US1900445A - Water cooled furnace wall - Google Patents

Description

March 7, 1933. D. syJAcOBUs ET AL.

WATER COOIJED FURNACE `WALL Original Filed Aug. 27. 1926 lllll'llllulllllll llllllllllll I .IMI

M4/ifm mvENToRs BY v XQM-CATTORNEYS Patented 7, 1933 y UNITED STATES APATEN'P oFFlcI-zl DAVID S. JACOBUS, 0F HONTCLAIB, AND HOWARD m3, OF WESTFIELD, NEW JERSEY, .ASSIGNOM BY IESNE ASSIGNIENTB, T0 FULLER LEBIG-H OQMPANY, A.

oonroaaTIoN or DELAWARE WATm COOLED FUBNACE WALL Application led August 27, 1928, Serial No. 131,872. Renewed April B, 1831.

This invention relates to a furnace wall particularly adapted for boilers, in which water tubes connected to the water spaces of the boiler or other suitable source ofsupply of cooling iuid constitutes a portion'of the furnace wall and serves to supporter aid in supporting the remainder of the wall. The invention will be best understood from the description in connection with the accompanying drawing, in which Fig. 1 -i`s a p erspective view, partly broken away, showing the tubes and the supporting means; Fig. 2 is a section along the line 22 of Fig. 1; Figs. 3, 4 and 5 are similar `views showing modiiications; Fig. 6 is a vertical section through a portion of a wall embodying the invention; and Fig. 7 is a section on the line vertical slots 15 on each side o the flat 7 7 of Fig. 1. v s

In the illustrative embodiment, reference character 10 indicates water tubes of a boiler that may be connected to the circulating system of a boiler'. As indicated in Fig. 6, these tubes 10 maybe connected to headers 25 and 26, from which header connections are made to the circulating system of the boiler in the well-known manner, which is not necessary to describe or illustrate. The tubes 10 constitute a portion of the furnace wall and serve to support certain of the wall forming ele-- ments, as will be described below. These tubes are shown in Fig. 6 as being bent near their upper ends so as to extend to the outside of the furnace wall. These tubes are also disposed with their axes in substantially the same plane and when we refer herein to the plane of the tubes it will be understood that we mean the plane referred to above and which embraces the axes of the tubes.

Metallic or tile holding members are placed between the tubes k10. Each one of these holding members comprises a horizontal flat portion or plate 11 and a vertical flat portion or plate 13 integral with the ortion 11 and extending at substantially rig t angles to the plane of the tubes. The portion 11 has a somewhat restricted or narrow neck portion between its ends, and enlarged end portions that are rounded, as shown Vat 12, to fit against the tubes 10.V The vertical flat portion 13 is disposed at right angles to the at portion 11,

and the flat ortion 13 4extends beyond the edge of the at portion 11 on one side and terminates ina bulbed edge 14. The holding members, comprising the Hat portions 11 and A13 at right angles to each other, can be in- 55 stalled between the tubes 10 by tilting the same so that the portion 11 is inclined, whereupon the plate 11 can be inserted between the tubes and then turned into a horizontal position, with 'its' concave ends 12 resting 60 against the outside surfaces of adjacent tubes, and with the fiat portion 13 in a vertical plane.

A plurality of these holding members may thus be installed in superposed relation, so that the flat portions 13 rest upon and sustain 65 each other in a vertical row.

The vertical portions 13 are rovided with ortion 11. These slots 15 are wide enoug to accommodate rectangular-ly shaped fiat plates '16 disposed in the plane of the tubes and that are long enough to extend across the space between the tubes 10 and wide enough to extend from the dat portion 11 to the end of the slot 15, or wide enough, so that the upper edge thereof as shown at 16, will eX-' tend from such a slot in one vertical portion 13 into a corresponding slot in the lower portion 13 of the next superposed holding member, thus closing the space between two tubes 10 from the horizontal portion 11 of one holding member to the corresponding portion of the nextl holding member.

After the holding members have been installed between the tubes 10 with the at 85 plates 16 in place, tile or refractory material 18 is installed on the furnace side of the wall, as shown in Fig. 2, this tile restin u on and being supported by the edges of t e at r, tions 11, and preferably being .ap 1i in plastic formso as to be substantially continuous monolithic between tubes and in a 'vertical direction, aslainly shown in Fig. 7. The tubes are parta y exposed, and the result is, therefore, a wall formed of alternate sections of water-cooled surfaces andrefractory surfaces, with the 'refractory surfaces held in position by the water-cooled ones, through themediumof-fth,;h01ding members. Insulatin'g materialtl') is?` so T09 zontal portions 11 of t the vertical Iportions 13 ofthe ho 10 sorb heat that would otherwise reach this material, such absorption being assisted by the holding members contacting with the water tubes. 'We may provide two bulbed portions .on

