Membrane wall and insulation layer composite water-cooled hearth structure

Abstract

The utility model relates to water -cooled hearth structure technical field, and disclose a membrane type wall and heat insulation layer composite water -cooled hearth structure, including hearth, the inner wall of hearth is provided with water -cooled wall, the inside of water -cooled wall is provided with heat insulation layer, water -cooled pipe is arranged in the inner wall of hearth longitudinally, and the top end and the bottom end of several water -cooled pipes are fixed with upper pipe -through and lower pipe -through respectively, and the top end and the bottom end of water -cooled pipe are communicated, the both sides outer surfaces of water -cooled pipe are provided with connecting assembly, and the adjacent two water -cooled pipes are welded through connecting assembly. Through setting up the fin of water -cooled pipe both sides has the clamping block and corresponding card slot structure, in the welding process, the clamping block of welding one side fin is inserted into the card slot of corresponding fin one side, the positioning connection between fins is completed, then welding is carried out at the connecting place between fins, avoid shaking when welding between fins, increase the stability of welding process.

Description

Technical Field

[0001] This utility model relates to the technical field of water-cooled furnace structure, specifically a composite water-cooled furnace structure consisting of a membrane wall and an insulation layer. Background Technology

[0002] The furnace is the core component of a boiler or combustion equipment. Its main function is to provide space for fuel combustion and to achieve thermal energy conversion.

[0003] For example, Chinese Patent CN202020389139.0 discloses a water-cooled wall boiler furnace, which includes a boiler base, a furnace mechanism fixedly installed on the top surface of the boiler base, a grate fixedly installed at the bottom of the furnace mechanism, and a slag discharge port for easy removal of impurities below the grate. The furnace mechanism includes a furnace wall insulation layer, a membrane water-cooled wall tube fixedly installed on the inner side of the furnace wall insulation layer, and an outer protective plate of the furnace wall insulation layer fixedly installed on the outer side of the furnace wall insulation layer. The furnace wall insulation layer has a wedge-shaped groove penetrating the furnace wall insulation layer along the circumferential direction. The wedge-shaped groove allows the back-fire side of the membrane water-cooled wall tube to be connected to the outside. A movable wedge-shaped insulation door is fixedly installed on the wedge-shaped groove. This utility model is simple to operate and convenient to use. It can accurately measure the temperature of each pipe of the water-cooled wall tube even during boiler operation, reducing safety hazards and providing a guarantee for safe production in the factory. Traditional water-cooled wall installation uses fins to weld the water-cooled pipes together to form a wall. However, the fins are relatively thin, and the water-cooled pipes are tubular structures that are prone to shaking during the welding process, which affects the welding effect between the fins and increases the difficulty of installing the water-cooled pipes. Therefore, a membrane wall and insulation layer composite water-cooled furnace structure is proposed to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a composite water-cooled furnace structure with a membrane wall and insulation layer, which has advantages such as facilitating the welding of fins between water-cooled tubes and solving the problem of difficult welding between fins in traditional methods.

[0005] (II) Technical Solution To achieve the above-mentioned purpose of facilitating the welding of fins between water-cooled tubes, this utility model provides the following technical solution: a composite water-cooled furnace structure of membrane wall and insulation layer, including a furnace, wherein the inner wall of the furnace is provided with a water-cooled wall, and the interior of the water-cooled wall is provided with an insulation layer. Water-cooled pipes are arranged longitudinally and installed on the inner wall of the furnace. Several water-cooled pipes have upper and lower through pipes fixedly installed at their top and bottom ends, respectively, and the top and bottom ends of the water-cooled pipes are connected. Connecting components are provided on the outer surfaces of both sides of the water-cooled pipes, and adjacent water-cooled pipes are welded together through the connecting components.

[0006] Preferably, the insulation layer includes an insulating brick layer and a perlite protective concrete layer disposed inside the water-cooled wall, with the insulating brick layer located outside the perlite protective concrete layer, thereby increasing the insulation effect of the furnace and preventing heat loss.

