A heat exchanger shell seal

Abstract

The utility model belongs to heat exchanger shell technical field, concretely relates to a heat exchanger shell sealing element, including heat exchanger shell, heat exchanger shell one side is provided with the tube sheet, the tube sheet is connected with the flange disc through the connecting assembly, the flange disc one side is provided with the pipe box, and is provided with the first installation slot on the flange disc, the first sealing gasket is set up in the first installation slot, the second installation slot is set up on the tube sheet, the second sealing gasket is set up in the second installation slot, the second sealing gasket is integrally formed with the first sealing gasket, a plurality of through -holes that communicate with the first installation slot are arrayed and are set up on the flange disc, and the flange disc one side array is provided with a plurality of first magnetic blocks, and every first magnetic block position corresponds with every through -hole position. The device makes sealing gasket firmly fixed after installation, prevents the displacement of sealing gasket due to factors such as vibration, pressure fluctuation during the operation of heat exchanger, and greatly enhances the reliability of sealing.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchanger shells, and specifically relates to a heat exchanger shell sealing component. Background Technology

[0002] Heat exchangers, as core equipment for achieving heat exchange between fluids at different temperatures, are widely used in numerous industrial fields such as chemical, petroleum, power, and food. In chemical production, heat exchangers are used for heat control during chemical reactions, ensuring that the reaction proceeds at a suitable temperature. In the power industry, they effectively exchange the heat generated by generator sets, ensuring stable equipment operation. In food processing, they can be used for heating, cooling, or sterilizing food, ensuring food quality and safety. Structurally, shell-and-tube heat exchangers typically consist of a cylindrical shell (shell side), tube bundles, tube sheets, end caps, and various connecting components; plate heat exchangers mainly rely on heat exchange plates and gaskets to achieve heat transfer.

[0003] Currently, various heat exchanger sealing technologies and structures exist in the market. Regarding sealing materials, nitrile rubber, EPDM rubber, and fluororubber are widely used, each possessing different temperature resistance, corrosion resistance, and sealing performance. Installation methods include direct adhesive bonding, where the gasket is fixed to the heat exchange plates using sealant; adhesive pin embedding, where the gasket is embedded and fixed using mounting holes on the plates; and snap-on methods, which use a special snap-on structure to fasten the gasket to the plates. In the field of high-pressure heat exchangers, flange-type, threaded locking ring-type, diaphragm sealing disc, and ω-ring sealing structures are also used.

[0004] However, existing sealing technologies have significant drawbacks. Traditional gaskets, whether installed individually on tube sheets and flanges or using common installation methods, have numerous joint gaps that easily create leakage channels. During long-term operation, gaskets are highly susceptible to displacement due to equipment vibration, fluid impact, and temperature and pressure fluctuations. For example, direct-adhesive gaskets may lose their position due to vibration causing the sealant to loosen; in the case of embedded gaskets, the adhesive pins may detach from the mounting holes under strong vibration, causing the gasket to move; and the snap-on type is prone to loosening under repeated vibration, failing to effectively secure the gasket. Moreover, existing sealing structures lack adaptability under complex operating conditions, making it difficult to maintain good sealing performance under varying conditions.

[0005] To address this, we propose a heat exchanger shell seal that securely fixes the gasket after installation, preventing gasket displacement due to vibration, pressure fluctuations, or other factors during heat exchanger operation, thus greatly enhancing the reliability of the seal. Utility Model Content

[0006] The purpose of this invention is to provide a heat exchanger shell seal that securely fixes the gasket after installation, preventing displacement of the gasket due to vibration, pressure fluctuations, or other factors during heat exchanger operation, thereby greatly enhancing the reliability of the seal.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A heat exchanger shell sealing component includes a heat exchanger shell, a tube sheet is provided on one side of the heat exchanger shell, the tube sheet is connected to a flange via a connecting assembly, a tube box is provided on one side of the flange, and a first mounting groove is provided on the flange, a first sealing gasket is provided inside the first mounting groove, a second mounting groove is provided on the tube sheet, a second sealing gasket is provided inside the second mounting groove, and the second sealing gasket is integrally formed with the first sealing gasket.

[0009] The flange has multiple through holes arranged in an array that communicate with the first mounting groove, and multiple first magnetic blocks are arranged in an array on one side of the flange. The position of each first magnetic block corresponds to the position of each through hole. A connecting rod inserted into the through hole is provided on one side of the first sealing gasket, and a moving component is provided on one side of the connecting rod. A second magnetic block that repels the first magnetic block is provided on the moving component.

