Up-down serial shell-and-tube heat exchanger
By designing the flow guiding components and sealing gaskets, combined with the shock absorption components and baffle structure, the problem of insufficient sealing in the upper and lower series shell-and-tube heat exchangers was solved, achieving higher sealing performance and equipment stability, and improving production efficiency.
Patent Information
- Application Number
- CN202423111529.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing shell-and-tube heat exchangers with tandem upper and lower tubes have insufficient sealing during use, leading to raw material leakage and damage, which affects production efficiency.
The design incorporates flow guiding components and sealing gaskets, combined with shock-absorbing components and baffle structures, to improve sealing performance and reduce liquid flow pressure and vibration. The sealing effect is achieved through the tight fit between the flow guiding tube and the sealing gasket, while the shock-absorbing gaskets alleviate vibration.
It improves the sealing performance of the heat exchanger, reduces the risk of leakage, extends the service life of the equipment, and increases production efficiency.
Smart Images
Figure CN223550948U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat exchangers, and in particular to a shell-and-tube heat exchanger connected in series. Background Technology
[0002] Shell-and-tube heat exchangers in series are a common type of heat exchange equipment with wide applications in many industrial sectors, such as chemical, petroleum, pharmaceutical, food, and power industries. In chemical production, they can be used for heat exchange in various chemical reactions, such as heating or cooling in ammonia synthesis and petroleum cracking. In petroleum refining, they can be used for heating crude oil and cooling heavy oil. In the pharmaceutical industry, they can be used for heating, cooling, and condensation operations in drug production. In food processing, they can be used for sterilization and cooling processes. In the power industry, they can be used in generator cooling systems.
[0003] In the tube side, one fluid enters the heat exchange tubes from one end of the tube sheet, flows along the tubes to the other end of the tube sheet, and then exits. In the shell side, another fluid enters from one end cap of the shell. Under the action of the baffles, the flow direction is constantly changed, and the fluid laterally washes the outer wall of the heat exchange tubes, exchanging heat with the fluid inside the tubes to achieve the effect of heat exchange, thereby improving the energy utilization rate.
[0004] In existing technologies, some shell-and-tube heat exchangers connected in series exhibit insufficient sealing, leading to material leakage and exposure to air, resulting in material damage and waste, and ultimately reducing production efficiency. Therefore, this paper proposes a shell-and-tube heat exchanger connected in series to address these problems. Summary of the Invention
[0005] To overcome the above deficiencies, this utility model provides a shell-and-tube heat exchanger connected in series, which aims to improve the problems of insufficient sealing and resonance in the operation of heat exchangers in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A shell-and-tube heat exchanger connected in series includes an upper shell. A first transfer chamber is fixedly connected to the left end of the upper shell. A flow guiding assembly is fixedly connected to the inner wall of the bottom end of the first transfer chamber. The flow guiding assembly includes a concave outer shell. The top end of the concave outer shell is fixedly connected to the inner wall of the bottom end of the first transfer chamber. Another flow guiding assembly is fixedly connected to the inner wall of the bottom end of the upper shell. A baffle tube is fixedly connected inside the concave outer shell. A first sealing gasket is fixedly connected to the bottom end of the baffle tube. A first flow guiding tube is fixedly connected inside the baffle tube. A second sealing gasket is fixedly connected to the bottom end of the concave outer shell. A convex outer shell is fixedly connected to the bottom end of the second sealing gasket. A second flow guiding tube is fixedly connected inside the convex outer shell. A vibration damping assembly for vibration reduction is fixedly connected to the outside of the convex outer shell.
[0008] As a further description of the above technical solution:
[0009] The shock absorption assembly includes a limiting ring, the inner wall of which is fixedly connected to the outside of the convex shell. A valve is rotatably connected to the inside of the convex shell, and a handle is rotatably connected to the outside of the convex shell. Multiple baffles are fixedly connected to the upper and lower ends of the inside of the upper shell, and multiple limiting plates are fixedly connected to the left and right ends of the inside of the upper shell. A cold connection port is fixedly connected to the bottom of the flow guiding assembly, and a transfer box is fixedly connected to the bottom end of the cold connection port. A lower shell is fixedly connected to the right side of the transfer box, and multiple limiting plates are fixedly connected to the left and right ends of the inside of the lower shell. Multiple baffles are fixedly connected to the upper and lower ends of the inside of the lower shell.
