A stroke partition structure convenient for maintenance

Abstract

The utility model relates to a kind of maintenance convenient split range partition plate structure, comprising: horizontal section split range partition plate and vertical section split range partition plate, the horizontal section split range partition plate includes partition plate, first frame flange plate, first cover plate, second cover plate, first connecting plate, second connecting plate and third connecting plate, the second connecting plate and third connecting plate are welded between first connecting plate and tube sheet, the second connecting plate and third connecting plate form temperature insulation cavity between, the vertical section split range partition plate includes second frame flange plate, third cover plate, fourth cover plate and fifth cover plate, the top of second frame flange plate is welded with horizontal section split range partition plate, the third cover plate is connected between second frame flange plate by several third fixed parts, the fourth cover plate is connected between second frame flange plate by several fourth fixed parts, the fifth cover plate is connected between second frame flange plate by several fifth fixed parts, to improve the service life of heat exchanger.

Description

[Technical Field]

[0001] This utility model relates to the field of heat exchangers, and in particular to a partition structure that is easy to maintain. [Background Technology]

[0002] A heat exchanger is a device that transfers some of the heat from a hot fluid to a cold fluid; it is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial productions. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, and are widely used.

[0003] The baffle plate in a heat exchanger is an important component of the shell-side structure. Its function is to change the fluid flow direction and improve heat transfer efficiency. Please refer to [link to relevant documentation]. Figure 1 The paper discloses a partition structure in the prior art, including a horizontal partition 2' welded to the tube sheet 1' and a vertical partition 4' welded to the equipment shell 3'. Both the horizontal partition 2' and the vertical partition 4' are made of a single sheet. The defects of this partition structure are: 1. Because it is an integral welded structure, the weld seam needs to be removed during maintenance, which is not only inefficient but may also damage the equipment shell and tube sheet during disassembly; 2. In our daily work, we found that the temperature of the tube-side medium is about 420° when it enters from the tube-side medium inlet, and then the temperature is about 320° when it reaches the tube-side medium outlet after heat exchange through the heat exchange tubes. That is, there is a temperature difference between the upper and lower tube-side mediums of the partition, which can cause the weld seam at the weld between the horizontal partition and the tube sheet to crack.

[0004] Therefore, it is necessary to provide a partition structure that is easy to maintain and solves the above-mentioned technical problems. [Utility Model Content]

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a partition structure that facilitates maintenance.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a partition structure for easy maintenance, comprising: a horizontal partition and a vertical partition. The horizontal partition includes a partition, a first frame flange, a first cover plate, a second cover plate, a first connecting plate, a second connecting plate, and a third connecting plate. The partition is welded to one side of the first frame flange, and the first connecting plate is welded to the other side of the first frame flange. The first cover plate is connected to the first frame flange by a plurality of first fasteners, and the second cover plate is connected to the first frame flange by a plurality of second fasteners. The second connecting plate and the third connecting plate... The connecting plate is welded between the first connecting plate and the tube sheet, and a heat insulation cavity is formed between the second connecting plate and the third connecting plate. The vertical section partition plate includes a second frame flange plate and a third cover plate, a fourth cover plate, and a fifth cover plate that cooperate with the second frame flange plate. The top of the second frame flange plate is welded to the horizontal section partition plate, and the bottom of the second frame flange plate is welded to the equipment cylinder. The third cover plate is connected to the second frame flange plate by a number of third fasteners, the fourth cover plate is connected to the second frame flange plate by a number of fourth fasteners, and the fifth cover plate is connected to the second frame flange plate by a number of fifth fasteners.

[0007] Preferably, the maintenance-friendly partition structure of this utility model is further configured such that the second connecting plate and the third connecting plate are arranged in parallel, and the second connecting plate and the third connecting plate are respectively arranged perpendicular to the first connecting plate and the tube sheet.

[0008] Preferably, the partition structure of the present invention that facilitates maintenance is further configured such that: the third connecting plate is disposed below the second connecting plate, and the third connecting plate is provided with a drain hole.

[0009] Preferably, the partition structure of this utility model that is easy to maintain is further configured such that the first connecting plate, the second connecting plate, the third connecting plate and the tube sheet are all made of CrMo steel.

[0010] Preferably, the maintenance-friendly partition structure of the present invention is further configured as follows: a first nickel base layer is provided at the welding joint between the second connecting plate and the first connecting plate, a second nickel base layer is provided at the welding joint between the second connecting plate and the tube sheet, a third nickel base layer is provided at the welding joint between the third connecting plate and the first connecting plate, and a fourth nickel base layer is provided at the welding joint between the third connecting plate and the tube sheet.

[0011] Preferably, the partition structure of the present invention, which is convenient for maintenance, is further configured as follows: a first gasket is provided between the first cover plate and the first frame flange plate, a second gasket is provided between the second cover plate and the first frame flange plate, a third gasket is provided between the third cover plate and the second frame flange plate, a fourth gasket is provided between the fourth cover plate and the second frame flange plate, and a fifth gasket is provided between the fifth cover plate and the second frame flange plate.

