A steel ladle cover structure containing molded refractory material

Abstract

This utility model relates to the technical field of steel ladle cover structures, specifically a steel ladle cover structure containing shaped refractory material. It includes a steel ladle cover frame, within which multiple refractory material modules are arranged. Dovetail groove structures are fixedly connected to the outer sides of each refractory material module. Dovetail grooves adapted to the dovetail groove structures are formed on the outer side of the steel ladle cover frame. A thermal expansion adaptive component is provided at the bottom of the inner wall of each dovetail groove. In this utility model, the thermal expansion adaptive component, through the elastic deformation of the corrugated chromium-nickel alloy sheet, absorbs the expansion difference between the refractory material modules and the steel ladle cover frame, preventing structural cracking. Furthermore, the inclusion of an enhanced heat radiation reflection component enhances heat radiation reflection.

Description

Technical Field

[0001] This utility model relates to the technical field of steel ladle cover structures, and in particular to a steel ladle cover structure containing shaped refractory material. Background Technology

[0002] Steel ladles are essential containers for holding and smelting molten steel in metallurgical plants. Maintaining the temperature of the ladle is an effective measure to improve product quality and the technical and economic indicators of steelmaking. Steel ladles radiate heat into the air very quickly through their top opening. By covering the ladle, this radiative heat loss can be significantly reduced, achieving energy conservation and emission reduction.

[0003] A steel ladle cover structure containing shaped refractory material, with authorized publication number CN201922032U, includes a cover body, ceramic fiber, and refractory material. The cover body consists of a steel ladle cover frame, partitions, and baffles. The partitions are disposed within the steel ladle cover frame, and the baffles are welded to the lower part of the outer edge of the frame. Fixing components are installed between the outer edge of the steel ladle cover frame and the partitions. The refractory material is shaped and is placed within the space between the outer edge of the steel ladle cover frame and the baffles and partitions. The fixing components secure the shaped refractory material within the steel ladle cover frame. Mounting components are welded to the space within the partitions of the steel ladle cover frame. Ceramic fiber modules are also installed within the partitions, and these modules are connected to the steel ladle cover frame via the mounting components. This utility model's steel ladle cover structure containing shaped refractory material has advantages such as light weight, simple structure, reasonable design, good thermal insulation, low heat absorption, simple maintenance and operation, resistance to cracking and detachment, long service life, and low manufacturing cost.

[0004] Regarding the aforementioned technologies, the existing steel ladle cover structure has the following drawback: the steel frame and the refractory material will have an expansion difference at high temperatures, and the traditional rigid connection will cause the frame to deform or the refractory material to break. Therefore, this utility model provides a steel ladle cover structure containing shaped refractory material. Utility Model Content

[0005] The purpose of this application is to provide a steel ladle cover structure containing shaped refractory material, so as to solve the problem mentioned in the background art that the steel frame and refractory material will have an expansion difference at high temperature, and the traditional rigid connection will cause the frame to deform or the refractory material to break.

[0006] To achieve the above objectives, this application provides the following technical solution: a steel ladle cover structure containing shaped refractory material, comprising a steel ladle cover frame, wherein multiple refractory material modules are disposed within the steel ladle cover frame, and a dovetail groove structure is fixedly connected to the outer side of each refractory material module. A dovetail groove adapted to the dovetail groove structure is formed on the outer side of the steel ladle cover frame, and a thermal expansion adaptive component is disposed at the bottom of the inner wall of the dovetail groove. The thermal expansion adaptive component includes a corrugated chromium-nickel alloy sheet adapted to the dovetail groove structure disposed within the dovetail groove, a ceramic fiber pad is disposed on the outer side of the corrugated chromium-nickel alloy sheet, and an enhanced heat radiation reflection component is disposed on the outer side of each refractory material module.

[0007] Preferably, the refractory material module has multiple protrusions on its outer side, the outer side of the protrusions has a curved surface, and the surface of the protrusions is plasma-sprayed with an aluminum-magnesium spinel coating.

[0008] Preferably, a spiral groove is provided on the outer side of the steel ladle cover frame, and a cooling pipe is provided in the spiral groove. The two ends of the cooling pipe are fixedly connected to the output end and return end of an externally installed circulating cooling pump, respectively.

[0009] Preferably, an outer frame is provided on the outside of the steel ladle cover frame, and a rotating ring is fixedly connected to the outside of the outer frame.

