CA1047764A - Tuyere support means for metallurgical vessels - Google Patents
Tuyere support means for metallurgical vesselsInfo
- Publication number
- CA1047764A CA1047764A CA202,997A CA202997A CA1047764A CA 1047764 A CA1047764 A CA 1047764A CA 202997 A CA202997 A CA 202997A CA 1047764 A CA1047764 A CA 1047764A
- Authority
- CA
- Canada
- Prior art keywords
- flange
- pipe
- tuyere
- vessel
- adjacent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000001294 propane Substances 0.000 abstract description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000013011 mating Effects 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
TUYERE SUPPORT MEANS
FOR METALLURGICAL VESSELS
ABSTRACT OF THE DISCLOSURE
A refractory lined metallurgical vessel for converting molten ferrous metal to steel and having at least one replaceable tuyere for allowing injection of oxygen and other gases through the molten metal.
The tuyere includes a pair of concentric pipes which permits delivery of a first gas such as oxygen through the inner pipe and a shielding fluid such as propane through the outer pipe. The tuyere pipes are joined to each other and to the vessel by means of mating flanges which are secured by a quick release clamping band. In addition, a cover plate for the access opening in the center tuyere may be secured to a support flange b a similar clamping band.
FOR METALLURGICAL VESSELS
ABSTRACT OF THE DISCLOSURE
A refractory lined metallurgical vessel for converting molten ferrous metal to steel and having at least one replaceable tuyere for allowing injection of oxygen and other gases through the molten metal.
The tuyere includes a pair of concentric pipes which permits delivery of a first gas such as oxygen through the inner pipe and a shielding fluid such as propane through the outer pipe. The tuyere pipes are joined to each other and to the vessel by means of mating flanges which are secured by a quick release clamping band. In addition, a cover plate for the access opening in the center tuyere may be secured to a support flange b a similar clamping band.
Description
~04776~
BACKGROUND OF THE INvENTIoN
This invention relates to tuyeres for metallurgical vessels and more particularly to quick release means for attachment of such tuyeres.
Converter vessels are employed for converting molten ferrous metal to steel by blowing process gases such as oxygen through the molten metal by means of tuyeres located in the bottom or side of the vessel. Because the vessel bottoms tend to wear faster than the remaining vessel refractory, such vessels are often provided removable bottom inserts. These removable bottoms normally include tuyeres mounted on an insert bottom plate and extend upwardly through the refractory bottom structure. The tuyeres of bottom blow~ vessels may also com-prise concentric pipes which permit the simultaneous injection of oxygen through the center pipe and a hydrocarbon containing shielding fluid such as propane, light oil or natural gas ; through the space between the pipes.
In spite of the use of shielding fluids, such tuyeres and their surrounding refractory linings are generally eroded at a rate faster than the refractory lining of the vessel itself. It is, therefore, often necessary to replace the vessel bottom several times during the life of the refractory lining of the vessel. Also, individual tuyeres may ~ burn away at a faster rate than others. Other tuyeres may ., , become blocked whereby the erosion process is severely retarded or does not occur to any appreciable extent. It is therefore necessary in converter vessels having tuyeres disposed below the surface of the molten metal to periodically make measurements of tuyere length in order to determine whether individual tuyeres must be replaced, closed off or whether an entire new bottom is required. As a result, tuyeres are often provided with access openings so that such length measurements .. ..
,, . ~ -.
~o47764 may be taken. The covers for such access openings as well as the flanges which normally mount such tuyeres to a vessel bottom may include a plurality of circumferentially spaced bolts which must be removed individually. This bolt removal for tuyere measurement or replacement is relatively time consuming during which the vessel must necessarily be kept out of operation.
SUMMARY OF THE INVENTION
An object of the invention is to provide converter vessel tuyere mounting means.
It is the general object of the invention to provide a converter vessel with means to permit rapid tuyere replacement and length measurement.
These and other objects and advantages of the present invention will become more apparent from the detailed description thereof taken with the accompanying drawings.
In general terms, the invention comprises a converter vessel having at least one tuyere which may be mounted to the vessel by means of a clamp ring which engages the peripheral edges of a flange on the tuyere and the vessel. A similar clamp--~ 20 ing ring may be employed to secure any additional tuyere pipes or access opening covers.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a front elevational view, partly in sectlon, of a converter vessel having tuyeres according to the -present invention;
FIGURE 2 is an enlarged sectional view of a tuyere according to the present invention;
FIGURE 3 is a view taken along lines 3-3 of FIGURE 2;
and - 30 FIGURE 4 is a view taken along lines 4-4 of FIGURE 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
A converter vessel 10 is shown in FIGURE 1 to include
BACKGROUND OF THE INvENTIoN
This invention relates to tuyeres for metallurgical vessels and more particularly to quick release means for attachment of such tuyeres.
