CN109277556B - Dual-purpose tundish roaster burner - Google Patents
Dual-purpose tundish roaster burner Download PDFInfo
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- CN109277556B CN109277556B CN201811342305.5A CN201811342305A CN109277556B CN 109277556 B CN109277556 B CN 109277556B CN 201811342305 A CN201811342305 A CN 201811342305A CN 109277556 B CN109277556 B CN 109277556B
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- screw
- burner body
- valve core
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
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- Mechanical Engineering (AREA)
- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The invention discloses a dual-purpose tundish roaster burner, which comprises a cylindrical burner body, wherein the front end of the burner body is open, and the rear end of the burner body is closed by an end plate; the end plate is provided with an air inlet; the end plate is connected with a three-way pipe, and a threaded sleeve and a screw matched with the threaded sleeve are fixed in the three-way pipe; the screw rod is coaxial with the burner body; a conical valve core is fixed at the front end of the screw rod and is positioned in the air inlet; the screw and the valve core are provided with axial through holes which are mutually communicated and can reach the inside of the burner body; the side wall of the burner body is provided with a plurality of air inlets. The dual-purpose tundish roaster burner with the structure can switch fuel between natural gas and converter gas. And because the heat values of the two fuel gases are greatly different, the air distribution of the different fuel gases can be adjusted to bake the fuel gases according to the optimal air-fuel ratio.
Description
Technical Field
The invention relates to a burner nozzle used on tundish baking equipment in a continuous casting process.
Background
The tundish is a refractory vessel used in short-run steelmaking, and receives molten steel poured from a ladle first, and then distributes the molten steel to each crystallizer through a tundish nozzle.
The tundish roaster plays a great role in the molten steel continuous casting process, and the tundish roasting temperature is related to whether the continuous casting molten steel can be poured into the continuous casting crystallizer through a water gap. The condition that a water gap is blocked and molten steel cannot be continuously poured in the middle of pouring of the tundish is avoided. The actual conditions encountered in production are that the tundish burner is required to be baked with natural gas in the early stage, the converter gas is used for baking in the later stage, and the conventional tundish baking device only uses one gas for baking equipment.
Disclosure of Invention
In view of the above, the present invention provides a dual-purpose tundish roaster nozzle, which can switch between natural gas and converter gas to selectively use roasting fuel.
In order to solve the technical problems, the technical scheme of the invention is as follows: a dual-purpose tundish roaster nozzle comprises a cylindrical nozzle body, wherein the front end of the nozzle body is open, and the rear end of the nozzle body is closed by an end plate; the end plate is provided with an air inlet; the end plate is connected with a three-way pipe, and a threaded sleeve and a screw matched with the threaded sleeve are fixed in the three-way pipe; the screw rod is coaxial with the burner body; a conical valve core is fixed at the front end of the screw rod and is positioned in the air inlet; the screw and the valve core are provided with axial through holes which are mutually communicated and can reach the inside of the burner body; the side wall of the burner body is provided with a plurality of air inlets.
As an improvement, the screw is connected with a natural gas pipe, and the side pipe of the three-way pipe is connected with a converter gas pipe.
As an improvement, the air inlet holes are formed in the rear end of the burner body and are evenly distributed along the circumference. The gas is sprayed at high speed to form negative pressure in the nozzle body, so that the outside air is sucked in through the air inlet hole, and the purpose of automatic air distribution is achieved. The air inlet is arranged at the rear end, so that air and fuel gas are uniformly mixed in advance, and combustion is facilitated. And meanwhile, the air inlet is more smooth due to the uniform distribution along the circumference.
Preferably, the screw is connected with the valve core by screw threads.
As an improvement, the front end of the screw is provided with an external thread, and the valve core is provided with a screw hole; the through hole on the valve core is arranged at the bottom of the screw hole; and a gap is formed between the front end of the screw rod and the bottom of the screw hole.
Preferably, the diameter of the air inlet is larger than the small end of the valve core and smaller than the large end of the valve core. So that the valve core can completely seal the air inlet and can not fall off from the air inlet.
Preferably, the rear end of the three-way pipe is connected with a sleeve coaxial with the three-way pipe; a fixed pipe is arranged in the three-way pipe, the inner diameter of the front part of the fixed pipe is consistent with that of the screw rod, and the inner diameter of the rear part of the fixed pipe is consistent with that of the screw sleeve; the front end of the threaded sleeve is clamped in the fixed pipe, and the rear end of the threaded sleeve is fixed in the sleeve. The screw is positioned and fixed by means of a sleeve.
