CN212404155U - Dip pipe - Google Patents
Dip pipe Download PDFInfo
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- CN212404155U CN212404155U CN202021223228.4U CN202021223228U CN212404155U CN 212404155 U CN212404155 U CN 212404155U CN 202021223228 U CN202021223228 U CN 202021223228U CN 212404155 U CN212404155 U CN 212404155U
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Abstract
A dip pipe relates to the field of steel secondary refining, and comprises a dip pipe body and a dip pipe, wherein the dip pipe body comprises a pouring material, a steel structure, a self-flowing material and a working lining brick which are sequentially arranged from outside to inside; the lower row of argon gas pipe branch pipes c are arranged and penetrate through the lower portion of the dip pipe body respectively, the distance from the lower edge of the dip pipe body to the lower edge of the dip pipe body is 1/4-1/3 of the height of the whole dip pipe body, the upper row of argon gas pipe branch pipes b and the lower row of argon gas pipe branch pipes c are arranged perpendicular to the central axis of the dip pipe body respectively, and the lower row of argon gas pipe branch pipes b and the lower row of argon gas pipe branch pipes c are distributed in an inclined mode at equal intervals.
Description
Technical Field
The utility model relates to a steel stove external refining field especially relates to a dip pipe.
Background
Vacuum refining is a refining means commonly used in the current steel production, can produce high-quality steel with high purity, and meets the increasingly high use requirements. The RH vacuum refining method is the fastest refining speed in a plurality of vacuum refining devices, can coordinate with other smelting links, receives general attention of metallurgy workers in recent years, and is vigorously developed.
The RH vacuum refining process features that two soaking pipes communicated with the vacuum chamber are set in the lower part of the vacuum chamber, the soaking pipes are inserted into molten steel during degassing treatment, the molten steel is made to enter the vacuum degassing chamber via the circulating pipe by means of the pressure difference created after the vacuum chamber is vacuumized, and inert gas, such as argon and nitrogen, is blown into the soaking pipes continuously and expands fast under the action of the high temperature of the molten steel and the low pressure in the upper part of the vacuum chamber to drive the molten steel to move upwards.
The dip pipe is composed of a steel structure, a casting material outside the steel shell, a self-flowing material inside the steel shell and a working lining brick four-layer structure, wherein an argon pipeline is buried. At present, the argon pipe outlet sections are perpendicular to the central axis of the immersion pipe, the argon pipe outlet sections are arranged in opposite directions at equal intervals, and the central lines of the outlet sections are intersected with the central axis of the immersion pipe. During refining, the bubble groups discharged from each argon pipe move upwards in a nearly parabolic form. This design has certain limitations: the argon gas pipe arrangement design ensures that discharged gas bubbles respectively move upwards in a near-parabolic form under the action of buoyancy and upper vacuum, the stirring capacity is relatively weak, the consumed time for cleaning and purifying molten steel, homogenizing components and temperature and the like is long, the refining efficiency is low, and the temperature drop of the molten steel is large; for the working lining brick of the dip pipe, the service life is low because the working lining brick is in severe environments such as high temperature, erosion and scouring of slag/molten steel and the like for a long time.
Therefore, it is a basic requirement of those skilled in the art to provide a dip pipe which can improve the circulation flow efficiency of molten steel in the refining process and prolong the service life of the refractory lining of the dip pipe.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the background art, the utility model discloses a dip pipe.
