US1647476A - Means for heating boiler feed water - Google Patents

Description

Nov. 1, 1927.

B. R. SKINNER MEANS FOR HEATING BOiLER FEED WATER Filed June 10, 1922 3 Sheets-Sheet 1.

' v INVENTORI:

A TTOkNEY.

Nov. 1, 1927.

' 1,647,476 B. R. SKINNER MEANS FOR HEATING BOILER FEED WATER Filed June 10, 1922 3 Sheets-Sheet 3 I I I I 1 I f I H II" n I" v, INVEN TOR: 36 l J2 fiwm/ 1 I I ATTORNEY.

Patented Nov.'1,1927. I 4

rr r

Benn n. sninnnn, or ABERDEEN, son'rn- DAKOTA.

MEANS FUR EEATING' BOILER FEED lVATER,

Application filed June 10, N22, Serial No, 567,298,

steam-torheatingthe feed-Water required by steam-boilers, and to advantageously use' the heat of locomotive boilers in raising the tom- 1 I perature of the feed-water; this invention relating generally to the class of means for v heating vboiler feed-waterdescribed in Letters Patent #1',8 l1,44-3 granted to me on May25, 1920. a d An object otthe invention isto eilect the utmost saving in the consumption of vfuel required for heating water or for converting Water into steam, morepar'ticularly in locomotive boilers. i

Anotherobject is to provide improved means for supplying a locomotive boiler with vwater atathe highest'temperature,possible under the existing'conditions of operation, in order that the water temperature may be raised in, the boiler by the furnace heat to the required degree with the minimum consump- 1 tion of fuel,and so that steam may be rapidly and constantly generated freely, and with out over-taxin gthe steam-producing ability of the boiler andits fire-box Wit-hconsequent Waste of fuel due to the common evil of drawing unconsumed fuel frointhe fire-box and ejecting it from' the smoke-stack.

'A further object is to provide improved means for utilizing exhaust steam to heat locomotive boiler feed-water, which shall be so constructed and arranged as to tend to effect steady draft through the fire-box and the boiler without'sharp blasts from the engine exhaust nozzle.- A still further objeotis to provide an im proved primary heater and of such construc- I tion as to be adapted to be located and car-' ried in an advantageous position where its operation maybe fav-orablyoinfiuenced by 7 close association with a locomotive boiler and also be protected by reason ofits position fromthe cooling effects of severely cold winds which adversely affect feed-water heaters; Which primary heatershall be of simple and efiicient construction and adaptred to be easily cleaned and repaired, and

which may be readily connect-ed advantageously with a main heater which may be arranged in the. smoke-box of the locomotiveboiler. a

With the abovementi necl other broken away, to Which theinvention is thereof; Fig. 5 is an enlarged elevationof engine cylinders- 5 and 6, an engine frame? being connected to thesaddleandbeing supjects in view, the invention consists in an improved primary heater and .in thenovel arrangement thereof in association with a locomotive and in connection with a main heater; .and,the invention consists also further in various novel partsand features, and in the combinations and arrangements ,of parts, as hereinafterparticularly described anjd'further defined in the accompanying claims.- Referring to the dra\vings,Figure 1 is a fragmentary right-hand side sectional elevation of a railway locomotive, partially applied and illustrating the preferred arrangement .ot-the primary heater, and its; connection with its various otherieatures or elements of the structure; 2 isan ine verted plan of the locomotive boilerand the improved primary heater andarrangement thereof, portions ofthelocomotive being in section; Fig. 3 is a vertical longitudinal sec 7 tionot' the main structure of the primary heaterapproximately on the line IIIIII intFig. 2, on an enlarged scale; Fig.4 is a fragmentary horizontal section,.on a further enlarged scale, of the 'mainstructur'e of the primary heater, approximately c entrally' -,v

the primary heater, pipes connected there-Q Withbeing in section; Fig. 6 is a transverse section, approximately on the line VI.VI inFig. 4L; and, Fig. 7' is a transverse section approximately on-- the line VIIVII in Fig.4. a. Similar reference characters in the different figuresof the drawings'indicate corresponding or like elements or features of construction herein referred to in detail.

Portions of. a modern locomotive with which the invention is advantageously ap- 1 plied are described'as being sufficienttofan'l understanding of the invention and its practica'l applicatiomthe numeral 1 indicating the steam-boiler; having a smoke-box 2 pro-;

vided with a smoke-stackS, a saddle lbeing, secured tothe smoke-box and supporting the.

ported on driving axles 8 and9 and usually, otheraxles., brace plates 10.and 11, jand insome cases another braceplate 11 beingse-Q cured to the frameand to the lower portion ll fl eat inyentionthehrace plates have each otthe boiler, For the purpose of theipressuitable opening therein and a flange creel,

'lar 12 extending about the opening. The

' locomotive, as will be understood, is provided with injectors or pumps discharging into a Y 13 to which a branch-pipe or feed I chambers, on the outside of the water-chamber, generally similar to the 'main heater shown in said pat-en'ha branch-pipe be ing connected with the water-chamber and with a check valve 21 connected to the boiler. The steam-chambers of the main heater when two are provided have exhaust- pipes 22 and 23 connected thereto and leading to the engine exhaust-pipe 24, as is understood, being arranged so as to direct the exhaust steam intothesmoke-stack with continuous flow during operation of the locomotive to assist .in creating v a draft through the boiler.