[0010] As a further description of the above technical solution:
[0011] Multiple pipes are fixedly connected inside each of the multiple baffles, and limiting plates are fixedly connected to both ends of each of the multiple pipes.
[0012] As a further description of the above technical solution:
[0013] A transfer compartment is fixedly connected to the right end of the lower housing, and a heat outlet is fixedly connected to the bottom right side of the lower housing.
[0014] As a further description of the above technical solution:
[0015] A cold outlet is fixedly connected to the top of the transfer box, and a hot inlet is fixedly connected to the top right side of the upper shell.
[0016] As a further description of the above technical solution:
[0017] The interior of the transfer box two is fixedly connected to a partition plate, and the bottom of the transfer box two is fixedly connected to a cold inlet.
[0018] As a further description of the above technical solution:
[0019] Two brackets are fixedly connected to both ends of the lower housing, and shock-absorbing pads are fixedly connected to the bottom of both brackets.
[0020] As a further description of the above technical solution:
[0021] A heat connection port is fixedly connected to the top left side of the lower housing, and a base plate is fixedly connected to the bottom ends of the two shock-absorbing pads.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the guide tube 2 inside the convex shell is embedded in the baffle and the sealing gasket 1 between the guide plate 1 inside the concave shell, so that they fit together. At the same time, the concave shell is tightly attached to the sealing gasket 2 on the top of the convex shell, so that the two connecting tubes fit together tightly, thereby achieving a sealing effect, improving the sealing performance and reducing the risk of leakage.
[0024] 2. In this utility model, the flow pressure of the liquid is reduced by baffle one and baffle two fixed inside the upper and lower shells. The hot inlet is equipped with a valve to regulate the flow rate of the raw liquid. The design of the pipe opening being wider at the top and narrower at the bottom makes the flow rate of the raw liquid and the flow velocity uniform, reducing the impact force of the liquid. The shock-absorbing pad installed at the bottom of the bracket further alleviates the vibration, thereby achieving the shock absorption effect, improving the product's service life and production efficiency. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a shell-and-tube heat exchanger connected in series according to the present invention.
[0026] Figure 2 This is a schematic diagram of the cold connection port of a shell-and-tube heat exchanger connected in series according to this utility model.
[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0029] Legend:
[0030] 1. Upper shell; 2. Transfer box one; 3. Transfer box two; 4. Concave shell; 5. Baffle pipe; 6. Sealing gasket one; 7. Guide pipe one; 8. Sealing gasket two; 9. Convex shell; 10. Guide pipe two; 11. Restriction ring; 12. Valve; 13. Handle; 14. Baffle one; 15. Limiting plate one; 16. Limiting plate two; 17. Baffle two; 18. Shock-absorbing pad; 19. Lower shell; 20. Transfer compartment; 21. Pipe; 22. Divider plate; 23. Cold outlet; 24. Hot inlet; 25. Cold connection port; 26. Hot connection port; 27. Cold inlet; 28. Hot outlet; 29. Base plate; 30. Support. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figures 1 to 3 This utility model provides an embodiment of a shell-and-tube heat exchanger connected in series, comprising an upper shell 1, with a uniquely shaped transfer box 2 tightly fixedly connected to the left end of the upper shell 1. A crucial flow guiding assembly is firmly fixedly connected to the inner wall of the bottom end of the transfer box 2. This flow guiding assembly consists of a concave shell 4, the top of which is securely fixed to the inner wall of the bottom end of the transfer box 2. Another flow guiding assembly with the same structure is also fixedly connected to the inner wall of the bottom end of the upper shell 1. A baffle tube 5 is tightly fixedly connected inside the concave shell 4, and a sealing gasket 6 with good sealing performance is carefully fixedly connected to the bottom end of the baffle tube 5. A flow guiding tube 7 is securely fixedly connected inside the baffle tube 5. A second sealing gasket 8 is tightly fixedly connected to the bottom end of the concave shell 4, and a convex shell 9 with a raised appearance is securely fixedly connected to the bottom end of the second sealing gasket 8. A guide pipe 10 is carefully fixedly connected inside the convex shell 9, while a set of shock-absorbing components for effective vibration reduction is fixedly connected to the outside of the convex shell 9. These shock-absorbing components can play an important role in vibration reduction during equipment operation, ensuring the stable operation of the equipment.
