Non-totally-enclosed current stabilizer

Abstract

The utility model discloses a non-totally-closed type current stabilizer which comprises a bottom plate, an inner vertical frame arranged on the bottom plate and an outer vertical frame arranged on the bottom plate. The inner vertical frame comprises a first inner vertical wall, a second inner vertical wall and a third inner vertical wall, and an inner opening is formed between the second end of the first inner vertical wall and the second end of the second inner vertical wall; the outer vertical frame comprises a first outer vertical wall, a second outer vertical wall and a third outer vertical wall, an outer opening is formed between the second end of the first outer vertical wall and the second end of the second outer vertical wall, a first flow field improving protruding edge is arranged at the position, opposite to the inner opening, of the top of the third outer vertical wall, and the first flow field improving protruding edge extends in the direction of the inner opening. By arranging the first flow field improving convex edge, a molten steel flow field structure can be effectively improved, and the outward impact speed of molten steel is reduced, so that the scouring to a surrounding tundish working layer is reduced, meanwhile, the stirring effect on the molten steel is enhanced, the components of the molten steel are uniform, inclusions are promoted to float upwards, and the cleanliness of the molten steel is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to continuous casting metallurgical equipment technical field, specifically a kind of non full-enclosed flow stabilizer. BACKGROUND

[0002] In prior art, flow stabilizer is installed in impact area of tundish, for receiving molten steel from ladle, reducing the size of eddy area formed by molten steel impact, protecting the bottom working layer of tundish, slowing down the scouring of molten steel to the working layer around impact area, while promoting the floating of inclusions in molten steel and improving the cleanliness of molten steel. The flow stabilizer in prior art cannot well distribute molten steel in flow stabilizer and reduce impact eddy due to structural limitations. SUMMARY

[0003] Therefore, the utility model wants to solve the technical problem to provide a kind of non full-enclosed flow stabilizer, which can effectively distribute molten steel in flow stabilizer, limit eddy area, reduce the volume of dead zone in flow stabilizer, while promoting the floating of inclusions in molten steel and improving the quality of casting blank.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a kind of non full-enclosed flow stabilizer, including bottom plate, inner vertical frame being arranged on the bottom plate and outer vertical frame being arranged on the bottom plate;The inner vertical frame includes first inner vertical wall, second inner vertical wall and third inner vertical wall, the both ends of the third inner vertical wall are respectively sealed with the first end of the first inner vertical wall and the first end of the second inner vertical wall Connection, the first inner vertical wall and the second inner vertical wall are oppositely arranged, and inner opening is arranged between the second end of the first inner vertical wall and the second end of the second inner vertical wall;The outer vertical frame includes first outer vertical wall, second outer vertical wall and third outer vertical wall, the both ends of the third outer vertical wall are respectively sealed with the first end of the first outer vertical wall and the first end of the second outer vertical wall Connection, the first outer vertical wall and the second outer vertical wall are oppositely arranged, and outer opening is arranged between the second end of the first outer vertical wall and the second end of the second outer vertical wall;

[0005] The second end of the first inner vertical wall and the second end of the second inner vertical wall extend into between the first outer vertical wall and the second outer vertical wall from the outer opening;And the second end of the first inner vertical wall and / or the second end of the second inner vertical wall and the third outer vertical wall between the first inner vertical wall and the first outer vertical wall and / or the second inner vertical wall and the second outer vertical wall form second flow field improvement channel, and the second end of the first inner vertical wall and / or the second end of the second inner vertical wall and the third outer vertical wall between the second end of the first inner vertical wall and / or the second end of the second inner vertical wall and the third outer vertical wall have first flow field improvement channel, and the molten steel in the inner vertical frame enters into the second flow field improvement channel through the first flow field improvement channel;

[0006] The top of the third outer wall opposite to the inner opening is provided with a first flow field improvement protrusion extending towards the inner opening. By arranging the first flow field improvement protrusion opposite to the inner opening, when the molten steel flows out of the inner opening and upwardly surges after impacting on the third outer wall, the molten steel is guided to flow towards the inner opening, and the molten steel is stirred by mutual impact, thereby promoting the floating of inclusions.

[0007] The non-fully-closed flow stabilizer, an end of the first flow field improvement protrusion extends towards the first outer wall and / or the second outer wall and covers at least the first flow field improvement channel. By extending the first flow field improvement protrusion to the first flow field improvement channel, the flow distribution effect of the molten steel is increased, and the flow distribution of the molten steel is more uniform, and the impact on the surrounding wall is reduced.

