Tundish system provided with tundish accident chute

Abstract

The utility model belongs to the technical field of steelmaking equipment, and discloses a tundish system with a tundish accident chute. The tundish system provided with the tundish accident chute comprises a tundish, a tundish overflow groove, the tundish accident chute and an accident collecting bag which are sequentially connected, the tundish overflow groove and the tundish accident chute can block and completely collect molten steel overflowing from the top of the tundish, and the tundish and the accident collecting bag are arranged in the vertical direction. According to the tundish system, the tundish overflow groove and the tundish accident chute are additionally arranged, so that the problem of overflow of molten steel at the top of the tundish is effectively solved, safety accidents caused by overflow of the molten steel are avoided, and the safety of the steelmaking process is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steelmaking equipment, especially a tundish system provided with a tundish accident chute. BACKGROUND

[0002] Tundish metallurgy is a special secondary refining technology, and is a key link for guaranteeing obtaining excellent steel quality from the production process of steel smelting and refining to solid-state continuous casting billet.

[0003] The tundish generally has the following functions:

[0004] Stabilize the steel flow and reduce the scouring of the steel flow on the primary shell in the crystallizer. Store the molten steel and ensure the uniformity of the molten steel temperature. Separate the non-metallic inclusions from the molten steel and make them float up. In a multi-flow continuous casting machine, the tundish distributes the molten steel to each crystallizer and plays a role of flow distribution.

[0005] At present, the tundish may sometimes cause molten steel overflow during the production process. The high-temperature molten steel overflowed may cause great safety hazards to the production, greatly waste raw materials, increase the production cost of the enterprise, reduce the production efficiency, and bring great inconvenience to the production. SUMMARY

[0006] The utility model discloses a tundish system provided with a tundish accident chute.

[0007] The utility model discloses a tundish system provided with a tundish accident chute.

[0008] A tundish system provided with a tundish accident chute, the system includes tundish, tundish overflow chute, tundish accident chute and accident collection package that are sequentially connected and arranged, tundish overflow chute, tundish accident chute can all block and collect the molten steel overflowed from the top of tundish, tundish, accident collection package are all arranged along the vertical direction;

[0009] The intermediate ladle overflow chute is arranged downwardly along the horizontal direction, one end of the intermediate ladle overflow chute is arranged as an input end, the other end of the intermediate ladle overflow chute is arranged as an output end, the input end of the intermediate ladle overflow chute is arranged above the output end of the intermediate ladle overflow chute, the input end of the intermediate ladle overflow chute can be connected with the overflowing molten steel of the intermediate ladle, and the overflowing molten steel of the intermediate ladle can be completely input into the input end of the intermediate ladle overflow chute; the output end of the intermediate ladle overflow chute can output the overflowing molten steel of the intermediate ladle input into the input end of the intermediate ladle overflow chute.

[0010] The intermediate ladle accident chute is arranged downwardly along the horizontal direction, one end of the intermediate ladle accident chute is arranged as an input end, the other end of the intermediate ladle accident chute is arranged as an output end, the input end of the intermediate ladle accident chute is arranged above the output end of the intermediate ladle accident chute, the output end of the intermediate ladle overflow chute is arranged directly above the input end of the intermediate ladle accident chute, the overflowing molten steel of the intermediate ladle accident chute can be completely input into the input end of the intermediate ladle accident chute; the output end of the intermediate ladle accident chute can output the overflowing molten steel of the intermediate ladle input into the input end of the intermediate ladle accident chute.

[0011] The accident collection ladle is arranged directly below the output end of the intermediate ladle accident chute, and the overflowing molten steel of the intermediate ladle accident chute can be completely input into the accident collection ladle.

[0012] Further, the intermediate ladle, the intermediate ladle overflow chute, the intermediate ladle accident chute and the accident collection ladle are arranged in sequence and can be detachably connected.

