Rectangular all-welded plate heat exchanger

Abstract

The utility model relates to the technical field of plate heat exchangers, and discloses a rectangular all-welded plate heat exchanger which comprises a supporting seat and a fixing plate, a heat exchanger is fixedly connected in the fixing plate, a buffer assembly is arranged on the upper surface of the supporting seat, and the buffer assembly is used for reducing vibration force generated in the running process of equipment. The buffer assembly comprises a connecting plate, the bottom of the connecting plate is fixedly connected to the upper surface of the supporting seat, an extrusion block is fixedly connected to the upper surface of the connecting plate, an air chamber is fixedly connected to the outer wall of the extrusion block, and a protection assembly is arranged on one side of the heat exchanger and used for further preventing material leakage. According to the utility model, the transmission plate slides in the air chamber, so that the transmission shaft is further driven to slide on the outer wall of the sliding column, the effect of quickly and effectively absorbing the vibration force generated in the use process of the equipment is realized, the problem that the traditional equipment is difficult to deal with vibration during operation is solved, and the working efficiency of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger technology, and in particular to a rectangular fully welded plate heat exchanger. Background Technology

[0002] As an important heat exchange device, heat exchangers are widely used in many industrial fields. With the continuous development of modern industry, the requirements for heat exchange efficiency, equipment stability and operational safety are increasing. In industries such as chemical, petroleum, power and pharmaceutical, it is often necessary to handle fluids with different temperatures, pressures and chemical properties. Rectangular fully welded plate heat exchangers can better meet these complex working conditions due to their unique structural advantages. They are mainly composed of multiple corrugated metal plates that are sealed and connected by a fully welded process to form independent medium flow channels. This structure makes them have higher heat exchange efficiency than traditional shell and tube heat exchangers. The corrugated design of the plates increases the heat exchange area and enhances the turbulence of the fluid.

[0003] In previous applications of rectangular fully welded plate heat exchangers, the common mechanical structures mainly focused on the connection and support of the basic inlet and outlet pipes. The inlet and outlet pipes mostly adopted a flange connection structure. By welding flanges at the fluid inlet and outlet of the heat exchanger, and then using bolts to fasten them to the flanges of the external pipes, a sealing gasket was placed in the middle to ensure the sealing effect, thereby realizing the introduction and export of fluid. As for the support structure, it generally relied on a base bracket made of welded steel profiles at the bottom to provide a stable foundation for the heat exchanger, ensuring that the equipment could stand stably on the ground or the corresponding installation platform during operation.

[0004] However, existing rectangular fully welded plate heat exchangers have a prominent problem in actual operation: at the connection points between the connecting pipes and the heat exchanger body, as well as with other connected pipes, the internal fluid is in a continuous flow state during heat exchanger operation. Especially during equipment start-up and shutdown, and frequent flow fluctuations, significant vibration and impact forces are generated. Moreover, external interference factors are unavoidable in the industrial environment, such as vibration transmission from nearby equipment and accidental collisions. These forces act together at the connection points of the connecting pipes, resulting in severe stress concentration at these points. This can easily lead to loosening, deformation, or even damage at the connection points, seriously affecting the stability of the connection and the overall sealing of the equipment. This greatly hinders the normal and safe operation of the heat exchanger and may also lead to a decrease in heat exchange efficiency, increased equipment maintenance costs, and safety risks. Therefore, a rectangular fully welded plate heat exchanger is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a rectangular fully welded plate heat exchanger, which aims to improve the problem that the vibration generated by traditional equipment during operation is often directly transmitted to the support frame and the entire support structure system connected to it, thereby affecting the overall structural stability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rectangular fully welded plate heat exchanger includes a support base and a fixed plate. The heat exchanger is fixedly connected inside the fixed plate. A buffer assembly is provided on the upper surface of the support base. The buffer assembly is used to reduce the vibration force generated during the operation of the equipment.

