Modular ceramic fiber embedded ladle cover plate

Abstract

The utility model discloses a modularization ceramic fibre inlay ladle cover plate, including cover plate base body, modularization heat preservation unit, sealing assembly and connecting fixed assembly, the cover plate base body is annular metal frame structure, has set up the mounting groove at the cover plate base body top, modularization heat preservation unit corresponds to insert in the mounting groove, ceramic fibre heat preservation layer fills in the metal shell inside, the high temperature resistant lining board fixed mounting is in the metal shell bottom, the utility model relates to metallurgical equipment accessory technical field, this modularization ceramic fibre inlay ladle cover plate adopts the structure of modularization heat preservation unit and cover plate base body plug -in cooperation, and single module can be through hoist handle independent disassembly, need not integral movement cover plate, only need to replace corresponding module when partial damage, and the maintenance cost and downtime are reduced greatly, the lifting lug of cover plate base body top is convenient to integral hoist, reduces the dependence to large -scale hoisting equipment, promotes installation and transfer efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical equipment accessories technology, specifically a modular ceramic fiber embedded steel ladle cover plate. Background Technology

[0002] As a core piece of equipment in steel smelting for holding and transferring molten steel, the performance of its matching cover plate directly affects the temperature stability of the molten steel, energy consumption, and operational safety. Existing ladle cover plates generally suffer from the following technical defects:

[0003] Most of them adopt an integral structure, and the materials are mostly single metals or ordinary refractory materials. The heat insulation effect is poor, and the heat loss during the transfer of molten steel is serious. This not only increases the energy consumption of smelting, but may also affect the quality of subsequent rolling due to insufficient temperature of molten steel. The integral cover plate is large in volume and heavy in weight. Installation, disassembly and maintenance require large lifting equipment, which is cumbersome and inefficient. When a part is damaged, the whole plate must be replaced, resulting in high maintenance costs and serious waste of resources.

[0004] To address these issues, this invention provides a modular ceramic fiber embedded steel cladding cover plate. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a modular ceramic fiber embedded steel cladding cover plate, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a modular ceramic fiber embedded steel cladding cover plate, comprising a cover plate substrate, a modular insulation unit, a sealing component, and a connecting and fixing component; the cover plate substrate is a ring-shaped metal frame structure, and an installation groove is provided on the top of the cover plate substrate; the modular insulation unit is inserted into the corresponding installation groove, and the modular insulation unit comprises a metal shell, a ceramic fiber insulation layer, and a high-temperature resistant liner; the metal shell is a box structure with an open top, the ceramic fiber insulation layer is filled inside the metal shell, and the high-temperature resistant liner is fixedly installed at the bottom of the metal shell.

[0007] Preferably, the sealing assembly includes an annular sealing groove, an elastic sealing gasket, and a clamping strip. The annular sealing groove is formed at the bottom edge of the cover plate base. The elastic sealing gasket is embedded in the annular sealing groove. The clamping strip is fixed to the top of the annular sealing groove by bolts, and the bottom of the elastic sealing gasket extends out of the annular sealing groove.

[0008] Preferably, the connecting and fixing assembly includes ear plates, which are symmetrically fixed to the outer side wall of the cover plate base. The ear plates have through holes, and locking bolts pass through the through holes and are threadedly connected to the pre-set connecting seat on the side wall of the ladle. The locking bolts are locked by the cooperation of nuts and locking bolts.

[0009] Preferably, a lifting handle is fixedly installed on the top of the metal casing.

[0010] Preferably, a number of lifting lugs are fixedly installed on the top of the cover plate base, and the lifting lugs are symmetrically distributed on both sides of the cover plate base.

[0011] Preferably, the cover plate substrate and the metal shell are both made of high-temperature resistant stainless steel, the ceramic fiber insulation layer is made of alumina-silica composite ceramic fiber cotton, and the high-temperature resistant lining is made of silicon nitride combined with silicon carbide.

[0012] Beneficial effects

[0013] This invention provides a modular ceramic fiber embedded steel cladding cover plate. Compared with the prior art, it has the following advantages:

[0014] 1. The modular ceramic fiber embedded steel cover plate adopts a structure in which modular insulation units are plugged into the cover plate base. Individual modules can be disassembled and installed independently through the lifting handle without moving the entire cover plate. When a part is damaged, only the corresponding module needs to be replaced, which greatly reduces maintenance costs and downtime. The lifting lugs on the top of the cover plate base facilitate the overall lifting, reduce reliance on large lifting equipment, and improve installation and transportation efficiency.