[0013] Further, the intermediate ladle system further comprises an overflow ring, the overflow ring is arranged in close connection with the intermediate ladle overflow chute and the intermediate ladle, the overflow ring is coaxially and closely arranged on the intermediate ladle below the molten steel overflowing outlet of the intermediate ladle, an overflow ring groove is integrally arranged in the overflow ring, the overflow ring groove is coaxially arranged with the overflow ring, the overflow ring groove is arranged along the vertical direction, the overflow ring groove is in the shape of a groove with an open top, the overflow ring groove can contain all the molten steel overflowing from the intermediate ladle, and the overflow ring groove is arranged in close communication with the intermediate ladle overflow chute.

[0014] Further, the intermediate ladle overflow chute is arranged in the shape of a U-shaped groove.

[0015] Further, the intermediate ladle overflow chute and the chute valve are arranged in close connection.

[0016] Further, the intermediate ladle overflow chute is made of 15CrMo high-temperature-resistant steel plate.

[0017] Further, the intermediate ladle overflow chute comprises a frame layer and a heat-resistant layer, both the frame layer and the heat-resistant layer are arranged along the longitudinal direction, and the heat-resistant layer is arranged in close connection with the inner surface of the frame layer in parallel; the frame layer is in the shape of a groove with an open top and a hollow interior, the bottom of the frame layer is arranged in the shape of a plane along the longitudinal direction, and the longitudinal sides of the frame layer are arranged outwardly along the longitudinal direction.

[0018] The middle package emergency chute comprises a frame layer and a heat-resistant layer, both of which are arranged along the longitudinal direction, the heat-resistant layer is arranged in parallel and closely on the inner surface of the frame layer, the longitudinal width of the heat-resistant layer is greater than that of the middle package overflow chute, so that the overflow molten steel in the middle package overflow chute can flow into the middle package emergency chute; the frame layer is in the form of a hollow groove with an open top, the bottom of the frame layer is arranged in a plane along the longitudinal direction, and the longitudinal sides of the frame layer are arranged outwardly and obliquely along the longitudinal direction; the heat-resistant layer and the frame layer are arranged in matching mode, and the heat-resistant layer and the frame layer are arranged in close contact.

[0019] Further, the frame layer material is arranged as a 15CrMo high-temperature-resistant steel plate.

[0020] Further, the heat-resistant layer material is arranged as a heat-resistant brick.

[0021] The advantages and positive effects achieved by the utility model are as follows:

[0022] 1. The middle package system effectively solves the problem of molten steel overflow at the top of the middle package by adding the middle package overflow chute and the middle package emergency chute, avoids safety accidents caused by molten steel overflow, and significantly improves the safety of the steelmaking process. The middle package overflow chute can quickly collect and block the molten steel overflowing from the top of the middle package, and the middle package emergency chute can smoothly guide the molten steel to the emergency collection package, realizing effective recovery and treatment of the molten steel, reducing resource waste and preventing accidents. The middle package system greatly saves raw materials, reduces production costs, improves production efficiency, and brings great convenience to production.

[0023] 2. The middle package emergency chute device can effectively collect and guide the molten steel that may overflow from the top of the middle package, avoid safety accidents such as fire and explosion caused by molten steel overflow, and significantly improve the safety of the steelmaking operation site. This design fundamentally solves the long-existing safety hazards and provides a safer working environment for workers. The middle package overflow chute, the middle package emergency chute, and the emergency collection package are connected in a detachable manner, which not only facilitates the installation, disassembly, and daily maintenance of the equipment, but also improves the flexibility and adaptability of the system. This design makes it more efficient and convenient to replace damaged parts or upgrade the system, reducing downtime and maintenance costs. The middle package emergency chute adopts a composite structure of 15CrMo high-temperature-resistant steel plate and heat-resistant brick, which not only improves the high-temperature resistance and thermal stability of the equipment, but also enhances the durability and safety of the equipment through optimized structural design. The combination of material science and structural optimization provides a strong guarantee for the long-term stable operation of the steelmaking system. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1A structure connection main view schematic diagram of the utility model;

