US1653028A - Superheater - Google Patents

Description

Dec. zo, 1927.: 1,653,028- I EWHITTINGTON ET AL,

sUPERHEAT-ER Fired June 2o. 1921 e, sheets-sheet 1 Dec. 2o, 1927.

L. E. WHITTINGTON ET AL vSUPERHEATER A Filed June 20.1921

6 Sheets-Sheet 2 Dec. 2o, 1927. 1,653,028

' L. E. WHITTINGTON ETL` SUPRHEATER Filed June 2o.' 1921' e sheets-sheet' 5 L. E. WHITTINGTON ET AL SUPERHEATER Filed, June 20, 1921 6 Sheets-Sheet 6 Fatented @en 2id, H2225?.

@man eras i :intatta LUS E. 'WHITTINGTQN AND WEED 4lJOIBIiISolal', OF SILVIS, mms.

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Application led .Tune 20,

This invention relates to a .superheater .for locomotive engines and partlcularlyto 1mprovements in the header construction for the same. One object is to provide an ar-` rangement whereby only superheated s team is throttled. Another object is to provide a construction wherein the superheater elements are always filled with steam. Another Aobject is to obviate the need ofa damper.

Other objects will appear from. time to time i throughout the specification and claims.

taken on line 3 3 ofFig. 2;

`The invention is illustrated more or lessv diagrammatically in the accompanying drawings, Wherein- Figure l is a vertical-cross section through a -locomotive boiler taken just in front of the header; v

Fig. 2 is a vertical longitudinalvsection on an enlargedscale taken on line 2-1-2 of Fia 1;' Fig. 3 is a section on an enlarged scale Fig. 4 is a horizontal section taken on line 4.-4 of Fig. 3; v

Fig. 5 is a sectionaldetail of the valve taken on line 5f5 of Fig. 2;

. Fig. 6 is a aietail sectional View lof the valve taken on line 5-6 of Fig. 2';

Fig. 7 is a horizontal section of the valve taken on line 7 7 of Fig. 55 Fig. 8 is a horizontal section of the valve on line 8-8 of Fig 6;

Fig. 9 is a plan-view of the header; Fig. l() is a diagrammaticshowing of the su erheater elements;

ig. 11 is a section on an enlarged scale 'taken on lline 11-*11 of Fig. 10;

Fig. 12 is asection on an enlarged `scale taken on line 12-12 vof Fig. 2; F Figure 13 is a section .on line 113-13 of Like parts are designated by like characters throughout.

' A is the shell of a locomotive boiler.A B is an end plate of the boiler.l B B are small ues extending through the boiler and terminating at the plate B through which theypass. B2 B2 are a plurality of largetlnes within which the super-heater elements are y illustratedin detail. D D? are'outlets from 1921.' Serial. N0.479,167. y

the header to the boiler. Water in passing through the header is heated before it passes"4 to the boiler. ,Da D3 are steam outlets from the headerl to the engine cylinders,not here shown in detail as they form no part of the present lnvention. D4 lis a valve dome on the top of the header within which is located the throttling valve, Which is carried on the vertical shaft D upon which is mounted the rack D, D7 is a pinion carried on aV shaft D8 which is supported at bearings D9 D9 and adapted to be rotated by means of the f link D1?, the details of which are not here shown as'they form no part of the present invention. D11 is an outlet pipe for super'- 4heated steam which passes back along the' locomotive to any suitable connection Where it may be applled to run a compressor, oper- I ate a turbine generator, used `for heating the train, or any other desiredpurposes.

The construction of the header itself WillA now be described. The header proper is div thel header. Saturated steam entering this channel goes down into the Wells E3 E3 of which there are 6, althoughv this number could of course be considerably varied. The

` Wells E8 as shown in Fig. 4`are open from above throughout approximately one-third f of their length. When the steam has entered these Wells, it entirely fills them and passes down through the `perforation's E* E4l in allof the Wells, through which perforations the's'uperheater elements C are connected.

Through these elements it circulates back .and `forth in the Hue vand finally after being superheated, it comes into the Wells El5 which are spaced between the Wells E3. From these 'Wells it rises through the openings in the' center through the upper Walls intothe 'longitudinal channel Ee which is provided at its center with the enlarged vchamber E7 Within which is located the throttling valve.

Feed Water enters tl'ie'header by meansr of thepipes D D Which communicate with' the longitudinal channel F across the front los of the header, thence through the perforations F F between the steam Wells-Ea E Water passes into Athe longitudinal channel header. From this channel it passes through and upward through the bend the pipes D2 D2 vinto lthe boiler. "lhus the water is heated by means of the steain before it enters the boiler.

We shall now describe the` course of the y steam through the superheater elements proper. This is shown-in .detail in Figs. 10 and 1l. Saturated steam coming'froin the header enters the superheater element through the pipe C moving in the direction of the arrow.. lt moves thence along the ipe to 2 to the pipe C3 and thence back to the end of that pi e to the connection Cf and into the pipe 5 to the end oit that pipe to the connection C", and into the pipe C", *and` thence back to the connection 08 and into the ipe C and forward through that pipe to' t e connection C10 and into the'pipe (31.1., C12 which is a continuation oit the pipe C and so'into the superheated steam well of the header.. rlhus vvthesaturated stealn `passes six times the ,length ofthe boiler 'lue, being 'superlieated in the process and nally returns to the header.- p

. The detail of the connection of the superheater unitsto the door oit the header `will nowv be described as particularly illustrated in Fig. 12. The pipe C leads trom-the door ofA the saturated steam well E3 and the pipe Q12 returns to the floor of the superheated steam Well E5. Each of the pipes terminates in the nipple C13 which lits into Van opening in the bottom ot the steam well.1 -li'nbragcing each ot' the pipes and bearing upon the washers C is the yoke C15 which is secured to the floor of the header-by means of the bolt C and nut C17. The tightening ot this nut and bolt draws the yolre against the bottom ot the header and thus tastens and holds' th-e superheater pipes in position.