[0012] Preferably, the partition structure of this utility model that is easy to maintain is further configured such that the first fixing member, the second fixing member, the third fixing member, the fourth fixing member and the fifth fixing member are all bolts.

[0013] Preferably, the partition structure of this utility model that is easy to maintain is further configured such that the third cover plate, the fourth cover plate and the fifth cover plate are spliced ​​together to form a semi-circular structure.

[0014] Preferably, the partition structure of the present invention that facilitates maintenance is further configured such that handles are provided on the first cover plate, the second cover plate, the third cover plate, the fourth cover plate and the fifth cover plate.

[0015] Compared with existing technologies, this invention has the following advantages: By designing the partition plate as a frame flange plate with a cover plate, maintenance can be performed simply by removing the cover plate, allowing workers to enter and perform maintenance. This avoids damage to the tube sheet and equipment shell caused by existing technologies. Furthermore, by setting a first and second cover plate at the top and a third, fourth, and fifth cover plate on the side, maintenance workers can extend their upper bodies from the first and second cover plates at the top after entering from the side, greatly improving their comfort. Additionally, by setting a second and third connecting plate and an insulation cavity between the second and third connecting plates, this invention prevents the weld between the horizontal partition plate and the tube sheet from cracking due to temperature differences between the upper and lower tube media, thereby extending the service life of the heat exchanger. [Attached Image Description]

[0016] Figure 1 This is a schematic diagram of a partition structure in the prior art.

[0017] Figure 2 This utility model presents a front view of the partition structure.

[0018] Figure 3 This is a side view of the partition structure in this utility model.

[0019] Figure 4 This is a top view of the partition structure in this utility model.

[0020] Figure 5 It is a structural schematic diagram of the first frame flange plate in the present utility model.

[0021] Figure 6 It is a structural schematic diagram of the second frame flange plate in the present utility model.

[0022] Figure 1 in the figure: 1', tube sheet; 2', horizontal pass partition; 3', equipment cylinder; 4', vertical pass partition.

[0023] Figures 2 to 6 in the figure: 1, horizontal pass partition; 10, partition plate; 11, first frame flange plate; 12, first cover plate; 120, first fixing member; 121, first gasket; 13, second cover plate; 130, second fixing member; 131, second gasket; 14, first connecting plate; 15, second connecting plate; 16, third connecting plate; 160, drain hole; 2, vertical pass partition; 20, second frame flange plate; 21, third cover plate; 210, third fixing member; 22, fourth cover plate; 220, fourth fixing member; 221, fourth gasket; 23, fifth cover plate; 230, fifth fixing member; 3, tube sheet; 4, temperature insulation cavity; 5, equipment cylinder. [Detailed Description of Embodiments]

[0024] The pass partition structure convenient for maintenance according to the present utility model is further described in detail below through specific embodiments.

[0025] Reference Figures 2 to 6As shown, a maintenance-friendly partition structure includes a horizontal partition 1 and a vertical partition 2. The horizontal partition 1 includes a partition 10, a first frame flange 11, a first cover plate 12, a second cover plate 13, a first connecting plate 14, a second connecting plate 15, and a third connecting plate 16. The partition 10 is welded to one side of the first frame flange 11, and the first connecting plate 14 is welded to the other side of the first frame flange 11. The first cover plate 12 is connected to the first frame flange 11 by a plurality of first fasteners 120, and the second cover plate 13 is connected to the first frame flange 11 by a plurality of second fasteners 130. In this embodiment, both the first fasteners 120 and the second fasteners 130 are bolts. The second connecting plate 15 and the third connecting plate 16 are arranged parallel to each other, and the second connecting plate 15 and the third connecting plate 16 are respectively arranged perpendicular to the first connecting plate 14 and the tube sheet 3. The third connecting plate 16 is disposed below the second connecting plate 15, and the third connecting plate 16 is provided with a drain hole 160. The second connecting plate 15 and the third connecting plate 16 are welded between the first connecting plate 14 and the tube sheet 3, forming a heat insulation cavity 4 between the second connecting plate 15 and the third connecting plate 16. The vertical section partition 2 includes a second frame flange plate 20 and a third cover plate 21, a fourth cover plate 22, and a fifth cover plate 23 that cooperate with the second frame flange plate 20. The top of the second frame flange plate 20 is welded to the horizontal section partition 1, and the bottom of the second frame flange plate 20 is welded to the equipment cylinder 5. The third cover plate 21 is connected to the second frame flange plate 20 by a plurality of third fasteners 210, the fourth cover plate 22 is connected to the second frame flange plate 20 by a plurality of fourth fasteners 220, and the fifth cover plate 23 is connected to the second frame flange plate 20 by a plurality of fifth fasteners 230. In this embodiment, the third fixing member 210, the fourth fixing member 220 and the fifth fixing member 230 are bolts, and the third cover plate 21, the fourth cover plate 22 and the fifth cover plate 23 are spliced ​​together to form a semi-circular structure.

