Garbage incinerator side wall connecting device based on thermal expansion

Abstract

The utility model belongs to the technical field of garbage incineration, and relates to a garbage incinerator side wall connecting device based on thermal expansion, which is used for connecting a garbage incinerator side wall and a water-cooled wall header and comprises the water-cooled wall header, an upper support, an expansion joint, a lower support, a fire grate side wall frame and a fire-resistant thermal insulation material. The upper support is arranged below the water-cooled wall header and comprises channel steel and a Z-shaped connecting frame, a flange plate of the channel steel is fixedly connected below the pipe wall of the water-cooled wall header in an inverted buckling mode, and the Z-shaped connecting frame is welded to the back face of a web of the channel steel; the lower support is arranged below the upper support and located above the fire grate side wall frame. The upper support and the lower support at the two ends of the expansion joint are matched with the expansion joint, the cavity expansion gap and the fire-resistant heat preservation material, effective connection of the incinerator grate side wall and the boiler water cooling wall is achieved, a sealed hearth cavity is formed, the problem of high-temperature thermal expansion is effectively solved, sufficient heat insulation and heat preservation are achieved, and the service life of the incinerator is prolonged. And normal operation of the incinerator is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of garbage incineration, and relates to a garbage incinerator side wall connecting device based on thermal expansion. Background Art

[0002] With the rapid development of the national economy and the acceleration of urbanization, people's living standards are improving day by day, the amount of urban domestic waste is increasing, and the disadvantages and contradictions of landfill treatment are becoming increasingly apparent. Incineration treatment has gradually become the main method of waste treatment because it can get rid of the dependence on a large amount of land resources and meet the dual requirements of environmental protection and resource utilization. In recent years, encouraged by the national industrial policy of reducing, harmless and resource-based domestic waste, my country's waste incineration industry has entered a period of rapid development. New waste incineration plants have been built in various large and medium-sized cities, and the level of harmless treatment and resource utilization of waste is getting higher and higher.

[0003] In recent years, the calorific value of domestic garbage has become higher and higher. Combined with the technological characteristics of garbage incineration, the temperature of the incinerator furnace during operation is also getting higher and higher. In order to reduce the impact of high temperature on the combustion flue gas and the furnace wall, the incinerator furnace has gradually changed from the refractory insulation form to the water-cooled form of the water-cooled wall tube of the waste heat boiler above, so as to achieve effective heat absorption and temperature control of the furnace, which is beneficial to improve the utilization efficiency of thermal energy of garbage incineration, and is also beneficial to the complete combustion of the furnace flue gas, reduce the generation of pollutants in the flue gas, and improve the overall operation quality of garbage incineration treatment.

[0004] Below the incinerator furnace is a grate for waste transportation and combustion. The side walls of the water-cooled furnace are mainly boiler water-cooled wall tubes and water-cooled wall headers extending downward from the waste heat boiler. A small area at the bottom of the side wall is the refractory side wall of the grate, which is supported on the grate side wall frame below. During operation, the boiler water-cooled wall tubes and water-cooled wall headers on the side wall will produce significant thermal expansion, which is inconsistent with the expansion of the refractory side wall below. Therefore, an effective connection device must be adopted between the two, which must not only meet the sealing of the furnace, but also absorb the thermal expansion of both parties, and achieve effective thermal insulation to ensure the long-term and stable operation of the incinerator. The side walls of the furnace of the original incinerator equipment solution are an integrated refractory insulation material solution, which is integrally overlapped on the side wall frame of the grate. No boiler water-cooled wall tubes are arranged, and there is no need to set up a corresponding connection transition mechanism including expansion joints.

[0005] However, some existing incinerator equipment has begun to install boiler water-cooled wall tubes and water-cooled wall headers on the side walls of the furnace, and corresponding expansion joints and connecting transition mechanisms are set between the side walls of the grate below. However, the expansion joints in the existing schemes have not formed a good structural form, the flexible fillers are easy to fall off, and the thermal insulation effect of the expansion joints is not good; at the same time, the expansion joints close to the inside of the furnace are easily filled and precipitated by garbage materials, and the expansion and extrusion during operation are likely to cause damage to adjacent refractory materials; although some expansion joints are provided with shielding steel plates close to the inside of the furnace, the steel plates are easily deformed and fall off due to the high temperature of the furnace during operation, and have a limited lifespan and are easy to affect the operation.

