CN2612676Y - Bottom gas supply device of combined blown converter - Google Patents
Bottom gas supply device of combined blown converter Download PDFInfo
- Publication number
- CN2612676Y CN2612676Y CN 03234007 CN03234007U CN2612676Y CN 2612676 Y CN2612676 Y CN 2612676Y CN 03234007 CN03234007 CN 03234007 CN 03234007 U CN03234007 U CN 03234007U CN 2612676 Y CN2612676 Y CN 2612676Y
- Authority
- CN
- China
- Prior art keywords
- air feed
- steel
- backing plate
- pipe
- tail pipe
- 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 - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000011449 brick Substances 0.000 claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 abstract description 9
- 238000009628 steelmaking Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 30
- 238000003723 Smelting Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A bottom gas supply device of a combined blown converter relates to the steel-making technology, in particular to a bottom blowing gas supply device of a steel-making converter. The utility model provides a steelmaking converter bottom blowing air feeder, including air feed tail pipe and air feed steel pipe, the air feed tail pipe passes through the hose and is connected with the air feed steel pipe. The hose is a metal hose. The converter bottom steel plate is fixedly connected with the gas supply tail pipe. The backing plate has a backing plate hole, the backing plate forms two half orifice plates after the bisection, presss from both sides tight the fixing in the backing plate hole with the air feed tail pipe, and two half orifice plates spot welding are fixed in converter bottom steel board. The utility model discloses can show the influence that reduces high-frequency vibration to the air brick, alleviate or avoided air brick capillary hole blocking phenomenon, improve the life of air brick.
Description
Technical field
The utility model relates to steel-smelting technology, particularly to the device of steel-making converter bottom blowing gas.
Background technology
Using bottom blowing to smelt in the method process for making, bottom-blown air brick is not long work-ing life, uses in the near future afterbody source of the gas to occur and leaks, and causes bleed pressure to descend, and causes the obstruction of gas permeable brick pore.Arrange analysis from the installation of converter gas permeable brick and the welding of air feed steel pipe, as Fig. 1 and Fig. 2, the major cause that the build-up of pressure source of the gas leaks has:
1, gas permeable brick air chamber bottom plate hole (10 millimeters of thickness) has adopted manual angle seam welding with the air feed tail pipe, high about 3 millimeters of fillet weld, during indivedual gas permeable brick tail pipe wall welding positions welding by the local melting loss of electric arc, tube wall mother metal thickness is reduced, the welding stress that postwelding does not produce steel pipe annular angle weld seam is again eliminated, form stress concentration, the easy fatigue cracking of tube wall weld seam under high-frequency vibration at this place.
When 2, gas permeable brick being installed, the gas permeable brick air feed tail pipe that external diameter is 32 millimeters inserts in the pre-opened hole about 70 millimeters on the permanent layer of anti-material brick of furnace bottom and the steel plate of furnace hearth, tail pipe and the welding of extraneous air feed steel pipe.When steel-making smelting and non-smelting, in the smelting early stage and the later stage of smelting, the pressure of different flow and the source of the gas medium of checker (nitrogen and argon gas) have been adopted in the bottom blowing operation, when draw when being about 8 meters bottom blowing gas steel pipes at the bottom of being installed in converter at the air communication ring trunnion place that associates, air-supply duct will produce high-frequency vibration, under the effect of high temperature and high-frequency vibration, the fillet weld of gas permeable brick air chamber bottom plate hole and air feed steel pipe produces fatigue cracking and leaks, gas permeable brick air chamber bleed pressure is descended, cause the gas permeable brick pore to stop up.
The utility model content
The purpose of this utility model provides and a kind ofly is intended to improve gas permeable brick work-ing life, reduces high-frequency vibration to the influence of gas permeable brick, the air feeder that alleviates or avoid the gas permeable brick pore to stop up.
The purpose of this utility model is achieved in that provides a kind of combined blown converter bottom gas-feeding device, comprises air feed tail pipe and air feed steel pipe, and described air feed tail pipe is connected with the air feed steel pipe by flexible pipe.
Described flexible pipe is a metallic hose.
Also comprise at least one backing plate, steel plate is fixedlyed connected at the bottom of described backing plate and air feed tail pipe and the converter.Described backing plate has a backing plate hole, and described backing plate forms two and half orifice plates to cuing open the back, and the air feed tail pipe is fixedly clamped in the backing plate hole, and steel plate at the bottom of the converter is fixed in two and half orifice plate spot welding.
The beneficial effects of the utility model are, can significantly reduce the influence of high-frequency vibration to gas permeable brick, alleviate or have avoided gas permeable brick pore latch up phenomenon, the work-ing life of having improved gas permeable brick.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the bottom blowing steel melting furnace synoptic diagram that has air feeder.
Fig. 2 is existing air feeder synoptic diagram.(I partial enlarged drawing)
Fig. 3 is the synoptic diagram of the utility model embodiment.
