A fire-resistant daubing structure

Abstract

The utility model relates to fire -resistant daub lining structure technical field, concretely relates to a fire -resistant daub daub structure, include: fire -resistant fibre product, stud, connecting piece, tortoise shell net, fire -resistant daub, fire -resistant fibre product is laid as the heat preservation layer in the high temperature equipment inner surface, the stud is fixed in the high temperature equipment inner surface, and is connected with the connecting piece through fire -resistant fibre product, the tortoise shell net is fixed on the connecting piece, fire -resistant daub, daub is fixed on the connecting piece on the tortoise shell net, forms the working layer. The utility model has the beneficial effects that: the application passes through the stud and connects the connecting piece through fire -resistant fibre product, and the connecting piece fixes the integrated lining structure of tortoise shell net and fire -resistant daub, realizes the reliable positioning and firm connection of fibre product, daub, strengthens the anti -falling, anti -cracking ability, and the overall stability is optimized, and the combination of fire -resistant fibre product and fire -resistant daub realizes good heat preservation effect.

Description

Technical Field

[0001] This utility model relates to the technical field of refractory coating lining structure, specifically to a refractory coating structure. Background Technology

[0002] Refractory coatings, as an important branch of monolithic refractory materials, possess excellent properties such as high temperature resistance, wear resistance, and corrosion resistance. They are easy to apply, effectively shortening construction time, and are widely used for lining protection and sealing of high-temperature industrial equipment in metallurgy and other fields. However, existing refractory coating structures mostly use anchor nails for fixation, which easily leads to problems such as coating detachment and cracking in practical applications. Especially when adding insulation layers such as refractory fiber felts and fiber blankets to improve thermal insulation, existing structures struggle to effectively fix the fiber products, resulting in difficult construction, poor structural stability, and impacting overall service life and insulation performance.

[0003] Therefore, there is an urgent need for a new type of refractory coating structure that can reliably fix refractory fiber products and refractory coatings, prevent them from falling off and cracking during construction and use, and improve overall thermal insulation performance and structural durability. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a refractory coating structure, thereby achieving the objective of resolving the issues raised in the background art.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: a refractory coating structure, comprising studs, connecting plates, a hexagonal mesh, refractory fiber products, and refractory coating. The refractory fiber products serve as an insulation layer laid on the inner surface of high-temperature equipment; the studs are fixed to the inner surface of the high-temperature equipment and pass through the refractory fiber products to connect with the connecting plates; the hexagonal mesh is fixed on the connecting plates; the refractory coating is applied to the hexagonal mesh and fixed on the connecting plates to form a working layer.

[0006] Furthermore, this application also proposes that the height of the stud is not less than the sum of the thickness of the refractory fiber product and the thickness of the connecting piece; the stud is connected to the inner surface of the high-temperature equipment by welding or fixing with nuts.

[0007] Furthermore, this application also proposes that the connecting piece is made of steel plate, has an internal screw hole in the center, and is circular, square, or polygonal in shape.

[0008] Furthermore, this application also proposes that the hexagonal wire mesh be welded onto the connecting piece.

[0009] Furthermore, this application also proposes that the refractory fiber product is one of refractory fiber board, refractory fiber felt or refractory fiber blanket.

[0010] Furthermore, this application also proposes that the thickness of the refractory fiber product is 20 mm to 100 mm.

[0011] Furthermore, this application also proposes that the studs are distributed at equal intervals or in a quincunx pattern on the inner surface of the high-temperature equipment, with a stud spacing of 150mm to 250mm.

[0012] Furthermore, this application also proposes that the studs, connecting pieces, and hexagonal wire mesh be made of one of Q235, 1Cr18Ni9Ti, or Cr25Ni20.

[0013] Furthermore, this application also proposes that the refractory coating material is a heavy coating material or a light coating material, and the material is one of mullite, corundum, or corundum-mullite composite material.