[0007] Preferably, the inner wall of the water-cooled wall is paved with a brick layer, and the inner wall of the brick layer is provided with an installation groove for installing water-cooled pipes, which facilitates the installation of water-cooled pipes.

[0008] Preferably, the connecting assembly includes fins fixedly installed on both sides of the water-cooling pipe. One end of one fin is fixedly installed with a locking block, and one end of the other fin has a locking groove that matches the locking block. During the welding process, the locking block of the fin to be welded is inserted into the locking groove on the corresponding side of the fin to complete the positioning connection between the fins, and then welding is performed at the connection between the fins.

[0009] Preferably, the other end of the fin is integrally mounted with a corner bracket, and the fin is welded to the outer surface of the water-cooling pipe through the corner bracket. The corner bracket increases the welding area between one end of the fin and the water-cooling pipe, thereby increasing the stability of the fin welding.

[0010] Preferably, a protective plate is welded to the outer surface of the front end of the lower pipe, and a threaded groove is provided on the inner wall of the lower pipe. The internal threaded groove allows the rotating flow to carry away the bubbles in time, preventing them from accumulating on the pipe wall to form a "vapor film", ensuring continuous water flow cooling on the inner wall surface and avoiding local overheating.

[0011] (III) Beneficial Effects Compared with the prior art, this utility model provides a composite water-cooled furnace structure with membrane wall and insulation layer, which has the following beneficial effects: By setting locking blocks and corresponding slot structures on both sides of the water-cooling pipe, during the welding process, the locking block of the fin to be welded is inserted into the slot on the corresponding side of the fin to complete the positioning connection between the fins. Then, welding is performed at the connection between the fins to avoid shaking during welding and to increase the stability of the welding process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the water-cooled pipe of this utility model; Figure 3 This is a top view of the water-cooled pipe of this utility model.

[0013] In the diagram: 1. Furnace chamber; 11. Water-cooled wall; 12. Insulating brick layer; 13. Perlite protective concrete layer; 14. Brick layer; 2. Water-cooled pipe; 21. Top pipe; 22. Bottom pipe; 23. Threaded groove; 24. Protective plate; 25. Fin; 26. Angle bracket; 27. Locking block; 28. Locking groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 The present invention provides the following technical solution: a composite water-cooled furnace structure of membrane wall and insulation layer, including furnace 1, wherein the inner wall of the furnace 1 is provided with a water-cooled wall 11, and the interior of the water-cooled wall 11 is provided with an insulation layer. In this embodiment, the insulation layer includes a heat-insulating brick layer 12 and a perlite protective concrete layer 13 disposed inside the water-cooled wall 11, and the heat-insulating brick layer 12 is located outside the perlite protective concrete layer 13, which increases the heat insulation effect of the furnace 1 and prevents heat loss. The inner wall of the water-cooled wall 11 is covered with a brick layer 14, and the inner wall of the brick layer 14 is provided with an installation groove for installing the water-cooled pipe 2, which facilitates the installation of the water-cooled pipe 2. In this embodiment, water-cooled pipes 2 are arranged longitudinally and installed on the inner wall of furnace 1. The top and bottom ends of several water-cooled pipes 2 are respectively fixedly installed with upper through pipes 21 and lower through pipes 22, and the top and bottom ends of water-cooled pipes 2 are connected. Connecting components are provided on the outer surfaces of both sides of the water-cooled pipes 2, and adjacent water-cooled pipes 2 are welded together by connecting components.

[0016] The connecting assembly includes fins 25 fixedly installed on both sides of the water-cooling pipe 2. One end of one fin 25 is fixedly installed with a locking block 27, and one end of the other fin 25 is provided with a locking groove 28 that matches the locking block 27. During the welding process, the locking block 27 of the fin 25 to be welded is inserted into the locking groove 28 on the corresponding side of the fin 25 to complete the positioning connection between the fins 25. Then, welding is performed at the connection between the fins 25.