[0006] Therefore, it is necessary to study and adopt effective connection transition mechanisms to meet the long-term stable operation requirements of the furnace side walls during incinerator operation, such as sealing connection, thermal expansion, thermal insulation, etc., to improve the overall operation quality of incinerator equipment, improve the thermal energy utilization efficiency of waste incineration, and promote the sustainable and healthy development of the industry. Utility Model Content

[0007] In view of this, the purpose of the utility model is to provide a waste incinerator side wall connection device based on thermal expansion, which is used to connect the side wall of the waste incinerator and the water-cooled wall header to adapt to the stable operation of the water-cooled furnace structure incinerator, effectively solve the high-temperature thermal expansion problem, achieve sufficient thermal insulation, and meet the operating temperature requirements of the outside of the furnace.

[0008] In order to achieve the above object, the utility model provides the following technical solutions:

[0009] A waste incinerator side wall connection device based on thermal expansion, comprising a water-cooled wall header, an upper bracket, an expansion joint, a lower bracket, a grate side wall frame and a refractory heat-insulating material;

[0010] The upper bracket is arranged below the water-cooled wall header, and comprises a channel steel and a Z-shaped connecting frame. The flange plate of the channel steel is inverted and fixed below the tube wall of the water-cooled wall header, and the Z-shaped connecting frame is welded to the back of the web of the channel steel;

[0011] The lower support is arranged below the upper support and above the grate side wall frame, and comprises a top plate, a side plate and a bottom plate, and the top plate and the bottom plate are both fixedly connected to the same side of the side plate, and the right end of the bottom plate is placed on the upper end surface of the grate side wall frame;

[0012] The top plate is arranged transversely below the Z-shaped connecting frame, and a cavity is left between the top plate and the upper plate of the Z-shaped connecting frame, and the two ends of the expansion joint are respectively at the left end of the Z-shaped connecting frame and the upper end of the side plate, thereby forming a first cavity expansion joint between the top plate, the expansion joint and the upper plate of the Z-shaped connecting frame;

[0013] The refractory heat-insulating material comprises a first refractory heat-insulating material arranged on the right side of the lower bracket and a second refractory heat-insulating material arranged on the right side of the Z-shaped connecting frame, wherein the second refractory heat-insulating material comprises a second high-aluminum aluminum silicate fiber wool board and a second corundum mullite wear-resistant castable material sequentially connected in a direction close to the furnace;

[0014] The first refractory heat-insulating material comprises a first high-aluminum aluminum silicate fiber wool board, a calcium silicate board, a lightweight heat-insulating castable and a first corundum mullite wear-resistant castable which are sequentially connected in a direction close to the furnace;

[0015] The lightweight thermal insulation castable is arranged between the bottom plate and the lower plate of the Z-shaped connecting frame, and a cavity is left between the upper end of the lightweight thermal insulation castable and the lower plate of the Z-shaped connecting frame, and the lower end of the second corundum mullite wear-resistant castable extends downward by a certain height, so that the second corundum mullite wear-resistant castable intersects with the lightweight thermal insulation castable in the vertical direction, and does not intersect with the first corundum mullite wear-resistant castable in the vertical direction, thereby forming a second cavity expansion joint between the second corundum mullite wear-resistant castable, the lightweight thermal insulation castable, the calcium silicate board and the lower plate of the Z-shaped connecting frame, and the second cavity expansion joint is connected to the first cavity expansion joint.

[0016] Furthermore, the length of the top plate is smaller than the length of the upper plate in the Z-shaped connecting frame, so that a gap is reserved between the top plate and the vertical plate in the Z-shaped connecting frame, thereby making the second cavity expansion joint communicate with the first cavity expansion joint.

[0017] Furthermore, a side panel bracket is provided outside the side panel to support the side panel.

[0018] Furthermore, a supporting rib plate connected to the lower end of the side plate is arranged below the left end of the bottom plate, so that the lower bracket and the grate side wall frame are combined to form a stable structure.

[0019] Furthermore, a lower edge plate facing downward is provided at the left end of the Z-shaped connecting frame, and the expansion joint is connected to the left end of the Z-shaped connecting frame through the lower edge plate.

