Converter tapping hole lining structure capable of preventing steel drilling

Abstract

The utility model relates to the field of smelting equipment, and discloses an anti-drilling lining structure of a converter tapping hole, which comprises a converter shell, a lining component is mounted on the inner wall of the converter shell, filler is filled between the lining component and the inner wall of the converter shell, an inner side lining plate is mounted at the left end of the converter shell, and an outer side lining plate is mounted at the right end of the converter shell. The lining assembly comprises an inner brick cup, a connecting brick cup and an outer brick cup, the connecting brick cup is installed on the inner wall of the converter shell, the inner brick cup is installed at the position, close to the left end of the connecting brick cup, of the inner wall of the converter shell, the brick cup is installed at the position, close to the right end of the connecting brick cup, of the inner wall of the converter shell, and a pipeline is connected to the inner wall of the connecting brick cup in an inserted mode. According to the utility model, through the arrangement of the connecting seat brick, the connecting problem between the inner seat brick and the outer seat brick can be relieved, the impact resistance of the connecting part is ensured, and the connecting seat brick is integrally designed, so that the connecting seat brick is not easy to bleed out, and the transmission effect of the whole device is better.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment, and in particular to a converter tapping port lining structure for anti-drilling steel. Background Technology

[0002] A converter is an important steelmaking vessel. Its furnace body can rotate and is generally pear-shaped or cylindrical. The outer shell is welded from steel plates, and the inner lining is made of refractory materials. The converter tap hole is the only channel for molten steel to enter the ladle from the converter. When tapping, it must withstand the erosion and scouring of high-temperature molten steel and slag.

[0003] In existing technologies, the refractory materials used for the tapping area are generally divided into inner and outer lining bricks, sleeve bricks, and filler. The inner and outer lining bricks are relatively large and are usually constructed in several pieces during the design process. Since the multiple sets of lining bricks are not directly connected but are only fixed by the filler, the connection between the inner and outer lining bricks at the tapping area is very prone to movement, which can easily lead to steel drilling during use. Once steel drilling occurs, dismantling the furnace becomes very difficult, and there is also a risk of steel leakage during use. Therefore, a converter tapping lining structure to prevent steel drilling is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a converter tapping spout lining structure to prevent steel drilling, aiming to improve the problem in the prior art that "existing tapping spout lining structures generally adopt a splicing design, which is prone to steel drilling problems during use".

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a converter taphole lining structure for anti-drilling steel, comprising a converter shell, an inner lining assembly installed on the inner wall of the converter shell, a filler material filling the space between the inner lining assembly and the inner wall of the converter shell, an inner lining plate installed on the left end of the converter shell, the inner lining assembly comprising an inner seat brick, a connecting seat brick, and an outer seat brick, the connecting seat brick being installed on the inner wall of the converter shell, the inner seat brick being installed on the inner wall of the converter shell near the left end of the connecting seat brick, the outer seat brick being installed on the inner wall of the converter shell near the right end of the connecting seat brick, a pipe being inserted into the inner wall of the connecting seat brick, and a flange being installed on the right end of the converter shell.

[0006] As a further description of the above technical solution:

[0007] The inner seat brick is set in a trapezoidal shape, and there are multiple sets of the inner seat brick. After the multiple sets of the inner seat brick are spliced ​​together, they can form an inner channel. The inner channel as a whole is an isosceles trapezoid.

[0008] As a further description of the above technical solution:

[0009] The outer base brick is circular, and there are multiple sets of the outer base brick. After the multiple sets of the outer base brick are spliced ​​together, an outer channel can be formed. The outer channel is cylindrical in shape.

[0010] As a further description of the above technical solution:

[0011] The left end of the connecting seat brick is adapted to the inner seat brick, the right end of the connecting seat brick is adapted to the outer seat brick, and the inner wall of the circular groove is provided with a circular groove.

[0012] As a further description of the above technical solution:

[0013] Both the inner and outer seat bricks have circular grooves on their inner walls, and the pipe is inserted into the inner wall of the circular groove.