[0008] The buffer assembly includes a connecting plate, the bottom of which is fixedly connected to the upper surface of the support base. A pressing block is fixedly connected to the upper surface of the connecting plate. An air chamber is fixedly connected to the outer wall of the pressing block. A transmission plate is slidably connected inside the air chamber. A transmission shaft is fixedly connected to both sides of the transmission plate. A sliding column is slidably connected to the inner wall of the transmission shaft. A spring is provided on the outer wall of the transmission shaft. One end of the spring is fixedly connected to the bottom of the transmission plate, and the other end is fixedly connected to the upper surface of the connecting plate. A protective assembly is provided on one side of the heat exchanger to further prevent material leakage.

[0009] As a further description of the above technical solution:

[0010] The protective assembly includes a U-shaped plate and a rotating block. The U-shaped plate slides on the outer wall of the heat exchanger, and the rotating block is rotatably connected to one side of the U-shaped plate.

[0011] As a further description of the above technical solution:

[0012] A connecting pipe is slidably connected to the inner wall of the U-shaped plate, and a second U-shaped plate is rotatably connected to one side of the rotating block;

[0013] As a further description of the above technical solution:

[0014] Both the inner walls of the second U-shaped plate and the first U-shaped plate are fixedly connected with sealing rings, and a fixing block is fixedly connected to one side of the second U-shaped plate.

[0015] As a further description of the above technical solution:

[0016] The fixing block has a fixing groove inside, and a connecting block is fixedly connected to one side of the U-shaped plate;

[0017] As a further description of the above technical solution:

[0018] A connecting frame is fixedly connected to one side of the connecting block, and a lever is slidably connected inside the connecting frame;

[0019] As a further description of the above technical solution:

[0020] The lever is slidably connected to a limiting post inside. A second spring is provided on the outer wall of the limiting post. One end of the second spring is fixedly connected to one side of the lever, and the other end is fixedly connected to the inner wall of the limiting post.

[0021] As a further description of the above technical solution:

[0022] One end of the lever is fixedly connected to a locking block, which fits into the fixing groove.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the transmission plate slides inside the air chamber, thereby driving the transmission shaft to slide on the outer wall of the sliding column. During the movement of the transmission plate, the spring is forced to undergo elastic deformation, thereby achieving the effect of quickly and effectively absorbing the vibration force generated during the use of the equipment. This solves the problem that traditional equipment lacks a sufficiently effective buffer and fixing mechanism during operation, making it difficult to cope with vibration, and improves the working efficiency of the equipment.

[0025] 2. In this utility model, by attaching the U-shaped plate to the heat exchanger and simultaneously pulling the lever, the spring 2 is elastically deformed under the pulling force. The elastic deformation of the spring 2 further drives the movement of the locking block. When the locking block is attached to the fixing groove, the elastic performance of the spring 2 is released, pushing the locking block into the fixing groove. This achieves the effect of quick connection and further fixing of the heat exchanger and the connecting pipe, thus solving the problem of relative displacement at the connection between the heat exchanger and the connecting pipe in traditional equipment, which affects the sealing effect and causes fluid leakage. This improves the working stability and safety of the equipment. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of the rectangular fully welded plate heat exchanger proposed in this utility model.

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a structural schematic diagram of the cross-sectional view of the gas chamber of the rectangular fully welded plate heat exchanger proposed in this utility model.

[0029] Figure 4 for Figure 1 Enlarged view of point B in the middle;

[0030] Figure 5 This is a schematic diagram of the U-shaped plate of the rectangular fully welded plate heat exchanger proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of the connecting block of the rectangular fully welded plate heat exchanger proposed in this utility model.

[0032] Legend:

[0033] 1. Support base; 2. Fixing plate; 3. Heat exchanger; 4. Connecting plate; 5. Extrusion block; 6. Gas chamber; 7. Transmission plate; 8. Transmission shaft; 9. Sliding column; 10. Spring 1; 11. Connecting pipe; 12. U-shaped plate 1; 13. Rotating block; 14. U-shaped plate 2; 15. Sealing ring; 16. Fixing block; 17. Fixing groove; 18. Connecting block; 19. Connecting frame; 20. Lever; 21. Limiting column; 22. Spring 2; 23. Locking block. Detailed Implementation

[0034] 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.