[0017] In this embodiment, the other end of the fin 25 is integrally mounted with a bracket 26, and the fin 25 is welded to the outer surface of the water-cooling pipe 2 through the bracket 26. The bracket 26 increases the welding area between one end of the fin 25 and the water-cooling pipe 2, thereby increasing the stability of the welding of the fin 25.

[0018] The lower pipe 22 has a protective plate 24 welded to the outer surface of its front end, and a threaded groove 23 is provided on the inner wall of the lower pipe 22. The internal threaded groove 23 can allow the rotating flow to carry away the bubbles in time, preventing them from accumulating on the pipe wall to form a "vapor film", ensuring continuous water flow cooling on the inner wall surface and avoiding local overheating.

[0019] The working principle of this embodiment is as follows: By setting the fins 25 on both sides of the water cooling pipe 2 with locking blocks 27 and corresponding locking slots 28, during the welding process, the locking block 27 of the fin 25 to be welded is inserted into the locking slot 28 on the corresponding side of the fin 25 to complete the positioning connection between the fins 25, and then welding is performed at the connection between the fins 25 to avoid shaking when welding between the fins 25 and increase the stability of the welding process. The protective plate 24 on the surface of the water-cooled pipe 2 is used to protect the water-cooled pipe 2 from contact with high-temperature flames. While protecting the water-cooled pipe 2, it also increases the heat preservation effect. The internal threaded groove 23 can make the rotating flow carry away the bubbles in time, preventing them from accumulating on the pipe wall to form a "vapor film", ensuring that there is continuous water flow cooling on the inner wall surface and avoiding local overheating. The inner wall of the furnace 1 is provided with an insulating brick layer 12 and a perlite protective concrete layer 13 to increase the heat insulation effect of the furnace 1 and prevent heat loss. The surface of the brick layer 14 is provided with an installation structure for installing the water cooling pipe 2, which facilitates the installation of the water cooling pipe 2.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite water-cooled furnace structure consisting of a membrane wall and an insulation layer, characterized in that, include: The furnace (1) has a water-cooled wall (11) on its inner wall and an insulation layer inside the water-cooled wall (11). Water-cooled pipes (2) are arranged longitudinally on the inner wall of the furnace (1). Several water-cooled pipes (2) have an upper pipe (21) and a lower pipe (22) fixedly installed at their top and bottom ends respectively. The top and bottom ends of the water-cooled pipes (2) are connected. Connecting components are provided on the outer surfaces of both sides of the water-cooled pipes (2). Adjacent water-cooled pipes (2) are welded together by connecting components.

2. The membrane wall and thermal shield composite water-cooled hearth structure according to claim 1, characterized in that: The insulation layer includes an insulating brick layer (12) and a perlite protective concrete layer (13) disposed inside the water-cooled wall (11), with the insulating brick layer (12) located outside the perlite protective concrete layer (13).

3. The membrane wall and refractory liner composite water-cooled hearth structure according to claim 1, wherein: The inner wall of the water-cooled wall (11) is covered with a brick layer (14), and the inner wall of the brick layer (14) is provided with an installation groove for installing the water-cooled pipe (2).

4. The membrane wall and refractory liner composite water-cooled hearth structure of claim 1, wherein: The connecting assembly includes fins (25) fixedly installed on both sides of the water cooling pipe (2). One end of one fin (25) is fixedly installed with a locking block (27), and one end of the other fin (25) is provided with a locking groove (28) that matches the locking block (27).

5. The membrane wall and thermal shield composite water-cooled hearth structure according to claim 4, wherein: The other end of the fin (25) is integrally mounted with a bracket (26), and the fin (25) is welded to the outer surface of the water cooling pipe (2) through the bracket (26).

6. The membrane wall and thermal shield composite water-cooled hearth structure as claimed in claim 1, wherein: The outer surface of the front end of the lower tube (22) is welded with a protective plate (24), and the inner wall of the lower tube (22) is provided with a threaded groove (23).

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