CN201316801Y - Ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes - Google Patents
Ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes Download PDFInfo
- Publication number
- CN201316801Y CN201316801Y CNU2008202197762U CN200820219776U CN201316801Y CN 201316801 Y CN201316801 Y CN 201316801Y CN U2008202197762 U CNU2008202197762 U CN U2008202197762U CN 200820219776 U CN200820219776 U CN 200820219776U CN 201316801 Y CN201316801 Y CN 201316801Y
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- side opening
- ladle
- long nozzle
- continuous casting
- flow long
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Abstract
A ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes belongs to the continuous casting field of steelworks in the metallurgical industry, which is connected between a ladle and a continuous casting tundish. A lower outlet of the ladle lateral-hole swirling-flow long nozzle is sealed, and a lateral wall of the ladle lateral-hole swirling-flow long nozzle is equipped with at least one lateral hole. Liquid steel is injected into the continuous casting tundish via the ladle lateral-hole swirling-flow long nozzle from the ladle. The lateral hole is horizontal or is provided with an upward inclination angle or a downward inclination angle. The lateral hole is rectangular or circular or elliptic or rectangular in middle and semi-circular in two sides. The position of the center line of the lateral hole is lower than an upper edge of a dregs blocking dam. The utility model is fine in use effect, simple in structure, easy to manufacture, simple and convenient in installation and the like, and is adapted to not only a single-machine single-flow tundish, but also a single-machine multi-flow tundish.
Description
Technical field
The utility model belongs to metallurgy industry steel plant continuous casting field, relates to being used to control MOLTEN STEEL FLOW, mixing and stop in tundish, promotes the special equipment of inclusion removal, particularly a kind of ladle side opening eddy flow long nozzle that is used for the continuous casting tundish.
Background technology
The continuous casting tundish is a kind of intermediate equipment in the steel-making continuous casting production process, is a transitional facility that is transformed into continued operation in the steelmaking process by intermittently operated, has the storage molten steel, even molten steel temperature and composition, the function of field trash in the removal molten steel.
Japanese kokai publication hei 4-327346 discloses a kind of electromagnetic centrifugal tundish, and it is mobile to utilize electromagnetic field control molten steel to be rotated, and produces centrifugal force, thereby impels field trash to assemble and remove.Chinese patent ZL200510046994.1 is in order to obtain rotational flow field, below the big bag beam in tundish bottom surface, be provided with cylindrical or the truncated cone-shaped swirling chamber, the swirling chamber main body links to each other with big bag by long nozzle, and the swirling chamber bottom has circular molten steel tangent line inlet along the tangent to periphery direction.This dual mode must carry out structure of modification to existing tundish, has obviously increased equipment investment and operating cost, is unfavorable for promoting in steel plant continuous casting production.
The utility model content
At the device structure complexity of removing foreign material in the existing tundish, investment and operating cost height, the utility model provides a kind of ladle side opening eddy flow long nozzle that is used for the continuous casting tundish, obtains rotational flow field by the straight tubular construction that changes traditional ladle long nozzle.The outlet of dwindling the discharge area of traditional ladle long nozzle or sealing former long nozzle, in traditional ladle long nozzle side one or more side openings are set, make the wall change molten steel flow direction that impacts tundish bag wall or other tundish flow control device (dam and slag blocking wall etc.) from the molten steel of side opening outflow, forming with ladle side opening eddy flow long nozzle is the rotational flow field at center.
The technical solution adopted in the utility model is: a kind of ladle side opening eddy flow long nozzle that is used for the continuous casting tundish, be connected between ladle and the continuous casting tundish, wherein: the outlet sealing down of ladle side opening eddy flow long nozzle, the sidewall of ladle side opening eddy flow long nozzle is provided with at least one side opening.Molten steel injects the continuous casting tundish from ladle through ladle side opening eddy flow long nozzle.
Described side opening is horizontal type or has positive pitch or have downward inclination angle.
Described side opening be shaped as rectangle or circular or oval or middle for rectangle, both sides for semicircle.
Described side opening position of center line is lower than the upper edge of dam.
A kind of optimal way of the present utility model: the side opening of ladle side opening eddy flow long nozzle is two, two side opening central lines, and the angle that two side opening center lines become with dam wall normal is at 5～90 °.
Another kind of optimal way of the present utility model: the side opening of ladle side opening eddy flow long nozzle is four, relative two side opening central lines, the center line of adjacent two side openings is vertical mutually, and the angle that the side opening center line of close dam becomes with dam wall normal is at 5～45 °.
