A structure for improving the assembly resistance of a shell-and-tube heat exchanger with baffles

Abstract

This utility model discloses a structure for improving the assembly resistance of a shell-and-tube heat exchanger with baffles. It relates to the field of assembly technology for shell-and-tube heat exchangers and aims to solve the problem that, during the assembly of existing shell-and-tube heat exchangers, the inner wall of the shell itself has a certain degree of roundness deformation, and the weld seams of the inner wall often produce small protrusions or local deformations, causing the baffles to get stuck near certain defects, thus hindering assembly smoothness. The key technical points include a shell, inside which a heat exchanger tube bundle is installed. The heat exchanger tube bundle includes multiple baffles, and roller supports are installed on the outer surface of some of the baffles. The roller supports and the outer surface of the baffles are both provided with corresponding support mounting holes. This effectively addresses the protrusions and defects on the inner wall of the shell, effectively improves the overall assembly smoothness, and avoids structural damage during assembly.

Description

Technical Field

[0001] This utility model relates to the field of assembly technology of tubular heat exchangers, and in particular to a structure for improving the assembly resistance of shell-and-tube heat exchangers with baffles. Background Technology

[0002] A tube heat exchanger with baffles is a highly efficient heat transfer device widely used in chemical, petroleum, and power industries. Its core structure consists of a shell, tube bundle, baffles, and other components. One fluid flows inside the tube bundle, while another fluid to be exchanged flows in the space between the shell and the tube bundle.

[0003] During assembly, existing tubular heat exchangers suffer from roundness deformation of the inner wall of the shell to some extent, and the welds on the inner wall often produce small protrusions or local deformations, causing the baffle plate to get stuck near certain defects, thus requiring improvement in assembly smoothness. Utility Model Content

[0004] The purpose of this invention is to provide a structure that improves the assembly resistance of a shell-and-tube heat exchanger with baffles, effectively addressing protrusions and defects on the inner wall of the shell, improving overall assembly smoothness, and preventing structural damage during assembly.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A structure for improving the assembly resistance of a shell-and-tube heat exchanger with baffles includes a shell, inside which a heat exchanger tube bundle is installed. The heat exchanger tube bundle includes multiple baffles. Roller supports are installed on the outer surface of some of the baffles. The roller supports and the outer surface of the baffles are provided with corresponding support mounting holes. Bolts and nuts are installed inside the support mounting holes. The roller supports are fixed to the baffles by bolts and nuts. A roller is rotatably installed in the rotation position of the roller supports.

[0007] By adopting the above technical solution, the smoothness of inserting or removing the heat exchanger tube bundle into the tube shell is improved, thereby improving the smoothness of the overall assembly and avoiding structural damage during the assembly process.

[0008] Furthermore, a portion of the roller protrudes beyond the outermost edge of the baffle plate, and the distance by which the roller protrudes beyond the outermost edge of the baffle plate is consistent with the gap distance between the heat exchanger tube bundle and the inner wall of the tube shell. The rolling surface of the roller is in contact with the inner wall of the tube shell.

[0009] By adopting the above technical solution, the position of the heat exchanger tube bundle inside the tube shell is kept stable.

[0010] Furthermore, two roller supports are mounted on the same baffle plate, and the two roller supports are symmetrically distributed with respect to the vertical midline of the heat exchanger tube bundle.

[0011] By adopting the above technical solution, the stability of the roller's rolling is ensured.

[0012] Furthermore, chamfers are provided at the edges of both outer surfaces of the baffle plate.

[0013] By adopting the above technical solutions, we can further address the protruding defects on the inner wall of the tube shell.

[0014] Furthermore, the heat exchanger tube bundle also includes multiple screws, which pass through through holes on the outer surface of the baffle plate. Multiple limiting nuts are threaded onto the external threads of the screws. Each baffle plate corresponds to two limiting nuts on the same screw, and the two limiting nuts are distributed on both sides of the baffle plate.

[0015] By adopting the above technical solution, the position of each baffle plate is kept stable.

[0016] Furthermore, the heat exchanger tube bundle also includes heat exchange tubes that pass through mounting holes on the outer surface of the baffle plate.

