Heat exchange device of heat storage boiler

Abstract

The utility model discloses a heat exchange device of a heat storage boiler, which comprises a combustion chamber, a steam chamber is arranged on the combustion chamber, the steam chamber is communicated with the combustion chamber, an exhaust pipe is arranged at the top of the steam chamber, and at least one composite heat exchange structure is arranged in the steam chamber from top to bottom; the utility model relates to the technical field of boiler heat exchange devices, the heat exchange device of the heat storage boiler utilizes the combined type heat exchange structure to exchange heat, the combined type heat exchange structure adopts plate type heat exchange, the heat exchange efficiency is improved, and the heat exchange efficiency is improved. The heat exchange efficiency of plate type heat exchange is improved through the fins arranged in the air inlet direction of steam or hot air, heat absorption and phase change heat storage are conducted on the phase change heat storage materials through the containing hoppers on the combined type heat exchange structure, the phase change heat storage materials serve as heat exchange supplementation of the heat exchange plates, and meanwhile the situation that the fins make contact with the phase change heat storage materials and are inconvenient to separate for maintenance is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler heat exchange devices, in particular to a heat exchange device for a heat storage boiler. Background Art

[0002] In the application process of boilers, in order to improve the utilization rate of combustion, heat storage is usually used when the heat from the boiler overflows to increase the utilization efficiency of energy. At present, heat storage boilers mainly use fin structures or bare tube structures to improve heat exchange efficiency. However, in the process of combining this structure with the phase change heat storage body, since the phase change process of the phase change energy storage material is usually accompanied by the deformation of the phase change body, it is very easy to adhere to the fins and the gaps between the tube rows, which can easily cause the phase change material and the tube row structure to be difficult to separate, resulting in increased maintenance work in the later stage. In view of this, in-depth research was conducted on the above-mentioned problems, resulting in this case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a heat exchange device for a heat storage boiler, which solves the problems of the prior art.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a heat exchange device of a heat storage boiler, comprising a combustion chamber, a steam chamber is arranged on the combustion chamber, the steam chamber is connected to the combustion chamber, an exhaust pipe is arranged on the top of the steam chamber, and at least one composite heat exchange structure is arranged from top to bottom in the steam chamber;

[0005] The composite heat exchange structure includes a fixing seat, the steam chamber is provided with a fixing seat, a heat exchange plate is connected to the fixing seat, the heat exchange plate is a cavity shell, and a plurality of water inlet pipes and a plurality of water outlet pipes are correspondingly provided on both sides of the heat exchange plate;

[0006] A plurality of heat exchange fins are uniformly extended from the bottom of the heat exchange plate;

[0007] A containing groove is provided on the top of the heat exchange plate, an integrated containing bucket is placed in the containing groove, and the integrated containing bucket is filled with phase change heat storage material;

[0008] The integrated containing bucket is a rectangular shell structure with an opening on the top and a heat exchange enhancement component is arranged between the containing tank and the containing trough.

[0009] Preferably, the plurality of water inlet pipes and the plurality of water outlet pipes are connected via branch inlet pipes and branch outlet pipes, respectively.

[0010] Preferably, one side of the branch inlet pipe and the branch outlet pipe is connected to a main inlet pipe and a main outlet pipe.

[0011] Preferably, the inner wall surface of the integrated containing bucket is a smooth plane.

[0012] Preferably, the heat exchange enhancement component includes a plurality of heat exchange grooves, the inner top surface of the containing groove is provided with a plurality of heat exchange grooves in a unidirectional linear array, the bottom surface of the integrated containing bucket is provided with a plurality of heat exchange plates corresponding to the plurality of heat exchange grooves, and the plurality of heat exchange plates are inserted into the plurality of heat exchange grooves.

