CN204224640U - A kind of AOD spray gun - Google Patents
A kind of AOD spray gun Download PDFInfo
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- CN204224640U CN204224640U CN201420694225.7U CN201420694225U CN204224640U CN 204224640 U CN204224640 U CN 204224640U CN 201420694225 U CN201420694225 U CN 201420694225U CN 204224640 U CN204224640 U CN 204224640U
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- spray gun
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- red copper
- cast iron
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Abstract
Of the present utility modelly provide a kind of AOD spray gun, it is characterized in that, concrete structure is: pipe core (1) is connected with red copper bolt (5) swelling, and metal bar (2) to be located in pipe core (1) and to be connected with red copper bolt (5); Sleeve pipe (9) is provided with outside pipe core (1), sleeve pipe (9) one end is welded with cast iron pipe (3), and cast iron pipe (3) the other end is connected with red copper bolt (5) by cast iron threeway (4); The other end of red copper bolt (5) is connected with 1 cun of rapid-acting coupling (6); Cast iron threeway (4) is also connected with a cast-iron bend (8), and cast-iron bend (8) the other end is connected with one 3/4 cun rapid-acting coupling (7).Adopt this spray gun on the basis ensureing quality of molten steel, the work-ing life of refractory materials can be improved, thus reduce ton steel production cost.
Description
Technical field
The utility model belongs to casting equipment field, provides a kind of AOD spray gun especially.
Background technology
AOD technique is by argon (or nitrogen) and oxygen mixing, carries out the technique of Decarburising and refining according to technique by different ratios in the metal pool being blown into melting.This technique is the patent technique that American Association Carbide has the refined molten steel of license authorizes, rises in the metal research laboratory of Niagara Falls city Union Carbide Corp in 1954.AOD rectification systems is made up of body of heater and drive system, vavle shelf system, Controlling System three parts.
Spray gun is in fact equipment process for making gas and cooling gas being blown into molten liquid steel, according to specific pressure, flow, realizes special process function.AOD spray gun is the air feed core component of AOD refining furnace, the oxygen of source of the gas, argon, nitrogen direct admission valve frame system, instruction is sent by processing requirement by supervisory control desk, by the element of pneumatic ball valve various in vavle shelf, variable valve, transmitter, gas is pressed different ratios mixing, by different pressures, Flow-rate adjustment, export two-way gas by spray gun to body of heater molten steel inside, realize refinery practice operation.
Tradition AOD spray gun adopts double-layer sleeve structure, and pipe core is copper material, the gas mixture of main logical oxygen or oxygen and rare gas element, and sleeve pipe leads to noble gas, for cooling pipe core spray gun, not melt by high-temperature molten steel.
The concentration problem that this kind of spray gun reflects is that refractory materials air port area loss is large, this is because the Oxygen Flow high pressure of original design spray gun concentrates injection, 1, produce larger jet power, molten steel recoil region, air port refractory materials, strong physics washes away acceleration refractory consumption rate; 2, concentrate the air-flow sprayed to produce larger bubble floating, the cavitation effect that bubble eruption produces accelerates the loss of region, air port refractory materials.
Utility model content
For prior art Problems existing, of the present utility modelly provide a kind of long-life AOD spray gun, this spray gun can on the gas supply capacity basis not reducing AOD spray gun, the former single stream injected in molten steel is dispersed into ring-type and injects molten steel, thus the molten steel jet power that reduction air-flow causes, reduce and tuyere zone refractory materials physics is washed away, make the air pocket sprayed in molten steel be dispersed into some small bubbles simultaneously, reduce gas to the cavitation effect of refractory materials.Adopt this spray gun on the basis ensureing quality of molten steel, the work-ing life of refractory materials can be improved, thus reduce ton steel production cost.
