CN102140564A - Inflatable gas sealing ring for top-blown converter - Google Patents
Inflatable gas sealing ring for top-blown converter Download PDFInfo
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- CN102140564A CN102140564A CN2011100410252A CN201110041025A CN102140564A CN 102140564 A CN102140564 A CN 102140564A CN 2011100410252 A CN2011100410252 A CN 2011100410252A CN 201110041025 A CN201110041025 A CN 201110041025A CN 102140564 A CN102140564 A CN 102140564A
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- converter
- gas
- wear ring
- oxygen
- coal gas
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to an inflatable gas sealing ring for top-blown converter, which belongs to the field of metallurgy. The gas sealing ring comprises a top-blown converter housing, molten steel, an oxygen-blowing gun, an oxygen gun hole, a converter gas collecting cover, a cover-top gas suction inlet, a gas fan, a nitrogen header pipe, a nitrogen regulating valve, a sealing ring evacuating valve, an oxygen gun sealing ring and an converter port sealing ring. When the top-blown converter is used for making steel, the pure oxygen blown out from the oxygen-blowing gun generates chemical reaction in the molten steel to generate converter gas which is collected to the converter gas collecting cover in the converter; and at a gap between the converter port and the converter gas collecting cover and a gap formed by the oxygen-blowing gun and the oxygen gun hole, the gas is then delivered to the converter port sealing ring and the oxygen gun sealing ring by the nitrogen regulating valve for expansion, so that the gas is isolated from outside air, and therefore, when the gas draught fan sucks the converter gas from the cover-top gas suction inlet, the inflatable gas sealing ring takes the sealing actions of preventing the gas from leaking out of the converter gas collecting cover and preventing air from entering the converter gas collecting cover.
Description
Technical field:
Technical name of the present invention is an inflatable top blown converter coal gas wear ring, belongs to field of metallurgy.It comprises top blown converter shell, molten steel, oxygen-blowing gun, oxygen rifle hole, coal gas of converter collecting hood, cover top coal gas suction port, gas fan, nitrogen header pipe, nitrogen relief valve, wear ring exhaust-valve, oxygen rifle wear ring and converter mouth wear ring.
Background technology:
The most oxygen top-blowns that adopt of smelter steel-making both at home and abroad at present, oxygen reacts the inflammable gas that is produced--coal gas of converter in molten steel in the STEELMAKING PRODUCTION process, normally reclaims with the coal gas of converter collecting hood that places the converter top.For preventing to cause an explosion accident in the inclusion of air coal gas of converter, in the coal gas of converter collecting hood, to keep malleation, and make coal gas of converter collecting hood and converter mouth keep certain distance, certainly will cause part gas leak like this, so that the RECOVERY OF CONVERTER GAS rate has only 35% to 60% usually, causes a large amount of coal gas losses.
Summary of the invention:
In order to remedy the deficiencies in the prior art, the present invention will provide a kind of inflatable top blown converter coal gas wear ring, oxygen rifle wear ring and converter mouth wear ring place oxygen rifle hole and coal gas of converter collecting hood cylindrical respectively, when not working, they paste coal gas of converter collecting hood cylindrical lower edge wall and oxygen rifle hole inwall, and be the following slotting and motion that recess does not influence oxygen-blowing gun and coal gas of converter collecting hood, charge oxygen Gun wear ring and converter mouth wear ring bulging behind the cryogenic high pressure nitrogen during work, coal gas in the blast furnace gas collecting hood and extraneous air are separated, the gap in gap between blast furnace gas collecting hood and converter mouth and oxygen-blowing gun and oxygen rifle hole is blocked sealing, make RECOVERY OF CONVERTER GAS not only safety but also reduce leak, because of nitrogen in ring mobile when making work temperature be controlled at proper range.
For reaching this purpose, it comprises top blown converter shell, molten steel, oxygen-blowing gun, oxygen rifle hole, coal gas of converter collecting hood, cover top coal gas suction port, gas fan, nitrogen header pipe, nitrogen relief valve, wear ring exhaust-valve, oxygen rifle wear ring and converter mouth wear ring inflatable top blown converter coal gas wear ring.During top-blown converter steelmaking, the coal gas of converter collecting hood is placed converter mouth top, insert in the converter molten steel in the oxygen Gun hole that oxygen-blowing gun passes on the coal gas collecting hood top, and the coal gas of converter that the chemical reaction generation takes place in molten steel the pure oxygen that blows out is pooled to the coal gas of converter collecting hood in converter.Fix the converter mouth wear ring that a circle is made up of high temperature resistant, air-locked flexible fabric on the edge of coal gas of converter collecting hood, also fix the oxygen Gun wear ring that a circle is made up of high temperature resistant, air-locked flexible fabric on the oxygen rifle hole; The high pressure nitrogen that nitrogen header pipe is sent here enters converter mouth wear ring and oxygen rifle wear ring respectively through two nitrogen relief valves, the bulging of converter mouth wear ring and oxygen rifle wear ring is got up and stifled tight the gap of converter mouth and coal gas of converter collecting hood and the formed gap of oxygen-blowing gun and oxygen rifle hole, coal gas and ambient atmos are isolated, play when gas fan when cover top coal gas suction port extracts coal gas of converter, prevent that coal gas from spilling and the sealing function of inclusion of air coal gas of converter collecting hood from the coal gas of converter collecting hood.