[0013] Preferably, the edge of the integrated containing bucket is connected to the top surface of the heat exchange plate by a plurality of screws or a plurality of pins. Beneficial Effects

[0014] The utility model provides a heat exchange device for a heat storage boiler. It has the following beneficial effects: the heat exchange device for the heat storage boiler uses a composite heat exchange structure for heat exchange, the composite heat exchange structure uses plate heat exchange, and uses a plurality of fins arranged toward the air intake direction of steam or hot gas to improve the heat exchange efficiency of the plate heat exchange, and the hopper on the composite heat exchange structure absorbs heat and stores heat through phase change to supplement the heat exchange of the heat exchange plate, while avoiding contact between the fins and the phase change heat storage material, which is inconvenient to separate for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a heat exchange device of a heat storage boiler described in the utility model.

[0016] Figure 2 It is a side structural schematic diagram of a heat exchange device of a heat storage boiler described in the utility model.

[0017] Figure 3 It is a partially enlarged structural schematic diagram of a heat exchange device of a heat storage boiler described in the utility model.

[0018] In the figure: 1. combustion chamber; 2. steam chamber; 3. exhaust pipe; 4. fixing seat; 5. heat exchange plate; 6. water inlet pipe; 7. water outlet pipe; 8. heat exchange fins; 9. containing tank; 10. integrated containing bucket; 11. phase change heat storage material; 12. branch inlet pipe; 13. branch outlet pipe; 14. main inlet pipe; 15. main outlet pipe; 16. heat exchange fins. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3The utility model provides an implementation scheme: In order to solve the problem that the finned tube row and the bare tube row of the existing heat storage boiler are easy to adhere to the phase change material during heat exchange, and it is difficult to disassemble and maintain, the application designs a heat exchange device for the heat storage boiler. The main body of the equipment is divided into a combustion chamber 1 and a steam chamber 2. The steam generated by the combustion chamber 1 flows through the steam chamber 2. There are no less than one composite heat exchange structure arranged from top to bottom in the steam chamber 2. The heat in the steam is fully absorbed and exchanged through the composite heat exchange structure, and the phase change material is stored in heat. An exhaust pipe 3 is arranged on the top of the steam chamber 2;

[0021] According to the instruction manual Figure 1-3 It can be seen that the above-mentioned composite heat exchange structure uses the fixing seat 4 as the installation position to fix the heat exchange plate 5. A plurality of heat exchange fins 8 are evenly extended from the bottom of the heat exchange plate 5 toward the side where steam enters, so as to improve the heat exchange capacity. A plurality of water inlet pipes 6 and a plurality of water outlet pipes 7 on both sides of the heat exchange plate 5 allow the hot water to flow through the heat exchange plate 5 to absorb the heat of the steam. A holding groove 9 is provided on the top of the heat exchange plate 5, and an integrated holding bucket 10 is placed in the holding groove 9. The integrated holding bucket 10 is used to hold a phase change heat storage material 11. The integrated holding bucket 10 is fixed in position by the holding groove 9, and the heat exchange between the phase change heat storage material 11 and the heat exchange plate 5 is realized. The phase change heat storage material 11 absorbs the heat of the steam, thereby phase changing and storing the heat, and supplies the heat to the hot water flowing through. The integrated holding bucket 10 is a rectangular shell structure with an opening on the top, and a heat exchange enhancement component is provided between the holding groove 9 to improve the heat exchange capacity.

[0022] As a preferred solution, further, the plurality of water inlet pipes 6 and the plurality of water outlet pipes 7 are connected via branch inlet pipes 12 and branch outlet pipes 13 respectively.

[0023] As a preferred solution, further, one side of the branch inlet pipe 12 and the branch outlet pipe 13 is connected to a main inlet pipe 14 and a main outlet pipe 15, and the main inlet pipe 14 supplies water to several water inlet pipes 6 through the branch inlet pipe 12, and several water outlet pipes 7 converge through the branch outlet pipe 13 and are discharged from the main outlet pipe 15.

[0024] As a preferred solution, further, the inner wall surface of the integrated containing bucket 10 is a smooth plane to prevent the phase change heat storage material 11 from being inconveniently separated from the integrated containing bucket 10 .

