US1320059A - Furnace-wall - Google Patents

Description

D. S. JACOBUS.

FURNACE WALL.

APPLICATION FILED ocT. 9. 1911.

\ Patented Oct. 28, 1919.

2 SHEETS-SHEET l.

I I I 7 M ATTORNEYS.

D. S. JACOBUS.

FURNACE WALL.

APPLICATION FILED OCT- 9,19l7.

Patented Oct. 28, 1919.

2 SHEETS-SHEET 2- INVENTOR.

/ ATTORNEYS.

UNITED STATES PATENT OFFICE.

DAVID. S. J ACOBUS, 0F JERSEY CITY, NEW JERSEY, ASSIGNOR TO THE BABCOCK & WILGOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

FURNACE-WALL.

Patented Oct. 28, 1919.

Application filed October 9, 1917. Serial No. 195,542.

T 0 all whom it may concern:

Be it known that I, Dawn) S. JACOBUS, a citizen of the United States. residing at J ersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Furnace-Walls, of which the following is a specification.

The present invention relates to certain improvements in the construction of walls for boiler furnaces and willbe understood by reference to the accompanying drawings, in which Figure 1 is a side view, partly in section, of one adaptation of the invention; Fig. 2 is an enlarged view of the wall, broken away, of Fig. 1; and Figs. 3 and 4 vertical sections of modifications of the arrangement shown in Figs. 1 and 2.

Similar reference numerals indicate similar parts in the several views.

In my application Serial No. 90,058 filed April 10, 1916. I have described means for supporting the front wall of a boiler setting where the weight of the wall is carried, in part, by struts spaced beneath the wall and at intervals along the front of the stoker so that they do not interfere with the carrying of a uniform bed of fire from side to side of the furnace. In that construction I employ special refractory blocks in the wall which interlock with tie pieces to maintain the alinement of the wall. According to the present invention the wall is made in sections, the lower section being supported on the stoker mechanism and the upper section on a cross beam. The struts described in my previous application may or may not be'used in connection with the present invention.

For the purpose of explaining one adaptation of the invention I have shown in Fig. 1 the front wall of a'setting of a Stirling boiler; the front bank of tubes 1 of said boiler together with the front steam and water drum 2 and mud drum, 3 being illustrated. The boiler is shown as fired by an underfeed stoker which comprises the twyer boxes 4: and a ledge plate 5, the latter consisting of the top plates of the t-wyer boxes and fuel magazines or retorts.

The front wall is built in two parts or sections, the lower designated gene ally by the numeral 6 and the upper by the numeral 6'. The weight of the lower section 6 is carried directly by the stoker ledge plate 5 and this weight is so reduced that it may not be necessary to employ the supporting struts described in my application above referred to. This section which rests directly on the stoker mechanism is held in alinement by means of the special tile pieces or refractory blocks 7 two courses of which are shown, and metallic tie pieces 8 having heads 8' which engage grooves or recesses in the blocks as more fully described in my said application Serial No. 90,058. Near their front ends the tiepieces 8 are formed with projecting lugs 11 and these lugs, at their upper and lower projecting ends are engaged by a channel iron 9 and a Z-bar 10. respectively. The channel iron 9 is secured to the web of an I-beam 12, and the Z-bar is secured to the base or lower flange of said beam as indicated in Fig. 2. The beam 12 is supported in the side walls of the setting and extends across the space formedby an inset in the lower section of the wall, and is the sole support of the upper section 6' of the wall.

The refractory blocks 7 and the metallic tie pieces 8 are arranged to allow the section 6 of the wall to expand upward and sidewise without inducing an undue amount of strain, by reason of the expansion of the wall. Holes 13, for ventilation are drilled in the web of the I-beam and the small amount of air which enters through these holes assists in keeping cool the cast iron tie pieces and their supports, and also the I- beam.

The upper part of the wall, which is of greater height than the lower part, is held in alinement by courses of special tile pieces or refractory blocks placed in two double rows at 14 and 15, and metallic tie pieces 16 similar to the tie pieces 8.

The lower part of the .wall can expand up and down freely, a sliding joint 17 being provided between it and the upper part of the wall. less space at the sliding joint than is indicated in the drawing; in fact the bricks will be laid in close contact and the soot, dust and slag from the coal burned on the stoker will seal the joint.

