US2034677A - Boiler furnace wall - Google Patents

Description

March 17, 1936. A ONE 2,034,677

BQILER FURNACE WALL 7 Original Filed March 18, 1930 v 2 Sheets-Sheet 1 39 F1 5 Flg'Z l/ INVENTOR aATTm Min-ch 17; 1936. w. A. JONES ,6

BOILER FURNACE WALL Original Filed March 18, 1930 2 Sheets-Sheet 2 h a v INVENTOR MATTQRNEY Patented Mar. '17, 1936 ,scale. showing some of the details.

PATENT OFFICE" BOILER FURNACE WALL- I William A. Jones, Westerleigh, N. Y., assignor to Fuller Lehigh Company, Fullerton, Pa., a corporation of Delaware Application March 18, 1930, Serial No. 436,654

Renewed September 1, 1934 '18 Claims. (01. 122-6) This invention relates to a water cooled furnace wall having separate sections with a gas-tight slip joint between them. The invention will be understood from the description in connection with the accompanying drawings, in which Fig. l is a vertical section, partly broken. away, through an illustrative embodiment of the invention; Fig. 2 is a. similar section showing a modification; Fig. 3 is a section along the line ,3-3 of Fig. 2 or Fig. 4; Fig. 4 is a vertical section on an enlarged Fig. 5 is a front view of Fig. 4, and Fig. 6 is a rear view 01! Fig. 4.

The lower section of the furnace wall is water cooled and is made up of a row of straight water tubes I that are lined on the furnace side with tile 2. The tubes I are connected to an upper header 3 and a lower header 4, and recirculating tubes 5 are connected to headers. 3 and 4 outside of the furnace wall. The headers 3 and 4 may also be connected to the water circulation system of the boiler in the usual manner.

In the modification shown in Fig. 1, a fin 6 is welded tothe lower side of the drum 4, and slides up aiid down between fixed spaced angle bars 1, due to expansion and contraction. This section or the wall is suspended by U-bolts' 9 that extend aroundthe upper ends of the tubes 5, said bolts being provided with nuts III on the upper ends to hold the same in box-like extensions I I that rest upon the top plate I2 of the transverse girder that is made up of side plates I 3, angle bars I4,

' and top and bottomplates I2.

The box-like extensions II are cast upon the upper ends of seal plates I6 that are provided with bulbed ribs for supporting tile. Spacers I5 and II are interposed between the seal plates I6 and the girder I3 so as to'provide a space for circulation of cooling air around the girder. Tile I8 are held at the furnace side ofthe seal plates I6, thereby forming the section of the wall above the header 3.

In the modification shown in Fig. 2, the lower header 4 is supported upon a. support 9', and the upper header 3 moves up and down, due to expansicn and contraction. -The rods 20 passing through the girder, made up of plates I2, I3 and are provided with grooves 25 and 26 in the sides thereof for this purpose.

The bolts 21 (Fig. 4), passing through the plates I3 may keep the plates I6 in place, and a long plate 28 extends across the open ends of the box-like extensions II to close the same, this plate 28 being kept in place by bolts 29 that screw into the edges of the boxes II. A fin 30 (Figs. 2,

4, 5, and 6) is welded to the upper side of the 5 header 3, and is provided with vertical slots 3| through which stud bolts 32 in the plates I 6 pass. The edges of flexible plates 33 and 34 are attached to the fin 30 and the plates I6, respectively, and the other edges of these flexible plates are atl0 tached together as indicated at 35, so that the fin 30 and plates I6 may slide along each other and the plates 33 and 34 will maintain a gas-tight joint.

The upper row of tile 2' on' the tubes l have their upper edges enlarged, and a row of tile 2" rests upon them. The tile 2" are provided with grooves to fit upon the bulbed ribs 3 that are welded to the upper header-3. The bottom row of tile I8 are also provided with grooves to fit the upper portion of the bulbed ribs 3'.

