A shell-and-tube heat exchanger

Abstract

The utility model relates to heat exchange equipment technical field discloses a shell and tube heat exchanger, include: external frame, external frame place on ground, sealing structure, sealing structure includes first sealing part and second sealing part, first sealing part includes fixedly installed in the shell of external frame inside, the inside fixed mounting of shell has annular inner shell, both ends of annular inner shell all fixedly install a group of first sealing ring board, the outside of external frame is provided with two groups of second sealing ring board, and the side outer wall of first sealing ring board is in close contact with the side outer wall of second sealing ring board, second sealing part includes eight groups of first fixed link and eight groups of second fixed sleeve that set up in the outside of external frame, and one end of first fixed link is fixedly installed with first fixed sleeve, reach the purpose of limiting installation to sealing cover plate, strengthen the sealing effect of device junction, reduce the condition of medium seepage, improve the stability of device use, improve device use safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange equipment, specifically, it relates to a shell-and-tube heat exchanger. Background Technology

[0002] In industrial production, heat exchangers are key equipment for achieving heat exchange. However, existing heat exchangers often have many problems when dealing with materials with different properties.

[0003] Utility model patent CN222012807U relates to the field of heat exchanger technology and discloses a shell-and-tube heat exchanger, including a shell body. A tube-side medium inlet and a shell-side medium inlet are fixedly connected to the top and bottom of the shell body, respectively. A heat exchange structure is provided inside the shell body, and a scale collection structure is provided at the bottom. In this shell-and-tube heat exchanger, the heat exchange tubes penetrate through the heat exchange holes until the sealing ring contacts the upper connecting block. Fiberglass ropes clamp the upper and lower connecting blocks, facilitating the fixation of the heat exchange tubes to the tube sheet with appropriate clamping force. Furthermore, the scale collection structure allows scale generated inside the shell body during heat exchange to fall into a scale storage tank through a scale storage bin, and then be guided by a guide plate and discharged through a drain pipe, facilitating scale removal and preventing scale buildup that could reduce heat exchange efficiency.

[0004] However, the aforementioned patent still has the following problems: During the installation of shell-and-tube heat exchangers, due to factors such as the connection methods and material properties between components, gaps are very likely to appear at the joints after prolonged use. The presence of gaps will interfere with the normal flow of the medium, reduce the overall heat exchange efficiency of the heat exchanger, and the gaps may also become channels for medium leakage. Once medium leakage occurs, it will not only cause waste of materials and increase production costs, but may also pollute the surrounding environment.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the technical problem of gaps appearing at the connection points mentioned above, the basic concept of the technical solution adopted by this utility model is as follows: A shell-and-tube heat exchanger, comprising: External frame, the external frame is placed on the ground; The sealing structure includes a first sealing part and a second sealing part. The first sealing part includes a tube shell fixedly installed inside an outer frame. An annular inner shell is fixedly installed inside the tube shell. A set of first sealing ring plates is fixedly installed at both ends of the annular inner shell. Two sets of second sealing ring plates are provided outside the outer frame. One side of the outer wall of the first sealing ring plate is in close contact with one side of the outer wall of the second sealing ring plate. The second sealing part includes eight sets of first fixing rods and eight sets of second fixing sleeves provided outside the outer frame. A first fixing sleeve is fixedly installed at one end of the first fixing rod. A first threaded groove is opened inside the first fixing sleeve. A third fixing sleeve is fixedly installed inside the second fixing sleeve. A rotating rod is provided inside the third fixing sleeve. A threaded rod is fixedly installed at one end of the rotating rod. The threaded rod is helically installed inside the first threaded groove. Eight sets of first limiting holes are opened inside the first sealing ring plate and the second sealing ring plate. The first fixing sleeve and the third fixing sleeve are snapped into the first limiting holes.

[0007] In a preferred embodiment of the present invention, the second sealing part further includes a first connecting block fixedly installed on the top of the first fixing rod, a first fixing rod fixedly installed on one side outer wall of the first connecting block, a second connecting block fixedly installed on the top of the second fixing sleeve, a first limiting sleeve fixedly installed on one side outer wall of the second connecting block, a sliding groove opened inside the first limiting sleeve, a second limiting ring plate fixedly installed at one end of the first limiting sleeve, and a slider fixedly installed on the top of the first fixing rod, the slider being slidably installed inside the sliding groove.