ding members, as shown in Fig. 3, so that two layers 19 and 20 bf insulatin material may be applied to form `the outsi e of the wall, the layer 20 being made of less refractory material. V20 and, therefore, cheaper than the la er 19 thus decreasing the costy of the wa Instead of having two bulbed ortions on the members 13, we may depen upon the adhesiveness between the insulating layers 19 and 20 to retain the layer 20`in place, as

illustrated in Fig. 4 of the drawin In the modification shown in Isig. 5 the horizontal portion 11 of each holding member between the tubes 10 is made so that the; same can be inserted between the tubes without tilting, although their ends are rounded o'ut fto fit the tubes. The slots 1 5. in this modification' are made in line with the outer ed e of'the portion 11', so that the flat plates 16 are almost in line with the outer edges of the tubes 10. In order to retain the holding members in place when made as just described, small pieces of steel 17 may be welded to the tubes 10 in such positions as to hold '4 the plates 16 in contact with the tubes. In

this view, we also show a modification for holding the insulating layer 20 in place, without requiring the vertical members 13 to project outwardly into the insulating layer 20. This means comprises wire gauze or thin metal 21, which may be fastened to the A bulbed parts of the vertical rtions 13 'in any convenient manner, so t at the inter mediate rtions will -become embeddedV in 59 the ins ating material 20 and retain the same in place.

As illustrated in the drawing, portions of the water tubes 10 areex-posed to radiant heat. It will. be obvious, however, that the tile u 18 ma be made thicker and extend farther I aroun the tubes 10, until the ed thereof contact with ,each other,-thus shielding the tubes 10` from the radiant heat of the furnace if desired. When it becomes necessary to 6 remove 'a tube 10 for repair, this canvbe done with the modification shown in Figs. 1 to 4 by swfirst removing-the tile and then cutting or breaking offthe' edges of theliorizontalportions 11A of the holding members that lie next ing the tubes without .disturbing the layers of insulating material. After removal of an old tube a new tube canbe inserted in its place. Theholdi'ng members still support the refractory and insulation, as this has not been materially disturbed by the foregoing operation.. If preferred, the tubes may be replaced by removing the refractory and insu ation, but preferably the first described method is followed when renewing the tubes. In the modication shown in Fig. l5, it is not necessary to cut or break o any `portion of the holding members, as the saine can be removed merely b taking off the tile and then cuttin away t e pieces of steel 17 which holdt evertical lates`16 in lace.

Fig. 6 shows t e tubes 10 olding the insulating layers 19 and 2O of the wall in place as above described, and these tubes are bent at their upper ends to pass through holesl in the tile 22 and holes through the portion 23 of the wall that is supported upon I-beams 24, and' enter the header 26. The holes A through the' portion 23A throu h which the tubes 10 pass are large enoug toprovide room for the tubes t'o move due toI ex ansion and contraction. With one of the eaders 25 or 26 fixed in position., and the other free to move when the tubes ex and-or contract, a sliding joint is provided tween the tube cooledv portion of the wall and another portion of the same thus providing for relative motion between the two portions.

While we have shown theinvention as embodied ina specific form, i is to be understood that various changes in details may be made without de arting from the scope of .the invention, an we therefore do not intend to limit ourselves claims'.

.We claim: l 1. 'A furnace wall com rising parallel water tubes, and su ports or insulating material between sai tubes, each support comprisin a horizontal and a vertical plate, one exten ing at right angles to the tubes and the other parallel thereto and spaced thereexcept by the appended frm. y

2. A furnace wall comprising water tubes,

' and supports for insulating material betweenv .said tubes, said horisu ports comprisin hrt i and zontal plates that between said tu 4vertical members holding said plates in spaced'relationto each other.t l

3. A furnace wall com rising vertical water tubes, supports for insulating material between said tubes, said supports comprising' horizontal'plates that fit between said tubes,

and vertical 4plates that extend beyond one edge of each ofsaid horizontal plates and aredisposed between adjacent tubes and spaced therefrom. j

4. A furnace wall comprising 'vertical water tubes, supports for insulating' material 65 to the inside of the furnace, and then removybetween said tubes, said supports comprising iasA horizontal plates that t between said tubes, and vertical plates whose vertical edges contact with adjacent tubes.

5. A furnace wall comprising water tubes, supports for insulating material between said tubes, said supports comprising horizontal plates that fit between said tubes, vertical plates that contact with said tubes, and vertical plates at right angles to said last named plates.

6. A wall supporting member comprising a horizontal plate with concave ends and a vertical plate intersecting the horizontal plate intermediate its ends,

7. A wall supporting member comprising a horizontal plate with concave ends adapted to engage wall tubes, and a vertical plate, Said vertical plate having a slot therein adapted to receive a second vertical plate.

