Tube heat exchanger baffle

Abstract

The utility model belongs to the technical field of column tube heat exchanger, especially a column tube heat exchanger baffle, including column tube heat exchanger body, the surface fixed mounting of column tube heat exchanger body has the protection shell, the inner wall fixed mounting of protection shell has the baffle, the surface of protection shell is opened the pipe hole, the surface of baffle is opened the flow guide hole, the side fixed mounting of protection shell has the flanging lug, the side of baffle is opened the flow guide groove. Fluid flows in the column tube heat exchanger body in the process, fluid will be guided by the flow guide groove of baffle one side, make fluid flow to both sides, and flow to the flow guide hole opened, reduce the stagnation zone, optimize fluid flow direction, and the drag reduction hole of water drop shape can reduce the resistance of fluid, reduce the generation of vortex, and reduce local resistance, make the flow velocity distribution more uniform, avoid fluid frequently changing direction, improve the heat exchange area, guarantee column tube heat exchanger heat exchange efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of shell and tube heat exchangers, and specifically relates to a baffle plate for a shell and tube heat exchanger. Background Technology

[0002] Shell-and-tube heat exchangers are the most widely used type of heat exchanger in chemical and alcohol production. They mainly consist of a shell, tube sheet, heat exchange tubes, end caps, and baffles. The required materials can be ordinary carbon steel, copper, or stainless steel. During heat exchange, one fluid enters through the connecting pipe at the end cap, flows through the tubes, and exits through the outlet pipe at the other end of the end cap; this is called the tube side. The other fluid enters through a connecting pipe in the shell and exits through another connecting pipe on the shell; this is called the shell side. Shell-and-tube heat exchangers have a relatively simple, compact structure and are inexpensive, but the outside of the tubes cannot be mechanically cleaned. In this type of heat exchanger, the tube bundle is connected to the tube sheet, which is welded to both ends of the shell and connected to a top cover. The top cover and the shell are equipped with fluid inlet and outlet pipes. A series of baffles perpendicular to the tube bundle are usually installed outside the tubes. Simultaneously, the connections between the tubes and the tube sheet to the shell are rigid, while the fluids inside and outside the tubes are at two different temperatures. Therefore, when the temperature difference between the tube wall and the shell wall is large, the difference in thermal expansion between the two generates a large thermal stress, which can cause the tube to bend or detach from the tube sheet, or even damage the heat exchanger. The baffle is an important component of the shell and tube heat exchanger. In the current baffle, the fluid tends to form a stagnation zone at the edge of the baffle during use, causing the fluid to frequently change direction, reducing the heat exchange area and affecting the heat exchange efficiency of the shell and tube heat exchanger. Therefore, a baffle for the shell and tube heat exchanger is needed. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides a baffle plate for a shell-and-tube heat exchanger, which solves the problem that in the current baffle plate, the fluid tends to form a stagnation zone at the edge of the baffle plate during use, causing the fluid to frequently change direction, reducing the heat exchange area, and affecting the heat exchange efficiency of the shell-and-tube heat exchanger.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a baffle plate for a shell-and-tube heat exchanger, comprising a shell-and-tube heat exchanger body, a protective shell fixedly installed on the surface of the shell-and-tube heat exchanger body, a baffle plate fixedly installed on the inner wall of the protective shell, pipe holes opened on the surface of the protective shell, flow guide holes opened on the surface of the baffle plate, a flanged protrusion fixedly installed on one side of the protective shell, a flow guide groove opened on one side of the baffle plate, drag reduction holes opened on the surface of the baffle plate, a mark fixedly installed on the other side of the baffle plate, and reinforcing ribs fixedly installed on the inner wall of the baffle plate.

[0005] Preferably, the lower surface of the shell-and-tube heat exchanger body is fixedly mounted with mounting legs, and the surface of the mounting legs is provided with mounting grooves.

[0006] Preferably, the baffle plate is made of stainless steel and is disc-shaped.

[0007] Preferably, the drag-reducing holes are teardrop-shaped, and a plurality of drag-reducing holes are provided.

[0008] Preferably, the guide channels are arranged in an array.

[0009] Preferably, the flange protrusion is located on one side of the tube hole, and the height of the flange protrusion is five millimeters.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] During the flow of fluid within the shell-and-tube heat exchanger, the fluid is guided by the flow channels on one side of the baffle plate, causing the fluid to flow to both sides and through the flow guide holes. This reduces stagnation areas, optimizes the fluid flow direction, and the teardrop-shaped drag-reducing holes can reduce fluid resistance, decrease the generation of eddies, and reduce local resistance, resulting in a more uniform flow velocity distribution. This avoids frequent changes in fluid direction, increases the heat exchange area, and ensures the heat exchange efficiency of the shell-and-tube heat exchanger. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the baffle plate of this utility model;

[0015] Figure 3 This is a second three-dimensional structural diagram of the baffle plate of this utility model;

[0016] Figure 4 This is a three-dimensional sectional view of the baffle plate of this utility model.

