Novel inlet anti-impact device for shell-and-tube heat exchanger
By designing a sliding rod and buffer plate structure at the inlet of the shell-and-tube heat exchanger, the vibration problem caused by fluid scouring was solved, achieving stable and efficient heat exchange and cooling effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ZHENGNUO CHEM EQUIP CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-04-14
AI Technical Summary
In existing shell-and-tube heat exchangers, excessive fluid flow can cause the heat exchange tubes to vibrate and become unstable, leading to scouring.
A novel inlet anti-impact device for shell-and-tube heat exchangers was designed, comprising a sliding rod, a buffer plate, and a spring structure. The sliding rod and the buffer plate work together to buffer the impact force of the hot fluid, and the heat is cooled by the heat dissipation pipes and a waterproof fan.
It effectively stabilized the vibration of the heat exchange tubes, prevented scouring, improved heat exchange efficiency, and accelerated the cooling process.
Smart Images
Figure CN224121771U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shell-and-tube heat exchanger technology, specifically a novel inlet anti-impact device for shell-and-tube heat exchangers. Background Technology
[0002] A heat exchanger is a device that transfers part 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, etc., and are widely used.
[0003] In existing shell-and-tube heat exchangers, if the fluid entering the inlet is too large, it will directly scour the internal heat exchange tubes, causing vibration and instability of the entire heat exchange tube. Therefore, those skilled in the art have provided a novel inlet anti-scour device for shell-and-tube heat exchangers to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to provide a novel inlet anti-impact device for shell-and-tube heat exchangers to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel inlet anti-impact device for a shell-and-tube heat exchanger, comprising a shell, with circular tubes connected to both ends of the shell. One of the circular tubes is symmetrically provided with a cold fluid inlet pipe and a cold fluid outlet pipe, and the other circular tube is connected to a hot fluid inlet pipe. A connecting plate is fixedly connected to the inner wall of the other circular tube. A sliding rod is slidably connected through the top of the connecting plate. A second spring is sleeved on the outer wall of the sliding rod. The top of the second spring is fixedly connected to the bottom of the connecting plate, and the bottom of the second spring is fixedly connected to the bottom of the sliding rod. A second buffer plate is fixedly connected to the top of the sliding rod. A triangular bracket is fixedly connected to the bottom of the shell. A telescopic tube is fixedly connected to the top of the triangular bracket. A first spring is sleeved on the outer wall of the telescopic tube. The bottom of the first spring is fixedly connected to the top of the triangular bracket. A first buffer plate is fixedly connected to the telescopic end of the telescopic tube, and the bottom of the first buffer plate is fixedly connected to the top of the first spring. The top of the first buffer plate is in contact with the outer wall of the other circular tube. A heat exchange tube is fixedly embedded inside the shell.
[0006] As a further embodiment of this utility model: the second buffer plate is located directly below the hot fluid inlet pipe, and the hot fluid inlet pipe and the cold fluid inlet pipe are arranged opposite each other on the left and right.
[0007] As a further improvement of this utility model: a waterproof fan is fixedly connected to the inner wall of one of the circular tubes, and the air outlet of the waterproof fan is directly facing the heat exchange tube.
[0008] As a further improvement of this utility model: multiple heat dissipation pipes are arranged in a ring array on the outer wall of the outer shell, and the multiple heat dissipation pipes are fixedly embedded in the outer shell.
[0009] As a further improvement of this utility model: the top of the first buffer plate is provided with a plurality of spring-loaded protrusions arranged horizontally, and the spring-loaded protrusions are in contact with the outer wall of another round tube.
[0010] As a further embodiment of this utility model: the connecting plate is located on one side of the heat exchange tube, and the second buffer plate is located diagonally above the heat exchange tube.
[0011] As a further improvement of this utility model: the waterproof fan is located between the cold fluid inlet pipe and the cold fluid outlet pipe, and the cold fluid inlet pipe and the cold fluid outlet pipe are connected.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] Cold fluid can enter the outer shell through the cold fluid inlet pipe to cool the heat exchange tubes. The cold fluid outlet pipe can discharge the cold fluid. The hot fluid inlet pipe is used to enter the hot fluid. After entering the circular tube, the hot fluid can contact the second buffer plate. The second buffer plate will press down the sliding rod and stretch the second spring for buffering. Then the hot fluid will contact the heat exchange tube to absorb heat and perform heat exchange. When the circular tube under the hot fluid inlet pipe vibrates, it will contact the first buffer plate and the rebound protrusion. The rebound protrusion can press down the first spring and the telescopic tube for buffering, thus working with the second buffer plate to achieve the anti-impact effect. The heat on the outer shell can be discharged through multiple heat dissipation pipes for cooling.
