CN203459651U - Submersed nozzle with flow control vanes - Google Patents
Submersed nozzle with flow control vanes Download PDFInfo
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- CN203459651U CN203459651U CN201320494263.3U CN201320494263U CN203459651U CN 203459651 U CN203459651 U CN 203459651U CN 201320494263 U CN201320494263 U CN 201320494263U CN 203459651 U CN203459651 U CN 203459651U
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- guide vane
- steel
- mouth
- submersed nozzle
- flow control
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Abstract
The utility model discloses a submersed nozzle with flow control vanes. The submersed nozzle with the flow control vanes comprises a nozzle main body of a cylindrical structure, wherein a steel flow channel is formed inside the nozzle main body, outlet holes communicated with the steel flow channel are symmetrically formed in the two sides of the bottom of the nozzle main body, and two steel flow guide vanes are symmetrically arranged on the circumferential wall of the nozzle main body above the two outlet holes. In a better embodiment, the outline of each flow guide vanes is like a parabola and is in smooth transition with the outer wall of the nozzle. A theta angle composed by the axial line of each steel flow guide vane and the horizontal axial line of each outlet hole is 30-60 degrees; the axial line of each flow guide vane and the axial line of each outlet hole form an angle of 45 degrees; each flow guide vane is 30-120 cm in length and 50-150 cm in height; the flow guide vanes are mounted at 50-150 cm of the upper side of the outlet holes. The submersed nozzle with the flow control vanes can control the flow state of the molten steel near a liquid surface of a crystallizer efficiently in a casting process and improves final quality of casting blanks.
Description
Technical field
The utility model relates to a kind of auxiliary equipment of continuous casting, particularly a kind of submersed nozzle for continuous casting crystallizer for plate billet.
Background technology
Crystallizer submersed nozzle is one of key equipment of the totally-enclosed protection casting process of molten steel.Submerged nozzle for slab continuous casting structure is mainly both sides pass at present, steel flow in tundish is divided into two strands of steel streams and enters in crystallizer through the soaking water gap hole that spues, because static pressure stream burst impulsive force and the flow velocity of molten steel are very large, this is very large on the slag impact that molten steel in mold flows and free surface fluctuation causes.
The structure of submersed nozzle is vital on the impact of molten steel in mold flow regime, Chinese patent discloses a kind of anti-whirlpool metering nozzle for No. 00259317.3, adopt the design of horn mouth infundibulate inner chamber, by only having key-way shape or corrugated male and fomale(M&F) to prevent to spue at horn mouth inwall the bias current in hole to produce.Cylindrical shell bottom, the Shi mouth of a river, No. JP3226340 disclosed mouth of a river of Japan Patent connects U-shaped three barricades steel of leading the way and flows to into crystallizer, improves crystallizer flow field.No. JP2280949 disclosed mouth of a river of Japan Patent is mainly used in circular-arc type continuous casting machine, by the adjustment orifice angle deflection outer arc side of tapping, reduces the probability that field trash is caught by inner arc solidification front.No. 200520046135.8 disclosed submersed nozzle of Chinese patent is both sides tappings, and every side has the tapping hole of upper and lower two angle of declinations, reduces the impulsive force to casting blank solidification forward position.Japan Patent is for No. JP2205239 to suppress the whirlpool that molten steel surface forms covering slag is rolled in molten steel by increase ring-like convex in tapping upper end, hole.
In sum; prior art is mainly by type structure in change submersed nozzle, to improve molten steel to go out stream stream strand; and then improve flowing of molten steel in mold; but submersed nozzle field trash after cast is after a while unavoidable in inside, mouth of a river dross; this has not also existed type structure in the mouth of a river, and dross also can cause that side opening stream strand goes out the inhomogeneous of stream, causes the bias current in crystallizer; on molten steel surface, cause whirlpool, be involved in air and covering slag.
Summary of the invention
For the deficiencies in the prior art; the purpose of this utility model be to provide a kind of can crystallization control device liquid level near the submersed nozzle of MOLTEN STEEL FLOW; realization control effectively near steel liquid flow state free surface in continuous casting of molten steel process; suppress near the generation of the bias current of the molten steel of free surface, suppress the generation of whirlpool and being involved in of covering slag.
For achieving the above object, the technical solution of the utility model is:
A kind of submersed nozzle with flow control blade, comprise mouth of a river body, described mouth of a river body is columnar structured, mouth of a river body interior is provided with steel circulation road, the two bottom sides symmetry of mouth of a river body offers the hole that spues being communicated with steel circulation road, and in the circle wall of the mouth of a river body on two holes that spue, symmetry offers two steel stream guide vanes.
