A combined heat exchanger

Abstract

This utility model discloses a combined heat exchanger, including a shell, an inner cavity of which is provided with a spiral heat transfer element, and a cover plate on one side of the shell that can seal its inner cavity. The cover plate can be initially connected to the shell through a limiting component, and then locked by a locking component. The limiting component and locking component used in this utility model significantly reduce disassembly steps and operation time, significantly improve equipment maintenance efficiency, reduce labor costs, and shorten the disassembly and installation time of the cover plate. This makes the maintenance, cleaning, and replacement of parts of the heat exchanger more efficient, reduces equipment downtime, and improves overall production efficiency. The limiting component and locking component work together to ensure the stability of the initial connection and ensure the connection strength between the cover plate and the shell through the locking component, maintaining the good sealing performance of the heat exchanger and ensuring stable and efficient heat exchange.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a combined heat exchanger. Background Technology

[0002] In modern industrial production, heat exchange equipment, as a key device for heat transfer and conversion, is widely used in many fields such as chemical, petroleum, power, and food. Combined heat exchangers occupy an important position in heat exchange equipment due to their high heat exchange performance and flexible structural design. Spiral plate heat exchangers, as an important component of combined heat exchangers, have significant advantages such as high heat transfer efficiency, small footprint, and resistance to clogging due to their unique spiral channel structure, which can effectively meet the heat exchange needs under different operating conditions.

[0003] Spiral plate heat exchangers typically consist of spiral heat transfer plates, cover plates, and other components. Their working principle involves hot and cold fluids flowing separately within spiral channels, exchanging heat through the heat transfer plates. In practical applications, heat exchangers require regular maintenance, cleaning, and component replacement to ensure stable and efficient operation. However, existing spiral plate heat exchangers generally use multiple sets of bolts to fix the cover plates. While this method ensures the connection strength between the cover plates and the heat exchanger body, it presents numerous inconveniences during disassembly. Removing a large number of bolts consumes significant time and manpower, reducing equipment maintenance efficiency. Therefore, a modular heat exchanger needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a combined heat exchanger to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined heat exchanger, including a shell, a spiral heat transfer element provided in the inner cavity of the shell, and a cover plate provided on one side of the shell to seal its inner cavity. The cover plate can be initially connected to the shell by a limiting component and then locked by a locking component.

[0006] Preferably, the limiting component includes a set of limiting plates movably connected to one side of the cover plate, two sets of locking blocks symmetrically arranged on the outer wall of the limiting plates, and a locking seat installed on the outer wall of the housing. By rotating the limiting plates, the locking blocks can be engaged with the locking seat, thereby completing the initial connection between the cover plate and the housing.

[0007] Preferably, the locking assembly includes a first limiting seat, bolts, and a second limiting seat. Two sets of the first limiting seats are symmetrically arranged on the outer wall of the limiting plate. The two sets of bolts pass through the two sets of first limiting seats in sequence and are threadedly connected to the second limiting seat installed on the outer wall of the housing.

[0008] Preferably, the spiral heat transfer element and the shell cooperate to form two sets of independent water channels. The outer wall of the shell is provided with two sets of first fluid interfaces corresponding to the two sets of water channels, and the side of the shell away from the cover plate is provided with two sets of second fluid interfaces corresponding to the two sets of water channels, so as to realize independent circulation and heat exchange of cold and hot fluids in the two sets of water channels.

[0009] Preferably, two sets of support members are symmetrically installed on the outer wall of the housing to support the heat exchanger.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The limiting and locking components used in this utility model significantly reduce disassembly steps and operation time, greatly improve equipment maintenance efficiency, reduce labor costs, and shorten the time for disassembling and installing the cover plate. This makes the maintenance, cleaning, and replacement of parts of the heat exchanger more efficient, reduces equipment downtime, and improves overall production efficiency. The combination of the limiting and locking components can ensure the stability of the initial connection and ensure the connection strength between the cover plate and the shell through the locking component, maintaining the good sealing performance of the heat exchanger and ensuring stable and efficient heat exchange.

[0012] 2. The limiting component and locking component of this utility model have a clear operation process, requiring no complicated tools or extensive disassembly, thus lowering the technical threshold for maintenance. Compared with traditional multi-bolt fixing, this structure reduces disassembly and installation steps, significantly shortens maintenance time, reduces equipment downtime, and improves production continuity. The limiting component provides initial positioning and support, while the locking component is fastened with bolts, providing double protection for the connection between the cover plate and the shell, maintaining the sealing performance and operational stability of the heat exchanger.

