US1762814A - Tuyere - Google Patents

Description

`lune 10, 1930. A. H. FosblCK TUYRE Filed May 21. 1928 INVENTOR BY WQ/@f' Patented June 10, 1930 UNITED- STATES PATENT OFFICE ALEXANDER n. Eosnromor BETHLEHEM, PENNSYLVANIA, AssIGNoE 'ro HEM STEEL COMPANY BETHLE- TUYRE Applicatie mea may 21,

My invention relates totuyres for blast furnaces and more especially to the type which has its body water-cooled and its nose portion filled with refractory material for protection from the excessive heat to which tuyres are subjected.

The object of my invention is to provide a two-piece tuyre comprising a plurality of members made of metal having different physical characteristics.

Another object of my invention is to provide a two-piece tuyre, comprising a nose portion and a body portion, the nose portion of which is first filled with refractory material and thenfastened to the' body portion by suitable fastening means.

A further object of my invention is Vto provide a tuyre having its nose portion so assembled that it may be replaced, whenever occasion requires. The novel features of my invention will be more fully understood from the following description and claims taken with the drawing in which:

Fig. 1 is a longitudinal section of the tuyre.

Fig. 2 is a cross sectional view taken on the line 2-2.

Fig. 3 is a sectional view taken on the line 3--3.

Referring tothe drawings the tuyre 10 comprises two portions, a tapering cylindrical body portion 11, which is preferably of copper which has a high coefficient of heat transmission, and a nose portion 12 which is preferably of ferrous metal which is resistant to wear, although other metal may be used for either of the parts to meet requirements. The'body portion 11 is provided with an annular passage or chamber 13, through which cooling water is circulated. The outer end of the body 11 is tapped at 14' and 1'5, toy receive -water inlet and o'tlet pipes 16 and 17, respectively.

The body 11 is provided at the other end with an annular offset 18 which provides a seat for the nose portion 12 when the tuyre is in its 'assembled condition. Holes are tapped. in the body portion at 19to-rece1ve rial, whereas the more 1928. 'Serial No. 279,344.

means for fastening the nose and the body portions together.

The nose 12 comprises two cylindrical parallel walls 20 and 21 having recesses 22 i therebetween and a connecting end portion 23. The outer wall 20 extends a short distance beyond the inner Wall 21 and is provided with holes 24 to receive means for fastening the nose to the body. Preferably j i the recesses 22 are separatedv by ribs 25 which are cast integral with the walls 2O and 21 and the end portion 23. The ribs 25 terminate short of the inner end 26 of the` nose portion 12, and an annular groove 27 is thus formed into which the end 28 of body por- The nose portion` l2 and the body portion '11 are assembled into a tuyre by placing the nose portion 12 over the end 28 of the body portion 11 until the inner Wall 21 of the nose portion 12 rests against the offset 18. The two parts are then fastened together by inserting screws 30 through the holes 24 of the wall 20 of the nose portion and screwv ing them into the tapped holes 19 of the body 11, or these parts may be connected together by any other well known fastening means. The end 28 of the body portion 11 which extends into the groove 27 is now surrounded by the refractory materiall on one side and th'e cooling water chamber on the other, thus inprotection of this part from excessurmg the; sive heat.

It will thus be seen that I have devised a tu'yre having its major portion made of a metal which transmits heat rapidly and having'its nose made 'of a comparativelyinexpenslve metal, compared 4to copper, for

resist-ing the wear to which it is subject in the furnace. With this construction the portion of the tuyre which rapidly wears away in servlce 1s of compartivelyinexpensive mateexpensive metal forming the body, which consitutes the water chamber, may be utilized again.

While I have shown my invention lin but one form, it will be obvious to those skilled in the art that it is not so limited, but is sus ceptible of various other changes and modi- 5 cations without departing from the spirit thereof, and I desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art or as are specically set forth in the appended claims.

lo I claim: y

1. A tuyre comprising a copper bodyportion, Aa detachable ferrous metal nose por- `tion, said body portion having an annular water chamber therein, said nose portion 15 comprising spaced inner and outer walls, means integrall with said walls forming a closure for the outer end of said nose portion, and means comprising the extremity of the `-body portion adapted to provide a closure for zo the inner end of the said nose portion.

2. A tuyre comprising a copper body portion, a detachable ferrous metal nose portion, said body portion having an annular water chamber therein; said nose portion u comprising spaced inner and outer walls, means integral with said walls forming a closure for the outer end of said nose portion..

' a filling of refractory material between said walls, said refractory material yterminating .so adjacent the extremity of the body portion A which contacts with t e nose portion.

3. A tuyre comprising a body portion, a detachable nose portion, said nose portion y comprising spaced inner and outer walls,

35 means integral with said walls forming a closure for the outer end of said nose portion and means com rising the extremity of the body portion a apted to provide a closure for the inner end of said nose portion.

4. A tuyre comprising a body portion, a

' detachable nose port1on,rsa1d nose portion comprising spaced inner and outer walls, means integral with said walls forming a closure for the outer end of said nose portion,

` 5 means comprising the extremt of the body portion adapted to provide a c osure for the inner end of said nose portion and means for detachably fastening the body and the nose portions together.

' 5o In testimony whereof I hereuntoV aiiix my signature.

ALEXANDER H. FOSDICK.

Images