US1260443A - Superheater. - Google Patents

Description

UNTTED STATES PATENT OFFICE.

FRANCIS Nt POIGNAN'D, 0F RUTHERFOBD, NEW JJERSEY, ASSIGNOR T0 LOCOMOTIVE BUPERHEATEB COMPANY', 0F NEW YORK, N. Y., A. CORPORATION 0F DELAWARE.

Patented Mal. 26, 1918.

sUPnnHnATEn..

1,260,443, specification of Letters raient.

Application led December 22, 1917. Serial No. 208,471.

To all 'whom it may concern.'

in is a specification.

Be it known that I, FRANCIS Nnsnrr'r PomNAND a subject of the Kin of England, residing at Rutherford, in t` e county of Bergen and State ofNew Jersey, have invented certain new and useful Im rovements in Super-heaters, of which the ollowy invention relates to superheaters, and more particularly to superheaters of the tipe wherein the tubular units making up t e superheater are located in the dues or tubes of a boiler. The ends of the units of this type of superheater are secured to a header or headers, and various ways of se"- curing them have been proposed. .The present invention has for its purpose the provision of improved means of establishing connection between the units and the header. This statement of purpose is to be'taken in its broadest sense, as covering a 'modification or rearrangement of the unit which ma /become necessaxl.

he invention is lly described in the following specification which is to be read in connection with the accomranying drawings forming 'part hereof. o n these drawings, Figure 1 is a sectional view of the front art of a locomotive boiler, on line 1-1 ci) Fig. 2, lookin in the direction indicated b the arrows; ig. 2 is a view on line 2 2 o Fig. 1, in the direction of the arrows; Fig. 3 is a section, on an enlarged scale, on line 3-3 of Fig. 2; Fig. 4 is a section of Fig. 3 on line 4 4. Fig. 5 is a fragmentary sectional view on line 5-5 of Fig. 1 the subheader being raised off its seat; Figs.` 6 to 9 are sectional views, similar to Figs. 3 and 4, of modifications; Figs. 10 to 13 are-sectional views similar to Figs. 1 and 2 of odifications, the views being taken respec vel *on lines lll-10, 11-11, 1212, and 134- 3; Fig. 14 is a front view, part of it in 'section on line 1'1-14 of Fig. 15,v and parts being omitted, of a marinel 'supeiheater accordin to m invention; Fig. 15 is a top view o same, t e dues being shown in central longitudinal section; Figs. 16 and 17 show views, similar to Figs. 14 and 15 of a modileatioln; Fi 18 is a section on line 18-18 ofllfig. 19; ig. 19Ais an enlar ed top'view of tw; the subheaders of ig.

16; Figs. 20 and 21 are sectional views on lines 20-20 and 21-21 respectively of Fi. 16.

eferring first to the form of my device shown in Figs. 1 and 2, reference numeral 1 designates the boiler, 2 the Hue sheet, 3 the filles, and 4 the superheater units. These units, it will be noted, have in the case shown two loops each, looping into separate iues, each. iiue accommodating two loops, but of different units. The ends of these units are welded or otherwise secured into the openings 5 of the subheader 6 (see Figs. 3 and 4). The openings 5 into which the ends of any one unit are secured lie on opposite sides of the partition 7 in subheader 6. Each subheader 6 is secured to the header 8 `bly means of its bolt 9, which passes throng the partition 7 and is screwed into wall 10 of header 8. This wall 10 divides header 8 into two compartments 11 and 12, into one of which, 11, steam is delivered from the boiler, and from the other 12, of which it is carried to the engine. The subheader 6 is kept in such position, by means of the lugs 13 on it and 14 on the header, relative to the header 8 that the two partitions 7 and 10 are always in alinement. The seat between the subheader 6 and the header 8 is spherical, so that a slight movement between the two is possible without a leak resulting.

As will be clear from Fig. 2, the header? is divided into two branches. Only one o these is shown, the other being symmetrical with it. There are shown four subheaders 6 attached to the branch shown nd four units to each subheader, though lvli ently either or both of these arrangeme 'may be varied.V

Figs. 6 and 7 show a variation of the means for securing the subheaders. Instead of the single bolt 9, two bolts 9 and 9b, on o posite sides of the subheaders are em p oyed. They pass through ears 15 and are screwed into the header wall. Luge 13 and 14 are then superiuous.