Preferably, the fixed pipe closes the rear end of the three-way pipe. Avoiding the gas leakage of the converter.
The invention has the advantages that: the dual-purpose tundish roaster burner with the structure can switch fuel between natural gas and converter gas. And because the heat values of the two fuel gases are greatly different, the air distribution of the different fuel gases can be adjusted to bake the fuel gases according to the optimal air-fuel ratio.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: 1 burner body, 2 end plates, 3 air inlets, 4 three-way pipes, 5 valve cores, 6 screws, 7 through holes, 8 fixed pipes, 9 screw sleeves and 10 sleeves.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the following embodiments.
As shown in fig. 1, the burner comprises a cylindrical burner body 1, wherein the front end of the burner body 1 is open, and the rear end of the burner body 1 is closed by an end plate 2; the end plate 2 is provided with an air inlet; the end plate 2 is connected with a three-way pipe 4, and a threaded sleeve 9 and a screw 6 matched with the threaded sleeve 9 are fixed in the three-way pipe 4; the screw 6 is coaxial with the burner body 1; a conical valve core 5 is fixed at the front end of the screw rod 6, and the valve core 5 is positioned in the air inlet; the front end of the screw rod 6 is provided with an external thread, and the valve core 6 is provided with a screw hole; the screw 6 and the valve core 5 are provided with axial through holes 7 which are mutually communicated, and the through holes 7 can reach the inside of the burner body 1; the through hole 7 on the valve core 6 is arranged at the bottom of the screw hole; and a gap is formed between the front end of the screw rod 6 and the bottom of the screw hole. The diameter of the air inlet is larger than the small end of the valve core 5 and smaller than the large end of the valve core. And a plurality of air inlets 3 are formed in the side wall of the burner body 1. The air inlet holes 3 are arranged at the rear end of the burner body 1 and are uniformly distributed along the circumference.
The rear end of the three-way pipe 4 is connected with a sleeve 10 which is coaxial with the three-way pipe; a fixed pipe 8 is arranged in the three-way pipe 4, the inner diameter of the front part of the fixed pipe 8 is consistent with that of the screw 6, and the inner diameter of the rear part of the fixed pipe 8 is consistent with that of the screw sleeve 9; the front end of the threaded sleeve 9 is clamped in the fixed pipe 8, and the rear end is fixed in the sleeve 10. The fixed pipe 8 seals the rear end of the three-way pipe 4.
The screw 6 is connected with a natural gas pipe, and the side pipe of the three-way pipe 4 is connected with a converter gas pipe. When natural gas is needed to be used as fuel, the screw 6 is rotated to enable the valve core 5 to retreat to seal the air inlet, and meanwhile, a valve on a natural gas pipeline connected with the screw 6 is opened. Natural gas enters the burner body 1 through the screw 6 and the through hole 7 on the valve core 5 for combustion.
When converter gas is needed to be used as fuel, a valve on a natural gas pipeline is closed, and then the screw 6 is rotated to generate a certain gap between the valve core 5 and the gas inlet, so that the converter gas enters the burner body 1 through the gap to be combusted. The flow rate of the converter gas can be adjusted by adjusting the opening of the air inlet, so that the negative pressure condition in the burner body is changed, and the air distribution quantity is adjusted to achieve the optimal air-fuel ratio.
The above are only preferred embodiments of the present invention, and the above preferred embodiments should not be considered as limiting the present invention, and the scope of the present invention should be determined by the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (5)
1. The utility model provides a dual-purpose tundish roaster nozzle, includes the nozzle body of tube-shape, its characterized in that: the front end of the burner body is open, and the rear end of the burner body is closed by an end plate; the end plate is provided with an air inlet; the end plate is connected with a three-way pipe, and a threaded sleeve and a screw matched with the threaded sleeve are fixed in the three-way pipe; the screw rod is coaxial with the burner body; a conical valve core is fixed at the front end of the screw rod, is positioned in the air inlet and is arranged in the direction of big front and small back; the screw and the valve core are provided with axial through holes which are mutually communicated and can reach the inside of the burner body; the screw is connected with the natural gas pipe; the side pipe of the three-way pipe is connected with a converter gas pipe, and the rear end of the three-way pipe is connected with a sleeve coaxial with the three-way pipe; a fixed pipe is arranged in the three-way pipe, the inner diameter of the front part of the fixed pipe is consistent with that of the screw rod, the inner diameter of the rear part of the fixed pipe is consistent with that of the threaded sleeve, the front end of the threaded sleeve is clamped in the fixed pipe, and the rear end of the threaded sleeve is fixed in the sleeve; the fixed pipe seals the rear end of the three-way pipe; the side wall of the burner body is provided with a plurality of air inlets.