'A row of tile 36 of special shape is provided along the upper edge of the section of the wall made up of the tile I8.. These tile 36 are L-shaped in cross section, so that vertical faces 3'! are provided in proximity to vertical faces 38 of tile upon the section 39 of the furnace'wall so as to provide a slip joint. The section 39 of the furnace wall' rests upon the extensions I I tha are, in turn, supported by the girder I3.

The alternate bulbs 24 terminate near the lower edges of the box-like extensions II, while the other bulbs 24 terminate near the upper edges of these boxes. The row of tile 36 is made up of pairs of tile that differ slightly from each other as most clearly shown in Fig. 3. The tile I8 are all alike except that those in the uppermost row have plan sections of thesame shape as those of the tile 36 superposed above them. One tile 0! each pair of the uppermost row I8 can be re- 40 moved by drawing the same out through the .hollow box II as indicated in dotted lines in Fig. 3. The superposed tile 36 can then'be lowered and removedin the same way. The space thus provided permits another tile of the uppermost row l3 to be removed by moving it laterally and thence out through the box II. The lower tile I8 can then be moved upwardly to the end of the shorter bulbs 24 andcan be removed through the boxes II in a similar manner. I claim: 1. In a boiler, a. furnace having a wall comprising a row of water tubes connected to an upper and a lowerheader, a wall section above said upper header, a support for said section,

a seal plate between said section and said upper header, and tile adjacent said seal plate, said seal plate being provided with a box-like extension through which said tile can be passed.

2. In a boiler, a support, an upper section of the furnace wall of said boiler resting upon said support, a lower section of said furnace wall having straight watertubes connected to upper and lower headers, and a gas seal plate and expans'ion joint between said sections, said tubes: and, plate being lined with tile, and said plate being provided with a hollow extension open at both ends sufliciently large to permit removal of tile therethrough.

3; In a boiler, a furnace having a wall section .comprisingmetal supports and tile retained by said supports on the furnace side of said supports,

'said supports being provided with openings through which said tile may be removed and replaced from the outside of said furnace. i

4. In a boiler, a furnace having a wall section comprising metal supports with tile retaining members thereon, and tile retained by said members on the furnace side of said supports, said, supports being provided with openings through which said tile'may be removed and replaced from the outside of said furnace.

v 5. In a boiler, a furnace having a wall section comprising metal supports and tile retained by said supports on the furnace side of said plates, said plates being provided with box-like openings in the upper portions thereof for the installation and removal of said tile.

6. In a furnace having a wall comprising a row of tubes connected to a header, a wall section above said header, and tile retaining means on said header, tile retained in position by said means, one of said tile forming .a portion of said wall and another one ,forming a portion of said wall section. I

7. In a boiler, a furnace wall comprising spaced tubes and means closing the spaces between the tubes, -a wall section having refractory material on the furnace side supported on said wall, a fixed guide for said refractory section, a fixed support for said guide spacedtherefrom sufficiently to permit air circulation between said guide and support, a refractory wall above said section supportedalong its lower edge, and an expansion joint between said last named wall and said wall section.

8. A furnace wall having an outer support ing structure provided with a series of vertically arranged tile retaining members at its furnace side, vertical rows of tile at the furnace side of said structure positioned between pairs of adjacent retaining members, the upper ends of alternate retaining members terminating at different levels, and, openings formed in said supporting structure above the ends of said shorter retaining members and opposite the spaces be- -longer'buib members to permit the removal of said tile therethrough, and special tile positioned between the upper ends of said longer bulb members and removable outwardly through said openings.

10. A furnace wall having. an upper wall section and a lower wall section movable relative 5 thereto, said lower wall section having an outer supporting structure provided with a series of vertically arranged tile retaining bulb members at its furnace side, a. vertical row of tile"at the furnace side of said structure and vertically slide- 0 able between each pair of adjacent bulb members, the upper ends of alternate bulb members terminating at different levels, and openings formed in said supporting structure above the ends of said shorter bulb members and opposite the spaces between the-longer bulb members to permit the removal of said tile therethrough, and special tile positioned between the upper ends of said longer bulb members and cooperating with said upper wall section to form a slip joint therebetween, said special tile being removable outwardly through said openings.

