Vortex-proof ladle nozzle pocket block
By setting eddy current suppression grooves and suppression blocks in the bell-mouth section of the ladle nozzle seat brick, the problem of bell-mouth erosion caused by eddy currents was solved, achieving long service life and stable flow of the ladle nozzle seat brick, and improving the economy of the ladle.
Patent Information
- Application Number
- CN202520008218.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-01-03
AI Technical Summary
During use, the tundish nozzle seat bricks in steelmaking are prone to generating eddies, which can lead to erosion and expansion of the inner hole at the top of the bell mouth, affecting the service life and stability of the ladle and increasing the risk of steel leakage.
A vortex suppression groove is set in the flared section of the water inlet seat brick, and multiple suppression blocks are arranged in the groove. The groove and suppression blocks are arranged in a specific pattern to prevent vortex formation, including groove designs with different heights, widths and angles.
It effectively prevents eddy currents, extends the service life of the ladle nozzle seat bricks, ensures stable molten steel flow speed, and improves the overall service life of the ladle.
Smart Images
Figure CN223684442U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to steelmaking equipment technical field, specifically is a kind of anti-vortex ladle nozzle block. BACKGROUND
[0002] The nozzle block used on the steel ladle is a component that needs to be replaced, and the speed and stability of the molten steel flowing through the nozzle block directly affect the service life of the nozzle block. It is found in use that the molten steel is prone to generating vortex at the entrance part of the upper part of the nozzle block, and such vortex is prone to eroding the upper part of the nozzle block and causing the diameter of the upper part of the nozzle block to expand, which leads to the increase of the flow speed of the molten steel, and at the same time, is prone to causing the risk of leakage between the nozzle block of the steel ladle and the upper nozzle of the steel ladle, and reducing the stability of the molten steel, causing the nozzle block of the steel ladle and the slag line brick of the steel ladle to be out of synchronization, reducing the service life of the steel ladle, and affecting the economy of the steel ladle. SUMMARY
[0003] Therefore, the utility model wants to solve the technical problem to provide a kind of anti-vortex ladle nozzle block of long service life that prevents vortex.
[0004] To solve the above technical problems, the utility model provides the following technical scheme: an anti-vortex ladle nozzle block, comprising a matrix, a through hole is formed in the matrix, a horn section with gradually increasing inner diameter is connected to one end of the through hole, the small-diameter end of the horn section is connected to the through hole, the inner wall surface of the large-diameter end of the horn section is connected to the end surface of the matrix, at least one vortex suppression groove is formed in the inner wall surface of the horn section, and the vortex suppression groove is arranged along the depth direction of the horn section.
[0005] The above-mentioned anti-vortex ladle nozzle block is arranged with two or more suppression blocks in the vortex suppression groove, and the suppression blocks are fixedly connected to the groove bottom wall of the vortex suppression groove.
[0006] In the depth direction of the horn section, the width of the suppression block gradually narrows from the large-diameter end of the horn section inward, and two or more suppression blocks are arranged along the depth direction of the horn section.
[0007] In the depth direction of the horn section, the vortex suppression groove is arranged along the axial direction parallel to the through hole, and the width of the vortex suppression groove gradually narrows along the direction of the molten steel advancing.
[0008] The vortex-proof ladle nozzle seat brick has the vortex suppression groove, the vortex suppression groove comprises a first groove and a second groove, the first groove and the second groove are symmetrically arranged with respect to a longitudinal section passing through the parent axis; on a transverse section perpendicular to the parent axis: an extension line of a center line of the first groove coincides with a center line of the second groove after passing through a center point of a circle.
[0009] The vortex-proof ladle nozzle seat brick has the vortex suppression groove, the vortex suppression groove further comprises a third groove and a fourth groove, the third groove and the fourth groove are symmetrically arranged with respect to the longitudinal section passing through the parent axis; on the transverse section perpendicular to the parent axis: an extension line of a center line of the third groove coincides with a center line of the fourth groove after passing through the center point of the circle; the third groove and the fourth groove are staggered with the first groove and the second groove.