[0008] In a preferred embodiment of the present invention, the second sealing part further includes a first limiting ring plate fixedly installed on the outer wall of the first fixing rod. The first limiting ring plate is disposed inside the first limiting sleeve. A damping spring rod is fixedly installed at one end of the first fixing rod, and one end of the damping spring rod is fixedly connected to one side of the inner wall of the first limiting sleeve.

[0009] In a preferred embodiment of this utility model, a set of first fixing ring plates and a set of second fixing ring plates are snapped together inside the annular inner shell. A first spiral plate is fixedly installed inside the first fixing ring plate, and a second spiral plate is fixedly installed inside the second fixing ring plate. Arc-shaped support plates are welded to the outer walls of the first and second spiral plates.

[0010] In a preferred embodiment of this utility model, the top of the tube shell is provided with two sets of holes, and a set of hot medium outlet and a set of cold medium inlet are fixedly installed in the holes respectively. One end of the hot medium outlet is fixedly connected to the inside of the first spiral plate, and one end of the cold medium inlet is fixedly connected to the inside of the second spiral plate.

[0011] In a preferred embodiment of the present invention, a first fixed circular plate is fixedly installed inside the second sealing ring plate, a connecting pipe is fixedly installed inside the first fixed circular plate, and a first connecting flange is fixedly installed on the outer wall of the connecting pipe.

[0012] In a preferred embodiment of this utility model, four sets of reinforcing plates are fixedly installed inside the external frame, and three sets of flow guide grooves are opened inside the arc-shaped support plate, the flow guide grooves being arc-shaped.

[0013] Compared with the prior art, the present invention has the following advantages: 1. To achieve the purpose of limiting the installation of the sealing cover plate, enhance the sealing effect at the connection of the device, reduce the leakage of the medium, improve the stability of the device and improve the safety of the device.

[0014] 2. To achieve the purpose of transporting and outputting hot and cold media, realize heat exchange operations, improve the heat exchange efficiency of the device, facilitate operation by workers, simplify the operation steps of the device, and improve the flexibility of the device in use.

[0015] 3. To provide auxiliary support for the device, improve its durability, extend its service life, and optimize the user experience.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled parts of this utility model; Figure 3 This is a schematic diagram of the first sealing ring plate structure of this utility model; Figure 4 This is a schematic diagram showing the disassembled first fixing rod and second fixing sleeve of this utility model; Figure 5 This is a schematic diagram showing the disassembled first and second fixing ring plates of this utility model; Figure 6 This is a schematic diagram of the arc-shaped support plate structure of this utility model.

[0018] In the diagram: 10. External frame; 11. Reinforcing plate; 12. Pipe shell; 13. Annular inner shell; 14. First sealing ring plate; 15. First limiting hole; 16. First spiral plate; 17. Second spiral plate; 18. Arc-shaped support plate; 19. First fixing ring plate; 20. Second fixing ring plate; 21. Hot medium outlet; 22. Cold medium inlet; 23. Second sealing ring plate; 24. First fixing circular plate; 25. Connecting material pipe; 26. First 27. Connecting flange; 28. First fixing rod; 29. ​​First fixing sleeve; 30. First threaded groove; 31. First connecting block; 32. Sliding block; 33. First limiting ring plate; 34. Damping spring rod; 35. Second fixing sleeve; 36. Third fixing sleeve; 37. Rotary rod; 38. Threaded rod; 39. Second connecting block; 40. First limiting sleeve; 41. Sliding groove; 42. Second limiting ring plate; 43. Guide groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0020] Example 1: A shell-and-tube heat exchanger, specifically as follows Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the system includes an external frame 10, which is placed on the ground; a sealing structure, comprising a first sealing part and a second sealing part. The first sealing part includes a tube shell 12 fixedly installed inside the external frame 10, an annular inner shell 13 fixedly installed inside the tube shell 12, and a set of first sealing ring plates 14 fixedly installed at both ends of the annular inner shell 13. Two sets of second sealing ring plates 23 are provided on the outside of the external frame 10, with one side of the outer wall of the first sealing ring plate 14 closely abutting one side of the outer wall of the second sealing ring plate 23. The second sealing part includes eight sets of first fixing rods 27 and eight sets of second sealing rods 28 disposed outside the external frame 10. Two fixed sleeves 35, one end of the first fixed rod 27 is fixedly installed with a first fixed sleeve 28, the first fixed sleeve 28 has a first threaded groove 29 inside, the second fixed sleeve 35 has a third fixed sleeve 36 fixedly installed inside, the third fixed sleeve 36 has a rotating rod 37 inside, one end of the rotating rod 37 is fixedly installed with a threaded rod 38, the threaded rod 38 is spirally installed inside the first threaded groove 29, the first sealing ring plate 14 and the second sealing ring plate 23 both have eight sets of first limiting holes 15 inside, the first fixed sleeve 28 and the third fixed sleeve 36 are snapped into the first limiting holes 15 inside. The device is sealed and fixed by a sealing structure. One side of the outer wall of the second sealing ring plate 23 is tightly attached to one side of the outer wall of the first sealing ring plate 14. The first fixing sleeve 28 and the third fixing sleeve 36 are snapped into the inside of the first limiting hole 15. The rotating rod 37 is rotated to screw the threaded rod 38 into the inside of the first threaded groove 29. The first fixing rod 27 and the third fixing sleeve 36 are limited and installed between the first sealing ring plate 14 and the second sealing ring plate 23.

