High-pressure heat exchanger with integrated box body and tube box structure

Abstract

The utility model relates to a high-pressure heat exchanger with an integrated box body and tube box structure, which belongs to the technical field of heat exchangers and comprises a flat cover, an integrated box body and tube box, a barrel body and a heat exchange tube. The integrated box body tube box is integrally cast, one end of the integrated box body tube box is welded with the barrel body, and the other end of the integrated box body tube box is detachably connected with the flat cover; the heat exchange pipe is of a U-shaped structure, and the two open ends of the heat exchange pipe are arranged on the integrated box body pipe box in a penetrating mode and fixedly connected with the integrated box body pipe box. According to the utility model, a flange connection mode is replaced by a welding connection mode, and a tube plate is directly replaced by an integrated box body tube box, so that external connecting parts are reduced, the overall structure is more compact, the space is saved, the assembly time is shortened, the production efficiency is improved, and the performance problem caused by assembly errors is reduced; leakage points are reduced, the sealing performance of equipment is improved, disassembly and cleaning are more convenient, the maintenance time and cost are reduced, the strength and pressure resistance of the equipment are enhanced, and the device is suitable for high-pressure and high-temperature working conditions.

Description

Technical Field

[0001] This utility model relates to an integrated box-tube structure high-pressure heat exchanger, belonging to the field of heat exchanger technology. Background Technology

[0002] High-pressure heat exchangers are heat exchangers capable of operating in high-pressure environments, and are widely used in industries such as petrochemicals, power generation, and metallurgy. In existing technologies, traditional high-pressure heat exchanger tube-box structures typically use flange connections between the tube-box and the shell. This assembled tube-box structure has several problems:

[0003] 1. High assembly complexity: Due to the numerous parts, precise alignment and connection of each component are required during assembly, which not only consumes a lot of manpower and time, but also demands a high level of technical skill from assembly workers. Even minor assembly errors can affect the overall performance of the heat exchanger, such as leading to reduced heat exchange efficiency and uneven fluid distribution.

[0004] 2. High risk of leakage: There are numerous connection points between multiple components, which are typically sealed using gaskets, flanges, or other methods. However, during long-term operation, factors such as temperature changes, pressure fluctuations, and fluid corrosion can cause these seals to age, deform, or become damaged, leading to leaks. Leaks not only waste energy and materials but can also threaten the production environment and personnel safety.

[0005] 3. Large space occupation: Due to the layout and connection methods of various components, the assembled tube box structure results in a large overall size of the heat exchanger, occupying a significant amount of space. In some industrial applications with strict space requirements, such as offshore platforms and small chemical plants, this large-sized heat exchanger may not meet the actual installation needs, limiting the application range of the equipment.

[0006] 4. High manufacturing costs: The diversity of parts and the complex assembly process increase material, processing, and labor costs during manufacturing. Furthermore, due to the susceptibility to leaks and other issues, subsequent maintenance and repair costs are also relatively high.

[0007] In summary, traditional modular tube-and-box heat exchangers have many shortcomings in practical applications and cannot meet the demands of modern industry for efficient, reliable, compact, and low-cost equipment. Therefore, developing a new type of integrated tube-and-box heat exchanger is of significant practical importance. Utility Model Content

[0008] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide an integrated box-tube structure high-pressure heat exchanger to solve the problems of complex assembly, easy leakage, large space occupation, and high manufacturing cost of the existing high-pressure heat exchanger box structure.

[0009] The integrated box-tube high-pressure heat exchanger of this utility model includes a flat cover, an integrated box-tube structure, a cylinder, and heat exchange tubes; the integrated box-tube structure is integrally cast, with one end welded to the cylinder, and the other end detachably connected to the flat cover; the heat exchange tubes are U-shaped and located in the cylinder, with the two open ends of the heat exchange tubes passing through the integrated box-tube structure and fixedly connected to it.

[0010] The technical solution of this utility model is to provide an integrated box-tube structure high-pressure heat exchanger, which is provided with an integrally cast box-tube structure and welded to the cylinder body, changing the traditional flange connection method, simplifying assembly and reducing leakage points; at the same time, the heat exchange tubes are fixedly connected to the integrated box-tube structure, and the integrated box-tube structure directly replaces the tube sheet, reducing the number of parts, thereby reducing the space occupied and reducing manufacturing costs.

[0011] Preferably, the two open ends of the heat exchange tube are fixedly connected to the integrated casing tube box by welding and expansion bonding to ensure connection strength and sealing.

[0012] Furthermore, the connection end between the integrated box-type tube box and the flat cover is drilled with threaded holes and connected to the flat cover by bolts.

[0013] Preferably, the integrated housing is provided with a medium inlet A and a medium outlet A.

[0014] Preferably, the cylinder sidewall is provided with a medium inlet B and a medium outlet B.

[0015] Furthermore, the integrated box-type tube box is equipped with a partition inside, which divides the integrated box-type tube box into two chambers, and the two chambers are connected by heat exchange tubes.

