Corrosion-proof heat exchange module with helical finned tube

Abstract

This utility model relates to the field of industrial product technology, specifically a corrosion-resistant spiral finned tube heat exchange module. It includes several sets of parallel, detachable spiral finned tubes for waste heat recovery from exhaust gas, and a mounting frame for fixing each set of spiral finned tubes. The sets of spiral finned tubes are connected sequentially via connecting bends. This utility model, through the arrangement of several sets of parallel, detachable spiral finned tubes and the mounting frame for fixing each set, enables the heat exchange module to effectively recover waste heat from exhaust gas while facilitating disassembly and maintenance. The sequential connection of the spiral finned tubes via connecting bends ensures smooth fluid flow between the tubes. Each set of spiral finned tubes has mounting flanges at its top and bottom, which are connected to the inner wall of the mounting frame, enhancing the stability of the spiral finned tubes. The surface of the metal shell is coated with an anti-corrosion layer, effectively preventing corrosion and extending the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of industrial product technology, specifically to a spiral finned tube anti-corrosion heat exchange module. Background Technology

[0002] Against the backdrop of industrial energy conservation and efficient energy utilization, waste heat recovery technology has become a key link in improving energy utilization, reducing production costs, and mitigating environmental pollution. Among numerous waste heat recovery devices, spiral finned tubes play an irreplaceable role as a core heat exchange element. By adding spiral fins to the outer surface of the base tube, spiral finned tubes significantly increase the heat exchange area. When waste gas flows through the spiral finned tube, the spiral fins effectively disrupt the boundary layer of the waste gas flow, enhancing the turbulence and thus significantly improving heat exchange efficiency. This has led to the widespread application of spiral finned tubes in waste heat recovery systems across numerous industries, including steel, chemical, and power, converting previously wasteful waste gas heat into usable thermal energy, bringing considerable economic and environmental benefits to enterprises.

[0003] However, existing spiral finned tube technology still has unresolved issues in practical applications. From a structural stability perspective, when multiple spiral finned tubes are used in combination, there is often a lack of effective and convenient fixing and connection methods, resulting in a complex and cumbersome installation process. Furthermore, loosening and displacement are prone to occur during use, affecting the overall stability of the heat exchange system. Utility Model Content

[0004] The purpose of this invention is to provide a corrosion-resistant heat exchange module for spiral finned tubes, in order to solve the problem of insufficient stability of existing spiral finned tubes mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] The anti-corrosion heat exchange module for spiral finned tubes includes several sets of parallel spiral finned tubes that are detachable for waste heat recovery from exhaust gas, and an installation frame for fixing each set of spiral finned tubes. The sets of spiral finned tubes are connected sequentially by connecting bends.

[0007] Each set of spiral finned tubes is connected to a mounting flange at the top and bottom, the mounting flange being connected to the inner wall of the mounting frame, and the spiral finned tube includes a metal shell, the surface of which is provided with an anti-corrosion coating.

[0008] The mounting frame has symmetrical fixed bases on both sides of the bottom, and the bottom of the fixed base is connected to the mounting foot. The fixed base and the mounting foot are connected in an L-shape.

[0009] Preferably, the number of spiral finned tubes is an even number, and the height of the spiral finned tubes is the same as the internal height of the mounting frame. This ensures the stable installation of the spiral finned tubes within the mounting frame and avoids shaking or gap problems caused by height mismatch, resulting in smoother fluid flow.

[0010] Preferably, the bottom of the spiral finned tubes at both ends is equipped with an air inlet pipe and an air outlet pipe that are connected to external pipes, providing a clear channel for the entry and exit of fluids such as exhaust gas.

[0011] Preferably, the metal casing is made of stainless steel or pure copper with a thickness of 3-8mm. This ensures that the casing has sufficient strength to withstand the pressure of the internal fluid and the external forces, while avoiding unnecessary cost and weight increases due to excessive thickness, thus achieving a balance between performance and cost.

[0012] Preferably, the anti-corrosion coating is an anti-corrosion paint coating with a thickness of 0.25-0.5mm. The anti-corrosion paint coating can form a dense protective film on the surface of the metal shell, which isolates the metal from contact with the surrounding corrosive media, thereby extending the service life of the spiral finned tube.

