US1249079A

US1249079A - Steam-boiler.

Info

Publication number: US1249079A
Application number: US17352417A
Authority: US
Inventors: Charles Harter
Original assignee: JOHN E O BRIEN
Current assignee: JOHN E O BRIEN
Priority date: 1917-06-08
Filing date: 1917-06-08
Publication date: 1917-12-04
Anticipated expiration: 1934-12-04

Description

C. HARTER.

STEAM BOILER.

APPLICATION FILED JUNE 8.1917.

1,249,079. Patented Dec. 4,1917.

2 SHEETS-SHEET I.

c. HARTER.

sIEAm noun. APPLICATION. FILED IUNE 8. I917.

1,249,079. Patented Dee. 4,1917.

Z SHEETS--SHEET 2- CHARLES HARTEB, OF

g1 TED STATES PATENT OFFICE.

I I smouisj vussoum, assrsnon or ONE-HALF :ro JOHN E.

OZBRIEN, or s1. LOUIS, MISSOURI.

STEAM-BOILER.

To' all whom it may concern: Beit knownthat I, CHARLES l-IAirren, a. citizen of the United States of America, a resident of the city of St. Louis, State of 5 Missouri have invented certain new and useful Improvements in Steam-Boilers, of

the following is a full, clear, and exact description, reference being had to the accompan ing drawings, forming a part of thiss'pec' cation.

invention relates to a steam boiler of t the" re tube type and it has for its object the rovision of means in a boiler of this kin through the medium of which a conwtinu'ous circulation of the waterin the boiler is created, so that the water is constantly treturned'to th'e'proximity of the fire cham- .berafte'r it'has circulated in a direction away' from said chamber toward the opposite"end of the boiler. The type of boiler to'which m improvementis more particu- .i1arlly --inten ed to be applied is that used in; 0

omotives,and I will describe the invention as used .in a locomotive boiler, with the-understanding that in so doing I do not limit myself to t 0 use of my improvement 1 etc boilers of this particular description.

The ordinary fire tube boiler used for locomotives comprises a shell including the 80 boiler barrel, the fire box partiall surrounded by the boiler barrel, the smo e box Y tand tubes" extending longitudinally of the barrel between the fire box and the smoke box, the'said tubes serving to conduct smoke and h-ot gases from the fire box to the smoke box. While some heat is radiated from the 'itubs' into" the water around them, the greatest benefit of thehe'at produced in the fire boxtoproduce steamIis created immediately 40 around the firebox, and as thereis no means 1 forcreating a continuous circulation of amater longitudinally of the" boiler a very considerable quantitv' of th'e. water-is constantly subjected only to'being heated by 4-6 the tubesfand'its temperatureis not raised.

to'the degree or the temperature of "the Mater; immediately adjacent to the fire box. Consequently, the production of" steam in or; i. l

Specification 01 Letters Patent.

mperatureg-ad'j aeenttci the fii'ebo v as the result of a constant circulation lon- Patented Dec. 4, 191 '7. 4

Application tiled June 8, 1917. Serial No 173,524.

git udinally of the boiler. It is the purpose of my invention to provide such circulation and thereby increase the efiiciency of a fire tube boiler.

Figure I is a vertical longitudinal section of my steam boiler.

Fig. II is a horizontal section of the boiler barrel.

Fig. III is a vertical cross section on line III-III, Fig. I.

Fig. IV is an enlar ed vertical cross section on line IV-IV, ig. I

Fig. V is an enlarged vertical section through one of, the vertical steam pipes anda fragment of the dividing sheet extending longitudinally of the boiler barrel.

In the drawings A designates'the barrel of 'a locomotive boiler having interiorly thereof at its rear end a fire box B, around which'water in the boiler barrel is adapted to circulate. the end of the fire box and the tube sheet (5 at the opposite end of the boiler barrel are the fire tubes 0 through which smoke and hot gases are conducted to the smoke box D. These described elements being present in ordinary locomotive boilers, no invention is herein claimed for them. 7

To provide for circulation of water longitudinally of the boiler so that it will pass forwardly away from the fire box and then return'to the fire box to be subjected to Between the tube sheet b at,

I arrange a dividing sheet 1 in the gbarre].

A at a point above the bottom of the barrel,

this dividing sheet extending from the fire,

box tube sheet 1) into proximity with the forward tube sheet cl and extending transversely from side to side of the boiler barrel, as seen in Figs. II and III. Said dividing sheet serves to subdivide the boiler barrel into upper and lower channels, between which I communication is preferably arranged for by providing one or more open-' ings 2 in the division sheet atits end farthest removed from tne fire box. \Vhile I prefer 'to'furnishcomm'unicationbetween the cha r oilerl; barrel. by' providing an.

nos in" th fir ng... a s es "time? 0 in s s; i 't ment oned. it A result 5 would b accomplished by making the division sheet of such length that it will terminate at a short distance from the forward tube sheet d.

