Boiler wall structure

Abstract

The utility model relates to the technical field of boilers, in particular to a boiler wall structure which comprises a refractory layer, a heat insulation layer, a water wall tube layer, a heat preservation layer and an outer wall layer which are sequentially arranged from inside to outside, and the refractory layer is formed by detachably splicing a plurality of refractory unit modules; the dismounting and mounting assembly comprises an outer frame arranged at the outer end of the fire-resistant unit module in a wrapping mode and a dismounting and mounting unit detachably connected with the outer frame and fixed to the heat insulation layer. Through the arrangement of a plurality of fire-resistant unit modules and the modular structural design, the furnace wall structure is more convenient to replace and maintain, the maintenance efficiency is improved, and the furnace wall structure of the boiler can be conveniently expanded or transformed according to application requirements; in addition, the disassembly and assembly assemblies are arranged to be matched with the multiple fireproof unit modules for splicing use, the fireproof unit modules installed at any positions can be disassembled, assembled and separated, only the damaged fireproof unit modules are replaced, and the overall operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, specifically to boiler furnace wall structure. Background Technology

[0002] As a crucial component of the boiler system, the boiler furnace wall's structural design and installation directly impact the boiler's operational safety, stability, and ease of maintenance. Traditional boiler furnace wall structures typically employ refractory bricks or other high-temperature materials. While these structures can meet the high temperatures and thermal shock requirements of the furnace, over long-term use, the refractory layer of the furnace wall structure suffers damage due to aging, wear, and thermal expansion. Current maintenance often requires the removal of large sections for repair or replacement, which is not only time-consuming and labor-intensive but also costly.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a boiler furnace wall structure.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a boiler furnace wall structure, comprising a refractory layer, a heat insulation layer, a water-cooled wall tube layer, a heat insulation layer, and an outer wall layer arranged sequentially from the inside to the outside, wherein the refractory layer is composed of multiple refractory unit modules that can be detachably spliced ​​together;

[0006] The assembly and disassembly assembly includes an outer frame covering the outer end of the fire-resistant unit module and an assembly and disassembly unit detachably connected to the outer frame and fixed on the insulation layer, for disassembling and assembling one or more of the fire-resistant unit modules that constitute damage in the fire-resistant layer.

[0007] Furthermore, the disassembly and assembly unit includes a horizontal plate disposed on the heat insulation layer and several inserts disposed at equal intervals on the horizontal plate. The end corners of the outer frame are detachably provided with protrusions, and the protrusions are provided with insertion ports that are adapted to the inserts on the corresponding side of the inserts.

[0008] Furthermore, the end corners of the insert, the protrusion, and the outer frame are all provided with screw holes for rotating and fixing the screw.

[0009] Furthermore, the outer frame has an opening at one end corner and on the side adjacent to the heat insulation layer for separating the protrusion.

[0010] Furthermore, the outer end of the outer frame is provided with a telescopic groove;

[0011] The expansion groove is used to compensate for the thermal expansion and contraction of the refractory unit modules at high temperatures and to reduce the structural stress between the spliced ​​refractory unit modules.

[0012] Furthermore, the horizontal plate is provided with a second telescopic groove that is distributed opposite to the first telescopic groove.

[0013] Furthermore, two disassembly and assembly units that are spliced ​​back to back are provided between the two adjacent rows of fire-resistant unit modules.

[0014] Compared with the prior art, this utility model has the following advantages: The modular design of multiple refractory unit modules makes the replacement and maintenance of the furnace wall structure more convenient, improving maintenance efficiency. It also allows for easy expansion or modification of the boiler furnace wall structure according to application needs. Furthermore, the modular assembly and disassembly components, used in conjunction with multiple refractory unit modules, allow for the disassembly and separation of individual refractory unit modules installed at any location, replacing only the damaged modules, making the overall operation convenient. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a perspective view of the overall structure of an embodiment of the present utility model.

[0018] Figure 3 This is a perspective view of the disassembly and separation of a refractory unit module in one embodiment of the present invention.

[0019] Figure 4 This is a perspective view of the disassembly and assembly unit according to an embodiment of the present utility model.

[0020] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle;

[0021] Figure 6 This is a perspective view of the fire-resistant unit module according to an embodiment of the present invention.