Among the above-mentioned figure: 1, steel plate 5, air feed tail pipe fixed orifices backing plate 6, flange-connection stainless steel metal flexible pipe 7, bottom blowing gas steel pipe 8, gas permeable brick air chamber at the bottom of bottom-blown air brick 2, converter lining refractory brick 3, air feed tail pipe 4, the converter
Embodiment
Combined blown converter bottom gas-feeding device as shown in Figure 3 comprises gas permeable brick air feed tail pipe 3 and air feed steel pipe 7, and described air feed tail pipe 3 is connected with air feed steel pipe 7 by flange-connection stainless steel metal flexible pipe 6.Described flange-connection stainless steel metal flexible pipe 6 one ends adopt 90 ° of toggle joints to be connected with gas permeable brick tail pipe 3, and the other end is connected with air feed steel pipe 7.Adopt spherical movable joint to be connected between flange-connection stainless steel metal flexible pipe 6 and air feed steel pipe 7 or the air feed tail pipe 3.
Described flange-connection stainless steel metal flexible pipe 6 is slightly crooked when installing, purpose is the influence to gas permeable brick tail pipe fillet weld of the air feed steel pipe produced when air pressure and source of the gas medium alternately changed when utilizing the flexibility decay of metallic hose or blocking-up bottom blowing high-frequency vibration, prevent that gas permeable brick tail pipe weld seam from producing fatigue cracking, guarantees bleed pressure.
Adopt a steel plate with holes as gas permeable brick air feed tail pipe fixed orifices backing plate 5 at place, steel plate of furnace hearth hole, the steel plate hole diameter is greater than air-supply duct external diameter 1-2 millimeter.During installation with described backing plate from the center, hole to cutting open, the gas permeable brick tail pipe is fixedly clamped in the backing plate hole, again the solid welding of two half block orifice plate peripheral point is fixed on the steel plate of furnace hearth 4.
Claims (7)
1, combined blown converter bottom gas-feeding device comprises gas permeable brick air feed tail pipe (3) and air feed steel pipe (7), it is characterized in that, described air feed tail pipe (3) is connected with air feed steel pipe (7) by flexible pipe (6).
2, combined blown converter bottom gas-feeding device as claimed in claim 1 is characterized in that, described flexible pipe (6) is a metallic hose.
3, combined blown converter bottom gas-feeding device as claimed in claim 1 is characterized in that, described flexible pipe (6) is a flange-connection stainless steel metal flexible pipe.
4, as claim 1,2 or 3 described combined blown converter bottom gas-feeding devices, it is characterized in that described flexible pipe (6) is bending.
5, as claim 1,2 or 3 described combined blown converter bottom gas-feeding devices, it is characterized in that, adopt spherical movable joint to be connected between described flexible pipe (6) and air feed steel pipe (7) or the air feed tail pipe (3).
6, as claim 1,2 or 3 described combined blown converter bottom gas-feeding devices, it is characterized in that, also comprise at least one backing plate (5), steel plate (4) is fixedlyed connected at the bottom of described backing plate (5) and air feed tail pipe (3) and the converter.
7, combined blown converter bottom gas-feeding device as claimed in claim 6, it is characterized in that described backing plate (5) has a backing plate hole, described backing plate (5) forms two and half orifice plates to cuing open the back, air feed tail pipe (3) is fixedly clamped in the backing plate hole, and steel plate (4) at the bottom of the converter is fixed in two and half orifice plate spot welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03234007 CN2612676Y (en) | 2003-04-17 | 2003-04-17 | Bottom gas supply device of combined blown converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03234007 CN2612676Y (en) | 2003-04-17 | 2003-04-17 | Bottom gas supply device of combined blown converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2612676Y true CN2612676Y (en) | 2004-04-21 |
Family
ID=34166061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03234007 Expired - Fee Related CN2612676Y (en) | 2003-04-17 | 2003-04-17 | Bottom gas supply device of combined blown converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2612676Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371463C (en) * | 2005-07-22 | 2008-02-27 | 钢铁研究总院 | Combined-blowing converter bottom gas supply element blocking-preventing device and method |
| CN106825533A (en) * | 2015-12-03 | 2017-06-13 | 刘得顺 | A kind of preparation method for repairing combined air brick |
| WO2017103959A1 (en) * | 2015-12-17 | 2017-06-22 | 東京窯業株式会社 | Bottom-blowing plug with improved workability |
| CN108220526A (en) * | 2018-03-23 | 2018-06-29 | 嘉兴市乍浦杭湾重型机械有限公司 | A kind of steelmaking converter forging |
-
2003
- 2003-04-17 CN CN 03234007 patent/CN2612676Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371463C (en) * | 2005-07-22 | 2008-02-27 | 钢铁研究总院 | Combined-blowing converter bottom gas supply element blocking-preventing device and method |
| CN106825533A (en) * | 2015-12-03 | 2017-06-13 | 刘得顺 | A kind of preparation method for repairing combined air brick |
| WO2017103959A1 (en) * | 2015-12-17 | 2017-06-22 | 東京窯業株式会社 | Bottom-blowing plug with improved workability |
| CN107109502A (en) * | 2015-12-17 | 2017-08-29 | 东京窑业株式会社 | The bottom blowing connector of lifting construction |
| JPWO2017103959A1 (en) * | 2015-12-17 | 2018-09-20 | 東京窯業株式会社 | Bottom blow plug with improved workability |
| CN108220526A (en) * | 2018-03-23 | 2018-06-29 | 嘉兴市乍浦杭湾重型机械有限公司 | A kind of steelmaking converter forging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040421 |