US1720941A - Supporting harness for furnace-arch walls - Google Patents

Description

July 16, 1929. J, F. BOO'RAEM 1.720,941

SUPPORTING HARNESS FOR FURNACE ARCH WALLS Filed April 1, 1926 2 Sheets-Sheet 1 INVENTOR 7 ATTOR EY July 16, 1929. ,1. F. BOORAEM 1720,941-

SUPPORTING HARNESS FOR FURNACE ARCH WALLS Filed April 1926 2 Sheets-Sheet 2 ATTOR EY Fill Patented July 16, 1929.

STATES JOHN FRANCIS BOORAEM, OF GREENWICH, CONNECTICUT.

SUPPORTING HARNESS FOR FURNACE-ARCH WALLS.

Application filed April 1,

This invention relates to improved supporting harness for furnace arch walls, and has for its primary object to provide a harness structure which is especially designed and adapted for use in connection with arch wall blocks of the type shown and described in my co-pending application for patent filed February 20, 1926, Serial No.'89,537.

It is the purpose of my present improvements to provide such a harness structure for supporting or suspending the arch blocks in rows and which embodies air receiving pipes or conduits preferably constructed in sections and provided. with means whereby air may be supplied in adequate volume to the passages of the blocks.

ln a preferred embodiment of my present improven'ients, I provide the blocks with reduced portions at one end forming recesses which in conjunction with similar recesses in the blocks of the adjacent rows receive the. air pipes or conduits, and removable wedge members for detachably interlocking the block with said conduits and sujn'iorting the block in suspended relation thereto whereby a continuous longitudinal air receiving channel is produced between the under side of the conduit and the blocks of adjacent rows and into which the passages of said blocks open at their upper ends. Each pipe or conduit is provided in its lower portion with a number of openings through which the air is supplied to said channels for distribution to the ingress ends of the passages of the several blocks through which it is drawn by the draft throngl'i the combustion chamber of the furnace.

lit is another object of the invention to provide a harness structure for the arch blocks of sectional form, a plurality of rows of blocks being suspended from each section of the harness, and being capable of independent relative expansion and easy and quick individual application to or detached from the harness structure.

lVith the above and other objects in view, the invention consists in the improved arch wall supporting or suspending harness, and in the form, construction and relative arnngement of its several parts as will be here inaftcr more fully described, illustrated in the accompanying drawings, and subsequently in corporated in the subjoined claims.

In the drawings, wherein I have illustrated one simple and practical embodiment of my present improvements, and in which similar ting ends of aligned 1926. Serial No. 98,955.

reference characters designate corresponding parts throughout the several views,

Figure 1 is a perspective view of part of a harness structure embodying one form of my invention and showing the blocks in a plurality of rows arranged in applied position in respect thereto;

Fig. 2 is a detail sectional view longitudinally of the furnace chamber showing a number of the harness sections;

Fig. 3 is a top plan view partly in section of one section of the harness; I

Fig. at is an enlarged sectional view of one of the harness sections or units;

Fig. 5 is an enlarged detail View partly in section showing the relationship between the block in adjacent rows and the air supply tube or conduit;

Fig. 6 is an enlarged section;

Fig. 7 is a fragmentary bottom plan view;

Fig. 8 is a detail. perspective View of abut-- air conduits or pipes showing means whereby they may be coupled together and held against relative displacement;

Fig. thereof;

Fig. 10 is a sectional view showing adifferent arrangement of two of the hanger sections and units for suspending the block rows to form a stepped face on the arch wall,

Fig. 11 is detail side view in elevation of plan view partly in 9 is a detail longitudinal section 'one form of the wedge member for detachably interlocking the block with the air supply pipes, and

Fig. 12 is a detail perspective view of a modified form of wedge member.

In a practical embodiment of my invention as illustrated in the accompanying drawings, the supporting harness is preferably in the form of a plurality of independent seenons or units each of which includes a main air inlet pipe 5. This pipe may be composed of any number of sections depending upon the width of the furnace chamber, the pipe sections having flanges at their ends as indicated at 6 and rigidly connected by the bolts 7. The ends of this sectional main pipe extend through the side walls of the furnace structurc, and one or both of said pipe ends is open to the atmosphere and may be provided with a suitable adj nstable damper if desired, to regulate or control thevolume of air entering said pipe.

