A ladle car argon blowing device

Abstract

This utility model provides an argon blowing device for a ladle car, belonging to the technical field of continuous casting equipment in the metallurgical industry. It includes a ladle, a ladle car, and an argon blowing supply system. A dry connector connected to the argon blowing supply system is installed between the ladle and the ladle car. The upper half of the dry connector is mounted on the ladle and sealed to the gas supply pipelines of two argon blowing holes inside the ladle. The lower half of the dry connector is mounted on the ladle car, its position corresponding to the position of the upper half when the ladle is placed on the ladle car. Simultaneously, the air inlet of the lower half of the dry connector is connected to the argon blowing supply system through a gas supply pipeline. When the ladle is placed in the predetermined position on the ladle car, the upper and lower halves of the dry connector automatically align, opening the argon gas passage. When the ladle is lifted off the ladle car, the upper and lower halves of the dry connector automatically separate and disconnect. This utility model can reduce safety hazards, shorten operation time, reduce the labor intensity of workers, and improve the reliability of the connection.

Description

Technical Field

[0001] This utility model belongs to the technical field of continuous casting equipment in the metallurgical industry, and particularly relates to an argon blowing device for a ladle car. Background Technology

[0002] In the continuous casting process of steelmaking, ladle refining (such as argon blowing and stirring) is a key technological step. Currently, the common operating procedure is as follows: after the ladle (empty or full) is placed on the ladle car, the operator manually connects the argon hose connector to the argon blowing port at the bottom of the ladle from a high-altitude platform; after the argon blowing process is completed, the operator needs to climb back onto the platform to manually disassemble the argon hose connector.

[0003] This manual connection method has the following significant drawbacks:

[0004] Significant safety hazards: The operating platform is located at a high position, and the steel ladle wall is often covered with high-temperature steel slag, posing a risk of falling steel slag that could injure or burn people; disassembling the hoses covered with steel slag is difficult and dangerous.

[0005] The operation is time-consuming: the process of manually climbing onto the platform, aligning, and connecting / disconnecting the hose is cumbersome, which prolongs the auxiliary operation time (i.e., "waiting time for steel"), resulting in a longer smelting cycle and affecting production efficiency.

[0006] High labor intensity: Frequent manual operation in high-altitude and high-temperature environments increases the labor intensity of workers.

[0007] Reliability issues: Manual connection may result in problems such as incomplete sealing or improper connection, affecting the argon blowing effect. Utility Model Content

[0008] This invention addresses the problem of manually connecting argon hoses to the argon blowing interface at the bottom of the ladle during continuous casting steelmaking. It provides an argon blowing device for a ladle car that reduces safety hazards, shortens operation time, reduces worker workload, and improves connection reliability.

[0009] The technical solution adopted by this utility model for an argon blowing device for a ladle car is as follows:

[0010] An argon blowing device for a ladle car includes a ladle, a ladle car, and an argon blowing supply system, characterized in that a dry connector connected to the argon blowing supply system is provided between the ladle and the ladle car.

[0011] The upper half of the dry connector is installed on the ladle and is sealed and connected to the gas supply lines of the two argon blowing holes inside the ladle. The lower half of the dry connector is installed on the ladle car, corresponding to the position of the upper half of the dry connector when the ladle is placed on the ladle car. At the same time, the air inlet of the lower half of the dry connector is connected to the argon blowing gas supply system through the gas supply line. When the ladle is placed in the predetermined position on the ladle car, the upper half and the lower half of the dry connector automatically align and open the argon gas passage. When the ladle is lifted off the ladle car, the upper half and the lower half of the dry connector automatically separate and disconnect.

[0012] A further improvement of this utility model is that: two dry connectors are symmetrically arranged on the upper half, and the upper half of each dry connector is located at 1 / 4 of the radius of the bottom of the ladle.

[0013] A further improvement of this utility model is that: a breathable brick is provided at the bottom of the ladle corresponding to each argon blowing hole, and the positions of the two breathable bricks correspond one-to-one with the positions of the upper half of the two dry connectors.

[0014] A further improvement of this utility model is that the air outlet of the upper part of each dry connector is connected to the corresponding breathable brick through a horizontal pipe and a vertical pipe connected in sequence.

[0015] A further improvement of this utility model is that the air inlet of the upper half of the dry connector is 20mm lower than the bottom of the ladle, and the air outlet of the upper half of the dry connector is recessed into the bottom of the ladle and 30-50mm higher than the bottom of the ladle.

[0016] A further improvement of this utility model is that the lower half of the dry connector is mounted on the ladle car via a buffer mechanism.

[0017] A further improvement of this utility model is that: the buffer mechanism includes a buffer hole with a diameter larger than that of the lower half of the dry connector, which is opened at the position corresponding to the lower half of the dry connector on the ladle car; the air inlet of the lower half of the dry connector is connected to the bottom of the buffer hole through a buffer spring; when the upper half of the dry connector and the lower half of the dry connector are aligned and connected, the upper half of the dry connector is inserted into the lower half of the dry connector, and at the same time the lower half of the dry connector moves downward into the buffer hole.