[0021] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the second sealing part also includes a first connecting block 30 fixedly installed on the top of the first fixing rod 27. A first fixing rod 31 is fixedly installed on one outer wall of the first connecting block 30. A second connecting block 39 is fixedly installed on the top of the second fixing sleeve 35. A first limiting sleeve 40 is fixedly installed on one outer wall of the second connecting block 39. A sliding groove 41 is opened inside the first limiting sleeve 40. A second limiting ring plate 42 is fixedly installed at one end of the first limiting sleeve 40. A slider 32 is fixedly installed on the top of the first fixing rod 31. The slider 32 is slidably installed inside the sliding groove 41. Pulling the second connecting block 39 causes the slider 32 to slide inside the sliding groove 41, adjusting the distance between the first connecting block 30 and the second connecting block 39, and placing the third fixing sleeve 36 and the first fixing sleeve 28 inside the first limiting hole 15.

[0022] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the second sealing part also includes a first limiting ring plate 33 fixedly installed on the outer wall of the first fixing rod 31. The first limiting ring plate 33 is disposed inside the first limiting sleeve 40. A damping spring rod 34 is fixedly installed at one end of the first fixing rod 31, and one end of the damping spring rod 34 is fixedly connected to one side inner wall of the first limiting sleeve 40. When the first connecting block 30 and the second connecting block 39 are released, the slider 32 is driven to move inside the slide groove 41 through the damping spring rod 34, so that the outer walls of the first connecting block 30 and the second connecting block 39 are respectively in close contact with one side outer wall of the first sealing ring plate 14 and the second sealing ring plate 23.

[0023] Based on the above, the structure of the external frame 10, reinforcing plate 11, pipe shell 12, annular inner shell 13, first sealing ring plate 14, first limiting hole 15, second sealing ring plate 23, first fixing rod 27, first fixing sleeve 28, first threaded groove 29, first connecting block 30, first fixing rod 31, slider 32, first limiting ring plate 33, damping spring rod 34, second fixing sleeve 35, third fixing sleeve 36, rotating rod 37, threaded rod 38, second connecting block 39, first limiting sleeve 40, sliding groove 41, and second limiting ring plate 42 achieves the purpose of limiting the installation of the sealing cover plate, strengthening the sealing effect at the device connection, reducing media leakage, improving the stability of the device, and enhancing the safety of the device.

[0024] Example 2: Based on Example 1, specifically as follows... Figure 1 and Figure 5 As shown, a set of first fixing ring plates 19 and a set of second fixing ring plates 20 are snap-fitted into the interior of the annular inner shell 13. A first spiral plate 16 is fixedly installed inside the first fixing ring plate 19, and a second spiral plate 17 is fixedly installed inside the second fixing ring plate 20. Arc-shaped support plates 18 are welded to the outer walls of the first spiral plate 16 and the second spiral plate 17. The first fixing ring plate 19 and the second fixing ring plate 20 are placed inside the annular inner shell 13, and the first spiral plate 16 and the second spiral plate 17 are further supported by the arc-shaped support plates 18.

[0025] Specifically, such as Figure 1 and Figure 2 As shown, the top of the tube shell 12 has two sets of holes, each containing a set of hot medium outlet 21 and a set of cold medium inlet 22. One end of the hot medium outlet 21 is fixedly connected to the interior of the first spiral plate 16, and one end of the cold medium inlet 22 is fixedly connected to the interior of the second spiral plate 17. The hot and cold media are transported and output through the hot medium outlet 21 and the cold medium inlet 22.