[0010] Furthermore, the connecting assembly includes a plurality of threaded holes formed in the flange and the tube sheet, and threaded rods are provided inside the threaded holes.

[0011] Furthermore, the first mounting groove matches the first sealing gasket, and the second mounting groove matches the second sealing gasket.

[0012] Furthermore, the length of the through hole matches the length of the connecting rod.

[0013] Furthermore, the moving component includes a groove formed at one end of the connecting rod, a fixed shaft is provided inside the groove, a slider and a spring are sleeved on the fixed shaft, both sides of the slider are connected to the spring, and one side of the slider is connected to the second magnetic block.

[0014] Furthermore, the slider matches the groove.

[0015] The technical effects achieved by this utility model are as follows:

[0016] First, the integrally molded first and second sealing gaskets are placed into the first mounting slot of the flange and the second mounting slot of the tube sheet, respectively. During placement, the operator must ensure that the sealing gaskets are precisely fitted into the mounting slots to avoid misalignment or incomplete embedding. The purpose of this operation is to fill the connection gap between the flange and the tube sheet with the sealing gaskets, physically preventing fluid leakage and initially establishing a sealing barrier. As the first sealing gasket smoothly enters the first mounting slot, the connecting rod connected to it will naturally insert into the corresponding through hole on the flange. At this time, the second magnetic block installed on the moving component also extends out of the through hole. The first and second magnetic blocks generate repulsive force due to their like poles, and this repulsive force is the key driving force for subsequent actions. Under the action of the repulsive force, the second magnetic block drives the moving component to begin moving. The second magnetic block gradually deviates from the center position of the through hole with the help of the moving component until it is misaligned with the through hole, achieving a limiting function. This limiting design ensures that the sealing gasket is firmly fixed after installation, preventing displacement of the sealing gasket due to vibration, pressure fluctuations, and other factors during heat exchanger operation, greatly enhancing the reliability of the seal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first and second sealing gaskets of this utility model;

[0020] Figure 4 This is a structural schematic diagram of one side and the other side of the flange of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the mobile component of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Heat exchanger shell; 2. Tube sheet; 3. Flange; 4. Tube box; 5. First mounting groove; 6. First gasket; 7. Second mounting groove; 8. Second gasket; 9. Through hole; 10. First magnetic block; 11. Connecting rod; 12. Second magnetic block; 13. Slide groove; 14. Fixed shaft; 15. Sliding block; 16. Spring. Detailed Implementation

[0024] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0025] like Figures 1-5 As shown, the technical solution adopted by this utility model is as follows: A heat exchanger shell 1 sealing element includes a heat exchanger shell 1, a tube sheet 2 is provided on one side of the heat exchanger shell 1, the tube sheet 2 is connected to a flange 3 through a connecting assembly, a tube box 4 is provided on one side of the flange 3, and a first mounting groove 5 is provided on the flange 3, a first sealing gasket 6 is provided inside the first mounting groove 5, a second mounting groove 7 is provided on the tube sheet 2, a second sealing gasket 8 is provided inside the second mounting groove 7, and the second sealing gasket 8 and the first sealing gasket 6 are integrally formed;

[0026] The flange 3 has multiple through holes 9 arranged in an array that communicate with the first mounting groove 5, and multiple first magnetic blocks 10 are arranged in an array on one side of the flange 3. The position of each first magnetic block 10 corresponds to the position of each through hole 9. A connecting rod 11 is provided on one side of the first sealing gasket 6 and inserted into the through hole 9. A moving component is provided on one side of the connecting rod 11, and a second magnetic block 12 that repels the first magnetic block 10 is provided on the moving component.

[0027] The connecting component includes multiple threaded holes on the flange 3 and the tube sheet 2. Threaded rods are provided inside the threaded holes, and the flange 3 and the tube sheet 2 are connected through the threaded rods inside the threaded holes.

[0028] At the same time, the first mounting groove 5 matches the first sealing gasket 6, and the second mounting groove 7 matches the second sealing gasket 8. This arrangement ensures the installation of the first sealing gasket 6 and the second sealing gasket 8 without any installation gaps.

