Bimetallic composite finned tube

Abstract

This utility model relates to the field of finned tube technology, specifically a bimetallic composite finned tube, comprising an outer metal tube with several sets of heat dissipation fins arrayed on its outer surface. The inner wall of the outer metal tube has four sets of snap-fit ​​grooves, and threaded holes are provided at both ends of the outer metal tube near the snap-fit ​​grooves. An inner metal tube is movably installed inside the outer metal tube, and four sets of snap-fit ​​rods are installed on the side surface of the inner metal tube. Each end of the snap-fit ​​rod has an installation groove, and a fixing component for fixing the snap-fit ​​rod is installed on the inner wall of one side of the installation groove. The design, incorporating snap-fit ​​grooves, threaded holes, snap-fit ​​rods, installation grooves, rotating rods, fixing plates, bolts, limiting grooves, fixing grooves, fixing holes, filter plates, fixing blocks, and magnet plates, effectively solves the problem of existing bimetallic composite finned tubes, where the inner and outer tubes are integrally rolled and formed in one piece, with the fins welded to the outer tube, resulting in an integrated structure that is inconvenient for later maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of finned tube technology, specifically a bimetallic composite finned tube. Background Technology

[0002] Finned tubes are widely used in heat exchangers in the petroleum, chemical, power, and refrigeration industries. Due to the complex environment, finned tubes often operate under high temperature and strong corrosive conditions, making corrosion resistance a critical issue. Bimetallic composite finned tubes utilize different metal materials for their inner and outer layers. One metal meets the required strength or possesses excellent thermal conductivity, while the other exhibits good corrosion resistance or wear resistance. This allows bimetallic composite finned tubes to not only possess the required high strength and high thermal conductivity but also excellent corrosion resistance and wear resistance.

[0003] The existing bimetallic composite finned tubes are formed by rolling and bonding the inner and outer tubes in one step, with the fins welded onto the outer tube. This integrated structure makes it inconvenient for later maintenance and replacement. Therefore, corresponding improvements are needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a bimetallic composite finned tube to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bimetallic composite finned tube, comprising an outer metal tube, with several sets of heat dissipation fins arrayed on the outer surface of the outer metal tube; four sets of snap-fit ​​grooves are formed on the inner wall of the outer metal tube, and threaded holes are formed at both ends of the outer metal tube near the snap-fit ​​grooves; an inner metal tube is movably installed inside the outer metal tube, and four sets of snap-fit ​​rods are installed on the side surface of the inner metal tube; mounting grooves are formed at both ends of the snap-fit ​​rods, and fixing components for fixing the snap-fit ​​rods are installed on the inner wall of one side of the mounting grooves; limiting grooves are formed at both ends of the inner wall of the inner metal tube, and fixing grooves are formed on the inner wall of one side of the limiting grooves; fixing holes are formed at both ends of the inner metal tube near the limiting grooves; filter plates are movably installed inside the inner metal tube near both ends, and four sets of fixing blocks are installed on the side surface of the filter plates; a magnet plate is embedded in one side of each fixing block.

[0006] Preferably, the fixing assembly includes a rotating rod, one end of which is mounted to the inner wall of the mounting groove via a bearing, and the other end of the rotating rod is mounted with a fixing plate, and bolts are movably screwed into the interior of the fixing plate.

[0007] Preferably, each of the limiting grooves has a sealing plug inserted inside, and a hand handle is installed at one end of each sealing plug.

[0008] Preferably, the outer diameter of one end of the bolt is adapted to the inner diameter of the threaded hole, and one end of the bolt extends into the interior of the threaded hole and is movably threaded therewith.

[0009] Preferably, the four sets of locking rods are respectively located inside the corresponding locking slots and are configured for limiting locking.

[0010] Preferably, the four sets of fixing blocks are respectively located inside the corresponding fixing grooves, and one side of the magnet plate is attracted and fixed to the inner wall of one side of the fixing groove.

