A thin-walled heat exchanger with a built-in support frame structure

Abstract

This utility model relates to the field of thin-walled heat exchanger technology and discloses a thin-walled heat exchanger with a built-in support frame structure. It includes a heat exchanger shell, a support frame fixedly installed at the bottom of the shell, and an end cap fixedly installed at one end of the shell via a fixing bolt. A circular limiting groove restricts the movement trajectory of the elastic ring plate, ensuring it can only slide along a preset path. This provides stable guidance for the sealing tube sheet, preventing leakage at the tail end due to misalignment. Together with the sealing tube sheet, it seals and supports the end of the metal tube bundle, preventing media leakage at the tail end and enhancing the structural stability of the metal tube bundle end. A connecting spring in the circular groove on the inner wall of the mounting ring plate attracts the elastic support ring plate through an adsorption block, forming an elastic buffer structure that effectively alleviates the stress on the tail end structure, thereby improving the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled heat exchanger technology, specifically a thin-walled heat exchanger with a built-in support frame structure. Background Technology

[0002] In industrial production and energy conversion, heat exchangers are key devices for heat transfer, and their performance directly affects the system's energy efficiency and operational stability. Thin-walled heat exchangers, due to their use of thin heat exchange materials (such as metal tubes with a thickness of 0.5–1 mm), have advantages such as high heat transfer efficiency, light weight, and low material consumption, and are widely used in scenarios requiring efficient heat exchange. Traditional thin-walled heat exchangers typically consist of a simple arrangement of thin-walled tube bundles as their core, lacking an effective flow guiding structure. This results in a short and uneven flow path for the medium within the shell, leading to insufficient contact with the tube bundle and limited heat exchange efficiency. Although some equipment incorporates baffles, their design is often crude, causing excessive resistance to medium flow. Furthermore, localized turbulence can induce vibration in the thin-walled tube bundle, exacerbating wear. Additionally, the thin-walled material has weak pressure resistance, making the tube bundle prone to deformation, bending, or even rupture under high-pressure media impact. Especially under conditions of drastic temperature changes, the stress generated by thermal expansion and contraction can further damage the tube bundle structure, increasing the risk of media leakage. To improve structural stability, traditional designs often strengthen the support by increasing the tube bundle wall thickness or setting a rigid support frame. However, this sacrifices heat transfer efficiency (the thermal conductivity of thick-walled materials decreases), and rigid supports cannot adapt to deformation caused by temperature changes, which can easily lead to stress concentration and shorten the equipment's lifespan. Furthermore, the connection between the traditional support structure and the heat exchange components is mostly rigidly fixed. In environments with medium flow impact or vibration, the connection is prone to loosening due to resonance, which can further affect the equipment's sealing and safety. Therefore, it is necessary to design a thin-walled heat exchanger with a built-in support frame structure. Utility Model Content

[0003] The purpose of this invention is to provide a thin-walled heat exchanger with a built-in support frame structure, which solves the technical problems of easy deformation and failure of thin-walled structures and sealing failure caused by thermal stress, thereby improving heat exchange efficiency and extending equipment life.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a thin-walled heat exchanger with a built-in support frame structure, comprising a heat exchanger shell, two sets of support frames fixedly installed at the bottom of the heat exchanger shell in a symmetrical arrangement, an installation end cap fixedly installed at one end of the heat exchanger shell by a fixing bolt, and a fixing tail cap fixedly installed at the other end of the heat exchanger shell by a fixing bolt, an inlet connection pipe connected to the top of the installation end cap, and a distribution connector connected to the bottom of the installation end cap; a heat exchange support assembly disposed inside the heat exchanger shell; the heat exchange support assembly comprising: a heat exchange part disposed inside the heat exchanger shell; and a support part disposed inside the heat exchanger shell and outside the heat exchange part.

[0005] Preferably, the heat exchange component includes: a tube bundle mounting disc, which is fixedly mounted on the inner wall of one end of the heat exchanger shell; a microchannel groove, which is equidistantly provided around the inner sidewall of the heat exchanger shell; and tube bundle retaining holes equidistantly provided around the outer wall of the tube bundle mounting disc, wherein a metal tube bundle is disposed inside the tube bundle retaining holes.

