US3350080A - Oxygen lance with helical cooling coil - Google Patents
Oxygen lance with helical cooling coil Download PDFInfo
- Publication number
- US3350080A US3350080A US371555A US37155564A US3350080A US 3350080 A US3350080 A US 3350080A US 371555 A US371555 A US 371555A US 37155564 A US37155564 A US 37155564A US 3350080 A US3350080 A US 3350080A
- Authority
- US
- United States
- Prior art keywords
- oxygen lance
- oxygen
- cooling coil
- helical
- lance
- 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 - Lifetime
Links
- 229910052760 oxygen Inorganic materials 0.000 title description 16
- 239000001301 oxygen Substances 0.000 title description 16
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title description 15
- 238000001816 cooling Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000155 melt Substances 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- C21C5/4606—Lances or injectors
Definitions
- This invention relates to lances which are used, for example, for blowing oxygen onto the surface of a melt in an open hearth furnace.
- FIGURE 1 is a sectional view of the end of one form of oxygen lance
- FIGURE 2 is a sectional view of the end of an alternative form of oxygen lance.
- the lance shown in FIGURE 1 includes an outer casing consisting of three co-axial tubes 11, 12 and 13, an end portion 14 and six radial fins formed integrally with the end portion 14.
- the end portion 14 is welded to the innermost tube 13 and to the outermost tube 11 and the intermediate tube 12 is welded to the six fins 15.
- the passageways between the tubes define a water return channel.
- a water supply pipe 16 is disposed centrally of the outer casing 10 and a steel head or nose 17 which is circular in plan view is provided at the end of the water supply pipe 16.
- a helical coil 18 inter-connecting the water supply pipe 16 and the outer casing 10, the head or nose 17 being formed with a U-shaped communicating passage 19.
- the helical coil 18 is conveniently formed either from a copper-chromium alloy or from stainless steel and the head or nose 17 is so shaped as to prevent the first spiral of the helical coil 18 being damaged by spluttering of steel being lanced.
- Oxygen is supplied through the annular passage defined by the innermost tube 13 and the water supply pipe 16 and passes in a divergent stream between the spirals of the helical coil 18.
- the total area of the outlet i.e. the area of the helical gap between the spirals of the helical coil can be varied by adjusting the position of the water supply pipe 16 by means of a screw mechanism extending through the lance which can be operated either by manual or remote control.
- By varying the area of the outlet the speed of the supply of oxygen is varied inversely for a given rate of feed.
- the oxygen lance shown in FIGURE 2 is similar to that shown in FIGURE 1 and includes an outer casing 10 comprising co-axial tubes 11, 12 and 13, an end portion 14 and fins 15, a Water supply pipe 16, a head 17 on the end of pipe 16- and a helical coil 18 interconnecting pipe 16 and the water return passages in the outer casing.
- the area of theoutlet is adapted to be varied only prior to use and not during use and a bracket 20 to which a cylindrical support 21 is attached is welded to the inside of the innermost tube 13.
- the support 21 surrounds a portion 22 of the Water supply pipe 16 and this portion 22 of pipe 16 is externally screw-threaded for engagement with a nut 23 which bears against the end of the support 21, the helical coil 18 urges the pipe in one direction so as to maintain the nut 23 against the support 21 and upon rotation of the nut 23 the pipe 16 is moved axially so as either to increase or decrease the area of the outlet constituted by the helical gap between the spirals of coil 18.
- An oxygen lance which includes an oxygen supply passageway terminating in an outlet, a water supply tube disposed centrally of the oxygen supply passageway, an outer casing containing a water return passageway, a helical coil connecting said supply tube and said return passageway and wherein the outlet is defined by the helical gap between the spirals of the helical coil and the area of the outlet being variable by adjustment of the axial position of the water supply tube.