[0017] By adopting the above technical solution, the heat exchanger is able to perform effective heat exchange operations.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. This utility model, by installing a roller bracket on the baffle plate and rotating the roller within the rotation position of the roller bracket, allows for convenient movement of the heat exchanger tube bundle when it is installed into the tube shell. This changes the traditional sliding friction between the heat exchanger tube bundle and the tube shell to rolling friction, improving the convenience of the heat exchanger tube bundle entering or exiting the tube shell, and avoiding the baffle plate getting stuck at the protruding position during the tube shell welding process. This improves the smoothness of assembly and avoids structural damage during the assembly process.

[0020] 2. By thickening the baffle plate and chamfering both edges of the baffle plate, this utility model can guide the heat exchanger tube bundle when it is pushed into or pulled out of the tube shell, in the face of deformation and small protrusions of the inner wall of the tube shell. This allows the heat exchanger tube bundle to smoothly pass through the small imperfections in the tube shell during the assembly process by utilizing the runout tolerance as a whole, and the overall assembly smoothness is further improved. Attached Figure Description

[0021] Figure 1 This is a first-view perspective view of the three-dimensional structure of this utility model;

[0022] Figure 2 This is a second perspective view of the three-dimensional structure of this utility model;

[0023] Figure 3 This is the front view of the present invention;

[0024] Figure 4 This utility model Figure 3 Sectional view at point AA;

[0025] Figure 5 This utility model Figure 3 Enlarged view at point X;

[0026] Figure 6 This is a first-view view of the assembly of this utility model;

[0027] Figure 7 This is a second-view view of the assembly of this utility model.

[0028] In the diagram: 1. Screw; 2. Baffle plate; 3. Limit nut; 4. Heat exchange tube; 5. Roller bracket; 6. Roller; 7. Bracket mounting hole; 8. Chamfer; 9. Tube shell; 10. Heat exchanger tube bundle. Detailed Implementation

[0029] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6A structure for improving the assembly resistance of a shell-and-tube heat exchanger with baffles includes a shell 9, inside which a heat exchanger tube bundle 10 is installed. The heat exchanger tube bundle 10 includes multiple baffles 2. Roller supports 5 are installed on the outer surface of some of the baffles 2. Corresponding mounting holes 7 are provided on the outer surfaces of both the roller supports 5 and the baffles 2. Bolts and nuts are installed inside the mounting holes 7. The roller supports 5 are fixed to the baffles 2 by bolts and nuts. A roller 6 is rotatably mounted within the rotating part of the roller supports 5. A portion of the roller 6 protrudes beyond the outermost edge of the baffle 2. The distance by which the roller 6 protrudes beyond the outermost edge of the baffle 2 is the same as the gap distance between the heat exchanger tube bundle 10 and the inner wall of the shell 9. The moving surface is attached to the inner wall of the tube shell 9. Two roller supports 5 are installed on the same baffle 2, and the two roller supports 5 are symmetrically distributed with respect to the vertical midpoint of the heat exchanger tube bundle 10. By installing roller supports 5 on the baffle 2 and rotating rollers 6 within the rotation position of the roller supports 5, the heat exchanger tube bundle 10 can be easily moved using rollers 6 when it is installed into the tube shell 9. This changes the traditional sliding friction between the heat exchanger tube bundle 10 and the tube shell 9 to rolling friction, improving the convenience of the heat exchanger tube bundle 10 entering or exiting the tube shell 9, and avoiding the baffle 2 getting stuck at the protrusion position that occurs during the welding of the tube shell 9. This improves the smoothness of assembly and avoids structural damage during the assembly process.

[0031] Reference Figure 5 , Figure 7 The baffle 2 has chamfers 8 on both sides of its outer surface to thicken it. By thickening the baffle 2 and chamfering the edges on both sides, the chamfers 8 can guide the heat exchanger tube bundle 10 when it is pushed into or pulled out of the tube shell 9, and when it encounters deformation or small protrusions in the inner wall of the tube shell 9. This allows the heat exchanger tube bundle 10 to smoothly pass through the small imperfections in the tube shell 9 by utilizing the runout tolerance, thus further improving the overall assembly smoothness.