Converter vessels are employed for converting molten ferrous metal to steel by blowing process gases such as oxygen through the molten metal by means of tuyeres located in the bottom or side of the vessel. Because the vessel bottoms tend to wear faster than the remaining vessel refractory, such vessels are often provided removable bottom inserts. These removable bottoms normally include tuyeres mounted on an insert bottom plate and extend upwardly through the refractory bottom structure. The tuyeres of bottom blow~ vessels may also com-prise concentric pipes which permit the simultaneous injection of oxygen through the center pipe and a hydrocarbon containing shielding fluid such as propane, light oil or natural gas ; through the space between the pipes.
In spite of the use of shielding fluids, such tuyeres and their surrounding refractory linings are generally eroded at a rate faster than the refractory lining of the vessel itself. It is, therefore, often necessary to replace the vessel bottom several times during the life of the refractory lining of the vessel. Also, individual tuyeres may ~ burn away at a faster rate than others. Other tuyeres may ., , become blocked whereby the erosion process is severely retarded or does not occur to any appreciable extent. It is therefore necessary in converter vessels having tuyeres disposed below the surface of the molten metal to periodically make measurements of tuyere length in order to determine whether individual tuyeres must be replaced, closed off or whether an entire new bottom is required. As a result, tuyeres are often provided with access openings so that such length measurements .. ..
,, . ~ -.
~o47764 may be taken. The covers for such access openings as well as the flanges which normally mount such tuyeres to a vessel bottom may include a plurality of circumferentially spaced bolts which must be removed individually. This bolt removal for tuyere measurement or replacement is relatively time consuming during which the vessel must necessarily be kept out of operation.
SUMMARY OF THE INVENTION
An object of the invention is to provide converter vessel tuyere mounting means.
It is the general object of the invention to provide a converter vessel with means to permit rapid tuyere replacement and length measurement.
These and other objects and advantages of the present invention will become more apparent from the detailed description thereof taken with the accompanying drawings.
In general terms, the invention comprises a converter vessel having at least one tuyere which may be mounted to the vessel by means of a clamp ring which engages the peripheral edges of a flange on the tuyere and the vessel. A similar clamp--~ 20 ing ring may be employed to secure any additional tuyere pipes or access opening covers.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGURE 1 is a front elevational view, partly in sectlon, of a converter vessel having tuyeres according to the -present invention;
FIGURE 2 is an enlarged sectional view of a tuyere according to the present invention;
FIGURE 3 is a view taken along lines 3-3 of FIGURE 2;
and - 30 FIGURE 4 is a view taken along lines 4-4 of FIGURE 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT
A converter vessel 10 is shown in FIGURE 1 to include
-2-.
- . . . - .
104~764 a metallic shell 11 and a refractory lining 12. As those ; skilled in the art will appreciate, converter vessels of the type illustrated are generally supported in a conventional manner on a trunnion ring 13 which has a trunnion pin 14 extending from each of its opposite sides. The trunnion pins 14 are suitably supported in a well known manner on bearing structures (not shown) and are coupled to a suitable drive mechanism (not shown) for tilting vessel 10 to each of a plurality of positions as may be required during a process cycle. A smoke hood 15 may be disposed above the open upper end of a vessel 10 when the latter is in its vertical position as shown in FIGURE 1 to prevent the discharge of pollutants during operation of the vessel.
The vessel 10 has a removable refractory bottom 16 which may be attached to the vessel 10 in any suitable manner.
In the illustrated embodiment, for example, bottom 16 may be provided with a flange 17 for being suitably attached by a plurality of bolts 18 to a mating flange 19 on vessel shell 10.
; The bottom 16 may include a bottom plate 19 for supporting a plurality of tuyeres 21 which extend through openings 20 in the refractory bottom 16. The tuyeres 21 each includes an inner pipe (not seen in FIGURE 1) adapted to be connected to a source of oxygen containing gas through a first delivery pipe 24. An outer tuyere pipe 30 adapted to be connected through delivery pipe 27 to a suitable source of a shielding fluid such as propane, natural gas or light oil. Normally oxygen will be blown into the molten metal in vessel 10 during at least ,~ a portion of the process cycle to oxidize carbon, silicon, phosphorous and other impurities while the shielding gas will be blown through outer tuyere pipe 30 to prolong the life of the refractory 16.