1l.-A furnace wall having a horizontally arranged header, metallic refractory retaining members extending circumferentially about and connected to the furnace side of said header, and

refractory at the furnace side of said header mounted on and enclosing said retaining members.

12. A furnace wall having a horizontally ari0 ranged header, metallic tile retaining bulbmembers extending circumferentially about and welded to the furnace side of said header, and tile at the furnace side of said header removably mounted on and enclosing said bulb members. 85

13. In a furnace wall, a lower wall section including wall cooling tubes, a second section above the first and including superposed tiles forming a furnace face, a third wall section above the second and having a slip-joint overlapping relation- 40 ship to the top of the second section, a flat metallic structure forming a backing for the tile, and means associated with said structure for holding the tile in alignment and in wall formation with the upper tile overlapping the third section and 45,

forming a slip-joint therewith, said structure and means being so constructed and arranged relative to the tile that the initial removal of tileimediately below said overlapping tile will perm t the removal of the overlapping tile and then the remaining tile by movement toward the exterior of the furnace, the tile of the second section being thereby replaceable without access thereto from positions within the furnace.

14. In a furnace wall, a lower furnace'wall section, a support at'the top of said section, a second section located above the first and including tile maintained by-the support, a panellike flat metallic structure rearwardly of the tile, means rigid with said structure for holding the tile in wall formation in front of said structure, said structure and means being so constructed and arranged relative to the tile that the latter may beremoved and replaced from a position exteriorly of the wall, and a third wall section above the second andthaving an overlapa ping slip-joint relationship to the second section at the upper end of the latter, the top of the sec ondsectionbeing formed by slip-joint tile which must be moved to a lower position before they 0 can be taken out of the wall by movement toward its outer side. 15. In a. furnace wall, a lower wall section, a'

second section above the first and including superposed tiles forming a furnace face, slipjoint tile with ends of unequal height at the top of the superposed tiles, a third wall section above the second and having an overlapping relationship with the slip-joint tiles, 9. wall support, a flat metallic structure secured to the support and forming a backing for the tile, and tile aligners rigid with said structure and holding the tile in wall formation, said structure and tile aligners being so constructed and arranged relative to the tile that the initial removal of tile immediately below the slip-joint tile will permit the down- .ward movement and then the outward removal of the latter and the remaning tile by movement toward the exterior of the furnace, the tile of the second section being thereby replaceable without access thereto from positions within the furnace.

16. In a furnace wall, a first wall section, a

second wall section above the first and including superposed tile forming a furnace face, a third wall section above the second, a fixed support near the top of the second section, a flat metallic structure rigid with the support and forming a backing for the tile of the second section, and tile aligners associated with the support and extending downwardly therefrom, the tile being inter-engaged with the aligners and being in compression with the bottom tile supporting those above it, said metallic structure and the other elements being so constructed and arranged that the tile may be removed and replaced without access thereto from the interior of the furnace.

1'7. In a furnace, a lower wall section, an intermediate wall section including superposed refractory tile, an upper wall section above the intermediate section, means associating the sections so that they form substantially a continuous wall, depending tile aligners with which the tile are inter-engaged, and flat metallic sections forming a backing for the tile and supporting the aligners, the metallic sections and the aligners being so constructed and arranged that the tile of the intermediate section may be removed outwardly of the furnace without access thereto from the interior of the furnace.

18. In a furnace, an upper header, a lower header furnace wall tubes connecting the headers and supporting the lower header from the upper header circulating tubes connecting the headers rearwardly of the wall tubes, 9. support, means connecting the support and the upper header so that the headers and tubes are pendently supported, independently removable tiers of refractories supported above ,and by the upper header, and means whereby said refractories may be removed and replaced without access from the interior of the furnace.

WILLIAM A. JONES.

CERTIFICATE OF CORRECTION.

Patent No. 2,054,677. March 17, 1956.

WILLIAM A. JQNES,

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, first column, lines 50 and 51, claim 5, for "plates" read supports; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 8th day of September, A. D. 1936.

Leslie Frazer (Seal) Acting Commissioner of Patents.

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