Reinforced anti-corrosion layer structure of water-cooled wall tube of waste incinerator

Abstract

The utility model discloses a kind of reinforced garbage incinerator water-cooled wall pipe anticorrosive layer structure, including water-cooled wall pipe, fin, peg, grab nail, press-down component and refractory layer, a plurality of water-cooled wall pipe interval arrangement;Fin is located between the adjacent water-cooled wall pipe;The bottom of peg is equipped with mounting plate, and mounting plate is equipped on fin;Grab nail is M-shaped structure, and grab nail is slidably equipped on peg;Press-down component is installed on peg, and press-down component is used to press down grab nail, so that grab nail and adjacent water-cooled wall pipe abut;Refractory layer is covered in the fire side of water-cooled wall pipe, wherein the peg, grab nail and press-down component are located in refractory layer.The reinforced garbage incinerator water-cooled wall pipe anticorrosive layer structure provided by the utility model provides support system for refractory layer by mechanical assembly mode, significantly shortens construction period, reduces the dependency on worker skill at the same time, and guarantees the installation consistency of large-scale layout.

Description

Technical Field

[0001] This utility model relates to the field of corrosion protection technology for water-cooled wall tubes in waste incinerators, and in particular to a structure for reinforcing the corrosion protection layer of water-cooled wall tubes in waste incinerators. Background Technology

[0002] The operating environment of waste incinerators is extremely harsh, facing high temperatures, strong corrosion, and the impact of molten ash. In this environment, the water-cooled walls, as critical heating surfaces, require paramount corrosion protection. Currently, the mainstream corrosion protection measure involves applying a robust refractory layer to the fire-facing side of the water-cooled wall tubes and fins. This corrosion-resistant layer structure typically consists of spaced-apart boiler water-cooled wall tubes, metal fins welded between adjacent tubes, and numerous anchor bolts (or securing studs) welded to the surfaces of the tubes and fins. Refractory material (such as refractory castables or plastics) tightly covers and encapsulates these components, particularly through the embedded anchor bolts forming a reliable mechanical engagement, thus firmly anchoring the refractory layer to the water-cooled wall substrate. This refractory layer acts as a physical barrier, effectively isolating the water-cooled wall from high-temperature flames, acidic gases (such as HCl and SOx), the erosion and scouring of molten ash, and the abrasion of solid materials, significantly extending the safe service life of the water-cooled wall heating surface tubes.

[0003] However, in existing technologies, the anchor bolts supporting and reinforcing the refractory layer mainly rely on manual welding to each water-cooled wall tube and each fin. This point-by-point welding method is extremely time-consuming and significantly prolongs the construction period. Furthermore, the large volume and intensive welding work not only greatly increases labor costs, but the welding quality (such as weld strength, anchor bolt verticality, and distribution uniformity) is also highly susceptible to the skill level of the operators, leading to poor welding consistency and low work efficiency.

[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a reinforced anti-corrosion layer structure for water-cooled wall tubes of waste incinerators, aiming to solve the technical problems of low construction efficiency and high labor costs caused by manual welding and nailing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A structure for reinforcing the corrosion protection layer of water-cooled wall tubes in a waste incinerator includes:

[0008] Several water-cooled wall tubes arranged at intervals;

[0009] Fins disposed between adjacent water-cooled wall tubes;

[0010] The pin has a mounting plate at its bottom, which is located on the fin.

[0011] The M-shaped catch pin is slidably mounted on the pin.

[0012] The pressing assembly, mounted on the pin, is used to press down the clamping pin so that the clamping pin abuts against the adjacent water-cooled wall tube;

[0013] And a fire-resistant layer covering the fire-facing side of the water-cooled wall tubes, wherein the pins, catch pins and pressing assemblies are all located within the fire-resistant layer.

[0014] Furthermore, the pressing assembly includes a first sleeve sleeved on the pin and a first nut screwed to the pin; the two ends of the first sleeve abut against the middle of the first nut and the pin respectively.

[0015] Furthermore, the pressing assembly includes a pressure strip slidably connected to the pin and a second nut screwed to the pin; the upper and lower surfaces of the pressure strip abut against the top of the second nut and the pin, respectively.

[0016] Furthermore, the pressure strip is provided with limiting strips on both sides along its length, and the top of the grab pin is located between the two limiting strips.