At spaced points, each pipe section 5 on its under side is-formed with the oppositely projecting lugs 8. With each pipe 5, a plurality of relatively short air supply pipes or conduits 9 are associated, said conduits being arranged with their longitudinal axes extending at right angles to the axis of the pipe 5. Each conduit 9 is separately provided with an angular inlet extension 10 having a flange 11 which is engaged against the under side of one pair of the lugs 8 on the pipe 5. As seen in Fig. 1 of the drawings, these lugs and the flange 8 are recessed as at 12 to receive the connecting or clamping bolts 13 whereby the conduit 9 is rigidly connected with the pipe with its inlet extension in accurate registration with the outlet opening 14 provided at the wall of the pipe 5. Thus, it will be understood that the series of spaced conduits 9 are supplied with air from the common air intake pipe 5. As shown in Fig. 4: of the drawings, the ends of the pipe sections or conduits 9 are open and are arranged in registering abutting contact with the open ends of the corresponding pipe sections of the adjacent air intake pipes 5. Thus, the pipe or conduit sections 9 in the aggregate provide a substantially continuous pipe or conduit extending from the front to the rear end of the furnace structure.

From the spaced air supply pipe or conduit sections 9, the blocks constituting the arch wall structure are suspended. These blocks 15 are of substantially the same form as those referred to in my co-pending application above identified and are provided with reduced upper end portions 16 having inelined side faces to cooperate with the reinovable wedge members 17 whereby said blocks are detachably interlocked with the tubes or conduits 9. Below these wedge members, the walls of the recesses 18 formed at opposite sides of the reduced part 16 of the block are spaced from the under side of the conduit 9. Thus, it will be seen that when the blocks are assembled in rows between the tubes 9, the blocks of adjacent rows having their opposed faces in abutting contact provide a continuous longitudinal channel 19 beneath each of said tubes. The wall of each of these tubes 9 at its lower sides has a series of spaced openings 20 therein through which air is supplied to the channel 19. Each vertical face of the blocks 15 is provided with the air receiving passages as shown in my copending application the upper ingress ends of which open into the channels 19 so that the air is drawn by the draft through the furnace combustion chamber first into pipe 5, then into the tube or pipe sections 9 and into the distributing channels 19 from which it finally passes through the block passages to the under side of the arch wall. The chan nels 19 or the spaces between the arch blocks and the under side of the tubes 9 also permit of relative expansion of the refractory arch block in the adjacent rows and admit of said block being easily lifted to remove the wedge members 17, so that when necessary one or more of the blocks maybe independently removed from the arch wall and replaced by new block or blocks.

As shown in 2 of the drawings, I might provide the tubes 9 of such length relative to the thickness of the individual blocks thatfour of the blocks may be arranged as shown with the end blocks extended beyond the ends of the tube sections 9 and upon the ends of the adjacent aligned tube sections while the openings 20 of the tube sections are in line with the meeting faces of the adjacent blocks. On the other hand, I may arrange three of the blocks on single tube or conduit section 9 so that the blocks are wholly supported and suspended from this single tube section, thus enabling me to arrange the individual or separate units of the harness as seen in Fig. 10 of the drawings, whereby the arch wall is composed of a number of series of transversely extending rows of locks arranged at different vertical elevations so that the inner face of the arch wall presents a stepped appearance. This is sometimes particularly desirable at the rear end of the furnace combustion chamber adjacent to the bridge wall.

In Fig. 10, 1 have shown a form of the detachable wedge member 17 consisting of a casting having a body wall to engage one of the inclined sides of the reduced part (3 of the arch block, said body having an opening therein and the webs or flanges 21 at op )osite sides of said opening, the inner edges of which are curved as clearly shown in Figs. 5 and 11 of the drawings for bearing contact upon the upper side of the tube or conduit 9. As an alternative for this-form of the wedge memher, I may'construct said member as shown in Fig. 12 wherein the body plate thereof is provided on its inner side with a single vertically disposed web 22 for engagement upon the tube or pipe section 9, and the low end of the body plate is curved for contact against the lower side of the tube and bifurcated as at 23 so that it will not interfere with the free passage of air through the outlet openin 20 of the tube and into the channel 19.

