US1142254A - Superheater. - Google Patents

Description

G. R. HENDERSON '& W. l. GANTLEY.

SUPERHEATER.

(i. R. HENDERSON & W. l. CANTLEY.

SUPERHEATER.

APPLICATIQN FILI-:D sEPT.27 |911.

www@ Patented 31m@ 8,1915.

G. R. HENDERSONL W. l. CANTLEY.

SUPERHEATER.

APPLICATION FILED SEPT. 27, 1911.

Pmnte 5mn@ 8, 1915.

4 SHEETS-SHEET 4.

GEORGE R. HENDERSON AND lVLLllT/I CANTLEY, OF PHILADELPHIA, PENNSYL- VANIA,

ASSIGNES. BY MESNE ASSIGNMENTS, TC LOCOMOT'IYE SUPERHEATER COMPANY, OF WILMINGTON, DELAVBE; li. CORPORATION OF DELAVARE.

Specification of Letters Patent.

` SUPERHEATER.

Patented J une 8, i915.

Application led September 27,1911. Serial No. 651,501.

To all whom it may concern Be it known that We, Gnonon R. HemmusoN and WILLIAM l. CANTLEY, citizens of the United States, residing in Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain Improvements in Superheaters, of which the following is a specification.

This invention relates to certain improve# ments 1n superheaters of the type having .supcrheater elements or pipes Which extend p into the tubes of a boiler.

The invention is particularly adapted lto boilers of the locomotive type, in which one part of the superheater is located in the smoke box and the sl'iperheater eleineu forming the other part extend into the flue tubes of the boiler. 1

One object of this invention is to constructthe superheater so that 'any`of the superheating elements can be removed Without re` moving' any other superheating elements or dismantling 4the superheater and so that,

when one element has been detached, the

I header.

In the accompanying dravvingsz-Figure 1,*1s a longitudinal sectional view of. sufl.-

cient of a locomotive boiler to illustrate our invention, the section beingon the line 1,-1t

I i Fig. 2; Fig. 2, is a transverse sectional view i Fig 8, is aV perspective view `of the 'headset' :one superhetnzgn' element; and, Fig. 9, 17s a on the line 2.-2, Fig. 1v; Fig. 3, is an en-` lar-ged sectional plan view on the line 3 3, Fig. 2; Fig. 1g-is an and View of one of the pipe heads; Fig -5, is a sectional view on the line 575, Fig. '3; Fig 6, is a sectional view on the line 6-G, big. l, showing a portion offthe header with the pipe heads removed; Figi?, is a perspective vien7 of the header:

perspective View ofthe wedge used for attaching the pipe heads to the header.y

A is the shell ofy a locomotive boiler, 1n

vthe present instance having a tube sheet a .separating the main body of the boiler A from the smoke box A2.

a2, are therordinary Hue tubes of the boiler and a', a are flue tubes of greater diameter Ainto which the pipes of the superheater elements extend.

[B is the superheater consistingof a header located in the smoke boxr of the boiler and havingsuperheater elements or circulating pipes z' which extend into the large flue tubes of thel boiler to any extent desired.

A superheater of this particular ty ie is old and our invention, as 'before remarked,

rirrnnr torrione-q relates to a particular construction of superheater, scribe.

D is the header which is located in the smoke boX. This header is made in the manner clearly illustrated in the perspective' view, `Fig. 7, and has an upper manifold d and a' lower manifold d united by alternately disposed hollow columns c, c. The columns c are closed at their upper ends and communicate at vtheir lower ends with the lower manifold d. The alternate columns 0 are closed at their lover ends and com# municate at their upper ends with the upper manifold d. This upper manifold in which We will non7 proceed to deturn communicates, through a pipe C, With Y the pipe Cleading from the steamspace of theboiler. The lower manifold d has an opening d2 at each end and is coupled to the pipes D leading to the steam ports of the cylinders. These pipes may communicate with the pipes leading to the cylinder, either p if through thebottom of the smoke boX or through the side, as desired. Mountedin the space between the alternate columns c, c

are the lpipe heads E to Which the superheat ing elements e'. are connected. The heads are made in the form illustrated in Fig. 8, and the end of the pipes z' are screw threaded, as illustrated in Figf, and are screwed -into the threaded openings c of the heads. The

heads ma v,loe made in a single piece andy completely finished, ythen severed, as illustrated in Fig. 8. y

The openings @With which the pipes communicate connect with transverse openings e', and these openings are in such a position in the header, as illustrated in Fig. 3, as to aline with the vopenings c2, c3.' The openings c2 are in the walls of the columns c, while the openings c3 are in the Walls of the columns o. The other inner ends of the pipes c' are connected by a coupling z" formed, as illustrated in Fig. 1, so that the steam will pass from the columns c, through the `ropenings or passages c3, e ande, then through .a pipe z', coupling i. and return through the other'pipe z' and intp the Ycolumns c; the steam being superheated asit travels through the pipes which extendV into the flue tubes a', asthe products of combustion come vin direct contact with the said pipes. y 6 i The heads of the superheater sections are secured to the main header in the following manner Each head has a projecting rim e2 which extends into one of the openings4 c2 'or c of the main header, and located in an annular groove surrounding the said opening is a coppei` ring h, in the present .in--

heads are spread apart, makes a steam tiglit .joint between the heads and the header.

