under the steam drum, as illustrated in Fig. 3, or it might be brought up on the front side of the drum, if desired, although the drawings do not show this From the foregoing description, it will be seen that with the circulating drums 6 and 8 in front of the furnace, the steam drum and the mud-drum at the top and bottom of the rear of the furnace respectively, (when connected by all the tubes as shown and described), a clear and unobstructed circulation is obtained in every direction.

I-laving fully described my invention,

what I claim as new and desire to secure by Letters Patent, is

1. In a steam boiler, circulating chambers, and clusters of concentric tubes connected to and communicating with the circulating chambers at their opposite ends.

2. In a steam-boiler, circulating chambers, tubes connected at their ends to said therewith, and having centering devices for maintaining their position within the outer tubes, said interior tubes opening into the circulating chambers.

3. In a steamboiler, transversely-disposed circulatin drums arranged at the top and bottom 0' one end of the boiler, a steam drum and a mud-drum correspondingly arranged at the other end or. the boiler, circulating chambers located vertically between said upper and lower drums and in com- -munication therewith, and circulating pipes extending lengthwise of the furnace from the steam and muddrums to the drums at the opposite ends of the furnace.

i. In a steam-boiler, transversely-disposed circulating drums arranged at the top and bottom of one end of the boiler, a steam ranged at the other end of the'boiier, circulating chambers located vertically between said upper and lower drums and in communication therewith, circulating pipes extending lengthwise oi the furnace from the steam and mud-drums to the drums at the opposite ends of the furnace, and clusters of tubes extending from the circuia ing chambers at one end of the furnace to those at the opposite end.

5. In a steam-boiler, transverselydisposed circulating drums arranged at the top and bottom of one end or" the boiler, a steam drum and a mud-drum correspondingly arranged at the other end 01 the boiler, circulating chambers located vertically between said upper and lower drums in communication therewith, circulating pipes extending lengthwise oft the furnace from the steam and. mud-drums to the drums at the opposite ends of the furnace, and clusters of concentric tubes extending from the circuthose at the opposite end.

6. 111 a steam-boiler,transversery-disposed circulating drums arranged at the top and bottom or one end of the boiler, a steam drum and a mud-drum correspondingly arranged at the other end. of the boiior, circu lating chambers, located vertically between said upper and lower drums, circulating pipes extending lengthwise of the furnace from the steam and mud-drums to the drums at the opposite ends of the furnace, and clu chambers at one end of the furnace to those atthe opposite end, and baffies extending chambers, and internal tubes concentric drum and a mud-drum correspondingly arters of tubes extending fromthe circulating lating chambers at one end of the furnace to vertical stacks between said drums and in communication therewith, said chambers communicating with one another, and their communicating passages in alinement.

8. In asteam-boiler, transversely-disposed drums, circulating chambers interposed in vertical stacks between said drums and in communication therewith, concentric tubes connecting and communicating with said circulating chambers, said chambers having unobstructed interiors, and their communicating passages in alinement, and circulating pipes connecting the oppositely-located front and rear drums.

9. Ina steamboiler, transversely-disposed drums, circulating chambers interposed in vertical stacks between said drums and in communication therewith, concentric tubes connecting and communicating with said circulating chambers, said chambers having unobstructed interiors, and their communicating passages in alinement:

In testimony whereof I afiix my signature, in the presence of two witnesses.

PATRICK Ft DUNDON.

Witnesses:

CHARLES EDELMAN, J. A. BYRNES.

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