US857170A - Oil-burning steam-boiler. - Google Patents

Description

l PATENTED .TUNE 18, 1907. T- W.. HEINTZELMN dz J. G. CAMP.

OIL BURNING STEAM BOILER.

AIILIOATIO FILED APR. 20, 1904.

2 SHEETS-SHEET 1.

wnwsases PATBNTED JUNE 18. 1907 T. W. HEINTZELMAN & QT. G. CAMP.

OIL BURNING STEAM BOILER.

APPLIoATIoN FILED APB. zo, 1904.

' 2 SHEETS-SHEET 2.

MKM @My/Q l'o (tt/l w/toni, ift Trl/ay concern:

, [Uniriin sfrA'riis PATENT oiiiiioii.

CAMP, or sAciiAMiiivro,

yOlLg--BURNING STEAM-BOILER.

Specification of Letters Patent.

Patented June 17.8, `1907.

Application iiieii April 20, 1904. seria No. 204.003.

. Be it known that we, TAYLOR W. HEIN'rznLM'ANand JAMES G. CAMP, both of Sacramento, inthe. county of Sacraniei'ito and State of California, have jointlyinvent'ed a `certain new and useful Improvement in Oil-l Burning Steam-Boilers, of which improvenien t the following is a specification.

The object of our invention is to provide moans for effectively and economically gen erating steain,`in boilers of the locomotive, niai'iiie, stationary, and other types, by the combustion. of, liquid hydrocarbons, such means being designed to attain complete combustion of thefuel within the firebox, and the applicatiiiii of the evolved heat to the entire heatingsuiface of ythe firebox, without injury to the tire-box sheets orinducing leaky ilues, and without unduly heating the front end or smoke arch, thereby avoiding the objections heretofore encountered of leaky steam pipes and tubes in front end.

`Afui 'tlier and special object of our inven tion is to enable the brick arch ordinarily employed to be dispensed with, thereby niateriiilly reducing the quantity of brick require( The improvement claimed is hereinafterV tical transif'erse section, on the line a c of Fig. l, and; Fig. 4, a vertical central section,

on an enlarged scale, through the burner.

Our iiiyention is herein exemplified ias eiii bodied in a locomotive boiler of the ordinarv narrow and deep irebox type, but, as will appear upon a consideration of its essential structural and operative features, itis not limited in application to this or any other p special type or forni of steam boiler, being adapted to use in any of thc various construetions which are. provided with a irebox o1' furnace and tubes oit fluesleadiiig therefrom. fl'n the instance herein shown, the inside fire- 1 box, i, is oftheusual forni and isclosed at. its

top by a crown sheet, land surrounded by vertical water spaces' 3, thebottoms of which -are closed'by a inud ring,l4, 'as in ordinaryloi comotive boiler practice. The outside firebox, 5, is connected to the waist, 6, through which the tubes, 7*, pass from the tube sheet, 8, to asinoke box of thensual forni (not shown) at the front end of the boiler.

In the practice of our invention, the inside flirebox, 1, is closed at bottoin 'by a sheet or plate metal boxer casing, 9, which, as it corresponds substantially, in general forni .and location, with the ordinary ash pan of boilers in which solid fuelis used, will be herein descriptively referred to bythat terni. The ash pan, S), is closed at all points except as ,to a central draft' opening or flash hole, 10,- located toward its rear end, and is provid ed, on its bottoni, sides,'and rear, with a firebrick lining, 11, .which extends upwardly for a short distance at its sides, and for a greater distance at its rear, into the inside iirebox, 1. In all oil burning appliances heretofore roposed or used in connection with steam fioilers, so far as our knowledge and inf ornia tion extend, it has `been the practice to introduce a'jet of atomized hydrocarbon into the fireboxnt or near its rear end, or that farther from the tube sheet,- so that the llame from the burner is projected in the saine direction as the traverse of the draft, that is to say, forwardly toward the tube sheet. In constructions of this type, in order to protect the tube sheet and tubes from the direct action of the high heat of the flame, as well as to direct the lient, as far and as uniformly as may he, over the surfaces of the side, back, and crown sheets of the firebox, it has been found necessary to locate a transverse brick arch in the tire box, adjoining, or a short distance in the rear of, the tube sheet, and below the tubes. "I t will be obviousthat the brick arch referred to involves a. material increase of cost, weight, andtime .required fr installa tion and renewalsor repairs, and ,-nioreorer. the deieetion or change of'direction of thi` flame which it effects, has not been found to acconiplish, as fully as is desirable; the. vapplication of its heat with substantial uniformity to the surfaces of the inside firebox.