[0006] Preferably, a spiral guide plate is provided on the outer side of the metal tube bundle, and the spiral guide plate is fixedly installed on the inner wall of the heat exchanger shell.

[0007] Preferably, the outer wall of the spiral guide plate is coated with a superhydrophobic coating, and the inner side wall of the spiral guide plate is fixedly installed with supporting elastic connecting plates at equal intervals.

[0008] Preferably, a spring connecting piece is fixedly installed on the inner side wall of the supporting elastic connecting plate, and the other end of the spring connecting piece is connected to the outer wall of the metal tube bundle.

[0009] Preferably, the supporting part includes: a circular limiting slide groove, the circular limiting slide groove being formed on the inner wall of the fixed tail cover; an elastic ring plate is slidably connected inside the circular limiting slide groove, a sealing tube plate is fixedly installed on the outer wall of the elastic ring plate, and the sealing tube plate is disposed inside the fixed tail cover; an mounting ring plate is disposed on the outer side of the sealing tube plate, and the mounting ring plate is fixedly installed on the inner wall of the fixed tail cover.

[0010] Preferably, the inner sidewall of the mounting ring plate is provided with a circular groove, and a connecting spring is fixedly installed at equal intervals on the inner circumference of the circular groove. An adsorption block is fixedly installed at the other end of the connecting spring. The adsorption block is provided with an elastic support ring plate by mutual attraction, and the elastic support ring plate is fixedly installed on the outer wall of the sealing tube plate.

[0011] This invention provides a thin-walled heat exchanger with a built-in support frame structure. It has the following advantages: (1) This utility model provides precise installation positioning for metal tube bundles by setting tube bundle mounting holes on the outer wall of the tube bundle mounting plate, ensuring that multiple sets of metal tube bundles are arranged in an orderly manner, increasing the contact area with the medium. At the same time, the spiral guide plate is fixed on the inner wall of the heat exchanger shell, which can guide the low temperature medium to flow along the spiral path, prolonging the residence time of the medium in the shell, and greatly improving the heat exchange efficiency with the metal tube bundle. The superhydrophobic coating on its outer wall reduces the adhesion of the low temperature medium, reduces the flow resistance, and makes the medium flow more smoothly. With the support elastic connecting plate and spring connecting piece, it forms an elastic support tightly against the outer wall of the metal tube bundle. It can provide radial support for the thin-walled metal tube bundle, resist the deformation risk caused by the medium pressure, and absorb stress through its own elasticity when the temperature changes cause thermal expansion and contraction, avoiding damage to the metal tube bundle due to rigid force, extending its service life, and achieving the effect of improving the overall heat exchange efficiency.

[0012] (2) This utility model restricts the movement trajectory of the elastic ring plate by setting a circular limiting groove, ensuring that it can only slide along the preset path, providing a stable movement guide for the sealing tube plate, avoiding leakage of the tail structure due to deviation, and playing a sealing and supporting role for the end of the metal tube bundle in conjunction with the sealing tube plate, preventing the medium from leaking at the tail, while enhancing the structural stability of the end of the metal tube bundle. The connecting spring in the circular groove on the inner side wall of the mounting ring plate attracts the elastic support ring plate through the adsorption block to form an elastic buffer structure. When the metal tube bundle expands and contracts due to temperature changes, the connecting spring can expand and contract adaptively, and in conjunction with the elastic support ring plate to absorb the deformation force, effectively alleviate the stress on the tail structure and achieve the effect of improving the sealing. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of a thin-walled heat exchanger with a built-in support frame structure according to the present invention. Figure 3 This is an internal view of a thin-walled heat exchanger with a built-in support frame structure according to the present invention. Figure 4 This is a side view of the support structure of a thin-walled heat exchanger with a built-in support frame according to the present invention.