[0013] 3. The two independent water channels of this utility model enable the hot and cold fluids to form a stable circulation path, avoid fluid mixing and interference, increase the heat transfer area, enhance the heat exchange process, and significantly improve the heat exchange efficiency. The two sets of support components symmetrically installed on the outer wall of the shell provide stable support for the heat exchanger, ensuring that the equipment remains stable during the hot and cold fluid circulation heat exchange process and avoiding the impact of shaking on the heat exchange effect. Attached Figure Description

[0014] Figure 1 This is an exploded side view of the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1Enlarged view of point A;

[0016] Figure 3 This is a top exploded view of the overall structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of this utility model.

[0018] In the figure: 1. Shell; 2. Spiral heat transfer component; 3. Cover plate; 4. Limiting plate; 5. Locking block; 6. Locking seat; 7. First limiting seat; 8. Bolt; 9. Second limiting seat; 10. First fluid interface; 11. Second fluid interface; 12. Support component. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] Please refer to Figure 1-4 As shown, this utility model provides a combined heat exchanger, including a shell 1, a spiral heat transfer element 2 is provided in the inner cavity of the shell 1, and a cover plate 3 is provided on one side of the shell 1 to seal its inner cavity. The cover plate 3 can be initially connected to the shell 1 by a limiting component, and then locked by a locking component.

[0022] When the combined heat exchanger is working, the hot and cold fluids flow in the spiral channels formed by the spiral heat transfer components 2 inside the shell 1, and exchange heat through the heat transfer plates. When disassembling the cover plate 3 for equipment maintenance, the locking component is first released, and then the cover plate 3 is quickly separated from the shell 1 by utilizing the easy-to-operate characteristics of the limiting component, so as to achieve convenient disassembly. During installation, the limiting component assists in quickly positioning the cover plate 3 and the shell 1, and then the locking component completes the firm locking to ensure the sealing effect of the cover plate 3 on the shell 1.

[0023] The limiting and locking components used in this solution significantly reduce disassembly steps and operation time, greatly improve equipment maintenance efficiency, reduce labor costs, and shorten the disassembly and installation time of cover plate 3. This makes the maintenance, cleaning, and parts replacement of the heat exchanger more efficient, reduces equipment downtime, and improves overall production efficiency. The combination of the limiting and locking components ensures the stability of the initial connection and ensures the connection strength between cover plate 3 and shell 1 through the locking component, maintaining the good sealing performance of the heat exchanger and ensuring stable and efficient heat exchange.

[0024] Specifically, the limiting assembly includes a set of limiting plates 4 movably connected to one side of the cover plate 3, two sets of locking blocks 5 symmetrically arranged on the outer wall of the limiting plates 4, and a locking seat 6 installed on the outer wall of the housing 1. By rotating the limiting plates 4, the locking blocks 5 can be engaged with the locking seat 6, thereby completing the initial connection between the cover plate 3 and the housing 1. The locking assembly includes a first limiting seat 7, bolts 8, and a second limiting seat 9. Two sets of first limiting seats 7 are symmetrically arranged on the outer wall of the limiting plates 4. The two sets of bolts 8 pass through the two sets of first limiting seats 7 in sequence and are threadedly connected to the second limiting seat 9 installed on the outer wall of the housing 1.

[0025] First, loosen bolt 8 to release the locking component restriction, rotate the limiting plate 4 to disengage the locking block 5 from the locking seat 6, and then remove the cover plate 3. During installation, align the locking block 5 on the limiting plate 4 with the locking seat 6 and rotate to engage it, completing the initial positioning. Then, use bolt 8 to thread through the first limiting seat 7 and the second limiting seat 9 to secure and lock it, ensuring that the cover plate 3 seals the housing 1.

[0026] The method of connecting the limit component with the locking component with the threaded connection makes the operation process clear, requiring no complicated tools or extensive disassembly, thus lowering the technical threshold for maintenance. Compared with traditional multi-bolt fixing, this structure reduces disassembly and installation steps, significantly shortens maintenance time, reduces equipment downtime, and improves production continuity. The limit component provides initial positioning and support, while the locking component is fastened with bolts, providing double protection for the connection between the cover plate and the shell, maintaining the sealing performance and operational stability of the heat exchanger.