[0008] The non-fully-closed flow stabilizer, in a plane perpendicular to the height direction of the flow stabilizer: the ratio of the width A of the projection of the first flow field improvement channel on the plane to the width of the projection of the first flow field improvement protrusion on the plane is 1:0.5-1:1.

[0009] The non-fully-closed flow stabilizer, the angle between the first flow field improvement protrusion and the horizontal plane is 0-20°.

[0010] The non-fully-closed flow stabilizer, the part of the first flow field improvement protrusion opposite to the inner opening extends towards the inner opening and is connected to the second end of the first inner wall and the second end of the second inner wall.

[0011] The non-fully-closed flow stabilizer, an end of the first flow field improvement protrusion extends to the first outer wall and / or the second outer wall and covers at least a part of the second flow field improvement channel in the width direction.

[0012] The non-fully-closed flow stabilizer, in a plane perpendicular to the height direction of the flow stabilizer: the ratio of the width of the projection of the second flow field improvement channel on the plane to the width of the projection of the first flow field improvement protrusion on the plane is 1:0.5-1:1.

[0013] The first flow field improvement protruding edge is extended to the first outer vertical wall at one end and is flush with the second end of the first outer vertical wall, and the other end of the first flow field improvement protruding edge is extended to the second outer vertical wall and is flush with the second end of the second outer vertical wall.

[0014] The first inner vertical wall, the second inner vertical wall and the third inner vertical wall are all provided with a second flow field improvement protruding edge connected in sequence on the top thereof, and the second flow field improvement protruding edge extends towards the center of the inner vertical frame.

[0015] The height of the third inner vertical wall is greater than the height of the second outer vertical wall, and the height of the second flow field improvement protruding edge is greater than the height of the first flow field improvement protruding edge.

[0016] The technical scheme of the utility model has the following beneficial technical effects:

[0017] The first flow field improvement protruding edge can effectively improve the flow field structure of the molten steel, slow down the speed of the molten steel impacting outward, thereby reducing the scouring of the surrounding working layer of the tundish, and enhancing the stirring effect of the molten steel, which is beneficial to the uniformity of the composition of the molten steel and promotes the floating of inclusions, and improves the cleanliness of the molten steel. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model discloses a three-dimensional structure schematic diagram of non full -enclosed flow stabilizer;

[0019] Figure 2 The utility model discloses a top view sectional structure schematic diagram of non full -enclosed flow stabilizer;

[0020] Figure 3 The utility model discloses a top view structure schematic diagram of non full -enclosed flow stabilizer;

[0021] Figure 4 The utility model discloses a side view sectional structure schematic diagram of non full -enclosed flow stabilizer.

[0022] The reference signs in the figure are as follows: 1-bottom plate; 2-inner vertical frame; 21-first inner vertical wall; 22-second inner vertical wall; 23-third inner vertical wall; 3-outer vertical frame; 31-first outer vertical wall; 32-second outer vertical wall; 33-third outer vertical wall; 4-inner opening; 5-outer opening; 6-first flow field improvement channel; 7-second flow field improvement channel; 8-first flow field improvement protrusion; 9-second flow field improvement protrusion. DETAILED DESCRIPTION

[0023] One non-fully closed flow stabilizer in the embodiment, as shown in Figure 1 , comprises a bottom plate 1, an inner vertical frame 2 arranged on the bottom plate 1, and an outer vertical frame 3 arranged on the bottom plate 1; the inner vertical frame 2 comprises a first inner vertical wall 21, a second inner vertical wall 22, and a third inner vertical wall 23, both ends of the third inner vertical wall 23 are sealingly connected with a first end of the first inner vertical wall 21 and a first end of the second inner vertical wall 22 respectively, the first inner vertical wall 21 and the second inner vertical wall 22 are oppositely arranged, and an inner opening 4 is arranged between a second end of the first inner vertical wall 21 and a second end of the second inner vertical wall 22; the outer vertical frame 3 comprises a first outer vertical wall 31, a second outer vertical wall 32, and a third outer vertical wall 33, both ends of the third outer vertical wall 33 are sealingly connected with a first end of the first outer vertical wall 31 and a first end of the second outer vertical wall 32 respectively, the first outer vertical wall 31 and the second outer vertical wall 32 are oppositely arranged, and an outer opening 5 is arranged between a second end of the first outer vertical wall 31 and a second end of the second outer vertical wall 32.