[0015] 2. The modular ceramic fiber embedded steel ladle cover plate and the modular insulation unit adopt a composite structure of "metal shell, ceramic fiber insulation layer and high temperature resistant lining". The alumina-silica composite ceramic fiber cotton has a low thermal conductivity and stable insulation effect. The silicon nitride combined with silicon carbide lining is resistant to high temperature impact. The synergistic effect of the two can effectively prevent the heat of molten steel from leaking out, reduce energy consumption and ensure the stability of molten steel temperature. At the same time, the elastic sealing gasket of the sealing component fits tightly with the ladle opening, reducing gap heat leakage and smoke and dust leakage, which has both insulation and environmental protection effects. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the external structure of this utility model;

[0018] Figure 2 This is a three-dimensional view of the overall disassembled structure of this utility model;

[0019] Figure 3 This is a three-dimensional view of the overall bottom structure of this utility model;

[0020] Figure 4 This is the front view of this utility model.

[0021] In the diagram: 1. Cover plate base; 11. Mounting groove; 12. Lifting lug; 2. Modular insulation unit; 21. Metal shell; 22. Ceramic fiber insulation layer; 23. High temperature resistant lining plate; 24. Lifting handle; 3. Sealing assembly; 31. Annular sealing groove; 32. Elastic sealing gasket; 33. Pressure strip; 34. Bolt; 4. Connecting and fixing assembly; 41. Ear plate; 42. Through hole. Detailed Implementation

[0022] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0023] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] Reference Figures 1 to 4 This application provides a modular ceramic fiber embedded steel ladle cover plate, including a cover plate substrate 1, a modular insulation unit 2, a sealing component 3, and a connecting and fixing component 4. The components work together to achieve efficient insulation, reliable sealing, and convenient disassembly and assembly of the steel ladle.

[0025] The cover plate base 1 is a ring-shaped metal frame structure that is adapted to the outer dimensions of the steel ladle opening. At least one set of mounting grooves 11 are provided on its top. The mounting grooves 11 penetrate the upper and lower surfaces of the cover plate base 1, providing a stable installation reference for the modular insulation unit 2. Several sets of symmetrically distributed lifting lugs 12 are fixedly installed on the top of the cover plate base 1 for lifting and transporting the entire cover plate, improving the ease of operation.

[0026] Modular insulation unit 2 is inserted into the mounting slot 11, and the bottom of modular insulation unit 2 is tightly fitted to the upper surface of the ladle opening to ensure the integrity of the insulation coverage. Modular insulation unit 2 includes a metal shell 21, a ceramic fiber insulation layer 22, and a high-temperature resistant liner 23. The metal shell 21 is a box structure with an open top, and a lifting handle 24 is fixedly installed on its top to facilitate the independent assembly and disassembly of a single modular insulation unit 2. The ceramic fiber insulation layer 22 is filled inside the metal shell 21 and is made of alumina-silica composite ceramic fiber cotton, which has excellent thermal insulation performance and high-temperature stability. The high-temperature resistant liner 23 is fixedly installed at the bottom of the metal shell 21 and is made of silicon nitride combined with silicon carbide material. It can directly withstand the high-temperature radiation and mechanical impact of molten steel and protect the ceramic fiber insulation layer 22 from damage.

[0027] The sealing assembly 3 includes an annular sealing groove 31, an elastic sealing gasket 32, and a pressing strip 33. The annular sealing groove 31 is opened at the bottom edge of the cover plate base 1 and is adapted to the edge of the ladle opening. The elastic sealing gasket 32 ​​is embedded in the annular sealing groove 31, with its bottom extending out of the annular sealing groove 31, and can be tightly fitted with the upper surface of the ladle opening to achieve gap sealing. The pressing strip 33 is fixed to the top of the annular sealing groove 31 by bolts 34 to press and fix the elastic sealing gasket 32, preventing the elastic sealing gasket 32 ​​from falling off or shifting under high temperature conditions.