[0026] The first cover plate 12, the second cover plate 13, the third cover plate 21, the fourth cover plate 22, and the fifth cover plate 23 are all equipped with handles to facilitate operation by maintenance workers. A first gasket 121 is provided between the first cover plate 12 and the first frame flange plate 11, a second gasket 131 is provided between the second cover plate 13 and the first frame flange plate 11, a third gasket (not shown) is provided between the third cover plate 21 and the second frame flange plate 20, a fourth gasket 221 is provided between the fourth cover plate 22 and the second frame flange plate 20, and a fifth gasket (not shown) is provided between the fifth cover plate 23 and the second frame flange plate 20. The gaskets improve the sealing performance between the cover plate and the frame flange plate. In this embodiment, the first connecting plate 14, the second connecting plate 15, the third connecting plate 16, and the tube sheet 3 are all made of CrMo steel. A first nickel base layer is provided at the weld joint between the second connecting plate 15 and the first connecting plate 14; a second nickel base layer is provided at the weld joint between the second connecting plate 15 and the tube sheet 3; a third nickel base layer is provided at the weld joint between the third connecting plate 16 and the first connecting plate 14; and a fourth nickel base layer is provided at the weld joint between the third connecting plate 16 and the tube sheet 3. The first, second, third, and fourth nickel base layers are all welded using a surfacing welding method. The reason for designing the nickel base layer is that although CrMo steel has high structural strength, the welding stress after welding needs to be eliminated through heat treatment. Therefore, a nickel base layer is provided to avoid heat treatment.

[0027] In summary, this invention, by designing the partition plate as a frame flange plate with a cover plate, allows workers to easily access the equipment for maintenance simply by removing the cover plate, thus avoiding damage to the tube sheet and equipment shell caused by existing technologies. Furthermore, by providing a first and second cover plate at the top and a third, fourth, and fifth cover plate on the side, this invention allows maintenance workers to extend their upper bodies from the first and second cover plates at the top after entering from the side, significantly improving worker comfort. This invention also features a second and third connecting plate and an insulation cavity between the second and third connecting plates, preventing the weld between the horizontal partition plate and the tube sheet from cracking due to temperature differences between the upper and lower tube-side media, thereby extending the service life of the heat exchanger.

[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 partition structure for easy maintenance, comprising: A horizontal and vertical segment partition plate, characterized in that: the horizontal segment partition plate includes a partition plate, a first frame flange plate, a first cover plate, a second cover plate, a first connecting plate, a second connecting plate, and a third connecting plate; the partition plate is welded to one side of the first frame flange plate, the first connecting plate is welded to the other side of the first frame flange plate, the first cover plate is connected to the first frame flange plate by a plurality of first fasteners, the second cover plate is connected to the first frame flange plate by a plurality of second fasteners, and the second and third connecting plates are welded between the first connecting plate and the tube sheet. A heat-insulating cavity is formed between the second connecting plate and the third connecting plate. The vertical section partition plate includes a second frame flange plate and a third cover plate, a fourth cover plate, and a fifth cover plate that cooperate with the second frame flange plate. The top of the second frame flange plate is welded to the horizontal section partition plate, and the bottom of the second frame flange plate is welded to the equipment cylinder. The third cover plate is connected to the second frame flange plate by a number of third fasteners, the fourth cover plate is connected to the second frame flange plate by a number of fourth fasteners, and the fifth cover plate is connected to the second frame flange plate by a number of fifth fasteners.

2. The partition structure for easy maintenance as described in claim 1, characterized in that: The second connecting plate and the third connecting plate are arranged in parallel, and the second connecting plate and the third connecting plate are respectively arranged perpendicular to the first connecting plate and the tube sheet.

3. The partition structure for easy maintenance as described in claim 2, characterized in that: The third connecting plate is disposed below the second connecting plate, and the third connecting plate is provided with a drain hole.

4. The partition structure for easy maintenance as described in claim 1, characterized in that: The first connecting plate, the second connecting plate, the third connecting plate, and the tube sheet are all made of CrMo steel.

5. The partition structure for easy maintenance as described in claim 4, characterized in that: The second connecting plate and the first connecting plate are respectively provided with a first nickel base layer at their welding joints, the second connecting plate and the tube sheet are respectively provided with a second nickel base layer at their welding joints, the third connecting plate and the first connecting plate are respectively provided with a third nickel base layer at their welding joints, and the third connecting plate and the tube sheet are respectively provided with a fourth nickel base layer at their welding joints.

6. The partition structure for easy maintenance as described in claim 1, characterized in that: A first gasket is provided between the first cover plate and the first frame flange plate, a second gasket is provided between the second cover plate and the first frame flange plate, a third gasket is provided between the third cover plate and the second frame flange plate, a fourth gasket is provided between the fourth cover plate and the second frame flange plate, and a fifth gasket is provided between the fifth cover plate and the second frame flange plate.

7. The partition structure for easy maintenance as described in claim 1, characterized in that: The first, second, third, fourth, and fifth fixing components are all bolts.

8. The partition structure for easy maintenance as described in claim 1, characterized in that: The third, fourth, and fifth cover plates are joined together to form a semi-circular structure.

9. The partition structure for easy maintenance as described in claim 1, characterized in that: Handles are provided on the first cover plate, the second cover plate, the third cover plate, the fourth cover plate and the fifth cover plate.

Images