[0014] The beneficial effects of this utility model embodiment are as follows: This application uses studs to pass through refractory fiber products to fix connecting plates. The connecting plates fix the hexagonal mesh and refractory coating to form an integrated inner lining structure, which realizes reliable positioning and stable connection of fiber products and coating, enhances the resistance to falling off and cracking, optimizes the overall stability, and achieves good thermal insulation effect through the combination of refractory fiber products and refractory coating. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the tortoise shell mesh of this utility model.

[0016] In the diagram: 1. Stud; 2. Connecting piece; 3. Hexagonal wire mesh; 4. Refractory fiber product; 5. Refractory coating; 6. Inner surface of high-temperature equipment. Detailed Implementation

[0017] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0018] See Figures 1 to 2 This utility model discloses a refractory coating structure, including a refractory fiber product 4, which is laid as an insulation layer on the inner surface 6 of a high-temperature equipment; a stud 1, which is fixed to the inner surface 6 of the high-temperature equipment and passes through the refractory fiber product 4 and is connected to a connecting piece 2; a hexagonal mesh 3, which is fixed to the connecting piece 2; and a refractory coating 5, which is applied to the hexagonal mesh 3 and fixed to the surface of the refractory fiber product 4 to form a working layer.

[0019] Refractory fiber products 4 can be understood as a material layer used to provide thermal insulation, which can be achieved through materials such as refractory fiberboard, refractory fiber felt, or refractory fiber blanket. Specifically, the selection of these materials is mainly based on their stability and thermal insulation performance in high-temperature environments. For example, refractory fiber products made of ceramic fibers can meet the basic requirements of high-temperature equipment for insulation layers.

[0020] The stud 1 can be fixedly connected to the inner surface 6 of the high-temperature equipment in various ways, such as by welding or by using a nut. The main purpose of this fixing method is to ensure that the stud 1 can maintain a stable connection in a high-temperature environment, thereby providing a supporting foundation for subsequent structures.

[0021] The connecting piece 2 can be designed in various shapes and materials, such as stainless steel or other high-temperature resistant alloys, and its shape can be square, round, oval or polygonal. The main purpose of this design is to adapt to the needs of different construction environments, while ensuring that it can firmly fix the hexagonal wire mesh 3.

[0022] The hexagonal wire mesh 3 can be fixed using various technical means, such as welding, snap-fit ​​structures, or riveting, to the connecting piece 2. The main purpose of this fixing method is to ensure that the hexagonal wire mesh 3 remains stable during construction, thereby providing reliable support for the adhesion of the refractory coating 5.

[0023] By using the design of studs 1 passing through refractory fiber products 4 and fixing connecting pieces 2, reliable fixation of refractory fiber products 4 is achieved, avoiding displacement and loosening under high temperature or vibration environments. At the same time, the hexagonal mesh 3 forms a rigid anchoring system with studs 1 through connecting pieces 2, significantly improving the adhesion stability of refractory coating 5 and solving the problems of easy peeling and cracking of coating in existing technologies, thereby improving the construction convenience and reliability of the overall structure.

[0024] The working principle of this embodiment is as follows: Refractory fiber product 4 is laid as an insulation layer on the inner surface 6 of high-temperature equipment, providing basic thermal insulation. Stud 1 is fixed to the inner surface 6 of the high-temperature equipment and passes through the refractory fiber product 4, connected to a connecting piece 2. Through this penetrating fixing mechanism, the refractory fiber product 4 is tightly fixed between the inner surface 6 of the high-temperature equipment and the connecting piece 2, preventing displacement or loosening under high temperature or vibration conditions, thus solving the problem of the refractory fiber product 4 being difficult to fix effectively. The connecting piece 2, as a key transition component, is fixed to the end of the stud 1. Its design ensures that the hexagonal mesh 3 can be installed stably without directly acting on the refractory fiber product 4, avoiding damage to the fiber structure and improving support reliability. After the hexagonal mesh 3 is fixed to the connecting piece 2, refractory coating 5 is applied to the hexagonal mesh 3 and fixed to the surface of the refractory fiber product 4, forming a working layer. Because the hexagonal mesh 3 forms a rigid anchoring system with the stud 1 through the connecting piece 2, the refractory coating 5 can be evenly adhered and withstand thermal stress, significantly reducing the risk of cracking and detachment. Therefore, this technical solution achieves synergistic stability between the insulation layer and the working layer, improves the overall structure's durability and ease of construction, and effectively solves the problems of coating material peeling off, cracking, and construction difficulty caused by the difficulty in effectively fixing refractory fiber products when adding them to high-temperature equipment.