[0035] Reference Figure 1 - Figure 3 An embodiment of this utility model is provided: a rectangular fully welded plate heat exchanger, including a support base 1 and a fixed plate 2. A heat exchanger 3 is fixedly connected inside the fixed plate 2. The heat exchanger 3 adopts a high-efficiency heat exchange structure, which can effectively improve the heat transfer efficiency. A buffer component is provided on the upper surface of the support base 1. The buffer component is used to reduce the vibration force generated by the equipment during operation.

[0036] The buffer assembly includes a connecting plate 4, the bottom of which is fixedly connected to the upper surface of the support base 1. A compression block 5 is fixedly connected to the upper surface of the connecting plate 4. The function of the compression block 5 is to reduce the impact force of the equipment during operation through pressure transmission and buffering. An air chamber 6 is fixedly connected to the outer wall of the compression block 5. The air chamber 6 can not only withstand greater pressure, but also provide sufficient compression space for the buffer assembly to absorb vibrations and impacts caused by the external environment or the operation of internal equipment. A transmission plate 7 is slidably connected inside the air chamber 6. A transmission shaft 8 is fixedly connected to both sides of the transmission plate 7. A sliding column 9 is slidably connected to the inner wall of the transmission shaft 8. The sliding column 9 is used to ensure the smooth sliding of the transmission shaft 8 during operation, reduce friction, and improve the overall operating efficiency. A spring 10 is provided on the outer wall of the transmission shaft 8. The function of the spring 10 is to provide buffering force and adjust the recovery ability of the overall structure, so that the equipment recovers more smoothly after being subjected to force. One end of the spring 10 is fixedly connected to the bottom of the transmission plate 7, and the other end is fixedly connected to the upper surface of the connecting plate 4. A protective assembly is provided on one side of the heat exchanger 3 to further prevent material leakage.

[0037] Specifically, when the flow rate of the fluid processed by heat exchanger 3 frequently changes significantly, such as in some intermittent chemical processes where the fluid supply is frequently adjusted according to different production stages, this fluctuation in flow rate can cause unstable impact forces as the fluid flows through the pipes and inside heat exchanger 3. This subjects the entire equipment to alternating forces, easily leading to vibration. Firstly, the transmission plate 7 slides along the inner wall of the air chamber 6, generating a stable motion. The sliding of the transmission plate 7 not only helps transmit power but also generates a certain airflow effect through friction with the inner wall of the air chamber 6, thereby assisting in pressure absorption and vibration damping of the equipment. When the transmission plate 7... When it starts moving, it drives the symmetrical drive shafts 8 on both sides to move synchronously. When the drive shafts 8 move, they cause the built-in springs 10 to deform elastically. When subjected to external pressure, the springs 10 can effectively absorb and disperse the pressure and release some energy through elastic deformation, thereby reducing the impact and vibration on the overall equipment. At the same time, the drive shafts 8 slide on the outer wall of the sliding column 9. The function of the sliding column 9 is to provide stable guidance for the drive shafts 8 and ensure that the drive shafts 8 remain balanced and smooth during movement. During the sliding of the drive shafts 8, the sliding column 9 effectively prevents the springs 10 from being damaged due to excessive deformation or displacement.