[0014] In the diagram: 1 Heat exchanger shell, 2 Support frame, 3 Mounting end cover, 4 Fixed tail cover, 5 Inlet connection pipe, 6 Distribution connector, 7 Heat exchange support assembly, 71 Heat exchange part, 711 Tube bundle mounting circular plate, 712 Tube bundle clamping hole, 713 Metal tube bundle, 714 Spiral guide plate, 715 Superhydrophobic coating, 716 Support elastic connection plate, 717 Spring connecting piece, 718 Microchannel groove, 72 Support part, 721 Circular limiting slide groove, 722 Elastic ring plate, 723 Sealing tube sheet, 724 Mounting ring plate, 725 Circular groove, 726 Connecting spring, 727 Adsorption block, 728 Elastic support ring plate. Detailed Implementation

[0015] 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.

[0016] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example 1:

[0017] Based on the existing problems of thin-walled structures being prone to deformation and failure, and sealing failure caused by thermal stress, the present invention provides a preferred embodiment of a thin-walled heat exchanger with an internal support frame structure, for example... Figure 1-4 As shown: A thin-walled heat exchanger with a built-in support frame structure includes a heat exchanger shell 1, with two sets of support frames 2 fixedly installed at the bottom of the heat exchanger shell 1 in a symmetrical arrangement. One end of the heat exchanger shell 1 is fixedly installed with an end cap 3 by a fixing bolt, and the other end of the heat exchanger shell 1 is fixedly installed with a tail cap 4 by a fixing bolt. An inlet connection pipe 5 is connected to the top of the end cap 3, and a distribution connector 6 is connected to the bottom of the end cap 3. A heat exchange support assembly 7 is disposed inside the heat exchanger shell 1. The heat exchange support assembly 7 includes: a heat exchange part 71 disposed inside the heat exchanger shell 1; and a support part 72 disposed inside the heat exchanger shell 1 and outside the heat exchange part 71.

[0018] The heat exchange component 71 includes: a tube bundle mounting circular plate 711, which is fixedly mounted on the inner wall of one end of the heat exchanger shell 1; a microchannel groove 718, which has an inner sidewall of the heat exchanger shell 1 equidistantly arranged around its circumference; and tube bundle clamping holes 712 equidistantly arranged around the outer wall of the tube bundle mounting circular plate 711, with metal tube bundles 713 disposed inside the tube bundle clamping holes 712.

[0019] A spiral guide plate 714 is provided on the outer side of the metal tube bundle 713, and the spiral guide plate 714 is fixedly installed on the inner wall of the heat exchanger shell 1.

[0020] The outer wall of the spiral guide plate 714 is coated with a superhydrophobic coating 715, and the inner side wall of the spiral guide plate 714 is fixedly installed with supporting elastic connecting plates 716 at equal intervals around the circumference.

[0021] A spring connecting piece 717 is fixedly installed on the inner side wall of the supporting elastic connecting plate 716, and the other end of the spring connecting piece 717 is connected to the outer wall of the metal tube bundle 713.

[0022] Furthermore, in this embodiment, the tube bundle 713 is precisely positioned for installation by the tube bundle mounting circular plate 711 with tube bundle clamping holes 712 on its outer wall, ensuring that multiple sets of metal tube bundles are arranged in an orderly manner, increasing the contact area with the medium. At the same time, the spiral guide plate 714 is fixed to the inner wall of the heat exchanger shell 1, which can guide the low-temperature medium to flow along the spiral path, prolonging the residence time of the medium in the shell and significantly improving the heat exchange efficiency with the metal tube bundle 713. The superhydrophobic coating 715 on its outer wall reduces the adhesion of the low-temperature medium, reduces the flow resistance, and makes the medium flow more smoothly. Together with the support elastic connecting plate 716 and the spring connecting piece 717, they are tightly attached to the outer wall of the metal tube bundle 713 to form elastic support. This can provide radial support for the thin-walled metal tube bundle, resist the deformation risk caused by the medium pressure, and absorb stress through its own elasticity when the temperature changes cause thermal expansion and contraction, avoiding damage to the metal tube bundle due to rigid force and extending its service life. Example 2:

[0023] Based on Embodiment 1, a preferred embodiment of the thin-walled heat exchanger with a built-in support frame structure provided by this utility model is, for example... Figure 1-4 As shown: The support part 72 includes: a circular limiting slide groove 721, which is formed on the inner wall of the fixed tail cover 4; an elastic ring plate 722 is slidably connected inside the circular limiting slide groove 721; a sealing tube plate 723 is fixedly installed on the outer wall of the elastic ring plate 722, and the sealing tube plate 723 is disposed inside the fixed tail cover 4; an installation ring plate 724 is disposed on the outer side of the sealing tube plate 723, and the installation ring plate 724 is fixedly installed on the inner wall of the fixed tail cover 4.