[0017] In the figure: 1. Shell and tube heat exchanger body; 2. Protective shell; 3. Mounting leg; 4. Mounting groove; 5. Baffle plate; 6. Tube hole; 7. Guide hole; 8. Flanged protrusion; 9. Guide groove; 10. Drag reduction hole; 11. Marking; 12. Reinforcing rib. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1-4 The present invention provides the following technical solution: a baffle plate for a shell-and-tube heat exchanger, comprising a shell-and-tube heat exchanger body 1, a protective shell 2 fixedly installed on the surface of the shell-and-tube heat exchanger body 1, a baffle plate 5 fixedly installed on the inner wall of the protective shell 2, a pipe hole 6 opened on the surface of the protective shell 2, a guide hole 7 opened on the surface of the baffle plate 5, a flanged protrusion 8 fixedly installed on one side of the protective shell 2, a guide groove 9 opened on one side of the baffle plate 5, a drag-reducing hole 10 opened on the surface of the baffle plate 5, a mark 11 fixedly installed on the other side of the baffle plate 5, and a reinforcing rib 12 fixedly installed on the inner wall of the baffle plate 5.

[0020] During operation, after the fluid enters the shell-and-tube heat exchanger body 1, it flows through the baffles 5 and is guided by the guide channels 9 to flow to both sides and through the guide holes 7, reducing stagnation areas and optimizing fluid flow direction. Furthermore, the teardrop-shaped drag-reducing holes 10 reduce fluid resistance, decrease eddy current generation, and lower local resistance, resulting in a more uniform flow velocity distribution. This prevents frequent changes in fluid direction, increases the heat exchange area, and ensures the heat exchange efficiency of the shell-and-tube heat exchanger. The flanged protrusions 8 ensure the tube bundle is fixed. Stability is ensured while preventing flow blockage. The tube bundle is fixed and vibration is reduced. The markings 11 on the surface of the baffle 5 are used to clearly identify the product specifications of the baffle 5. The annular reinforcing ribs 12 are used to improve the rigidity of the baffle 5 and ensure that the baffle 5 does not deform under high pressure conditions, thereby improving the performance of the baffle 5. The mounting legs 3 can be fixed by means of bolts and mounting grooves 4, thereby installing and fixing the shell and tube heat exchanger body 1. The disc-shaped baffle 5, made of stainless steel, is used to effectively guide the fluid and improve the service life of the baffle 5.

[0021] In one aspect of this embodiment, a disc-shaped baffle 5 made of stainless steel is used to effectively guide the fluid and improve the service life of the baffle 5.

[0022] In one aspect of this embodiment, the mounting leg 3 can be fixed by means of bolts and mounting groove 4, thereby installing and fixing the shell and tube heat exchanger body 1.

[0023] In one aspect of this embodiment, the arrayed guide channels 9 are used to optimize the flow direction of the fluid, guide the flow direction of the fluid, facilitate the effective flow of the fluid, and avoid fluid stagnation.

[0024] In one aspect of this embodiment, a plurality of teardrop-shaped drag-reducing holes 10 reduce the generation of eddies, optimize the flow channel, and prevent energy loss.

[0025] In one aspect of this embodiment, the flanged protrusion 8 located on one side of the tube hole 6 ensures the stability of the tube bundle fixation and also avoids flow blockage.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A baffle for a shell-and-tube heat exchanger, comprising a shell-and-tube heat exchanger body (1), characterised in that: A protective shell (2) is fixedly installed on the surface of the shell-and-tube heat exchanger body (1). A baffle plate (5) is fixedly installed on the inner wall of the protective shell (2). A pipe hole (6) is opened on the surface of the protective shell (2). A flow guide hole (7) is opened on the surface of the baffle plate (5). A flanged protrusion (8) is fixedly installed on one side of the protective shell (2). A flow guide groove (9) is opened on one side of the baffle plate (5). A drag reduction hole (10) is opened on the surface of the baffle plate (5). A mark (11) is fixedly installed on the other side of the baffle plate (5). A reinforcing rib (12) is fixedly installed on the inner wall of the baffle plate (5).

2. A baffle for a shell-and-tube heat exchanger according to claim 1, characterized in that: The lower surface of the shell-and-tube heat exchanger body (1) is fixedly mounted with mounting legs (3), and mounting grooves (4) are provided on the surface of the mounting legs (3).

3. The baffle for a shell-and-tube heat exchanger according to claim 1, characterized in that: The baffle plate (5) is made of stainless steel and is disc-shaped.

4. The baffle for a shell-and-tube heat exchanger according to claim 1, characterized in that: The drag-reducing hole (10) is teardrop-shaped, and there are several drag-reducing holes (10).

5. The baffle for a shell-and-tube heat exchanger according to claim 1, wherein: The guide channels (9) are arranged in an array.

6. The baffle for a shell-and-tube heat exchanger according to claim 1, wherein: The flanged protrusion (8) is located on one side of the tube hole (6), and the height of the flanged protrusion (8) is five millimeters.

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