The beneficial effects of the utility model are: it is good to have result of use, simple in structure, makes easily characteristics such as simple installation.Be not only applicable to a machine single current tundish, and be applicable to a machine multithread tundish.The potential energy of molten steel ladle makes the molten steel in ladle side opening eddy flow long nozzle exit have bigger speed, because this jet impacts on the solid wall surface of tundish wall or other control fluid element along certain angle (non-wall normal orientation), rely on the kinetic energy and the potential energy of molten steel, can make molten steel produce rotational flow.Under action of centrifugal force, nonmetal inclusion is to the motion of the central area in eddy flow flow field, thus the collision polymerization and the come-up of promotion field trash.Adopt ladle side opening eddy flow long nozzle of the present utility model, only relate to the replacing ladle long nozzle, do not need to change existing tundish structure, just can obtain rotational flow field.Therefore the utility model is simple in structure, does not increase equipment operating cost, is easy to promote at the scene.
Description of drawings
Fig. 1 is the principal section figure of the continuous casting tundish of a kind of embodiment of the utility model,
Fig. 2 is Fig. 1 continuous casting tundish A-A profile,
Fig. 3 is the principal section figure of the side opening eddy flow downspout of a kind of embodiment of the utility model,
Fig. 4 is the side view of the different side opening shapes of Fig. 3 ladle side opening eddy flow long nozzle,
(a) rectangle side opening schematic diagram, (b) circular side opening schematic diagram,
(c) oval side opening schematic diagram, (d) middle is that rectangle, both sides are semicircle side opening schematic diagram.
Among the figure: 1 tundish, 2 dams, 3 submersed nozzles, 4 slag blocking walls, 5 ladle side opening eddy flow long nozzles.
The specific embodiment
Content of the present utility model is further described and replenishes with instantiation below in conjunction with accompanying drawing.
As shown in Figure 1, principal section figure for the continuous casting tundish of a kind of embodiment of the utility model, traditional ladle long nozzle is modified into ladle side opening eddy flow long nozzle 5, the outlet sealing down of ladle side opening eddy flow long nozzle, the sidewall of ladle side opening eddy flow long nozzle is provided with two side openings.Side opening is a horizontal type, and side opening is shaped as the upper edge that rectangular side centerline hole position is lower than dam.
The angle that two side opening central lines, two side opening center lines become with dam 2 wall normals is at 5～90 °.Molten steel is formed centrally rotational flow field in will being with ladle side opening eddy flow long nozzle.
The another kind of embodiment of the utility model: described side opening is four, the centre is that rectangle, both sides are for semicircle, has downward inclination angle, relative two side opening central lines, the center line of adjacent two side openings is vertical mutually, and the angle that the side opening center line of close dam 2 becomes with dam 2 wall normals is at 5～45 °.
Claims (6)
1, a kind of ladle side opening eddy flow long nozzle that is used for the continuous casting tundish is characterized in that: the outlet sealing down of ladle side opening eddy flow long nozzle, the sidewall of ladle side opening eddy flow long nozzle is provided with at least one side opening.
2,, it is characterized in that described side opening is horizontal type or has positive pitch or have downward inclination angle according to the described ladle side opening eddy flow long nozzle that is used for the continuous casting tundish of claim 1.
3, according to the described ladle side opening eddy flow long nozzle that is used for the continuous casting tundish of claim 1, it is characterized in that described side opening be shaped as rectangle or circular or oval or middle for rectangle, both sides for semicircle.
4, according to claim 1, the 2 or 3 described ladle side opening eddy flow long nozzles that are used for the continuous casting tundish, it is characterized in that described side opening position of center line is lower than the upper edge of dam.
5, according to the described ladle side opening eddy flow long nozzle that is used for the continuous casting tundish of claim 1, it is characterized in that described side opening is two, two side opening central lines, the angle that two side opening center lines become with dam wall normal is at 5～90 °.
6, according to the described ladle side opening eddy flow long nozzle that is used for the continuous casting tundish of claim 1, it is characterized in that described side opening is four, relative two side opening central lines, the center line of adjacent two side openings is vertical mutually, and the angle that the side opening center line of close dam becomes with dam wall normal is at 5～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202197762U CN201316801Y (en) | 2008-11-26 | 2008-11-26 | Ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202197762U CN201316801Y (en) | 2008-11-26 | 2008-11-26 | Ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201316801Y true CN201316801Y (en) | 2009-09-30 |
Family
ID=41195573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202197762U Expired - Fee Related CN201316801Y (en) | 2008-11-26 | 2008-11-26 | Ladle lateral-hole swirling-flow long nozzle for continuous casting tundishes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201316801Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586451A (en) * | 2013-11-01 | 2014-02-19 | 中天钢铁集团有限公司 | Brake type immersion water gap for volume production |
-
2008
- 2008-11-26 CN CNU2008202197762U patent/CN201316801Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586451A (en) * | 2013-11-01 | 2014-02-19 | 中天钢铁集团有限公司 | Brake type immersion water gap for volume production |
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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: 20090930 Termination date: 20131126 |