[0024] As shown in Figures 1-2 , the second end of the first inner vertical wall 21 and the second end of the second inner vertical wall 22 extend from the outer opening 5 into between the first outer vertical wall 31 and the second outer vertical wall 32; and a second flow field improvement channel 7 is formed between the first inner vertical wall 21 and the first outer vertical wall 31 and between the second inner vertical wall 22 and the second outer vertical wall 32, a first flow field improvement channel 6 is formed between the second end of the first inner vertical wall 21 and the second end of the second inner vertical wall 22 and the third outer vertical wall 33, and the molten steel in the inner vertical frame 2 passes through the first flow field improvement channel 6 into the second flow field improvement channel 7.

[0025] As shown in Figures 2-3 , a first flow field improvement protrusion 8 is arranged at a position opposite to the inner opening 4 on the top of the third outer vertical wall 33, the first flow field improvement protrusion 8 extends in the direction of the inner opening 4, and the end of the first flow field improvement protrusion 8 extends in the direction of the first outer vertical wall 31 and the second outer vertical wall 32 and covers at least the first flow field improvement channel 6.

[0026] The first flow field improvement convex edge 8 is arranged along the horizontal plane, that is, the included angle is 0°. In the plane perpendicular to the height direction of the stabilizer: the ratio of the width A of the orthographic projection of the first flow field improvement channel 6 on the plane to the width of the orthographic projection of the first flow field improvement convex edge 8 on the plane is 1:0.5-1:1, and in the embodiment, the ratio is 1:0.5.

[0027] As shown in FIG. 1, in some embodiments, the first flow field improvement convex edge 8 is arranged along the horizontal plane, that is, the included angle is 0°. In the plane perpendicular to the height direction of the stabilizer: the ratio of the width A of the orthographic projection of the first flow field improvement channel 6 on the plane to the width of the orthographic projection of the first flow field improvement convex edge 8 on the plane is 1:0.5-1:1, and in the embodiment, the ratio is 1:0.5. Figure 4 As shown in FIG. 1, in some embodiments, the first flow field improvement convex edge 8 is arranged along the horizontal plane, that is, the included angle is 0°. In the plane perpendicular to the height direction of the stabilizer: the ratio of the width A of the orthographic projection of the first flow field improvement channel 6 on the plane to the width of the orthographic projection of the first flow field improvement convex edge 8 on the plane is 1:0.5-1:1, and in the embodiment, the ratio is 1:0.5.

[0028] The end of the first flow field improvement convex edge 8 extends to the first outer vertical wall 31 and the second outer vertical wall 32 and covers at least a part of the second flow field improvement channel 7 in the width direction. In the plane perpendicular to the height direction of the stabilizer: the ratio of the width of the orthographic projection of the second flow field improvement channel 7 on the plane to the width of the orthographic projection of the first flow field improvement convex edge 8 on the plane is 1:0.5-1:1, and in the embodiment, the ratio is 1:0.5.

[0029] One end of the first flow field improvement convex edge 8 extends to the first outer vertical wall 31 and is flush with the second end of the first outer vertical wall 31, and the other end of the first flow field improvement convex edge 8 extends to the second outer vertical wall 32 and is flush with the second end of the second outer vertical wall 32.

[0030] The top of the first inner vertical wall 21, the second inner vertical wall 22 and the third inner vertical wall 23 are provided with a second flow field improvement convex edge 9 connected in sequence, which extends towards the center of the inner vertical frame 2; the height of the third inner vertical wall 23 is greater than the height of the second outer vertical wall 32, and the height of the second flow field improvement convex edge 9 is greater than the height of the first flow field improvement convex edge 8. In specific implementation, the third inner vertical wall 23 is 30-500 mm higher than the third outer vertical wall 33. The height difference can prevent the molten steel from directly spilling out of the stabilizer, reduce the impact on the ladle wall, increase the flow rate of the molten steel from the inner opening 4, and improve the local flow rate.

[0031] Obviously, the above embodiments are only examples for clearly illustrating the present application and are not intended to limit the present application. Based on the above description, one of ordinary skill in the art can make other different forms of changes or modifications. Here, it is not necessary or possible to enumerate all the embodiments. The obvious changes or modifications derived from the above should be covered in the protection scope of the present application.