Preferably, described guide vane appearance profile is parabola shaped and seamlessly transits with mouth of a river outer wall.
Preferably, the θ angle that the described axis of steel stream guide vane and the horizontal axis in the hole that spues form is 30～60 degree; Guide vane axis becomes 45 degree with the axially bored line that spues.
Preferably, the length of described guide vane is 30～120cm; The height of guide vane is 50～150cm; The installation site of guide vane is at the hole upside 50～150cm that spues.
Compare with existing submersed nozzle, the utility model has the advantage of:
Realization is effectively controlled free surface place steel liquid flow state in continuous casting of molten steel process, in both sides, the mouth of a river, form two strands of symmetrical steel streams, prevent near the generation of the whirlpool of submersed nozzle, suppress being involved in of covering slag, make the inclusion defect amount of final strand reduce by 10%; Can effectively control flowing of liquid level annex molten steel, prevent near the liquid steel level unusual fluctuations mouth of a river, make the temperature of molten steel more even, be conducive to the growth of crystal grain, the floating of field trash, the final mass of raising strand.
Accompanying drawing explanation
Fig. 1 is the half sectional view of facing of the submersed nozzle with flow control blade of an embodiment of the utility model;
Fig. 2 is the cutaway view of getting along A-A in Fig. 1; And
Fig. 3 is the cutaway view of getting along B-B in Fig. 1.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.First it should be noted that, the utility model is not limited to the following specific embodiment, the spirit that those skilled in the art should embody from following embodiment is understood the utility model, and each technical term can be done the most wide in range understanding based on Spirit Essence of the present utility model.In figure, same or analogous member uses the same reference numerals to represent.
As shown in Figure 1 to Figure 3; a kind of submersed nozzle 4 with flow control blade of an embodiment of the present utility model; to realize, near steel liquid flow state free surface in continuous casting of molten steel process is control effectively; suppress near the generation of the bias current of the molten steel of free surface, suppress the generation of whirlpool and being involved in of covering slag.This submersed nozzle 4 with flow control blade comprises mouth of a river body 1, this mouth of a river body 1 is columnar structured, mouth of a river body interior is provided with steel circulation road 1a, the two bottom sides symmetry of mouth of a river body 1 offers spue hole 3a, the 3b being communicated with steel circulation road, as shown in figures 1 and 3, in the circle wall of the mouth of a river body 1 at two on spuing hole 3a, 3b, symmetry offers two steel stream guide vane 2a, 2b, as flow control blade.Preferably, steel stream guide vane 2a, 2b axis are 30～60 degree with the θ angle of the horizontal axis formation of spue hole 3a, 3b, as shown in Figure 2; Guide vane axis becomes 45 degree with the axially bored line that spues, and in Fig. 1, does not indicate; The length of guide vane is 30～120cm; The height of guide vane is 50～150cm; The installation site of guide vane is at the hole upside 50～150cm that spues; Guide vane appearance profile is parabola shaped and seamlessly transits with mouth of a river outer wall.
Flow through spue hole 3a, the 3b of submersed nozzle 4 of molten steel enters in crystallizer (not shown), and stream strand impacts after mould at narrow, is divided into upper and lower two bursts of backflows.Because submersed nozzle 4 has two spue hole 3a, the 3b that are arranged symmetrically with in left and right; two of the left and right stream strand of upper end crosses at crystallizer center submersed nozzle guide vane 2a, 2b place; stream stock does not impact on guide vane 2a, 2b; steel stream forms two strands of symmetrical steel streams under the guiding of guide vane in the both sides of submersed nozzle 4; at the mouth of a river, two skiddings have become the MOLTEN STEEL FLOW of intersecting; about having avoided, two streams strand impact the fluctuation that causes near submersed nozzle 4 liquid steel levels mutually, and cause being involved in of covering slag.So guide vane 2a, 2b can effectively control near MOLTEN STEEL FLOW state liquid level, and can cleaning molten steel, liquid steel temperature field in homogeneously crystallized device, improves strand final mass.
