Combined type ladle refining furnace cover

Abstract

The utility model is suitable for the technical field of steelmaking, and provides a combined type ladle refining furnace cover which comprises a furnace cover main body which is used for covering the combined type ladle refining furnace main body and can be separated from the combined type ladle refining furnace main body, and the furnace cover main body is composed of an alloy shell, a temperature-resistant inner container and a plurality of reinforcing rib rings. The temperature-resistant inner container is formed by pouring refractory castable and a plurality of reinforcing rib rings together so as to enhance the structural strength of the temperature-resistant inner container, a through hole is formed in the temperature-resistant inner container, and an inserting pipe is arranged in the through hole and used for inserting an electrode pipe. According to the composite ladle refining furnace cover provided by the scheme, the problem that an existing non-water-cooled refining furnace cover is prone to structural cracking is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steelmaking, in particular to a composite ladle refining furnace cover. Background Art

[0002] In the steelmaking production system, the ladle refining furnace cover is one of the key equipment to ensure the quality and temperature stability of the molten steel in the furnace. The traditional ladle refining furnace cover design faces multiple challenges, especially in the harsh environment of high temperature, high pressure and frequent operation. The durability, thermal insulation performance and structural strength of the furnace cover are particularly important.

[0003] At present, non-water-cooled refining furnace covers are generally cast as a whole using refractory materials, and three electrode holes are reserved in the middle for the insertion of electrodes during the refining process. This design simplifies the structure of the furnace cover and reduces manufacturing costs. However, due to the hollow structure, the furnace cover is prone to structural cracking under high temperature. Once the furnace cover cracks, it will not only affect the normal progress of the refining process, but may also pose a threat to production safety. Utility Model Content

[0004] The utility model provides a composite ladle refining furnace cover, aiming to solve the problem that the current non-water-cooled refining furnace cover is prone to structural cracking.

[0005] The utility model is implemented as follows: a composite ladle refining furnace cover comprises: a cover body, which is used to cover the composite ladle refining furnace body and can be separated therefrom, the cover body being composed of an alloy shell, a heat-resistant inner liner and a plurality of reinforcing rib rings, the heat-resistant inner liner being cast together with a refractory castable and a plurality of reinforcing rib rings to enhance its structural strength, a through hole being provided on the heat-resistant inner liner, an insertion tube being provided in the through hole for inserting an electrode tube; a clamping mechanism, the clamping mechanism being provided on the alloy shell for clamping and limiting the cover body.

[0006] Preferably, the clamping mechanism includes: an assembly block symmetrically fixed on the alloy shell; a mounting frame arranged on the assembly block, and the mounting frame is limited by a first bolt; an electric hydraulic rod fixed on the mounting frame for adjusting the spacing, and a detachable splint is provided on the output rod of the electric hydraulic rod.

[0007] Preferably, a groove block is fixedly mounted on the clamping plate, a detachable plug-in block is provided in the groove block, and the plug-in block is fixedly connected to the output rod of the electric hydraulic rod.

[0008] Preferably, a detachable second bolt is provided on the groove block, and the second bolt thread passes through the plug-in block for limiting positioning.

[0009] Preferably, the splint is designed to be arc-shaped, with an inner pad laid on it, and the surface of the inner pad is provided with concave and convex blocks for increasing friction.

[0010] Preferably, a hanging ring is provided on the furnace cover body, and the bottom end of the hanging ring is fixed in the temperature-resistant inner container by casting.

[0011] Preferably, the upper portion of the furnace cover body is designed to be groove-shaped, while the lower portion is designed to be convex.