Description of drawings:
Fig. 1. inflatable top blown converter coal gas seal ring structure figure,
Fig. 2. wear ring A-A sectional view.
Wherein: 1--top blown converter shell; The 2--molten steel; The 3--oxygen-blowing gun; 4--oxygen rifle hole; 5--coal gas of converter collecting hood; 6--cover top coal gas suction port; The 7--gas fan; The 8--nitrogen header pipe; 9--nitrogen relief valve; 10--wear ring exhaust-valve; 11--oxygen rifle wear ring; 12--converter mouth wear ring.
Case study on implementation:
Fig. 1. also be 120 tons of converter inflatable top blown converter coal gas seal ring structure figure.It comprises: top blown converter shell 1, molten steel 2, oxygen-blowing gun 3, oxygen rifle hole 4, coal gas of converter collecting hood 5, cover top coal gas suction port 6, gas fan 7, nitrogen header pipe 8, nitrogen relief valve 9, wear ring exhaust-valve 10, oxygen rifle wear ring 11 and converter mouth wear ring 12.During top-blown converter steelmaking, coal gas of converter collecting hood 5 is placed converter mouth top, insert in the converter molten steel 2 in the oxygen rifle hole 4 that oxygen-blowing gun 3 passes on the coal gas collecting hood top, and the coal gas of converter that the chemical reaction generation takes place in molten steel 2 pure oxygen that blows out is pooled in converter in the coal gas of converter collecting hood 5.The fixing converter mouth wear ring of being made up of high temperature resistant air-locked flexible fabric 12 on the circumference is also fixed the oxygen rifle wear ring 11 that high temperature resistant air-locked flexible fabric is formed on the edge of coal gas of converter collecting hood 5 on the circumference in oxygen rifle hole 4; Cryogenic high pressure nitrogen is sent here by nitrogen header pipe 8 and is entered converter mouth wear ring 12 and oxygen rifle wear ring 11 respectively through two nitrogen relief valves 9, make converter mouth wear ring 12 and oxygen Gun wear ring 11 bulging, and it is stifled tight the gap of converter mouth and coal gas of converter collecting hood 5 and oxygen-blowing gun 3 with 4 formed gaps, oxygen rifle hole, coal gas and ambient atmos are isolated, when gas fan 7 extracts coal gas of converter from covering top coal gas suction port 6, prevent coal gas from coal gas of converter collecting hood 5 spill and inclusion of air coal gas of converter collecting hood 5, play safety and sealing function, and can reclaim coal gas of converter to greatest extent.
Claims (2)
1. inflatable top blown converter coal gas wear ring, it comprises top blown converter shell 1, molten steel 2, oxygen-blowing gun 3, oxygen rifle hole 4, coal gas of converter collecting hood 5, cover top coal gas suction port 6, gas fan 7, nitrogen header pipe 8, nitrogen relief valve 9, wear ring exhaust-valve 10, oxygen rifle wear ring 11 and converter mouth wear ring 12; Coal gas of converter collecting hood 5 places converter shell 1 top, and insert in the converter molten steel 2 in the oxygen rifle hole 4 that oxygen-blowing gun 3 passes on coal gas of converter collecting hood 5 tops; Be fixed with converter mouth wear ring 12 on the edge of coal gas of converter collecting hood 5, also fixing oxygen rifle wear ring 11 on the oxygen rifle hole 4; Nitrogen header pipe 8 links fixed with the inlet of two nitrogen relief valves 9 respectively, and the outlet of nitrogen relief valve 9 with link fixedly with the inlet end of converter mouth wear ring 12 and oxygen rifle wear ring 11 respectively, the exhaust side of converter mouth wear ring 12 and oxygen rifle wear ring 11 links fixed with wear ring exhaust-valve 10 respectively.
2. the contained converter mouth wear ring 12 of inflatable top blown converter coal gas wear ring as claimed in claim 1, it is characterized in that converter mouth wear ring 12 is a kind of thin wall circular of being made by the high-temperature-resistant flexible material, the outlet of the inlet end of annulus and nitrogen relief valve 9 links fixed, and the exhaust side of annulus and wear ring exhaust-valve 10 inlets link fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100410252A CN102140564A (en) | 2011-04-08 | 2011-04-08 | Inflatable gas sealing ring for top-blown converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100410252A CN102140564A (en) | 2011-04-08 | 2011-04-08 | Inflatable gas sealing ring for top-blown converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102140564A true CN102140564A (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100410252A Pending CN102140564A (en) | 2011-04-08 | 2011-04-08 | Inflatable gas sealing ring for top-blown converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102140564A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929627A (en) * | 2017-04-10 | 2017-07-07 | 首钢总公司 | A kind of top and bottom combined blown converter |
| CN111922329A (en) * | 2019-05-13 | 2020-11-13 | 天工爱和特钢有限公司 | Novel argon gas safety cover of pouring usefulness is smelted to mould steel |
-
2011
- 2011-04-08 CN CN2011100410252A patent/CN102140564A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106929627A (en) * | 2017-04-10 | 2017-07-07 | 首钢总公司 | A kind of top and bottom combined blown converter |
| CN111922329A (en) * | 2019-05-13 | 2020-11-13 | 天工爱和特钢有限公司 | Novel argon gas safety cover of pouring usefulness is smelted to mould steel |
| CN111922329B (en) * | 2019-05-13 | 2024-04-26 | 江苏天工爱和科技有限公司 | Novel argon protection cover for die steel smelting and casting |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110803 |