[0022] In the diagram: 1. Fire-resistant layer; 2. Insulation layer; 3. Water-cooled wall tube layer; 4. Thermal insulation layer; 5. Outer wall layer; 6. Fire-resistant unit module; 7. Assembly / disassembly assembly; 71. Outer frame; 711. Opening; 72. Assembly / disassembly unit; 721. Horizontal plate; 722. Insert block; 73. Protrusion; 731. Socket; 8. Expansion groove one; 9. Expansion groove two. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figure 1-6 As shown, the boiler furnace wall structure of this utility model includes a refractory layer 1, a heat insulation layer 2, a water-cooled wall tube layer 3, a heat insulation layer 4, and an outer wall layer 5 arranged sequentially from the inside to the outside. The refractory layer 1 is composed of multiple refractory unit modules 6 that can be detachably spliced ​​together.

[0025] The disassembly assembly 7 includes an outer frame 71 covering the outer end of the fire-resistant unit module 6 and a disassembly assembly unit 72 detachably connected to the outer frame 71 and fixed on the heat insulation layer 2, for disassembling and assembling one or more of the fire-resistant unit modules 6 that constitute damage in the fire-resistant layer 1.

[0026] In practice, the boiler is installed sequentially from the inside out as follows: refractory layer 1, insulation layer 2, water-cooled wall tube layer 3, heat insulation layer 4, and outer wall layer 5. Refractory layer 1 is the innermost layer, mainly used to withstand the high temperature, heat flow, and chemical corrosion inside the furnace. Insulation layer 2 is located outside refractory layer 1, mainly to insulate the furnace from high-temperature heat and prevent overheating of the external structure. Lightweight insulating bricks, rock wool, ceramic fibers, and other materials can be used to reduce heat loss and heat conduction, ensuring that the temperature of the outer structure remains within a safe range. Water-cooled wall tube layer 3 is located outside insulation layer 2, close to the inner side of the boiler's outer wall. Its function is to absorb heat from the furnace and heat water or steam to cool the furnace wall. Heat insulation layer 4 is used to improve the boiler's thermal efficiency and reduce external heat loss. It is generally made of glass wool, rock wool, polyurethane foam, etc. The outer wall layer 5 is the boiler's outer shell structure, used to support the entire furnace wall structure and protect the boiler from the influence of the external environment. It is made of steel plates or other metal materials.

[0027] Furthermore, through the outer frame 71 covering the outside of the refractory unit module 6 and the corresponding disassembly and assembly unit 72 that can be detachably connected to the outer frame 71, the refractory layer 1 composed of multiple refractory unit modules 6 can be modularly assembled. Moreover, the refractory unit modules 6 covered in each outer frame 71 can be constructed using refractory bricks, making the replacement and maintenance of the furnace wall structure more convenient and improving maintenance efficiency.

[0028] In one embodiment, the disassembly and assembly unit 72 includes a horizontal plate 721 disposed on the heat insulation layer 2 and several inserts 722 disposed at equal intervals on the horizontal plate 721. The end corners of the outer frame 71 are detachably provided with protrusions 73, and one side of the protrusion 73 corresponding to the insert 722 is provided with an insertion port 731 adapted to the insert 722. This design, by installing a horizontal plate 721 on one side of the corresponding fire-resistant layer 1 on the insulation layer 2 using welding or bolts, and by welding equidistantly spaced inserts 722 on the horizontal plate 721, and by providing protrusions 73 at the four corners of the outer frame 71 and assembling them along its thickness direction, with insertion slots 731 on the protrusions 73 for fitting the inserts 722, enables the installation and fixation of individual fire-resistant unit modules 6 fixed on the horizontal plate 721. This achieves equidistant installation of fire-resistant unit modules 6 on the horizontal plate 721, is simple to operate, and is suitable for replacing and maintaining individual fire-resistant unit modules 6 damaged on one side of the fire-resistant layer 1, thus improving maintenance efficiency.

[0029] In one embodiment, the end corners of the insert 722, the protrusion 73, and the outer frame 71 are all provided with screw holes for rotating and fixing screws. This design allows the refractory unit module 6 to be fixed to the inner side of the insulation layer 2 and form the refractory layer 1 using screws through the coaxially formed screw holes at the end corners of the insert 722, the protrusion 73, and the outer frame 71, thus withstanding the high temperature, heat flow, and chemical corrosion within the furnace.

