Tube pass type heat exchanger

Abstract

The utility model discloses a tube pass type heat exchanger which comprises a tube plate, a liquid inlet cavity and a gas collecting cavity are arranged on the tube plate, a liquid inlet tube is connected to the liquid inlet cavity, a gas outlet tube is connected to the gas collecting cavity, the tube pass type heat exchanger further comprises a rectangular shell, the rectangular shell is connected with the tube plate, a guide plate is arranged in the rectangular shell, and the guide plate and the rectangular shell are welded and fixed. The shell is designed to be a regular rectangular shell, the internal space is more regular, arrangement and installation of the heat exchange tube bundle are more convenient, meanwhile, the heat conducting plate and the rectangular shell are fixed into a whole in a welded mode, the guide plate provides additional support for the rectangular shell, the structural strength and structural firmness of the rectangular shell are effectively enhanced, and the heat exchange tube bundle is more convenient to install. The structural stability is improved, and the non-deformability of the rectangular shell is enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, specifically relating to a tube-type heat exchanger. Background Technology

[0002] A tube-side heat exchanger is a heat exchange device consisting of two sets of pipes (or tube bundles), one inside and one outside. Its working principle involves introducing two media at different temperatures into the inner and outer pipes respectively, achieving efficient heat transfer through heat conduction on the tube surfaces. Typically, the heat source medium flows in the inner pipe, transferring heat to the refrigerant in the outer pipe, thus achieving heat exchange. Existing tube-side heat exchangers have a cylindrical outer shell with a circular cross-section inside. Since the diameter of the circular cross-section is fixed, the installation of the internal heat exchange tube bundle requires special consideration of the gap and fit between the heat exchange tube bundle and the outer shell, making the arrangement and positioning of the heat exchange tube bundle within the shell more complex. Summary of the Invention

[0003] The purpose of this utility model is to provide a technical solution for a tube-type heat exchanger that addresses the shortcomings of existing technologies. The structure is ingeniously and rationally designed, and highly practical. The outer shell is designed as a regular rectangular shell, making the internal space more regular and facilitating the arrangement and installation of the heat exchange tube bundle. At the same time, the guide plate is welded and fixed to the rectangular shell as a whole. The guide plate provides additional support for the rectangular shell, effectively enhancing the structural strength and robustness of the rectangular shell, improving structural stability, and enhancing the deformation resistance of the rectangular shell.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A tube-sheet heat exchanger includes a tube sheet with a liquid inlet chamber and a gas collecting chamber. A liquid inlet pipe is connected to the liquid inlet chamber, and a gas outlet pipe is connected to the gas collecting chamber. It also includes a rectangular outer shell connected to the tube sheet. A guide plate is installed inside the rectangular shell and welded to it. The structure is ingeniously designed and highly practical. The regular rectangular shell design makes the internal space more regular, facilitating the arrangement and installation of the heat exchange tube bundle. Furthermore, the guide plate is welded to the rectangular shell to form a whole, providing additional support for the rectangular shell, effectively enhancing its structural strength and robustness, improving structural stability, and increasing its resistance to deformation.

[0006] Furthermore, the guide vane has positioning clips on its sides, and the rectangular outer shell has positioning slots. The positioning clips and positioning slots are matched one-to-one, with the positioning clips engaging within the slots and then welded to the rectangular outer shell. This cooperation ensures precise positioning of the guide vane within the rectangular outer shell, facilitating assembly and guaranteeing the stability and reliability of the entire structure. Welding the connection between the positioning clips and the rectangular outer shell further enhances the structure's vibration and impact resistance. Preferably, in the actual design, positioning clips are provided on all four side walls of the guide vane, and corresponding positioning slots are provided on the four side walls of the rectangular outer shell, ensuring that all four sides of the rectangular outer shell are welded to the guide vane, effectively improving the overall structural stability and reliability.

[0007] Furthermore, the positioning card and the rectangular shell are fixed by MAG welding or TIG welding. MAG welding is highly efficient and can effectively ensure the welding quality between the positioning card and the rectangular shell, ensuring the stability and reliability of the connection. TIG welding results in a high-quality, stable, and reliable weld at the connection between the positioning card and the rectangular shell, with good airtightness and wide applicability.

[0008] Furthermore, the end of the positioning card extends 1-6mm into the positioning hole groove, forming a protrusion. After the positioning card is engaged with the corresponding positioning hole groove, a portion always protrudes from the outside of the rectangular shell, forming a protrusion. This further increases the connection strength between the positioning card and the positioning hole groove. During the welding process, the protrusion can also prevent displacement or deformation of the guide plate during welding, which is more conducive to the actual welding operation. At the same time, the protrusion serves as a clear marker, which helps to improve welding quality, facilitates the control of welding parameters during the welding process, and is also conducive to the inspection of the welded part quality after welding. It also facilitates subsequent maintenance. Moreover, the length of the extended positioning card is limited to 1-6mm, and the size design is reasonable, which can effectively ensure the tight fit between the positioning card and the positioning hole groove, improving the connection stability and reliability.

