Lining for garbage incinerator

Abstract

The lining for the garbage incinerator comprises an incinerator wall body, and the inner side of the incinerator wall body comprises a steel plate, a heat preservation layer and a pouring layer which are sequentially arranged. The pouring layer is provided with a plurality of first scratch nails, each first scratch nail is of a Y-shaped structure, each Y-shaped structure comprises a first scratch nail straight plate part and a first scratch nail branch part, the first scratch nail branch parts are located on the pouring layer, the first scratch nail straight plate parts penetrate through the heat preservation layer and then are connected with the steel plate, and first connecting pieces are arranged below the first scratch nails; the first connecting piece penetrates through the pouring layer and the heat preservation layer and is connected with the steel plate, the position, located on the pouring layer, of the first connecting piece is connected with the end of the straight plate portion of the first grasping nail through a second connecting piece, and a second grasping nail is welded to the first connecting piece. According to the utility model, by changing the connection form of the scratch nail and the connecting piece, the thermal expansion deformation of the internal metal piece is reduced to the greatest extent, so that the risk that the refractory lining structure is damaged and falls off due to the thermal expansion extrusion of the metal piece is reduced.

Description

Technical Field

[0001] The utility model relates to the field of waste incineration, in particular to a lining for a waste incinerator. Background Art

[0002] Waste incineration is a common waste treatment method, which is widely used in municipal domestic waste and industrial waste. During the incineration process, the waste will release a large amount of heat, acidic gases and other corrosive substances, which usually have high requirements for the structure and materials of the waste incinerator. At the same time, the expansion joints at the outlet of the incinerator generally have problems of short service life and frequent maintenance, causing more unscheduled shutdowns of the furnace and reducing the operating efficiency of the boiler. A reasonable expansion joint structure can absorb and relieve the stress caused by thermal expansion and maintain the stability of the operation of the incinerator.

[0003] A stud structure for fixing refractory materials for a boiler disclosed in CN103453546 includes a head structure and a tail structure. The upper part of the tail structure protrudes outward, the head structure is an outward flared structure with an angle, the lower part of the tail structure is provided with an outward protruding hook, and the outward protruding hook hooks the center lower bending position of the outward flared structure with an angle and then is welded and connected, which enables the tail structure to hook the head structure and then be welded and connected, so that the connection between the stud head and the tail is reliable. Although this structure can prevent the refractory materials from falling off to a certain extent and improve the safety and reliability of the boiler operation. However, this stud structure may still fail in a high-temperature and highly corrosive environment, and the reliability of the expansion joint structure needs to be further improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a lining for a waste incinerator.

[0005] The innovation point of the utility model is to change the arrangement form of the connecting piece and the stud, and minimize the thermal expansion deformation of the internal metal parts to the greatest extent, thereby reducing the risk of the refractory lining structure being damaged and falling off due to the extrusion of the metal parts caused by thermal expansion.

[0006] To achieve the above-mentioned utility model purpose, the technical solution of the present utility model is as follows: A lining for a waste incinerator, including an incinerator wall body, the inner side of the incinerator wall body includes a steel plate, a thermal insulation layer, and a casting layer arranged in sequence; several first grab nails are provided on the casting layer, the first grab nails are in a Y-shaped structure, the Y-shaped structure includes a first grab nail straight plate part and a first grab nail bifurcated part, the first grab nail bifurcated part is located in the casting layer, the first grab nail straight plate part passes through the thermal insulation layer and is connected to the steel plate, a first connecting piece is provided below the first grab nail, the first connecting piece passes through the casting layer and the thermal insulation layer and is connected to the steel plate, the first connecting piece is connected to the end of the straight plate part through a second connecting piece at the casting layer, and a second grab nail is welded on the first connecting piece. The multi-point connection method between the grab nails and the connecting pieces ensures the tight combination between the layers and enhances the overall stability of the incinerator.

[0007] Furthermore, a high-aluminum alumina fiber cotton board is provided between the steel plate and the thermal insulation layer, the material of the casting layer is corundum-mullite wear-resistant casting material, and the material of the thermal insulation layer is lightweight thermal insulation casting material. By adding a high-aluminum alumina fiber cotton board between the steel plate and the thermal insulation layer, the service life of the incinerator is extended; selecting corundum-mullite wear-resistant casting material and lightweight thermal insulation casting material, due to their high hardness and high-temperature resistance performance, they can provide excellent thermal insulation effect while reducing the weight of the overall structure.

[0008] Furthermore, a V-shaped round steel grab nail is welded on the second grab nail, and the material of the V-shaped round steel grab nail is 06Cr25Ni20. By welding the V-shaped round steel grab nail, additional mechanical grasping force is provided, enhancing the anchoring effect of the second grab nail; the V-shaped round steel grab nail has high-temperature resistance and corrosion resistance properties, ensuring durability in a harsh environment.