[0025] Figure 2 A structure connection three-dimensional schematic diagram of the utility model's overflow ring piece;

[0026] Figure 3 For Figure 1 A structure connection left view sectional view schematic diagram of the utility model's tundish emergency chute;

[0027] Figure 4 For Figure 1 A structure connection left view sectional view schematic diagram of the utility model's tundish overflow chute;

[0028] Figure 5 For Figure 1 A structure connection main view schematic diagram with size mark. DETAILED DESCRIPTION

[0029] The application will be further described in conjunction with specific embodiments, the following examples are only descriptive, not limiting, and cannot limit the protection scope of the application.

[0030] The raw materials used in the application are conventional commercially available products, unless otherwise specified, the methods used in the application are conventional methods in the art, unless otherwise specified, and the quality of each substance used in the application is conventional quality. The structures and connection relationships not described in detail in the application can be understood as conventional technical means in the art.

[0031] A tundish system provided with a tundish emergency chute, as shown in Figures 1 to 4 The system comprises a tundish 1, a tundish overflow chute 4, a tundish emergency chute 2 and an emergency collection tundish 3 arranged in sequence, the tundish overflow chute and the tundish emergency chute can block and collect all the molten steel overflowing from the top of the tundish, and the tundish and the emergency collection tundish are arranged in a vertical direction;

[0032] The tundish overflow chute is arranged downwardly in a horizontal direction, one horizontal end of the tundish overflow chute is arranged as an input end (not labeled in the figure), the other horizontal end of the tundish overflow chute is arranged as an output end (not labeled in the figure), the input end of the tundish overflow chute is arranged above the output end of the tundish overflow chute, the input end of the tundish overflow chute can be arranged in connection with the molten steel overflowing from the tundish, the molten steel overflowing from the tundish can be completely input to the input end of the tundish overflow chute, and the output end of the tundish overflow chute can output the molten steel overflowing from the tundish input to the input end of the tundish overflow chute. After the molten steel overflowing from the tundish is input to the input end of the tundish overflow chute, it flows downward under the action of gravity along the tundish overflow chute, and then flows to the output end of the tundish overflow chute and continues to flow downward;

[0033] The intermediate ladle accident chute is arranged in a horizontal direction and downwardly inclined, the horizontal one end of the intermediate ladle accident chute is arranged as an input end 21, the horizontal other end of the intermediate ladle accident chute is arranged as an output end 23, the input end of the intermediate ladle accident chute is arranged above the output end of the intermediate ladle accident chute, the output end of the intermediate ladle overflow chute is arranged directly above the input end of the intermediate ladle accident chute, the overflow molten steel of the intermediate ladle overflow chute can flow into the input end of the intermediate ladle accident chute, and the output end of the intermediate ladle accident chute can output the overflow molten steel of the intermediate ladle in the input end of the intermediate ladle accident chute. The overflow molten steel of the intermediate ladle overflow chute flows into the input end of the intermediate ladle accident chute, and then flows downwardly along the intermediate ladle accident chute under the action of gravity, and flows to the output end of the intermediate ladle accident chute and continues to flow downwardly.

[0034] The accident collection ladle is arranged directly below the output end of the intermediate ladle accident chute, the overflow molten steel of the intermediate ladle overflow chute can flow into the accident collection ladle, the accident collection ladle can collect the overflow molten steel of the intermediate ladle, and the overflow molten steel can be reused, thereby saving production cost and improving production safety.