[0017] Furthermore, the middle part of the pin is provided with a first horizontal section extending horizontally, and a waist-shaped hole is opened on the first horizontal section. The length direction of the waist-shaped hole is perpendicular to the axis of the water-cooled wall tube, and the pin passes through the waist-shaped hole.

[0018] Furthermore, the fin has a mounting hole, and the mounting plate has a threaded section that passes through the mounting hole. A third nut is screwed onto the threaded section to press the mounting plate onto the fin.

[0019] Furthermore, it also includes a reinforcing nail, the end of which has a radially extending through hole, and one end of the reinforcing nail has two parallel and spaced limiting parts, as well as a sliding part between the two limiting parts; the sliding part passes through the through hole, and the two limiting parts are clamped on both sides of the end of the nail.

[0020] Furthermore, the pins on two adjacent fins are staggered along the length of the water-cooled wall tube.

[0021] Furthermore, the refractory layer is provided with several combustible strips, which form expansion joints within the refractory layer after burning.

[0022] Beneficial effects:

[0023] This utility model provides a structure for reinforcing the anti-corrosion layer of water-cooled wall tubes in waste incinerators. A clamping component is used to install clamping pins on pins, with the lower surfaces of the clamping pins abutting against the water-cooled wall tubes on both sides. The M-shaped clamping pins span two water-cooled wall tubes, forming a suspended support, providing internal anchoring support for the subsequent pouring of the refractory layer and ensuring its stability. Furthermore, the assembly method provides a support system for the refractory layer, significantly shortening the construction cycle, reducing reliance on worker skills, and ensuring consistent installation across large-scale deployments. Attached Figure Description

[0024] Figure 1 The structure of the anti-corrosion layer for the water-cooled wall tubes of the waste incinerator provided by this utility model Figure 1 ;

[0025] Figure 2 Cross-sectional view of the anti-corrosion layer structure for the reinforced water-cooled wall tubes of the waste incinerator provided by this utility model. Figure 1 ;

[0026] Figure 3 Exploded view of the pressing component in the anti-corrosion layer structure of the water-cooled wall tube of the waste incinerator provided by this utility model;

[0027] Figure 4 A side view of the pressing component in the anti-corrosion layer structure of the water-cooled wall tube of the reinforced waste incinerator provided by this utility model;

[0028] Figure 5 The structure of the anti-corrosion layer for the water-cooled wall tubes of the waste incinerator provided by this utility model Figure 2 ;

[0029] Figure 6 Cross-sectional view of the anti-corrosion layer structure for the reinforced water-cooled wall tubes of the waste incinerator provided by this utility model. Figure 2 ;

[0030] Figure 7 The structural diagram of the retaining nail in the anti-corrosion layer structure of the water-cooled wall tube of the waste incinerator provided by this utility model;

[0031] Figure 8 This is a schematic diagram showing the installation of combustible strips in the anti-corrosion layer structure of the water-cooled wall tube of the waste incinerator provided by this utility model.

[0032] Figure 9 This is a cross-sectional view of the combustible strips in the anti-corrosion layer structure of the water-cooled wall tube of the waste incinerator provided by this utility model.

[0033] Reference numerals: 1. Water-cooled wall tube; 2. Fin; 21. Mounting hole; 22. Third nut; 3. Pin; 31. Mounting plate; 31. U-shaped notch; 311. Threaded section; 32. Claw pin; 4. First horizontal section; 41. Waist-shaped hole; 42. Through hole; 43. Second horizontal section; 44. Heightening section; 45. Downward pressing assembly; 5. First sleeve; 51. First nut; 52. Pressure strip; 53. Limiting strip; 531. Second sleeve; 532. Second nut; 54. Fire-resistant layer; 6. Reinforcing nail; 7. Limiting part; 71. Sliding part; 72. Combustible strip; 8. Detailed Implementation