:
- . . . - .
104~764 a metallic shell 11 and a refractory lining 12. As those ; skilled in the art will appreciate, converter vessels of the type illustrated are generally supported in a conventional manner on a trunnion ring 13 which has a trunnion pin 14 extending from each of its opposite sides. The trunnion pins 14 are suitably supported in a well known manner on bearing structures (not shown) and are coupled to a suitable drive mechanism (not shown) for tilting vessel 10 to each of a plurality of positions as may be required during a process cycle. A smoke hood 15 may be disposed above the open upper end of a vessel 10 when the latter is in its vertical position as shown in FIGURE 1 to prevent the discharge of pollutants during operation of the vessel.
The vessel 10 has a removable refractory bottom 16 which may be attached to the vessel 10 in any suitable manner.
In the illustrated embodiment, for example, bottom 16 may be provided with a flange 17 for being suitably attached by a plurality of bolts 18 to a mating flange 19 on vessel shell 10.
; The bottom 16 may include a bottom plate 19 for supporting a plurality of tuyeres 21 which extend through openings 20 in the refractory bottom 16. The tuyeres 21 each includes an inner pipe (not seen in FIGURE 1) adapted to be connected to a source of oxygen containing gas through a first delivery pipe 24. An outer tuyere pipe 30 adapted to be connected through delivery pipe 27 to a suitable source of a shielding fluid such as propane, natural gas or light oil. Normally oxygen will be blown into the molten metal in vessel 10 during at least ,~ a portion of the process cycle to oxidize carbon, silicon, phosphorous and other impurities while the shielding gas will be blown through outer tuyere pipe 30 to prolong the life of the refractory 16.
:
-3-. ' .
~047~64 The tuyere assembly 21 is shown more particularly in FIGURE 2 to include an outer tuyere pipe 30 and an inner concentric tuyere pipe 31. The outer tuyere pipe 30 is formed in two sections 30a and 30b which are coaxially secured in a circular opening 33 formed in an annular flange member 34.
Those skilled in the art will appreciate that pipe sections 30a and 30b may be affixed to member 34 in any suitable manner such as by welding. Suitable flanges 35 and 36 may be respectively secured to the outer tuyere pipe section 30b and inner tuyere pipe 31 for securing the same to each other and to a third flange 37 affixed to pipe section 38 which couples the inner tuyere pipe 31 to air delivery pipe 24. Flanges 35, 36 and 37 are secured by quick release means 39 according to the invention as will be discussed more fully below.
, The inside diameters of tuyere pipe sections 30a and 30b are larger than the outside diameter of the concentrically arranged inner tuyere pipe 31 to provide a gap 41 therebetween for the delivery of shielding fluid in a sheath around the oxygen to be provided through inner pipe 31. Suitable spacers ... ..
such as fins (not shown) may be provided to maintain the desired spacing between pipes 30 and 31 and to define gap 41. An internally threaded nipple 42 may be secured to outer tuyere pipe section 30b and around an opening 44 therein for receiving ; the threaded end of a pipe 45 whose other end is connected to shielding gas delivery pipe 27. A suitable gasket 46 may be provided between flanges 35 and 36 to seal the outer end of ` gap 41 and a second gasket 47 may be provided to seal the junction between flanges 36 and 37.
The tuyere assembly 21 may be supported on a short tubular section 48 which is secured at one end within an annular recess 49 formed in surrounding relation to an opening 50 formed in plate 19. An annular flange 51 is affixed to the ~. . - . .
. ~' ' ' ` . .
lV47764 other end of tubular member 49 and to which the flange 34 may be suitably affixed by the clamping means 52 according to the invention as will be discussed more fully below.
The oxygen pipe 38 may have an elbow 55 affixed to its end remote from tuyere assembly 21. An access opening 56 may be formed in elbow 55 in a coaxial relation to the inner tuyere pipe 41. A tubular section 58 is affixed to pipe 55 and in surrounding relation to opening 56 and has a radially extending flange 60 at its outer end. A cover plate 61 may be secured to flange 60 by means of a quick release clamp 63 according to the invention.