In the use of my boiler the water at-the sides of and above the fire box B when heated rises and tends to move forwardly in the boiler barrel above the dividing sheet 1. In so doing it tends to force the water in front of it forwardly and to create a circulation from the channel above the dividing sheet to the channel beneath the dividing sheet, so that :the water in the lower channcl will be forced toward the tire box and returned to circulate around said box, where it will be subjected to the higher degree of heat radiated from said box. When the water in the boiler has been once heated, there is a constant circulation in the ath just pointed out, and the etliciency of t e boiler is rendered much greater than the efliciency of an ordinary fire tube steam boiler lackin means for occasioning longitudinal circu ation, as contemplated by my invention.

To avoid the occurrence of a steam pocket beneath the dividing sheet 1, I provide means whereby any steam created in the channel beneath the dividing sheet may be vented therefrom to the steam space at the top of the boiler barrel. The means utilized for this purpose preferably comprises a series of vertical steam vent pipes 3 extending through the dividing sheet 1 and secured thereto by nuts 4 and 5 located above and below the dividing sheet. The upper ends of .these' steam pipes are secured in any suitable .manner to stay bars 6 attached to the boiler barrel. The dividing sheet 1 is arched transversely, as shown in Fig. III, to cause the steam in the lower channel to How toward the steam pipes 3, which extend upwardly from the highest portion of the such. 1

If the dividing sheet 1 is rivetedto the tube sheet 7), the heat generated in the tire box'will be transmitted through two thicknesses of metal at thejunetion of theseparts, and the joint will be subjected to a much higher degree of heat than adjacent portions of the firebox. The tube sheet 6 is therefore preferably separated a slight distance from the adjacent end of the dividing sheet- (Fig. I) to provide a restricted passageway wherein some of the hot water rises to avoid the danger of overheating the end of the dividing sheet. Fig. III shows that the dividing sheet arranged above one group of thctubes2 and ,below another group of the tubes. This is a very important feature of the invcntioufand several advantages are obtained by arrang-.

ing the dividing sheet. between the groups of tu es If the dividing sheet was located ontirely below all of the tubes in an ordinary locomotive boiler the results I obtain would not be accomplished. The lower channel formed below the dividing sheet would be so small that no appreciable circulation would be obtained by the use of the dividin sheet. i

y arranging the dividing sheet 1 be tween the upper and lower groups of tubes,

as herein shown. '1 form two large, unob-.

structed channels wherein the water circulates freely and very rapidly. The hottestwater circulates freely and quickly in the large upper passageway above the dividing sheet, the. temperature of the water being gradually reduced as it flows away from the fire box to the passageway 2 in the dividing sheet 1. The relatively cool water flows downwardly through the passageway 2 andinto the large, unobstructed lower channel leading to the lower portion of the fire box. Owing to the peculiar manner in which the dividing sheet is combined with the upper and lower groups of tubes, a rapid circulation is obtained and the efliciency of the boiler is greatly increased. Furthermore, both groups of tubes are constantly subjected to the cleansing action of a large body of water, moving at'a high velocity toward and away from the water leg around the tire box. As a consequence, theformation of scale on the tubes is prevented and the. sediment is forcibly carried to the water leg, where it drops. by gravity to the bottom of said leg. The water passing from the fire tubes in said barrel lea-ding rom said fire box,-and a dividin sheet arranged between the groups of tu es and subdividing.

the portion-of said boiler barrel through which said tubes extend into a plurality of channels permittin longitudinally of t e boiler barrel to and circulation of Y water i from said fire box, said dividing sheet bciug thus combined with the boiler barrel and fire box to rovide a continuous endless passageway t rough which the water, riscirculated to.-

ing at the fire box, is forcibli l d h I ,oi er an t en ward the opposite-end of the back to the fire box.

2. The combination, in a boiler of. the

, achtirahter described, of a boiler barrel, a fire I boxat. one end of said boiler barrel partially surrounded by said barrel, roups of lire tubes in said barrel leading rom said tire box, and a horizontal dividin sheet arranged in said barrel between sai groups of tubes and dividin the barrel into upper and lower channels tirough which water may circulate longitudinally of the boiler barrel to and from said fire box, said dividin sheet;

bein thus combined with the boiler 'arrel and re box to provide a continuous endless water passageway through which the Water, rising at the fire box, is forcibly circulated along the groups of tubes and back to the fire box.

3. The combination, in a boiler of the character described, of a boiler barrel, a fire box at one end of said boiler barrel partially surrounded by said barrel, upper and lower roups of fire tubes in said barrel leading rom said fire box and a longitudinal dividing sheet secured in the barrel between the upper and lower groups of tubes and dividing-the barrel into large upper and lower channels through which the water can circulate freely, longitudinally of the barrel, to and from the fire box, a transverse passagewa being formed near'the end of the divi ing sheet farthest from the fire box to allow the water to circulate downwardly from the upper channel above the dividing sheet to the lower channel below said dividing sheet, said dividing sheet being thus combined with the boiler barrel and fire box to provide a continuous endless water passageway through which the water, rising at the fire box, is fdrcibly circulated along the uppergroup of tubes to a oint remote from ,theiirebox and then bac along'the lower grou of tubesto the fire box.