[0034] This utility model provides a structure for reinforcing the anti-corrosion layer of water-cooled wall tubes in a waste incinerator. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0035] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0036] Please see Figures 1 to 9 As shown, this utility model provides a reinforced anti-corrosion layer structure for water-cooled wall tubes in a waste incinerator, comprising water-cooled wall tubes 1, fins 2, pins 3, clamping nails 4, a pressing assembly 5, and a refractory layer 6. Several water-cooled wall tubes 1 are arranged at intervals; fins 2 are disposed between adjacent water-cooled wall tubes 1; a mounting plate 31 is provided at the bottom of the pin 3, and the mounting plate 31 is disposed on the fin 2; the clamping nails 4 have an M-shaped structure and are slidably disposed on the pins 3; the pressing assembly 5 is installed on the pins 3 and is used to press down the clamping nails 4, causing the clamping nails 4 to abut against adjacent water-cooled wall tubes 1; the refractory layer 6 covers the fire-facing side of the water-cooled wall tubes 1, wherein the pins 3, clamping nails 4, and pressing assembly 5 are all located within the refractory layer 6.

[0037] Before assembly, the pins 3, clamping pins 4, and pressing components are pre-coated with anti-corrosion paint. During assembly, the fins 2 are first welded and fixed to the adjacent water-cooled wall tubes 1 to form a water-cooled wall substrate, and anti-corrosion paint is also applied to the surface of the water-cooled wall substrate. Then, the mounting plate 31 at the bottom of the pin 3 is fixed to the fire-facing side of the fin 2, so that the pin 3 is kept perpendicular to the fin 2. After the pin 3 is installed, the M-shaped clamping pins 4 are fitted onto the pins 3. At this time, the pressing components 5 installed on the pins 3 apply downward pressure to the clamping pins 4, forcing the lower surfaces of both ends of the clamping pins 4 to tightly abut against the outer wall of the adjacent water-cooled wall tube 1. In this state, the M-shaped clamping pins 4 span the two water-cooled wall tubes 1 and form a suspended support, providing internal anchoring support for the subsequent fire-resistant layer 6 covering the fire-facing side. This assembly method replaces traditional welding with mechanical pressing, significantly reducing construction steps and thus shortening the overall construction cycle of the water-cooled wall anti-corrosion layer.

[0038] In the above scheme, the M-shaped clamping stud 4, with its double-arched profile, forms two independent stress distribution contact points with the water-cooled wall tube 1 after assembly. In the alternative scheme, the clamping stud 4 is a V-shaped mechanism, and the V-shaped clamping stud 4 forms a single concentrated load transfer point with the water-cooled wall tube 1. The two structural forms have different effects on the anchoring effectiveness and thermal stress distribution pattern of the refractory layer 6. The specific structural selection depends on the system reliability requirements and the adaptability requirements of the operating conditions.

[0039] Preferably, the pin 3, the grab pin 4, and the pressing component 5 are all made of 310S stainless steel, which has a higher linear thermal expansion coefficient than the refractory castable (i.e., refractory layer 6) it wraps. When the waste incinerator is running, the equipment temperature rises, causing the metal parts to expand more than the refractory castable. At this time, the pin 3, the grab pin 4, and the pressing component 5 release stress through slight bending or elastic elongation, effectively buffering the expansion difference between them and the refractory castable, and avoiding cracking of the refractory layer 6 due to rigid compression.

[0040] It should be emphasized that refractory castables have unique plastic characteristics under high-temperature conditions: on the one hand, they undergo a softening phase transformation inside, adapting to the expansion displacement of metal components through continuous micro-creep; on the other hand, they allow the formation of micro-network cracks as stress release channels, absorbing local stress peaks by dispersing and preventing the expansion of metal components from causing penetrating structural damage to the refractory layer 6.

[0041] The pressing component 5 described above has two implementations:

[0042] The first implementation method, see [link / reference] Figure 5 , 6The downward pressing assembly 5 includes a first sleeve 51 sleeved on the pin 3 and a first nut 52 screwed to the pin 3; the two ends of the first sleeve 51 abut against the first nut 52 and the middle of the grab pin 4, respectively. During assembly, tightening the first nut 52 drives it to move downward along the pin 3, forcing the first sleeve 51 to move towards the fin 2 and apply vertical downward pressure to the middle of the grab pin 4, thereby causing the lower surfaces of both ends of the grab pin 4 to abut against the outer wall of the adjacent water-cooled wall tube 1. Specifically, a vertical gap is reserved between the bottom surface of the middle of the grab pin 4 and the top surface of the mounting plate 31. This gap provides deformation adjustment space for the thermal expansion of the grab pin 4 under high-temperature conditions, avoiding stress concentration caused by restricted thermal expansion.