[0013] Preferably, the mounting feet are provided with fixing through holes, and the mounting feet are installed by bolts passing through the fixing through holes, which can ensure that the heat exchange module can be stably installed in the predetermined position under various operating conditions.

[0014] Preferably, both ends of the connecting bend are connected to the outer wall of the mounting frame via mounting flanges, ensuring the sealing and connection strength between the connecting bend and the spiral finned tube.

[0015] Compared with existing technologies, the advantages of this utility model are as follows: In this anti-corrosion heat exchange module of spiral finned tubes, the heat exchange module can effectively recover waste heat from exhaust gas by setting several sets of parallel and detachable spiral finned tubes and mounting frames for fixing each set of spiral finned tubes, while facilitating disassembly and maintenance; the spiral finned tubes are connected sequentially by connecting bends to ensure smooth fluid flow between the tubes; each set of spiral finned tubes has mounting flanges connected to the top and bottom, which are connected to the inner wall of the mounting frame, enhancing the stability of the spiral finned tubes; the spiral finned tubes include a metal shell, the surface of which is coated with an anti-corrosion coating, effectively preventing corrosion and extending the service life of the equipment; fixed bases are symmetrically arranged on both sides of the bottom of the mounting frame, and mounting feet are connected to the bottom of the fixed bases. The fixed bases and mounting feet are connected in an L-shape, providing a stable installation foundation and ensuring the stability and safety of the entire heat exchange module. The mounting feet are also provided with mounting holes, which facilitate fixing the module to the target position with bolts and other components. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the spiral finned tube of this utility model;

[0020] 10. Install the frame;

[0021] 20. Spiral finned tube; 21. Mounting flange; 22. Inlet duct; 23. Outlet duct; 24. Metal casing; 25. Anti-corrosion coating;

[0022] 30. Connect the bends;

[0023] 40. Fixed base; 41. Mounting feet; 42. Fixing through hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. 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.

[0025] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Spiral finned tube corrosion-resistant heat exchange module, such as Figures 1-3As shown, the heat exchange module includes several sets of detachable spiral finned tubes 20 arranged side-by-side for exhaust gas waste heat recovery, and a mounting frame 10 for fixing each set of spiral finned tubes 20. The sets of spiral finned tubes 20 are connected sequentially via connecting bends 30. Each set of spiral finned tubes 20 has mounting flanges 21 connected to its top and bottom, which are attached to the inner wall of the mounting frame 10. Each spiral finned tube 20 includes a metal shell 24 with an anti-corrosion coating 25 on its surface. Fixed bases 40 are symmetrically arranged on both sides of the bottom of the mounting frame 10, and mounting feet 41 are connected to the bottom of each fixed base 40 in an L-shape. Through the arrangement of several sets of detachable spiral finned tubes 20 arranged side-by-side and the mounting frame 10 for fixing each set of spiral finned tubes 20, the heat exchange module can effectively recover exhaust gas waste heat. This design facilitates disassembly and maintenance. Each group of spiral finned tubes 20 is sequentially connected via connecting bends 30, ensuring smooth fluid flow between tubes. Each group of spiral finned tubes 20 has mounting flanges 21 connected to its top and bottom, which are attached to the inner wall of the mounting frame 10, enhancing the stability of the spiral finned tubes 20. The spiral finned tubes 20 include a metal shell 24, the surface of which is coated with an anti-corrosion coating 25, effectively preventing corrosion and extending the equipment's service life. The mounting frame 10 has symmetrically arranged fixed bases 40 on both sides of its bottom, with mounting feet 41 connected to the bottom of each fixed base 40. The fixed base 40 and mounting feet 41 are connected in an L-shape, providing a stable mounting foundation and ensuring the stability and safety of the entire heat exchange module. Mounting feet 41 also have mounting holes 42, facilitating the fixing of the module to the target position using bolts or other components.

[0027] It is worth noting that the number of spiral finned tubes 20 is an even number, and the height of the spiral finned tubes 20 is the same as the internal height of the mounting frame 10, which ensures the stable installation of the spiral finned tubes 20 within the mounting frame 10 and avoids vibration and noise during fluid flow.

[0028] Furthermore, the bottom of the spiral finned tubes 20 at both ends is equipped with an air inlet pipe 22 and an air outlet pipe 23 that connect to external pipes, which facilitates the connection between the module and external pipes, allowing exhaust gas to smoothly enter and exit the module, ensuring the continuity and efficiency of waste heat recovery.

