Finned tube heat exchanger
By designing a split-type fin tube structure, the combination of limit rings, firm columns, tightening sleeves and firm bolts is used to achieve convenient disassembly and assembly of fin tubes, solving the complex cleaning process in the prior art and improving maintenance efficiency.
Patent Information
- Application Number
- CN202421485486.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing fin tube heat exchangers lack convenient disassembly design when cleaning fins, resulting in complex and inconvenient cleaning process.
A finned tube heat exchanger is designed, and its finned tube body adopts a split structure, including a base tube, a tube plate and a straight fin plate. It achieves convenient disassembly and assembly through the combination of limiting rings, firm columns, tightening sleeves and firm bolts.
It realizes convenient disassembly and assembly of fin tubes, simplifies the cleaning process and improves maintenance efficiency.
Smart Images
Figure CN222865643U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a fin tube heat exchanger. Background Art
[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. Finned tube radiator is a highly efficient heat exchanger that is widely used in various industrial and civil applications, especially in refrigeration and heating systems. The basic element of a finned tube radiator is a finned tube, which is composed of a base tube and fins. The base tube is usually a round tube, and the fins are mainly spiral and straight.
[0003] The finned tube heat exchanger with a straight plate will malfunction after long-term use. A common malfunction is that dust, dirt and other impurities accumulate on the outside of the finned tube due to long-term operation, which affects the heat dissipation of the fin. The fins need to be maintained, serviced and cleaned regularly. When cleaning the fins on the finned tube, the finned tube is generally disassembled from the heat exchanger frame as a whole, and then the fins on the disassembled finned tube are cleaned. After cleaning, the finned tube is reassembled, and the fin cleaning process is relatively complicated. When cleaning the fins on the finned tube, there is a problem that there is no design for conveniently disassembling the fins on the finned tube. For this reason, the present application proposes a finned tube heat exchanger. Utility Model Content
[0004] The utility model aims to provide a fin-tube heat exchanger to solve the problem in the above background technology that there is no design for conveniently removing the fins on the fin-tube.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fin-tube heat exchanger, comprising a heat exchanger frame and a fin-tube body installed side by side inside the heat exchanger frame, the fin-tube body comprising a base tube connected to the heat exchanger frame, a tube sheet sleeved on the outside of the base tube, and a straight fin plate welded to the tube sheet into an integral structure, and a fixing component, the fixing component comprising a limit ring sleeved on the outside of the tube sheet end, a fixing column penetrating the surface of the limit ring, a fixing ring sliding along the axial direction of the base tube, a combined expansion sleeve and a fixing bolt and an expansion cone ring, and the outer surface of the base tube is provided with a limit convex plate embedded in the tube sheet.
[0006] Preferably, the tube sheet sleeved on the outside of the base tube is a semicircular arc structure, the straight fin plates are evenly distributed on the outer surface of the tube sheet, and the inner surface of the tube sheet is provided with a mounting groove that cooperates with the limiting convex plate.
[0007] Preferably, a groove is provided on the surface of the end of the tube sheet.
[0008] Preferably, the inner diameter of the limiting ring is the same as the outer diameter of the tube sheet, and the inner surface of the limiting ring is provided with a protrusion that fits with the clearance of the slot.
[0009] Preferably, the outer surface of the limiting ring is provided with a circular limiting ring groove and a rectangular groove, the outer surface of the end of the tube plate is provided with a screw hole, and the end of the fixing column located in the limiting ring groove is gap-matched with the screw hole.
[0010] Preferably, the expansion sleeve is clearance-matched with the limiting annular groove, and the expansion cone ring sleeve is arranged in the gap between the fixing column and the expansion sleeve.