[0009] Furthermore, the guide plate includes a first guide plate and a second guide plate, which are staggered and spaced apart. The staggered and spaced guide plates can more effectively guide and change the flow direction and speed of the fluid within the rectangular shell, thereby improving the heat transfer efficiency.

[0010] Furthermore, a support base is provided at the bottom of the rectangular shell. The support base includes an integrally formed attachment section, an inclined section, and a placement section. The inclined section connects the attachment section and the placement section. The top of the support base is bent to form the attachment section, which is attached and welded to the bottom surface of the rectangular shell. The bottom of the support base is bent to form the placement section. The attachment section, inclined section, and placement section are integrally formed, which effectively ensures the overall structural strength and stability of the support base, making it less prone to deformation and damage under stress, thereby ensuring the stability and safety of the heat exchanger. The attachment section is attached and welded to the bottom surface of the rectangular shell, ensuring the contact area between the support base and the rectangular shell, and ensuring the connection strength between the support base and the rectangular shell. The placement section is set horizontally, which can ensure the stable placement of the support base on the ground and improve the stability and safety of the heat exchanger.

[0011] Furthermore, the connection between the attachment section and the inclined section, as well as the connection between the placement section and the inclined section, are all connected by arc segments. The smooth transition design of the arc segments can reduce stress concentration at the connection points, improve the structural strength of the connection points, and make the support structure more stable and robust.

[0012] Furthermore, the rectangular shell is made of carbon steel or stainless steel, with a thickness of 1–8 mm. Carbon steel has high strength, capable of withstanding large loads and forces, making the rectangular shell more robust and durable, with lower manufacturing costs and easier processing and forming. Carbon steel also has good welding properties, facilitating the assembly and maintenance of the rectangular shell. Stainless steel has strong corrosion resistance, allowing the rectangular shell to be used in harsher environments, extending the service life of the heat exchanger. Stainless steel also has sufficient strength and good toughness, ensuring the overall load-bearing capacity of the rectangular shell. At the same time, limiting the thickness of the rectangular shell to between 1 and 8 mm gives it sufficient rigidity and stability, enabling it to withstand greater external pressure and deformation.

[0013] Furthermore, the thickness of the guide plate is 1-5mm to ensure the structural strength of the guide plate, so that the guide plate is not easily deformed or damaged when subjected to fluid impact, thereby ensuring the stable operation of the heat exchanger.

[0014] Furthermore, the sidewalls of the rectangular shell are provided with reinforcing ribs, which are formed by protrusions or depressions on the sidewalls of the rectangular shell. The height of the reinforcing ribs is 3 to 15 mm, the spacing between the reinforcing ribs is 15 to 50 mm, and the width of the reinforcing ribs is 3 to 40 mm. The protrusion or depression structure of the reinforcing ribs can increase the local thickness of the shell, improve the structural strength and rigidity of the shell, and make the shell better resist deformation when subjected to external forces.

[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0016] This utility model features a clever and reasonable structural design with strong practicality. The outer shell is designed as a regular rectangular shell, making the internal space more regular and facilitating the arrangement and installation of the heat exchange tube bundle. At the same time, the guide plate is welded and fixed to the rectangular shell as a whole. The guide plate provides additional support for the rectangular shell, effectively enhancing the structural strength and robustness of the rectangular shell, improving structural stability, and enhancing the rectangular shell's resistance to deformation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a tube-type heat exchanger according to the present invention;

[0019] Figure 2 for Figure 1 A structural diagram from another perspective;

[0020] Figure 3 This is a schematic diagram of the distribution structure of the guide vanes in this utility model;

[0021] Figure 4 This is a schematic diagram of the rectangular outer shell in this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the guide plate within the rectangular outer shell of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the first guide plate in this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the second guide plate in this utility model;

[0025] Figure 8 This is a structural diagram of the rectangular outer shell of this utility model with reinforcing ribs.