The constructionA and operation yot the valve will now be described. rlhe valve elements are located within the dome Dt and Vare mounted upon the shaft D5. As shown in all the figures the valve is closed. Superheated steam entersthe valve through a :ouinu ber ot orts two of them' Gr G located ini- 7 mediately 'beneath the valve.' and two other ports G G about the upper part ot the valve and leading from the chamber lrt?.

| o i Outlet ports tutti are located towards the inid- -dle ot the valve and in :trent oit its axis. When the valve is raised so that the passage between the inlet and outlet ports' is no lonoer t u m blocked by the valve discs Ct-9 GA super heated steam enters the valve through thev lower and upper inlet ports G., Gf respec tively towards the rear oit the valve and passes thence through the center oi '.he valve and out through the outlet ports G 'ton y i ward the middle and et the 1 ive, into a third longitudinal channel or chamber its end and through the connection,

eh amb er engine cylinders.

rllhe throttle mechanism tor operating the throttle valve is adapted tor use with a.

variety of diderent types of locomotives. In some cases it is necessary tolocate this ineclif.a anism lower than as shown. For this urpose the two domes H are provided.

point in the circumference ot' the boiler.

llhe bearings D9 D9 for the'shaiit Dg are secured to the semispherical surfaces ot the .domes lol. VWhere they domes are located 'lower on the boiler than as shown the bearingswould be locatedv higher on 'the dome and a great variety of adjustment is thus made possible. y

rllhe idea is that the domes lil maybe posi# tioned upon the boiler surfaces according to the way the .designer desires and the bearings for the throttle shaftinay be located on the lface ot the dome dependent upon thel hey may be located opposite each other at` any S?. 1

tially constant boiler pressure andtlius there f is practically no expansion or contraction of l these elements and their life is thus rendered considerably longer as wear upon them is greatly reduced. As the superheater elements are constantly full of steam .at'con-y stant pressure, it is not necessary, as is usually the case, to vprovide a closure for the boiler dues, and thus no damper is necessary in connection with this invention..

Although we have shown an operative de vice, still it will` "be obvious that many changes might be inade both in size, shape and larrai'igeinent ot parts without departiiigl materially 'from the spirit oiE our intention,

Vand we wish therefore that our drawings be regarded as in a sense diagrammatic;

rlhe use and operation of our invention 'are as'tellows: Water coines into the channel along the front ot the `header and passes thence ben ldd tween the steam wells into the channel v 'along the back ot the header and so cornes through 'them and back f int-o the header through superneated wells and into the .LY L one top aan aeaaoas valve is open the superheated steam vof course fheated steam chambers within said header, a plurality-of feedwater chambers within f said header and a valve chamber within said header, said superheater elements connected each at one end to a saturated steam chamber and at the other end to a superheated steam chamber, said valve-chamber in communication with said superheated steam' chambers and so constructed as constantly to be surrounded by superheatedsteam, said plurality of feed Water chambers lying in partA between said steam chambers.

2. The combination with a vboiler of a header adapted for. use in connection with superheater assemblies comprising a plus rality of alternating saturated steam and superheated steamchambers and having a passage in communication with said superheated steam chamber, a plurality of feed water passages located intermediate said 'saturated and superheatedsteam chambers and a thrott-ling valve in part Withinsaid passage, all the parts comprising the throttling valve assembly and especially including the movable valve elements, the h0us ing walls and the .valve seats being entirely surrounded at all times by superheated steam and being entirely located within the connes and removed from the walls of the lo-I comotive smoke box.

3. The combination with a boiler of a ieader adapted for use in connection with superhea-tcr assemblies comprising a plurality of alternating saturated steam and superhea-ted steam chambers and having a passage in communication with said superheated steam chamber and a throttling valve in part within said passage, and a feed Water heater within said header, comprising a plurality of laterally extending passages positioned between said saturated and superheated steam chambers. y y

4. The combination with a boiler of a header adapted `for use in connection with superheater assemblies comprising a plurality of alternatingsaturated steam and superheated steam chambers and having a passage in communication with said superheated steam chamber and a tlirottling valve in part within said passage, and feed Water chambers extending laterally and longitudi- -Ilally of said header and connections between said feed water chambers through said header and' between `said steam chambers and an outlet from said feed Water chambers into said boiler. i

5. A locomotive superheater and feed water heater, comprising a header having saturated steam chambers and superheated steam chambers and4 passages for reed water located between. thel said chambers, whereby the opposite walls of the water passages areeXposed-to direct action of both the saturated steam and the supierheated steam, and superheater elementsconnected with and intermediate of the saturated steam chambers and the superheated steamchambers of the header.

6. lA locomotive superheater and feed water heater, comprisingin combination a. body portion, a horizontal partition member in said body portion, dividing it into up per and lower sectionsfand vertical partitions forming a plurality of alternately p0- sitioned saturated and superheated steam chambers in said body on one of said sections, and a plurality of feed water passages extending laterally between said chambers for exposing the feed Water to the direct action ofthe superheated steam.

7. A combined locomotive superheater and feed water heater, comprising a body por-- tion, a partition located in said body portion, dividing it into upper and lower sections, a plurality of saturatedand superheated steam chambers located Within said body on one ofsaid levels, each chamber being separated from an adjacent chamber by a wall member, and a plurality of passages extending through said wall members for J une, 1921.

WEED ROBINSON.

Illinois, this 4. day of

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