[0033] Reference Figures 2 to 4The shock-absorbing assembly includes a robust limiting ring 11, the inner wall of which is tightly fitted to the outside of the convex housing 9. A delicate valve 12 is rotatably connected inside the convex housing 9, while a convenient handle 13 is rotatably connected to its exterior. Multiple neatly arranged baffles 14 are securely connected to the upper and lower ends of the upper housing 1, and multiple precisely positioned limiting plates 15 are securely connected to the left and right ends of the upper housing 1. A crucial cold connection port 25 is tightly fixed to the bottom of the flow guide assembly, and a well-constructed transfer box 3 is securely fixed to the bottom end of the cold connection port 25. A lower housing 19 is tightly fixed to the right side of the transfer box 3, and multiple well-arranged limiting plates 16 are securely connected to the left and right ends of the lower housing 19, while multiple robust and durable baffles 17 are securely connected to the upper and lower ends of the lower housing 19.
[0034] Reference Figures 1 to 3 Multiple baffles 14 are internally and tightly connected to multiple orderly arranged pipes 21, both ends of which are securely connected to limiting plates 15. A spacious transfer chamber 20 is securely connected to the right end of the lower housing 19, and an important hot outlet 28 is securely connected to the bottom right side of the lower housing 19. A crucial cold outlet 23 is securely connected to the top of the transfer box 2, and an indispensable hot inlet 24 is securely connected to the top right side of the upper housing 1. A partition plate 22 is securely connected internally to the transfer box 3, and a necessary cold inlet 27 is securely connected to the bottom of the transfer box 3. Two sturdy supports 30 are securely connected to both ends of the lower housing 19, and shock-absorbing pads 18 with shock-absorbing function are securely connected to the bottom of the two supports 30. An important hot connection port 26 is securely connected to the top left side of the lower housing 19, and a flat base plate 29 is securely connected to the bottom of the two shock-absorbing pads 18.
[0035] Working principle: When using the heat exchanger, hot water enters the upper shell 1 through the hot inlet 24 and flows into the interior of the upper shell 1. Cold water enters the bottom of the transfer tank 2 3 through the cold inlet 27 and then flows into the lower half of the pipes 21 distributed inside the lower shell 19. It then flows into the transfer chamber 20 and, under pressure, enters the upper half of the pipes 21 inside the lower shell 19 and flows into the transfer tank 2 3. It then enters the bottom of the transfer tank 2 2 through the cold connection port 25 fixedly connected to the top of the transfer tank 2 3. It then repeats its movement in the lower shell 19, while exchanging heat with the hot water inside the upper shell 1. At the connection of the cold connection port 25... The internal guide tube 10 of the convex outer shell 9 is embedded in the sealing gasket 6 between the ground baffle tube 5 and the guide tube 7 inside the concave outer shell 4, so that they fit together. At the same time, the concave outer shell 4 is tightly attached to the sealing gasket 8 on the top of the convex outer shell 9, so that the two tubes fit together precisely and achieve a sealing effect. Similarly, the internal structure of the heat connection port 26 has the same structure to achieve a seal. The hot water inside the upper shell 1 flows into the interior of the lower shell 19 through the heat connection port 26 and exchanges heat with the cold water in the pipes 21 distributed inside the lower shell 19. After the exchange, the hot and cold water flow to the next process through the hot outlet 28 and the cold outlet 23 respectively.