[0043] For the second implementation method, please refer to... Figure 2 , 3 The pressing assembly 5 includes a pressure strip 53 slidably connected to the pin 3 and a second nut 54 screwed to the pin 3; the upper and lower surfaces of the pressure strip 53 abut against the top of the second nut 54 and the top of the grab pin 4, respectively. Specifically, the top of the grab pin 4, i.e., the arched position, is provided with a horizontally extending second horizontal section 44, which forms a surface contact with the lower surface of the pressure strip 53. During assembly, the second nut 54 is screwed down to drive it to move downward along the pin 3, forcing the pressure strip 53 to move towards the fin 2 and apply downward pressure to the second horizontal section 44 of the grab pin 4, thereby causing the lower surfaces at both ends of the grab pin 4 to abut against the outer wall of the adjacent water-cooled wall tube 1. In this embodiment, a vertical gap is also reserved between the bottom surface of the middle part of the grab pin 4 and the top surface of the mounting plate 31, providing compensation space for the thermal expansion deformation of the grab pin 4 under high temperature conditions, effectively avoiding structural stress concentration caused by limited expansion. Compared with the first embodiment, the pressure strip 53 can increase the number of anchoring points for the refractory layer 6.

[0044] Preferably, see Figure 2 A second sleeve 532 is fixedly provided in the middle of the pressure strip 53. The second sleeve 532 is sleeved on the pin 3 to enhance the structural strength of the middle part of the pressure strip 53.

[0045] Preferably, see Figure 7 The second horizontal section 44 is provided with an elevation section 45 to increase the height of the grab nail 4 to meet the casting requirements of the thicker refractory layer 6.

[0046] Further, see Figure 3 , 4 The pressure strip 53 has limiting strips 531 on both sides along its length, and the top of the grab pin 4 is located between the two limiting strips 531. That is, the two second horizontal segments 44 of the grab pin 4 are located between the two limiting strips 531, which prevents the pressure strip 53 from rotating around the axis of the pin 3 when under force through mechanical limiting, ensuring that the downward pressure transmission direction is always vertical and stable. In addition, it can also improve the overall structural strength of the pressure strip 53.

[0047] Preferably, the limiting strip 531 and the pressure strip 53 are manufactured using an integral stamping process, and the limiting strip 531 is bent into a cylindrical structure with an inwardly converging curved surface configuration. This special geometric design provides controllable radial elastic deformation capability under high-temperature conditions, enabling the limiting structure to maintain its mechanical constraint function while also coordinating with the system's thermal deformation response to achieve dynamic stress release.

[0048] In a preferred embodiment, see [reference] Figure 2 , 3 The clamping pin 4 has a horizontally extending first horizontal section 41 in the middle, and an oblong hole 42 is formed on the first horizontal section 41. The length direction of the oblong hole 42 is perpendicular to the axis of the water-cooled wall tube 1. The pin 3 passes through the oblong hole 42, and the oblong hole 42 and the pin 3 form a horizontal sliding pair. In actual assembly, the pin 3 is difficult to precisely center on the two water-cooled wall tubes 1 due to engineering deviations. The oblong hole 42 is designed to provide displacement compensation for the horizontal installation position. By adjusting the clamping pin 4 slightly along the length direction of the oblong hole 42, it is ensured that the clamping pin 4 always forms a double-point contact with the outer wall of the water-cooled wall tube 1, ensuring the stability of the clamping pin 4 installation.

[0049] The mounting plate 31 and the fin 2 can be installed by welding or by detachable assembly.

[0050] In one implementation, see [reference] Figure 5 , 6 The mounting plate 31 is provided with several U-shaped notches 311. The multi-focal welding area formed by the U-shaped notches 311 is used to achieve partial penetration welding between the mounting plate 31 and the fin 2, which significantly enhances the shear strength of the weld.

[0051] In another implementation, see Figure 2 , 3 The fin 2 has a mounting hole 21, and the mounting plate 31 has a threaded section 32 that passes through the mounting hole 21. A third nut 22 is screwed onto the threaded section 32 to press the mounting plate 31 onto the fin 2. The threaded section 32 and the third nut 22 cooperate to form a detachable connection between the pin 3 and the fin 2. Compared with on-site welding, modular threaded assembly effectively shortens the installation time at a single point, reduces reliance on worker skills, and ensures installation consistency in large-scale deployments.