[0020] Furthermore, an inclined surface is provided on the upper end of the first corundum-mullite wear-resistant castable, and the inclined surface is inclined downward toward the furnace to form a chute expansion joint.

[0021] Furthermore, the second cavity expansion joint and the first cavity expansion joint are both filled with elastic cobalt-containing aluminum silicate fiber loose wool.

[0022] Furthermore, the specifications of the second high-aluminum aluminum silicate fiber wool board and the second corundum mullite wear-resistant casting material are respectively 100 mm thick high-aluminum aluminum silicate fiber wool board and 150 mm thick corundum mullite wear-resistant casting material.

[0023] Furthermore, the specifications of the first high-aluminum aluminum silicate fiber wool board, calcium silicate board, lightweight thermal insulation castable and first corundum mullite wear-resistant castable are respectively 100mm thick high-aluminum aluminum silicate fiber wool board, 50mm thick calcium silicate board, 120mm lightweight thermal insulation castable and 180mm thick corundum mullite wear-resistant castable.

[0024] Furthermore, a third refractory heat-insulating material is provided on the right side of the water-cooled wall header, the third refractory heat-insulating material is a corundum-mullite wear-resistant casting material, and the lower part of the third refractory heat-insulating material is connected to the second refractory heat-insulating material.

[0025] The beneficial effects of the utility model are:

[0026] 1. The utility model provides a waste incinerator side wall connection device based on thermal expansion. The upper bracket and the lower bracket at both ends of the expansion joint cooperate with the expansion joint, the cavity expansion joint and the refractory insulation material to achieve an effective connection between the incinerator grate side wall and the boiler water-cooled wall, forming a sealed furnace cavity, effectively solving the high-temperature thermal expansion problem, achieving sufficient thermal insulation and ensuring the normal operation of the incinerator.

[0027] 2. The structure of the garbage incinerator side wall connection device is simple and functional, which fully meets the independent thermal expansion requirements of the grate side wall and the boiler water-cooled wall under the high temperature condition of the furnace, ensuring the stability and reliability of the equipment during the operation of the incinerator; the upper and lower brackets of the garbage incinerator side wall connection device are respectively provided with a reasonable combination and thickness of refractory insulation materials, which can effectively achieve the effect of heat insulation, good economy, convenient construction, and ensure that the temperature outside the furnace meets the relevant specifications.

[0028] 3. The expansion joint of the side wall connection device of the waste incinerator is composed of two upper cavity expansion joints and the lower inclined slot expansion joint. It can ensure that the soft fillers of the two upper cavity expansion joints do not fall off during operation, and the thermal insulation effect is good, and it can also prevent the garbage materials from accumulating in the inclined slot expansion joint and affecting the stable operation of the refractory materials.

[0029] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0031] Figure 1 This is a schematic structural diagram of a waste incinerator side wall connection device based on thermal expansion in the utility model;

[0032] Figure 2 It is a structural schematic diagram of a waste incinerator side wall connection device based on thermal expansion in the utility model (the state after being filled with refractory heat-insulating materials).

[0033] Figure numerals: boiler water-cooled wall tube 1, water-cooled wall header 2, upper bracket 3, channel steel 31, Z-shaped connecting frame 32, lower edge plate 321, expansion joint 4, lower bracket 5, top plate 51, side plate 52, side plate bracket 53, bottom plate 54, supporting rib plate 6, grate side wall frame 7, grate 8, first refractory thermal insulation material 9, first high-aluminum aluminum silicate fiber wool board 91, calcium silicate board 92, lightweight thermal insulation castable 93, first corundum mullite wear-resistant castable 94, chute expansion joint 10, cavity expansion joint 11, first cavity expansion joint 111, second cavity expansion joint 112, second refractory thermal insulation material 12, second high-aluminum aluminum silicate fiber wool board 121, second corundum mullite wear-resistant castable 122, stainless steel grab nails 13, third refractory thermal insulation material 14. DETAILED DESCRIPTION

[0034] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0035] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0036] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] See also Figure 1-2 , which is a waste incinerator side wall connection device based on thermal expansion, including a water-cooled wall header 2, an upper bracket 3, an expansion joint 4, a lower bracket 5, a grate side wall frame 7 and a refractory insulation material;