[0011] Preferably, the centers of the base tube, tube sheet, limiting ring and fixing ring are on the same axis, the fixing column is perpendicular to the limiting ring, the surface of the limiting ring is provided with a rectangular first slide groove connected to the limiting ring groove, and the outer surface of the fixing ring is provided with a special-shaped groove with the same geometry as the limiting ring groove and the rectangular groove.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] In the utility model, the fin tube body is designed for convenient disassembly of the straight fin plate on the base tube, the limiting ring sleeve is arranged on the outer side of the tube plate end, the fixing ring sleeve is arranged on the outer side of the limiting ring, the fixing bolt locks the expansion sleeve, the expansion sleeve expands, so that the expansion cone ring is fixed on the outer side of the fixing column, so that the tube plate, the limiting ring and the fixing ring are firmly connected, which is convenient for disassembly and assembly of the base tube, the tube plate and the straight fin plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the utility model;
[0015] Figure 2 For the utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;
[0016] Figure 3 This is a schematic diagram of the main structure of the limit ring of the utility model;
[0017] Figure 4 For the utility model Figure 3 Schematic diagram of the structure in the middle BB direction;
[0018] Figure 5 It is a schematic diagram of the top view of the limit ring of the utility model;
[0019] In the figure: 1, heat exchanger frame; 2, fin tube body; 21, base tube; 22, tube sheet; 23, straight fin plate; 31, limiting ring; 32, fixing ring; 33, expansion sleeve; 34, fixing bolt; 211, limiting convex plate; 221, slot; 311, fixing column; 312, limiting ring groove; 313, convex block; 331, expansion cone ring. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example
[0021] See also Figures 1 to 5 The utility model provides a technical solution: a fin-tube heat exchanger, comprising a heat exchanger frame 1 and a fin-tube body 2 installed side by side inside the heat exchanger frame 1, the fin-tube body 2 and the heat exchanger frame 1 are combined by a conventional method, the fin-tube body 2 comprises a base tube 21 connected to the heat exchanger frame 1, a tube sheet 22 sleeved on the outside of the base tube 21, and a straight fin plate 23 welded to the tube sheet 22 into an integral structure, and a firm component, the base tube 21 and the heat exchanger frame 1 are combined by a conventional method, the tube sheet 22 and the straight fin plate 23 are a combined structure with the base tube 21, the tube sheet 22 can be disassembled, and the straight fin plate 23 is easy to clean; the firm component comprises a limit ring 31 sleeved on the outside of the end of the tube sheet 22, a firm column 311 penetrating the surface of the limit ring 31, a firm ring 32 sliding along the axial direction of the base tube 21, and a combined expansion sleeve 33 The fixing bolts 34 and the expansion cone ring 331 are arranged on the outside of the base pipe 21, the limiting ring 31 is sleeved on the outside of the end of the tube sheet 22, the fixing column 311 passes through one end of the limiting ring 31 and is screwed with the tube sheet 22 by means of a thread, the fixing ring 32 is sleeved on the outside of the limiting ring 31, the expansion sleeve 33 and the expansion cone ring 331 are embedded in the fixing ring 32, and the expansion sleeve 33 and the expansion cone ring 331 are sleeved on the outside of the fixing column 311, the fixing bolts 34 lock the expansion sleeve 33, the expansion sleeve 33 expands, so that the expansion cone ring 331 is fixed on the outside of the fixing column 311, so that the tube sheet 22, the limiting ring 31 and the fixing ring 32 are firmly connected, and the outer surface of the base pipe 21 is provided with a limiting convex plate 211 embedded in the tube sheet 22, the tube sheet 22 is limited by the limiting convex plate 211, and the tube sheet 22 and the limiting convex plate 211 are stably installed.
[0022] In this embodiment, the tube sheet 22 sleeved on the outside of the base tube 21 is a semicircular arc structure, and the straight fin plates 23 are evenly distributed on the outer surface of the tube sheet 22. The inner surface of the tube sheet 22 is provided with a mounting groove that cooperates with the limiting convex plate 211. The tube sheet 22 is limited by the limiting convex plate 211, and the tube sheet 22 and the limiting convex plate 211 are installed stably and accurately.
[0023] In this embodiment, a groove 221 is provided on the surface of the end of the tube sheet 22, the inner diameter of the limit ring 31 is the same as the outer diameter of the tube sheet 22, and the inner surface of the limit ring 31 is provided with a protrusion 313 that is clearance-matched with the groove 221. The protrusion 313 is embedded in the groove 221, so that the limit ring 31 is accurately installed on the outer side of the end of the tube sheet 22, and the position of the limit ring 31 is accurately installed.
[0024] In this embodiment, a circular limiting annular groove 312 and a rectangular groove are provided on the outer surface of the limiting ring 31, and a screw hole is provided on the outer surface of the end of the tube sheet 22. The end of the fixing column 311 located in the limiting annular groove 312 is gap-matched with the screw hole, the fixing column 311 is firmly connected to the tube sheet 22, the expansion sleeve 33 is gap-matched with the limiting annular groove 312, the expansion cone ring 331 is sleeved in the gap between the fixing column 311 and the expansion sleeve 33, the expansion sleeve 33 and the expansion cone ring 331 are embedded in the fixing ring 32, and the expansion sleeve 33 and the expansion cone ring 331 are sleeved on the outside of the fixing column 311, the fixing bolt 34 locks the expansion sleeve 33, the expansion sleeve 33 expands, so that the expansion cone ring 331 is firmly attached to the outside of the fixing column 311, so that the tube sheet 22, the limiting ring 31 and the fixing ring 32 are firmly connected.
[0025] In this embodiment, the centers of the base tube 21, the tube sheet 22, the limiting ring 31 and the fixing ring 32 are on the same axis, the fixing column 311 is perpendicular to the limiting ring 31, and the surface of the limiting ring 31 is provided with a rectangular first sliding groove connected to the limiting ring groove 312. The fixing column 311 does not affect the limiting ring 31 being sleeved on the outer side of the tube sheet 22. The outer surface of the fixing ring 32 is provided with a special-shaped groove with the same geometric shape as the limiting ring groove 312 and the rectangular groove. The expansion sleeve 33 and the expansion cone ring 331 pass through the special-shaped groove, which does not affect the installation of the expansion sleeve 33 and the expansion cone ring 331.