[0052] Preferably, the pre-assembly process is optimized during threaded assembly: the third nut 22 is pre-fixed to the mounting hole 21 of the fin 2 by automated riveting or laser spot welding, and then the fin 2 with the pre-installed third nut 22 is welded to the water-cooled wall tube 1. In the final assembly stage, only tightening the threaded section 32 and the pre-embedded third nut 22 is required to complete the structural locking.

[0053] In a preferred embodiment, see [reference] Figure 1 , 3 The system also includes reinforcing nails 7. The end of the clamping nail 4 has a radially extending through hole 43. One end of the reinforcing nail 7 has two parallel, spaced-apart limiting parts 71, and a sliding part 72 located between the two limiting parts 71. The sliding part 72 passes through the through hole 43, and the two limiting parts 71 clamp the ends of the clamping nail 4. Adding the reinforcing nail 7 provides an additional anchoring node for the refractory layer 6. By designing the length of the sliding part 72 to be 0.5-1 mm longer than the length of the through hole 43, an axial thermal expansion compensation gap is formed. When the water-cooled wall is heated, the reinforcing nail 7 can freely undergo axial thermal displacement within this gap range, dynamically adapting to the difference in thermal expansion coefficients between the 310S stainless steel and the refractory castable, avoiding stress concentration at the anchoring point caused by limited thermal deformation, and thus collaboratively maintaining the overall structural integrity of the refractory layer 6.

[0054] Specifically, the main body of the reinforcing nail 7 is prefabricated with a fixed limiting part 71 and an extended sliding part 72. During the pre-assembly stage on the production line, the sliding part 72 is horizontally inserted into the through hole 43 of the grab nail 4. Then, the end of the sliding part 72 exposed on the outside of the grab nail 4 is subjected to cold stamping plastic deformation through a special mold, forcing a deformable limiting part 71 parallel to the existing fixed limiting part 71 to be formed at the end of the sliding part 72, so as to realize the double-sided mechanical locking structure of the reinforcing nail 7.

[0055] In a preferred embodiment, see [reference] Figure 1 , 8 The anchor points 4 on two adjacent fins 2 are staggered along the length of the water-cooled wall tube 1. The staggered anchor points form a self-supporting skeleton, reducing the risk of mold collapse during the casting of the refractory layer 6; at the same time, it breaks the stress concentration pattern of the traditional aligned arrangement, significantly enhancing the interface stability of the refractory castable attached to the water-cooled wall, thereby improving the overall structural durability of the anti-corrosion layer.

[0056] In a preferred embodiment, see [reference] Figure 8 , 9 The refractory layer 6 is provided with several combustible strips 8, which form expansion joints within the refractory layer 6 after combustion. Before casting the refractory layer 6, an array of combustible strips 8 is pre-embedded in the fire-facing side of the water-cooled wall at a specific distribution density; wherein the combustible strips 8 are cardboard strips or wooden strips. When the waste incinerator is first operated at high temperature, the combustibles are completely incinerated, forming a mesh-like expansion joint system that divides the continuous refractory layer 6 into several independent blocks. This prevents large-area expansion cracks in the refractory layer 6 due to the expansion difference between it and the water-cooled wall during operation, and also facilitates local repair or replacement of the refractory layer 6.

[0057] In practice, such as Figure 9As shown, pins 3, catch pins 4, and pressing components 5 are prohibited from being installed on the fin 2 where the expansion joint is set. At the same time, the catch pins 4 adjacent to the fin 2 should have their reinforcing pins 7 removed to avoid affecting the setting of the expansion joint.