[0035] When the intermediate ladle system is used, the input end of the intermediate ladle overflow chute is arranged in connection with the intermediate ladle, the intermediate ladle overflow chute is adjusted to find a suitable flow direction, then the input end of the intermediate ladle accident chute is arranged directly above the output end of the intermediate ladle overflow chute, so that the output end of the intermediate ladle overflow chute can output the overflow molten steel of the intermediate ladle to flow into the input end of the intermediate ladle accident chute, and then the output end of the intermediate ladle accident chute is arranged directly above the accident collection ladle, so that the output end of the intermediate ladle accident chute can output the overflow molten steel of the intermediate ladle to flow into the accident collection ladle, then water is poured to install and detect the whole system, and when the installation and detection are normal, the device can be put into production and used.

[0036] The intermediate ladle system effectively solves the problem of overflow of molten steel at the top of the intermediate ladle by adding the intermediate ladle overflow chute and the intermediate ladle accident chute, avoids safety accidents caused by overflow of molten steel, and significantly improves the safety of the steelmaking process. The intermediate ladle overflow chute can quickly collect and block the overflow of molten steel at the top of the intermediate ladle, and the intermediate ladle accident chute can smoothly guide the molten steel to the accident collection ladle, thereby realizing effective recovery and treatment of the molten steel, reducing resource waste and preventing accidents. The intermediate ladle system greatly saves raw materials, reduces production cost of enterprises, improves production efficiency, and brings great convenience to production.

[0037] The intermediate ladle system is provided with the intermediate ladle accident chute, which needs to be regularly checked and maintained and professionally trained and managed, so as to ensure that the intermediate ladle accident chute plays an important role in the steelmaking production process and guarantees production safety.

[0038] The tundish system can provide some ideas for the current lack of tundish accident chute requirements for tundish, lack of relevant standards and design.

[0039] In the embodiment, the tundish overflow chute, the tundish accident chute and the accident collection package are detachably connected, which facilitates the installation and disassembly of the equipment, facilitates the daily maintenance and replacement, and reduces the maintenance cost.

[0040] In the embodiment, the tundish system further comprises an overflow ring 11, which is closely connected with the tundish overflow chute and the tundish. The overflow ring is coaxially and closely detachably arranged on the tundish below the molten steel overflow outlet of the tundish. An overflow ring groove 12 is integrally formed in the overflow ring. The overflow ring groove is coaxially arranged with the overflow ring. The overflow ring groove is arranged in the vertical direction. The overflow ring groove is in the form of a slot with an open top. The overflow ring groove can contain all the molten steel overflowing from the tundish. The overflow ring groove is closely connected with the tundish overflow chute, so that all the molten steel contained in the overflow ring groove can flow into the tundish overflow chute, and then continue the subsequent operation, further ensuring that all the molten steel overflowing from the tundish can be collected, and ensuring the safety of the operation.

[0041] In the embodiment, the tundish overflow chute is in the form of a U-shaped groove.

[0042] In the embodiment, a chute valve (not shown in the figure) is arranged at the connection between the tundish overflow chute and the chute body. The chute valve can control the flow and closing of the molten steel overflowing from the tundish overflow chute.

[0043] Preferably, the tundish overflow chute is made of 15CrMo high-temperature-resistant steel plate, which can maintain high strength and toughness in a high-temperature environment, effectively resist thermal stress that may occur during molten steel transportation, and ensure the structural stability and service life of the tundish overflow chute.

[0044] In the embodiment, the tundish overflow chute comprises a frame layer 4-1 and a heat-resistant layer 4-2. Both the frame layer and the heat-resistant layer are arranged in the longitudinal direction. The heat-resistant layer is closely arranged in parallel on the inner surface of the frame layer. The frame layer is in the form of a slot with an open top and a hollow interior. The bottom of the frame layer is in the form of a plane and is arranged in the longitudinal direction. The longitudinal sides of the frame layer are inclined outward in the longitudinal direction. The heat-resistant layer and the frame layer are arranged in matching relationship. The heat-resistant layer and the frame layer are arranged in close contact. This structure can more effectively transport molten steel and ensure heat dispersion. The heat-resistant layer protects the tundish accident chute from fire accidents. At the same time, the frame layer supports the heat-resistant layer, prolongs the service life of the tundish accident chute, and improves safety. The heat-resistant layer prevents high-temperature molten steel from damaging the frame layer, further prolongs the service life of the tundish accident chute, and improves safety.