[0026] In the figure: 1-Tube sheet; 2-Rectangular shell; 3-Liquid inlet chamber; 4-Gas collection chamber; 5-Liquid inlet pipe; 6-Gas outlet pipe; 7-Guide plate; 8-First guide plate; 9-Second guide plate; 10-Positioning clip; 11-Positioning slot; 12-Protrusion; 13-Support base; 14-Attachment section; 15-Inclined section; 16-Placement section; 17-Arc section; 18-Reinforcing rib. Detailed Implementation

[0027] like Figures 1 to 8As shown, this utility model discloses a tube-pass heat exchanger, including a tube sheet 1, a liquid inlet chamber 3 and a gas collecting chamber 4. A liquid inlet pipe 5 is connected to the liquid inlet chamber 3, and a gas outlet pipe 6 is connected to the gas collecting chamber 4. It also includes a rectangular outer shell 2, which is connected to the tube sheet 1. A guide plate 7 is installed inside the rectangular outer shell 2 and welded to it. The structure is ingeniously and rationally designed, highly practical. The regular rectangular outer shell 2 makes the internal space more regular, facilitating the arrangement and installation of the heat exchange tube bundle. Furthermore, the guide plate 7 is welded to the rectangular outer shell 2 to form a whole, providing additional support for the rectangular outer shell 2, effectively enhancing its structural strength and robustness, improving structural stability, and increasing its resistance to deformation.

[0028] The guide plate 7 has a positioning clip 10 on its side, and the rectangular shell 2 has a positioning slot 11. The positioning clip 10 and the positioning slot 11 are matched one-to-one. The positioning clip 10 is locked in place within the positioning slot 11, and the positioning clip 10 is welded to the rectangular shell 2. The positioning clip 10 and the positioning slot 11 cooperate to ensure the precise positioning of the guide plate 7 within the rectangular shell 2, facilitating actual assembly and ensuring the stability and reliability of the entire structure. Welding the connection between the positioning clip 10 and the rectangular shell 2 further improves the vibration resistance and impact resistance of the entire structure. In actual design, it is preferable to have positioning clips 10 on all four side walls of the guide plate 7, and corresponding positioning slots 11 on the four side walls of the rectangular shell 2, so that all four sides of the rectangular shell 2 are welded to the guide plate 7, effectively improving the overall structural stability and reliability. The positioning card 10 and the rectangular shell 2 are fixed by MAG welding or TIG welding. MAG welding is efficient and can effectively ensure the welding quality between the positioning card 10 and the rectangular shell 2, ensuring the stability and reliability of the connection. TIG welding results in a high-quality, stable and reliable weld at the connection between the positioning card 10 and the rectangular shell 2, with good airtightness and wide applicability.

[0029] The end of the positioning card part 10 extends out of the positioning hole groove 11 by about 1 to 6 mm, forming a protrusion 12. After the positioning card part 10 is engaged with the corresponding positioning hole groove 11, a part of it always extends out of the rectangular shell 2, forming the protrusion 12, which further increases the connection strength between the positioning card part 10 and the positioning hole groove 11. During the welding process, the protrusion 12 can also prevent displacement or deformation of the guide plate 7 during welding, which is more conducive to the actual welding operation. At the same time, the protrusion 12 serves as a clear marker, which can help improve the welding quality, facilitate the control of welding parameters during the welding process, facilitate the inspection of the welded part quality after welding, and facilitate subsequent maintenance. Moreover, the length of the extension of the positioning card part 10 is limited to 1 to 6 mm, and the size design is reasonable, which can effectively ensure the tight fit between the positioning card part 10 and the positioning hole groove 11, and improve the connection stability and reliability.

[0030] The thickness of the guide plate 7 is 1-5mm, ensuring its structural strength and preventing deformation or damage when subjected to fluid impact, thus guaranteeing the stable operation of the heat exchanger. The guide plate 7 includes a first guide plate 8 and a second guide plate 9, which are staggered and spaced apart. This staggered arrangement of the guide plates 7 can more effectively guide and change the flow direction and velocity of the fluid within the rectangular outer shell 2, thereby improving heat transfer efficiency.

[0031] A support base 13 is provided at the bottom of the rectangular shell 2. The support base 13 includes an integrally formed attachment section 14, an inclined section 15, and a placement section 16. The inclined section 15 connects the attachment section 14 and the placement section 16. The top of the support base 13 is bent to form the attachment section 14, which is attached and welded to the bottom surface of the rectangular shell 2. The bottom of the support base 13 is bent to form the placement section 16. The attachment section 14, the inclined section 15, and the placement section 16 are integrally formed, which effectively ensures the overall structural strength and stability of the support base 13, making it less prone to deformation and damage when subjected to force, thereby ensuring the stability and safety of the heat exchanger. The attachment section 14 is attached and welded to the bottom surface of the rectangular shell 2, ensuring the contact area between the support base 13 and the rectangular shell 2, and ensuring the connection strength between the support base 13 and the rectangular shell 2. The placement section 16 is set horizontally, which can ensure that the support base 13 is placed stably on the ground, improving the support and placement stability and safety of the heat exchanger. The connection between the attachment section 14 and the inclined section 15, and the connection between the placement section 16 and the inclined section 15, are all connected by a rounded section 17. The smooth transition design of the rounded section 17 can reduce stress concentration at the connection and improve the structural strength of the connection, making the support base 13 structure more stable and firm.