Fig. 3 illustrates a modification in which the special tiles or blocks 7 are at a level below the I-beam 12, and the projecting up- In actual construction there is.

per and lower ends of the lugs 11 engage angles above and below the blocks which are secured, respectively, to the base or lower flange of the I-beam 12 and to the outer metallic casing 18. In this form two rows .of ventilating holes 19 are shown in the I- beam instead of 'a single row as in Figs. 1

' and 2, and the cool air is shown as entering one set of holes and leaving the other. There will usually be sufficient leakage at the expansion joint 17 and through the brick work to cause all of the ventilating air to flow inward through the holes. Two rows of ventilating holes 20 are drilled in the casing in front of the projecting ends of the tie pieces 8. I

In the construction illustrated in Fig. 4, two courses 21 and 22 of special tile pieces or blocks are used at different levels in the wall section 6. In this form the upper and lower projecting ends of the lugs 11 on the tie pieces 8 of the set of tiles 21 engage Z- bars immediately below and above the special tiles, said bars being rigidly secured to the outer metallic casing 18. The lugs on the tie pieces of the tiles 22 engage Z-bars which are rigidly secured to the I-beam 12. Each course of special tiles is independently ventilated by air which flows through the holes 23 and 24.

What I claim and desire to secure by Letters Patent of the United States is 1. A furnace comprising a stoker, a wall built in sections one of which sections is supported on the stoker, and a support independent of the stoker for the other section, said sections being so arranged that there can be relative movement between them to form an expansion joint.

2. A furnace comprising a stoker, a wall built in sections one of which sections is supported on the stoker, and a support inde pendent of the stoker for the other section, both of said sections having courses with special tiles, fixed members, and metallic tie pieces engaging said tiles and said fixed members to assist in holding the wall in proper alinement.

3. A furnace comprising a stoker, a wall built in sections one of which sections is supported on the stoker, and a support independent of the stoker for the other section, said upper section having courses with special tiles, a fixed member and metallic tie pieces engaging said tiles and said fixed member to assist in holding the wall. in proper alinement.

4. A furnace comprising a stoker, a wall built in sections on of which sections is supported on the stoker, and a cross beam independent of the stoker on which the other section is supported.

5. A furnace comprising a stoker, a wall built in sect-ions one of which sections is supported on the stoker, a cross beam independent of the stoker on which the other tie pieces being in an inclosed space, and

means for ventilating said space.

7. A furnace comprising a stoker, a wall built in sections, one of which sections is supported on the stoker, a beam independent of the stoker upon which the upper section of the wall is supported, special tiles in the lower section, and metallic tie pieces engaging said tiles and said beam to assist in maintaining the lower section of the wall in alinement.

8. A furnacecomprising a stoker, a wall built in sections, one of which sections is supported on the stoker, a beam independent of the stoker upon which the upper section of the wall is supported, special tiles in the lower section, and metallic tie pieces engaging said tiles and said beamto assist in maintaining the lower section of the wall in alinement, the projectin ends of said tie pieces being in an inclosed space, and means for ventilating said space to prevent overheating.

9. In a boiler furnace a stoker, a front wall extending across and above the stoker, said wall being divided into sections by a horizontally extending slip joint, and means for supporting the two sections independently of each other, the lower section being supported on the stoker mechanism.

10. In a boiler furnace a stoker, a front Wall extending across and above the stoker, said wall being divided into sections by a horizontally extending slip joint, means for supporting the two sections independently of each other, and means for holding the lower section in alinement.

11. In a boiler. furnace a stoker, a front wall extending across and above the stoker, said wall being divided into sections by a horizontally extending slip joint, means for supporting the two sections independently of each other, and means exterior to the lower section arranged to hold it in alinement.

12. Ina boiler furnace a stoker, a front wall extending across and above the stoker, said wall being divided into sections by a horizontally extending slip joint, means for supporting the two sections independently of each other, and means secured to the supporting means for the upper wall section and arranged to hold the lower Wall section in alinement.

13. In a boiler furnace a stoker, a front wall extending across and above the Stoker, said wall having a horizontally extending slip joint, the lower section being supported on the stoker.

14. In a boiler furnace a stoker, a front wall extending across and above the stoker, said wall having a horizontally extending In testimony whereof I have hereunto 15 signed my name in the presence of two subscr1b1ng W1tnesses.

DAVID S. JACOBUS.

Witnesses:

J. H. KING, JOHN A. W. DIXON.

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