[0010] Preferably, the outer side of the steel cover frame is provided with a groove that matches the rotating ring, the inner wall of the groove is provided with an internal thread, and the outer side of the rotating ring is provided with an external thread.

[0011] Preferably, a fixing ring is fixedly connected to the outer side of the outer frame, and both the fixing ring and the outer side of the steel cover frame are provided with flanges.

[0012] Preferably, the outer side of the steel ladle cover frame is provided with multiple reinforcing ribs, and the outer side of the fixing ring is provided with a cover plate.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] In this invention, the expansion difference between the refractory material module and the steel ladle cover frame can be absorbed by the elastic deformation of the corrugated chromium-nickel alloy sheet through the setting of the thermal expansion adaptive component, thus avoiding structural cracking. Furthermore, the expansion difference between the refractory material module and the steel ladle cover frame can be absorbed by the elastic deformation of the corrugated chromium-nickel alloy sheet, thus avoiding structural cracking. Moreover, the thermal radiation reflection enhancement component can enhance thermal radiation reflection. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view axial side view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the second-view axial side structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the spiral groove in this utility model;

[0019] Figure 4 for Figure 3 A magnified structural diagram at point A.

[0020] In the diagram: 1. Steel ladle cover frame; 2. Outer frame; 3. Reinforcing ribs; 4. Fixing ring; 5. Cover plate; 6. Flange; 7. Refractory material module; 8. Boss; 9. Curved surface; 10. Cooling pipe; 11. Spiral groove; 12. Dovetail groove structure; 13. Rotating ring; 14. Dovetail groove; 15. Corrugated chromium-nickel alloy sheet; 16. Ceramic fiber pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example: Reference Figure 1-4The diagram illustrates a steel ladle cover structure containing molded refractory material, comprising a steel ladle cover frame 1, which serves as the supporting skeleton for the entire steel ladle cover, providing an installation foundation for each component and ensuring overall structural stability. Multiple refractory material modules 7 are installed within the steel ladle cover frame 1, effectively preventing heat transfer from the interior of the ladle to the exterior and reducing heat loss. Dovetail groove structures 12 are fixedly connected to the outer sides of the refractory material modules 7, and dovetail grooves 14 adapted to the dovetail groove structures 12 are formed on the outer sides of the steel ladle cover frame 1. The two work together to achieve a stable connection between the refractory material modules 7 and the steel ladle cover frame 1, preventing the modules from loosening or falling off. A thermal expansion adaptive component is installed at the bottom of the inner wall of the dovetail groove 14; the thermal expansion adaptive component includes a corrugated chromium-nickel alloy sheet 15 adapted to the dovetail groove structure 12 and installed within the dovetail groove 14. This sheet has good elasticity and high-temperature resistance, and can compensate for the difference in thermal expansion between the refractory material modules 7 and the frame through its own deformation when the temperature changes, preventing structural damage due to thermal stress. A ceramic fiber pad 16 is provided on the outer side of the corrugated chromium-nickel alloy sheet 15, which enhances the sealing performance, reduces heat loss through gaps, and also acts as a buffer. An enhanced heat radiation reflector is provided on the outer side of the refractory material module 7, which reflects heat radiation from inside the ladle, further reducing heat loss. Multiple bosses 8 are provided on the outer side of the refractory material module 7, increasing the module's surface area, improving heat dissipation efficiency, and enhancing the module's structural strength. Curved surfaces 9 are provided on the outer side of the bosses 8, reducing thermal stress concentration and preventing cracks due to high temperatures. The surface of the bosses 8 is plasma-sprayed with an aluminum-magnesium spinel coating, which has a high melting point and good wear and corrosion resistance, improving the service life of the bosses and enhancing their high-temperature resistance. A spiral groove 11 is provided on the outer side of the ladle cover frame 1, providing installation space for the cooling pipes 10, and the spiral layout ensures full contact between the cooling pipes and the frame. A cooling pipe 10 is installed inside the spiral groove 11. The two ends of the cooling pipe 10 are fixedly connected to the output end and return end of the externally installed circulating cooling pump, respectively. The circulating cooling medium carries away the heat absorbed by the frame, reduces the frame temperature, and prevents it from deforming due to high temperature. An outer frame 2 is installed on the outside of the steel cladding cover frame 1. The outer frame 2 plays an auxiliary support and protection role for the steel cladding cover frame 1, and enhances the impact resistance of the overall structure. A rotating ring 13 is fixedly connected to the outer side of the outer frame 2, facilitating the rotation of the ladle cover and making it easy to open and close the ladle. A groove adapted to the rotating ring 13 is provided on the outer side of the ladle cover frame 1. The inner wall of the groove is provided with internal threads, and the outer side of the rotating ring 13 is provided with external threads. The threaded engagement ensures a stable connection between the rotating ring 13 and the frame, and the installation position of the rotating ring can be adjusted through the threads. A fixing ring 4 is fixedly connected to the outer side of the outer frame 2. Both the fixing ring 4 and the outer side of the ladle cover frame 1 are provided with flanges 6. The flanges 6 are used to connect and fix the ladle cover to other equipment, ensuring the sealing and reliability of the connection. Multiple reinforcing ribs 3 are provided on the outer side of the ladle cover frame 1, which can enhance the structural strength and rigidity of the ladle cover frame 1 and prevent the frame from deforming under stress or high temperature.A cover plate 5 is provided on the outside of the fixing ring 4 to protect the fixing ring and related connecting parts and prevent dust and impurities from entering and affecting the connection performance.