In order to force the heads apart, We provide a bolt N with a conical wedge M which is adapted to be inserted into a conical opening m; part lof said opening being in Aone head and part inftheother head `as illustrated in Fig..`8. The head n of the bolt/ lgether by the couplings z". The heads E, E

are .then located in one of the channels between the columns, c, c of the header D and the bolt N with the wedge M is passed through the opening mbetween the heads and the nut is placed in position and the i bolt turned so as to force the wedge into the opening, spreading the heads E, E apart and against the columns of the header D. When itis necessary to detach one of these sections the bolt N may be unscrewed from the nut n so as to permit the wedge M to be removed and allowing the heads to come together so that the .projections e2 will clear the columns of the header, after which the two heads with the pipes attached can be readily removed fromI the opening in the header.

In the drawings, we have shown two superheating elements in .each flue tube and we have staggered the heads to which these' i elements are connected, so that the heads of the lower element are attached near the outside of or from the header ,while .the

heads -of -the upper element are attached stance, forming a gasket which, when near the inner or rear side. The location of these heads may be varied without departing from the essential features of the invention.

If it is desired to make a series of four superheating pipes for each pair of heads, then there will-be only one set of`four pipes located in ,each tube, and there. will be-only .one row of heads, which will gered.

In the construction shown in the drawings, if the two s 'uperheater elements are removed from one of the tubes of the boiler then this tube of the boiler may be removed, if necessary, without disturbing the other superheater elements, although, in some instances, it may be desirable to remove more,

than two superheater elements if more freedom for removing the boiler tubes is desired.

The header D is mounted on brackets s, .s secured to each side of the casing of the smoke box section of the boiler, and it is lnot be stagi /azlso suspended by rods s from the top of 'the smoke box section; the header'being shaped as illustrated in Fig. 7 to allow for 'this method of attaching, but it will be un- "derstood that other means for attaching the super-heater to the boiler may be resorted to without departing from the main features of the invention.

v We claim l. The combination in a boiler having a smoke box and tubes, of a superheater having a header mounted in the smoke box and pipes extending from the header into the tubes, the header having a manifold at the top and bottom and a series 'of columns spaced apart, said columns being hollow, the alternate columns connecting withthe upper manifold and the other columns connecting with the lower manifold, with a head on the end of each pipe, said heads being located in thespace between the two 'columns, and

means for forcing the heads apart and against the columns so as to make a steam tight joint between the heads and the columns.

2. The combinationin aboiler, of a series of flue tubes, a superheater having a series of pipes extending into the flue tubes, aheader having a series of spaced-hollow columns an'd upper and low-er manifolds, the alternate cplumns being connected to the upper manifold and the other columns to the lower'manifold, said columns having furthermore openings in their side walls, and the pipeshaving heads located vwithin the space Ibetween the columns and connected to the openings of'said columns, the upper manifold being connected to the'steam space of the boiler and the lower manifold being connected to the stea'm chests of the cylinders.

3. The combination in a superheater, of a locomotive boiler having a smoke box and Hue tubes, a superheater having a header bottom,

Y extending into the flue tubes of located inthe smoke boX ofthe boiler and made of a single casting and having spaced tubular columns, manifolds 'at the top and the upper manifold connecting with alternateV columns and thefother manifold connecting with the other columns, a series of pairs of heads mounted in the space between the columns, means for separating the heads and for forcing them against the walls of the columns, withpipes secured tov each 'head and extending into a flue tube of the boiler, said pipes-being connected at ltheir outei ends so that the steam will circulate in its passage through the superheater. 4. The combination in a-boiler having a smoke box and a series of flue tubes, ofa superheater having a header located in the smoke `box and having vertical hollow columns spaced apart, with upper land lower manifolds, the upper manifold connecting Y with alternate columns and the'lower man1- fold connecting with the other columns, the side `walls of each column h aving openings therein, heads mounted in the space between the columns and arranged to aline with the openings in the walls of the columns, means for securing a circulating pipe attached to each head and the boiler, said circulating pipes being connected so that the steam will circulate therethrough, as it passes from the steam spaceof the boiler to the cylinders. a

5. The combination in a superhe'ater, of a header having columns spaced apart, one for saturated steam and, the other for/.superheated steam, there being an opening in the side of each column, superheatingv pipes, a head secuted to each' pipe, said pipes being connected, one head beingarranged'fin line with an opening in one c" lumn and the other.

line with the openmeans for forcing a'steam the col,-

head being arranged in ing in the x)ther column, the heads apart, andi-rings formin tight joint between the heads an umns.

