Finned tube type protective gas cooler with water collecting pipe
By using an integrally bent U-shaped finned tube and laser-welded fins, the leakage and scaling problems of traditional coolers are solved, improving the stability and heat exchange efficiency of the protective gas cooler.
Patent Information
- Application Number
- CN202422849577.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Traditional protective gas coolers are prone to scaling in the water chamber and blockage of heat exchange tubes due to structural defects. Welding joints are also prone to cracking and leakage, affecting the dew point of the protective gas. Furthermore, the fin welding has high thermal resistance and low heat exchange efficiency.
The design employs an integrally bent U-shaped finned tube and laser-welded fins. The manifold is kept away from the heat source to avoid scaling. The connection between the U-shaped heat exchange bend and the manifold, combined with the laser-welded fins, reduces thermal resistance and leakage risk.
It achieves stable operation without welding points, avoids water leakage and scaling, and improves heat exchange efficiency and heat exchange area per unit volume of fins.
Smart Images
Figure CN223925488U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of protective gas cooler, specifically is a water collecting pipe finned tube type protective gas cooler. BACKGROUND
[0002] The protective gas (N2+H2) cooler is the strip steel cooling equipment of the strip steel galvanizing line and continuous annealing furnace of the cold rolling mill, the two kinds of furnace are filled with the low dew point, low oxygen content protective gas in the furnace, and the strip steel completes the technological process under the reducing protective atmosphere, and the cooler is the key equipment in the strip steel cooling process, and the structural form commonly used is finned tube type heat exchanger, and the key point of the equipment is to ensure the stability of long-term operation, and water leakage is absolutely not allowed.
[0003] The traditional cooler causes the water chamber to scale, the heat exchange pipe to block and the welding opening to crack due to the structural defects, and once the high-temperature heating cracks, water leakage will occur to cause the dew point of the protective gas to rise. CONTENT OF THE UTILITY MODEL
[0004] In view of the defects of the prior art, the utility model provides a water collecting pipe finned tube type protective gas cooler to solve the problems in the above background art.
[0005] In order to realize the above object, the utility model is realized through the following technical scheme: a water collecting pipe finned tube type protective gas cooler, including shell assembly, a plurality of U type heat exchange elbow pipes are fixedly arranged in the shell assembly, the U type heat exchange elbow pipe is the U type finned tube of integral bending, the U type heat exchange elbow pipe is fixedly provided with annular fin, one pair of headers are arranged on the outer side of the shell assembly, the U type heat exchange elbow pipe passes through the shell assembly, and the U type heat exchange elbow pipe is communicated with one pair of headers.
[0006] Preferably, the shell assembly includes a pair of heat exchanger side plates, a heat exchanger tube plate is fixedly arranged at one end of the pair of heat exchanger side plates, a bottom U type guard plate is fixedly arranged at the other end of the pair of heat exchanger side plates, the heat exchanger tube plate is connected with a wind baffle, and the edges of the pair of heat exchanger side plates are fixedly connected with both ends of the wind baffle.
[0007] Preferably, a plurality of heat exchange elbow pipes and header connection pipes are communicated with one of the headers, a plurality of elbow pipes are communicated with the other header, the U type heat exchange elbow pipe passes through the heat exchanger tube plate, a plurality of large elbows and a plurality of small elbows are arranged on the outer side of the heat exchanger tube plate, two adjacent U type heat exchange elbow pipes are communicated through the small elbow, two non-adjacent U type heat exchange elbow pipes are communicated through the large elbow, one end of the two U type heat exchange elbow pipes after communication is communicated with the heat exchange elbow pipe and the header connection pipe, and the other end of the two U type heat exchange elbow pipes after communication is communicated with the elbow pipe.
[0008] Preferably, the header is a circular tube structure, both ends of the header are head structure, the header is communicated with the inlet and outlet flange, the header top is equipped with a gas valve.
[0009] Preferably, the header top is communicated with the exhaust and drainage pipe, the exhaust and drainage pipe is installed with the gas valve, and the gas valve is a ball valve.
[0010] Preferably, the header both ends head is a pipe cap.
