Pass partition plate structure of heat exchanger

Abstract

The utility model relates to a pass partition plate structure of a heat exchanger, which comprises a tube box barrel and a tube plate, the pass partition plate structure comprises a vertical partition plate welded with the tube box barrel, a transverse partition plate welded with the vertical partition plate and the tube box barrel and a connecting plate welded with the transverse partition plate, the distance between the connecting plate and the tube plate is 95-105mm, and the vertical partition plate is connected with the tube box barrel. The connecting plate comprises an upper frame strip, a lower frame strip, a left frame strip, a right frame strip, a middle vertical frame strip and a plurality of middle transverse frame strips, so that a plurality of openings are formed in the connecting plate, the left frame strip and the right frame strip are respectively welded with the tube box barrel, a cover plate is correspondingly arranged at each opening, and the cover plates are arranged on the upper frame strip and the lower frame strip. The cover plate is connected with the connecting plate through a plurality of fixing pieces, a plurality of pass partition plates are arranged between the connecting plate and the tube plate, one end of each pass partition plate is welded to the connecting plate, the other end of each pass partition plate is welded to the tube plate, the two sides of each pass partition plate are welded to the tube box barrel, and therefore follow-up overhaul can be facilitated.

Description

[Technical Field]

[0001] This utility model relates to the field of heat exchangers, and in particular to a partition structure for a heat exchanger. [Background Technology]

[0002] Shell-and-tube heat exchangers mainly consist of a shell, tube bundle, baffles, and end caps. The shell is mostly circular and contains parallel tube bundles or spiral tubes. The two fluids exchanging heat in a shell-and-tube heat exchanger flow in two directions: one flows inside the tubes (the tube side), and the other flows outside the tubes (the shell side). See Chinese Patent 202320753936.6, which discloses a heat exchanger structure in which a partition plate divides the tube box into upper and lower chambers. See also Chinese Patent 202321541658.4, which discloses another heat exchanger structure that divides the tube side using a left and right sleeve. The drawbacks of these two prior art partition plate structures are: 1. The partition plate and the tube box are non-detachable, requiring destructive removal of the partition plate during periodic maintenance of the welded joint between the tube sheet and the heat exchange tubes.

[0003] Therefore, it is necessary to provide a partition structure for a heat exchanger that solves the above-mentioned technical problems. [Utility Model Content]

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a partition structure for a heat exchanger that facilitates subsequent maintenance.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a partition structure for a heat exchanger, comprising: a tube box body and a tube sheet, wherein the partition structure includes: a vertical partition welded to the tube box body, a horizontal partition welded to the vertical partition and the tube box body, and a connecting plate welded to the horizontal partition. The distance between the connecting plate and the tube sheet is 95-105mm. The connecting plate is frame-shaped and includes: an upper frame strip, a lower frame strip, a left frame strip, a right frame strip, a middle vertical frame strip, and several... A central horizontal frame is formed, creating several openings on the connecting plate. The left and right frame strips are welded to the tube box body. A cover plate is provided at each opening. The cover plate is connected to the connecting plate by several fasteners. A handle is provided on the outside of the cover plate. Several partition plates are provided between the connecting plate and the tube plate. One end of the partition plate is welded to the connecting plate, and the other end of the partition plate is welded to the tube plate. Both sides of the partition plate are welded to the tube box body.

[0006] Preferably, the partition structure of the heat exchanger in this utility model is further configured such that a gasket is provided between the cover plate and the connecting plate.

[0007] Preferably, the partition structure of a heat exchanger in this invention is further configured such that the shape of the gasket is the same as the shape of the connecting plate.

[0008] Preferably, the partition structure of the heat exchanger in this utility model is further configured such that: the fixing member is a bolt, and the upper frame strip, lower frame strip, left frame strip, right frame strip, middle vertical frame strip and several middle horizontal frame strips of the connecting plate are provided with evenly arranged bolt mounting holes.