[0045] The middle ladle accident chute comprises a frame layer 22-1 and a heat-resistant layer 22-2, both of which are arranged along the longitudinal direction, and the heat-resistant layer is arranged in parallel and closely on the inner surface of the frame layer, and the longitudinal width of the heat-resistant layer is greater than that of the heat-resistant layer of the middle ladle overflow chute, so that the overflow molten steel in the middle ladle overflow chute can all flow into the middle ladle accident chute; the frame layer is in the form of a hollow groove with an open top, the bottom of the frame layer is arranged in a plane along the longitudinal direction, and the longitudinal sides of the frame layer are arranged outwardly and inclined along the longitudinal direction. The heat-resistant layer and the frame layer are arranged in matching and inner-layer fitting modes, which can more effectively transport the molten steel and ensure heat dispersion, and the heat-resistant layer protects the middle ladle accident chute from fire accidents, meanwhile, the frame layer supports the heat-resistant layer and prolongs the service life of the middle ladle accident chute, and the heat-resistant layer avoids high-temperature damage to the frame layer and further prolongs the service life of the middle ladle accident chute and improves safety.

[0046] Preferably, the frame layer is made of 15CrMo high-temperature-resistant steel plate, which can maintain high strength and toughness in a high-temperature environment, effectively resist thermal stress that may be generated during molten steel transportation, and ensure the structural stability and service life of the chute body.

[0047] Preferably, the heat-resistant layer is made of heat-resistant bricks, which have extremely high fire resistance and good thermal stability, can directly withstand the erosion of high-temperature molten steel without being easily damaged, effectively isolate the influence of high temperature on the frame layer, and further improve the safety performance of the middle ladle accident chute.

[0048] The middle ladle accident chute device in the utility model can effectively collect and guide the molten steel that may overflow from the top of the middle ladle, avoid fire, explosion and other safety accidents caused by molten steel overflow, and significantly improve the safety of the steelmaking operation site. This design fundamentally solves the long-existing safety hazards and provides a safer working environment for workers. The middle ladle overflow chute, the middle ladle accident chute and the accident collection package are connected in a detachable manner, which not only facilitates the installation, disassembly and daily maintenance of the equipment, but also improves the flexibility and adaptability of the system. This design makes it more efficient and convenient to replace damaged parts or upgrade the system, reduces downtime and maintenance costs. The middle ladle accident chute adopts a composite structure of 15CrMo high-temperature-resistant steel plate and heat-resistant bricks, which not only improves the high-temperature resistance and thermal stability of the equipment, but also enhances the durability and safety of the equipment through optimized structural design. The combination of material science and structural optimization provides a strong guarantee for the long-term stable operation of the steelmaking system.

[0049] Although the embodiments of the present application have been disclosed for illustrative purposes, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present application and the appended claims, and thus the scope of the present application is not limited to the disclosed embodiments.