[0011] Preferably, the U-shaped heat exchange elbow pipe passes through the heat exchanger tube plate and is welded or expanded.
[0012] Preferably, the annular fin adopts laser welding fin or aluminum fin.
[0013] Preferably, the heat exchanger tube plate outer surface is fixedly provided with a lifting lug.
[0014] Beneficial effects:
[0015] The utility model provides a kind of water collecting pipe finned tube type protective gas cooler, with the following beneficial effects:
[0016] 1, by U-shaped heat exchange elbow pipe is bent as a whole U-shaped finned tube, the bending of whole pipe can guarantee that there is no welding point in furnace, so that the leakage danger caused by welding defects is eliminated;
[0017] 2, by being equipped with a pair of header outside shell assembly can make header away from heat source, so that the phenomenon of header inside scale is eliminated;
[0018] 3, by laser welding fin replaces previous high-frequency resistance welding fin, laser welding fin is a kind of zero contact thermal resistance fin, fin spacing is small, and unit volume heat exchange area is large. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is the explosion diagram of the utility model.
[0020] In the drawing: 1, ball valve;2, exhaust and drainage pipe;3, inlet and outlet flange;4, header;5, pipe cap;6, elbow;7, heat exchange elbow pipe and header connecting pipe;8, large elbow;9, small elbow;10, heat exchanger tube plate;11, lifting lug;12, wind shield;13, heat exchanger side plate;14, annular fin;15, U-shaped heat exchange elbow pipe;16, bottom U-shaped guard plate. DETAILED DESCRIPTION
[0021] The technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0022] Please refer to Figure 1 The utility model provides a technical scheme: a water collecting pipe finned tube type protective gas cooler, including shell assembly, a plurality of U type heat exchange elbow pipes 15 are fixedly arranged in shell assembly, U type heat exchange elbow pipe 15 is the U type finned tube of integral bending, annular fin 14 is fixedly arranged on U type heat exchange elbow pipe 15, one pair of headers 4 are equipped outside shell assembly, U type heat exchange elbow pipe 15 passes through shell assembly, U type heat exchange elbow pipe 15 is communicated with one pair of headers 4, shell assembly includes a pair of heat exchanger side plates 13, one end of a pair of heat exchanger side plates 13 is fixedly arranged with heat exchanger tube sheet 10 in common, the other end of a pair of heat exchanger side plates 13 is fixedly arranged with bottom U type guard plate 16 in common, heat exchanger tube sheet 10 is connected with baffle 12, and the edge of a pair of heat exchanger side plates 13 is fixedly connected with both ends of baffle 12, a plurality of heat exchange elbow pipes and header connecting pipes 7 are communicated on one header 4, a plurality of elbow pipes 6 are communicated on another header 4, U type heat exchange elbow pipe 15 passes through heat exchanger tube sheet 10, a plurality of large elbows 8 and a plurality of small elbows 9 are equipped outside heat exchanger tube sheet 10, two adjacent U type heat exchange elbow pipes 15 are communicated through small elbow 9, two non-adjacent U type heat exchange elbow pipes 15 are communicated through large elbow 8, one end of two U type heat exchange elbow pipes 15 after communication is communicated with heat exchange elbow pipe and header connecting pipe 7, and the other end of two U type heat exchange elbow pipes 15 after communication is communicated with elbow pipe 6, header 4 is the round tube structure, and the both ends of header 4 are the head structure, and inlet and outlet water opening flanges 3 are communicated on header 4, and header 4 top is equipped with the gas valve, the top of header 4 is communicated with exhaust and drainage pipe 2, and the gas valve is installed on exhaust and drainage pipe 2, and the gas valve is ball valve 1, and the both end heads of header 4 are pipe caps 5, U type heat exchange elbow pipe 15 passes through heat exchanger tube sheet 10 and is welded or expanded with it, annular fin 14 adopts laser welding fin or aluminum fin, and lug 11 is fixedly arranged on the outer surface of heat exchanger tube sheet 10.