[0011] Preferably, one side surface of each of the four sets of locking rods is provided with anti-slip texture.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By incorporating components such as snap-fit ​​grooves, threaded holes, snap-fit ​​rods, mounting grooves, rotating rods, fixing plates, bolts, limit grooves, fixing grooves, fixing holes, filter screens, fixing blocks, and magnet plates, the problem of existing bimetallic composite finned tubes, which are integrally formed by one-time rolling and composite molding of inner and outer tubes with fins welded to the outer tube, and thus inconvenient for later maintenance and replacement, can be effectively solved. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the main body of this utility model.

[0015] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0016] Figure 3 This is a three-dimensional structural diagram of the outer metal tube of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the inner metal tube of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the filter screen of this utility model.

[0019] Figure 6 This is a three-dimensional cross-sectional view of the snap-fit ​​rod of this utility model.

[0020] In the diagram: 1. Outer metal tube; 11. Heat dissipation fins; 12. Snap-fit ​​groove; 13. Threaded hole; 2. Inner metal tube; 21. Snap-fit ​​rod; 22. Mounting groove; 23. Rotating rod; 24. Fixing plate; 25. Bolt; 26. Limiting groove; 27. Fixing groove; 28. Fixing hole; 3. Sealing plug; 31. Hand handle; 4. Filter screen; 41. Fixing block; 42. Magnet plate. 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. 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.

[0022] To achieve the above objectives, according to Figures 1-6 As shown, this utility model provides the following technical solution: a bimetallic composite finned tube, including an outer metal tube 1, with a plurality of heat dissipation fins 11 arrayed on the outer surface of the outer metal tube 1, four sets of snap-fit ​​grooves 12 formed on the inner wall of the outer metal tube 1, and threaded holes 13 formed at both ends of the outer metal tube 1 near the snap-fit ​​grooves 12. An inner metal tube 2 is movably installed inside the outer metal tube 1, and four sets of snap-fit ​​rods 21 are installed on the side surface of the inner metal tube 2. Anti-slip textures are provided on one side surface of each of the four sets of snap-fit ​​rods 21. The anti-slip textures can increase the friction between the outer surface of the snap-fit ​​rod 21 and the inner wall of one side of the snap-fit ​​groove 12, thereby enabling the snap-fit ​​rod 21 to be stably snapped into the snap-fit ​​groove. Inside the 12, four sets of snap-fit ​​rods 21 are respectively located inside the corresponding snap-fit ​​grooves 12 and are configured to limit snap-fit. Both ends of the snap-fit ​​rods 21 are provided with mounting grooves 22, and a fixing component for fixing the snap-fit ​​rods 21 is installed on one side of the inner wall of the mounting grooves 22. The inner wall of the inner metal tube 2 is provided with limiting grooves 26 near both ends, and a fixing groove 27 is provided on one side of the inner wall of the limiting grooves 26. Fixing holes 28 are provided at both ends of the inner metal tube 2 near the limiting grooves 26. A sealing plug 3 is movably inserted into the limiting grooves 26, and a hand handle 31 is installed at one end of the sealing plug 3. The sealing plug 3 can play a dustproof sealing role for the inside of the limiting grooves 26.

[0023] The fixing assembly includes a rotating rod 23, one end of which is mounted to the inner wall of the mounting groove 22 via a bearing. The other end of the rotating rod 23 is mounted with a fixing plate 24, and bolts 25 are movably screwed into the inside of the fixing plate 24. The outer diameter of one end of the bolt 25 is adapted to the inner diameter of the threaded hole 13, and one end of the bolt 25 extends into the inside of the threaded hole 13 and is movably screwed into it.

[0024] Filter plates 4 are movably installed at both ends inside the inner metal tube 2. Four sets of fixing blocks 41 are installed on the side surface of the filter plates 4. A magnet plate 42 is embedded in one side of each fixing block 41. The four sets of fixing blocks 41 are respectively located inside the corresponding fixing grooves 27. One side of the magnet plate 42 is attracted and fixed to the inner wall of one side of the fixing groove 27. The inner metal tube 2 is made of iron. The magnet plate 42 can be attracted and fixed to the inner wall of one side of the fixing groove 27. The two sets of filter plates 4 can filter debris, thereby preventing the flowing debris from scratching the inner metal tube 2 and reducing the service life of the inner metal tube 2.