[0038] One side of the grate side wall frame 7 is connected to the grate 8, and one end of the water-cooled wall header 2 is connected to the boiler water-cooled wall tube 1. In the present embodiment, the side of the grate side wall frame 7 close to the grate 8 is the inner side (right end), the side of the grate side wall frame 7 away from the grate 8 is the outer side (left end), the end of the water-cooled wall header 2 close to the boiler water-cooled wall tube 1 is the upper side, and the end of the water-cooled wall header away from the boiler water-cooled wall tube 1 is the lower side.

[0039] The upper bracket 3 is arranged below the water-cooled wall header 2, and includes a channel steel 31 and a Z-shaped connecting frame 32. The flange plate of the channel steel 31 is invertedly welded below the tube wall of the water-cooled wall header 2, and the Z-shaped connecting frame 32 is welded to the back of the web of the channel steel 31. Below the Z-shaped connecting frame 32 is a reserved cavity expansion joint 11, and the right side is a refractory insulation material area, and a lower edge plate 321 facing downward is arranged at the left end of the Z-shaped connecting frame 32.

[0040] The lower support 5 is arranged below the upper support 3 and above the grate side wall frame 7, and includes a top plate 51, a side plate 52, a side plate support 53 and a bottom plate 54. The top plate 51, the side plate 52 and the bottom plate 54 form a [-shaped structure, that is, the top plate 51 and the bottom plate 54 are fixedly connected to the same side of the side plate 52 and are respectively located at both ends of the side plate 52;

[0041] The top plate 51 is arranged horizontally below the Z-shaped connecting frame 32, and a cavity is reserved between the top plate 51 and the upper plate of the Z-shaped connecting frame 32 to form a first cavity expansion joint 111, and the length of the top plate 51 is smaller than the length of the upper plate in the Z-shaped connecting frame 32, so that a gap is reserved between the top plate 51 and the vertical plate in the Z-shaped connecting frame 32, thereby forming a first cavity expansion joint 111 with an opening.

[0042] The side panels 52 are arranged vertically, welded to the top panel 51 at the top, and connected to the bottom panel 54 at the bottom, and a side panel bracket 53 is provided outside the side panels 52 to support the side panels 52;

[0043] The right end of the bottom plate is placed on the upper end surface of the grate side wall frame 7, and the left end is connected to the side plate 52. A supporting rib plate 6 connected to the lower end of the side plate 52 is arranged below the left end of the bottom plate, so that the lower bracket 5 and the grate side wall frame 7 are combined to form a stable structure.

[0044] The expansion joint 4 is installed at the lower edge plate 321 of the Z-shaped connecting frame 32 in the upper bracket 3 and the upper end of the side plate 52 in the lower bracket 5. The expansion joint 4 is made of flexible material to achieve overall sealing of the furnace side wall.

[0045] The expansion joint 4, the upper plate of the Z-shaped connecting frame 32 and the top plate 51 in the lower bracket 5 surround to form a first cavity expansion joint 111 for installing thermal insulation fillers to achieve thermal insulation and absorb thermal expansion of the upper and lower areas of the furnace side wall.

[0046] Preferably, the first cavity expansion joint 111 is filled with loose wool containing zirconium-aluminum silicate fibers.

[0047] A second refractory heat-insulating material 12 is arranged on the right side of the upper bracket 3, and a first refractory heat-insulating material 9 is arranged on the right side of the lower bracket 5. The second refractory heat-insulating material 12 includes a second high-aluminum aluminum silicate fiber wool board 121 and a second corundum mullite wear-resistant casting material 122 which are sequentially connected along the direction close to the furnace, and the specifications thereof are respectively 100 mm thick high-aluminum aluminum silicate fiber wool board and 150 mm thick corundum mullite wear-resistant casting material.

[0048] Preferably, a third refractory insulation material 14 is further provided inside the boiler water-cooled wall tube 1 and the water-cooled wall header 2 , and the third refractory insulation material 14 is a corundum mullite wear-resistant casting material, and the second refractory insulation material 12 is connected below the third refractory insulation material 14 .