Claims

1. A non-fully enclosed current stabilizer, characterized in that, The system includes a base plate (1), an inner frame (2) mounted on the base plate (1), and an outer frame (3) mounted on the base plate (1). The inner frame (2) includes a first inner wall (21), a second inner wall (22), and a third inner wall (23). The two ends of the third inner wall (23) are respectively sealed to the first ends of the first inner wall (21) and the second inner wall (22). The first inner wall (21) and the second inner wall (22) are arranged opposite to each other. The second end of the first inner wall (21) and the second inner wall (22) are respectively sealed to the first end of the second inner wall (22). An inner opening (4) is provided between the second ends of the inner wall (22); the outer frame (3) includes a first outer wall (31), a second outer wall (32) and a third outer wall (33), the two ends of the third outer wall (33) are respectively sealed to the first end of the first outer wall (31) and the first end of the second outer wall (32), the first outer wall (31) and the second outer wall (32) are arranged opposite to each other, and an outer opening (5) is provided between the second end of the first outer wall (31) and the second end of the second outer wall (32); The second end of the first inner wall (21) and the second end of the second inner wall (22) extend from the outer opening (5) into the space between the first outer wall (31) and the second outer wall (32); and a second flow field improvement channel (7) is formed between the first inner wall (21) and the first outer wall (31) and / or between the second inner wall (22) and the second outer wall (32), and a first flow field improvement channel (6) is provided between the second end of the first inner wall (21) and / or the second end of the second inner wall (22) and the third outer wall (33), and the molten steel in the inner frame (2) enters the second flow field improvement channel (7) through the first flow field improvement channel (6); A first flow field improvement protrusion (8) is provided at the top of the third outer wall (33) opposite to the inner opening (4), and the first flow field improvement protrusion (8) extends toward the inner opening (4).

2. The non-fully enclosed current stabilizer according to claim 1, characterized in that, The end of the first flow field improvement convex edge (8) extends toward the first outer wall (31) and / or the second outer wall (32) and at least covers the first flow field improvement channel (6).

3. A non-fully enclosed current stabilizer according to claim 2, characterized in that, On a plane perpendicular to the height of the flow stabilizer: the ratio of the orthographic projection width A of the first flow field improvement channel (6) on this plane to the orthographic projection width of the first flow field improvement convex edge (8) on this plane is 1:0.5 to 1:

1.

4. A non-fully enclosed current stabilizer according to claim 1, characterized in that, The angle between the first flow field improvement convex edge (8) and the horizontal plane is 0 to 20°.

5. A non-fully enclosed current stabilizer according to any one of claims 1, 2, or 4, characterized in that, The portion of the first flow field improvement convex edge (8) opposite to the inner opening (4) extends toward the inner opening (4) and connects to the second end of the first inner wall (21) and the second end of the second inner wall (22).

6. A non-fully enclosed current stabilizer according to any one of claims 1-4, characterized in that, The end of the first flow field improvement convex edge (8) extends to the first outer wall (31) and / or the second outer wall (32) and at least covers a portion of the second flow field improvement channel (7) in the width direction.

7. A non-fully enclosed current stabilizer according to claim 6, characterized in that, On a plane perpendicular to the height direction of the flow stabilizer: the ratio of the orthographic projection width of the second flow field improvement channel (7) on this plane to the orthographic projection width of the first flow field improvement protrusion (8) extending to the first outer wall (31) and / or the second outer wall (32) on this plane is 1:0.5 to 1:

1.

8. A non-fully enclosed current stabilizer according to claim 6, characterized in that, One end of the first flow field improvement convex edge (8) extends to the first outer wall (31) and is flush with the second end of the first outer wall (31), and the other end of the first flow field improvement convex edge (8) extends to the second outer wall (32) and is flush with the second end of the second outer wall (32).

9. A non-fully enclosed current stabilizer according to any one of claims 1-4, characterized in that, The top of the first inner wall (21), the second inner wall (22) and the third inner wall (23) are each provided with a second flow field improvement protrusion (9) connected in sequence, and the second flow field improvement protrusion (9) extends toward the center of the inner frame (2).

10. A non-fully enclosed current stabilizer according to claim 9, characterized in that, The height of the third inner wall (23) is greater than the height of the second outer wall (32), and the height of the second flow field improvement convex edge (9) is greater than the height of the first flow field improvement convex edge (8).

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