[0025] When internal inspection and maintenance of the inner metal tube 2 is required, the user can rotate the bolt 25, allowing one end of the bolt 25 to rotate out of the corresponding threaded hole 13, thus separating the fixing plate 24 from one end of the outer metal tube 1. Then, the fixing plate 24 can be rotated 180° using the rotating rod 23, aligning the bolt 25 with the fixing hole 28. At this point, the bolt 25 can be rotated so that one end of the bolt 25 extends into the fixing hole 28 and is screwed in place. After this, the inner metal tube 2 can be moved to one side within the outer metal tube 1, allowing the inner metal tube 2 to move out of the outer metal tube 1, thus completing the separation between the outer metal tube 1 and the inner metal tube 2. Disassembly: At this point, the sealing plug 3 can be pulled out from the inside of the limiting groove 26 by holding the lever 31, and then the filter screen plate 4 can be rotated, so that the fixing block 41 can move to one side inside the fixing groove 27, thereby separating one side of the magnet plate 42 from the inner wall of the fixing groove 27. When the fixing block 41 is rotated into the inside of the limiting groove 26, the filter screen plate 4 can be moved out from the inside of the inner metal tube 2. At this time, both ends of the inner metal tube 2 are open, and maintenance operations can be performed on the inside of the inner metal tube 2. After maintenance, the inner metal tube 2 can be reinstalled into the inside of the outer metal tube 1 and the filter screen plate 4 can be reinstalled into the inside of the inner metal tube 2 by performing the above operations in reverse.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bimetallic composite finned tube, comprising an outer metal tube (1), wherein a plurality of sets of heat dissipation fins (11) are arrayed on the outer surface of the outer metal tube (1), characterized in that: The inner wall of the outer metal tube (1) is provided with four sets of snap-fit ​​grooves (12), and threaded holes (13) are provided at both ends of the outer metal tube (1) near the snap-fit ​​grooves (12). An inner metal tube (2) is movably installed inside the outer metal tube (1), and four sets of snap-fit ​​rods (21) are installed on the side surface of the inner metal tube (2). The two ends of the snap-fit ​​rods (21) are provided with mounting grooves (22), and a fixing component for fixing the snap-fit ​​rods (21) is installed on the inner wall of one side of the mounting groove (22). The inner wall of the inner metal tube (2) has a limiting groove (26) at both ends, and a fixing groove (27) is provided on one side of the inner wall of the limiting groove (26). The two ends of the inner metal tube (2) are provided with fixing holes (28) on the side of the limiting groove (26). The inner metal tube (2) is movably installed with a filter screen plate (4) at both ends. The side surface of the filter screen plate (4) is equipped with four sets of fixing blocks (41). A magnet plate (42) is embedded in one side of each fixing block (41).

2. The bimetallic composite finned tube according to claim 1, characterized in that: The fixing assembly includes a rotating rod (23), one end of which is mounted to the inner wall of the mounting groove (22) via a bearing, and the other end of the rotating rod (23) is mounted with a fixing plate (24), and bolts (25) are movably screwed into the inside of the fixing plate (24).

3. The bimetallic composite finned tube according to claim 1, characterized in that: Each of the limiting grooves (26) has a sealing plug (3) inserted inside, and a hand handle (31) is installed at one end of each sealing plug (3).

4. A bimetallic composite finned tube according to claim 2, characterized in that: The outer diameter of one end of the bolt (25) is adapted to the inner diameter of the threaded hole (13), and one end of the bolt (25) extends into the interior of the threaded hole (13) and is movably screwed into it.

5. A bimetallic composite finned tube according to claim 1, characterized in that: The four sets of locking rods (21) are respectively located inside the corresponding locking grooves (12) and are configured to limit locking.

6. A bimetallic composite finned tube according to claim 2, characterized in that: The four sets of fixing blocks (41) are respectively located inside the corresponding fixing grooves (27), and one side of the magnet plate (42) is attracted and fixed to one side of the inner wall of the fixing groove (27).

7. A bimetallic composite finned tube according to claim 1, characterized in that: All four sets of snap-fit ​​rods (21) have anti-slip textures on one side surface.

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