CN215279849U

CN215279849U - Tundish current stabilizer with flow guide pipe

Info

Publication number: CN215279849U
Application number: CN202121848033.3U
Authority: CN
Inventors: 牛金印; 宋健; 解文中; 吴发达
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-12-24
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a take middle package current stabilizer of honeycomb duct belongs to middle package metallurgical technical field. The utility model comprises a cylindrical body, an inner cavity, a flow guide pipe and an outer wall; the inner cavity consists of an inlet section, a neck mouth section and an inner cavity bottom section; flow guide pipes are respectively arranged at two ends of the bottom section of the inner cavity and penetrate through the outer wall; the bottom surface of the inner cavity is provided with a plurality of hemispherical convex surfaces. The inlet section is horn-shaped and has a larger diameter, the neck opening section is straight-through and has a smaller diameter than the inlet section, and the bottom section of the inner cavity is cylinder bottom-shaped and has a diameter close to that of the inlet section. The utility model discloses can effectively realize forming behind the high-speed molten steel impact current stabilizer and stabilize the backward flow, be favorable to prolonging tundish response time for inclusion collision grow up the chance increase, the come-up time increases, and favourable rogue improves the metallurgical properties of tundish.

Description

Tundish current stabilizer with flow guide pipe

Technical Field

The utility model relates to a metallurgical technical field of middle package specifically is a middle package current regulator of area honeycomb duct.

Background

When the pouring basket is opened to water, high-speed molten steel strikes the bottom, makes the package end bear huge impact force and be eroded easily on the one hand, has shortened pouring basket life and has caused the molten steel pollution: on the other hand, molten steel can splash, and the injected flow is easy to entrain air and cause steel slag emulsification to pollute the molten steel. The flow of the molten steel in the tundish has strong turbulent flow characteristics, so that the inclusion is difficult to float upwards and remove. In order to suppress the adverse effect caused by casting, a turbulence suppressor is often installed at the lower part of the tundish nozzle.

Through searching, publication No.: CN210208638U, this novel tundish current stabilizer that involves impact face and be crescent, it includes body, interior cavity and rings, the bottom of body is provided with the diapire, the side of body is provided with the outer wall, diapire and the excessive slick and sly connection of outer wall, the upper portion of interior cavity is equipped with interior cavity, the lower part of interior cavity is equipped with interior cavity down, the bottom of interior cavity is provided with crescent and strikes the recess down. The steel ladle has the advantages of reasonable design, impact resistance, long service life, reasonable distribution of molten steel flow direction, uniform heat flow in the ladle and improvement of molten steel quality; however, due to the fact that the irregular crescent impact grooves possibly cause unstable molten steel flowing back to the free surface of the tundish, the flowing of the molten steel is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the problem that exists among the prior art, a take middle package current stabilizer of honeycomb duct is provided, can effectively realize forming stable backward flow behind the high-speed molten steel impact current stabilizer, be favorable to prolonging middle package response time for inclusion collision grow up the chance increase, the come-up time increases, favourable rogue, the metallurgical properties of package in the middle of improving.

In order to achieve the above object, the utility model provides a following technical scheme: a tundish current stabilizer with a flow guide pipe comprises a body, an inner cavity, the flow guide pipe and an outer wall, wherein the body is cylindrical; the inner cavity consists of an inlet section, a neck mouth section and an inner cavity bottom section; flow guide pipes are respectively arranged at two ends of the bottom section of the inner cavity and penetrate through the outer wall; the bottom surface of the inner cavity is provided with a plurality of hemispherical convex surfaces.

Preferably, the inlet section is flared and has a larger diameter, the neck-mouth section is straight-through and has a smaller diameter than the inlet section, and the bottom section of the inner cavity is cylinder-bottom-shaped and has a diameter close to that of the inlet section.

Preferably, the number of the hemispherical convexities is thirteen, and the hemispherical convexities are arranged at intervals of three, two, three, two and three.