[0016] The advantages of this utility model compared with the prior art are:

[0017] The integrated box-tube high-pressure heat exchanger of this utility model replaces flange connections with welded connections and directly replaces tube sheets with an integrated box-tube structure, reducing external connecting parts, making the overall structure more compact, saving space, shortening assembly time, and greatly improving production efficiency. It also reduces performance problems caused by assembly errors; reduces leakage points and improves the equipment's sealing performance; the simplified structure makes disassembly and cleaning easier, reducing maintenance time and costs; the integrated structure enhances the equipment's strength and pressure resistance, making it suitable for high-pressure and high-temperature operating conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a cross-sectional view of an integrated enclosure and pipe box;

[0021] Figure 4 yes Figure 2 A magnified view of area A in the middle.

[0022] In the diagram: 1. Flat cover; 2. Integrated box-type tube box; 21. Medium inlet A; 22. Medium outlet A; 23. Baffle; 3. Cylinder; 31. Medium inlet B; 32. Medium outlet B; 4. Heat exchange tube. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] However, the description of this utility model is only a structural or even functional description of the embodiments, and the scope of the present utility model is not limited by the embodiments described herein.

[0025] For example, multiple embodiments may have various modifications and forms, and it should be understood that the scope of this utility model includes equivalents that can realize the technical concept.

[0026] like Figures 1-4 As shown, this embodiment is achieved through the following technical solution: it includes a flat cover 1, an integrated box-type tube box 2, a cylinder 3, and a heat exchange tube 4; the integrated box-type tube box 2 is integrally cast, with one end welded to the cylinder 3, and the other end of the integrated box-type tube box 2 is detachably connected to the flat cover 1; the heat exchange tube 4 has a U-shaped structure and is located in the cylinder 3, with the two open ends of the heat exchange tube 4 passing through the integrated box-type tube box 2 and fixedly connected to the integrated box-type tube box 2.

[0027] In this embodiment, the two open ends of the heat exchange tube 4 are fixedly connected to the integrated casing tube box 2 by welding and expansion bonding to ensure connection strength and sealing. The connection end of the integrated casing tube box 2 and the flat cover 1 is drilled with threaded holes and connected to the flat cover 1 by bolts. The integrated casing tube box 2 is provided with a medium inlet A21 and a medium outlet A22. The side wall of the cylinder 3 is provided with a medium inlet B31 and a medium outlet B32. The integrated casing tube box 2 is provided with a partition 23 inside, which divides the integrated casing tube box 2 into two chambers, which are connected by the heat exchange tube 4.

[0028] The working process of this utility model is as follows: Medium C enters one chamber of the integrated box tube box 2 through medium inlet A21, and then enters another chamber of the integrated box tube box 2 through heat exchange tube 4, and is discharged from medium outlet A22; Medium D enters the cylinder through medium inlet B31, flows in the area between heat exchange tube 4 and cylinder 3, and is discharged from medium outlet B32; During the flow, medium C and medium D complete heat exchange in cylinder 3.

[0029] Of course, the above description is only a preferred embodiment of this utility model and should not be considered as limiting the scope of the embodiments of this utility model. This utility model is not limited to the above examples, and all equivalent changes and improvements made by those skilled in the art within the scope of this utility model should be included in the patent coverage of this utility model.

Claims

1. A high-pressure heat exchanger with an integrated box-tube structure, characterized in that, It includes a flat cover (1), an integrated box-type tube box (2), a cylinder (3), and heat exchange tubes (4); the integrated box-type tube box (2) is integrally cast, with one end welded to the cylinder (3), and the other end of the integrated box-type tube box (2) is detachably connected to the flat cover (1); the heat exchange tubes (4) have a U-shaped structure and are located in the cylinder (3), with the two open ends of the heat exchange tubes (4) passing through the integrated box-type tube box (2) and fixedly connected to the integrated box-type tube box (2).

2. The integrated box-tube structure high-pressure heat exchanger according to claim 1, characterized in that, The two open ends of the heat exchange tube (4) are fixedly connected to the integrated box tube box (2) by welding and expansion bonding.

3. The integrated box-tube structure high-pressure heat exchanger according to claim 2, characterized in that, The integrated box tube box (2) and the flat cover (1) are connected by threaded holes and are connected to the flat cover (1) by bolts.

4. The integrated box-tube structure high-pressure heat exchanger according to claim 3, characterized in that, The integrated box-type tube box (2) is provided with a medium inlet A (21) and a medium outlet A (22).

5. The integrated box-tube structure high-pressure heat exchanger according to claim 1, characterized in that, The cylinder (3) is provided with a medium inlet B (31) and a medium outlet B (32) on its side wall.

6. The integrated box-tube structure high-pressure heat exchanger according to claim 1, characterized in that, The integrated box-type tube box (2) is equipped with a partition (23) inside, which divides the integrated box-type tube box (2) into two chambers, and the two chambers are connected by a heat exchange tube (4).

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