[0049] A first refractory heat-insulating material 9 is arranged on the right side of the side plate 52 in the lower bracket and above the bottom plate 54. The first refractory heat-insulating material 9 includes a first high-aluminum aluminum silicate fiber wool board 91, a calcium silicate board 92, a lightweight heat-insulating castable 93 and a first corundum mullite wear-resistant castable 94 which are sequentially connected in the direction close to the furnace. The specifications are respectively 100mm thick high-aluminum aluminum silicate fiber wool board, 50mm thick calcium silicate board, 120mm thick lightweight heat-insulating castable, and 180mm thick corundum mullite wear-resistant castable.

[0050] Specifically, stainless steel grabbing nails 13 are arranged in both the first refractory heat-insulating material 9 and the second refractory heat-insulating material 12 to serve as a fixing framework for connecting the refractory heat-insulating materials to the side panels 52 or the Z-shaped connecting frame 32 .

[0051] The first high-alumina aluminum silicate fiber wool board 91 and the calcium silicate board 92 are arranged between the bottom plate 54 and the top plate 51 and filled fully;

[0052] The lightweight thermal insulation castable 93 is arranged between the base plate 54 and the lower plate of the Z-shaped connecting frame 32, and a cavity is left between the upper end of the lightweight thermal insulation castable 93 and the lower plate of the Z-shaped connecting frame 32. The lower end of the second corundum mullite wear-resistant castable 122 extends downward to a certain height. The second corundum mullite wear-resistant castable 122 intersects with the lightweight thermal insulation castable 93 in the vertical direction, and has a gap in the horizontal direction, and does not intersect with the first corundum mullite wear-resistant castable 94 in the vertical direction, so as to form a second cavity expansion joint 112 between the second corundum mullite wear-resistant castable 122, the lightweight thermal insulation castable 93, the calcium silicate board 92 and the lower plate of the Z-shaped connecting frame 32, so as to meet the needs of thermal insulation and thermal expansion, and also meet the needs of long-term stable operation. Under the high furnace temperature conditions during operation, the upper bracket and refractory insulation materials will expand together with the boiler water-cooled wall tubes and water-cooled wall headers.

[0053] Preferably, an inclined surface is provided at the upper end of the first corundum-mullite wear-resistant castable 94, and the inclined surface is inclined downward toward the furnace to form a chute expansion joint 10, which can effectively prevent garbage materials from entering and remaining in the chute expansion joint 10 during furnace operation, thereby eliminating the risk of excessive accumulation of materials damaging the refractory material.

