Shell-and-tube air-cooled heat exchanger

Abstract

The utility model discloses a kind of tube-in-tube air-cooled heat exchangers, it belongs to heat exchanger field, its two layers X-axis heat exchange tube and the layer Y-axis heat exchange tube in it, form three layers heat exchange structure, can compress the height of " layer " direction on the arrangement type of ordinary tube-in-tube air-cooled heat exchanger, and then improve the " density " of heat exchange tube. It mainly includes symmetrically arranged X-axis cavity and symmetrically arranged Y-axis cavity, symmetrically arranged X-axis cavity and symmetrically arranged Y-axis cavity form frame structure, two X-axis cavities are connected by the upper and lower layers several X-axis heat exchange tubes, two X-axis cavities are communicated with two layers X-axis heat exchange tube, two Y-axis cavities are connected by several Y-axis heat exchange tubes, two Y-axis cavities are communicated with Y-axis heat exchange tube, several Y-axis heat exchange tubes are located between the upper and lower layers several X-axis heat exchange tubes, X-axis heat exchange tube and Y-axis heat exchange tube are perpendicular to each other arrangement. The utility model is mainly used for tube-in-tube air-cooled heat exchanger.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and more specifically, to a shell-and-tube air-cooled heat exchanger. Background Technology

[0002] Shell-and-tube air-cooled heat exchangers play a vital role in industrial applications. Their core working principle involves efficient heat transfer through fluid flow inside and outside the tubes. Customized designs are available to meet the specific heat transfer requirements of different industries and processes. Current technological development in shell-and-tube air-cooled heat exchangers focuses primarily on the performance of the heat exchange tubes, with limited structural improvements. This results in a limited heat exchange area per unit volume, leading to relatively poor heat exchange efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a shell-and-tube air-cooled heat exchanger, which has two layers of X-axis heat exchange tubes and a middle layer of Y-axis heat exchange tubes to form a three-layer heat exchange structure. Compared with the arrangement of ordinary shell-and-tube air-cooled heat exchangers, it can compress the height in the "layer" direction, thereby increasing the "density" of the heat exchange tubes; the staggered stacking allows the heat exchange tubes to be arranged in contact, and the heat exchange tubes can also support each other.

[0004] This utility model is achieved through the following technical solution: A shell-and-tube air-cooled heat exchanger includes symmetrically arranged X-axis cavities and symmetrically arranged Y-axis cavities, which form a frame structure. The two X-axis cavities are connected by upper and lower layers of X-axis heat exchange tubes, and the two X-axis cavities are in communication with the two layers of X-axis heat exchange tubes. The two Y-axis cavities are connected by several Y-axis heat exchange tubes, and the two Y-axis cavities are in communication with the Y-axis heat exchange tubes. The several Y-axis heat exchange tubes are located between the upper and lower layers of several X-axis heat exchange tubes. The X-axis heat exchange tubes and Y-axis heat exchange tubes are arranged perpendicular to each other. Both the X-axis cavities and the Y-axis cavities are connected by connecting pipes, and the ends of the connecting pipes are provided with flanges.

[0005] Furthermore, the X-axis cavity includes an X-axis cover plate, an X-axis cap plate, and an X-axis tube plate. The X-axis cover plate is welded to the X-axis tube plate, and X-axis cap plates are welded to both ends of the X-axis cover plate and the X-axis tube plate to form a sealed cavity. The Y-axis cavity includes a Y-axis cover plate, a Y-axis cap plate, and a Y-axis tube plate. The Y-axis cover plate is welded to the Y-axis tube plate, and Y-axis cap plates are welded to both ends of the Y-axis cover plate and the Y-axis tube plate to form a sealed cavity. Adjacent X-axis tube plates and Y-axis tube plates are welded to each other.

[0006] Furthermore, the connecting pipes include X-axis connecting pipes and Y-axis connecting pipes, and the flanges include X-axis pipe flanges and Y-axis pipe flanges. The two X-axis connecting pipes are respectively welded to the X-axis cover plates on both sides, and the ends of the X-axis connecting pipes are provided with X-axis pipe flanges; the two Y-axis connecting pipes are respectively welded to the Y-axis cover plates on both sides, and the ends of the Y-axis connecting pipes are provided with Y-axis pipe flanges.