Therefore, submersed nozzle 4 of the present utility model can be realized free surface place steel liquid flow state in continuous casting of molten steel process is effectively controlled, at the mouth of a river, 4 both sides form two strands of symmetrical steel streams, prevent near the generation of the whirlpool of submersed nozzle, suppress being involved in of covering slag, make the inclusion defect amount of final strand reduce by 10%; Can effectively control flowing of liquid level annex molten steel, prevent near the liquid steel level unusual fluctuations mouth of a river, make the temperature of molten steel more even, be conducive to the growth of crystal grain, the floating of field trash, the final mass of raising strand.
In sum, the utility model is as one of vitals of sheet billet continuous casting, and near effective MOLTEN STEEL FLOW state crystallization control device liquid level in casting cycle, improves strand final mass, will be applied to widely in the production process of sheet billet continuous casting.
Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (4)
1. the submersed nozzle with flow control blade, comprise mouth of a river body, described mouth of a river body is columnar structured, mouth of a river body interior is provided with steel circulation road, the two bottom sides symmetry of mouth of a river body offers the hole that spues being communicated with described steel circulation road, it is characterized in that, in the circle wall of the mouth of a river body on two holes that spue, symmetry offers two steel stream guide vanes.
2. the submersed nozzle with flow control blade according to claim 1, is characterized in that, described guide vane appearance profile is parabola shaped and seamlessly transits with mouth of a river outer wall.
3. the submersed nozzle with flow control blade according to claim 1 and 2, is characterized in that, the θ angle that the described axis of steel stream guide vane and the horizontal axis in the hole that spues form is 30～60 degree; Guide vane axis becomes 45 degree with the axially bored line that spues.
4. the submersed nozzle with flow control blade according to claim 3, is characterized in that, the length of described guide vane is 30～120cm; The height of guide vane is 50～150cm; The installation site of guide vane is at the hole upside 50～150cm that spues.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320494263.3U CN203459651U (en) | 2013-08-13 | 2013-08-13 | Submersed nozzle with flow control vanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320494263.3U CN203459651U (en) | 2013-08-13 | 2013-08-13 | Submersed nozzle with flow control vanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203459651U true CN203459651U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320494263.3U Expired - Lifetime CN203459651U (en) | 2013-08-13 | 2013-08-13 | Submersed nozzle with flow control vanes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110842186A (en) * | 2019-09-30 | 2020-02-28 | 鞍钢股份有限公司 | Method and device for preventing eddy slag rolling of slab continuous casting crystallizer |
| CN110997183A (en) * | 2017-08-08 | 2020-04-10 | 株式会社Posco | Nozzle with a nozzle body |
| CN114354971A (en) * | 2022-01-14 | 2022-04-15 | 华北理工大学 | Molten steel flow velocity measuring equipment for continuous casting crystallizer |
| CN114749650A (en) * | 2022-05-08 | 2022-07-15 | 新疆八一钢铁股份有限公司 | Parabolic long-life continuous casting immersion nozzle |
| CN114799150A (en) * | 2022-04-24 | 2022-07-29 | 湖南华菱涟源钢铁有限公司 | Wave suppression method for continuous casting of square billets |
-
2013
- 2013-08-13 CN CN201320494263.3U patent/CN203459651U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110997183A (en) * | 2017-08-08 | 2020-04-10 | 株式会社Posco | Nozzle with a nozzle body |
| CN110842186A (en) * | 2019-09-30 | 2020-02-28 | 鞍钢股份有限公司 | Method and device for preventing eddy slag rolling of slab continuous casting crystallizer |
| CN110842186B (en) * | 2019-09-30 | 2022-02-18 | 鞍钢股份有限公司 | Method and device for preventing eddy slag rolling of slab continuous casting crystallizer |
| CN114354971A (en) * | 2022-01-14 | 2022-04-15 | 华北理工大学 | Molten steel flow velocity measuring equipment for continuous casting crystallizer |
| CN114354971B (en) * | 2022-01-14 | 2023-07-21 | 华北理工大学 | Continuous casting crystallizer molten steel flow velocity measurement equipment |
| CN114799150A (en) * | 2022-04-24 | 2022-07-29 | 湖南华菱涟源钢铁有限公司 | Wave suppression method for continuous casting of square billets |
| CN114749650A (en) * | 2022-05-08 | 2022-07-15 | 新疆八一钢铁股份有限公司 | Parabolic long-life continuous casting immersion nozzle |
| CN114749650B (en) * | 2022-05-08 | 2024-08-09 | 新疆八一钢铁股份有限公司 | Parabolic long-life continuous casting immersion nozzle |
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Granted publication date: 20140305 |