[0029] The metal casing is made of stainless steel or pure copper with a thickness of 3-8mm, which ensures both the strength of the metal casing and its good thermal conductivity. The anti-corrosion coating 25 is an anti-corrosion paint coating with a thickness of 0.25-0.5mm, which effectively prevents the metal casing from being corroded and extends the service life of the module.

[0030] Specifically, the mounting foot 41 has a fixing through hole 42. The mounting foot 41 is installed by passing a bolt through the fixing through hole 42, which makes the installation of the module simpler and faster, and also facilitates the disassembly and replacement of the module.

[0031] In addition, the two ends of the connecting bend 30 are connected to the outer wall of the mounting frame 10 through the mounting flange 21, which not only ensures the sealing between the connecting bend 30 and the spiral finned tube 20, but also facilitates the installation and disassembly of the connecting bend 30, and makes the module maintenance and upkeep convenient.

[0032] Working principle of this spiral finned tube corrosion-resistant heat exchange module:

[0033] First, using bolts, the entire module is securely installed in the predetermined position through the fixing through holes 42 on the mounting feet 41, ensuring that the mounting frame 10 and its components such as the spiral finned tubes 20 are in a stable state. Next, the external pipes are connected to the air inlet pipes 22 and air outlet pipes 23 at the bottom of the spiral finned tubes 20 at both ends, ensuring that the exhaust gas can smoothly enter and exit the module.

[0034] During operation, exhaust gas enters through the inlet duct 22 and flows through the spiral finned tubes 20 arranged side-by-side and connected sequentially by connecting bends 30. The metal shell 24 and the anti-corrosion coating 25 of the spiral finned tubes 20 effectively resist corrosion and simultaneously achieve efficient waste heat recovery. The fluid flows inside the spiral finned tubes 20, exchanging heat with the external environment.

[0035] When maintenance or component replacement is required, the spiral finned tube 20 is detachable, and the connecting elbow 30 is connected at both ends via mounting flanges 21, allowing for convenient disassembly and replacement of relevant components. Simultaneously, the mounting frame 10 provides stable support for all components, ensuring a safe, efficient, and stable overall operation.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A spiral finned tube anti-corrosion heat exchange module, characterized in that: It includes several sets of detachable spiral finned tubes (20) arranged side by side for exhaust gas waste heat recovery and an installation frame (10) for fixing each set of spiral finned tubes (20). The sets of spiral finned tubes (20) are connected in sequence by connecting bends (30). Each set of spiral finned tubes (20) is connected to a mounting flange (21) at the top and bottom. The mounting flange (21) is connected to the inner wall of the mounting frame (10). The spiral finned tube (20) includes a metal shell (24). The surface of the metal shell (24) is provided with an anti-corrosion coating (25). The mounting frame (10) has fixed bases (40) symmetrically arranged on both sides of the bottom. The bottom of the fixed base (40) is connected to the mounting foot (41), and the fixed base (40) and the mounting foot (41) are connected in an L-shape.

2. The spiral finned tube anti-corrosion heat exchange module according to claim 1, characterized in that: The number of spiral finned tubes (20) is an even number, and the height of the spiral finned tubes (20) is the same as the internal height of the mounting frame (10).

3. The spiral finned tube anti-corrosion heat exchange module according to claim 1, characterized in that: The bottom of the spiral finned tubes (20) at both ends are equipped with an air inlet pipe (22) and an air outlet pipe (23) that are connected to external pipes.

4. The anti-corrosion heat exchange module of spiral finned tube according to claim 1, characterized in that: The metal casing is made of stainless steel or pure copper and has a thickness of 3-8mm.

5. The spiral finned tube anti-corrosion heat exchange module according to claim 1, characterized in that: The anti-corrosion coating (25) is an anti-corrosion paint coating with a thickness of 0.25-0.5mm.

6. The spiral finned tube anti-corrosion heat exchange module according to claim 1, characterized in that: The mounting foot (41) is provided with a fixing through hole (42), and the mounting foot (41) is installed by passing a bolt through the fixing through hole (42).

7. The spiral finned tube anti-corrosion heat exchange module according to claim 1, characterized in that: The two ends of the connecting bend (30) are connected to the outer wall of the mounting frame (10) via mounting flanges (21).

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