[0026] The working principle and use process of this utility model:
[0027] The fin tube body 2 is a split structure, and the base tube 21, the tube sheet 22 and the straight fin plate 23 form the fin tube body 2. The base tube 21, the tube sheet 22 and the straight fin plate 23 can be disassembled to facilitate cleaning of the outer surface of the straight fin plate 23.
[0028] When the tube sheet 22 and the straight fin sheet 23 are assembled on the base tube 21, the inner surface of the tube sheet 22 matches the outer surface of the base tube 21, the limiting convex plate 211 is embedded in the tube sheet 22, the tube sheet 22 is limited by the limiting convex plate 211, and the tube sheet 22 and the limiting convex plate 211 are installed stably and accurately;
[0029] The limiting ring 31 is sleeved on the outer side of the end of the tube sheet 22, and the fixing column 311 passes through one end of the limiting ring 31 and is screwed with the tube sheet 22 through a thread, and the fixing ring 32 is sleeved on the outer side of the limiting ring 31;
[0030] The expansion sleeve 33 and the expansion cone ring 331 are embedded in the fixing ring 32, and the expansion sleeve 33 and the expansion cone ring 331 are sleeved on the outside of the fixing column 311. The fixing bolt 34 locks the expansion sleeve 33, and the expansion sleeve 33 is expanded, so that the expansion cone ring 331 is fixed on the outside of the fixing column 311, so that the tube sheet 22, the limit ring 31 and the fixing ring 32 are firmly connected, which is convenient for assembling the base tube 21, the tube sheet 22 and the straight fin plate 23;
[0031] In summary: the fin tube body 2 is designed to facilitate the removal of the straight fin plate 23 on the base tube 21, the limiting ring 31 is sleeved on the outer side of the end of the tube sheet 22, the fixing ring 32 is sleeved on the outer side of the limiting ring 31, the fixing bolt 34 locks the expansion sleeve 33, the expansion sleeve 33 is expanded, so that the expansion cone ring 331 is firmly attached to the outer side of the fixing column 311, so that the tube sheet 22, the limiting ring 31 and the fixing ring 32 are firmly connected, which is convenient for disassembling and assembling the base tube 21, the tube sheet 22 and the straight fin plate 23.
[0032] Although the embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fin-tube heat exchanger, comprising a heat exchanger frame (1) and fin-tube bodies (2) installed side by side inside the heat exchanger frame (1), characterized in that: The fin tube body (2) comprises a base tube (21) connected to a heat exchanger frame (1), a tube sheet (22) sleeved on the outside of the base tube (21), a straight fin sheet (23) welded to the tube sheet (22) to form an integral structure, and a fixing component, wherein the fixing component comprises a limit ring (31) sleeved on the outside of the end of the tube sheet (22), a fixing column (311) penetrating the surface of the limit ring (31), a fixing ring (32) sliding along the axial direction of the base tube (21), a combined expansion sleeve (33) and a fixing bolt (34) and an expansion cone ring (331), and the outer surface of the base tube (21) is provided with a limit convex plate (211) embedded in the tube sheet (22).
2. The fin-tube heat exchanger according to claim 1, characterized in that: The tube sheet (22) sleeved on the outside of the base tube (21) is a semicircular arc structure, the straight fin plates (23) are evenly distributed on the outer surface of the tube sheet (22), and the inner surface of the tube sheet (22) is provided with a mounting groove that cooperates with the limiting convex plate (211).
3. The fin-tube heat exchanger according to claim 1, characterized in that: A clamping groove (221) is provided on the surface of the end of the tube plate (22).
4. The fin-tube heat exchanger according to claim 3, characterized in that: The inner diameter of the limiting ring (31) is the same as the outer diameter of the tube sheet (22), and the inner surface of the limiting ring (31) is provided with a protrusion (313) that is clearance-matched with the clamping groove (221).
5. The fin-tube heat exchanger according to claim 1, characterized in that: The outer surface of the limiting ring (31) is provided with a circular limiting annular groove (312) and a rectangular groove, the outer surface of the end of the tube plate (22) is provided with a screw hole, and the end of the fixing column (311) located in the limiting annular groove (312) is gap-matched with the screw hole.
6. The fin-tube heat exchanger according to claim 5, characterized in that: The expansion sleeve (33) is clearance-matched with the limiting annular groove (312), and the expansion cone ring (331) is sleeved in the gap between the fixing column (311) and the expansion sleeve (33).
7. The fin-tube heat exchanger according to claim 6, characterized in that: The centers of the base tube (21), the tube sheet (22), the limiting ring (31) and the fixing ring (32) are located on the same axis; the fixing column (311) is perpendicular to the limiting ring (31); a rectangular first sliding groove communicating with the limiting annular groove (312) is provided on the surface of the limiting ring (31); and a special-shaped groove having the same geometric shape as the limiting annular groove (312) and the rectangular groove is provided on the outer surface of the fixing ring (32).