[0010] The vortex-proof ladle nozzle seat brick has the vortex suppression groove, the vortex suppression groove further comprises a fifth groove and a sixth groove, the fifth groove and the sixth groove are symmetrically arranged with respect to the longitudinal section passing through the parent axis; on the transverse section perpendicular to the parent axis: an extension line of a center line of the fifth groove coincides with a center line of the sixth groove after passing through the center point of the circle; the fifth groove and the sixth groove are staggered with the third groove and the fourth groove.
[0011] The vortex-proof ladle nozzle seat brick has the vortex suppression groove, the vortex suppression groove further comprises a fifth groove and a sixth groove, the fifth groove and the sixth groove are symmetrically arranged with respect to the longitudinal section passing through the parent axis; on the transverse section perpendicular to the parent axis: an extension line of a center line of the fifth groove coincides with a center line of the sixth groove after passing through the center point of the circle; the fifth groove and the sixth groove are staggered with the third groove and the fourth groove.
[0012] The vortex-proof ladle nozzle seat brick has the vortex suppression groove, the vortex suppression groove further comprises a fifth groove and a sixth groove, the fifth groove and the sixth groove are symmetrically arranged with respect to the longitudinal section passing through the parent axis; on the transverse section perpendicular to the parent axis: an extension line of a center line of the fifth groove coincides with a center line of the sixth groove after passing through the center point of the circle; the fifth groove and the sixth groove are staggered with the third groove and the fourth groove.
[0013] The anti-vortex steel ladle nozzle seat brick, the included angle a1 of the two side edges of the first groove and the included angle a2 of the two side edges of the second groove are both 25-40 degrees; the included angle a3 of the two side edges of the third groove and the included angle a4 of the two side edges of the fourth groove are both 10-20 degrees; the included angle a5 of the two side edges of the fifth groove and the included angle a6 of the two side edges of the sixth groove are both 20-30 degrees; the first groove, the third groove, the sixth groove, the second groove, the fourth groove and the fifth groove are sequentially arranged on the inner side wall surface of the vortex suppression groove in reverse along the clockwise direction, the included angle b1 of the center line of the first groove and the center line of the third groove is 45 degrees, the included angle b2 of the center line of the third groove and the center line of the sixth groove is 90 degrees, the included angle b3 of the center line of the sixth groove and the center line of the second groove is 45 degrees, the included angle b4 of the center line of the second groove and the center line of the fourth groove is 45 degrees, the included angle b5 of the center line of the fourth groove and the center line of the fifth groove is 90 degrees, and the included angle b6 of the center line of the fifth groove and the center line of the first groove is 45 degrees.
[0014] The technical scheme of the utility model achieves the following beneficial technical effects:
[0015] The utility model solves the problem that the molten steel in the horn section of the steel ladle nozzle seat brick is easy to produce vortex and the refractory is not resistant to molten steel washing. By arranging different vortex suppression grooves in the horn section of the steel ladle nozzle seat brick, the grooves of the same height are symmetrically distributed, three pairs of grooves with different heights, widths and different radii, so that the molten steel entering the horn section of the steel ladle nozzle seat brick does not produce vortex, the steel ladle nozzle seat brick does not appear obvious diameter expansion phenomenon within the normal service life range of 40 hours, the molten steel flow speed is stable, the service life of the steel ladle nozzle seat brick is greatly improved, and the overall service life of the steel ladle is prolonged. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 The perspective structure schematic view of the utility model;
[0017] Figure 2 The overhead structure schematic view of the utility model;
[0018] Figure 3 The cross section structure schematic view of the utility model;
[0019] Figure 4 The utility model Figure 3 The A place amplification structure schematic view of the utility model;
[0020] Figure 5 The overhead schematic view of the utility model between adjacent grooves.