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)
- Furnace Charging Or Discharging (AREA)
- Nozzles (AREA)
Description
Oct. 31, 1967 D. N. MANTON 3,350,080
- OXYGEN LANCE WITH HELICAL COOLING COIL Filed June 1, 1964 Mrs/V7016 ,poqqzjs %?H44 MAM/TOM Patented Oct. 31, 1967 3,350,080 OXYGEN LANCE WITH HELICAL COOLING COIL Douglas Norman Manton, 235 Ulverley Green Road, Olton, Solihull, England Filed June 1, 1964, Ser. No. 371,555 Claims priority, application Great Britain, June 22, 1963,
1 Claim. (Cl. 266--34) This invention relates to lances which are used, for example, for blowing oxygen onto the surface of a melt in an open hearth furnace.
It is an object of the present invention to provide a new or improved form of oxygen lance in which means are provided for controlling the rate of flow of oxygen through the outlet of the lance onto the surface of the melt. It is a further object of the present invention a to provide an oxygen lance in which the stream of oxygen issuing through the outlet of the lance is divergent. Other objects and advantages of the invention will be apparent from the following description.
The invention will now be described by way of example with reference to the accompanying drawings in which:
FIGURE 1 is a sectional view of the end of one form of oxygen lance, and
FIGURE 2 is a sectional view of the end of an alternative form of oxygen lance.
The lance shown in FIGURE 1 includes an outer casing consisting of three co-axial tubes 11, 12 and 13, an end portion 14 and six radial fins formed integrally with the end portion 14. The end portion 14 is welded to the innermost tube 13 and to the outermost tube 11 and the intermediate tube 12 is welded to the six fins 15. The passageways between the tubes define a water return channel.
A water supply pipe 16 is disposed centrally of the outer casing 10 and a steel head or nose 17 which is circular in plan view is provided at the end of the water supply pipe 16. There is a helical coil 18 inter-connecting the water supply pipe 16 and the outer casing 10, the head or nose 17 being formed with a U-shaped communicating passage 19. The helical coil 18 is conveniently formed either from a copper-chromium alloy or from stainless steel and the head or nose 17 is so shaped as to prevent the first spiral of the helical coil 18 being damaged by spluttering of steel being lanced.
Oxygen is supplied through the annular passage defined by the innermost tube 13 and the water supply pipe 16 and passes in a divergent stream between the spirals of the helical coil 18. The total area of the outlet i.e. the area of the helical gap between the spirals of the helical coil can be varied by adjusting the position of the water supply pipe 16 by means of a screw mechanism extending through the lance which can be operated either by manual or remote control. By varying the area of the outlet the speed of the supply of oxygen is varied inversely for a given rate of feed.
The oxygen lance shown in FIGURE 2 is similar to that shown in FIGURE 1 and includes an outer casing 10 comprising co-axial tubes 11, 12 and 13, an end portion 14 and fins 15, a Water supply pipe 16, a head 17 on the end of pipe 16- and a helical coil 18 interconnecting pipe 16 and the water return passages in the outer casing.
In this embodiment, however, the area of theoutlet is adapted to be varied only prior to use and not during use and a bracket 20 to which a cylindrical support 21 is attached is welded to the inside of the innermost tube 13. The support 21 surrounds a portion 22 of the Water supply pipe 16 and this portion 22 of pipe 16 is externally screw-threaded for engagement with a nut 23 which bears against the end of the support 21, the helical coil 18 urges the pipe in one direction so as to maintain the nut 23 against the support 21 and upon rotation of the nut 23 the pipe 16 is moved axially so as either to increase or decrease the area of the outlet constituted by the helical gap between the spirals of coil 18.
What I claim is:
An oxygen lance which includes an oxygen supply passageway terminating in an outlet, a water supply tube disposed centrally of the oxygen supply passageway, an outer casing containing a water return passageway, a helical coil connecting said supply tube and said return passageway and wherein the outlet is defined by the helical gap between the spirals of the helical coil and the area of the outlet being variable by adjustment of the axial position of the water supply tube.