Preferably, the left and right flow guide pipes are respectively arranged, and the diameter is smaller.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses take pouring basket current stabilizer of honeycomb duct, the washing away of pouring stream to pouring basket end liner that can not only significantly reduce prevents the molten steel splash, and the honeycomb duct and the hemisphere convex surface of establishhing simultaneously can effectively realize forming behind the high-speed molten steel impact current stabilizer and stabilize the backward flow, are favorable to prolonging pouring basket response time for inclusion collision grow up chance increase, and the come-up time increases, and favourable rogue improves the metallurgical properties of middle package.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a working principle diagram of the present invention.

In the figure: 1. a body; 2. an inner cavity; 3. a flow guide pipe; 4. a hemispherical convex surface; 5. an outer wall; 21. an inlet section; 22. a neck-mouth section; 23. the bottom section of the inner cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a tundish current stabilizer with a flow guide tube comprises a body 1, an inner cavity 2, a flow guide tube 3 and an outer wall 5, wherein the body 1 is cylindrical; the inner cavity 2 consists of an inlet section 21, a neck section 22 and an inner cavity bottom section 23; the inlet section 21 is horn-shaped and has a larger diameter, the neck section 22 is straight-through, the diameter is smaller than that of the inlet section 21, the inner cavity bottom section 23 is cylinder bottom-shaped, and the diameter is close to that of the inlet section 21; the two ends of the inner cavity bottom section 23 are respectively provided with a flow guide pipe 3, the left and the right of each flow guide pipe 3 are respectively arranged, the diameter of each flow guide pipe is smaller, and the flow guide pipes 3 penetrate through the outer wall 5; the bottom surface of the inner cavity 2 is provided with thirteen hemispherical convex surfaces 4 which are arranged at intervals of three, two, three, two and three.

After the steel ladle is deslagged, high-speed molten steel firstly impacts an inner cavity 2 of a tundish current stabilizer, the molten steel flows out of the tundish current stabilizer along an outer wall 5 after a bottom section 23 of the inner cavity is spread, meanwhile, a small part of the molten steel flows out of a flow guide pipe 3, the impact pressure is reduced, the molten steel flowing back to the free surface of the tundish is calmer, the hemispherical convex surface 4 positioned at the bottom section 23 of the inner cavity enables the injection flow to greatly reduce the scouring of bottom linings, the probability of collision of inclusions is increased, the aggregation and growth of the inclusions are facilitated, the retention time of the molten steel in the ladle is also prolonged, the floating time of the inclusions is more sufficient, and the metallurgical performance of the tundish can be well improved.

In conclusion, the tundish current stabilizer with the flow guide pipe can greatly reduce the scouring of the injection flow to the tundish bottom lining and prevent molten steel splashing, and the flow guide pipe and the hemispherical convex surface which are arranged simultaneously can effectively realize the stable backflow formed after the high-speed molten steel impacts the current stabilizer, thereby being beneficial to prolonging the response time of the tundish, increasing the probability of collision and growth of impurities, increasing the floating time, being beneficial to removing impurities and improving the metallurgical performance of the tundish.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take pouring basket current stabilizer of honeycomb duct which characterized in that: the honeycomb duct comprises a body (1), an inner cavity (2), a honeycomb duct (3) and an outer wall (5), wherein the body (1) is cylindrical; the inner cavity (2) consists of an inlet section (21), a neck opening section (22) and an inner cavity bottom section (23); both ends of the inner cavity bottom section (23) are respectively provided with a flow guide pipe (3), and the flow guide pipe (3) penetrates through the outer wall (5); the bottom surface of the inner cavity (2) is provided with a plurality of hemispherical convex surfaces (4).

2. The tundish current stabilizer with the flow guide pipe according to claim 1, wherein: the inlet section (21) is trumpet-shaped and has a larger diameter, the neck-mouth section (22) is straight-through and has a smaller diameter than the inlet section (21), and the inner cavity bottom section (23) is cylinder bottom-shaped and has a diameter close to that of the inlet section (21).

3. The tundish current stabilizer with the flow guide pipe according to claim 1, wherein: the number of the hemispherical convexes (4) is thirteen, and three, two, three, two and three are arranged at intervals.

4. The tundish current stabilizer with the flow guide pipe according to claim 1, wherein: the left and the right of the draft tube (3) are respectively provided with one draft tube, and the diameter is smaller.