[0025] This application further proposes that the height of the stud 1 is not less than the sum of the thickness of the refractory fiber product 4 and the thickness of the connecting piece 2; the stud 1 is connected to the inner surface 6 of the high-temperature equipment by welding or fixing with nuts.

[0026] The height of stud 1 refers to its length extending from the inner surface 6 of the high-temperature equipment, which must be at least equal to the sum of the thickness of the refractory fiber product 4 and the thickness of the connecting piece 2. This design ensures that stud 1 can completely penetrate the refractory fiber product 4 and provide sufficient extension length to securely install the connecting piece 2. In practical applications, stud 1 can be adjusted in length to accommodate refractory fiber products 4 and connecting pieces 2 of different thicknesses, thus achieving a flexible structural design. Furthermore, the connection between stud 1 and the inner surface 6 of the high-temperature equipment can be achieved through welding or nut fixing. Welding utilizes metallurgical bonding to form a permanent, high-strength anchor, while nut fixing provides an adjustable and reliable connection through mechanical locking. These two methods can be flexibly selected based on on-site construction conditions.

[0027] Through the above technical solution, this application achieves reliable fixing of refractory fiber product 4 and connecting piece 2, effectively overcoming the problem of reduced structural stability caused by insufficient stud height or unclear connection method in the prior art, and significantly improving the overall thermal insulation performance and structural durability.

[0028] This application further proposes that the connecting piece 2 is made of steel plate, with an internal screw hole in the center, and is circular, square or polygonal in shape.

[0029] The connecting piece 2 is made of steel plate, which has high strength and good heat resistance, maintaining structural stability in high-temperature environments. In practical applications, the steel plate can be manufactured through hot rolling or cold rolling processes, and its thickness can be adjusted according to load-bearing requirements. The internal threaded hole refers to a through hole with internal threads located at the center of the connecting piece 2, which can be formed by machining to achieve a precise fit and secure connection with the stud 1. The shape can be designed in various ways, including square, round, elliptical, or polygonal, and combined with the machinability of the steel plate, the connecting piece 2 can flexibly adapt to equipment surfaces with different curvatures.

[0030] The high strength of the steel plate provides stable support for the hexagonal wire mesh 3, preventing load-bearing failure due to material weakness. The centrally located internal screw hole, based on the rigidity of the steel plate, ensures a tight fixation with the studs 1, effectively preventing loosening or displacement caused by vibration or thermal expansion during construction or use. The circular shape is suitable for curved surface installation to reduce stress concentration, while square or polygonal shapes facilitate precise positioning in planar layouts, thereby improving the overall fit and stability of the structure. This design not only solves the problems of unclear connecting plate material and non-standard shapes, but also significantly improves construction efficiency and overall stability through a standardized fixing structure, ultimately reducing the risk of refractory coating 5 detachment and optimizing the construction process.

[0031] Through the above technical solution, the connecting piece 2, the stud 1, and the hexagonal mesh 3 together form a stable fixing system, forming a reliable support structure on the inner surface 6 of the high-temperature equipment, ensuring the stable fixing of the refractory fiber product 4 and the refractory coating 5, and effectively preventing the coating from falling off and the structure from cracking.

[0032] This application further proposes that the tortoise shell mesh 3 be welded onto the connecting piece 2.

