CN201728343U - Submerged nozzle blockage structure of intermediate tank - Google Patents
Submerged nozzle blockage structure of intermediate tank Download PDFInfo
- Publication number
- CN201728343U CN201728343U CN201020277583XU CN201020277583U CN201728343U CN 201728343 U CN201728343 U CN 201728343U CN 201020277583X U CN201020277583X U CN 201020277583XU CN 201020277583 U CN201020277583 U CN 201020277583U CN 201728343 U CN201728343 U CN 201728343U
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- CN
- China
- Prior art keywords
- pans
- submersed nozzle
- submerged nozzle
- stifled
- intermediate tank
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- 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.)
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Abstract
The utility model relates to the field of continuous casting, and provides a submerged nozzle blockage structure of an intermediate tank. The submerged nozzle blockage structure comprises a pole handle (1), a base (2) fixed at one end of the pole handle (1), and a blockage post (12) fixed on the working face (11) of the base (2) matched with the end surface of a nozzle outlet. The blockage post (12) is of a post shape or a bench shape which is matched with the internal hole of the submerged nozzle. The submerged nozzle blockage structure of the intermediate tank can safely and quickly plug up the molten steel flowed out from the submerged nozzle after the intermediate tank stops pouring, protects the cover plate of a crystallizer, guarantees the personnel safety of operating staff, ameliorate working environment, has low cost and simple structure, is convenient and safe to use, has high reliability, and is suitable for the replacement operation of the intermediate tank of various conticasters.
Description
Technical field
The utility model relates to the continuous casting field, and especially a kind of pans submersed nozzle blocks up flow structure.
Background technology
Continuous casting technology is one liquid metals is cast into the strand new technology of certain section configuration continuously through one group of special cooling and bracing or strutting arrangement that its appearance has fundamentally changed the steel ingot-first roll process that has dominated since the century.Continuous casting steel machine and traditional mould annotate steel technology compare have the production process simplification, recovery rate of iron height, plurality of advantages such as energy resource consumption is low, automaticity is high, productivity ratio is high, slab quality is good, become one of important technology that has epoch-making property on the steel and iron industry developing history.The exploitation of continuous casting steel machine technology is that iron and steel is produced the great technological revolution again afterwards of relaying oxygen coverter with using, and is the most active branch of present field of metallurgy, also is one of technology with fastest developing speed in the field of steel-making.Continuous casting technology has produced huge motive force to the world steel industrial expansion.Continuous casting production fast development has at present become promotion steel-making and whole iron and steel is produced flourish major technique power.
In the continuous casting steel machine process, pans are the containers that hold molten steel that connect between steel ladle and the crystallizer, have decompression, shunting, remove functions such as field trash and storage molten steel, realize sequence casting.For improving slab quality, between pans and crystallizer, be provided with submersed nozzle, it mainly acts on and is: prevent splashing of secondary oxidation of steel nitrogenize and molten steel; Regulate MOLTEN STEEL FLOW state and injection rate; Prevent that the covering slag non-metallic inclusion is involved in the molten steel, to promoting that floating foreign plays an important role in the molten steel; Opposite side casting throwing lumber recovery and slab quality have decisive influence.Submersed nozzle is installed in the pans bottom, and inserts in the crystallizer.
Owing to improving constantly that the molten steel cleanliness factor requires, and correctly control field trash type and form, often molten steel carried out calcification processing.But through the molten steel of calcification processing, strengthened molten steel to the erosion of pans refractory material with wash away, particularly to adopting the pans of submersed nozzle control stream, the erosion aggravation of its stopper has a strong impact on service life of pans.Arrive when changing service life at pans; usually stay steel to stay slag in the pans that are replaced in addition; therefore because stopper can not effectively be blocked immersion water gap bowl portion; molten steel still can flow out from submersed nozzle; for fear of the generation of accident, avoid infringement to crystallizer and cover plate thereof, just need carry out shutoff to the mouth of a river.Accident flashboard at present commonly used is sealed molten steel, the similar slide valve that is installed in the pans bottom of accident flashboard, cost height; The accident flashboard needs to remove submersed nozzle before closing a floodgate, and therefore only can be used to exist the situation of middle pot drainage opening, and complex operation, is unfavorable for the fast assembling-disassembling of pans; The molten steel that overflows causes each parts of accident flashboard to be connected, so the accident flashboard is changed difficulty, labour intensity is big.