The quick release attachment means 39, 52 and 63 are identical except for their dimensions and, accordingly, only members 63 will be discussed in detail, for the sake of brevity.
With reference to FIGURES 3 and 4, the clamp member 63 comprises a pair of resilient generally C-shaped members 65 each having one end hinged to the other by a hinge 66 and a pair of opposed fingers 68 disposed at the other. A bolt 70 extends through aligned openings in fingers 68 and is secured by a nut 71. As seen particularly in FIGURE 4, each of the members 65 is generally U-shaped in transverse cross section with its sides extending outwardly at a slight oblique angle. In addition, the interior dimension of the base 73 of each member 65 is preferably slightly smaller than the combined width of the flanges 60 and 61. In assembly, the plate 61 is placed against the flange 60 and the clamping ring 63 is placed therearound after which the bolt 70 is inserted through the openings in finger 68. This will position the members 65 in the dashed position shown in FIGURE 4 with the base 73 disposed away from the peripheral surfaces of flange 60 and plate 61. As the bolt 71 is tightened, the members 65 will be drawn radially inwardly from their position shown by dashed lines in FIGURE 4 , ,' ' ' 1~)47764 to the position shown by full lines. Because the inner dimension of base 73 is smaller than the combined width of flanges 60 and plate 61 and as a result of the outwardly spread configuration of sides 72, a wedging action occurs to force the plate 61 tightly against flange 6~0. The plate 61 may, of course, be disassembled from flange 60 by the removal of a single bolt 70. It will, therefore, be appreciated that each of the clamping ring assemblies 52, 39 and 63 may be rapidly removed to facilitate tuyere servicing operations.
For example, with respect to plate 61, it is periodically necessary to measure the length of tuyere 30 as a result of the continual burnback thereof and of the surrounding refractory during operation. Such measurements are facilitated by the rapid removal and replacement of plate 61 permitted by the quick release clamp 63. Also when tuyere 21 has burned away to a sufficient degree, it becomes necessary to replace either an individual tuyere 21 or the entire bottom assembly 16 along with its associated tuyeres. In either event, the tuyeres can be rapidly disconnected from the oxygen pipe 55 by the removal of the quick release clamp 39 and from the vessel by removal of clamp 52. It will be appreciated that such removal operation will be substantially more rapid than prior art methods which ; employed a plurality of bolts for coupling and uncoupling each of the various flanges.
While only a single embodiment of the invention is shown and described, it is not intended to be limited thereby but only by the scope of the appended claims.
` ' ' ~- 30 ..
' ' . ' . , . .- .:
~047~64 The tuyere assembly 21 is shown more particularly in FIGURE 2 to include an outer tuyere pipe 30 and an inner concentric tuyere pipe 31. The outer tuyere pipe 30 is formed in two sections 30a and 30b which are coaxially secured in a circular opening 33 formed in an annular flange member 34.
Those skilled in the art will appreciate that pipe sections 30a and 30b may be affixed to member 34 in any suitable manner such as by welding. Suitable flanges 35 and 36 may be respectively secured to the outer tuyere pipe section 30b and inner tuyere pipe 31 for securing the same to each other and to a third flange 37 affixed to pipe section 38 which couples the inner tuyere pipe 31 to air delivery pipe 24. Flanges 35, 36 and 37 are secured by quick release means 39 according to the invention as will be discussed more fully below.
, The inside diameters of tuyere pipe sections 30a and 30b are larger than the outside diameter of the concentrically arranged inner tuyere pipe 31 to provide a gap 41 therebetween for the delivery of shielding fluid in a sheath around the oxygen to be provided through inner pipe 31. Suitable spacers ... ..
such as fins (not shown) may be provided to maintain the desired spacing between pipes 30 and 31 and to define gap 41. An internally threaded nipple 42 may be secured to outer tuyere pipe section 30b and around an opening 44 therein for receiving ; the threaded end of a pipe 45 whose other end is connected to shielding gas delivery pipe 27. A suitable gasket 46 may be provided between flanges 35 and 36 to seal the outer end of ` gap 41 and a second gasket 47 may be provided to seal the junction between flanges 36 and 37.
The tuyere assembly 21 may be supported on a short tubular section 48 which is secured at one end within an annular recess 49 formed in surrounding relation to an opening 50 formed in plate 19. An annular flange 51 is affixed to the ~. . - . .
. ~' ' ' ` . .
lV47764 other end of tubular member 49 and to which the flange 34 may be suitably affixed by the clamping means 52 according to the invention as will be discussed more fully below.