[0030] It should be noted that the protrusion 73 is inserted along the height direction of the insert 722, and the outer frame 71 and the protrusion 73 are inserted along the axial direction of the screw.

[0031] In one embodiment, an opening 711 for separating the protrusion 73 is provided on the end corner of the outer frame 71 and on the side of the heat insulation layer 2. This design facilitates the axial sliding separation or assembly of the fire-resistant unit module 6 by leaving an opening 711 on the side of the heat insulation layer 2 corresponding to the slot for fitting the insertion of the protrusion 73 at the end corner of the outer frame 71.

[0032] In one embodiment, the outer end of the outer frame 71 is provided with a telescopic groove 8;

[0033] The expansion groove 8 is used to compensate for the thermal expansion and contraction of the fire-resistant unit module 6 at high temperatures and to reduce the structural stress between the fire-resistant unit modules 6 that are spliced ​​together. In this design, the expansion groove 8 opened at the outer end of the outer frame 71 can compensate for the thermal expansion and contraction of the fire-resistant unit module 6 at high temperatures and reduce the structural stress between the fire-resistant unit modules 6 that are spliced ​​together.

[0034] In one embodiment, the horizontal plate 721 is provided with a second expansion groove 9 distributed opposite to the first expansion groove 8. This design, by machining the second expansion groove 9 on the horizontal plate 721 and distributing it opposite to the first expansion groove 8, further improves the thermal expansion design.

[0035] In one embodiment, two back-to-back disassembly and assembly units 72 are provided between two adjacent rows of fire-resistant unit modules 6. This design allows for the detachable connection of the fire-resistant unit modules 6 on the adjacent rows by using two horizontal plates 721 fixed with screws, and inserts 722 and protrusions 73 at opposite ends of the two horizontal plates 721 to the fire-resistant unit modules 6 on the adjacent side, facilitating the disassembly and assembly of individual fire-resistant unit modules 6.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "several" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A boiler furnace wall structure, characterized in that: It includes a fire-resistant layer (1), a heat insulation layer (2), a water-cooled wall tube layer (3), a heat insulation layer (4), and an outer wall layer (5) arranged sequentially from the inside to the outside. The fire-resistant layer (1) is composed of multiple fire-resistant unit modules (6) that can be disassembled and spliced ​​together. The disassembly assembly (7) includes an outer frame (71) covering the outer end of the fire-resistant unit module (6) and a disassembly unit (72) detachably connected to the outer frame (71) and fixed on the heat insulation layer (2), for disassembling and assembling one or more of the fire-resistant unit modules (6) that constitute the fire-resistant layer (1) that are damaged.

2. The boiler furnace wall structure according to claim 1, characterized in that: The disassembly unit (72) includes a horizontal plate (721) disposed on the heat insulation layer (2) and several inserts (722) disposed at equal intervals on the horizontal plate (721). The corners of the outer frame (71) are detachably provided with protrusions (73), and one side of the protrusion (73) corresponding to the insert (722) is provided with a socket (731) adapted to the insert (722).

3. The boiler furnace wall structure according to claim 2, characterized in that: The end corners of the insert (722), the protrusion (73), and the outer frame (71) are all provided with screw holes for rotating and fixing the screw.

4. The boiler furnace wall structure according to claim 2, characterized in that: An opening (711) for separating the protrusion (73) is provided on the end corner of the outer frame (71) and on the side close to the heat insulation layer (2).

5. The boiler furnace wall structure according to claim 2, characterized in that: The outer end of the outer frame (71) is provided with a telescopic groove (8); The expansion groove (8) is used to compensate for the thermal expansion and contraction of the fire-resistant unit module (6) at high temperature and to reduce the structural stress between the fire-resistant unit modules (6) that are spliced ​​together.

6. The boiler furnace wall structure according to claim 5, characterized in that: The horizontal plate (721) is provided with a second expansion groove (9) that is distributed opposite to the first expansion groove (8).

7. The boiler furnace wall structure according to claim 1, characterized in that: Two disassembly units (72) are provided between the two adjacent fire-resistant unit modules (6) that are spliced ​​back to back.

Images