[0028] The connecting and fixing assembly 4 includes an ear plate 41, which is symmetrically fixed to the outer side wall of the cover plate base 1. The ear plate 41 has a through hole 42. The locking bolt passes through the through hole 42 and is threadedly connected to the connecting seat preset on the side wall of the ladle. Then, the nut and the locking bolt are locked together to realize the detachable fixing of the cover plate base 1 and the ladle, ensuring the reliability of the connection.

[0029] Both the cover plate base 1 and the metal shell 21 are made of high-temperature resistant stainless steel, possessing excellent high-temperature corrosion resistance and structural strength, enabling them to adapt to the harsh high-temperature environment of metallurgical operations and extending the overall service life of the device.

[0030] In this embodiment: The cover plate base 1 is made of high-temperature resistant stainless steel plate welded into a ring frame structure. The outer diameter is adapted to the size of small and medium-sized steel ladle openings, and the thickness meets the structural strength requirements. Multiple sets of rectangular installation grooves 11 are evenly opened on the top, and the installation grooves 11 penetrate through the upper and lower surfaces of the cover plate base 1. Several sets of lifting lugs 12 are symmetrically welded on the top. The lifting lugs 12 are made of stainless steel plate of the same material bent into shape to ensure the lifting strength.

[0031] Modular insulation unit 2: The metal shell 21 is made of high-temperature resistant stainless steel plate by stamping, and its size is adapted to the mounting groove 11. Several sets of symmetrically distributed lifting handles 24 are welded on the top; the ceramic fiber insulation layer 22 is made of alumina-silica composite ceramic fiber cotton, which is cut to the size adapted to the inside of the metal shell 21 and then filled and compacted; the high-temperature resistant lining plate 23 is made of silicon nitride combined with silicon carbide material, and is fixed to the bottom of the metal shell 21 by high-temperature fire-resistant adhesive to ensure tight fit with the metal shell 21.

[0032] Sealing component 3: An annular sealing groove 31 is opened at the bottom edge of the cover plate base 1, and the groove size is adapted to the elastic sealing gasket 32; the elastic sealing gasket 32 ​​is made of high temperature resistant rubber material, is embedded in the annular sealing groove 31, and extends out of the groove at the bottom; the clamping strip 33 is made of stainless steel plate, and is evenly fixed along the circumference of the annular sealing groove 31 by stainless steel bolts 34, so as to press and fix the elastic sealing gasket 32.

[0033] Connection and fixing component 4: Ear plate 41 is made of high temperature resistant stainless steel plate and is symmetrically welded to the outer side wall of cover plate base 1. Through hole 42 is opened on ear plate 41; locking bolt is made of high temperature resistant high strength bolt and matched with anti-loosening nut to ensure secure locking.

[0034] Overall hoisting: Using the lifting lugs 12 on the top of the cover plate base 1, the cover plate is hoisted as a whole to the top of the ladle opening using a crane. The position is adjusted so that the cover plate base 1 is aligned with the ladle opening, and then slowly lowered to the upper surface of the ladle opening. At this time, the elastic sealing gasket 32 ​​is tightly fitted with the ladle opening, achieving a preliminary seal.

[0035] Fixing and locking: Pass the locking bolt through the through hole 42 of the ear plate 41 and connect it with the pre-set connecting seat on the side wall of the ladle. Tighten the anti-loosening nuts in batches and symmetrically to ensure that the cover plate base 1 is firmly fixed to the ladle and to prevent displacement during operation.

[0036] Insulation Operation: During the transfer of molten steel, the ceramic fiber insulation layer 22 of the modular insulation unit 2 prevents the heat of the molten steel from leaking out, and the high-temperature resistant lining plate 23 withstands high-temperature radiation and slight impact, protecting the ceramic fiber insulation layer 22; the elastic sealing gasket 32 ​​seals the gap between the cover plate and the ladle opening, reducing heat loss and smoke overflow.

[0037] Maintenance and Replacement: When a modular insulation unit 2 is damaged, such as cracked lining or detached insulation layer, loosen the corresponding area's cover plate base 1 for local fixation, lift out the damaged module using the hoisting handle 24, replace with a new modular insulation unit 2, and then re-fix it; regularly check the wear of the elastic sealing gasket 32. If it is aged or damaged, the clamping strip 33 can be removed and replaced. The maintenance operation is simple and convenient.