[0014] This invention is simple to use. When hot fluid enters the circular tube, it can be protected by a double layer of buffer plate, second spring, first buffer plate, and first spring, thereby greatly stabilizing the circular tube and the outer shell. The outer shell can dissipate heat through multiple heat dissipation pipes, thereby accelerating the cooling process. Attached Figure Description
[0015] Figure 1 This is a three-dimensional schematic diagram of the entire utility model;
[0016] Figure 2 This is a three-dimensional schematic diagram of the cooling fluid outlet pipe of this utility model;
[0017] Figure 3 This is a three-dimensional exploded view of the present invention;
[0018] Figure 4 This is a cross-sectional view of the present invention;
[0019] Figure 5 This is a three-dimensional schematic diagram of the first buffer plate in this utility model.
[0020] In the diagram: 1. Outer shell; 2. Heat dissipation pipe; 3. Round pipe; 4. Cold fluid inlet pipe; 5. Connecting plate; 6. Cold fluid outlet pipe; 7. Waterproof fan; 8. Triangular bracket; 9. Rebound protrusion; 10. First buffer plate; 11. First spring; 12. Telescopic pipe; 13. Hot fluid inlet pipe; 14. Heat exchange pipe; 15. Second buffer plate; 16. Sliding rod; 17. Second spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1-5 In this embodiment of the utility model, the novel inlet anti-impact device for a shell-and-tube heat exchanger includes a shell 1, with circular pipes 3 connected to both ends of the shell 1. One circular pipe 3 has a cold fluid inlet pipe 4 and a cold fluid outlet pipe 6 symmetrically arranged on it, and the other circular pipe 3 is connected to a hot fluid inlet pipe 13. A connecting plate 5 is fixedly connected to the inner wall of the other circular pipe 3. A sliding rod 16 is slidably connected through the top of the connecting plate 5. A second spring 17 is sleeved on the outer wall of the sliding rod 16. The top end of the second spring 17 is fixedly connected to the bottom of the connecting plate 5, and the bottom end of the second spring 17 is fixedly connected to the bottom end of the sliding rod 16. A second buffer plate 15 is fixedly connected to the top of the sliding rod 16. A triangular bracket 8 is fixedly connected to the bottom of the shell 1, and a telescopic pipe 12 is fixedly connected to the top of the triangular bracket 8. A first spring 11 is fitted on the outer wall of the tube 12. The bottom end of the first spring 11 is fixedly connected to the top of the triangular bracket 8. A first buffer plate 10 is fixedly connected to the telescopic end of the telescopic tube 12. The bottom of the first buffer plate 10 is fixedly connected to the top of the first spring 11. The top of the first buffer plate 10 is in contact with the outer wall of another round tube 3. A heat exchange tube 14 is fixedly embedded inside the outer shell 1. Cold fluid can enter the outer shell 1 through the cold fluid inlet pipe 4 to cool the heat exchange tube 14. The cold fluid outlet pipe 6 can discharge the cold fluid. The hot fluid inlet pipe 13 is used to enter the hot fluid. After the hot fluid enters the round tube 3, it can contact the second buffer plate 15. The second buffer plate 15 will press down the sliding rod 16 and stretch the second spring 17 for buffering. Then the hot fluid will contact the heat exchange tube 14 to absorb heat.
[0023] In this embodiment, the second buffer plate 15 is located directly below the hot fluid inlet pipe 13, and the hot fluid inlet pipe 13 and the cold fluid inlet pipe 4 are arranged opposite each other from left to right.
[0024] In this embodiment, a waterproof fan 7 is fixedly connected to the inner wall of one of the circular tubes 3, and the air outlet of the waterproof fan 7 is directly facing the heat exchange tube 14. The waterproof fan 7 in the circular tube 3, which is not filled with cold fluid, can blow air toward the heat exchange tube 14 and then deliver cold air in a directional manner, thereby rapidly cooling the heat exchange tube 14.
[0025] In this embodiment, a plurality of heat dissipation pipes 2 are arranged in a ring array on the outer wall of the outer shell 1, and the plurality of heat dissipation pipes 2 are fixedly embedded in the outer shell 1.
[0026] In this embodiment, a plurality of spring-loaded protrusions 9 are arranged horizontally on the top of the first buffer plate 10, and the spring-loaded protrusions 9 are in contact with the outer wall of another round tube 3.
[0027] In this embodiment, the connecting plate 5 is located on one side of the heat exchange tube 14, and the second buffer plate 15 is located diagonally above the heat exchange tube 14.