[0009] Preferably, the partition structure of a heat exchanger in this utility model is further configured such that: there is one middle vertical frame, four middle horizontal frame, and six openings and cover plates, and the openings are arranged in pairs side by side.

[0010] Preferably, the partition structure of a heat exchanger in this utility model is further configured such that the vertical partition is perpendicular to the horizontal partition, and the horizontal partition is perpendicular to the connecting plate.

[0011] Preferably, the partition structure of a heat exchanger in this invention is further configured such that several partitions are arranged in parallel.

[0012] Preferably, the partition structure of a heat exchanger in this utility model is further configured such that the partition is provided with a drain hole.

[0013] Preferably, the partition structure of a heat exchanger in this invention is further configured such that the number of partitions is three.

[0014] Compared with the prior art, the present invention has the following advantages: The partition structure in the present invention sets a small gap between the connecting plate and the tube sheet. By opening each cover plate, the worker can see the welding point between the heat exchange tube and the tube sheet. Compared with the fixed partition structure in the prior art, the present invention improves it into a frame-type connecting plate and multiple cover plate structure, which greatly facilitates subsequent maintenance work. Moreover, the number of partitions between the connecting plate and the tube sheet can be determined according to the specific needs of the tube pass setting, and it is suitable for multi-pass operation. [Attached Image Description]

[0015] Figure 1 This is a schematic diagram of the front view of the partition structure in this utility model.

[0016] Figure 2 This is a side view of the partition structure in this utility model.

[0017] Figure 3 is Figure 1 The partial enlarged view at position A in

[0018] Figure 4 is the structural schematic diagram of the connecting plate.

[0019] Figure 5 is the structural schematic diagram of the gasket.

[0020] Figure 6 is the structural schematic diagram of the cover plate from one angle.

[0021] Figure 7 is the structural schematic diagram of the cover plate from another angle.

[0022] Figures 1 to 7 In

Specific Embodiment

[0023] The following further describes in detail the split partition structure of a heat exchanger according to the present utility model through specific embodiments.

[0024] Refer Figures 1 to 7 As shown, a split partition structure of a heat exchanger includes: a shell of the tube box 1 and a tube sheet 2. The split partition structure includes: a vertical partition 3 welded to the shell of the tube box 1, a horizontal partition 4 welded to the vertical partition 3 and the shell of the tube box 1, and a connecting plate 5 welded to the horizontal partition 4. The vertical partition 3 and the horizontal partition 4 are perpendicularly arranged, and the horizontal partition 4 and the connecting plate 5 are perpendicularly arranged. The distance between the connecting plate 5 and the tube sheet 2 is 95 - 105 mm. In this embodiment, the distance between the connecting plate 5 and the tube sheet 2 is 100 mm. The reason for designing this distance to be so small is to enable workers to see the welding condition of the heat exchange tubes (not shown) and the tube sheet 2 at the opening 56 when opening the cover plate 57 during maintenance, without the need to disassemble the entire split partition structure as in the prior art during maintenance.

[0025] The connecting plate 5 is frame-shaped and includes an upper frame strip 50, a lower frame strip 51, a left frame strip 52, a right frame strip 53, a middle vertical frame strip 54, and several middle horizontal frame strips 55, thereby forming several openings 56 on the connecting plate 5. In this embodiment, there is one middle vertical frame strip 54, four middle horizontal frame strips 55, and six openings 56 and cover plates 57, with the openings 56 arranged in pairs. The left frame strip 52 and the right frame strip 53 are welded to the pipe box body 1, and a cover plate 57 is provided at each opening 56. A gasket 58 is also provided between the cover plate 57 and the connecting plate 5. The gasket 58 has the same shape as the connecting plate 5, and the gasket 58 can increase its sealing performance. The cover plate 57 and the connecting plate 5 are connected by a number of fasteners 6. In this embodiment, the fasteners 6 are bolts. The upper frame strip 50, lower frame strip 51, left frame strip 52, right frame strip 53, middle vertical frame strip 54 and a number of middle horizontal frame strips 55 of the connecting plate 5 are provided with evenly arranged bolt mounting holes 7.

