Baffle plate for shell-and-tube heat exchanger

Abstract

The utility model discloses a baffle plate for a shell-and-tube heat exchanger, and relates to the field of single-bow type baffle plates, the baffle plate comprises a plurality of baffle plates which are vertically distributed in a staggered manner, an inclined surface is formed on the top end surface of each baffle plate, a plurality of beam tube holes are formed in each inclined surface, and a plurality of beam tube holes are formed in each beam tube hole. A guide structure is arranged at the position, located at the edge of the beam tube hole, of the top of the inclined face. The utility model discloses. The flow direction of fluid in a shell pass is changed for multiple times, so that the flow resistance is increased, the pressure drop is larger, larger pump power is needed to overcome the resistance, and the operation cost is increased.

Description

Technical Field

[0001] This utility model relates to the field of single-bow type baffles, specifically a baffle for a shell-and-tube heat exchanger. Background Technology

[0002] Single-arch baffles are typically segmental, resembling a complete circle with a portion cut off. The notch is generally 0.2-0.45 times the shell-side cylinder diameter, allowing the shell-side fluid to pass through the tube bundle multiple times along a predetermined path within the heat exchanger. This extends the flow channel length, increases the inter-tube velocity and turbulence, and ensures full contact between the fluid and the heat exchange tubes, enhancing the heat transfer process. Simultaneously, it provides support for the heat exchange tubes, preventing deformation or vibration.

[0003] In existing technologies, the fluid changes its flow direction multiple times within the shell side, leading to increased flow resistance and a larger pressure drop. This requires a larger pump power to overcome the resistance, thus increasing operating costs. Utility Model Content

[0004] The purpose of this utility model is to provide a baffle for a shell-and-tube heat exchanger in order to solve the problems mentioned in the background art.

[0005] 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 plurality of vertically staggered baffle plates, the top surface of the baffle plate being formed with an inclined surface, the interior of the inclined surface being provided with a plurality of bundle tube holes, and the top of the inclined surface being provided with a guide structure at the edge of the bundle tube holes.

[0006] As a further embodiment of this utility model: the guiding structure includes a guide plate fixed to the top of the baffle plate, and the top of the guide plate is formed with a side guide surface arranged along the inclined direction of the inclined surface.

[0007] As a further improvement of this utility model: the cross-section of the side guide surface is V-shaped, and the two ends of the guide plate are formed with top guide surfaces.

[0008] As a further improvement of this utility model, the guide plate and the adjacent guide plate have a flow channel for the medium to flow.

[0009] As a further improvement of this utility model: the end of the guide plate near the bundle tube hole has an arc structure, and the arc structure is aligned with the bundle tube hole in the vertical direction.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a guiding structure, the flow resistance can be reduced, thereby reducing the operating power of the pump and avoiding the problem of increased operating costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the baffle plate of this utility model;

[0013] Figure 3 This is a schematic diagram of the inclined surface of this utility model.

[0014] In the diagram: 1. Baffle plate; 2. Inclined surface; 3. Bundle tube orifice; 4. Guide plate; 5. Top guide surface; 6. Side guide surface. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-3 In this embodiment of the utility model, a baffle plate for a shell-and-tube heat exchanger includes multiple vertically staggered baffle plates 1. The top surface of the baffle plate 1 is formed with an inclined surface 2. Multiple bundled tube holes 3 are opened inside the inclined surface 2. A guide structure is provided at the edge of the bundled tube holes 3 on the top of the inclined surface 2.

[0017] In this embodiment: when the heat medium flows from top to bottom, the flowing medium continuously contacts the baffles 1 at different heights, thereby changing the flow direction of the flowing medium, increasing the contact area and time with the bundle tube, and achieving a better heat exchange effect. When the medium contacts the inclined surface 2 at the top of the baffle 1, the inclined surface 2 has a guiding effect, which facilitates the medium to flow downward better. At the same time, the guiding structure can reduce the number of contacts between the medium and the bundle tube, thereby reducing flow resistance and facilitating better flow of the medium.

[0018] Please refer to this carefully. Figure 2 The guiding structure includes a guide plate 4 fixed to the top of the baffle plate 1. The top of the guide plate 4 is formed with a side guide surface 6 arranged in the inclined direction along the inclined surface 2. The cross-section of the side guide surface 6 is a "V" shaped structure. The two ends of the guide plate 4 are formed with top guide surfaces 5.

[0019] In this embodiment: During the downward flow of the medium, it flows from the upper baffle 1 to the lower baffle 1. After the medium falls onto the baffle 1, it flows under the guidance of the side guide surface 6, thereby reducing the contact area with other bundle tubes and facilitating better flow of the medium. Next, the medium in contact with the bundle tubes flows downward along the bundle tubes until it contacts the top guide surface 5. At this time, the medium flowing downward along the surface of the bundle tubes is discharged obliquely downward by the top guide surface 5, thereby further improving the flow efficiency of the medium and reducing flow resistance.

[0020] Please refer to this carefully. Figure 2 There is a flow channel for the medium to flow between the guide plate 4 and the adjacent guide plate 4.

[0021] In this embodiment, after the medium comes into contact with the side guide surface 6 of the guide plate 4, it flows along the side guide surface 6 from the flow channel and no longer comes into contact with the surface of the bundle tube, thereby reducing flow resistance.

[0022] Please refer to this carefully. Figure 2 The end of the guide plate 4 near the bundle tube hole 3 has an arc structure, and the arc structure is aligned with the bundle tube hole 3 in the vertical direction.

[0023] In this embodiment: This design avoids the gap between the guide plate 4 and the bundle tube, and the two are in close contact, which can avoid the formation of flow obstruction space.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A baffle plate for a shell-and-tube heat exchanger, comprising a plurality of vertically staggered baffle plates (1), characterized in that, The top surface of the baffle plate (1) is formed with an inclined surface (2), and a plurality of tube holes (3) are opened inside the inclined surface (2). A guide structure is provided at the top of the inclined surface (2) at the edge of the tube hole (3).

2. A baffle plate for a shell-and-tube heat exchanger according to claim 1, characterized in that, The guiding structure includes a guide plate (4) fixed to the top of the baffle (1), and the top of the guide plate (4) is formed with a side guide surface (6) arranged along the inclined direction of the inclined surface (2).

3. A baffle plate for a shell-and-tube heat exchanger according to claim 2, characterized in that, The cross-section of the side guide surface (6) is V-shaped, and the two ends of the guide plate (4) are formed with top guide surfaces (5).

4. A baffle plate for a shell-and-tube heat exchanger according to claim 3, characterized in that, The guide plate (4) has a flow channel for the medium to flow between it and the adjacent guide plate (4).

5. A baffle plate for a shell-and-tube heat exchanger according to claim 4, characterized in that, The guide plate (4) has an arc structure at one end near the bundle tube hole (3), and the arc structure is aligned with the bundle tube hole (3) in the vertical direction.

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