[0021] The reference numerals in the figure are as follows: 1-Main body; 2-Through hole; 3-French mouth section; 4-Edge current suppression groove; 5-Suppression block; 6-First groove; 7-Second groove; 8-Third groove; 9-Fourth groove; 10-Fifth groove; 11-Sixth groove; 12-Zirconium core. Detailed Implementation
[0022] In this embodiment, an anti-vortex ladle nozzle seat brick is provided, such as... Figure 1 As shown, the device includes a mother body 1, which has a through hole 2. A zirconium core 12 is installed in the through hole 2. One end of the zirconium core 12 in the through hole 2 is a flared section 3 with a gradually increasing inner diameter. The small diameter end of the flared section 3 is connected to the through hole 2, and the inner wall surface of the large diameter end of the flared section 3 is connected to the end face of the mother body 1. In actual use, the zirconium core 12 is formed in the mother body 1, and both the through hole 2 and the flared section 3 are formed in the zirconium core 12. Molten steel enters the zirconium core 12 through the flared section 3. At least one eddy current suppression groove 4 is formed on the inner wall surface of the flared section 3. The eddy current suppression groove 4 is set along the depth direction of the flared section 3.
[0023] like Figures 1-2 As shown, two or more suppression blocks 5 are arranged in the eddy current suppression groove 4. The suppression blocks 5 are fixedly connected to the bottom wall of the eddy current suppression groove 4. In the depth direction of the flared section 3, the width of the suppression block 5 gradually narrows from the large diameter end of the flared section 3 inward. In this embodiment, the suppression block 5 is triangular, with one side of the triangle facing the molten steel and the other two sides gradually narrowing towards the direction of molten steel flow. The thickness of the suppression block 5 is less than or equal to the depth of the eddy current suppression groove 4. Two or more suppression blocks 5 are arranged along the depth direction of the flared section 3.
[0024] like Figure 1 , Figure 3 As shown, in the depth direction of the flared section 3: the eddy current suppression groove 4 is arranged along the axial direction parallel to the through hole 2, and the width of the eddy current suppression groove 4 gradually narrows along the direction of molten steel advancement. In this embodiment, the eddy current suppression groove 4 is fan-shaped.
[0025] like Figure 2 As shown, the eddy current suppression groove 4 includes a first groove 6 and a second groove 7. The first groove 6 and the second groove 7 are symmetrically arranged about the longitudinal tangent plane passing through the axis of the parent body 1. On the transverse tangent plane perpendicular to the axis of the parent body 1, the extension line of the center line of the first groove 6 coincides with the center line of the second groove 7 after passing through the center point.
[0026] like Figure 2As shown, the vortex suppression groove 4 further comprises a third groove 8 and a fourth groove 9, which are symmetrically arranged about the longitudinal section passing through the axis of the parent body 1; on the transverse section perpendicular to the axis of the parent body 1: the extension line of the center line of the third groove 8 coincides with the center line of the fourth groove 9 after passing through the center point of the circle; the third groove 8 and the fourth groove 9 are staggered with the first groove 6 and the second groove 7.
[0027] As shown in the figure, Figure 2 As shown, the vortex suppression groove 4 further comprises a fifth groove 10 and a sixth groove 11, which are symmetrically arranged about the longitudinal section passing through the axis of the parent body 1; on the transverse section perpendicular to the axis of the parent body 1: the extension line of the center line of the fifth groove 10 coincides with the center line of the sixth groove 11 after passing through the center point of the circle; the fifth groove 10 and the sixth groove 11 are staggered with the third groove 8 and the fourth groove 9.
[0028] As shown in the figure, Figure 4 As shown in the figure, on the longitudinal section passing through the axis of the parent body 1: the height of the first groove 6 and the second groove 7 is equal to L1, the height of the third groove 8 and the fourth groove 9 is equal to L3, the height of the fifth groove 10 and the sixth groove 11 is equal to L2, L1>L2>L3; the bottom ends of the first groove 6, the second groove 7, the third groove 8, the fourth groove 9, the fifth groove 10 and the sixth groove 11 are connected with the bottom end of the trumpet mouth section 3, the top ends of the first groove 6 and the second groove 7 are connected with the top of the trumpet mouth section 3, the top ends of the third groove 8 and the fourth groove 9 are 10-30mm lower than the top end of the first groove 6, and the top ends of the fifth groove 10 and the sixth groove 11 are 5-20mm lower than the top end of the first groove 6.