In order to realize the purpose, the utility model adopts the following technical scheme:
a dip pipe comprises a dip pipe body, wherein the dip pipe body comprises a pouring material, a steel structure, a self-flowing material and a working lining brick which are sequentially arranged from outside to inside, and argon pipes penetrate through the steel structure, the self-flowing material and the working lining brick and comprise a main pipe a, an upper argon pipe branch pipe b and a lower argon pipe branch pipe c; the lower row of argon gas pipe branch pipes c are arranged on the lower portion of the dip pipe body in a penetrating mode respectively, the distance from the lower edge of the dip pipe body to the lower edge of the dip pipe body is 1/4-1/3 of the height of the whole dip pipe body, and the upper row of argon gas pipe branch pipes b and the lower row of argon gas pipe branch pipes c are arranged perpendicular to the central axis of the dip pipe body respectively and are distributed in an inclined mode at equal intervals;
the steel structure comprises a steel liner a, an anchoring piece b and a flange c, the steel liner a is arranged between the self-flowing material and the casting material, the steel liner a is fixed with the casting material through the anchoring piece b, the flange c is fixed outside the steel liner a and positioned at the upper edge, and the inner surface of the working lining brick is provided with a coating;
be responsible for a right angle body and the ring channel including the intercommunication setting, the ring channel is not closed ring, the horizontal pipe setting of right angle body is in the outside of pouring material, the lower part and the middle part of the vertical pipe of right angle body communicate respectively has the ring channel, the vertical setting of vertical pipe is in the pouring material, and be close to the inner face setting of pouring material, two ring channels are respectively along steel courage an's circumferencial direction and are located the pouring material, the outer end of going up argon discharge pipe branch pipe b and lower row argon discharge pipe branch pipe c respectively with the middle part ring channel, lower part ring channel intercommunication, and go up argon discharge pipe branch pipe b and lower row argon discharge pipe branch pipe c and pass from the material of flowing respectively, work lining brick and coating set up inside the.
The dip pipe is characterized in that the upper argon exhaust pipe branch pipe b and the lower argon exhaust pipe branch pipe c are arranged in a vertically staggered manner.
The thickness of the coating of the dip pipe is 0.5-1 mm.
The upper port of the pouring material of the dip pipe is positioned at the upper part of the steel liner a.
Since the technical scheme is used, the utility model discloses following beneficial effect has:
the utility model discloses a dip pipe, the equal perpendicular to axis and the equidistance of dip pipe body of last argon gas branch pipe b5 of going up and lower argon gas branch pipe c5 distribute, the central line of going up argon gas branch pipe b5 and lower argon gas branch pipe c5 of going up is equidistance slope distribution, during the refining, the argon gas bubble that the argon gas pipe was discharged is spiral ascending form, and not straight line or parabola rise, this kind of characteristics can make the molten steel form stronger disturbance, accelerated gas-liquid, liquid-liquid (like steel-slag desulfurization), the alloy in the molten steel melts and reacts, and increased the area of contact between molten steel-argon gas, and then improved two alternate mass transfer rate, refining effect and production capacity promote, the molten steel temperature reduces, do benefit to energy saving and consumption reduction; because the argon pipes are designed to be distributed in an equidistant and inclined mode, the refining efficiency is greatly improved, the duration of the working lining brick in a severe environment is relatively shortened on the premise of achieving the same refining effect, and the effective service life is prolonged.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view showing the development of an argon gas tube;
in the figure: 1. pouring a material; 2. a steel structure 2a, a steel liner 2b, an anchoring piece 2c and a flange; 3. self-flowing; 4. working lining bricks; 5. an argon pipe 5a, a main pipe 5b, an upper argon exhaust pipe branch pipe 5 c and a lower argon exhaust pipe branch pipe 5 c; 6. and (4) coating.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The dip pipe described in conjunction with the attached drawings 1-3 comprises a dip pipe body, wherein the dip pipe body comprises a pouring material 1, a steel structure 2, a self-flowing material 3 and a working lining brick 4 which are sequentially arranged from outside to inside, argon pipes 5 are arranged on the steel structure 2, the self-flowing material 3 and the working lining brick 4 in a penetrating manner, each argon pipe 5 comprises a main pipe a5, an upper argon exhaust pipe branch pipe b5 and a lower argon exhaust pipe branch pipe c5, and a plurality of upper argon exhaust pipe branch pipes b5 are arranged and respectively arranged in the middle of the dip pipe body in a penetrating manner; the lower row of argon gas branch pipes c5 are arranged on the lower portion of the dip pipe body in a penetrating mode respectively, the distance from the lower edge of the dip pipe body to the lower edge of the dip pipe body is 1/4-1/3 of the height of the whole dip pipe body, and the upper row of argon gas branch pipes b5 and the lower row of argon gas branch pipes c5 are arranged perpendicular to the central axis of the dip pipe body and are distributed in an inclined mode at equal intervals;
the steel structure 2 comprises a steel liner a2, an anchoring piece b2 and a flange 2c, the steel liner a2 is arranged between the self-flowing material 3 and the casting material 1, the steel liner a2 is fixed with the casting material 1 through the anchoring piece b2, the flange 2c is fixed outside the steel liner a2 and positioned at the upper edge, and the inner surface of the working lining brick 4 is provided with a coating 6;
be responsible for a5 including the right angle body and the ring pipe that the intercommunication set up, the ring pipe is not closed ring, the horizontal pipe setting of right angle body is in the outside of pouring material 1, the lower part and the middle part of the vertical pipe of right angle body communicate respectively has the ring pipe, vertical setting of vertical pipe is in pouring material 1, and be close to the inner face setting of pouring material 1, two ring pipes are respectively along steel container a 2's circumferencial direction and are located pouring material 1, the outer end of going up argon gas branch pipe b5 and lower row of argon gas branch pipe c5 respectively with the middle part ring pipe, lower part ring pipe intercommunication, and go up argon gas branch pipe b5 and lower row of argon gas branch pipe c5 and pass respectively from flowing material 3, work lining brick 4 and coating 6 set up inside the dip pipe body.
