US738964A - Steam-generator. - Google Patents

Description

No. 738,964. PATENTED SEPT. 15, 1903.

D. A.-WALTON.

STEAM GENERATOR.

APPLIQA'ITION FILED JULY 11. 1903.

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Patented September 15, 1903.

PATENT OFFICE.

DRUID A WALTON, OF LOUISVILLE, KENTUCKY.

STEAM-GENERATOR.

SPEGiFICATION forming part of Letters Patent No. 738,964, dated September 15, 1903. Application filed July 11I 1903. Serial No. 165,057- (Nc model.)

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, circulating-tubes of larger relatively to the boiler,

Be it known that I, DRUID A. WALTON, a citizen of the United States of America, resid-' ing at Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Steam-Generators, of which the following is a specification.

My invention has reference to improvements in the construction of steam-generators, and particularly to the means for directing the flame and gaseous products of combustion and also to provide means for obtaining a proper circulation of the water throughout the generator, my said improvements being particularly applicable to vertical steam-generators and having for their object an increase in efficiency by a better utilization of the gaseous products of combustion and a better circulation of water in generators of this type than has heretofore been accomplished.

With these objects in view my invention consists, essentially, in a vertical boiler comprising a top. and bottom drum, a series of connecting water-tubes, and a plurality of diameter than the water-tubes, and a furnace comprising a vertical partition-wall passing between the series of water-tubes, and the circulating-tubes being located on opposite sides of said partition, I and afeed-water supply communicating with one of the circulating-tubes at or near its top.

The nature of my invention will best be understood when described in connection with the accompanying drawings, in which- Figure 1 represents a vertical section of a steam-generator embodyingmy inventiomthe. plane of section being in the direction of the length of the furnace-grate. Fig. 2 is a horizontal section on the line 2 2, Fig. 1. Fig. 3 is a similar section on the line 3 3, Fig. 1.

Fig. 4 is an enlarged vertical section showing the manner of attaching the ends of the circulating-tubes to the heads of the drums.

Similar letters and numerals of reference designate corresponding parts throughout the several views of the drawings.

Referring now to the drawings, the letter A designates a vertical boiler comprising primarily in its construction a lower drum a, suitably supported in the masonry of the f urnace, anupper drum 1), inclosed by a proper coping c at the top of the furnace-walls, and a series of tubes 1, connecting said drums, all as is usual in boilers of this construction.

B is the fire-grate, placed in a furnace of a a usual construction, upon which the matter for combustion is consumed, and O is a partitionwall which in the present example extends upwardly from the lower drum, between the tubes, to a predetermined distance below the upper drum, thus dividing the flame or gas channels formed between the tubes into two series, in the first of which the gaseous prodnote of combustion and the flame pass upwardly, while in the other series they pass downwardly and into the arched chamber D, leading to the flue or chimney E. The partition-wall C is preferably arranged centrally with respect to the boiler-that is, to extend diametrically across the boiler-although it could be placed to one side or the other. By means of this partition-walll fully utilize the heat of the gases, and therefore obtain an increased efficiency over and above such forms where the gases are passed directly through the space surrounding the water-tubes, which practically forms the combustion-chamber in such types of steam-generators.

In the boilers of the class herein shown it has always been customary to make the watertubes all of the same diameter. In the con struction herein shown I make use of a plurality of tubes F F of considerably larger diameter than that of the regular water-tubes and place one ormore of said tubes on one side of the partition-walL-as, for instance,the tube F-and the other, F, on the other side of thepartition-wall. Thefeed-waterissupplied by means of a pipe G, which passes through the upper drum 1) to the circulating-tube F, asl shall hereinafter term thesetubes, and consequently the direction of the circulation will be downwardly through said tube F to the lower drum a and .upwardly through all the smaller tubes 1 and down the circulating tubes F under a forced condition,thus insur ing a substantially perfect circulation and a ready separation of steam from the upper the two drums firmly together and increasing the strength of the boiler as a whole. The

manner of flanging the heads and riveting the tubes to such heads is best seen in Fig. 4.

lVhat'I claim as new is- 1. Avertical boiler comprising a top and a bottom drum, a series of connecting watertubes, and a plurality of circulating-tubes of larger diameter than the water-tubes, and a furnace comprising a vertical partition-wall passing between the series of water-tubes and the circulating-tubes being located on opposite sides of said partition, and a feed-water supply communicating with one of the circulating-tubes at or near its top, substantially as and for the purpose set forth.

2. A vertical boiler comprising a top and a bottom drum, a series of connecting watertubes, and a plurality of circulating-tubes of DRUID Ai VALTON.

Witnesses y W. 'l. HALE, JOHN DIARSHALL

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