[0012] Compared with the related art, the composite ladle refining furnace cover provided by the utility model has the following beneficial effects:

[0013] Constructed by casting refractory castables with multiple reinforcing ribs, the mesh structure enhances the strength and stability of the inner liner. This significantly improves the structural strength of the heat-resistant inner liner, enabling it to withstand the immense pressure in high-temperature environments and preventing structural cracking. The addition of the reinforcing ribs also enhances the inner liner's wear resistance. The insert tube facilitates the insertion and securing of the electrode tube, ensuring a smooth refining process. Furthermore, the insert tube exhibits high-temperature resistance, enabling it to maintain stable operation in high-temperature environments. A clamping mechanism, incorporated into the alloy shell, secures and limits the main body of the furnace cover, preventing it from loosening or falling off due to high temperatures or mechanical stress. This improves the stability and reliability of the furnace cover, ensuring safety during the refining process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a composite ladle refining furnace cover provided by the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of the furnace cover main body in the present utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the furnace cover main body in the present utility model;

[0017] Figure 4 This is a schematic diagram of the main cross-sectional structure of the furnace cover body in the present utility model;

[0018] Figure 5 It is a schematic diagram of the top structure of the splint in the utility model.

[0019] Figure numerals: 1. furnace cover body; 2. alloy shell; 3. heat-resistant inner liner; 4. reinforcing rib ring; 5. plug-in tube; 6. assembly block; 7. mounting frame; 8. first bolt; 9. electric hydraulic rod; 10. clamping plate; 11. groove block; 12. plug-in block; 13. second bolt; 14. lifting ring; 15. inner pad; 16. upper trough; 17. composite ladle refining furnace body. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides a composite ladle refining furnace cover. Figure 1-5 As shown, the composite ladle refining furnace cover includes: a furnace cover body 1, which is used to cover the composite ladle refining furnace body 17 and can be separated from the furnace cover body 1, and the furnace cover body 1 is composed of an alloy shell 2, a heat-resistant inner liner 3 and a plurality of reinforcing rib rings 4. The heat-resistant inner liner 3 is cast together with a refractory castable and a plurality of reinforcing rib rings 4 to enhance its structural strength. A through hole is provided on the heat-resistant inner liner 3, and an insertion tube 5 is provided in the through hole for inserting the electrode tube; a clamping mechanism, which is provided on the alloy shell 2 and is used to clamp and limit the furnace cover body 1.

[0023] In this embodiment, the furnace cover body 1 is designed to cover the composite ladle refining furnace body 17 and be detachably connected thereto. This allows the furnace cover body 1 to be easily opened or closed when needed. The alloy shell 2, as the primary external structure of the furnace cover body 1, provides sufficient strength and rigidity to withstand the high temperatures and mechanical stresses of the refining process. The use of the alloy shell 2 enhances the overall structural strength of the furnace cover body 1, improving its resistance to high temperatures and wear. The heat-resistant inner liner 3 is cast from a refractory castable (high-alumina, mullite, and corundum refractory castables) along with multiple reinforcing ribs 4. The reinforcing ribs 4 form a mesh structure within the heat-resistant inner liner 3, enhancing its strength and stability. This design significantly improves the structural strength of the heat-resistant inner liner 3, enabling it to withstand the tremendous pressure in high-temperature environments, thereby avoiding the problem of structural cracking. Furthermore, the addition of the reinforcing ribs 4 improves the wear resistance of the inner liner and extends the service life of the furnace cover. The heat-resistant inner liner 3 is provided with a through hole, within which a plug-in tube 5 is disposed. The insertion tube 5 is used to insert the electrode tube so that operations such as electric heating or electric stirring can be performed during the refining process. The design of the insertion tube 5 allows the electrode tube to be easily inserted and fixed in the inner tank, thereby ensuring the smooth progress of the refining process. At the same time, the insertion tube 5 also has a certain high-temperature resistance and can maintain a stable working state in a high-temperature environment. The clamping mechanism is set on the alloy shell 2 to clamp the furnace cover body 1 and limit it. In this way, the furnace cover body 1 can be firmly fixed to the refining furnace body when closed to prevent it from loosening or falling off due to high temperature or mechanical stress. In summary, the composite ladle refining furnace cover provided by the utility model effectively solves the problem of structural cracking that is prone to occur in current non-water-cooled refining furnace covers by adopting structural designs such as alloy shell, heat-resistant inner tank and reinforcing rib ring. At the same time, the design of the insertion tube and clamping mechanism also improves the practicality and safety of the furnace cover.