[0025] As a preferred solution, further, according to the attached description Figure 1-3 It can be seen that the above-mentioned heat exchange enhancement component includes a plurality of heat exchange grooves, and the inner top surface of the containing groove 9 is provided with a plurality of heat exchange grooves in a unidirectional linear array, and the bottom surface of the integrated containing bucket 10 is provided with a plurality of heat exchange plates 16 corresponding to the plurality of heat exchange grooves, and the plurality of heat exchange plates 16 are inserted into the plurality of heat exchange grooves. By the fit between the heat exchange plates 16 and the heat exchange grooves, the contact area between the integrated containing bucket 10 and the heat exchange plate 5 is increased, thereby improving the heat exchange efficiency.

[0026] As a preferred solution, further, the edge of the integrated containing bucket 10 is connected to the top surface of the heat exchange plate 5 by a plurality of screws or a plurality of pins.

[0027] From the above, it can be generally known that the heat exchange device of the heat storage boiler uses a composite heat exchange structure for heat exchange. The composite heat exchange structure adopts plate heat exchange, and uses a number of fins arranged in the air intake direction of steam or hot air to improve the heat exchange efficiency of the plate heat exchange. The phase change heat storage material 11 absorbs heat and stores heat through phase change through the containing bucket on the composite heat exchange structure, which serves as a heat exchange supplement for the heat exchange plate 5. At the same time, the contact between the fins and the phase change heat storage material 11 is avoided, which is inconvenient to separate for maintenance.

[0028] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heat exchange device for a heat storage boiler, comprising a combustion chamber (1), a steam chamber (2) being arranged on the combustion chamber (1), the steam chamber (2) being connected to the combustion chamber (1), an exhaust pipe (3) being arranged on the top of the steam chamber (2), characterized in that: At least one composite heat exchange structure is arranged from top to bottom in the steam chamber (2); The composite heat exchange structure comprises a fixing seat (4), the fixing seat (4) being arranged inside the steam chamber (2), a heat exchange plate (5) being connected to the fixing seat (4), the heat exchange plate (5) being a hollow shell, and a plurality of water inlet pipes (6) and a plurality of water outlet pipes (7) being arranged on both sides of the heat exchange plate (5); A plurality of heat exchange fins (8) evenly extend from the bottom of the heat exchange plate (5); A containing groove (9) is provided on the top of the heat exchange plate (5), an integrated containing bucket (10) is placed in the containing groove (9), and the integrated containing bucket (10) is filled with phase change heat storage material (11); The integrated containing bucket (10) is a rectangular shell structure with an opening at the top, and a heat exchange enhancement component is provided between the containing trough (9).

2. The heat exchange device of a thermal storage boiler according to claim 1, characterized in that: The plurality of water inlet pipes (6) and the plurality of water outlet pipes (7) are connected via branch inlet pipes (12) and branch outlet pipes (13), respectively.

3. The heat exchange device of a heat storage boiler according to claim 2, characterized in that: One side of the branch inlet pipe (12) and the branch outlet pipe (13) is connected to a main inlet pipe (14) and a main outlet pipe (15).

4. The heat exchange device of a heat storage boiler according to claim 3, characterized in that: The inner wall surface of the integrated containing bucket (10) is a smooth plane.

5. The heat exchange device of a heat storage boiler according to claim 4, characterized in that: The heat exchange enhancement component comprises a plurality of heat exchange grooves, the inner top surface of the containing groove (9) is provided with a plurality of heat exchange grooves in a unidirectional linear array, the bottom surface of the integrated containing bucket (10) is provided with a plurality of heat exchange fins (16) corresponding to the plurality of heat exchange grooves, and the plurality of heat exchange fins (16) are inserted into the plurality of heat exchange grooves.

6. The heat exchange device of a thermal storage boiler according to claim 5, characterized in that: The edge of the integrated containing bucket (10) is connected to the top surface of the heat exchange plate (5) via a plurality of screws or a plurality of pins.

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