The leading and-characteristic feature of our invention, which has been developed with the object of not .only dispensing 'with the ordina-ry brick arclifbut also of obtaining` a more uniform 4and effective application of the heat from the burner to the Aheating surfaces of the firebox than has usually 'been attainable When the arch is used, consists m combining, with a'firebox and a lower ash pan floor, a burner which delivers its flame rearwardly, or in opposite. direction'to the draft, above said floor, without obstruction vfrom arches, bridge iv alls, or other analogous members, and a rear draft opening through which a current of air is directed upon the flame, which it upwardly deflects, the flame -'being thereafter caused to travel forwardly, below the crown sheet, to the tubes, by the draft through the same. Under this construction, the hydrocarbon fuel is consumed familiar to those skilled in the art, and which.v

is located in front of the firebox, with its discharge or delivery nozzle, 12a, extending rearwardly and opening thereinto. ln the instance shown, the delivery nozzle passes through an opening in the front sheet of the ash pan, 9, but it will be'obvious that, if`pre ferred, it maybe led through a-hollow stay or sleeve in the lower portion of the front water space, 3, as has been done in a'number of cases by us, with equally satisfactory results in practice. Oil is supplied to the burner through an oil supply pipe, 13, leading from a suitable tank or receptacle, and controlled by a firing valve, 13", which is actuated by a hand lever 13", through connections 14, l5

and 16. preferably heated by means of asuperheater, 17,' through'which the oil supply pipe, 13, passes on its way to the burner, and which is supplied with steam from the boiler through a pipe, 18, controlled by a valve, 19,'and is atomized and discharged into the firebox, by a jet of steam admitted to the burner through a pipe, 20, controlled by a cock, 2l. tailed, construction of the burner and its accessories is not, as above indicated, an essential of our invention, and the same may be varied in the discretion of the skilled constructor, without departure therefrom. 'lhe burner shown is, however, one which is simplc, durable, and inexpensive, and is now successfully operating in regular service.

A blower pipe, 22, controlled by a valve 23, serves to `maintain draft on the lire when the steam is shut oll' and the exhaust steam blastwhich is operative in running,

lis consequently not ell'ecting draft through the tubes. It will be obvious that the brick flooring of the ash pan'is open above the llashhole l0, so to permit free passage of' air through the same, and the flash hole may,

The oil is, as in ordinary practice,4

The de the draught of the exhaust, by which air is 4 drawn in through the flash hole, being in the -opposite direction, .tends to raise the flame slightly in its rearward traverse. Vhen the flame reaches the plane of the rearwardly located -llasli hole, it is deflected upwardly by the entering current of airland thereafter .passes forwardly through the irebox, below the crown sheet, to the tubes. The oil is found, in practice, to be consumed in the inside lirebox, with a very uniform application of heat to .theheating surfaces t ereof,

and the flame produced, which is of a lemon color, is soft and-does not injure the crown sheet or tube sheet, or cause leaky tubes, a substantial advantage having been gained, in this latter particular, over appliances heretofore used in the same service,

`VVe'claim .as our invention and desire to secure by Letters Patent:

` 1. The combination, with a firebox of a locomotive'boiler, of a fire brick lined ash pan extending continuously from the front to the rear .of the firebox, a fire brick lining abutting against the rear wall of the fircbox, a hydrocarbon burner extending into the firebox at ornear the front end thereof and IOO passage of heat from the burner is permitted throughout the length of the iirebox arid a llame is turned back toward the tube sheet` to effect complete combustion.

2. rllie combination, with a lirebox of a locomotive boilero'f an ash pan extending continuously from the front to the rear ol the lirebox, a refractory lining,r on the bottom, sides, and rear of thc ash pan, said lining abutting against the walls of :1nd extending into the iirebox, a hydrocarbon burner cxtending into .the fircbox at or near the front cud thereof and having an uninterrupted discharge therefrom to thc rear lining, and a direct draft'l opening in.thc bottom ol' thc ash pan adjacent to the rear thereof, whereby the passage of heat. from the burner is ermittcd throughout the length of the lire-)ox anda llame is turned back toward the tube sheet to ellcct complete combustion.

. lhe combination, with a firebox ol' a locomotive boiler,lof a lire brick lined ash pan extending continuously from the front to thc rear ol' the llrebox a llire brick 1mm f abutting against the rear wall of the firebox,

having :m lmimerrupml discharge'therepreventing; .thv heatingy notion on the roml'rom to ,said rear iinmfr und a, direct drat ortlon of the hrobox and su )l'yulv ox 'Wen lo o) p I j l h h openmg formed 1n the hottol'n oi the ash pan for complete oombustlon.

adjacent to the rear end thereof which es- TAYLOR W. llllNlf'rEhhlAN. tablshes draft through the irebox to the l JAMES G. CAMP. boiler tubes in opposite direction to the trav- A Witnesses:

@rse of flame from the burnerI thereby turnl I M. D. COFWMAN, ing the Home toward the tub.l sheet without l Y R. A. HEROLD.

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