[0029] The depths of the first groove 6, the second groove 7, the third groove 8, the fourth groove 9, the fifth groove 10 and the sixth groove 11 are 5-10mm, and the suppression blocks 5 in the first groove 6 and the second groove 7 are arranged in multiple rows in the height direction, and each row of suppression blocks 5 is staggered up and down. Similarly, multiple rows of suppression blocks 5 are also arranged in the third groove 8 and the fourth groove 9, and the third groove 8 and the fourth groove 9 are smaller and only have one column of suppression blocks 5 arranged in the height direction.
[0030] As shown in the figure, Figure 5As shown, the included angle a1 of the two side edges of the first groove 6 and the included angle a2 of the two side edges of the second groove 7 are both 25°-40°, preferably 30°; the included angle a3 of the two side edges of the third groove 8 and the included angle a4 of the two side edges of the fourth groove 9 are both 10°-20°, preferably 16°; the included angle a5 of the two side edges of the fifth groove 10 and the included angle a6 of the two side edges of the sixth groove 11 are both 20°-30°, preferably 25°; the first groove 6, the third groove 8, the sixth groove 11, the second groove 7, the fourth groove 9 and the fifth groove 10 are arranged in sequence on the inner side wall surface of the vortex suppression groove 4 in the reverse direction clockwise, the included angle b1 of the center line of the first groove 6 and the center line of the third groove 8 is 45°, the included angle b2 of the center line of the third groove 8 and the center line of the sixth groove 11 is 90°, the included angle b3 of the center line of the sixth groove 11 and the center line of the second groove 7 is 45°, the included angle b4 of the center line of the second groove 7 and the center line of the fourth groove 9 is 45°, the included angle b5 of the center line of the fourth groove 9 and the center line of the fifth groove 10 is 90°, and the included angle b6 of the center line of the fifth groove 10 and the center line of the first groove 6 is 45°.
[0031] Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present application, but not limitation on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The changes or variations derived therefrom are still within the protection scope of the claims of the present patent application.
Claims
1. A vortex-proof nozzle block for a ladle, comprising a matrix (1) having a through hole (2) formed therein, one end of the through hole (2) being connected to a flared section (3) having a gradually increasing inner diameter, the small-diameter end of the flared section (3) being connected to the through hole (2), and the inner wall surface of the large-diameter end of the flared section (3) being connected to the end surface of the matrix (1), characterized in that, At least one vortex suppression groove (4) is arranged on the inner wall surface of the horn section (3), and the vortex suppression groove (4) is arranged along the depth direction of the horn section (3).
2. A vortex-proof steel ladle nozzle seat brick according to claim 1, characterized in that Two or more suppression blocks (5) are arranged in the vortex suppression groove (4), and the suppression blocks (5) are fixedly connected to the groove bottom wall of the vortex suppression groove (4).
3. A vortex-proof steel ladle nozzle seat brick according to claim 2, characterized in that In the depth direction of the horn section (3), the width of the suppression block (5) gradually narrows from the large-diameter end of the horn section (3) to the inside, and two or more suppression blocks (5) are arranged along the depth direction of the horn section (3).
4. The anti-vortex steel ladle nozzle seat brick according to claim 1, characterized in that, In the depth direction of the horn section (3), the vortex suppression groove (4) is arranged along the axial direction parallel to the through hole (2), and the width of the vortex suppression groove (4) gradually narrows in the direction of the molten steel advancing.