[0038] Furthermore, all contents not described in detail in this specification are existing technologies known to those skilled in the art, and all electrical components mentioned in this document are powered by external power supply lines.

[0039] Working principle: In use, the cover plate is first lifted to the ladle opening using lifting equipment via the symmetrically distributed lifting lugs 12 on the top of the cover plate base 1. The position is adjusted to align the cover plate base 1 with the ladle opening. After lowering, the elastic sealing gasket 32 ​​in the annular sealing groove 31 at the bottom edge of the cover plate base 1 tightly adheres to the upper surface of the ladle opening, achieving initial sealing. Next, the locking bolts are passed through the through holes 42 on the symmetrically fixed lug plates 41 on the outer wall of the cover plate base 1 and threaded into the pre-set connecting seats on the ladle side wall. The nuts are then tightened to complete the fixing of the cover plate base 1 to the ladle. During the steel transfer process, the modular insulation unit 2 inserted into the mounting groove 11 on the top of the cover plate base 1 provides insulation. Its metal outer shell 21 is filled with alumina... The silica composite ceramic fiber insulation layer 22 blocks the heat loss of molten steel. The silicon nitride and silicon carbide high-temperature resistant lining plate 23, which is fixed at the bottom of the metal shell 21, directly bears the high temperature radiation and mechanical impact of the molten steel, protecting the ceramic fiber insulation layer 22. When maintenance is required, loosen the locking bolts. If a modular insulation unit 2 is damaged, the damaged module can be lifted out of the mounting slot 11 and replaced through the lifting handle 24 on the top of its metal shell 21. If the elastic sealing gasket 32 ​​is aged and damaged, the elastic sealing gasket 32 ​​can be replaced by removing the clamping strip 33 fixed by the bolt 34 on the top of the annular sealing groove 31.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular ceramic fiber embedded steel cladding cover plate, characterized in that: It includes a cover plate base (1), a modular insulation unit (2), a sealing component (3), and a connecting and fixing component (4); The cover plate base (1) is a ring-shaped metal frame structure, and the top of the cover plate base (1) is provided with an installation groove (11). The modular insulation unit (2) is inserted into the mounting slot (11) and the modular insulation unit (2) includes a metal shell (21), a ceramic fiber insulation layer (22) and a high-temperature resistant liner (23). The metal shell (21) is a box structure with an open top. The ceramic fiber insulation layer (22) is filled inside the metal shell (21). The high-temperature resistant liner (23) is fixedly installed at the bottom of the metal shell (21).

2. The modular ceramic fiber embedded steel cladding cover plate according to claim 1, characterized in that: The sealing assembly (3) includes an annular sealing groove (31), an elastic sealing gasket (32), and a clamping strip (33). The annular sealing groove (31) is opened at the bottom edge of the cover plate base (1). The elastic sealing gasket (32) is embedded in the annular sealing groove (31). The clamping strip (33) is fixed to the top of the annular sealing groove (31) by bolts (34), and the bottom of the elastic sealing gasket (32) extends out of the annular sealing groove (31).

3. The modular ceramic fiber embedded steel cladding cover plate according to claim 1, characterized in that: The connecting and fixing assembly (4) includes an ear plate (41), which is symmetrically fixed to the outer side wall of the cover plate base (1). The ear plate (41) has a through hole (42), and the locking bolt passes through the through hole (42) and is threadedly connected to the pre-set connecting seat on the side wall of the ladle. The locking bolt is locked by the cooperation of the nut and the locking bolt.

4. The modular ceramic fiber embedded steel cladding cover plate according to claim 1, characterized in that: A lifting handle (24) is fixedly installed on the top of the metal casing (21).

5. A modular ceramic fiber embedded steel cladding cover plate according to claim 1, characterized in that: Several sets of lifting lugs (12) are fixedly installed on the top of the cover plate base (1), and the lifting lugs (12) are symmetrically distributed on both sides of the cover plate base (1).

6. A modular ceramic fiber embedded steel cladding cover plate according to claim 1, characterized in that: The cover plate substrate (1) and the metal shell (21) are both made of high-temperature resistant stainless steel. The ceramic fiber insulation layer (22) is made of alumina-silicon dioxide composite ceramic fiber cotton. The high-temperature resistant liner (23) is made of silicon nitride combined with silicon carbide.

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