[0038] Reference Figure 4 - Figure 6The protective assembly includes a U-shaped plate 12 and a rotating block 13. The U-shaped plate 12 slides on the outer wall of the heat exchanger 3 and is connected to the outer wall of the heat exchanger 3 by sliding, ensuring that it can move freely along the outer wall of the heat exchanger 3 within a certain range. The rotating block 13 is rotatably connected to one side of the U-shaped plate 12, allowing the U-shaped plate 12 to rotate or adjust its angle when subjected to external force, thereby further optimizing the working state of the protective assembly. A connecting pipe 11 is slidably connected to the inner wall of the U-shaped plate 12, and a U-shaped... Sealing rings 15 are fixedly connected to the inner walls of plate 14, U-shaped plate 14 and U-shaped plate 12. The main function of sealing rings 15 is to ensure the sealing effect between U-shaped plate 12 and U-shaped plate 14, and to prevent material leakage due to vibration or temperature difference during equipment operation. A fixing block 16 is fixedly connected to one side of U-shaped plate 14. The fixing block 16 has a fixing groove 17 inside. The fixing groove 17 is used to cooperate with the locking block 23 to achieve quick fixing and unlocking. A connecting block 18 is fixedly connected to one side of U-shaped plate 12.

[0039] Specifically, when heat exchanger 3 is installed in an environment with many vibration sources, and these vibrations are transmitted to heat exchanger 3 through the ground, connected pipes, etc., if only conventional connection and support methods are used, heat exchanger 3 is easily affected by vibration, resulting in problems such as loose connections and deformation of support frames. The operator first fits U-shaped plate 12 with heat exchanger 3 to ensure that there is no gap between the contact surface of heat exchanger 3 and U-shaped plate 12. When the operator pulls U-shaped plate 12, one side of U-shaped plate 12 will slide inside rotating block 13. Rotating block 13 allows U-shaped plate 12 to slide smoothly, avoiding movement obstruction or damage due to excessive friction. At the same time, the other side of U-shaped plate 12 will shift due to the pulling force, pushing connecting block 18 to move synchronously. The movement of connecting block 18, through its cooperation with other components, further drives connecting frame 19 to move along a predetermined track.

[0040] Reference Figure 4 - Figure 6A connecting frame 19 is fixedly connected to one side of the connecting block 18. The connecting frame 19 takes into account the strength and stability of the structure to ensure that it can effectively withstand external pressure and impact during operation. A lever 20 is slidably connected inside the connecting frame 19. The two sides of the lever 20 are combined with the connecting frame 19 through a slide rail structure, which ensures the smooth sliding of the lever 20 and reduces frictional resistance, thereby improving its operational sensitivity and durability. A limit post 21 is slidably connected inside the lever 20 to limit and guide the movement of the second spring 22 and prevent it from being damaged due to excessive deformation. The second spring 22 is provided on the outer wall of the limit post 21 to play a buffering role. At the same time, the restoring force pushes the locking block 23 to move. One end of the second spring 22 is fixedly connected to one side of the lever 20, and the other end is fixedly connected to the inner wall of the limit post 21. A locking block 23 is fixedly connected to one end of the lever 20, and the locking block 23 fits into the fixing groove 17.

[0041] Specifically, as the connecting frame 19 moves, the operator then pulls the lever 20. The connection between the lever 20 and the internal mechanism allows its action to be effectively transmitted to the second spring 22, causing the second spring 22 to undergo elastic deformation. During the elastic deformation of the second spring 22, its function is to absorb external pressure or vibration, alleviate the workload of the device, and provide a reverse restoring force. At the same time, the deformation of the second spring 22 will drive the locking block 23 to move synchronously with its change. The shape and size of the locking block 23 are precisely matched with the fixing groove 17. When the locking block 23 is engaged with the fixing groove 17, the accumulated elastic potential energy of the locking block 23 is released, and the locking block 23 is quickly pushed into the fixing groove 17 to complete the fixation. In this process, the elastic potential energy of the locking block 23 plays a locking role, so that the device can remain firm and stable in the working state, preventing accidental loosening or displacement, greatly improving the safety and durability of the device, and enabling it to operate stably for a long time under high load conditions.