Claims

1. A tundish system provided with a tundish emergency chute, characterized by: The system comprises a tundish, a tundish overflow chute, a tundish emergency chute and an emergency collection ladle arranged in sequence, the tundish overflow chute and the tundish emergency chute can block and collect all the molten steel overflowing from the top of the tundish, the tundish and the emergency collection ladle are arranged in the vertical direction; The tundish overflow chute is arranged downwardly in the horizontal direction, one horizontal end of the tundish overflow chute is arranged as an input end, the other horizontal end of the tundish overflow chute is arranged as an output end, the input end of the tundish overflow chute is arranged above the output end of the tundish overflow chute, the input end of the tundish overflow chute can be connected with the molten steel overflowing from the tundish, the molten steel overflowing from the tundish can be completely input into the input end of the tundish overflow chute, and the output end of the tundish overflow chute can output the molten steel overflowing from the tundish input into the input end of the tundish overflow chute; The tundish emergency chute is arranged downwardly in the horizontal direction, one horizontal end of the tundish emergency chute is arranged as an input end, the other horizontal end of the tundish emergency chute is arranged as an output end, the input end of the tundish emergency chute is arranged above the output end of the tundish emergency chute, the output end of the tundish overflow chute is arranged directly above the input end of the tundish emergency chute, the molten steel overflowing downwardly from the tundish overflow chute can be completely flowed into the input end of the tundish emergency chute, and the output end of the tundish emergency chute can output the molten steel overflowing from the tundish input into the input end of the tundish emergency chute; The emergency collection ladle is arranged directly below the output end of the tundish emergency chute, and the molten steel overflowing downwardly from the tundish overflow chute can be completely flowed into the emergency collection ladle.

2. A tundish system provided with a tundish emergency chute according to claim 1, characterized in that: The tundish, the tundish overflow chute, the tundish emergency chute and the emergency collection ladle are arranged in sequence and can be detachably connected.

3. A tundish system provided with a tundish emergency chute according to claim 1, characterized in that: The tundish system further comprises an overflow ring, which is closely connected with the tundish overflow chute and the tundish, and is coaxially and closely detachably arranged on the tundish below the molten steel overflowing outlet of the tundish, an overflow ring groove is integrally formed in the overflow ring, the overflow ring groove is coaxially arranged with the overflow ring, the overflow ring groove is arranged in the vertical direction, the overflow ring groove is in the form of a groove with an open top, the overflow ring groove can contain all the molten steel overflowing from the tundish, and the overflow ring groove is closely connected with the tundish overflow chute.

4. A tundish system provided with a tundish emergency chute according to claim 1, characterized in that: The tundish overflow chute is arranged in the form of a U-shaped groove.

5. A tundish system provided with a tundish emergency chute according to claim 1, characterized in that: A chute valve is arranged at the connection between the tundish overflow chute and the chute body.

6. A tundish system provided with a tundish emergency chute according to claim 1, characterized in that: The tundish overflow chute is made of a 15CrMo high-temperature-resistant steel plate.

7. A tundish system provided with a tundish emergency chute according to any one of claims 1 to 6, characterized in that: The tundish overflow chute comprises a frame layer and a heat-resistant layer, both of which are arranged in the longitudinal direction, and the heat-resistant layer is closely arranged in parallel on the inner surface of the frame layer; the frame layer is in the form of a groove with an open top and a hollow interior, the bottom of the frame layer is arranged in the form of a plane and in the longitudinal direction, and the longitudinal sides of the frame layer are arranged outwardly and inclined in the longitudinal direction; The middle package accident chute comprises a frame layer and a heat-resistant layer, both of which are arranged along the longitudinal direction, the heat-resistant layer is arranged in parallel and closely on the inner surface of the frame layer, the longitudinal width of the heat-resistant layer is greater than the longitudinal width of the heat-resistant layer of the middle package overflow chute, so that the overflowing molten steel in the middle package overflow chute can all flow into the middle package accident chute; the frame layer is in the form of a hollow groove with an open top, the bottom of the frame layer is arranged in a plane along the longitudinal direction, the longitudinal sides of the frame layer are arranged outwardly and obliquely along the longitudinal direction, the heat-resistant layer and the frame layer are arranged in matching mode, and the heat-resistant layer and the frame layer are arranged in close contact.

8. A tundish system provided with a tundish emergency chute according to claim 7, characterized in that: The material of the frame layer is arranged as a 15CrMo high-temperature-resistant steel plate.

9. A tundish system provided with a tundish emergency chute according to claim 7, characterized in that: The material of the heat-resistant layer is arranged as a heat-resistant brick.

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