[0009] Furthermore, the first grab nail and the first connecting piece are welded and fixed through the second connecting piece. The welding and fixing method ensures the stability of the connection between components, enabling them to withstand high-intensity loads and preventing loosening and falling off.

[0010] Furthermore, the horizontal arrangement spacing of the second grab nails is 200 mm, the second grab nails are in a Y-shaped structure, and the Y-shaped structure includes a second grab nail straight plate part and a second grab nail bifurcated part. By setting a reasonable spacing, uniform support is provided, avoiding local stress concentration and extending the service life of the overall structure of the incinerator.

[0011] Furthermore, the materials of the first grab nail and the second grab nail are 0Cr25Ni20, and the materials of the first connecting piece and the second connecting piece are 06Cr25Ni20. The selected materials have good high-temperature resistance and corrosion resistance properties, ensuring the stability of each component in a long-term high-temperature corrosion environment.

[0012] Furthermore, a 2-mm-thick bituminous paint layer is coated on the surfaces of the parts of the first connecting piece, the second connecting piece, the first grab nail, and the second grab nail that are embedded in the casting layer. The coating provides additional protection against oxidation and corrosion, enhancing the durability of the expansion joint structure.

[0013] Furthermore, the V-shaped round steel grab nail is perpendicularly welded to the straight plate part of the second grab nail, and the opening of the V-shaped round steel grab nail faces the casting layer. By perpendicularly welding the V-shaped round steel grab nail to the straight plate part of the second grab nail, the connection stability between the metal parts of the expansion joint and the casting layer is enhanced, and the stress can be better dispersed.

[0014] Furthermore, the tail of the first connecting piece and the straight plate part of the second grab nail are perpendicularly welded and fixed. By welding and fixing the tail of the first connecting piece and the straight plate part of the second grab nail, the load is evenly distributed, improving the overall strength and durability of the inner lining of the incinerator.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, through the multi-point connection method between the grab nails and the connecting pieces, the tight combination between layers is ensured, preventing breakage under high-temperature and high-stress environments; the V-shaped round steel grab nail is perpendicularly welded to the second grab nail, providing additional mechanical gripping force and enhancing the anchoring effect of the grab nails.

[0017] 2. In the present utility model, high-performance materials such as high-aluminum aluminosilicate fiber cotton board, corundum-mullite wear-resistant casting material, and lightweight heat-insulating casting material are used in the inner lining of the incinerator, reducing the weight of the overall structure and improving the service life and performance of the incinerator; the metal parts made of high-temperature and corrosion-resistant materials ensure the durability of each component in the long-term high-temperature corrosion environment.

[0018] 3. In the present utility model, the welding and fixing method ensures that the connection between components can withstand the load under high-temperature and high-stress environments, preventing loosening and falling off; a bituminous paint layer is coated on the surface of the metal parts in the casting layer, providing additional protection and enhancing the durability of the expansion joint structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the furnace wall of the present utility model.

[0020] Figure 2 It is a schematic structural diagram of the metal parts of the present utility model.

[0021] Figure 3 It is a schematic welding diagram of the V-shaped round steel grab nail of the present utility model.

[0022] In the figure: 1. Steel plate; 2. Thermal insulation layer; 3. Casting layer; 4. First nail; 41. Straight part of the first nail; 42. Forked part of the first nail; 5. First connecting piece; 6. Second connecting piece; 7. Second nail; 71. Straight part of the second nail; 72. Forked part of the second nail; 8. High-aluminum alumina fiber cotton board; 9. V-shaped round steel nail. Specific implementation mode

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] Embodiment 1: As Figure 1 , 2 , 3 shows a lining for a waste incinerator, including an incinerator wall body. The inner side of the incinerator wall body includes a steel plate 1, a thermal insulation layer 2, and a casting layer 3 arranged in sequence; several first nails 4 are provided in the casting layer 3. The first nail 4 is a Y-shaped structure. The Y-shaped structure includes a straight part 41 of the first nail and a forked part 42 of the first nail. The forked part 42 of the first nail is located in the casting layer 3. The straight part 41 of the first nail passes through the thermal insulation layer 2 and is connected to the steel plate 1. A part of the first nail is arranged in the casting layer 3, and a part is arranged in the thermal insulation layer 2, enhancing the strength between the thermal insulation layer 2 and the casting layer 3 and enhancing the overall stability; a first connecting piece 5 is provided below the first nail 4. The first connecting piece 5 passes through the casting layer 3 and the thermal insulation layer 2 and is connected to the steel plate 1. The first connecting piece 5 is welded to the end of the straight part 41 through a second connecting piece 6 at the casting layer 3. A second nail 7 is welded to the first connecting piece 5. The second nail 7 is a Y-shaped structure. The Y-shaped structure includes a straight part 71 of the second nail and a forked part 72 of the second nail; a high-aluminum alumina fiber cotton board 8 is provided between the steel plate 1 and the thermal insulation layer 2; the material of the casting layer 3 is corundum mullite wear-resistant casting material, and the material of the thermal insulation layer 2 is lightweight thermal insulation casting material.