[0033] The hexagonal mesh 3 refers to a metal component with a mesh structure, which can be made of stainless steel or high-temperature alloy steel. Its purpose is to provide support for the refractory coating 5 and enhance the overall stability of the coating layer. The hexagonal mesh 3 is directly fixed to the connecting piece 2 through welding, forming a continuous and seamless metallurgical bond. This connection method not only eliminates the gaps and loosening risks that may exist in traditional bolt or snap-fit ​​connections, but also significantly improves the overall structure's resistance to thermal expansion stress and vibration. During the operation of high-temperature equipment, the hexagonal mesh 3, as the supporting framework of the refractory coating 5, maintains a stable position, effectively preventing cracking of the coating caused by local displacement. Furthermore, since no additional fasteners are required, the construction steps are simplified, installation errors are reduced, and the refractory coating 5 can be evenly adhered to the surface of the hexagonal mesh 3, further enhancing the overall adhesion and durability of the working layer.

[0034] This application further proposes that the refractory fiber product 4 is one of refractory fiber board, refractory fiber felt or refractory fiber blanket.

[0035] Refractory fiber products 4 refer to the materials used for the insulation layer on the inner surface 6 of high-temperature equipment. They can be made of refractory fiberboard, refractory fiber felt, or refractory fiber blanket. In practical applications, refractory fiberboard has high rigidity and can achieve a smooth fit with the inner surface 6 of high-temperature equipment, reducing gaps caused by material bending; refractory fiber felt, based on its soft and fluffy texture, can adapt to the slight undulations of the equipment surface during the fixing of studs 1, enhancing the friction with the connecting pieces 2; refractory fiber blanket, utilizing the toughness of its woven structure, maintains overall continuity when laid on complex curved surfaces.

[0036] This application further proposes that the thickness of the refractory fiber article 4 is 20 mm to 100 mm.

[0037] In practical applications, when the thickness is less than 20mm, the insulation layer is difficult to form a sufficient heat insulation barrier, resulting in increased heat loss and failing to meet the insulation requirements of high-temperature equipment; while when the thickness exceeds 100mm, the material is too loose or difficult to compact, which not only increases the difficulty of construction, but also easily causes insecure fixing, leading to stress concentration between the refractory coating 5 and the hexagonal mesh 3, thereby exacerbating the risk of detachment and cracking.

[0038] By limiting the thickness of the refractory fiber product 4 to within the range of 20mm to 100mm, the construction and stability problems caused by unreasonable insulation layer thickness are effectively solved. This specific thickness range balances thermal insulation efficiency and structural stability, enabling the refractory fiber product 4 to be reliably laid and fixed to the inner surface 6 of high-temperature equipment, laying the foundation for the subsequent construction of the hexagonal mesh 3 and coating material 5.

[0039] This application further proposes that the studs 1 are distributed at equal intervals or in a quincunx pattern on the inner surface 6 of the high-temperature equipment, with a stud spacing of 150mm to 250mm.

[0040] Equal-distance distribution refers to the studs 1 being arranged in a regular grid pattern on the inner surface 6 of the high-temperature equipment. This can be achieved using rectangular or square grids, aiming to ensure that all areas of the refractory coating 5 bear uniform support force and avoid cracking due to stress concentration. A staggered arrangement refers to the studs 1 being arranged in a staggered pattern, achieved by offsetting adjacent rows. This aims to enhance the fixing rigidity of complex geometric areas and reduce displacement caused by thermal expansion or vibration. The stud spacing is limited to 150mm to 250mm, a range optimized based on the material properties of the refractory coating 5 and engineering practices, aiming to balance construction efficiency and structural reliability.

[0041] This application further proposes that the stud 1, connecting piece 2 and hexagonal mesh 3 be made of one of Q235, 1Cr18Ni9Ti or Cr25Ni20.

[0042] Stud 1 can be made of Q235 steel to meet the strength requirements in medium-temperature environments, or 1Cr18Ni9Ti stainless steel to enhance corrosion resistance, or Cr25Ni20 high-temperature alloy to adapt to extreme high-temperature conditions. The purpose is to ensure that stud 1 maintains sufficient mechanical strength and oxidation resistance during long-term high-temperature operation, avoiding structural loosening or breakage due to material failure.