[0014] As a further description of the above technical solution:

[0015] The two sets of trapezoidal hypotenuses in the inner channel have the same inclination angle, specifically 10°-15°.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, by setting a connecting seat brick, the connecting seat brick can alleviate the connection problem between the inner seat brick and the outer seat brick, ensure the impact resistance of the connection point, and since the connecting seat brick itself is an integrated design, it is not easy for steel to be leaked, and the overall device has a better transmission effect.

[0018] 2. In this utility model, by setting a connecting seat brick, when installing the overall device, the connecting seat brick can be installed inside the converter shell first, so that the center position of the overall channel can be determined. Then, the inner seat brick and the outer seat brick can be installed in sequence with the connecting seat brick as a reference, making the installation of the overall device more convenient. Attached Figure Description

[0019] Figure 1 This is a side sectional view of the three-dimensional structure of the overall device in this utility model;

[0020] Figure 2 This is a three-dimensional structural disassembly diagram of the inner lining component in this utility model;

[0021] Figure 3 This is a top sectional view of the three-dimensional structure of the inner lining component in this utility model.

[0022] Legend:

[0023] 1. Converter shell; 2. Flange; 3. Filler material; 4. Inner lining plate; 5. Inner seat brick; 6. Connecting seat brick; 7. Outer seat brick; 8. Pipe; 9. Circular groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a converter taphole lining structure for anti-drilling steel, comprising a converter shell 1 for accommodating the overall device, an inner lining assembly for supporting pipes 8 installed on the inner wall of the converter shell 1, a filler material 3 for filling gaps between the inner lining assembly and the inner wall of the converter shell 1, an inner lining plate 4 for supporting the inner seat brick 5 installed at the left end of the converter shell 1, and the inner lining assembly including the inner seat brick 5, the connecting seat brick 6, and the outer seat brick 7. The connecting seat brick 6 is installed on the inner wall of the converter shell 1 and mainly serves to connect... The inner and outer components serve a dual purpose. During installation, the connecting seat brick 6 is installed first, providing a reference for the installation of the inner seat brick 5 and the outer seat brick 7. The inner seat brick 5 is installed on the inner wall of the converter shell 1 near the left end of the connecting seat brick 6. The inner seat brick 5 is mainly used to connect the internal channels of the converter. The outer seat brick 7 is installed on the inner wall of the converter shell 1 near the right end of the connecting seat brick 6. The outer seat brick 7 is mainly used to connect to the external channels. The inner wall of the connecting seat brick 6 is fitted with a pipe 8 for transmitting molten steel. The right end of the converter shell 1 is fitted with a flange 2 for connecting to the external channels.

[0026] Reference Figure 1 - Figure 3 The inner seat brick 5 is trapezoidal, and there are multiple sets of inner seat bricks 5. The inner walls of multiple sets of inner seat bricks 5 have the same shape, while the outer walls gradually change. After multiple sets of inner seat bricks 5 are spliced ​​together, they can form an inner channel. The inner channel is mainly used to allow molten steel inside the converter to flow outward. The inner channel is an isosceles trapezoid as a whole. The cross-section of the inner channel gradually increases from left to right. In this way, the area that can bear force at its left end is small, and the area that is impacted by molten steel is also small. This can reduce the impact of molten steel on the inner channel. The outer seat brick 7 is circular, and there are multiple sets of outer seat bricks 7. After multiple sets of outer seat bricks 7 are spliced ​​together, they can form an outer channel. The outer wall of the outer channel can be attached to the inner wall of the converter shell 1 through the filler material 3. The outer channel is cylindrical as a whole.