The oxygen pipe 38 may have an elbow 55 affixed to its end remote from tuyere assembly 21. An access opening 56 may be formed in elbow 55 in a coaxial relation to the inner tuyere pipe 41. A tubular section 58 is affixed to pipe 55 and in surrounding relation to opening 56 and has a radially extending flange 60 at its outer end. A cover plate 61 may be secured to flange 60 by means of a quick release clamp 63 according to the invention.
The quick release attachment means 39, 52 and 63 are identical except for their dimensions and, accordingly, only members 63 will be discussed in detail, for the sake of brevity.
With reference to FIGURES 3 and 4, the clamp member 63 comprises a pair of resilient generally C-shaped members 65 each having one end hinged to the other by a hinge 66 and a pair of opposed fingers 68 disposed at the other. A bolt 70 extends through aligned openings in fingers 68 and is secured by a nut 71. As seen particularly in FIGURE 4, each of the members 65 is generally U-shaped in transverse cross section with its sides extending outwardly at a slight oblique angle. In addition, the interior dimension of the base 73 of each member 65 is preferably slightly smaller than the combined width of the flanges 60 and 61. In assembly, the plate 61 is placed against the flange 60 and the clamping ring 63 is placed therearound after which the bolt 70 is inserted through the openings in finger 68. This will position the members 65 in the dashed position shown in FIGURE 4 with the base 73 disposed away from the peripheral surfaces of flange 60 and plate 61. As the bolt 71 is tightened, the members 65 will be drawn radially inwardly from their position shown by dashed lines in FIGURE 4 , ,' ' ' 1~)47764 to the position shown by full lines. Because the inner dimension of base 73 is smaller than the combined width of flanges 60 and plate 61 and as a result of the outwardly spread configuration of sides 72, a wedging action occurs to force the plate 61 tightly against flange 6~0. The plate 61 may, of course, be disassembled from flange 60 by the removal of a single bolt 70. It will, therefore, be appreciated that each of the clamping ring assemblies 52, 39 and 63 may be rapidly removed to facilitate tuyere servicing operations.
For example, with respect to plate 61, it is periodically necessary to measure the length of tuyere 30 as a result of the continual burnback thereof and of the surrounding refractory during operation. Such measurements are facilitated by the rapid removal and replacement of plate 61 permitted by the quick release clamp 63. Also when tuyere 21 has burned away to a sufficient degree, it becomes necessary to replace either an individual tuyere 21 or the entire bottom assembly 16 along with its associated tuyeres. In either event, the tuyeres can be rapidly disconnected from the oxygen pipe 55 by the removal of the quick release clamp 39 and from the vessel by removal of clamp 52. It will be appreciated that such removal operation will be substantially more rapid than prior art methods which ; employed a plurality of bolts for coupling and uncoupling each of the various flanges.
While only a single embodiment of the invention is shown and described, it is not intended to be limited thereby but only by the scope of the appended claims.
` ' ' ~- 30 ..
' ' . ' . , . .- .:
Claims (8)
1. A refractory lined metallurgical vessel having at least one tuyere extending through said vessel, tuyere support means mounted on said vessel and external of said refractory lining for supporting said tuyere, said tuyere support means including a first flange means mounted on said vessel and a second flange means mounted on said tuyere, said flanges having a first pair of adjacent surfaces, clamping means surrounding the peripheral edges of said flanges and having wedging surfaces engaging the opposite flange surfaces, said clamping means having a first surface disposed adjacent the peripheral edges of said flanges, the width of said first surface being less than the combined width of said flanges, and a second and third surface formed on said clamping means and extending from said surface toward said peripheral edges and said second and third surfaces being outwardly divergent to form a gap around said edges which is wider at its radial inner edges than at said first surface, and means for forcing said clamping means radially inwardly to wedge said adjacent surfaces.
2. The combination set forth in claim 1 wherein said clamping means comprises a pair of arcuate members first means pivotally coupling one end of each arcuate member and a threaded clamp means for adjustably forcing the other ends of said members toward and away from each other for moving said arcuate members inwardly and outwardly.
3. The combination set forth in claim 2 wherein said tuyere means including a first pipe and a second pipe- disposed within said first pipe, each of said pipes including radial flanges, said flanges having a first pair of adjacent surfaces, and an additional clamping means surrounding the peripheral edges of said flanges and having wedging surfaces engaging the opposite flange surfaces, and means for forcing said clamping means radially inwardly to wedge said adjacent surfaces.