\Vithout superfluous illustration and description it will be understood that the saddle 4 has two walls 25 and 26 to form an exhaust-channel to conduct exhaust steam from one cylinder to the engine exhaust pipe and two walls 27 and23 to form another eX- haust-channel to conduct steamfrom the opposite cylinder to the exhaust pipe. According to the approved practice a steampipe'29 is connected with the forward wall 26 of onefof the exhaust-channels to conduct exhaust steam to one of the steam-chambers of the main heater, and another steam-pipe is connected. with the forward wall 28 of the opposite exhaust-channel to conduct exhaust steam to the opposite steam-chamber of the main heater, so that the stem-chambers of the main heater may be supplied from the exhaust-channels in which during operation] of the locomotive there is sufficient back pressure caused by the exhaust pipe 24 to cause exhauststeam toenter the pipes. I

Details of the connections of the pipes. 29 and 30 with the steam-chambers of the main heater are not shown, any suitable connectionbeing permissible. The exhaustpipe 24 obviously is of the tapered type commonly provided for a well-known purpose.

The improved primary heater has a shell or enclosing wall to which the exhaust pipe 17 is connected, and the shell preferably is rectangular in cross-section and comprises a fiat bottom 31 on'which are side walls 32 and 33 to which a flat top 34 is connected. The shell is arranged 1n and extends through the collars 12 and is supported therebyso as traction of the shell. One end of theshell has a flange and the opposite end a similar flange 3hiizred thereto. The rearward .or inlet end of the heater is provided with a distributing-chest which preferably com- .prlses a header 3? arranged against the Preferably a drain pipe 44 is connect-ed to,

the cap through which water may be drawn from the distriliiuting-chest and preferably is provided with a stop-cock 45. The opposite end of the shell is provided with an apertured head 46 that is secured to the flange 36 by means of bolts 47, the head having a packing-box 48 thereon which has a suitablev packing-gland 49. The shell has" a combining-chamber arranged. therein adjacent to the head and'comprising a body portion 50 having an inner apertured head 51. therein and a tapered end portion 52 extending towards the head 46. The body POP tion 50 is of suitable dimensions to be steadied against the side walls of the shell while resting on the bottom thereof, and has suitable channels 53 in its bottom and its top and also in its sidesand has also rounded to permit longitudinal eiipansion'and concorners 54 providing ample passages for steam and water of condensation to circulate in the shell and past the combining-chamber. A suitable number of heater tubes are arranged in the shell which constitutes a heating-chamber, there being preferably a lower series of heater tubes 55 and an upper series of tubes 56, one end of each of the tubes being secured in the header-37 so as to receive water from the distributing-chest, the opposite end of each tube being secured in the apertures in the head .51 of the combining-chamber wall so as to discharge the water into the combining-chamber. An extension feedipe 57 is connected to the smaller end of the combining-chamber and extends throughthepacking bm: 48 and also through a suitable opening in the saddle and is connected with the water-chamber of the main heater, as will be understood. hen the main heater is arrangec as a complete unit within the sn'ioke-box the pipes 29. 30, and 57 extend thereto through suitable openings in the lower portion of the smoke bor; wall. An exhaust steam-pipe 58 is suitably connected with the heating-chamber, being preferably secured in the head 46 and it preferably has a stop-cock 59 connected thereto which'is always open when the heater and supported by the braces and having a *distributing-chest on the rearward end and alsoa combining-chamber.slidable within the shell adjacent to the opposite forward end thereof, the combining-chamber having ex ternal longitudinal channels which with the shell form passages for leading steam past the combining-chamber, a head secured to the forward end of the shell, a feed-pipe connected with the distributing-chest, a plu- V rality of heater tubes fixedly connected with the distributing-chest and the combiningchamber, an extension feed-pipe connected with the combiningchamber and extending through said head and having connection with the boiler, and a branched steam-supplying pipe connected with said head.

5. The combination, with theboiler and the saddle of the locomotive, the saddle hav ingtwo exhaust-channels therein, of a trans versely rectangular heater shell supported under the boiler adjacent thereto behind V the saddle and having a distributing-chest on the rearward end thereof, a head secured to the opposite forward end of the shell, a steam-pipe connectedwith said head and having branches connected each with an 'exhaust-channel, acombining-chamber movably guided in the shell in proximity to said head and havin external lon itudinalchan nels which with the shell form passages to lead steam from the steam-pipe past the combining-chamber, a feed-pipe connected with the distributing-chest, a plurality of 35 heater tubes fixedly connected with the distribut-ing-chest and the combining-chamber,

arranged in the shell in proximity to said head and having longitudinal channels in the outer portions thereof which with the wall of the shell form passages to leadsteam from the steam-pipe to the space between the headerand the combining-chamber, the combining-chamber having an apertured inner end and a tapered outer end, thevouter end extending toward said head, a plurality of heater tubes in'the shell and secured at one end thereof in the header, the opposite ends of the tubes being secured in the apertures of the inner end of the combining chamber, a brace plate arranged between said tubes, an extension feed-pipe connected to the tapered end of said combining-chamber and extendingthrough said packing box,- two branch steam-pipes connected to said exhaust steam-pipe, a cap secured to said a header, and a feed-pipe connected to thecapf In testimony whereof, I afiix my signature.

'BURR R. YSKINNER.

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