[0028] In this embodiment, the waterproof fan 7 is located between the cold fluid inlet pipe 4 and the cold fluid outlet pipe 6, and the cold fluid inlet pipe 4 and the cold fluid outlet pipe 6 are connected.
[0029] The working principle of this utility model is as follows: Cold fluid can enter the outer shell 1 through the cold fluid inlet pipe 4 to cool the heat exchange tube 14. The cold fluid outlet pipe 6 can discharge the cold fluid. The hot fluid inlet pipe 13 is used to enter the hot fluid. After the hot fluid enters the circular tube 3, it can contact the second buffer plate 15. The second buffer plate 15 will press down the sliding rod 16 and stretch the second spring 17 for buffering. Then the hot fluid will contact the heat exchange tube 14 to absorb heat and thus perform heat exchange. When the circular tube 3 under the hot fluid inlet pipe 13 vibrates, it will contact the first buffer plate 10 and the rebound protrusion 9. The rebound protrusion 9 can press down the first spring 11 and the telescopic tube 12 for buffering, thus working with the second buffer plate 15 to achieve the anti-impact effect. The heat on the outer shell 1 can be discharged and cooled through multiple heat dissipation pipes 2. The waterproof fan 7 in the circular tube 3 that does not have cold fluid can blow air towards the heat exchange tube 14 and then deliver cold air in a directional manner, thereby quickly cooling the heat exchange tube 14.
[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A new type of inlet anti-collision device for a shell-and-tube heat exchanger, comprising a shell (1), characterized in that: Both ends of the outer shell (1) are connected to circular tubes (3). One of the circular tubes (3) is symmetrically provided with a cold fluid inlet pipe (4) and a cold fluid outlet pipe (6), and the other circular tube (3) is connected to a hot fluid inlet pipe (13). A connecting plate (5) is fixedly connected to the inner wall of the other circular tube (3). A sliding rod (16) is slidably connected through the top of the connecting plate (5). A second spring (17) is sleeved on the outer wall of the sliding rod (16). The top end of the second spring (17) is fixedly connected to the bottom of the connecting plate (5), and the bottom end of the second spring (17) is fixedly connected to the bottom end of the sliding rod (16). The top end of the sliding rod (16) is fixedly connected to the bottom of the connecting plate (5). A second buffer plate (15) is fixedly connected to the bottom of the outer shell (1). A triangular bracket (8) is fixedly connected to the top of the triangular bracket (8). A telescopic tube (12) is fixedly connected to the top of the telescopic tube (12). A first spring (11) is sleeved on the outer wall of the telescopic tube (12). The bottom end of the first spring (11) is fixedly connected to the top of the triangular bracket (8). The telescopic end of the telescopic tube (12) is fixedly connected to the first buffer plate (10). The bottom of the first buffer plate (10) is fixedly connected to the top of the first spring (11). The top of the first buffer plate (10) is in contact with the outer wall of another round tube (3). A heat exchange tube (14) is fixedly embedded inside the outer shell (1).
2. The shell and tube heat exchanger novel inlet anti-impact device according to claim 1, characterized in that: The second buffer plate (15) is located directly below the hot fluid inlet pipe (13), and the hot fluid inlet pipe (13) and the cold fluid inlet pipe (4) are arranged opposite each other.
3. The shell and tube heat exchanger novel inlet anti-impact device according to claim 1, characterized in that: A waterproof fan (7) is fixedly connected to the inner wall of one of the circular tubes (3), and the air outlet of the waterproof fan (7) is directly opposite the heat exchange tube (14).
4. The shell and tube heat exchanger novel inlet anti-impact device according to claim 1, characterized in that: Multiple heat dissipation pipes (2) are arranged in a ring array on the outer wall of the outer shell (1), and the multiple heat dissipation pipes (2) are fixedly embedded in the outer shell (1).
5. The shell and tube heat exchanger novel inlet anti-surge device as claimed in claim 1 wherein: The top of the first buffer plate (10) is provided with multiple spring-loaded protrusions (9) arranged horizontally, and the spring-loaded protrusions (9) are attached to the outer wall of another round tube (3).
6. The shell and tube heat exchanger novel inlet anti-surge device of claim 1, wherein: The connecting plate (5) is located on one side of the heat exchange tube (14), and the second buffer plate (15) is located diagonally above the heat exchange tube (14).
7. The novel inlet anti-impact device for shell-and-tube heat exchangers according to claim 3, characterized in that: The waterproof fan (7) is located between the cold fluid inlet pipe (4) and the cold fluid outlet pipe (6), and the cold fluid inlet pipe (4) and the cold fluid outlet pipe (6) are connected.