[0007] Furthermore, both the X-axis cover plate and the Y-axis cover plate are arc-shaped curved plates, both the X-axis cover plate and the Y-axis cover plate are semi-circular plates, and both the X-axis cavity and the Y-axis cavity are semi-cylindrical cavity structures.

[0008] Compared with the prior art, the beneficial effects of this utility model are: 1. The X-axis heat exchange tubes and Y-axis heat exchange tubes are arranged at 90° and stacked without gaps between them. The two layers of X-axis heat exchange tubes and the middle layer of Y-axis heat exchange tubes form a three-layer heat exchange structure. Compared with the arrangement of ordinary shell and tube air-cooled heat exchangers, it can compress the height in the "layer" direction, thereby increasing the "density" of the heat exchange tubes. The staggered stacking allows the heat exchange tubes to be arranged in contact, and the heat exchange tubes can also support each other.

[0009] 2. The structure is simple, allowing more heat exchange tubes to be arranged in a limited space, thus achieving a substantial increase in heat exchange area per unit volume. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a cross-sectional view of the BB section of this utility model; Figure 4 This is a cross-sectional view of the CC section of this utility model.

[0011] In the diagram: 1. X-axis tube flange; 2. X-axis connecting pipe; 3. X-axis cover plate; 4. X-axis cover plate; 5. X-axis tube sheet; 6. X-axis heat exchange tube; 7. Y-axis tube flange; 8. Y-axis connecting pipe; 9. Y-axis cover plate; 10. Y-axis cover plate; 11. Y-axis tube sheet; 12. Y-axis heat exchange tube. Detailed Implementation

[0012] The present invention will now be further described.

[0013] like Figure 1 – Figure 4As shown in the embodiment, a shell-and-tube air-cooled heat exchanger includes symmetrically arranged X-axis cavities and symmetrically arranged Y-axis cavities, which form a frame structure. The two X-axis cavities are connected by upper and lower layers of several X-axis heat exchange tubes 6, and the two X-axis cavities are in communication with the two layers of X-axis heat exchange tubes 6. The two Y-axis cavities are connected by several Y-axis heat exchange tubes 12, and the two Y-axis cavities are in communication with the Y-axis heat exchange tubes 12. The several Y-axis heat exchange tubes 12 are located between the upper and lower layers of several X-axis heat exchange tubes 6. The X-axis heat exchange tubes 6 and the Y-axis heat exchange tubes 12 are arranged perpendicular to each other. Both the X-axis cavities and the Y-axis cavities are connected by connecting pipes, and the ends of the connecting pipes are provided with flanges.

[0014] Specifically, the X-axis heat exchange tubes 6 and Y-axis heat exchange tubes 12 are arranged at 90° and stacked without gaps between them. The two layers of X-axis heat exchange tubes 6 and the intermediate layer of Y-axis heat exchange tubes 12 form a three-layer heat exchange structure. Compared with the arrangement of ordinary shell-and-tube air-cooled heat exchangers, this arrangement can compress the height in the "layer" direction, thereby increasing the "density" of the heat exchange tubes. The staggered stacking allows the heat exchange tubes to be arranged in contact, and the heat exchange tubes can also support each other. By arranging more heat exchange tubes in a limited space, a substantial increase in heat exchange area per unit volume is achieved.

[0015] The X-axis cavity includes an X-axis cover plate 3, an X-axis cover plate 4, and an X-axis tube plate 5. The X-axis cover plate 3 is welded to the X-axis tube plate 5, and the X-axis cover plate 4 is welded to both ends of the X-axis cover plate 3 and the X-axis tube plate 5 to form a sealed cavity. The Y-axis cavity includes a Y-axis cover plate 9, a Y-axis cover plate 10, and a Y-axis tube plate 11. The Y-axis cover plate 9 is welded to the Y-axis tube plate 11, and the Y-axis cover plate 10 is welded to both ends of the Y-axis cover plate 9 and the Y-axis tube plate 11 to form a sealed cavity. Adjacent X-axis tube plates 5 and Y-axis tube plates 11 are welded to each other.