[0054] Specifically, the first cavity expansion joint 111 near the expansion joint 4 is filled with elastic cobalt-containing aluminum silicate fiber loose cotton, which can not only absorb expansion but also play the role of sealing and heat insulation. The second cavity expansion joint 112 between the refractory insulation material on the right side of the Z-shaped connecting frame 32 in the upper bracket 3 and the refractory insulation material on the right side of the lower bracket 5 is also filled with cobalt-containing aluminum silicate fiber rope, which can not only absorb expansion but also play the role of sealing and heat insulation, and is not easy to fall off during long-term operation, and is stable and reliable; and the first cavity expansion joint 111 is connected to the second cavity expansion joint 112 to form a cavity expansion joint 11.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A waste incinerator side wall connection device based on thermal expansion, characterized in that: It comprises a water-cooled wall header (2), an upper bracket (3), an expansion joint (4), a lower bracket (5), a grate side wall frame (7) and a refractory heat-insulating material; The upper bracket is arranged below the water-cooled wall header, and comprises a channel steel (31) and a Z-shaped connecting frame (32); the flange plate of the channel steel (31) is inverted and fixedly connected to the bottom of the tube wall of the water-cooled wall header (2); and the Z-shaped connecting frame (32) is welded to the back side of the web plate of the channel steel (31); The lower support (5) is arranged below the upper support (3) and above the grate side wall frame (7), and comprises a top plate (51), a side plate (52) and a bottom plate (54), wherein the top plate (51) and the bottom plate (54) are both fixedly connected to the same side of the side plate (52), and the right end of the bottom plate (54) is placed on the upper end surface of the grate side wall frame (7); The top plate (51) is arranged transversely below the Z-shaped connecting frame (32), and a cavity is left between the top plate and the upper plate of the Z-shaped connecting frame. The two ends of the expansion joint (4) are respectively at the left end of the Z-shaped connecting frame (32) and the upper end of the side plate (52), thereby forming a first cavity expansion joint (111) between the top plate (51), the expansion joint (4) and the upper plate of the Z-shaped connecting frame (32); The refractory heat-insulating material comprises a first refractory heat-insulating material (9) arranged on the right side of the lower bracket (5) and a second refractory heat-insulating material (12) arranged on the right side of the Z-shaped connecting frame (32), wherein the second refractory heat-insulating material comprises a second high-aluminum aluminum silicate fiber wool board (121) and a second corundum mullite wear-resistant castable (122) which are sequentially connected in a direction close to the furnace; The first refractory heat-insulating material (9) comprises a first high-aluminum aluminum silicate fiber wool board (91), a calcium silicate board (92), a lightweight heat-insulating castable (93) and a first corundum mullite wear-resistant castable (94) which are sequentially connected in a direction close to the furnace; The lightweight thermal insulation castable (93) is arranged between the bottom plate (54) and the lower plate of the Z-shaped connecting frame (32), and a cavity is left between the upper end of the lightweight thermal insulation castable and the lower plate of the Z-shaped connecting frame. The lower end of the second corundum mullite wear-resistant castable (122) extends downward to a certain height, so that the second corundum mullite wear-resistant castable intersects with the lightweight thermal insulation castable (93) in the vertical direction, and does not intersect with the first corundum mullite wear-resistant castable (94) in the vertical direction, thereby forming a second cavity expansion joint (112) between the second corundum mullite wear-resistant castable (122), the lightweight thermal insulation castable (93), the calcium silicate board (92) and the lower plate of the Z-shaped connecting frame (32), and the second cavity expansion joint (112) is connected to the first cavity expansion joint (111).

2. The waste incinerator side wall connection device based on thermal expansion according to claim 1 is characterized in that: The length of the top plate (51) is smaller than the length of the upper plate in the Z-shaped connecting frame, so that a gap is reserved between the top plate (51) and the vertical plate in the Z-shaped connecting frame (32), thereby enabling the second cavity expansion joint (112) to communicate with the first cavity expansion joint (111).

3. The waste incinerator side wall connection device based on thermal expansion according to claim 1 is characterized in that: A side panel bracket (53) is provided outside the side panel (52) to support the side panel.

4. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: A supporting rib plate (6) connected to the lower end of the side plate (52) is arranged below the left end of the bottom plate (54), so that the lower bracket (5) and the grate side wall frame (7) are combined to form a stable structure.

5. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: A lower edge plate (321) facing downward is provided at the left end of the Z-shaped connecting frame (32), and the expansion joint (4) is connected to the left end of the Z-shaped connecting frame (32) via the lower edge plate (321).

6. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: An inclined surface is provided on the upper end of the first corundum-mullite wear-resistant castable (94), and the inclined surface is inclined downward toward the furnace to form a chute expansion joint (10).

7. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: The second cavity expansion joint (112) and the first cavity expansion joint (111) are both filled with elastic cobalt-containing aluminum silicate fiber loose cotton.

8. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: The specifications of the second high-aluminum aluminum silicate fiber wool board (121) and the second corundum mullite wear-resistant casting material (122) are respectively 100 mm thick high-aluminum aluminum silicate fiber wool board and 150 mm thick corundum mullite wear-resistant casting material.

9. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: The specifications of the first high-aluminum aluminum silicate fiber wool board (91), the calcium silicate board (92), the lightweight thermal insulation castable (93) and the first corundum mullite wear-resistant castable (94) are respectively 100 mm thick high-aluminum aluminum silicate fiber wool board, 50 mm thick calcium silicate board, 120 mm lightweight thermal insulation castable and 180 mm thick corundum mullite wear-resistant castable.

10. The waste incinerator side wall connection device based on thermal expansion according to claim 1, characterized in that: A third refractory heat-insulating material (14) is also provided on the right side of the water-cooled wall header (2), the third refractory heat-insulating material is a corundum-mullite wear-resistant casting material, and the second refractory heat-insulating material (12) is connected below the third refractory heat-insulating material (14).

Images