2. The dual-purpose tundish roaster nozzle of claim 1, wherein: the air inlets are arranged at the rear end of the burner body and are uniformly distributed along the circumference.
3. The dual-purpose tundish roaster nozzle of claim 1, wherein: the screw rod is connected with the valve core by screw threads.
4. The dual-purpose tundish roaster nozzle of claim 3, wherein: the front end of the screw is provided with an external thread, and the valve core is provided with a screw hole; the through hole on the valve core is arranged at the bottom of the screw hole; and a gap is formed between the front end of the screw rod and the bottom of the screw hole.
5. The dual-purpose tundish roaster nozzle of claim 1, wherein: the diameter of the air inlet is larger than the small end of the valve core and smaller than the large end of the valve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811342305.5A CN109277556B (en) | 2018-11-12 | 2018-11-12 | Dual-purpose tundish roaster burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811342305.5A CN109277556B (en) | 2018-11-12 | 2018-11-12 | Dual-purpose tundish roaster burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109277556A CN109277556A (en) | 2019-01-29 |
| CN109277556B true CN109277556B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811342305.5A Active CN109277556B (en) | 2018-11-12 | 2018-11-12 | Dual-purpose tundish roaster burner |
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| CN (1) | CN109277556B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111215582B (en) * | 2019-12-11 | 2021-11-26 | 四川德胜集团钒钛有限公司 | Efficient baking device for iron mold of pig casting machine |
| CN110918959A (en) * | 2019-12-12 | 2020-03-27 | 四川德胜集团钒钛有限公司 | Ladle roaster |
| CN110947922B (en) * | 2019-12-16 | 2022-03-11 | 湖北文理学院 | Pig casting machine slag runner baking device and baking method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US928497A (en) * | 1908-06-25 | 1909-07-20 | Lester L Carnahan | Gas-burner valve. |
| GB190901048A (en) * | 1909-01-15 | 1909-08-12 | John Baker Colbran | Improvements in and relating to Incandescent Gas Burners. |
| GB191302601A (en) * | 1913-01-31 | 1914-02-02 | Selas Lighting Company Ltd | Improvements in or relating to Valves or Adjustable Nipples for use with Gas or Vapour Burners. |
| CN201462854U (en) * | 2009-05-22 | 2010-05-12 | 宝山钢铁股份有限公司 | Dual-purpose combustion nozzle of mixed gas and natural gas for heating furnace and combustion system thereof |
| CN202835370U (en) * | 2012-08-08 | 2013-03-27 | 常州新奥燃气工程有限公司 | Water gas/natural gas dual-purpose burner |
| CN203364131U (en) * | 2013-06-18 | 2013-12-25 | 上海新中冶金设备厂 | Continuous casting machine baking nozzle capable of simultaneously using high-calorific-value high-pressure fuel and low-calorific-value low-pressure fuel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3180567B1 (en) * | 2014-08-15 | 2020-11-25 | Eclipse Inc. | Dual outlet burner and method |
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2018
- 2018-11-12 CN CN201811342305.5A patent/CN109277556B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US928497A (en) * | 1908-06-25 | 1909-07-20 | Lester L Carnahan | Gas-burner valve. |
| GB190901048A (en) * | 1909-01-15 | 1909-08-12 | John Baker Colbran | Improvements in and relating to Incandescent Gas Burners. |
| GB191302601A (en) * | 1913-01-31 | 1914-02-02 | Selas Lighting Company Ltd | Improvements in or relating to Valves or Adjustable Nipples for use with Gas or Vapour Burners. |
| CN201462854U (en) * | 2009-05-22 | 2010-05-12 | 宝山钢铁股份有限公司 | Dual-purpose combustion nozzle of mixed gas and natural gas for heating furnace and combustion system thereof |
| CN202835370U (en) * | 2012-08-08 | 2013-03-27 | 常州新奥燃气工程有限公司 | Water gas/natural gas dual-purpose burner |
| CN203364131U (en) * | 2013-06-18 | 2013-12-25 | 上海新中冶金设备厂 | Continuous casting machine baking nozzle capable of simultaneously using high-calorific-value high-pressure fuel and low-calorific-value low-pressure fuel |
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| Publication number | Publication date |
|---|---|
| CN109277556A (en) | 2019-01-29 |
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