[0042] Working Principle: When the device is subjected to external forces or vibrations generated by its own movement during operation, the transmission plate 7 slides on the inner wall of the air chamber 6, causing the symmetrical transmission shafts 8 on both sides to move synchronously. When the transmission shafts 8 move, they cause the spring 10 to undergo elastic deformation, simultaneously causing the transmission shaft 8 to slide on the outer wall of the sliding column 9. The elastic deformation of the spring 10 effectively absorbs and buffers the pressure on the entire device. The sliding of the transmission shaft 8 on the outer wall of the sliding column 9 prevents the spring 10 from being damaged due to excessive deformation or displacement. Simultaneously, the sliding of the transmission plate 7 on the outer wall of the air chamber 6 effectively compresses the air inside, thus assisting in pressure absorption and reducing equipment vibration. The operator attaches the U-shaped plate 12 to the heat exchanger 3 and pulls it so that one side slides inside the rotating block 13. The other side will shift under the pulling force, thereby driving the connecting block 18 to move synchronously. When the connecting block 18 moves, it will further drive the connecting frame 19 to move. The operator pulls the lever 20, which causes the spring 22 to deform elastically. As the spring 22 deforms elastically, the locking block 23 will move synchronously with its deformation. When the locking block 23 is engaged with the fixing groove 17, the elastic potential energy of the locking block 23 is released, pushing the locking block 23 into the fixing groove 17 to achieve fixation, thereby further improving the stability of the device.

[0043] 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 rectangular fully welded plate heat exchanger, comprising a support base (1) and a fixing plate (2), characterized in that: A heat exchanger (3) is fixedly connected inside the fixed plate (2), and a buffer assembly is provided on the upper surface of the support base (1). The buffer assembly is used to reduce the vibration force generated by the equipment during operation. The buffer assembly includes a connecting plate (4), the bottom of which is fixedly connected to the upper surface of the support base (1). A pressing block (5) is fixedly connected to the upper surface of the connecting plate (4). An air chamber (6) is fixedly connected to the outer wall of the pressing block (5). A transmission plate (7) is slidably connected inside the air chamber (6). A transmission shaft (8) is fixedly connected to both sides of the transmission plate (7). A sliding column (9) is slidably connected to the inner wall of the transmission shaft (8). A spring (10) is provided on the outer wall of the transmission shaft (8). One end of the spring (10) is fixedly connected to the bottom of the transmission plate (7), and the other end is fixedly connected to the upper surface of the connecting plate (4). A protective assembly is provided on one side of the heat exchanger (3). The protective assembly is used to further prevent material leakage.

2. The rectangular fully welded plate heat exchanger according to claim 1, characterized in that: The protective assembly includes a U-shaped plate (12) and a rotating block (13). The U-shaped plate (12) slides on the outer wall of the heat exchanger (3), and the rotating block (13) is rotatably connected to one side of the U-shaped plate (12).

3. The rectangular fully welded plate heat exchanger according to claim 2, characterized in that: The inner wall of the U-shaped plate (12) is slidably connected to the connecting pipe (11), and the rotating block (13) is rotatably connected to the U-shaped plate (14) on one side.

4. The rectangular fully welded plate heat exchanger according to claim 3, characterized in that: Both the inner walls of the second U-shaped plate (14) and the first U-shaped plate (12) are fixedly connected with sealing rings (15), and a fixing block (16) is fixedly connected to one side of the second U-shaped plate (14).

5. The rectangular fully welded plate heat exchanger according to claim 4, characterized in that: The fixing block (16) has a fixing groove (17) inside, and a connecting block (18) is fixedly connected to one side of the U-shaped plate (12).

6. The rectangular fully welded plate heat exchanger according to claim 5, characterized in that: A connecting frame (19) is fixedly connected to one side of the connecting block (18), and a lever (20) is slidably connected inside the connecting frame (19).

7. The rectangular fully welded plate heat exchanger according to claim 6, characterized in that: The lever (20) is internally connected to a limiting post (21). A second spring (22) is provided on the outer wall of the limiting post (21). One end of the second spring (22) is fixedly connected to one side of the lever (20), and the other end is fixedly connected to the inner wall of the limiting post (21).

8. The rectangular fully welded plate heat exchanger according to claim 7, characterized in that: One end of the lever (20) is fixedly connected to a locking block (23), which fits into the fixing groove (17).

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