The utility model specifically provides a kind of AOD spray gun, comprises pipe core 1, cast iron pipe 3, cast iron threeway 4,5, the 1 cun of rapid-acting coupling of red copper bolt 6,3/4 cun of rapid-acting coupling 7, cast-iron bend 8 and sleeve pipe 9;
It is characterized in that, in pipe core 1, be also provided with metal bar 2, the concrete structure of described AOD spray gun is as follows: pipe core 1 is connected with red copper bolt 5 swelling, and metal bar 2 to be located in pipe core 1 and to be connected with red copper bolt 5; Be provided with sleeve pipe 9 outside pipe core 1, sleeve pipe 9 one end is welded with cast iron pipe 3, and cast iron pipe 3 the other end is connected with red copper bolt 5 by cast iron threeway 4; The other end of red copper bolt 5 is connected with 1 cun of rapid-acting coupling 6; Cast iron threeway 4 is also connected with a cast-iron bend 8, and cast-iron bend 8 the other end is connected with 3/4 cun of rapid-acting coupling 7.
AOD spray gun described in the utility model, is characterized in that: for ensureing that gas flow is constant, add metal bar 2 rear center pipe 1 sectional area S
1, metal bar 2 sectional area S
2and the pass between the pipe core 1 sectional area S not adding metal bar is: S
1-S
2=S.Described metal bar 2 is identical with the length of pipe core 1.
The utility model advantage:
1, retain all advantages of traditional design, make pipe core process gas form circulation and spray.And it is not metal bar can keep central position in pipe core, eccentric.
2, reduce the molten steel jet power that gas injection causes, reduce the physics of molten steel to the resistance to material in tuyere zone and wash away.
3, make former column spray after thick air-flow becomes ring-type, a small amount of air pocket produced in molten steel becomes small and dense small bubbles, reduces cavitation effect to the loss of tuyere zone refractory materials.
4, directly improve refractory life, reduce ton steel production cost, increase the economic benefit of enterprise.
Accompanying drawing explanation
Figure 1A OD spray gun structure schematic diagram.
Fig. 2 AOD spray gun partial enlarged drawing.
Embodiment
Embodiment
As shown in Figure 1, 2, AOD spray gun described in the present embodiment comprises pipe core 1, metal bar 2, cast iron pipe 3, cast iron threeway 4,5, the 1 cun of rapid-acting coupling of red copper bolt 6,3/4 cun of rapid-acting coupling 7, cast-iron bend 8 and sleeve pipe 9, and concrete structure is as follows:
Pipe core 1 is connected with red copper bolt 5 swelling, and metal bar 2 to be located in pipe core 1 and to be connected with red copper bolt 5, and metal bar 2 is identical with the length of pipe core 1; Be provided with sleeve pipe 9 outside pipe core 1, sleeve pipe 9 one end is welded with cast iron pipe 3, and cast iron pipe 3 the other end is connected with red copper bolt 5 by cast iron threeway 4, is all threaded connection between cast iron pipe 3, cast iron threeway 4, red copper bolt 5; The other end of red copper bolt 5 is threaded with 1 cun of rapid-acting coupling 6; Cast iron threeway 4 is also connected with a cast-iron bend 8, and cast-iron bend 8 the other end and 3/4 cun of rapid-acting coupling 7 are threaded connection.
Under this AOD spray gun can run on the pressure of 0-18bar, when AOD technique is carried out, oxygen and rare gas element are necessary process gass, are blown in the molten steel of melting by having bilayer structure (pipe core 1 and sleeve pipe 9), AOD spray gun is through refractory materials, and outlet directly contacts with molten steel.
Pipe core 1 leads to gaseous oxygen and inert gas argon or nitrogen or carbonic acid gas (title process gas), primary responsibility refined molten steel; Sleeve pipe 9 leads to argon or nitrogen or carbonic acid gas, primary responsibility cooling pipe core.
Under PLC, process control instrument or manual control, by the flow set, pressure, by oxygen, the gases such as argon (nitrogen) are blown in AOD furnace body by the pipe core 1 of spray gun and sleeve pipe 9 and carry out liquid steel refining technological operation, former single stream is mainly disperseed by the effect of metal bar 2, forms annular flow and is blown in molten steel, reduce molten steel jet power, and make the former air pocket be blown in molten steel be dispersed into small bubbles, reduce cavitation effect.