The utility model content
Technical problem to be solved in the utility model provides the stifled flow structure of a kind of safe, efficient pans submersed nozzle.
The technical scheme that its technical problem that solves the utility model adopts is: the pans submersed nozzle blocks up flow structure, comprise the stock handle, be fixed in stock handle one end termination base, be fixed in the stifled fluidization tower on base and the working face that mouth of a river exit end face cooperates, column or the platform shape of described stifled fluidization tower for matching with the submersed nozzle endoporus.
Further, the working face periphery of described base is provided with the ring-type shirt rim of projection.
Further, described stifled fluidization tower is made of round platform or the step cylinder that radius from top to bottom increases gradually.
As a kind of preferred, the described step cylinder from top to bottom top cylinder, intermediate cylindrical, the lower cylindrical that increase step by step of radius constitutes.
Further, described stifled fluidization tower top is provided with cone.
The beneficial effects of the utility model are: after continuous casting tundish waters time end; rise pans; operating personnel are by holding the stock handle of the stifled flow structure of pans submersed nozzle; to block up fluidization tower from the bottom up and fill in the submersed nozzle endoporus, and hold a moment, and treat to unclamp the stock handle again behind the molten steel solidification; thereby block the mouth of a river fast; avoid molten steel to flow out, protection crystallizer cover plate improves working environment.Can guarantee effectively that by the stock handle operating personnel are in operating process, pans away from high temperature, further improve working environment, especially can avoid spattering outside the molten steel when stifled fluidization tower has just inserted the mouth of a river endoporus risk that the safety to operating personnel causes, the setting of base shirt rim is then by limiting the safety that outer direction of spattering molten steel further guarantees operating personnel.The setting of base shirt rim can increase the contact area with molten steel in addition, quickens solidifying of molten steel, realizes fast blockage.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the utility model and the schematic diagram that cooperates of submersed nozzle.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1 and Figure 2, the pans submersed nozzle blocks up flow structure, comprise stock handle 1, be fixed in stock handle 1 one end terminations base 2, be fixed in the stifled fluidization tower 12 on base 2 and the working face 11 that mouth of a river exit end face cooperates, column or the platform shape of described stifled fluidization tower 12 for matching with the submersed nozzle endoporus.
Because molten steel is to the erosion of pans 9 refractory materials and wash away; particularly to adopting the pans 9 of submersed nozzle 8 control streams; the erosion aggravation of its stopper 10; after continuous casting tundish 9 waters time end; usually stay steel to stay slag in the pans in addition; therefore because stopper 10 can not effectively be blocked 8 bowls of portions of submersed nozzle; molten steel still can flow out from submersed nozzle 8; this moment, operating personnel were by holding the stock handle 1 of the stifled flow structure of pans submersed nozzle of the present utility model; to block up fluidization tower 12 from the bottom up fills in submersed nozzle 8 endoporus; and hold a moment; treat to unclamp stock 1 handle again behind the molten steel solidification, thereby block the mouth of a river fast, avoid molten steel to flow out; protection crystallizer cover plate improves working environment.Can effectively guarantee operating personnel in operating process by stock handle 1,, further improve working environment, especially can avoid when stifled fluidization tower 12 has just inserted mouth of a river endoporus, spattering outside the molten steel risk that the safety to operating personnel causes away from the pans of high temperature.Compare with existing accident flashboard, pans submersed nozzle of the present utility model blocks up low, simple in structure, the easy to use, safe and reliable property of flow structure cost height.
Further, working face 11 peripheries of described base 2 are provided with the ring-type shirt rim 4 of projection.The setting of base shirt rim 4 is by limiting the safety that outer direction of spattering molten steel further guarantees operating personnel.Simultaneously, the setting of base shirt rim 4 can increase the contact area with molten steel, quickens solidifying of molten steel, realizes fast blockage.