[0026] The cover plate 57 is provided with a handle 570 on its outer side, which facilitates worker operation. Several partition plates 8 are provided between the connecting plate 5 and the tube sheet 2. In this embodiment, there are three partition plates 8 arranged in parallel. One end of each partition plate 8 is welded to the connecting plate 5, and the other end is welded to the tube sheet 2. Both sides of each partition plate 8 are welded to the tube box body 1. Each partition plate 8 is provided with a drain hole 80 for draining the tube medium during shutdown.

[0027] In summary, the partition structure of this utility model, by setting a small gap between the connecting plate 5 and the tube sheet 2, allows workers to see the welding point between the heat exchange tube and the tube sheet 2 at the cover plate 57 by opening each cover plate. Compared with the fixed partition structure in the prior art, this utility model improves it into a frame-type connecting plate 5 and multiple cover plates 57 structure, which greatly facilitates subsequent maintenance work. Moreover, the number of partition plates 8 between the connecting plate 5 and the tube sheet 2 can be determined according to the specific needs of the tube pass setting, making it suitable for multi-pass operation.

[0028] The above embodiments are merely illustrative of the principles and effects of this utility model, as well as some of its applications, and are not intended to limit this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A split range baffle structure for a heat exchanger, comprising: The tube box cylinder and tube plate are characterized in that the split range baffle structure comprises a vertical baffle welded with the tube box cylinder, a horizontal baffle welded with the vertical baffle and the tube box cylinder, and a connecting plate welded with the horizontal baffle, the spacing between the connecting plate and the tube plate is 95-105 mm, the connecting plate is arranged in a frame shape, the connecting plate comprises an upper frame strip, a lower frame strip, a left frame strip, a right frame strip, a middle vertical frame strip, and a plurality of middle horizontal frame strips, thereby forming a plurality of openings on the connecting plate, the left frame strip and the right frame strip are respectively welded with the tube box cylinder, a cover plate is arranged at each opening, the cover plate and the connecting plate are connected through a plurality of fixing members, a handle is arranged on the outer side of the cover plate, a plurality of split range baffles are arranged between the connecting plate and the tube plate, one end of the split range baffle is welded with the connecting plate, the other end of the split range baffle is welded with the tube plate, and the two sides of the split range baffle are respectively welded with the tube box cylinder.

2. The partition structure of a heat exchanger according to claim 1, wherein: The cover plate and the connecting plate are further provided with a gasket.

3. The partition structure of a heat exchanger according to claim 2, wherein: The shape of the gasket is the same as that of the connecting plate.

4. The partition structure of a heat exchanger according to claim 1, wherein: The fixing member is a bolt, and the upper frame strip, the lower frame strip, the left frame strip, the right frame strip, the middle vertical frame strip, and the plurality of middle horizontal frame strips of the connecting plate are all provided with uniformly arranged bolt mounting holes.

5. The partition structure of a heat exchanger according to claim 1, wherein: The number of the middle vertical frame strip is one, the number of the middle horizontal frame strip is four, the number of the openings and the cover plates is six, and the openings are arranged in pairs side by side.

6. The partition structure of a heat exchanger according to claim 1, wherein: The vertical baffle and the horizontal baffle are arranged vertically, and the horizontal baffle and the connecting plate are arranged vertically.

7. The split range baffle structure of a heat exchanger according to claim 1, wherein: The plurality of split range baffles are arranged in parallel.

8. The partition structure of a heat exchanger according to claim 1, wherein: The split range baffle is provided with a drainage hole.

9. The partition structure of a heat exchanger according to claim 1, wherein: The number of the split range baffles is three.

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