4. The combination set forth in claim 3 wherein said tuyere means includes a measurement access opening, a flange surrounding said opening, a cover plate for said opening generally conforming to said flange, said flange and cover plate having a first pair of adjacent surfaces and an additional clamping means surrounding the peripheral edges of said flange and cover plate and having wedging surfaces engaging the opposite flange surfaces, and means for forcing said clamping means radially inwardly to wedge said adjacent surfaces.
5. The combination set forth in claim 1 wherein said tuyere comprising a first pipe and a second pipe extending through said first pipe and in spaced relationship therewith, said pipes extending from the exterior to the interior of said vessel, said first pipe having said second flange means extending therefrom in proximity with said vessel and third flange means extending therefrom more remote from said vessel, said tuyere support means having an aperture through which said first pipe means extends, said first flange means extending radially from said tuyere support means, said second pipe having fourth flange means adjacent said third flange means on said first pipe, second clamping means for clamping said third flange means on said first pipe to said fourth flange means on said second pipe, said second clamping means comprising arcuate members having means for engaging each other at corresponding ends, means at corresponding opposed ends of said members for selectively forcing said members toward each other, said members having a base for surrounding the periphery of said flange means and axially spaced apart oppositely divergent radially inwardly extending surfaces to enable engaging only the peripheral edges of adjacent flange means to wedge said adjacent flange means toward each other, feed pipe means coupled with said first pipe for conducting fluidic material to the space between said first and second pipes and means coupled with said second pipe for conducting fluid material into it.
6. The combination set forth in claim 5 wherein said feed pipe means has fifth flange means adjacent said fourth flange means on said second pipe, said second clamping means simultaneously engaging said third, fourth and fifth flange means.
7. The combination set forth in claim 6 including means affording an access opening to the interior of said tuyere, apertured flange means having axially spaced apart surfaces in parallelism with each other and extending radially around said opening, plate means having a surface for interfacing with one of said flange surfaces and another surface in parallelism therewith, all of said parallel surfaces lying in planes that are perpendicular to the axis of said opening, and clamping means for pressing said flanges toward each other, said clamping means including pivotally connected arcuate members which in cross section comprise a base for surrounding the peripheries of said flange means and axially spaced apart oppositely divergent radially inwardly extending surfaces for wedging said flanges toward each other.
8. The combination set forth in claim 7 wherein each of said flange means have opposed parallel radially extending surfaces which are perpendicular to the axes of said flange and pipe means, the dis-tance between said radially extending surfaces of said clamp members adjacent said base member being slightly less than the combined thickness of two adjacent flange means whereby to effect said wedging action when said members are forced toward each other.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US372329A US3868096A (en) | 1973-06-21 | 1973-06-21 | Tuyere support means for metallurgical vessels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1047764A true CA1047764A (en) | 1979-02-06 |
Family
ID=23467705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA202,997A Expired CA1047764A (en) | 1973-06-21 | 1974-06-20 | Tuyere support means for metallurgical vessels |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3868096A (en) |
| CA (1) | CA1047764A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1592786A (en) * | 1976-10-19 | 1981-07-08 | Usinor | Bottom blown metallurgical converter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US728111A (en) * | 1903-02-17 | 1903-05-12 | Guy R Johnson | Cap and peep-hole for blast-furnace twyers. |
| US1093868A (en) * | 1912-03-11 | 1914-04-21 | Henry W Jacobs | Means for forming couplings or joints. |
| US2605180A (en) * | 1948-12-07 | 1952-07-29 | Koppers Co Inc | Method and apparatus for the production of iron |
| US3547624A (en) * | 1966-12-16 | 1970-12-15 | Air Reduction | Method of processing metal-bearing charge in a furnace having oxy-fuel burners in furnace tuyeres |
| GB1253581A (en) * | 1968-02-24 | 1971-11-17 | Maximilianshuette Eisenwerk | Improvements in processes and apparatus for making steel |
| US3544138A (en) * | 1969-04-07 | 1970-12-01 | Ulrich C Von Eiff | Coupling assembly for conduits |
-
1973
- 1973-06-21 US US372329A patent/US3868096A/en not_active Expired - Lifetime
-
1974
- 1974-06-20 CA CA202,997A patent/CA1047764A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3868096A (en) | 1975-02-25 |
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