[0024] The working principle of this utility model is as follows: the elastic deformation of the corrugated chromium-nickel alloy sheet 15 can absorb the expansion difference between the refractory material module 7 and the steel ladle cover frame 1, thus avoiding structural cracking. The thermal expansion adaptive component allows the refractory material module 7 to expand and contract freely during rapid cooling and heating. The protrusion 8 enhances heat radiation reflection. Coolant is introduced into the cooling pipe 10 through an externally installed circulating cooling pump, which cools the refractory material surface to form a stable sintered layer and reduces the slag penetration depth.

[0025] 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 steel ladle cover structure containing shaped refractory material, comprising a steel ladle cover frame (1), characterized in that: The steel ladle cover frame (1) is provided with multiple refractory material modules (7), and the outside of the refractory material module (7) is fixedly connected with a dovetail groove structure (12). The outside of the steel ladle cover frame (1) is provided with a dovetail groove (14) that is compatible with the dovetail groove structure (12). The bottom of the inner wall of the dovetail groove (14) is provided with a thermal expansion adaptive component. The thermal expansion adaptive component includes a corrugated chromium-nickel alloy sheet (15) adapted to the dovetail groove structure (12) and disposed in the dovetail groove (14). A ceramic fiber pad (16) is disposed on the outside of the corrugated chromium-nickel alloy sheet (15), and an enhanced thermal radiation reflection component is disposed on the outside of the refractory material module (7).

2. The steel ladle cover structure containing shaped refractory material according to claim 1, characterized in that: The refractory material module (7) has multiple bosses (8) on its outer side, and the outer side of the bosses (8) has a curved surface (9). The surface of the bosses (8) is plasma-sprayed with an aluminum-magnesium spinel coating.

3. The steel ladle cover structure containing shaped refractory material according to claim 2, characterized in that: The outer side of the steel cladding cover frame (1) is provided with a spiral groove (11), and a cooling pipe (10) is provided in the spiral groove (11). The two ends of the cooling pipe (10) are fixedly connected to the output end and return end of the externally provided circulating cooling pump, respectively.

4. The steel ladle cover structure containing shaped refractory material according to claim 1, characterized in that: An outer frame (2) is provided on the outside of the steel cladding cover frame (1), and a rotating ring (13) is fixedly connected to the outside of the outer frame (2).

5. The steel ladle cover structure containing shaped refractory material according to claim 4, characterized in that: The outer side of the steel cover frame (1) is provided with a groove that matches the rotating ring (13). The inner wall of the groove is provided with an internal thread, and the outer side of the rotating ring (13) is provided with an external thread.

6. The steel ladle cover structure containing shaped refractory material according to claim 5, characterized in that: A fixing ring (4) is fixedly connected to the outer side of the outer frame (2), and a flange (6) is provided on the outer side of both the fixing ring (4) and the outer side of the steel clasp frame (1).

7. A steel ladle cover structure containing molded refractory material according to claim 6, characterized in that: The outer side of the steel cladding cover frame (1) is provided with multiple reinforcing ribs (3), and the outer side of the fixing ring (4) is provided with a cover plate (5).

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