[0027] Among them: the spiral heat transfer element 2 and the shell 1 cooperate to form two sets of independent water channels. The outer wall of the shell 1 is provided with two sets of first fluid interfaces 10 corresponding to the two sets of water channels. The side of the shell 1 away from the cover plate 3 is provided with two sets of second fluid interfaces 11 corresponding to the two sets of water channels, so as to realize independent circulation and heat exchange of cold and hot fluids in the two sets of water channels. Two sets of support members 12 are symmetrically installed on the outer wall of the shell 1 to support the heat exchanger.

[0028] The spiral heat transfer element 2 and the shell 1 cooperate to form two sets of independent water channels. The hot fluid flows in from the first fluid interface 10 corresponding to one set of water channels, and flows out from the second fluid interface 11 after passing through the spiral channel. The cold fluid flows in from the first fluid interface 10 corresponding to the other set of water channels, and flows out from the corresponding second fluid interface 11 along the independent spiral channel. The two exchange heat through the heat transfer element 2 and do not interfere with each other.

[0029] The design of two independent water channels enables the cold and hot fluids to form a stable circulation path, avoids fluid mixing and interference, increases the heat transfer area, enhances the heat exchange process, and significantly improves the heat exchange efficiency. The two sets of support members 12 symmetrically installed on the outer wall of the shell 1 provide stable support for the heat exchanger, ensuring that the equipment remains stable during the cold and hot fluid circulation heat exchange process and avoiding the impact of shaking on the heat exchange effect.

[0030] Working principle: First, loosen bolt 8 to release the locking component restriction, rotate the limiting plate 4 to disengage the locking block 5 from the locking seat 6, and then remove the cover plate 3. During installation, align the locking block 5 on the limiting plate 4 with the locking seat 6 and rotate to engage, completing the initial positioning. Then, use bolt 8 to thread through the first limiting seat 7 and the second limiting seat 9 to secure and lock, ensuring that the cover plate 3 seals the housing 1. The spiral heat transfer component 2 cooperates with the housing 1 to form two sets of independent water channels. Hot fluid flows in from the first fluid interface 10 corresponding to one set of water channels, flows out from the second fluid interface 11 after passing through the spiral channel; cold fluid flows in from the first fluid interface 10 corresponding to the other set of water channels, flows out from the corresponding second fluid interface 11 along the independent spiral channel. The two exchange heat through the heat transfer component 2 without interfering with each other.

[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined heat exchanger, comprising a housing (1), characterized in that: The inner cavity of the housing (1) is provided with a spiral heat transfer element (2), and a cover plate (3) is provided on one side of the housing (1) to seal its inner cavity. The cover plate (3) can be initially connected to the housing (1) by a limiting component, and then locked by a locking component.

2. The combined heat exchanger according to claim 1, characterized in that: The limiting assembly includes a set of limiting plates (4) movably connected to one side of the cover plate (3), two sets of locking blocks (5) symmetrically arranged on the outer wall of the limiting plate (4), and a locking seat (6) installed on the outer wall of the housing (1). By rotating the limiting plate (4), the locking blocks (5) can be engaged with the locking seat (6), thereby completing the initial connection between the cover plate (3) and the housing (1).

3. A combined heat exchanger according to claim 2, characterized in that: The locking assembly includes a first limiting seat (7), a bolt (8), and a second limiting seat (9). Two sets of the first limiting seats (7) are symmetrically arranged on the outer wall of the limiting plate (4). The two sets of bolts (8) pass through the two sets of the first limiting seats (7) in sequence and are threadedly connected to the second limiting seat (9) installed on the outer wall of the housing (1).

4. A combined heat exchanger according to claim 1, characterized in that: The spiral heat transfer element (2) and the shell (1) cooperate to form two sets of independent water channels. The outer wall of the shell (1) is provided with two sets of first fluid interfaces (10) corresponding to the two sets of water channels. The side of the shell (1) away from the cover plate (3) is provided with two sets of second fluid interfaces (11) corresponding to the two sets of water channels, so as to realize independent circulation heat exchange of cold and hot fluids in the two sets of water channels.

5. A combined heat exchanger according to claim 1, characterized in that: Two sets of support members (12) are symmetrically installed on the outer wall of the shell (1) to support the heat exchanger.

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