8. A wall supporting member comprising a horizontal plate with concave ends ada ted to engage wall tubes, and a vertical p ate, said vertical plate having a slot therein, and a second vertical plate in said slot.

9. A wall supporting member comprising a horizontal plate with concave ends adapted to engage wall tubes,'and a vertical plate, said vertical plate having a bulbed ortion.

10. A furnace wall comprising a p urality'A of vertical tubes, supporting members disposed between said tubes and comprising orizontally disposed spaced plates, and vertical plates having their edges substantially in contact with the tubes.

l1. A furnace wall comprising a plurality of vertical tubes, a plurality of horizontal plates spaced from each other and disposedof tubes with their axes in substantially the same plane, a plurality of horizontal plates disposed between said tubes and spaced apart, a plurality of vertical plates perpendicular to the lane of the tubes and disposed between the tu es, and a plurality of vertical plates also disposed between the tubes substantially parallel to the plane thereof, said first named vertical plates having projections thereon for the purpose set forth.

14. A furnace wall comprising a plurality of parallel tubes spaced apart, and supporting members disposed between said tubes,

each membercomprising plates disposed in three planesat right angles to each other.

15. A furnace Wall comprising a lplurality of parallel tubes spacedI apart, and supporting members disposed/f between said tubes, each member comprising plates disposed in threel planes at right angles to each other, one of said plates being disposed transversely to the length ofthe tubes and having its edges adjacent the tubes formed with concave portions adapted to engage the tubes.

16. A furnace wall comprising a row of tubes disposed substantially parallel to each n other, a layer of refractory material and a layer of insulating material, a plate separating said layers, means carried by each plate to hold both layers in'position with respect to the plate, and means engagingthe tubes to hold the plate in position.

17. A furnace wall comprising a row. of

spaced substantially parallel vertically eX- tending tubes, a closure forthe space between two adjoining tubes and formed in sections, plates forming shelves on said sections extending inwardly towards the interior of the furnace and transversely of said tubes, a linl ing supported by said shelves, and means for holdi said sections in place.

. 18. furnace wall comprising a row of spaced substantially parallel vertically extending tubes, a closure for the space between the adjoining tubes, plates forming shelves disposed on said closure and extending in,-

wardly towards the interior` of the furnace and transversely of said tubes, a lining supported by said shelves, and means for holding said closure in place.

19. A furnace wall comprising a row of spaced substantially parallel vertically eX- tending tubes, substantially continuous refractory material disposed in the spaces between said tubes and contacting therewith, metallic members disposed between adjacent tubes in the row and disposed vertically one above the other, with parts of said members between said adjacent tubes substantially contacting with each other and thus supporting each other, said members partially embracing and loosely engaging said adjacent tubes to thereby prevent movement of the members laterally of the tubes while permitting movement longitudinally thereof, and means on said members to hold said refractory material in engagement therewith.

20. A furnace wall comprising a row of spaced substantially parallel vertically eX- tending tubes, substantially continuous refractory material disposed in the spaces between said tubes and contacting therewith, a part of each tube between adjacent portions of refractory material being exposed to the heat of the furnace, metallic members disposed between adjacent tubes in the row and disposed vertically one above the other, with parts of said members between said adjacent tubes substantially contacting1 with each other and thus supporting eac other said members partially embracing and loosely engaging said adjacent tubes to thereb prevent 5 movement of the members lateral y of ,the tubes while ermitting movement lon 'tudi-` nall thereo and means on said mem rsto hol said refractory materialin engagement therewith. 21. A furnace wall comprising a row of spaced substantially parallel 4vertically extending tubes, metallic plates closely spaced along said tubes and'forming shelves extending outwardly from said tubes into the spaces therebetween approximately in the plane of the row of tubes and soarranged as to subc stantially bridge said spaces, means tohold e the shelves in position relative to the tubes, a substantially continuous monolithic refractoryv material disposed on said shelves and extending between said adjoining tubes but leaving a part of each .of said tubes between portions of said material exposed to the heat s of the furnace, and a substantially continuous 25 backing extending lengthwise of the tubes and contacting with said refractory material and coo -erating with said shelves to hold said materia in place.

22. 'A furnace wall com rising a row of o spaced substantially para el vertically`extending tubes, metallic plates closely spaced valong said tubes and forming shelves extend- 1 ing outwardly from said tubes into the spaces therebetween approximately in the plane of the row of tubes and so arranged as to substantially bridge said spaces, means including welding to said tubes to hold the shelves in position relative to the tubes, a substantially continuous monolithic refractory material 4 0 disposed on said shelves and extending between said adjoining tubes but leaving a part of each of said tubes between portions of said material exposed to the heat 'of the furnace,l and a substantially continuous backing ex- 45 tending lengthwise of the tubes and contacting with said refractory material and cooperating with said shelves to hold said material in place. Y

DAVID s. J'AcoBUs.

N HOWARD J. KERR.

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