[0024] The inner wall of the mounting ring plate 724 is provided with a circular groove 725. A connecting spring 726 is fixedly installed at equal intervals on the inner circumference of the circular groove 725. An adsorption block 727 is fixedly installed at the other end of the connecting spring 726. An elastic support ring plate 728 is set on the adsorption block 727 by mutual attraction, and the elastic support ring plate 728 is fixedly installed on the outer wall of the sealing tube plate 723.

[0025] Furthermore, in this embodiment, the circular limiting groove 721 restricts the movement trajectory of the elastic ring plate 722, ensuring that it can only slide along a preset path. This provides a stable guide for the movement of the sealing tube plate 723, preventing leakage at the tail end due to displacement. Together with the sealing tube plate 723, it seals and supports the end of the metal tube bundle 713, preventing leakage of the medium at the tail end and enhancing the structural stability of the metal tube bundle end. The connecting spring 726 in the circular groove 725 on the inner side wall of the mounting ring plate 724 is attracted to the elastic support ring plate 728 through the adsorption block 727, forming an elastic buffer structure. When the metal tube bundle 713 expands or contracts due to temperature changes, the connecting spring can expand or contract adaptively, working with the elastic support ring plate to absorb deformation force and effectively alleviate the stress on the tail end structure.

[0026] During use, the first step is the introduction and initial distribution of the medium. The heat exchanger shell 1 is securely placed by two sets of symmetrical support frames 2 at the bottom. The high-temperature medium to be exchanged enters through the inlet connection pipe 5 at the top of the mounting end cover 3, while the low-temperature medium is introduced into the cavity between the heat exchanger shell 1 and the metal tube bundle 713 through the distribution connector 6. The mounting end cover 3 and the fixed tail cover 4 are tightly connected to the heat exchanger shell 1 by fixing bolts to ensure that the medium flows in a closed space and avoids leakage. Next, the core heat exchange stage begins. The high-temperature medium flows into the metal tube bundle 713 within the tube bundle retainer 712 on the outer wall of the tube bundle mounting plate 711, while the low-temperature medium enters the interior of the heat exchanger shell 1. A spiral guide plate 714 fixed to the inner wall of the heat exchanger shell 1 guides the low-temperature medium along a spiral path, extending its residence time within the shell and increasing its contact area with the metal tube bundle 713. The superhydrophobic coating 715 on the outer wall of the spiral guide plate 714 reduces the adhesion of the low-temperature medium and improves flow efficiency. As the high-temperature medium flows within the metal tube bundle 713, it transfers heat to the low-temperature medium on the outside through the tube walls, completing the heat exchange.