[0016] Specifically, the X-axis tube sheet 5 is welded to the X-axis heat exchange tube 6, and the Y-axis tube sheet 11 is welded to the Y-axis heat exchange tube 12, forming a rectangular heat exchange frame structure.

[0017] The connecting pipes include an X-axis connecting pipe 2 and a Y-axis connecting pipe 8, and the flanges include an X-axis pipe flange 1 and a Y-axis pipe flange 7. The two X-axis connecting pipes 2 are respectively welded to the two X-axis cover plates 3 on both sides, and the ends of the X-axis connecting pipes 2 are provided with X-axis pipe flanges 1; the two Y-axis connecting pipes 8 are respectively welded to the two Y-axis cover plates 9 on both sides, and the ends of the Y-axis connecting pipes 8 are provided with Y-axis pipe flanges 7.

[0018] The X-axis cover plate 3 and Y-axis cover plate 9 are both arc-shaped curved plates, the X-axis cover plate 4 and Y-axis cover plate 10 are both semi-circular plates, and the X-axis cavity and Y-axis cavity are both semi-cylindrical cavity structures.

[0019] In use, ordinary ventilation equipment is installed on the outside of the X-axis heat exchange tube 6 and the Y-axis heat exchange tube 12 so that the medium flowing along the X-axis and Y-axis can complete the heat transfer with the outside air through the X-axis heat exchange tube 6 and the Y-axis heat exchange tube 12.

Claims

1. A shell-and-tube air-cooled heat exchanger, comprising symmetrically arranged X-axis cavities and symmetrically arranged Y-axis cavities, characterized in that: The symmetrically arranged X-axis cavity and the symmetrically arranged Y-axis cavity form a frame structure. The two X-axis cavities are connected by several X-axis heat exchange tubes (6) in two upper and lower layers. The two X-axis cavities are connected to the two layers of X-axis heat exchange tubes (6). The two Y-axis cavities are connected by several Y-axis heat exchange tubes (12). The two Y-axis cavities are connected to the Y-axis heat exchange tubes (12). The several Y-axis heat exchange tubes (12) are located between the several X-axis heat exchange tubes (6) in two upper and lower layers. The X-axis heat exchange tubes (6) and the Y-axis heat exchange tubes (12) are arranged perpendicular to each other. Both the X-axis cavity and the Y-axis cavity are connected by pipes, and the ends of the pipes are provided with flanges.

2. The shell-and-tube air-cooled heat exchanger according to claim 1, characterized in that: The X-axis cavity includes an X-axis cover plate (3), an X-axis cover plate (4), and an X-axis tube plate (5). The X-axis cover plate (3) is welded to the X-axis tube plate (5), and the X-axis cover plate (3) and the X-axis tube plate (5) are welded to both ends with X-axis cover plates (4). The Y-axis cavity includes a Y-axis cover plate (9), a Y-axis cover plate (10), and a Y-axis tube plate (11). The Y-axis cover plate (9) is welded to the Y-axis tube plate (11), and the Y-axis cover plate (9) and the Y-axis tube plate (11) are welded to both ends with Y-axis cover plates (10). Adjacent X-axis tube plates (5) and Y-axis tube plates (11) are welded to each other.

3. The shell-and-tube air-cooled heat exchanger according to claim 2, characterized in that: The connecting pipes include an X-axis connecting pipe (2) and a Y-axis connecting pipe (8), and the flanges include an X-axis pipe flange (1) and a Y-axis pipe flange (7). The two X-axis connecting pipes (2) are respectively welded to the two X-axis cover plates (3) on both sides, and the ends of the X-axis connecting pipes (2) are provided with X-axis pipe flanges (1); the two Y-axis connecting pipes (8) are respectively welded to the two Y-axis cover plates (9) on both sides, and the ends of the Y-axis connecting pipes (8) are provided with Y-axis pipe flanges (7).

4. The shell-and-tube air-cooled heat exchanger according to claim 2, characterized in that: The X-axis cover plate (3) and Y-axis cover plate (9) are both arc-shaped curved plates, the X-axis cover plate (4) and Y-axis cover plate (10) are both semi-circular plates, and the X-axis cavity and Y-axis cavity are both semi-cylindrical cavity structures.

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