[0018] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows:

[0019] When the ladle is placed in the designated position on the ladle car, the upper and lower halves of the dry connector automatically align, opening the argon gas passage. This completely eliminates the risks of manual connection / disassembly operations by personnel in high-altitude, high-temperature, and slag-splashed environments, greatly improving operational safety. The connection and disconnection processes are automatically and instantly completed when the ladle is placed and lifted, reducing the manual operation time that originally required several minutes to a few seconds, reducing the labor intensity of workers, significantly reducing "waiting time for steel," effectively shortening the smelting cycle, and improving production efficiency. The use of a dedicated automatic quick connector ensures reliable sealing and a high connection success rate, avoiding problems such as poor connection and leakage that may occur due to manual operation, and ensuring stable argon blowing process performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an argon blowing device for a ladle car provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of a ladle in an argon blowing device for a ladle car provided by this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of a ladle car for an argon blowing device provided by this utility model.

[0023] In the attached diagram: 1. Steel ladle; 11. Permeable brick;

[0024] 2. Steel ladle car; 21. Buffer hole; 22. Buffer spring;

[0025] 3. Upper part of dry-type connector; 31. Horizontal pipe; 32. Vertical pipe;

[0026] 4. Lower half of the dry connector; 41. Gas supply pipeline. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this utility model.

[0028] refer to Figure 1 , Figure 2 and Figure 3 It is understood that the present invention includes a ladle cart 1, on which a ladle 1 is placed. A dry connector is provided between the ladle 1 and the ladle cart 1, which is connected to an argon gas supply system, so that when the ladle 1 is placed on the ladle cart 1, argon gas is blown into the ladle 1.

[0029] In this utility model, the dry connector is divided into an upper part 3 and a lower part 4. Specifically, the upper part 3 is mounted on the ladle 1 and is sealed and connected to the gas supply lines 41 of the two argon blowing holes inside the ladle 1; the lower part 4 is mounted on the ladle 1 carriage, and its position corresponds to the position of the upper part 3 when the ladle 1 is placed on the ladle 1 carriage. At the same time, the air inlet of the lower part 4 is connected to the argon blowing gas supply system through the gas supply lines 41. When the ladle 1 is placed in the predetermined position on the ladle 1 carriage, the upper part 3 and the lower part 4 of the dry connector automatically align and open the argon gas passage; when the ladle 1 is lifted off the ladle 1 carriage, the upper part 3 and the lower part 4 of the dry connector automatically separate and disconnect.

[0030] In this embodiment, two upper halves 3 of the dry connector are symmetrically arranged at the bottom of the ladle 1, and two lower halves 4 of the dry connector are also symmetrically arranged on the ladle 1 car. The position of the lower halves 4 of the dry connector corresponds to the position of the upper halves 3 of the dry connector when the ladle 1 is placed on the ladle 1 car.

[0031] In this embodiment, with the lifting lug connection line of ladle 1 as the reference axis, the upper half 3 of each dry connector is located at 1 / 4 of the radius of the bottom of ladle 1, thus avoiding the impact zone at the center of the bottom of ladle 1. A permeable brick 11 is provided at the bottom of ladle 1 corresponding to each argon blowing hole. The positions of two permeable bricks 11 correspond one-to-one with the positions of the upper half 3 of the two dry connectors. The outlet of each upper half 3 of the dry connector is connected to the corresponding permeable brick 11 via a horizontal pipe 31 and a vertical pipe 32 connected in sequence. The vertical pipe 32 is inclined at a 75°-80° angle to the vertical direction, thereby minimizing the compression deformation of the pipeline by the static pressure of molten steel. In this embodiment, the air inlet of the upper half 3 of the dry connector is 20mm lower than the bottom of ladle 1, and the air outlet of the upper half 3 of the dry connector is recessed into the bottom of ladle 1 and higher than the bottom of ladle 1 by 30-50mm, preferably 40mm.

[0032] In this embodiment, the lower half 4 of the dry connector is mounted on the ladle car 1 via a buffer mechanism. Specifically, the buffer mechanism includes a buffer hole 21 with a diameter larger than that of the lower half 4 of the dry connector, which is opened at the position corresponding to the lower half 4 of the dry connector on the ladle car 1. The air inlet of the lower half 4 of the dry connector is connected to the bottom of the buffer hole 21 via a buffer spring 22. When the upper half 3 of the dry connector is aligned and connected with the lower half 4 of the dry connector, the upper half 3 of the dry connector is inserted into the lower half 4 of the dry connector, and at the same time, the lower half 4 of the dry connector moves downward into the buffer hole 21, and the lower half 4 of the dry connector is compressed to be flush with the bottom of the ladle car 1.