[0029] The length of the through hole 9 matches the length of the connecting rod 11. This arrangement ensures that when the connecting rod 11 enters the through hole 9, the second magnetic block 12 extends out of the through hole 9 without any shaking. In other words, when the second magnetic block 12 extends out, it fits against one side of the flange 3.

[0030] The moving component includes a slide groove 13 at one end of the connecting rod 11. A fixed shaft 14 is provided inside the slide groove 13. A slider 15 and a spring 16 are sleeved on the fixed shaft 14. Both sides of the slider 15 are connected to the spring 16, and one side of the slider 15 is connected to the second magnetic block 12. When the first magnetic block 10 and the second magnetic block 12 generate a repulsive force, the second magnetic block 12 drives the slider 15 to move inside the slide groove 13, thereby misaligning it with the through hole 9.

[0031] The slider 15 is matched with the slide groove 13. This arrangement ensures that the slider 15 moves smoothly inside the slide groove 13 without jamming.

[0032] The working principle of this utility model is as follows: First, the integrally formed first sealing gasket 6 and second sealing gasket 8 are respectively placed into the first mounting groove 5 of the flange 3 and the second mounting groove 7 of the tube sheet 2. During the placement process, the operator must ensure that the sealing gasket and the mounting groove are precisely fitted to avoid misalignment or partial incomplete embedding. The purpose of this operation is to use the sealing gasket to fill the connection gap between the flange 3 and the tube sheet 2, thereby physically preventing fluid leakage and initially building a sealing barrier. As the first sealing gasket 6 smoothly enters the first mounting groove 5, the connecting rod 11 connected to it will naturally insert into the corresponding through hole 9 on the flange 3. At this time, the second magnetic block 12 installed on the moving component also extends out of the through hole 9. The first magnetic block 10 and the second magnetic block 12 generate a repulsive force due to their like poles, and this repulsive force is the key driving force for subsequent actions. Under the action of the repulsive force, the second magnetic block 12 drives the moving component to start moving. The second magnetic block 12 gradually deviates from the center position of the through hole 9 with the help of the moving component until it is misaligned with the through hole 9, realizing the limiting function. This limiting design ensures that the gasket is firmly fixed after installation, preventing displacement of the gasket due to factors such as vibration and pressure fluctuations during heat exchanger operation, thus greatly enhancing the reliability of the seal.

[0033] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A heat exchanger shell seal, comprising a heat exchanger shell (1), characterized in that: A tube sheet (2) is provided on one side of the heat exchanger shell (1). The tube sheet (2) is connected to a flange (3) through a connecting assembly. A tube box (4) is provided on one side of the flange (3). A first mounting groove (5) is provided on the flange (3). A first sealing gasket (6) is provided inside the first mounting groove (5). A second mounting groove (7) is provided on the tube sheet (2). A second sealing gasket (8) is provided inside the second mounting groove (7). The second sealing gasket (8) and the first sealing gasket (6) are integrally formed. The flange (3) is provided with a plurality of through holes (9) that communicate with the first mounting groove (5), and a plurality of first magnetic blocks (10) are arranged in an array on one side of the flange (3). The position of each first magnetic block (10) corresponds to the position of each through hole (9). A connecting rod (11) is provided on one side of the first sealing gasket (6) and inserted into the through hole (9). A moving component is provided on one side of the connecting rod (11), and a second magnetic block (12) that repels the first magnetic block (10) is provided on the moving component.

2. A heat exchanger shell seal according to claim 1, characterized in that: The connecting assembly includes multiple threaded holes formed on the flange (3) and the tube sheet (2), and threaded rods are provided inside the threaded holes.

3. A heat exchanger shell seal according to claim 1, characterized in that: The first mounting groove (5) matches the first sealing gasket (6), and the second mounting groove (7) matches the second sealing gasket (8).

4. A heat exchanger shell seal according to claim 1, characterized in that: The length of the through hole (9) matches the length of the connecting rod (11).

5. A heat exchanger shell seal according to claim 1, characterized in that: The moving component includes a groove (13) formed at one end of the connecting rod (11). A fixed shaft (14) is provided inside the groove (13). A slider (15) and a spring (16) are sleeved on the fixed shaft (14). Both sides of the slider (15) are connected to the spring (16), and one side of the slider (15) is connected to the second magnetic block (12).

6. A heat exchanger shell seal according to claim 5, characterized in that: The slider (15) is matched with the groove (13).

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