[0032] The rectangular outer shell 2 is made of carbon steel or stainless steel, with a thickness of 1-8mm. Carbon steel has high strength, capable of withstanding large loads and forces, making the rectangular outer shell 2 more robust and durable, with lower manufacturing costs and easier processing and forming. Carbon steel also has good weldability, facilitating assembly and maintenance. Stainless steel has strong corrosion resistance, allowing the rectangular outer shell 2 to be used in harsher environments, extending the service life of the heat exchanger. Stainless steel also possesses sufficient strength and good toughness, ensuring the overall load-bearing capacity of the rectangular outer shell 2. Simultaneously limiting the thickness of the rectangular outer shell 2 to between 1-8mm provides sufficient rigidity and stability, enabling it to withstand greater external pressure and deformation. The rectangular outer shell 2 can employ a design with two L-shaped side plates, the connection between which is fixed by welding.

[0033] The rectangular shell 2 has reinforcing ribs 18 on its sidewalls. The reinforcing ribs 18 are formed by protrusions or recesses on the sidewalls of the rectangular shell 2. The height of the reinforcing ribs 18 is 3-15mm. By reasonably limiting the height of the reinforcing ribs 18, the rectangular shell 2 can better resist external pressure and deformation. The spacing of the reinforcing ribs 18 is 15-50mm. By reasonably limiting the spacing of the reinforcing ribs 18, the overall stability of the rectangular shell 2 can be ensured. The width of the reinforcing ribs 18 is 3-40mm. By reasonably limiting the width of the reinforcing ribs 18, stress can be better distributed and the load-bearing capacity of the rectangular shell 2 can be improved. The protrusions or recesses of the reinforcing ribs 18 can increase the local thickness of the shell, improve the structural strength and rigidity of the shell, and make the shell better resist deformation when subjected to external forces. The reinforcing ribs 18 can be semi-circular or V-shaped, etc., which can increase the strength of the rectangular shell 2.

[0034] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A tube-side heat exchanger, comprising a tube sheet; Its features are, Also includes: A rectangular housing, which is connected to the tube sheet; A flow guide plate is provided inside the rectangular outer shell, and the flow guide plate is welded and fixed to the rectangular outer shell; The side of the guide plate is provided with a positioning card part, and the rectangular shell is provided with a positioning hole groove. The positioning card part and the positioning hole groove are matched one by one. The positioning card part is limited and locked in the positioning hole groove. The positioning card part is welded and fixed to the rectangular shell.

2. The tube-side heat exchanger according to claim 1, characterized in that: The positioning card and the rectangular outer shell are fixed by MAG welding or TIG welding.

3. A tube-side heat exchanger according to claim 1, characterized in that: The end of the positioning card extends 1-6mm from the positioning hole groove, forming a protrusion.

4. A tube-side heat exchanger according to claim 1, characterized in that: The guide plate includes a first guide plate and a second guide plate, which are staggered and spaced apart.

5. A tube-side heat exchanger according to claim 1, characterized in that: The bottom of the rectangular shell is provided with a support base, which includes an attachment section, an inclined section and a placement section with an integrally formed structure. The inclined section is connected between the attachment section and the placement section. The top of the support base is bent to form the attachment section. The attachment section is attached and welded to the bottom surface of the rectangular shell. The bottom of the support base is bent to form the placement section.

6. A tube-side heat exchanger according to claim 5, characterized in that: The connection between the attaching section and the inclined section, and the connection between the placement section and the inclined section, are all made by using arc-shaped transition connections.

7. A tube-side heat exchanger according to claim 1, characterized in that: The rectangular outer shell is made of carbon steel or stainless steel, and the thickness of the rectangular outer shell is 1 to 8 mm.

8. A tube-side heat exchanger according to claim 1, characterized in that: The thickness of the guide plate is 1 to 5 mm.

9. A tube-side heat exchanger according to claim 1, characterized in that: The rectangular shell has reinforcing ribs on its sidewalls. The reinforcing ribs are formed by protrusions or depressions on the sidewalls of the rectangular shell. The height of the reinforcing ribs is 3 to 15 mm, the spacing between the reinforcing ribs is 15 to 50 mm, and the width of the reinforcing ribs is 3 to 40 mm.

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