Sealing structure of lamella heat exchanger

Abstract

The utility model discloses a sealing structure of a lamella heat exchanger, which relates to the technical field of lamella heat exchangers and comprises a shell, a connecting pipe is arranged on the side wall of the shell, a fusion end is arranged at the top of the shell, the top end of the fusion end is connected with a connecting end through a flange assembly, and a shielding device is arranged at the connecting end and used for shielding the flange assembly. The shielding device comprises a cover movably penetrating through the connecting end, a rubber ring used for sealing a gap between the top of the cover and the connecting end is arranged on an inner ring of the cover, a fixing buckle is arranged at the bottom of the cover, a hook used for limiting movement of the cover is movably hooked on the fixing buckle, and the hook is connected with a spring used for pulling down the hook. The adsorption device is used for adsorbing water vapor in the cover, liquid is prevented from making contact with the flange assembly, the connecting and sealing effects of the flange assembly are improved, the water vapor making contact with the flange assembly is reduced, and the service life of the flange assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of plate and shell heat exchangers, in particular to a sealing structure of a plate and shell heat exchanger. Background Art

[0002] The plate and shell heat exchanger is a heat exchanger that uses plate and tube as heat transfer elements, also known as a thin-film heat exchanger. It is mainly composed of two parts: a plate and tube bundle and a shell. The contact points of the cold-pressed paired strips are tightly welded together to form a plate and tube containing multiple flat flow channels.

[0003] In the prior art, a utility model patent with announcement number CN220750939U provides a sealing structure of a plate and shell heat exchanger, including a shell, a connecting pipe installed on the side of the shell, a connecting flange installed on the top of the connecting pipe, a fusion end installed on the top of the shell, a first flange installed on the top of the fusion end, and a sealing ring installed inside, a chimeric end installed inside the fusion end, an extension end installed at the bottom of the chimeric end, and a second flange installed on the top, a guide plate installed at the bottom of the extension end, a connecting end installed on the top of the second flange, and a third flange installed on the top of the connecting end.

[0004] The sealing structure of the plate and shell heat exchanger has a second flange that is directly exposed to the outside and is easily in contact with external liquid and gas, causing the second flange to be easily corroded, affecting the connection and sealing effect of the second flange. For this reason, we propose a sealing structure of a plate and shell heat exchanger to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to provide a sealing structure of a plate and shell heat exchanger to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure of a plate and shell heat exchanger, comprising a shell, a connecting pipe is provided on the side wall of the shell, a fusion end is provided on the top of the shell, the top of the fusion end is connected to the connecting end through a flange assembly, a shielding device is provided on the connecting end, the shielding device is used to shield the flange assembly, the shielding device comprises a cover that moves through the connecting end, a rubber ring for sealing the gap between the top of the cover and the connecting end is provided on the inner ring of the cover, a fixing buckle is provided at the bottom of the cover, a hook for limiting the movement of the cover is movably hooked on the fixing buckle, the hook is connected to a spring for pulling down the hook, and the spring is arranged on the adsorption device at one end away from the hook.

[0007] Preferably, the adsorption device is used to adsorb water vapor in the cover.

[0008] Preferably, the adsorption device comprises a rubber seat penetrating the shell, a groove is provided in the rubber seat, and adsorption cotton for adsorbing liquid is provided in the groove.

[0009] Preferably, the cover is a hollow cylindrical structure, the hollow part of the cover is a cylindrical boss structure, and the cover is used to movably cover the flange assembly.

[0010] Preferably, the fixing buckles are of U-shaped structure, and at least two groups of the fixing buckles are provided and symmetrically distributed at the bottom of the cover.

[0011] Preferably, the hook is used to connect the spring and the fixing buckle, the sum of the length of the hook and the minimum length of the spring is less than the height of the rubber seat, and the free end of the spring is connected to the outer wall of the rubber seat.

[0012] Preferably, the structure of the rubber seat is the same as that of the cover, the outer wall of the rubber seat moves to fit and contact the inner wall of the cover, and the adsorbent cotton is a universal adsorbent material.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. After the flange assembly is connected to the connection end, push the cover down and cover the flange assembly. The inner wall of the bottom of the cover fits in contact with the outer ring of the rubber seat. The cover and the rubber seat form a closed space. Then hook the hook on the fixing buckle. At this time, the spring is in a stretched state. The spring, fixing buckle and hook limit the separation of the cover and the rubber seat to prevent liquid from contacting the flange assembly and improve the connection and sealing effect of the flange assembly.

[0015] 2. The adsorption cotton can absorb the water vapor in the cover, so that the closed space composed of the cover and the rubber seat remains dry, reducing the corrosion of the seal, reducing the contact of the flange assembly with water vapor, and increasing the service life of the flange assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the shielding device in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the adsorption device in the utility model.

[0019] In the figure: 1. Shell; 2. Connecting pipe; 3. Fusion end; 4. Flange assembly; 5. Connecting end; 6. Shielding device; 61. Cover; 62. Rubber ring; 63. Fixing buckle; 64. Hook; 65. Spring; 7. Adsorption device; 71. Rubber seat; 72. Groove; 73. Adsorption cotton. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 A sealing structure of a plate and shell heat exchanger comprises a shell 1, a connecting pipe 2 is arranged on the side wall of the shell 1, a fusion end 3 is arranged on the top of the shell 1, the top of the fusion end 3 is connected to the connection end 5 through a flange assembly 4, a shielding device 6 is arranged on the connection end 5, the shielding device 6 is used to shield the flange assembly 4, the shielding device 6 comprises a cover 61 that moves through the connection end 5, a rubber ring 62 for sealing the gap between the top of the cover 61 and the connection end 5 is arranged on the inner ring of the cover 61, a fixing buckle 63 is arranged at the bottom of the cover 61, and a hook is arranged on the fixing buckle 63 to limit the cover 61 moves the hook 64, the hook 64 is connected with a spring 65 for pulling down the hook 64, the cover 61 is a hollow cylindrical structure, the hollow part of the cover 61 is a cylindrical boss structure, the cover 61 is used to move the cover on the flange assembly 4, the fixing buckle 63 is a U-shaped structure, the fixing buckle 63 is provided with at least two groups and is symmetrically distributed at the bottom of the cover 61, the hook 64 is used to connect the spring 65 and the fixing buckle 63, the sum of the length of the hook 64 and the minimum length of the spring 65 is less than the height of the rubber seat 71, and the free end of the spring 65 is connected to the outer wall of the rubber seat 71.