[0032] Reference Figure 1 , Figure 2 , Figure 3 The heat exchanger tube bundle 10 also includes multiple screws 1, which pass through through holes on the outer surface of the baffle 2. Multiple limiting nuts 3 are threaded onto the external threads of the screws 1. Each baffle 2 corresponds to two limiting nuts 3 on the same screw 1, and the two limiting nuts 3 are distributed on both sides of the baffle 2. The heat exchanger tube bundle 10 also includes heat exchange tubes 4, which pass through mounting holes on the outer surface of the baffle 2. The limiting nuts 3 can be used to firmly install and fix the baffle 2 onto the screws 1, ensuring the stability of each structure on the heat exchanger tube bundle 10.

[0033] Working principle: In use, the heat exchanger tube bundle 10 is first assembled. Then, the roller bracket 5 is installed on the corresponding baffle 2 using bolts and nuts. Next, the roller 6 is rotatably installed in the rotating mounting position of the roller bracket 5. At this time, the assembled heat exchanger tube bundle 10 can be installed into the tube shell 9. The roller 6 facilitates easy movement when installing the heat exchanger tube bundle 10 into the tube shell 9, changing the traditional sliding friction between the heat exchanger tube bundle 10 and the tube shell 9 to rolling friction. This improves the convenience of the heat exchanger tube bundle 10 entering or exiting the tube shell 9 and avoids... The baffle 2 is no longer needed to be stuck at the protrusions that occur during the welding of the tube shell 9, which improves the smoothness of assembly and avoids structural damage during assembly. Furthermore, by thickening the baffle 2 and chamfering the edges of both sides of the baffle 2, the chamfered edge 8 can guide the heat exchanger tube bundle 10 when it is pushed into or pulled out of the tube shell 9, in the face of deformation and minor protrusions of the inner wall of the tube shell 9. This allows the heat exchanger tube bundle 10 to smoothly pass through minor imperfections in the tube shell 9 by utilizing the runout tolerance as a whole during assembly, further improving the overall assembly smoothness.

[0034] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A structure for improving assembly resistance of a shell-and-tube heat exchanger with baffles, comprising a tube shell (9), characterized in that: The heat exchanger tube bundle (10) is installed inside the tube shell (9). The heat exchanger tube bundle (10) includes multiple baffles (2). Roller brackets (5) are installed on the outer surface of some of the baffles (2). The roller brackets (5) and the outer surface of the baffles (2) are provided with bracket mounting holes (7) with corresponding positions. Bolts and nuts are installed inside the bracket mounting holes (7). The roller brackets (5) and the baffles (2) are fixed together by bolts and nuts. Rollers (6) are rotatably installed in the rotation position of the roller brackets (5).

2. The structure for improving assembly resistance of a tube-in-shell heat exchanger with baffles according to claim 1, characterized in that: Part of the roller (6) protrudes from the outermost edge of the baffle plate (2). The distance by which the roller (6) protrudes from the outermost edge of the baffle plate (2) is consistent with the gap distance between the heat exchanger tube bundle (10) and the inner wall of the tube shell (9). The rolling surface of the roller (6) is in contact with the inner wall of the tube shell (9).

3. The structure for improving the assembly resistance of a shell-and-tube heat exchanger with baffles according to claim 1, characterized in that: Two roller supports (5) are installed on the same baffle plate (2), and the two roller supports (5) are symmetrically distributed with respect to the vertical midpoint of the heat exchanger tube bundle (10).

4. The structure for improving assembly resistance of a tube-in-shell heat exchanger with baffles according to claim 1, characterized in that: The baffle (2) has chamfers (8) on the edges of both outer surfaces.

5. The structure for improving assembly resistance of a tube-in-shell heat exchanger with baffles according to claim 1, characterized in that: The heat exchanger tube bundle (10) also includes multiple screws (1), which pass through through holes on the outer surface of the baffle (2). Multiple limiting nuts (3) are threaded onto the external threads of the screws (1). Each baffle (2) corresponds to two limiting nuts (3) on the same screw (1), and the two limiting nuts (3) are distributed on both sides of the baffle (2).

6. The structure for improving assembly resistance of a tube-in-shell heat exchanger with baffles according to claim 1, characterized in that: The heat exchanger tube bundle (10) also includes heat exchange tubes (4) which pass through mounting holes on the outer surface of the baffle plate (2).

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