The dip pipe, the upper row argon pipe branch pipe b5 and the lower row argon pipe branch pipe c5 are arranged in a vertically staggered mode.
The dip pipe comprises the following components in percentage by mass: 75-85% of MgO with the median diameter granularity of 5-10 mu m, 8-15% of magnesia-alumina spinel with the median diameter granularity of 2-5 mu m, 3-5% of Al powder with the median diameter granularity of 10-15 mu m, 1-3% of activated alumina micro powder with the median diameter granularity of 2-3 mu m and TiO with the median diameter granularity of 2-10 mu m21-3% of binder and 2-3% of binder.
The adhesive of the immersion pipe is one or the combination of any two of resin, magnesium aluminum sol or magnesium aluminate.
The thickness of the coating 6 of the dip pipe is 0.5-1 mm.
The upper port of the pouring material 1 of the dip pipe is positioned at the upper part of the steel container a 2.
The manufacturing method of the dip pipe comprises the following specific operation steps:
(1) preparing a steel structure 2: welding the anchoring piece b2 and the flange 2c on the steel container a2 by adopting secondary shielded welding according to the design requirement;
(2) and (3) forming a hole in the working lining brick by using an argon pipe 5: drilling holes in the dried working lining bricks 4 according to design requirements;
(3) assembling the working lining ring bricks: pre-assembling 4 rows of the ground and cut qualified working lining bricks, bonding the qualified working lining bricks into a whole by using a cementing agent, punching 2-3 rings of steel bands outside the ring bricks by using an air compressor, and fastening the ring bricks;
(4) preparation of working lining ring brick containing surface coating 6: spraying a coating 6 on the inner surface of the tightened working lining ring brick 4 by adopting a wet spraying or plasma spraying mode, and drying for 6-18 hours in a drying kiln at the temperature of 100-200 ℃ after spraying; wherein, the coating 6 comprises the following components by mass percent: 85 parts of MgO with the median diameter granularity of 5-10 mu m, 6 parts of magnesia-alumina spinel with the median diameter granularity of 2-5 mu m, 3 parts of Al powder with the median diameter granularity of 10-15 mu m, 3 parts of activated alumina micro powder with the median diameter granularity of 2-3 mu m and TiO with the median diameter granularity of 2-10 mu m 23 parts of binder, and 2 parts of additional binder.
(5) Assembling the working lining ring bricks with the steel structure 2: assembling the working lining ring bricks dried in the step (4) with the argon pipe 5 and the steel structure 2, testing gas, and checking whether the argon pipe 5 is blocked, whether the air tightness is qualified and the like;
(6) assembling a mold: cleaning the clean die, brushing mold oil, and assembling the assembly in the step (5) and the die together;
(7) pouring: hoisting the assembly prepared in the step (6) to a vibration table, pouring the self-flowing material 3, and then pouring the pouring material 1 while vibrating;
(8) curing and baking: and (4) curing the impregnated tube poured in the step (7) with a mould for 10-12 hours, demoulding and curing for 10-12 hours, and then baking in a drying kiln at 220-280 ℃ for 24-48 hours to obtain a finished product.