References Cited UNITED STATES PATENTS 2,394,497 2/1946 Steudel 266-41 3,223,398 12/ 1965 Bertram et a1. 266-34 3,241,825 3/1966 Jilek et al. 266-34 J. SPENCER OVERHOLSER, Primary Examiner. WILLIAM J. STEPHENSON, Examiner. E. MAR, Assistant Examiner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB24929/63A GB995688A (en) | 1963-06-22 | 1963-06-22 | Improvements in or relating to oxygen lances |
Publications (1)
Publication Number | Publication Date |
---|---|
US3350080A true US3350080A (en) | 1967-10-31 |
Family
ID=10219517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US371555A Expired - Lifetime US3350080A (en) | 1963-06-22 | 1964-06-01 | Oxygen lance with helical cooling coil |
Country Status (3)
Country | Link |
---|---|
US (1) | US3350080A (en) |
DE (1) | DE1912532U (en) |
GB (1) | GB995688A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3892393A (en) * | 1973-02-07 | 1975-07-01 | John T Carroll | Lance tip |
US5707425A (en) * | 1994-10-21 | 1998-01-13 | Nitrotec Corporation | Helium recovery from higher helium content streams |
US5792239A (en) * | 1994-10-21 | 1998-08-11 | Nitrotec Corporation | Separation of gases by pressure swing adsorption |
CN106544466A (en) * | 2016-10-11 | 2017-03-29 | 武汉钢铁股份有限公司 | Spiral converter oxygen gun |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3411716A (en) * | 1966-05-11 | 1968-11-19 | United States Steel Corp | Oxygen lance for steelmaking furnaces |
US4449701A (en) * | 1982-08-23 | 1984-05-22 | Pennsylvania Engineering Corporation | Tuyere for the injection of gases into a metallurgical vessel |
LU87353A1 (en) * | 1988-09-28 | 1990-04-06 | Arbed | OXYGEN BLOWING LANCE |
CN103075632A (en) * | 2013-01-25 | 2013-05-01 | 地质矿产部无锡钻探工具厂 | Hard alloy bar difficultly loosing weld |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2394497A (en) * | 1944-11-13 | 1946-02-05 | Carnegie Illinois Steel Corp | Blast furnace tuyere |
US3223398A (en) * | 1963-02-20 | 1965-12-14 | Kaiser Ind Corp | Lance for use in a basic oxygen conversion process |
US3241825A (en) * | 1961-07-21 | 1966-03-22 | Bot Brassert Oxygen Technik Ag | Blowing device |
-
1963
- 1963-06-22 GB GB24929/63A patent/GB995688A/en not_active Expired
-
1964
- 1964-06-01 US US371555A patent/US3350080A/en not_active Expired - Lifetime
- 1964-06-05 DE DEM48455U patent/DE1912532U/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2394497A (en) * | 1944-11-13 | 1946-02-05 | Carnegie Illinois Steel Corp | Blast furnace tuyere |
US3241825A (en) * | 1961-07-21 | 1966-03-22 | Bot Brassert Oxygen Technik Ag | Blowing device |
US3223398A (en) * | 1963-02-20 | 1965-12-14 | Kaiser Ind Corp | Lance for use in a basic oxygen conversion process |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3892393A (en) * | 1973-02-07 | 1975-07-01 | John T Carroll | Lance tip |
US5707425A (en) * | 1994-10-21 | 1998-01-13 | Nitrotec Corporation | Helium recovery from higher helium content streams |
US5792239A (en) * | 1994-10-21 | 1998-08-11 | Nitrotec Corporation | Separation of gases by pressure swing adsorption |
CN106544466A (en) * | 2016-10-11 | 2017-03-29 | 武汉钢铁股份有限公司 | Spiral converter oxygen gun |
Also Published As
Publication number | Publication date |
---|---|
GB995688A (en) | 1965-06-23 |
DE1912532U (en) | 1965-03-25 |
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