[0023] Through the personnel in the field, all electrical components in the case are electrically connected with their adapted power supply, and appropriate controllers should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should be completed according to the working order between the electrical components in the following working principle. The detailed connection means is the public technical knowledge in the field. The following mainly introduces the working principle and process, and the electrical control is not described.
[0024] Embodiment: according to the description attached Figure 1It can be known that, in use, the U-shaped heat exchange elbow pipe 15 (the number of U-shaped heat exchange elbow pipes 15 is several, four are drawn in the figure, and the others are not drawn) is a U-shaped finned tube bent as a whole, the bending of the whole pipe can ensure that there is no welding point in the furnace, thereby eliminating the leakage danger caused by welding defects; a pair of headers 4 is arranged outside the shell assembly, which can make the headers 4 away from the heat source, thereby eliminating the phenomenon of scaling in the headers 4; the laser-welded fin is used to replace the previous high-frequency resistance-welded fin, the laser-welded fin is a zero-contact heat resistance fin, the fin spacing is small, and the heat exchange area per unit volume is large.
[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A header finned tube type shield gas cooler characterized by, The shell assembly is internally fixed with a plurality of U-shaped heat exchange elbow pipes (15), the U-shaped heat exchange elbow pipes (15) are integrally bent U-shaped finned pipes, annular fins (14) are fixedly arranged on the U-shaped heat exchange elbow pipes (15), and a pair of headers (4) are arranged outside the shell assembly, the U-shaped heat exchange elbow pipes (15) pass through the shell assembly, and the U-shaped heat exchange elbow pipes (15) communicate with the pair of headers (4).
2. A header finned tube type shield gas cooler according to claim 1, wherein The shell assembly comprises a pair of heat exchanger side plates (13), one end of the pair of heat exchanger side plates (13) is fixedly provided with a heat exchanger tube plate (10) in common, the other end of the pair of heat exchanger side plates (13) is fixedly provided with a bottom U-shaped guard plate (16) in common, the heat exchanger tube plate (10) is connected with a wind baffle (12), and the edges of the pair of heat exchanger side plates (13) are fixedly connected with both ends of the wind baffle (12).
3. A header finned tube type shield gas cooler according to claim 2, characterized by A plurality of heat exchange elbow pipes and header connecting pipes (7) are communicated with one of the headers (4), a plurality of elbow pipes (6) are communicated with the other header (4), the U-shaped heat exchange elbow pipes (15) pass through the heat exchanger tube plate (10), a plurality of large elbows (8) and a plurality of small elbows (9) are arranged outside the heat exchanger tube plate (10), two adjacent U-shaped heat exchange elbow pipes (15) are communicated through the small elbows (9), two non-adjacent U-shaped heat exchange elbow pipes (15) are communicated through the large elbows (8), one end of the two U-shaped heat exchange elbow pipes (15) after communication is communicated with the heat exchange elbow pipe and header connecting pipe (7), and the other end of the two U-shaped heat exchange elbow pipes (15) after communication is communicated with the elbow pipe (6).
4. A header finned tube type shield gas cooler according to claim 1, wherein The header (4) is in a circular tube structure, the header (4) is provided with a head structure at both ends, the header (4) is provided with inlet and outlet water port flanges (3), and the header (4) is provided with a gas release valve at the top.
5. The collector finned tube type shield gas cooler according to claim 4, characterized by The header (4) is provided with an exhaust and drainage pipe (2) at the top, the exhaust and drainage pipe (2) is provided with the gas release valve, and the gas release valve is a ball valve (1).
6. The water-collector finned tube type shield gas cooler according to claim 4, characterized by The header (4) is provided with a pipe cap (5) at both ends.
7. The water-collector finned tube type shield gas cooler according to claim 3, characterized by The U-shaped heat exchange elbow pipe (15) passes through the heat exchanger tube plate (10) and is welded or expanded to the heat exchanger tube plate (10).
8. The collector finned tube type shield gas cooler according to claim 1, characterized by The annular fin (14) is a laser-welded fin or an aluminum fin.
9. The header finned tube type shield gas cooler according to claim 2, characterized by The heat exchanger tube plate (10) is fixedly provided with a lifting lug (11) on the outer surface.