A still dili'erent means of attachment is shown in Figs. 8 and 9. Here a clamp 16 lies across the outer end of the subheader, and bolts 9 and 9d pass through it near its opposite ends and are screwed into the header Twall. Pins 17, integral with the subheader, and engaging with corresponding openingsl in clamp 1G. keep the snbheadcr from rotating. 5 The operation of the device falls for no lengthy statement, but will be evident. to any one familiar with this art. Saturated steam from the boiler is delivered into chamber 11 of header 8. From this chamber it flows to the chambers of the several subheaders in communication with chamber 11. It leaves these by one set of the openings 5 and flows through the super-heater units 4, Where 1t is superheatcd by the hot gases flowing 15 through the fines 3, returning to the other chambers of the subhcaders, e. those coinmunicating with the chamber 1Q ol" header 8. From 179. the steam is carried to the point where it isv to be used.

In the form of the device illustratedin 'Figs 10 and 11, theconnections by which stcam is carried from chamber 12 of the header 8 are made at the top, instead of at the bottom as in the first form, and instead of two branches, header 8 has four, two only ot' which are shown. The number of units connected with each subheader is half as `great as in the first form; otherwise this modification calls for no further desemption.

Figs. 12 and 13 show a form for Ause 1n small boilers, where only a small number of. lines are to be supplied with units. is a single branch to the header in this case, and two subheaders on each side of it, each with four units supplying four flues. The details of the snbheaders, and the action of the apparatus will be evident from what was said above.

The forms of the device so far described are intended particularly for useJ with boilers of the locomotive type; the forms of Figs. 14 to 17 are for use in return tubular boilers such as are used particularly in marine work. In these eases the flues used are customarily smaller andonly one loop of a unit is put into eaeh flue.

The header of Figs, 14 and 15 has two chambers separated by the wall 18, one of the chambersl for saturated steam to be delivered to the units, the other to receive the .aiperheated steam from the units. The two chambers are. seen to have intel-meshing portions. 19 and t, and it is with two such adjacent portions that each subheader coinmunicates. 'lhe method shown in this figurel for attaching the subite-aders is a little different. from those tlescribed before. The clamps' Qt hear on the tops oi? two adjacent 50 sublieath-rs and are held by central bolts '/'lhc cadihemlerf` have the central partition as before, which here seats on the Wall between spares I9 and 2t).

Inl the.4 modification of Figs. 16 to 21,

Theresaturated steam. is admitted at the nozzle and superhcated steam leaves at 24. The spaces 25 and Q6 eonin'uilnicate freely with space Q7, n hile the spaces '28 and 29 are in free comniunieation with space 30; but 25 and 2li do not directly open into 30, nor do 28 and 29 open directly into 27. `The subheadersv eat-h roxmnunicate with one space 25 or 2U and an adjacent space 28 or 29, their partition wall registering with the correspending partition wall in the header. The connection olE the units corres Onds with that in the previously describe cases; and the operation of this form of the apparatus will be obvious.

It will be clear that the above described forms of my apparatus merely illustrate In invention, and that there are numerous variations and modifications possible. These, in as far as they are within the spirit of the subjoined claims, I regard as part of my invention. I.

What I claim is 1. In apparatus of the class described, a header having a partition wall and an opening divided by said partition wall, a subheader of cylindrical shape having a. diametrical partition wall, said subheader being closed at one end and open at the other, a bolt passing longitudinally through the partition wall of the subheader and screwed into the partition Wall of the header and holding` the subheader to the header, the two partition walls registering, the engaging surfaces of the header and subheader being spherical.

2. In apparatus of the class described, the combination of a header havin a partition wall and a circular opening iametrically dividel by said wall; a, cylindrical subheade having a diametrical partition Wall, means to hold said subheader to said header in such position that the two partition walls register. the contacting points of the header and sublieader and their. partition walls l ing in a spherical surface, allowing sli t angular movements of the Subheader 1', ntive to the header.

3. l'n apparatus of the class described, the combination of a header having a partition wall and a circular opening diametrieally divided by said wall, a cylindrical subheader having a diametrical partition wall and having one end closed and the other open, a single bolt holding the header to the snhheader in such position that the partition walls register, the contacting points of the header and subheader and their partition walls lying in a s, 'e'f'ieal surface, a superheater unit secured to the. subheader its ends opening respectively into the two chambers o1 the subheader.

4. In apparatus of the Yclass described, the combination of a. header, a, partition means wall in said header, the header having a circular opening bisected by said partition wall, a cylindrical subheader with a partition bisecting it diametrically,thesubheader 5 being ,openat one end and closed atthe other, means to hold the header and subheader in engagement'in such 'manner that th partition Walls register and the interior spaces on the two sides of the subheader partition communicate respectively with the'two spaces in the header, the contacting points of the header, subheader and partitions lying in a spherical surface, and a plurality of superheater units, one end of each heinz; Welded into and openin into one of the spaces in the subheader, t e other end being Welded into and opening into the other.

FRANCIS N. POIGNAND.

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