6. The combination of two hollow columns, the side Walls of each column having openings therein, one of said columns being for saturated steam'and the other for superv heated steam, circulating pipes connected at their outer ends, a head onv each circulating pipe, said heads having openings adapted to aline with the 'openings in a column, a bolt located between the two heads, and a wedge on the bolt, so that on turning theA bolt the wedge will force the heads apart and against the sides of the columns.

T. The combination in a boiler having a smoke box and flue tubes, vof a superheater consisting of a header mede of a series of hollow columns and upper and lower. manifolds, the columns having two sets of lateral openings, said openings .being staggered; two sets of circulating pipes located in each theheads to the columns, and

iue; a head on thefend of each-pipe and located between the columns;.1j1eans for forcingthe .heads of the circulating pipes against the columns ofthe header, thepipes of each set bein@r connected at their outer ends, the heads ol? one, series of}f i'iies being attached to the header near'th'e reargjhereof and connected with one series of openings', and Y the heads of the alternate series of pipes bel ing attached to the header 'near the front thereof andconnected to the other series of openings, whereby a number ofy pipes can be placed close together without one 'set of heads interfering with theother set.

8. The combinationfpin a superheater, of a header having passagesjspaced apart, one for the saturated steam and the other for the superheated steam, the side walls of the header having openings therein, circulating pipes connected at one end Aand having sepa'- rate heads at the other end, said heads being mounted in the passages ofthe header, each 'head having a right angled passage forming communication between the pipe and the passage' ,there beingy a conical opening' formed between the two heads, `la conical Wedge mounted in the Isaid opening, a bolt extending through the wedge, with a nut located between the tubes of adjacent heads whereby they are prevented from turning so that on turning the bolt the wedge will be forced linto the space between the two heads and will cause the heads to bind against the walls of the sections forming the passages. y

9. rlhe combination in a locomotive, of a boiler having a smoke box and a series of iue tubes communicating with the smoke box, one'setbf due tubes being of greater diameter than the other set, a superheater consisting of a header and circulating pipes, the header being mounted in the smoke box -k of the boiler and the circulating pipes extending into the flue tubes of large diameter, the header being made up of a series of hollow columns. and manifolds at the top and bottom, the upper manifold b'eingrconnected to alternate columns and the lower manifold being connected to the other columns, ahead on the inner end of each pipe, means located between the heads for forcing the said heads apart and against the walls of the columns of the header, the outer ends of the pipes being connected, a steam pipe leading from the steam space of the boiler, the Lipper manifold being connected to said steam pipe, and steam pipes leading to the cylinders of the boiler of the locomotive and communicating with the manifold, so that the steam as it comes from the boiler is passed through the circulating pipes, which come in direct contact with the products of combustion passing through the boiler. 10. The combination in a locomotiveboiler having a tube sheet and horizontal flue tubes and also having' a smoke box section, vvith af in their side Walls, and al plurality of superi superheater havingI a header located Within the smoke box in front of the sheet',"and naving through passages',- circulating pipes 'extending into the flue tubes and h avlng heads located'fin the vthrough lpassages and connected laterally with the header, of -means for coupling the heads of the circulating.-

pipes to the'header, ysaid means being accessiblthrough the passages in the header.

11. A header for a superheater made in a single casting and havingspaced hollow' columns, With a manifoldat the top and a mani-- fold at the bottom, the upper'mani'fold being connected with alternate columns and the other manifold being connected Witli the other columns. A

12.' The combination in1 a boiler, of a series of flue tubes, aheader having a plurality of spaced hollow columns and upper and lower manifolds for Wet and superheated steam respectively, thealternate columns bi'ng connected to the upper Amanifold and the other columns to the lower manifold said columns Having, furthermore, openings .heated elements extending into the iue tubes the ends of each element being connected to openings in adjacent columns.

13. The combination in a.boiler, of a series of Hue tubes, an integral cast header...

having opposite manifolds for Wet and sup-i erheated steam respectively andconnected by a series of spaced hollow columns, alternate columns being connected tc on manifold ,and the remaining columns to the other lmanifold said .columns having furthermore, openings in their side Walls, and a plurality of superheater elements extending into the fluetubes the ends of each element .being connected to adjacent Walls of neighboring columns. .y

In testimony whereof, We have` signed our ,names to this specification, in the presence of twol subscribing witnesses.

GEORGE R. HENDERSON. WILLIAM I. CAN'ILE'Y. Witnesses:'

LoUIs H. BENDER, J. H. KERST.

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