The working face 11 of above-mentioned base 2 promptly contacts the susceptor surface that formation is sealed and matched with mouth of a river exit end face after stifled fluidization tower 12 inserts mouth of a river endoporus, be the upper surface of disc-shaped base 2 in the embodiment shown in fig. 1.
Because the difference of throttling situation during cast, the situation of mouth of a river endoporus slagging scorification is also different, and the actual inner diameter that also is submersed nozzle 8 endoporus also is different.To flow in order realizing blocking up fast, and then to realize the quick replacing of pans 9, thereby guarantee continuous pouring, best, described stifled fluidization tower is made of round platform or the step cylinder that radius from top to bottom increases gradually.
Wherein the ratio of the progression of step cylinder, minimax radius all can be decided according to concrete performance.Wherein the adaptability of round platform is wider, but the spacing of round platform and mouth of a river endoporus differs, and molten steel solidification also is that plugging time is longer relatively; Can guarantee fast blockage and the prerequisite that the step cylinder is comparatively determined in mouth of a river actual inner diameter is next.
Concrete, in the embodiment shown in fig. 1, the described step cylinder from top to bottom top cylinder 5, intermediate cylindrical 6, the lower cylindrical 7 that increase step by step of radius constitutes.Wherein top cylinder 5 can be fit to the bigger mouth of a river of throttling, and intermediate cylindrical 6 can be fit to the less mouth of a river of throttling, and lower cylindrical 7 can be fit to the mouth of a river of not throttling or slight hole enlargement.
Further, block up filling in of fluidization tower for convenience, described stifled fluidization tower top is provided with cone 3.
Claims (5)
1. the pans submersed nozzle blocks up flow structure, it is characterized in that: comprise stock handle (1), be fixed in stock handle (1) one end termination base (2), be fixed in the stifled fluidization tower (12) on the working face (11) that base (2) cooperates with mouth of a river exit end face, column or the platform shape of described stifled fluidization tower (12) for matching with the submersed nozzle endoporus.
2. pans submersed nozzle as claimed in claim 1 blocks up flow structure, it is characterized in that: working face (11) periphery of described base (2) is provided with the ring-type shirt rim (4) of projection.
3. pans submersed nozzle as claimed in claim 1 blocks up flow structure, it is characterized in that: described stifled fluidization tower is made of round platform or the step cylinder that radius from top to bottom increases gradually.
4. pans submersed nozzle as claimed in claim 3 blocks up flow structure, it is characterized in that: the described step cylinder from top to bottom top cylinder (5) that increases step by step of radius, intermediate cylindrical (6), lower cylindrical (7) constitutes.
5. as claim 1,2, the stifled flow structure of 3 or 4 described pans submersed nozzles, it is characterized in that: described stifled fluidization tower top is provided with cone (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020277583XU CN201728343U (en) | 2010-07-30 | 2010-07-30 | Submerged nozzle blockage structure of intermediate tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020277583XU CN201728343U (en) | 2010-07-30 | 2010-07-30 | Submerged nozzle blockage structure of intermediate tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201728343U true CN201728343U (en) | 2011-02-02 |
Family
ID=43519501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020277583XU Expired - Fee Related CN201728343U (en) | 2010-07-30 | 2010-07-30 | Submerged nozzle blockage structure of intermediate tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201728343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081302A (en) * | 2015-07-20 | 2015-11-25 | 西北工业大学 | Bottom cork pulling type vacuum induction melting and casting control device |
| CN115401192A (en) * | 2022-09-09 | 2022-11-29 | 山东莱钢永锋钢铁有限公司 | Method for conveniently blocking and centering lower nozzle of tundish |
-
2010
- 2010-07-30 CN CN201020277583XU patent/CN201728343U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105081302A (en) * | 2015-07-20 | 2015-11-25 | 西北工业大学 | Bottom cork pulling type vacuum induction melting and casting control device |
| CN105081302B (en) * | 2015-07-20 | 2017-05-17 | 西北工业大学 | Bottom cork pulling type vacuum induction melting and casting control device |
| CN115401192A (en) * | 2022-09-09 | 2022-11-29 | 山东莱钢永锋钢铁有限公司 | Method for conveniently blocking and centering lower nozzle of tundish |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20160730 |