[0043] The connecting piece 2 can be understood as a fixing component that works in conjunction with the stud 1. Its material must possess good thermal stability and corrosion resistance. In practical applications, the connecting piece 2 can be made of Q235 to provide basic strength, or 1Cr18Ni9Ti to resist high-temperature corrosion, or Cr25Ni20 to cope with extreme thermal stress environments. Its purpose is to prevent cracking of the weld joint due to differences in thermal expansion, thereby ensuring a firm connection between the connecting piece 2 and the hexagonal mesh 3.

[0044] The hexagonal mesh 3 refers to the core component used to enhance the adhesion of the refractory coating 5. Its material must possess matching high-temperature strength and coefficient of thermal expansion. The hexagonal mesh 3 can be made of Q235 to achieve uniform stress distribution under normal working conditions, or 1Cr18Ni9Ti to improve thermal shock resistance, or Cr25Ni20 to maintain structural integrity at extremely high temperatures. Its purpose is to effectively disperse the thermal stress during the curing and use of the coating, avoiding peeling caused by localized stress concentration.

[0045] This application further proposes that the refractory coating material 5 is a heavy coating material or a light coating material, and the material is one of mullite, corundum, or corundum-mullite composite material.

[0046] Heavy-duty refractory coatings refer to refractory materials with high density and mechanical strength, which can be achieved by adjusting the particle size distribution and binder ratio. Light-duty refractory coatings, on the other hand, refer to refractory materials with low density and thermal conductivity, which can be prepared by introducing porous aggregates or lightweight fillers. These two types of coatings can be selectively adapted to the actual needs of different areas of the equipment, thereby optimizing the thermal insulation effect while meeting mechanical performance requirements.

[0047] Mullite-based materials refer to refractory materials with mullite as the main crystalline phase, whose crystal structure endows them with excellent thermal shock resistance. Corundum-based materials refer to refractory materials with corundum as the main crystalline phase, which provide excellent wear resistance and corrosion resistance due to their high hardness and dense structure. Corundum-mullite composite materials are composite materials that combine the characteristics of both, achieving complementary performance through a reasonable ratio. The selection of these materials ensures the coordination of thermal expansion behavior with the metal wire mesh 3 and the fiber insulation layer.

[0048] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0049] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0051] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A refractory coating structure, comprising studs (1), connecting pieces (2), a hexagonal mesh (3), refractory fiber products (4), and refractory coating (5); characterized in that: Refractory fiber products (4) are laid as insulation layers on the inner surface (6) of high-temperature equipment; studs (1) are fixed to the inner surface (6) of high-temperature equipment and pass through refractory fiber products (4) and connected to connecting pieces (2); hexagonal mesh (3) is fixed on connecting pieces (2); refractory coating material (5) is applied to hexagonal mesh (3) to form a working layer.

2. A fireproofing daub structure according to claim 1, wherein The height of the stud (1) is not less than the sum of the thickness of the refractory fiber product (4) and the thickness of the connecting piece (2); the stud (1) is connected to the inner surface (6) of the high-temperature equipment by welding or fixing with nuts.

3. The fireproofing daub structure of claim 1, wherein, The connecting piece (2) is made of steel plate, with an internal screw hole in the center, and is square, round or polygonal in shape.

4. The fireproofing daub structure of claim 1, wherein, The tortoise shell mesh (3) is welded onto the connecting piece (2).

5. The fireproofing daub structure of claim 1, wherein, The refractory fiber product (4) is one of refractory fiberboard, refractory fiber felt or refractory fiber blanket.

6. A fireproofing daub structure according to claim 1 or 5, characterised in that The thickness of the refractory fiber product (4) is 20-100 mm.

7. The fireproofing daub structure of claim 1, wherein, The studs (1) are distributed at equal intervals or in a quincunx pattern on the inner surface (6) of the high-temperature equipment, with a stud spacing of 150-250 mm.

8. The fireproofing daub structure of claim 1, wherein, The stud (1), connecting piece (2) and turtle shell mesh (3) are made of one of Q235, 1Cr18Ni9Ti or Cr25Ni20.

9. The fireproofing daub structure of claim 1, wherein, The refractory coating material (5) is a heavy coating material or a light coating material, and the material is one of mullite, corundum or corundum-mullite composite material.

Images