[0058] In summary, this utility model constructs a water-cooled wall substrate by using spaced-apart water-cooled wall tubes 1 and fins 2 welded to the water-cooled wall tubes 1. Pins 3 are vertically fixed to the fire-facing side of the fins 2 via mounting plates 31. The mounting plates 31 are pre-installed with third nuts 22 to achieve modular assembly, effectively shortening construction time. M-shaped grab pins 4, after passing through pins 3, are pressed by a pressing component 5, working in conjunction with a displacement compensation mechanism in the waist-shaped hole 42 in the middle of the grab pin 4 to ensure stable contact between the grab pin 4 and the water-cooled wall tube 1 at two points. A vertical gap is reserved between the grab pin 4 and the mounting plate 31 to provide deformation space for the thermal expansion of the grab pin 4. Reinforcing nails 7 are added to strengthen the anchoring strength of the fire-resistant layer 6, thereby enhancing the structural strength of the anti-corrosion layer of the water-cooled wall tube 1. Simultaneously, combustible strips 8 are pre-embedded in the fire-resistant layer 6, forming a mesh-like expansion joint after combustion, thus cutting the entire fire-resistant layer 6 into multiple blocks and suppressing large-area cracking. Compared to existing technologies, modular installation of pins 3, grippers 4, and pressing components 5 can shorten the construction cycle, reduce reliance on worker skills, and ensure installation consistency for large-scale deployments.

[0059] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A structure for reinforcing the corrosion-resistant layer of water-cooled wall tubes in a waste incinerator, characterized in that, include: Several water-cooled wall tubes arranged at intervals (1); Fins (2) are provided between adjacent water-cooled wall tubes (1); The pin (3) has a mounting plate (31) at its bottom, which is mounted on the fin (2); The M-shaped catch pin (4) is slidably mounted on the pin (3); The pressing assembly (5) is installed on the pin (3). The pressing assembly (5) is used to press down the grab pin (4) so ​​that the grab pin (4) abuts against the adjacent water-cooled wall tube (1). And a fire-resistant layer (6) covering the fire-facing side of the water-cooled wall tube (1), wherein the pin (3), the catch pin (4) and the pressing assembly (5) are all located within the fire-resistant layer (6).

2. The anti-corrosion layer structure for reinforced water-cooled wall tubes of waste incinerators according to claim 1, characterized in that, The pressing assembly (5) includes a first sleeve (51) sleeved on the pin (3) and a first nut (52) screwed to the pin (3); the two ends of the first sleeve (51) abut against the middle of the first nut (52) and the gripper (4), respectively.

3. The anti-corrosion layer structure for reinforced water-cooled wall tubes of a waste incinerator according to claim 1, characterized in that, The pressing assembly (5) includes a pressure strip (53) slidably connected to the pin (3) and a second nut (54) screwed to the pin (3); the upper and lower surfaces of the pressure strip (53) abut against the top of the second nut (54) and the gripper (4), respectively.

4. The anti-corrosion layer structure for reinforced water-cooled wall tubes of waste incinerators according to claim 3, characterized in that, The pressure strip (53) is provided with limiting strips (531) on both sides along its length direction, and the top of the grab nail (4) is located between the two limiting strips (531).

5. The anti-corrosion layer structure for reinforced water-cooled wall tubes of a waste incinerator according to claim 3, characterized in that, The grab pin (4) has a horizontally extending first horizontal section (41) in the middle, and a waist-shaped hole (42) is opened on the first horizontal section (41). The length direction of the waist-shaped hole (42) is perpendicular to the axis of the water-cooled wall tube (1), and the pin (3) passes through the waist-shaped hole (42).

6. The anti-corrosion layer structure for reinforced water-cooled wall tubes of a waste incinerator according to claim 1, characterized in that, The fin (2) has a mounting hole (21), and the mounting plate (31) has a threaded section (32) that passes through the mounting hole (21). A third nut (22) is screwed onto the threaded section (32) to press the mounting plate (31) onto the fin (2).

7. The anti-corrosion layer structure for reinforced water-cooled wall tubes of a waste incinerator according to claim 1, characterized in that, It also includes a reinforcing nail (7), and the end of the gripping nail (4) is provided with a radially extending through hole (43). One end of the reinforcing nail (7) is provided with two parallel and spaced limiting parts (71) and a sliding part (72) provided between the two limiting parts (71). The sliding part (72) passes through the through hole (43), and the two limiting parts (71) are clamped on both sides of the end of the gripping nail (4).

8. The anti-corrosion layer structure for reinforced water-cooled wall tubes of a waste incinerator according to claim 1, characterized in that, The pins (4) on two adjacent fins (2) are staggered along the length of the water-cooled wall tube (1).

9. The anti-corrosion layer structure for reinforced water-cooled wall tubes of a waste incinerator according to claim 1, characterized in that, The refractory layer (6) is provided with a number of combustible strips (8), and the combustible strips (8) form expansion joints in the refractory layer (6) after burning.

Images