The part of the utility model not detailed is prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.
Claims (4)
1. A dip pipe, includes the dip pipe body, characterized by: the dip pipe body comprises a pouring material, a steel structure, a self-flowing material and a working lining brick which are sequentially arranged from outside to inside, wherein argon pipes are arranged on the steel structure, the self-flowing material and the working lining brick in a penetrating mode and comprise a main pipe a, an upper argon pipe branch pipe b and a lower argon pipe branch pipe c, and a plurality of upper argon pipe branch pipes b are arranged and respectively arranged in the middle of the dip pipe body in a penetrating mode; the lower row of argon gas pipe branch pipes c are arranged on the lower portion of the dip pipe body in a penetrating mode respectively, the distance from the lower edge of the dip pipe body to the lower edge of the dip pipe body is 1/4-1/3 of the height of the whole dip pipe body, and the upper row of argon gas pipe branch pipes b and the lower row of argon gas pipe branch pipes c are arranged perpendicular to the central axis of the dip pipe body respectively and are distributed in an inclined mode at equal intervals;
the steel structure comprises a steel liner a, an anchoring piece b and a flange c, the steel liner a is arranged between the self-flowing material and the casting material, the steel liner a is fixed with the casting material through the anchoring piece b, the flange c is fixed outside the steel liner a and positioned at the upper edge, and the inner surface of the working lining brick is provided with a coating;
be responsible for a right angle body and the ring channel including the intercommunication setting, the ring channel is not closed ring, the horizontal pipe setting of right angle body is in the outside of pouring material, the lower part and the middle part of the vertical pipe of right angle body communicate respectively has the ring channel, the vertical setting of vertical pipe is in the pouring material, and be close to the inner face setting of pouring material, two ring channels are respectively along steel courage an's circumferencial direction and are located the pouring material, the outer end of going up argon discharge pipe branch pipe b and lower row argon discharge pipe branch pipe c respectively with the middle part ring channel, lower part ring channel intercommunication, and go up argon discharge pipe branch pipe b and lower row argon discharge pipe branch pipe c and pass from the material of flowing respectively, work lining brick and coating set up inside the.
2. The dip tube of claim 1, wherein: the upper argon exhaust pipe branch pipe b and the lower argon exhaust pipe branch pipe c are arranged in a vertically staggered mode.
3. The dip tube of claim 1, wherein: the thickness of the coating is 0.5-1 mm.
4. The dip tube of claim 1, wherein: the upper port of the casting material is positioned at the upper part of the steel liner a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021223228.4U CN212404155U (en) | 2020-06-29 | 2020-06-29 | Dip pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021223228.4U CN212404155U (en) | 2020-06-29 | 2020-06-29 | Dip pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212404155U true CN212404155U (en) | 2021-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021223228.4U Active CN212404155U (en) | 2020-06-29 | 2020-06-29 | Dip pipe |
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| CN (1) | CN212404155U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893249A (en) * | 2020-06-29 | 2020-11-06 | 洛阳利尔耐火材料有限公司 | Dip pipe and manufacturing method thereof |
| CN113894923A (en) * | 2021-09-30 | 2022-01-07 | 营口市瑞福来耐火材料有限公司 | Integral forming production method of dip pipe and integral forming dip pipe |
-
2020
- 2020-06-29 CN CN202021223228.4U patent/CN212404155U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893249A (en) * | 2020-06-29 | 2020-11-06 | 洛阳利尔耐火材料有限公司 | Dip pipe and manufacturing method thereof |
| CN111893249B (en) * | 2020-06-29 | 2023-11-17 | 洛阳利尔功能材料有限公司 | Dipping pipe and manufacturing method thereof |
| CN113894923A (en) * | 2021-09-30 | 2022-01-07 | 营口市瑞福来耐火材料有限公司 | Integral forming production method of dip pipe and integral forming dip pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210513 Address after: 471322 Baisha Town Industrial Agglomeration Area, Yichuan County, Luoyang City, Henan Province Patentee after: Luoyang Lier Functional Materials Co.,Ltd. Address before: 471000 entrance of Mudan Avenue, zhangheng street, Luolong District, Luoyang City, Henan Province Patentee before: LUOYANG LIER REFRACTORY MATERIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right |