[0026] Specifically, such as Figure 1 and Figure 2As shown, a first fixed circular plate 24 is fixedly installed inside the second sealing ring plate 23, and a connecting pipe 25 is fixedly installed inside the first fixed circular plate 24. A first connecting flange 26 is fixedly installed on the outer wall of the connecting pipe 25. One set of connecting pipes 25 inputs hot medium, and the other set of connecting pipes 25 outputs cold medium. The connecting pipes 25 and the pipeline are connected through the first connecting flange 26.

[0027] Based on the above, the structure consisting of an external frame 10, a first spiral plate 16, a second spiral plate 17, an arc-shaped support plate 18, a first fixed ring plate 19, a second fixed ring plate 20, a hot medium outlet 21, a cold medium inlet 22, a second sealing ring plate 23, a first fixed circular plate 24, a connecting pipe 25, and a first connecting flange 26 achieves the purpose of conveying and outputting hot and cold media, realizing heat exchange operations, improving the heat exchange efficiency of the device, facilitating worker operation, simplifying the operation steps of the device, and improving the flexibility of the device's use.

[0028] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 , Figure 2 and Figure 6 As shown, four sets of reinforcing plates 11 are fixedly installed inside the external frame 10, and three sets of flow channels 43 are opened inside the arc-shaped support plate 18. The flow channels 43 are arc-shaped. The medium is transported through the flow channels 43, the first spiral plate 16 and the second spiral plate 17 are supported by the arc-shaped support plate 18, and the external frame 10 is reinforced by the reinforcing plates 11.

[0029] In summary, the structure of the external frame 10, reinforcing plate 11, first spiral plate 16, second spiral plate 17, arc-shaped support plate 18, and guide channel 43 achieves the purpose of providing auxiliary support for the device, improving the device's durability, extending its service life, and optimizing the user experience.

[0030] Working principle: The sealing structure is divided into a first sealing part and a second sealing part. In the first sealing part, the tube shell 12 is fixed inside the outer frame 10, and the annular inner shell 13 is inside the tube shell 12. Both ends of the inner shell 13 have first sealing ring plates 14, and the outer frame 10 has a second sealing ring plate 23. The outer walls of both are tightly attached to each other. In the second sealing part, the first fixing sleeve 28 at one end of the first fixing rod 27 has a first threaded groove 29. The third fixing sleeve 36 inside the second fixing sleeve 35 has a rotating rod 37 and a threaded rod 38. The threaded rod 38 can be screwed into the first threaded groove 29. The first sealing ring plate 14 and the second sealing ring plate 23 have first limiting holes 15. The first fixing sleeve 28 and the third fixing sleeve 36 are inserted into the first limiting holes 15 and rotated. Rod 37 screws threaded rod 38 into first threaded groove 29, achieving limited installation of first fixed rod 27 and third fixed sleeve 36 between first and second sealing ring plates; simultaneously, the first fixed rod 31 is located on the first connecting block 30 at the top of the first fixed rod 27, and the first limiting sleeve 40 is located on the second connecting block 39 at the top of the second fixed sleeve 35. The first limiting sleeve 40 has a sliding groove 41 and a second limiting ring plate 42. The slider 32 at the top of the first fixed rod 31 slides in the sliding groove 41. Pulling the second connecting block 39 can adjust the distance between the first and second connecting blocks, allowing the third fixed sleeve 36 and the first fixed sleeve 28 to be placed into the first limiting hole 15; the first limiting hole 15 is located on the outer wall of the first fixed rod 31. The ring plate 33 is located inside the first limiting sleeve 40. One end of the ring plate 33 is connected to the inner wall of one side of the first limiting sleeve 40 by a damping spring rod 34. When the first and second connecting blocks are released, the damping spring rod 34 drives the slider 32 to move, so that the outer walls of the first and second connecting blocks are tightly pressed against the outer walls of one side of the first and second sealing ring plates, respectively. The first fixed ring plate 19 and the second fixed ring plate 20 are snapped into the annular inner shell 13. The first fixed ring plate 19 contains a first spiral plate 16, and the second fixed ring plate 20 contains a second spiral plate 17. The outer walls of the two are welded with arc-shaped support plates 18. The first and second fixed ring plates are placed into the annular inner shell 13, and the arc-shaped support plates 18 provide auxiliary support for the first and second spiral plates. The top of the tube shell 12... A hot medium outlet 21 and a cold medium inlet 22 are fixed inside the hole. One end of the hot medium outlet 21 is fixedly connected to the inside of the first spiral plate 16, and one end of the cold medium inlet 22 is fixedly connected to the inside of the second spiral plate 17. It is used to transport and output hot and cold media. There is a connecting pipe 25 inside the first fixed circular plate 24 inside the second sealing ring plate 23. The outer wall of the connecting pipe 25 has a first connecting flange 26. One set of connecting pipes 25 inputs hot medium and the other set outputs cold medium. The pipes are connected through the first connecting flange 26. There are four sets of reinforcing plates 11 inside the external frame 10 for reinforcement. There are three sets of arc-shaped guide grooves 43 inside the arc-shaped support plate 18 for transporting media.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A shell-and-tube heat exchanger, characterized in that, include: An external frame (10) is placed on the ground; The sealing structure includes a first sealing part and a second sealing part. The first sealing part includes a tube shell (12) fixedly installed inside the outer frame (10). An annular inner shell (13) is fixedly installed inside the tube shell (12). A set of first sealing ring plates (14) are fixedly installed at both ends of the annular inner shell (13). Two sets of second sealing ring plates (23) are provided on the outside of the outer frame (10). One side of the outer wall of the first sealing ring plate (14) is in close contact with one side of the outer wall of the second sealing ring plate (23). The second sealing part includes eight sets of first fixing rods (27) and eight sets of second fixing sleeves (35) provided on the outside of the outer frame (10). The first fixing rods (27) One end of the first fixed sleeve (28) is fixedly installed. The first fixed sleeve (28) has a first threaded groove (29) inside. The second fixed sleeve (35) has a third fixed sleeve (36) fixedly installed inside. The third fixed sleeve (36) has a rotating rod (37) inside. One end of the rotating rod (37) has a threaded rod (38) fixedly installed. The threaded rod (38) is spirally installed inside the first threaded groove (29). The first sealing ring plate (14) and the second sealing ring plate (23) each have eight sets of first limiting holes (15) inside. The first fixed sleeve (28) and the third fixed sleeve (36) are snapped into the first limiting holes (15).