If desired, 1 may provide suitable means for positively coijlpling the ends of the aligned conduit sections or tubes 9 with each other. Thus, in Figs. 8 and 9 of the drawings, 1 show a tube 9 having an offsetflange Q l extending around the tube for substantially one-half of the circumference thereof and also projecting longitudinally. This flange 2 1 on its inner face substantially at the center thereof is provided with a lug or boss 25. In assembling the two tube sections, their ends are brought together, the end of one tube section fitting onto the flange 25 of the adjacent tube section and having a recess or seat 26 to receive the stud or projection 25 on the flange 24. Thus, the two tubes are detachably locked and held against relative turning movement.

From the foregoing description considered in connection with the accompanying drawings, the construction, manner of operation and severaladvantages of my improved arch wall harness will be clearly and fully understood. It will, of course, be apparent that the areas of the several pipes or tubes and the passages in the arch blocks are of such proper relative proportions as to permit of the passage of the air in the required volume through the harness structure and the block passages into the combustion chamber of the furnace. This improved harness may be very easily and quickly erected, or removed from its applied position, in connection with the furnace structure, and as each section or unit of the harness is removed, a plurality of the block rows are at the same time removed from the arch wall. However, it will be understood that if desired, both in installing the harness and removing the same, it may be handled independently of the blocks, and the block rows separately arranged in position between the adjacent air supply tubes and interlocked therewith, or individually detached from the harness and removed from the wall structure.

While I have herein shown and described an embodiment of my present improvements which I have found to be very desirable in actual practice, it will nevertheless, be understood that the invention is susceptible of considerable modification in the form, construction and relative arrangement of its several parts, and I therefore, reserve the privilege of all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

I claim:

1. A supporting harness for furnace arch walls comprising independent removable units, each consisting of a main air intake pipe and a plurality of relatively short air supply pipes coupled with said main air pipe and extending at right angles thereto and adapted for alignment with similar air sup ply pipes of adjacent harness units.

2. A harness structure for arch walls coinprising a plurality of independent removable units each consisting of a main air intake pipe and a plurality of relatively short air supply pipes coupled therewith and extending at right angles thereto, the air supply pipes of adjacent units being open at their ends and in abutting contact with each other.

3. In combination with a supporting harness for furnace arch walls comprising independently removable and replaceable sections each consisting of a main air intake pipe and a plurality of air supply pipes coupled with said intake pipe and each having an outlet for air entering the supply pipe from the in take pipe; arch wall blocks, and means for detachably suspending a plurality of said blocks between the supply pipes of each unit and supporting the blocks with relation to said supply pipes to provide channels extending continuously throughout the length of said pipes and said channels receiving air from the supply pipe outlets.

4. A supporting harness for furnace arch walls comprising a plurality of independently removable units each consisting of a main air intake pipe and a series of relatively short air supply pipes coupled thereto and extending at right angles to said main pipe, and means for detachably interlocking a plurality of arch wall blocks with the air supply pipes.

5. A supporting harness for furnace arch walls including wedge members for supporting furnace arch blocks, each wedge member comprising a body plate for engagement with the arch blocks, and webs on said plate having curved edges for contact with a part of the harness.

6, A supporting harness for furnace arch walls including wedge members for supporting furnace arch blocks on said harness, each wedge member comprising a plate, an angular extension on said plate for engagement With one of the arch blocks, and webs extending between the plate and the extension, said webs having curved edges for contact with the upper portion of a part of the harness.

7. A supporting harness for furnace arch walls including wedge members for supporting furnace arch blocks on said harness, each wedge member comprising a plate, an angular extension on said plate for engagement with one of the arch blocks, the free edge of the angular extension being bifurcated, and webs extending between the plate and the extension, said webs having curved edges for contact with the upper portion of a part of the harness.

In testimony that I claim the foregoing as my invention, I have signed my name hereto.

JOHN FRANCIS BOORAEM.

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