The each component function explanation of table 1
| Label | Parts | Function declaration |
| 1 | Pipe core | Logical process gas |
| 2 | Metal bar | Gas is made to form ring-type |
| 3 | Cast iron pipe | Fixed sleeving |
| 4 | Cast iron threeway | Connect 3,5 and 8 |
| 5 | Red copper bolt | Be connected with pipe core, logical process gas |
| 6 | 1 cun of rapid-acting coupling | Be connected fast with pipeline or disconnect |
| 7 | 3/4 cun connects fast | Be connected fast with pipeline or disconnect |
| Head | ||
| 8 | Cast-iron bend | Be connected with 4,7 |
| 9 | Sleeve pipe | Logical cooling gas |
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model spirit change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (3)
1. an AOD spray gun, comprises pipe core (1), cast iron pipe (3), cast iron threeway (4), red copper bolt (5), 1 cun of rapid-acting coupling (6), 3/4 cun of rapid-acting coupling (7), cast-iron bend (8) and sleeve pipe (9);
It is characterized in that, metal bar (2) is also provided with in pipe core (1), the concrete structure of described AOD spray gun is as follows: pipe core (1) is connected with red copper bolt (5) swelling, and metal bar (2) to be located in pipe core (1) and to be connected with red copper bolt (5); Sleeve pipe (9) is provided with outside pipe core (1), sleeve pipe (9) one end is welded with cast iron pipe (3), and cast iron pipe (3) the other end is connected with red copper bolt (5) by cast iron threeway (4); The other end of red copper bolt (5) is connected with 1 cun of rapid-acting coupling (6); Cast iron threeway (4) is also connected with a cast-iron bend (8), and cast-iron bend (8) the other end is connected with one 3/4 cun rapid-acting coupling (7).
2. according to AOD spray gun described in claim 1, it is characterized in that: add metal bar (2) rear center pipe (1) sectional area S
1, metal bar (2) sectional area S
2and the pass between pipe core (1) the sectional area S not adding metal bar is: S
1-S
2=S.
3. according to AOD spray gun described in claim 1, it is characterized in that: described metal bar (2) is identical with the length of pipe core (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694225.7U CN204224640U (en) | 2014-11-18 | 2014-11-18 | A kind of AOD spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420694225.7U CN204224640U (en) | 2014-11-18 | 2014-11-18 | A kind of AOD spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204224640U true CN204224640U (en) | 2015-03-25 |
Family
ID=52922758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420694225.7U Active CN204224640U (en) | 2014-11-18 | 2014-11-18 | A kind of AOD spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204224640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458238A (en) * | 2020-10-19 | 2021-03-09 | 宝钢工程技术集团有限公司 | Novel AOD spiral side gun |
-
2014
- 2014-11-18 CN CN201420694225.7U patent/CN204224640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458238A (en) * | 2020-10-19 | 2021-03-09 | 宝钢工程技术集团有限公司 | Novel AOD spiral side gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 110022 No. 17 Yunfeng Street South, Tiexi District, Liaoning, Shenyang Patentee after: Shenyang Foundry Research Institute Co., Ltd. of China National Machinery Research Institute Group Address before: 110022 No. 17 Yunfeng Street South, Tiexi District, Liaoning, Shenyang Patentee before: SHENYANG RESEARCH INSTITUTE OF FOUNDRY Co.,Ltd. Address after: 110022 No. 17 Yunfeng Street South, Tiexi District, Liaoning, Shenyang Patentee after: SHENYANG RESEARCH INSTITUTE OF FOUNDRY Co.,Ltd. Address before: 110022 No. 17 Yunfeng Street South, Tiexi District, Liaoning, Shenyang Patentee before: Shenyang Research Institute OF Foundry |
|
| CP01 | Change in the name or title of a patent holder |