[0027] Furthermore, the support structure plays a simultaneous role during the heat exchange process. The elastic connecting plate 716 on the inner wall of the spiral guide plate 714 and the spring connecting piece 717 form an elastic support, closely adhering to the outer wall of the metal tube bundle 713. This provides radial support for the thin-walled metal tube bundle 713, preventing it from deforming under medium pressure. It also absorbs stress through its own elasticity when thermal expansion and contraction occur due to temperature changes, avoiding rigid damage. The microchannel grooves 718 on the inner wall of the heat exchanger shell 1 can guide the flow of some low-temperature medium, further enhancing the heat exchange effect. Meanwhile, the support part 72 ensures the stability of the tail structure. The circular limiting groove 721 on the inner wall of the fixed tail cover 4 restricts the movement trajectory of the elastic ring plate 722. The sealing tube plate 723 connected to the elastic ring plate 722 provides sealing and support for the end of the metal tube bundle 713. The connecting spring 726 in the circular groove 725 on the inner side wall of the mounting ring plate 724 is attracted to the elastic support ring plate 728 through the adsorption block 727, providing elastic buffer for the sealing tube plate 723. When the metal tube bundle 713 expands and contracts due to temperature changes, the connecting spring 726 can expand and contract adaptively, working with the elastic support ring plate 728 to absorb deformation force, ensuring the sealing and stability of the tail structure. After heat exchange is completed, the high-temperature medium is discharged from the fixed tail cap 4 through the end of the metal tube bundle 713, while the low-temperature medium, carrying the absorbed heat, flows out from the corresponding outlet of the heat exchanger shell 1. Throughout the process, the heat exchange and support structure work together to effectively transfer heat while ensuring that the thin-walled components remain stable under changes in medium pressure and temperature, thus extending the service life of the equipment.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A thin-walled heat exchanger with an integrated support frame structure, comprising a heat exchanger housing (1), characterized in that: The bottom of the heat exchanger shell (1) is fixedly installed with a support frame (2), and there are two sets in total, arranged symmetrically. One end of the heat exchanger shell (1) is fixedly installed with an installation end cover (3) by a fixing bolt, and the other end of the heat exchanger shell (1) is fixedly installed with a fixing tail cover (4) by a fixing bolt. The top of the installation end cover (3) is connected to an inlet connection pipe (5), and the bottom of the installation end cover (3) is connected to a distribution connector (6). Heat exchange support assembly (7), which is disposed inside the heat exchanger shell (1); The heat exchange support assembly (7) includes: Heat exchange section (71) is disposed inside the heat exchanger shell (1); The support part (72) is located inside the heat exchanger housing (1) and outside the heat exchange part (71).

2. A thin-walled heat exchanger with an integrated support frame structure according to claim 1, characterized in that: The heat exchange component (71) includes: Tube bundle mounting disc (711) is fixedly mounted on the inner wall of one end of the heat exchanger shell (1); Microchannel groove (718), wherein the inner sidewall of the heat exchanger shell (1) is provided at equal intervals around the circumference of the microchannel groove (718); The outer wall of the tube bundle mounting circular plate (711) is provided with tube bundle retaining holes (712) at equal intervals, and a metal tube bundle (713) is provided inside the tube bundle retaining holes (712).

3. A thin-walled heat exchanger with an integrated support frame structure according to claim 2, characterized in that: The outer side of the metal tube bundle (713) is provided with a spiral guide plate (714), and the spiral guide plate (714) is fixedly installed on the inner wall of the heat exchanger shell (1).

4. A thin-walled heat exchanger with an integrated support frame structure according to claim 3, characterized in that: The outer wall of the spiral guide plate (714) is coated with a superhydrophobic coating (715), and the inner side wall of the spiral guide plate (714) is fixedly installed with a support elastic connecting plate (716) at equal intervals.

5. A thin-walled heat exchanger with an integrated support frame structure according to claim 4, characterized in that: A spring connecting piece (717) is fixedly installed on the inner side wall of the supporting elastic connecting plate (716), and the other end of the spring connecting piece (717) is connected to the outer wall of the metal tube bundle (713).

6. A thin-walled heat exchanger with a built-in support frame structure according to claim 1, characterized in that: The support portion (72) includes: A circular limiting groove (721) is provided on the inner wall of the fixed tail cover (4); The circular limiting groove (721) is slidably connected to an elastic ring plate (722). A sealing tube plate (723) is fixedly installed on the outer wall of the elastic ring plate (722). The sealing tube plate (723) is located inside the fixed tail cover (4). An installation ring plate (724) is provided on the outer side of the sealing tube plate (723). The installation ring plate (724) is fixedly installed on the inner wall of the fixed tail cover (4).

7. A thin-walled heat exchanger with an integrated support frame structure according to claim 6, characterized in that: The inner sidewall of the mounting ring plate (724) is provided with a circular groove (725). A connecting spring (726) is fixedly installed at equal intervals on the inner circumference of the circular groove (725). An adsorption block (727) is fixedly installed at the other end of the connecting spring (726). An elastic support ring plate (728) is set on the adsorption block (727) by mutual attraction. The elastic support ring plate (728) is fixedly installed on the outer wall of the sealing tube plate (723).

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