4.v llhe eombinatiomjin a boiler of the character described, of a boiler barrel, a fire box at one end of said boiler barrel partially as surrounded by said barrel, upper and lower groups of fire, tubes in said barrel leading rom said firebox, and a longitudinal dividing sheet extending across the barrel be 40 tween the upper and lower groups of tubes to provide a large, unobstructed upper channel for the circulation of water from the upper portion of the fire box and a large, .unobstructed lower channel for the returnof the water to the lower portion of the fire box, a transverse passageway being formed near the end of the dividing sheet farthest from the fire box to allow the water to circulate downwardly from the group of tubes in the upper channel above the dividing sheet to the group of tubes in the lower channel below said dividing sheet. said dividing sheet being thus combined with theboiler barrel and fire box to,

providea continuous endless water passageway through which the. water, risingat the fire box, isforcibly circulated along the upper roup of tubes to a point remote from the re box and then back along the lower 1 0 group of tubes to the fire box.

5. The combination, in a boiler of the character described, .of a boiler barrel, a fire box at one end of said boiler barrel 'artiallyg gurrounded by-said barrel, a water eg beingVformedaroun'd the. fire box and between the upper and lower groups of tubes to provide a large unobstructed channel for the circulation of water from the upper portion of the water leg and a large unobstructed lower channel for'the return" of the water to the lower portion of said water leg, said lower channel being in free communlcation with the relatively shallow portion of the water leg at the front of the fire box,- a transverse passageway being 30 formed near the end of the dividing sheet farthest from the fire box to allow the water to circulate downwardly from the group of tubes in the upper channel, abovethe dividing sheet, .to the group. of tubes in the lower channel below said dividing sheet, said dividing sheet bein thus combined with the boiler barrel an fire box to provide a continuous endless water passageway through which the water, rising at the fire box, is forcibly circulated along the upper group of tubes to a point remote from the fire box and then back along the lower group of tubes to the fire box, and a re-. stricted Water passageway being formed 96 between the fire box and the adjacent end of the dividing sheet. v

6. The combination, in a boiler of the character described, of a boiler barrel, a fire box at one end of said boiler, barrel 100 partially surrounded by said barrel, upper and lower groups of fire tubes in said barrel leading from said fire box, a longitudinal dividing sheet secured in the barrel between the upper and lower groups of tubes and dividing the barrel into large upper and lower channels through which the water can circulate freely, longitudinally of the barrel, to and from the fire box, a transerse passa eway being formed nearthe end of the divi ing sheet farthest from the fire box to allow the water to circulate downwardly from the upper channel above the dividing sheet to the lower channel below said dividing sheet, said dividing sheet being thus combined with the bollerbarrel and fire bpx to provide a continuous endless water passageway through which the water, rising at the fire box, is forcibly circulated along the upper group of tubes to a point remote from the fire box and then back along the lower roup of tubes to the fire box, and means or conducting steam from said lower channel to said upper channel' 7. The combination, in a boiler of the character described, of a boiler barrel, a fire box at one end of said boiler barrel partially surrounded by said barrel, fire tubes in said barrel leading from said fire box, a horizontal dividing sheet in the portion of 'whereb said barrel through which said tubes extend by which said portion of the 'barrel is subdivided into upper and lower channels through which water may circulate longitudinally of the boiler barrel to and from said fire box, said dividing sheet being thus combined with the boiler barrel and. fire box to provide a continuous endless passageway through which the water, rising at the fire box, is forcibly circulated toward the opposite end of the boiler and then back to the fire box, and steam conducting pipes leading upwardly from said -dividin sheet steam may be conducted from the ehanne beneath said dividing sheet to the steam"space at the top of the boiler barrel.

8. The combination, in a boiler of the character described, of a boiler barrel, a fire box at one end of said boiler barre] partially surrounded by said barrel, groups of fire tubes in said barrel leading from said fire box, a horizontal dividin sheet in the portion of said barrel throug which said tubes extend by which said portion of the barrel is subdivided into upper and lower channels through which water may circulate longitudinally of the boiler barrel to and from said fire box, said dividing sheet being thus combined with the boiler barrel and fire box to provide a continuous endless water passageway through which the water, risin at the fire box, is forcibl circulated ailing the groups of tubes an back to the fire box, said dividing sheet being arched transversely, and a steam conductor leading upwardly from the relatively. high portion of the arch to conduct steam from the lower channel to the steam space at the top of the boiler barrel.

In testimony that I claim the foregoing I hereunto affix my signature.

QHARLES HARTER.