[0024] In a further preferred embodiment of the present invention, the clamping mechanism includes: an assembly block 6 symmetrically fixed on the alloy shell 2; a mounting frame 7 arranged on the assembly block 6, and the mounting frame 7 is limited by a first bolt 8; an electric hydraulic rod 9 fixed on the mounting frame 7 for adjusting the spacing, and a detachable splint 10 is provided on the output rod of the electric hydraulic rod 9.

[0025] In this embodiment, the assembly blocks 6 are symmetrically fixed on the alloy shell 2, serving as a support base for the mounting frame 7. They ensure that the mounting frame 7 can be firmly mounted on the furnace cover body 1 and maintain a certain degree of symmetry and balance; the design of the assembly blocks 6 enables the mounting frame 7 to be firmly fixed on the furnace cover, thereby improving the stability and reliability of the clamping mechanism. At the same time, the symmetrical assembly blocks 6 also ensure the uniform distribution of the clamping mechanism on the furnace cover, avoiding deformation or damage caused by uneven force; the mounting frame 7 is set on the assembly blocks 6 and is limited by the first bolt 8. The first bolt 8 passes through the reserved holes on the mounting frame 7 and the assembly block 6 to firmly fix the mounting frame 7 on the assembly block 6; the combined use of the mounting frame 7 and the first bolt 8 ensures that the various components of the clamping mechanism can be tightly connected together to form an integral structure. This design not only improves the strength and stability of the clamping mechanism, but also facilitates subsequent maintenance and replacement work.

[0026] In a further preferred embodiment of the present invention, a groove block 11 is fixedly mounted on the clamping plate 10 , a detachable plug-in block 12 is provided in the groove block 11 , and the plug-in block 12 is fixedly connected to the output rod of the electric hydraulic rod 9 .

[0027] In this embodiment, the clamping plate 10 not only serves as a key component of the clamping mechanism, holding the furnace roof body 1, but also features a special design. A groove block 11 is fixedly mounted on the clamping plate 10, enhancing its connectivity and functionality. The groove block 11 is fixed to the clamping plate 10 and houses a detachable plug-in block 12. The shape and size of the groove block 11 match those of the plug-in block 12, ensuring its stable insertion and retention within the groove block 11.

[0028] In a further preferred embodiment of the present invention, a detachable second bolt 13 is provided on the groove block 11 , and the second bolt 13 is threadedly passed through the plug-in block 12 for limiting position.

[0029] In this embodiment, the groove block 11 not only serves as a mounting base for the plug-in block 12, but also undergoes further improvements. A removable second bolt 13 is provided on the groove block 11. This design enhances the stability of the connection between the groove block 11 and the plug-in block 12. The provision of the second bolt 13 makes the connection between the groove block 11 and the plug-in block 12 more secure and reliable.

[0030] In a further preferred embodiment of the present invention, the splint 10 is designed to be arc-shaped, and an inner pad 15 is laid thereon. The surface of the inner pad 15 is provided with concave and convex blocks for increasing friction.

[0031] In this embodiment, the plate 10 is curved, which allows it to better conform to the curved surface of the furnace cover body 1, thereby improving the stability and reliability of the clamping. The inner pad 15 is laid on the clamping plate 10, and its surface is provided with concave and convex blocks. These concave and convex blocks can increase the friction between the inner pad 15 and the furnace cover body 1, thereby ensuring that the clamping plate 10 can firmly grasp the furnace cover body 1 during clamping, preventing it from sliding or falling off.

[0032] In a further preferred embodiment of the present invention, a hanging ring 14 is provided on the furnace cover body 1, and the bottom end of the hanging ring 14 is fixed in the temperature-resistant inner container 3 by casting.