[0036] When the heat exchanger is in operation, the internal liquid flow generates vibration. The baffles 14 and 17, which are evenly distributed inside the upper shell 1 and lower shell 19, reduce the liquid flow pressure and impact force by tilting the baffles 14 and 17, thus ensuring uniform flow inside the upper shell 1 and lower shell 19. A valve 12 is installed inside the hot inlet 24, and the handle 13 can control the direction of the valve 12 to regulate the flow rate of the raw liquid. The design of the cold connection port 25 and the hot connection port 26, which is wider at the top and narrower at the bottom, makes the flow rate of the raw liquid uniform and reduces the impact force of the liquid. The shock-absorbing pads 18 installed at the bottom of the bracket 30 further alleviate the vibration and reduce resonance.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A shell-and-tube heat exchanger connected in series, comprising an upper shell (1), characterized in that: The left end of the upper shell (1) is fixedly connected to a transfer box (2). The bottom inner wall of the transfer box (2) is fixedly connected to a flow guide assembly. The flow guide assembly includes a concave shell (4). The top of the concave shell (4) is fixedly connected to the bottom inner wall of the transfer box (2). The bottom inner wall of the upper shell (1) is fixedly connected to another flow guide assembly. The inside of the concave shell (4) is fixedly connected to a baffle (5). The bottom end of the baffle (5) is fixedly connected to a sealing gasket (6). The inside of the baffle (5) is fixedly connected to a flow guide pipe (7). The bottom end of the concave shell (4) is fixedly connected to a sealing gasket (8). The bottom end of the sealing gasket (8) is fixedly connected to a convex shell (9). The inside of the convex shell (9) is fixedly connected to a flow guide pipe (10). The outside of the convex shell (9) is fixedly connected to a shock-absorbing assembly for shock absorption.
2. The shell-and-tube heat exchanger in series according to claim 1, characterized in that: The shock absorption assembly includes a limiting ring (11), the inner wall of which is fixedly connected to the outside of the convex shell (9), a valve (12) is rotatably connected inside the convex shell (9), a handle (13) is rotatably connected to the outside of the convex shell (9), multiple baffles (14) are fixedly connected to the upper and lower ends of the upper shell (1), multiple limiting plates (15) are fixedly connected to the left and right ends of the upper shell (1), a cold connection port (25) is fixedly connected to the bottom of the flow guide assembly, a transfer box (3) is fixedly connected to the bottom end of the cold connection port (25), a lower shell (19) is fixedly connected to the right side of the transfer box (3), multiple limiting plates (16) are fixedly connected to the left and right ends of the lower shell (19), and multiple baffles (17) are fixedly connected to the upper and lower ends of the lower shell (19).
3. A shell-and-tube heat exchanger in series according to claim 2, characterized in that: Multiple pipes (21) are fixedly connected inside the multiple baffles (14), and the two ends of the multiple pipes (21) are fixedly connected to the limiting plate (15).
4. A shell-and-tube heat exchanger in series according to claim 2, characterized in that: The right end of the lower housing (19) is fixedly connected to a transfer chamber (20), and the bottom right end of the lower housing (19) is fixedly connected to a heat outlet (28).
5. A shell-and-tube heat exchanger in series according to claim 1, characterized in that: The top of the transfer box (2) is fixedly connected to a cold outlet (23), and the top right side of the upper shell (1) is fixedly connected to a hot inlet (24).
6. A shell-and-tube heat exchanger in series according to claim 2, characterized in that: The interior of the transfer box 2 (3) is fixedly connected to a partition plate (22), and the bottom of the transfer box 2 (3) is fixedly connected to a cold inlet (27).
7. A shell-and-tube heat exchanger in series according to claim 2, characterized in that: Two brackets (30) are fixedly connected to both ends of the lower housing (19), and shock-absorbing pads (18) are fixedly connected to the bottom ends of the two brackets (30).
8. A shell-and-tube heat exchanger in series according to claim 7, characterized in that: A heat connection port (26) is fixedly connected to the top left side of the lower housing (19), and a base plate (29) is fixedly connected to the bottom ends of the two shock-absorbing pads (18).