[0033] The working principle of the argon blowing device for the ladle car in this embodiment is as follows:

[0034] When ladle 1 is positioned at its designated location on the ladle car, the upper half 3 and lower half 4 of the dry connector automatically align, opening the argon gas passage. This completely eliminates the risks associated with manual connection / disassembly operations performed by personnel in high-altitude, high-temperature, and slag-splashed environments, greatly improving operational safety. The connection and disconnection processes are completed automatically and instantly when ladle 1 is positioned and lifted, reducing the manual operation time that originally took several minutes to just a few seconds. This reduces the labor intensity of workers, significantly decreases "waiting time for steel," effectively shortens the smelting cycle, and improves production efficiency. The use of a dedicated automatic quick connector ensures reliable sealing and a high connection success rate, avoiding problems such as poor connection and leakage that may occur with manual operation, and guaranteeing stable argon blowing process performance.

[0035] In this embodiment, the horizontal pipe 31 and the vertical pipe 32 need to be pre-installed and positioned before the refractory material is poured, and wrapped with ceramic fiber blankets to buffer thermal stress; at the same time, the permeable brick 11 is reinforced with high-strength corundum castable with a compressive strength >60MPa.

[0036] In the above embodiments, this utility model provides an argon blowing device for ladle cars. This utility model completely eliminates the risks of manual connection / disassembly operations performed by operators in high-altitude, high-temperature, and slag-splashed environments, greatly improving operational safety. The connection and disconnection processes are automatically and instantly completed when the ladle is placed and lifted, reducing the manual operation time that originally required several minutes to a few seconds, reducing the labor intensity of workers, significantly reducing "waiting time for steel," effectively shortening the smelting cycle, and improving production efficiency. The use of a dedicated automatic quick connector ensures reliable sealing and a high connection success rate, avoiding problems such as poor connection and leakage that may be caused by manual operation, and ensuring stable argon blowing process effects.

[0037] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. An argon blowing device for a ladle car, comprising a ladle (1), a ladle car (1), and an argon blowing supply system, characterized in that: A dry connector connected to the argon gas supply system is provided between the ladle (1) and the ladle (1) car. The upper half (3) of the dry connector is set on the ladle (1) and is sealed and connected to the gas supply pipeline (41) of the two argon blowing holes inside the ladle (1); the lower half (4) of the dry connector is set on the ladle (1) car, and its position corresponds to the position of the upper half (3) of the dry connector when the ladle (1) is placed on the ladle (1) car. At the same time, the air inlet of the lower half (4) of the dry connector is connected to the argon blowing gas supply system through the gas supply pipeline (41); when the ladle (1) is placed in the predetermined work position of the ladle (1) car, the upper half (3) of the dry connector and the lower half (4) of the dry connector are automatically aligned and the argon gas passage is opened; when the ladle (1) is lifted off the ladle (1) car, the upper half (3) of the dry connector and the lower half (4) of the dry connector are automatically separated and disconnected.

2. The argon blowing device for a ladle car according to claim 1, characterized in that: The upper half (3) of the dry connector is symmetrically arranged in two parts, and each upper half (3) of the dry connector is located at 1 / 4 of the bottom radius of the ladle (1).

3. The argon blowing device for a ladle car according to claim 2, characterized in that: The bottom of the ladle (1) is provided with a permeable brick (11) corresponding to each argon blowing hole. The positions of the two permeable bricks (11) correspond one-to-one with the positions of the upper half (3) of the two dry connectors.

4. The argon blowing device for a ladle car according to claim 3, wherein: The air outlet of the upper half (3) of each dry connector is connected to the corresponding permeable brick (11) through a horizontal pipe (31) and a vertical pipe (32) connected in sequence.

5. The argon blowing device for a ladle car according to claim 1, characterized in that: The air inlet of the upper half (3) of the dry connector is 20mm lower than the bottom of the ladle (1), and the air outlet of the upper half (3) of the dry connector is recessed into the bottom of the ladle (1) and 30-50mm higher than the bottom of the ladle (1).

6. The argon blowing device for a ladle car according to any one of claims 1 to 5, characterized in that: The lower half (4) of the dry connector is mounted on the ladle (1) car via a buffer mechanism.

7. The argon blowing device for a ladle car according to claim 6, characterized in that: The buffer mechanism includes a buffer hole (21) with a diameter larger than that of the lower half (4) of the dry connector, which is opened at the position of the ladle (1) car corresponding to the lower half (4). The air inlet of the lower half (4) of the dry connector is connected to the bottom of the buffer hole (21) through a buffer spring (22). When the upper half (3) of the dry connector and the lower half (4) of the dry connector are aligned and connected, the upper half (3) of the dry connector is inserted into the lower half (4) of the dry connector, and at the same time the lower half (4) of the dry connector moves downward into the buffer hole (21).

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