2. The shell-and-tube heat exchanger according to claim 1, characterized in that, The second sealing part also includes a first connecting block (30) fixedly installed on the top of the first fixing rod (27), a first fixing rod (31) fixedly installed on one side of the outer wall of the first connecting block (30), a second connecting block (39) fixedly installed on the top of the second fixing sleeve (35), a first limiting sleeve (40) fixedly installed on one side of the outer wall of the second connecting block (39), a sliding groove (41) is provided inside the first limiting sleeve (40), a second limiting ring plate (42) is fixedly installed at one end of the first limiting sleeve (40), a slider (32) is fixedly installed on the top of the first fixing rod (31), and the slider (32) is slidably installed inside the sliding groove (41).

3. The shell-and-tube heat exchanger according to claim 1, characterized in that, The second sealing part also includes a first limiting ring plate (33) fixedly installed on the outer wall of the first fixing rod (31). The first limiting ring plate (33) is disposed inside the first limiting sleeve (40). A damping spring rod (34) is fixedly installed at one end of the first fixing rod (31). One end of the damping spring rod (34) is fixedly connected to the inner wall of one side of the first limiting sleeve (40).

4. The shell-and-tube heat exchanger according to claim 1, characterized in that, The annular inner shell (13) is internally fitted with a set of first fixed ring plates (19) and a set of second fixed ring plates (20). The first fixed ring plate (19) is internally fitted with a first spiral plate (16), and the second fixed ring plate (20) is internally fitted with a second spiral plate (17). The outer walls of the first spiral plate (16) and the second spiral plate (17) are welded with arc-shaped support plates (18).

5. The shell-and-tube heat exchanger according to claim 1, characterized in that, The top of the tube shell (12) is provided with two sets of holes, and a set of hot medium outlet (21) and a set of cold medium inlet (22) are fixedly installed in the holes respectively. One end of the hot medium outlet (21) is fixedly connected to the inside of the first spiral plate (16), and one end of the cold medium inlet (22) is fixedly connected to the inside of the second spiral plate (17).

6. The shell-and-tube heat exchanger according to claim 1, characterized in that, The second sealing ring plate (23) has a first fixed circular plate (24) fixedly installed inside, the first fixed circular plate (24) has a connecting pipe (25) fixedly installed inside, and the connecting pipe (25) has a first connecting flange (26) fixedly installed on the outer wall of the connecting pipe (25).

7. The shell-and-tube heat exchanger according to claim 1, characterized in that, The external frame (10) has four sets of reinforcing plates (11) fixedly installed inside, and the arc-shaped support plate (18) has three sets of guide grooves (43) inside, which are arc-shaped.

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