5. A vortex-proof steel ladle nozzle seat brick according to any one of claims 1 to 4, characterized in that The vortex suppression groove (4) comprises a first groove (6) and a second groove (7), and the first groove (6) and the second groove (7) are symmetrically arranged about the longitudinal section passing through the axis of the parent body (1); on the transverse section perpendicular to the axis of the parent body (1), the extension line of the center line of the first groove (6) coincides with the center line of the second groove (7) after passing through the center point of the circle.
6. A vortex-proof steel ladle nozzle seat brick according to claim 5, characterized in that The vortex suppression groove (4) further comprises a third groove (8) and a fourth groove (9), and the third groove (8) and the fourth groove (9) are symmetrically arranged about the longitudinal section passing through the axis of the parent body (1); on the transverse section perpendicular to the axis of the parent body (1), the extension line of the center line of the third groove (8) coincides with the center line of the fourth groove (9) after passing through the center point of the circle; the third groove (8) and the fourth groove (9) are arranged staggered with the first groove (6) and the second groove (7).
7. A vortex-proof steel ladle nozzle seat brick according to claim 6, characterized in that The vortex suppression groove (4) further comprises a fifth groove (10) and a sixth groove (11), and the fifth groove (10) and the sixth groove (11) are symmetrically arranged about the longitudinal section passing through the axis of the parent body (1); on the transverse section perpendicular to the axis of the parent body (1), the extension line of the center line of the fifth groove (10) coincides with the center line of the sixth groove (11) after passing through the center point of the circle; the fifth groove (10) and the sixth groove (11) are arranged staggered with the third groove (8) and the fourth groove (9).
8. A vortex-proof steel ladle nozzle seat brick according to claim 7, characterized in that On the longitudinal section passing through the axis of the parent body (1), the height of the first groove (6) and the second groove (7) is equal to L1, the height of the third groove (8) and the fourth groove (9) is equal to L3, and the height of the fifth groove (10) and the sixth groove (11) is equal to L2, L1>L2>L3.
9. A vortex-proof steel ladle nozzle seat brick according to claim 8, characterized in that The bottom end of the first groove (6), the second groove (7), the third groove (8), the fourth groove (9), the fifth groove (10) and the sixth groove (11) is connected with the bottom end of the trumpet mouth section (3), the top end of the first groove (6) and the second groove (7) is connected with the top of the trumpet mouth section (3), the top end of the third groove (8) and the fourth groove (9) is 10-30mm lower than the top end of the first groove (6), the top end of the fifth groove (10) and the sixth groove (11) is 5-20mm lower than the top end of the first groove (6); the groove depth of the first groove (6), the second groove (7), the third groove (8), the fourth groove (9), the fifth groove (10) and the sixth groove (11) is 5-10mm.
10. A vortex-proof steel ladle nozzle seat brick according to claim 9, characterized in that The included angle a1 of the two side edges of the first groove (6) and the included angle a2 of the two side edges of the second groove (7) are both 25°-40°; the included angle a3 of the two side edges of the third groove (8) and the included angle a4 of the two side edges of the fourth groove (9) are both 10°-20°; the included angle a5 of the two side edges of the fifth groove (10) and the included angle a6 of the two side edges of the sixth groove (11) are both 20°-30°; the first groove (6), the third groove (8), the sixth groove (11), the second groove (7), the fourth groove (9) and the fifth groove (10) are arranged in turn on the inner side wall surface of the vortex suppression groove (4) in the reverse direction of the clockwise direction, the included angle b1 of the center line of the first groove (6) and the center line of the third groove (8) is 45°, the included angle b2 of the center line of the third groove (8) and the center line of the sixth groove (11) is 90°, the included angle b3 of the center line of the sixth groove (11) and the center line of the second groove (7) is 45°, the included angle b4 of the center line of the second groove (7) and the center line of the fourth groove (9) is 45°, the included angle b5 of the center line of the fourth groove (9) and the center line of the fifth groove (10) is 90°, and the included angle b6 of the center line of the fifth groove (10) and the center line of the first groove (6) is 45°.