[0033] In this embodiment, a lifting ring 14 is provided on the furnace cover body 1. This design makes the furnace cover body 1 more convenient and safer during the lifting, transportation and installation process. The lifting ring 14 serves as a lifting point, which can bear the weight of the furnace cover body 1 and realize the movement of the furnace cover body 1 through lifting equipment (such as a crane, a hoist, etc.); the design of the lifting ring 14 significantly improves the lifting efficiency and safety of the furnace cover body 1. Through the lifting ring 14, the furnace cover body 1 can be easily lifted and transported, avoiding the difficulty and danger of manual transportation. At the same time, the firmness and reliability of the lifting ring 14 also ensure the stability and safety of the furnace cover body 1 during the lifting process.

[0034] In a further preferred embodiment of the present invention, the upper portion of the furnace cover body 1 is designed to be groove-shaped, while the lower portion is designed to be convex.

[0035] In this embodiment, the upper portion of the furnace cover body 1 is designed to be concave, while the lower portion is convex. The convex shape is mainly to match the furnace opening of the refining furnace and ensure that the furnace cover body 1 can cover the furnace opening tightly.

[0036] In summary, the refractory castable and multiple reinforcing rib rings 4 are cast together to form a mesh structure, which enhances the strength and stability of the inner liner; significantly improves the structural strength of the heat-resistant inner liner 3, enabling it to withstand the huge pressure in a high-temperature environment and avoid structural cracking. At the same time, the addition of the reinforcing rib rings 4 also improves the wear resistance of the inner liner; the plug-in tube 5 facilitates the insertion and fixation of the electrode tube, ensuring the smooth progress of the refining process. At the same time, the plug-in tube 5 also has a certain high-temperature resistance and can maintain a stable working state in a high-temperature environment; the clamping mechanism is set on the alloy shell 2, which is used to clamp the furnace cover body 1 and limit it to prevent it from loosening or falling off due to high temperature or mechanical stress; improves the stability and reliability of the furnace cover, and ensures safety during the refining process.

[0037] It is worth noting that the circuits, electronic components and modules involved in the present invention are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0038] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A composite ladle refining furnace cover, characterized in that: include: The furnace cover body is used to cover the composite ladle refining furnace body and can be separated from it. The furnace cover body is composed of an alloy shell, a heat-resistant inner shell and multiple reinforcing rib rings. The heat-resistant inner shell is cast together with the multiple reinforcing rib rings by refractory castables to enhance its structural strength. The heat-resistant inner shell is provided with a through hole, and an insertion tube is provided in the through hole for inserting the electrode tube; A clamping mechanism is provided on the alloy shell and is used for clamping and limiting the furnace cover body.

2. The composite ladle refining furnace cover according to claim 1, characterized in that: The clamping mechanism comprises: an assembly block symmetrically fixed to the alloy housing; A mounting bracket provided on the assembly block, the mounting bracket being limited in position by a first bolt; An electric hydraulic rod fixed on the mounting frame and used for adjusting the spacing, wherein a detachable clamping plate is provided on the output rod of the electric hydraulic rod.

3. The composite ladle refining furnace cover according to claim 2, characterized in that: A groove block is fixedly mounted on the clamping plate, a detachable plug-in block is arranged in the groove block, and the plug-in block is fixedly connected to the output rod of the electric hydraulic rod.

4. The composite ladle refining furnace cover according to claim 3, characterized in that: The groove block is provided with a detachable second bolt, and the second bolt thread passes through the plug-in block for limiting the position.

5. The composite ladle refining furnace cover according to claim 2, characterized in that: The splint is designed to be arc-shaped, and an inner pad is laid on it. The surface of the inner pad is provided with concave and convex blocks for increasing friction.

6. The composite ladle refining furnace cover according to claim 1, characterized in that: The furnace cover body is provided with a hanging ring, and the bottom end of the hanging ring is fixed in the temperature-resistant inner container by pouring.

7. The composite ladle refining furnace cover according to claim 1, characterized in that: The upper portion of the furnace cover body is designed to be in a groove shape, while the lower portion is in an outward convex shape.

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