[0022] After the flange assembly is connected to the connecting end 5, the cover 61 is pushed down and covers the flange assembly 4. The inner wall at the bottom of the cover 61 is in contact with the outer ring of the rubber seat 71. The cover 61 and the rubber seat 71 form a closed space. Then the hook 64 is hooked on the fixing buckle 63. At this time, the spring 65 is in a stretched state. The spring 65, the fixing buckle 63 and the hook 64 limit the separation of the cover 61 and the rubber seat 71 to prevent liquid from contacting the flange assembly 4, thereby improving the connection and sealing effect of the flange assembly 4.

[0023] One end of the spring 65 away from the hook 64 is arranged on the adsorption device 7, and the adsorption device 7 is used to adsorb water vapor in the cover 61. The adsorption device 7 includes a rubber seat 71 that penetrates the shell 1, and a groove 72 is provided in the rubber seat 71. The groove 72 is provided with adsorption cotton 73 for adsorbing liquid. The structure of the rubber seat 71 is the same as that of the cover 61. The outer wall of the rubber seat 71 moves to fit and contact the inner wall of the cover 61, and the adsorption cotton 73 is a universal adsorption material.

[0024] The adsorption cotton 73 can absorb the water vapor in the cover 61, so that the closed space formed by the cover 61 and the rubber seat 71 remains dry, reducing corrosion to the seal, reducing the contact of the flange assembly 4 with water vapor, and increasing the service life of the flange assembly 4.

[0025] Working principle: After the flange assembly is connected to the connecting end 5, the cover 61 is pushed down and covers the flange assembly 4. The inner wall of the bottom of the cover 61 is in contact with the outer ring of the rubber seat 71. The cover 61 and the rubber seat 71 form a closed space. Then the hook 64 is hooked on the fixing buckle 63. At this time, the spring 65 is in a stretched state. The spring 65, the fixing buckle 63 and the hook 64 limit the separation of the cover 61 and the rubber seat 71 to avoid liquid contact with the flange assembly 4, thereby improving the connection and sealing effect of the flange assembly 4. The adsorption cotton 73 can absorb the water vapor in the cover 61 to keep the closed space formed by the cover 61 and the rubber seat 71 dry, reduce the corrosion of the seal, reduce the contact of the flange assembly 4 with water vapor, and improve the service life of the flange assembly 4.

[0026] The shell 1, the connecting pipe 2, the fusion end 3, the flange assembly 4 and the connecting end 5 are all prior arts and will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure of a plate and shell heat exchanger, comprising a shell (1), a connecting pipe (2) being provided on the side wall of the shell (1), a fusion end (3) being provided on the top of the shell (1), the top end of the fusion end (3) being connected to a connecting end (5) via a flange assembly (4), characterized in that: The connecting end (5) is provided with a shielding device (6), and the shielding device (6) is used to shield the flange assembly (4). The shielding device (6) comprises a cover (61) that moves through the connecting end (5), and a rubber ring (62) is provided on the inner ring of the cover (61) for sealing the gap between the top of the cover (61) and the connecting end (5). The bottom of the cover (61) is provided with a fixing buckle (63), and a hook (64) for limiting the movement of the cover (61) is movably hooked on the fixing buckle (63), and the hook (64) is connected to a spring (65) for pulling down the hook (64), and the end of the spring (65) away from the hook (64) is provided on the adsorption device (7).

2. The sealing structure of the plate and shell heat exchanger according to claim 1, characterized in that: The adsorption device (7) is used to adsorb water vapor in the cover (61).

3. The sealing structure of the plate and shell heat exchanger according to claim 2, characterized in that: The adsorption device (7) comprises a rubber seat (71) penetrating the shell (1), a groove (72) is provided in the rubber seat (71), and adsorption cotton (73) for adsorbing liquid is provided in the groove (72).

4. The sealing structure of the plate and shell heat exchanger according to claim 1, characterized in that: The cover (61) is a hollow cylindrical structure, the hollow part of the cover (61) is a cylindrical boss structure, and the cover (61) is used to movably cover the flange assembly (4).

5. The sealing structure of the plate and shell heat exchanger according to claim 1, characterized in that: The fixing buckles (63) are of a U-shaped structure, and at least two groups of the fixing buckles (63) are provided and symmetrically distributed at the bottom of the cover (61).

6. The sealing structure of the plate and shell heat exchanger according to claim 1, characterized in that: The hook (64) is used to connect the spring (65) and the fixing buckle (63); the sum of the length of the hook (64) and the minimum length of the spring (65) is less than the height of the rubber seat (71); and the free end of the spring (65) is connected to the outer wall of the rubber seat (71).

7. The sealing structure of the plate and shell heat exchanger according to claim 3, characterized in that: The structure of the rubber seat (71) is the same as that of the cover (61); the outer wall of the rubber seat (71) moves to fit and contact the inner wall of the cover (61); and the adsorbent cotton (73) is a universal adsorbent material.

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