[0025] In this embodiment, an expansion joint structure with two or more rows of grab nails and connectors superimposed is designed, and then casting is carried out, which can effectively solve the problem that the refractory lining structure is damaged due to the thermal expansion and extrusion of metal parts; a 2-mm-thick bituminous paint layer is coated on the part of the surface of the first connector 5, the second connector 6, the first grab nail 4, and the second grab nail 7 buried in the casting layer 3, which can increase the durability of the expansion joint structure; the tail of the straight plate part 71 of the first connector 5 and the second grab nail is vertically welded and fixed, which can make the load distribution of the expansion joint metal parts uniform and improve the overall strength and durability of the inner lining of the incinerator; a V-shaped round steel grab nail 9 is welded to the second grab nail 7, which can strengthen the anchoring effect of the second grab nail 7; the V-shaped round steel grab nail 9 is vertically welded to the straight plate part 71 of the second grab nail 7, and the opening of the V-shaped round steel grab nail 9 faces the casting layer 3, which enhances the connection stability between the expansion joint metal parts and the casting layer and can better disperse stress; the materials of the first grab nail 4 and the second grab nail 7 are selected as 0Cr25Ni20, and the materials of the first connector 5 and the second connector 6 are selected as 06Cr25Ni20. The selected materials have good high-temperature resistance and corrosion resistance, ensuring the stability of each component in the long-term high-temperature corrosion environment.

[0026] In summary, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

Claims

1. A lining for a garbage incinerator, comprising an incinerator wall, characterized in that: The inner side of the incinerator wall includes a steel plate, an insulation layer, and a casting layer arranged in sequence; the casting layer is provided with a plurality of No. 1 grabbing nails, and the No. 1 grabbing nail is a Y-shaped structure, and the Y-shaped structure includes a No. 1 grabbing nail straight plate portion and a No. 1 grabbing nail fork portion, and the No. 1 grabbing nail fork portion is located in the casting layer, and the No. 1 grabbing nail straight plate portion passes through the insulation layer and is connected to the steel plate, and a No. 1 connecting piece is provided under the No. 1 grabbing nail, and the No. 1 connecting piece passes through the casting layer and the insulation layer and is connected to the steel plate, and the No. 1 connecting piece is located at the casting layer and is connected to the end of the straight plate portion through a No. 2 connecting piece, and the No. 2 grabbing nail is welded on the No. 1 connecting piece.

2. The lining for a waste incinerator according to claim 1, characterized in that A high-alumina aluminum silicate fiber wool board is arranged between the steel plate and the insulation layer, the casting layer material is a corundum mullite wear-resistant casting material, and the insulation layer material is a lightweight insulation casting material.

3. The lining for a waste incinerator according to claim 1, characterized in that: A V-shaped round steel grabbing nail is welded on the No. 2 grabbing nail, and the material of the V-shaped round steel grabbing nail is 06Cr25Ni20.

4. The lining for a waste incinerator according to claim 1, characterized in that: The No. 1 grabbing nail and the No. 1 connecting piece are welded and fixed by the No. 2 connecting piece.

5. The lining for a waste incinerator according to claim 1, characterized in that: The lateral arrangement spacing of the No. 2 grabbing nail is 200 mm, and the No. 2 grabbing nail is a Y-shaped structure, and the Y-shaped structure includes a No. 2 grabbing nail straight plate portion and a No. 2 grabbing nail fork portion.

6. The lining for a waste incinerator according to claim 1, characterized in that: The material of the No. 1 grab nail and the No. 2 grab nail is 0Cr25Ni20, and the material of the No. 1 connecting piece and the No. 2 connecting piece is 06Cr25Ni20.

7. The lining for a waste incinerator according to claim 1, characterized in that: The surfaces of the parts of the No. 1 connecting piece, the No. 2 connecting piece, the No. 1 grabbing nail and the No. 2 grabbing nail embedded in the pouring layer are coated with a 2mm thick asphalt paint layer.

8. The lining for a waste incinerator according to claim 3, characterized in that: The V-shaped round steel grab nail is vertically welded to the straight plate portion of the No. 2 grab nail, and the opening of the V-shaped round steel grab nail faces the casting layer.

9. The lining for a waste incinerator according to claim 1, characterized in that: The No. 1 connecting piece and the tail of the No. 2 nail grabbing straight plate portion are fixed by vertical welding.

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