[0027] Reference Figure 1 - Figure 3The left end of the connecting seat brick 6 is adapted to the inner seat brick 5. After the left end of the connecting seat brick 6 is attached to the inner seat brick 5, the shape of the connection point can be completely fitted. The right end of the connecting seat brick 6 is adapted to the outer seat brick 7. The inner wall of the connecting seat brick 6 is provided with a circular groove 9 to accommodate the pipe 8. The inner walls of both the inner seat brick 5 and the outer seat brick 7 are provided with circular grooves 9. The pipe 8 is inserted into the inner wall of the circular groove 9. When installing the whole device, after the connecting seat brick 6 is installed, the center position of each component can be located by the circular groove 9. The two sets of trapezoidal inclined sides of the inner channel have the same inclination angle, specifically 10°-15°. If the inclination angle of the inner channel is too large, it will cause the difference between the inner seat bricks 5 to be too large, and it will also affect the setting of the circular groove 9. If the inclination angle is too small, it will cause the inner channel to lose its impact resistance.

[0028] Working principle: When installing the entire device, the connecting seat brick 6 should first be installed inside the converter shell 1. Then, filler material 3 should be used to fill the gap between the converter shell 1 and the connecting seat brick 6. After that, the inner seat brick 5 and the outer seat brick 7 can be installed simultaneously, using the connecting seat brick 6 as a reference. When installing the inner seat brick 5 and the outer seat brick 7, it is important to ensure that the center position of the inner seat brick 5 and the outer seat brick 7 is aligned with the center position of the connecting seat brick 6. After installing any set of inner seat brick 5 or outer seat brick 7, filler material 3 should be used to fill the gap. This can prevent the inner seat brick 5 and the outer seat brick 7 from shifting after calibration. After the inner seat brick 5, the connecting seat brick 6, and the outer seat brick 7 are all installed, the pipe 8 can be installed inside the circular groove 9, thus completing the installation of the entire device.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure of a refractory lining of a converter nozzle for preventing penetration of molten steel, comprising a converter shell (1), characterized in that: The inner wall of the converter shell (1) is provided with an inner lining assembly, the inner lining assembly and the inner wall of the converter shell (1) are filled with a filler (3), the left end of the converter shell (1) is provided with an inner lining plate (4), the inner lining assembly comprises an inner seat brick (5), a connecting seat brick (6) and an outer seat brick (7), the connecting seat brick (6) is installed on the inner wall of the converter shell (1), the inner seat brick (5) is installed on the inner wall of the converter shell (1) near the left end of the connecting seat brick (6), the outer seat brick (7) is installed on the inner wall of the converter shell (1) near the right end of the connecting seat brick (6), the inner wall of the connecting seat brick (6) is inserted with a pipeline (8), and the right end of the converter shell (1) is provided with a flange plate (2).

2. A refractory lining structure for a taphole of a converter for producing a drill-resistant steel according to claim 1, characterized in that: The inner seat brick (5) is trapezoidal, a plurality of groups of the inner seat brick (5) are provided, and the inner channel is formed after the plurality of groups of the inner seat brick (5) are spliced.

3. A refractory lining structure for a taphole of a converter for non- drilling steel according to claim 2, characterized in that: The outer seat brick (7) is circular, a plurality of groups of the outer seat brick (7) are provided, and the outer channel is formed after the plurality of groups of the outer seat brick (7) are spliced.

4. A refractory lining structure for a taphole of a converter for producing a drill-resistant steel according to claim 3, characterized in that: The left end of the connecting seat brick (6) is matched with the inner seat brick (5), the right end of the connecting seat brick (6) is matched with the outer seat brick (7), and the inner wall of the connecting seat brick (6) is provided with a circular groove (9).

5. A refractory lining structure for a taphole of a converter for non- drilling steel according to claim 4, characterized in that: The inner wall of the inner seat brick (5) and the outer seat brick (7) is provided with the circular groove (9), and the pipeline (8) is inserted into the inner wall of the circular groove (9).

6. A refractory lining structure for a taphole of a converter for producing a drill-resistant steel according to claim 2, characterized in that: The two groups of trapezoidal inclined edges of the inner channel have the same inclination angle, and the inclination angle is 10°-15°.

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