US896937A - Furnace-port-cooling means. - Google Patents

Description

No. 896,937. PATENTBD AUG. 25, 1908. P. E. PARKS & H. A. DEUEL. FURNACE PORT COOLING MEANS.

APPLICATION FILED MAR. 3, 1908.

2 SHEETS-SHEET l.

awuenlfozs ianna/4g N0. 896,937v PATENTED AUG. 25, 1908.

F. E. PARKS & H. A. DEUEL. FURNACE PORT COOLING.MEANS.

APPLICATION FILED'MAR. 3, 1908.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

FRANK E. PARKS AND HARRY A. DEUEL, OF PUEBLO, COLORADO.

FURNACE PORT-COOLING MEANS.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed March 3, 1908. Serial No. 418,996.

T 0 all whom it ma 1 concern:

Be it known that we; F RANK E. PARKS and HARRY A. DEUEL, citizens of the United States, residing at Pueblo, in the county of Pueblo and State of C()l()I'L(lO, have invented certain new and useful Improvements in Furnace-Port-(Tooling Means, of which the following a specification. I

Our invention relates to arch cooling means for the gas ports of metallurgical furnaces, and its object is to provide a construction whereby the arch is elliciently cooled while remaining self supporting; the refractory material of the arch being protected without abstracting any appreciable portion of the heat imparted to the gas by the regenerators or to the products of combustion heating the opposite regenerators. At the same time, the walls of the-ports are prevented from cutting back, particularly at their junction with the furnace; thereby preserving their original construction and dimensions and keeping the gas confined so that it does not spread and cut the front and back walls of the furnace. advantages by the construction shown in the accompanying drawing, in which Figure l. is a diagrammatic longitudinal section of one half of an ordinary form of open hearth furnace, showing the manner of applying our invention; Fig. 2 is similar view of a portion of the outer end of the arch, corresponding to a section-on the line Il-II of Fig. 3, and Fig. 3 is an end view of the arch structure showing the water-supply' and discharge connections in elevation.

1 is the body of the furnace supplied by 2 leading, at 3, to the the usual gas ports regenerators or slag pockets (not shown). I

The arch, 4, of the ports is constructed of suitable refractory material, preferably silica brick,- and immediately above the arch are placed a plurality of pipes 5, extending longitudinally thereof as nearly as practicable to the inner or furnace end of the arch; the inner ends of these pipes being suitably closed at 6, (Fi 1) preferably by welding.

The outer end of each pipe is fitted with a T, 7, one end of which may be partially closed by a reducer 8, while the side connection 9 is fitted with a short discharge pipe 10.

Passing inside each of the pipes 5, and secured therein by the reducers, are lengths of smaller supply pipe 11, open at their inner ends 12 (Fig. 1) and each fitted at its outer end with a cook. or valve 13.

We secure these Short I be used,

1] outside the valves 13, to Ts or other suit-- able fittings 15, on a common supply pipe 16; though any other preferred arrai'igmncnt may be substituted which will permit each pipe 11 to be supplied imlependently of the others; for exainple, independent supplies, instead of a common pipe 6, might be provided; adapted for ready disconnection and the application of higher-pressure connections, for cleaning in case of stoppage.

The overflow pipes 10 empty into a common waste trough 17, preferably supported in a slightly inclined length of channel-iron 18, carried by brackets 19, secured to the buck-stays 20. A sewer connection 21 is provided at the lower end of the watertrough.

Any desired number of cooling pipes may and of suitable stock sizes; -3; inch pipes with one inch supplies and overflows having been found adequate. By flatteningthe pipes 5 to elliptical cross section Where the Y are embedded in the arch and ellipses llOl'lZOll-' arranging longer axes of the tally, the cooling eiiect may be more evenly distributed on the upper surface of the. arch, if desired. 1

- It will be notedthat the incoming cold water is discharged at the inner ends of the pipes over the hottest portion of the arch; and that if leakage occurs in any pipe its supply may be temporarily cut oil till repairs can be made. Moreover, if stoppage occurs in any pipe, the full force of the supply may be thrown through it by closing the other supply pipes.

After the cooling tact with the upper surface of the arch bricks, the arches are tainped up to the required thickness with silica sand, magnesite or other suitable refractory material; thereby protecting the pipes from the flame of the furnace, giving close contact with the cooling surface of the pipe and insuring maximum radiation.

pipes are laid in close con.-

nipples 14 may be used to connect the pipes,

Although we have illustrated anddescribed vided below the arch and within the port and that arches, both upright and inverted, have been supported by a grid or frame-work of cooling plpes; but the advanta es of our invention result from the fact t at the ordinary form of arch is efficiently cooled and rendered durably self-supporting, the cooling system itself made more durable by reason of its sustaining no we' ht of Wall, and the .full available heat of t e gases utilized by port-arches, comprising a plurality of fluidcirculating conduits arranged longitudinally of and in close contact with the upper side of the arch-wall and embedded in refractory material, and independent fluid-supply connections to each conduit; substantially as described. a v I 3. .Coolin meansfor furnace-ports, -comprising a se f-supporting arch, a lurality of fluid conduits for absorbing an conveying heat from said arch, said conduits being 10- cated out of contact with the he ed gases, and means for supplying a cooling fluid to said conduits at the hottest part of said arch; substantially as described 4. A furnace-port having a self-supportin arch, a pluralitfy; of water-pipes arrange long tudinally o the upper surface thereof, independent supply connections for each 2. Cooling means for regenerative-furnace pipe, and a common discharge-trough for the pipes; substantiall as described.

5. A water-coo ed port for open-hearth furnaces, comprising a self-supporting arch of refractory material, a plura ity of cooling pipes arranged in close contact with the upper side of said arch, an independent fluidsupply pipe arranged to discharge fluidat the inner end of each coolingi c, closing means for each su ply-pipe and discharge orifices for the coo ing pipes; substantially as described.

6. A water-cooled gas-port for open-hearth furnaces, comprising a self-supporting arch, a lurality of cooling-pipes arranged longi tu inally in close contact with the outer side of said arch, fluid-supply pipes arranged to discharge a cooling-fluid near the closed end of each cooling pipe, independent closing means for each su ply-pipe, a common collecting trough for t e heated fluid discharged from the cooling-pipes, and heat protecting and -radiating material closely covering said (2001' -pipes; substantially as described.

7. OOlIIIg means for regenerative furnace ports, comprisin a self-supporting refractory arch, a plura ity of fluid-circulating con-- duitsarranged-longitudinally of and embedded in the refractory arch out of contactwith the heated gases, and independent fluidsupply connections arrangedto supply cool- I ing fluid to said conduits at the hottest part of the arch; substantially as described.

In testimony whereof we aflix our signatures in presence of two witnesses.

FRANK EIPAR'KS, HARRY, A. DEUEL.

Witnesses:

JAMES H. .ROBINSON, vJ. H. MEANS.

Images