Heat exchange tube and reboiler

Abstract

The utility model discloses a kind of heat exchange tube and reboiler, the heat exchange tube includes tube body and heat transfer layer, the heat transfer layer is located at the inner surface or outer surface of the tube body, the heat transfer layer is equipped with multiple helical grooves and helical protruding parts of alternate arrangement, each the helical protruding part is equipped with groove group on. The utility model its structure can effectively increase heat exchange area and enhance heat exchange effect. Meanwhile, the three-dimensional porous structure of the utility model significantly enhances boiling heat transfer, wherein the heat transfer layer includes multiple helical grooves and helical protruding parts of alternate arrangement, the groove group cooperation on the surface of the helical groove and the helical protruding part makes the rotating flow of the medium to be heated when flowing, enhances turbulence degree, realizes the promotion of heat transfer efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange tube technology, and in particular to a heat exchange tube and a reboiler. Background Technology

[0002] Heat exchange tubes are the core components of heat exchange equipment and are widely used in power, refrigeration and other fields. Their function is to achieve efficient heat transfer between two media through the tube wall. Their performance directly determines the thermal efficiency and operational stability of the system. The heat exchange tube needs to achieve both efficient boiling heat transfer and structural reliability in high temperature, high pressure and highly corrosive media environments.

[0003] Existing heat exchange tubes are usually bare tubes, which severely restricts the improvement of heat exchange performance and results in low heat transfer efficiency. Utility Model Content

[0004] This utility model provides a heat exchange tube and a reboiler to solve the technical problem of low heat transfer efficiency of heat exchange tubes in related technologies.

[0005] In a first aspect, this utility model embodiment provides a heat exchange tube, the heat exchange tube comprising: a tube body;

[0006] A heat transfer layer is disposed on the inner or outer surface of the tube body. The heat transfer layer includes a plurality of alternating spiral grooves and spiral protrusions, and each spiral protrusion is provided with a groove group.

[0007] In some embodiments, each of the spiral grooves is arranged circumferentially around the tube body, and the radial cross-section of each spiral groove is an elliptical structure with an open top.

[0008] In some embodiments, each of the trench groups includes:

[0009] Multiple transverse grooves are spaced apart on the spiral protrusion, and each transverse groove extends along the axial direction of the tube body.

[0010] Multiple first oblique grooves, each of which is disposed between two adjacent transverse grooves.

[0011] In some embodiments, each of the trench groups further includes:

[0012] Each of the first oblique grooves has a corresponding second oblique groove, and each second oblique groove intersects with the corresponding first oblique groove.

[0013] In some embodiments, each of the second oblique grooves intersects the corresponding first oblique groove at a 60-90° angle.

[0014] In some embodiments, the radial cross-section of the first inclined groove is an elliptical structure with an open top.

[0015] In some embodiments, the depth of the transverse groove is 0.3-0.8 mm.

[0016] In some embodiments, the tube body and the heat transfer layer are integrally formed.

[0017] Secondly, this utility model embodiment also provides a reboiler, including the aforementioned heat exchange tube.

[0018] The beneficial effects of the technical solution provided by this utility model include:

[0019] This invention provides a heat exchange tube and a reboiler. The heat exchange tube includes a tube body and a heat transfer layer. The heat transfer layer is disposed on the inner or outer surface of the tube body and has multiple alternating spiral grooves and spiral protrusions. Each spiral protrusion has a groove group. This invention's structure effectively increases the heat exchange area and enhances the heat exchange effect. Simultaneously, the three-dimensional porous structure of this invention significantly strengthens boiling heat transfer. The heat transfer layer includes multiple alternating spiral grooves and spiral protrusions. The groove groups on the surfaces of the spiral grooves and spiral protrusions cooperate to generate swirling flow in the heat exchange medium, enhancing turbulence and improving heat transfer efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A front view schematic diagram of a heat exchange tube provided for an embodiment of this utility model;

[0022] Figure 2 A partial schematic diagram of a heat exchange tube provided for an embodiment of this utility model;

[0023] Figure 3 A schematic diagram of a heat exchange tube provided for an embodiment of this utility model;

[0024] Figure 4 A schematic diagram showing the unfolded shape of another heat exchange tube provided in an embodiment of this utility model;

[0025] Figure 5 A cross-sectional view of a heat exchange tube provided in an embodiment of this utility model;

[0026] Figure label:

[0027] 1. Pipe body;

[0028] 2. Heat transfer layer; 21. Spiral groove; 22. Spiral protrusion; 221. Groove group; 2211. Horizontal groove; 2212. First oblique groove; 2213. Second oblique groove. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] This utility model provides a heat exchange tube and a reboiler, which can solve the technical problem of low heat transfer efficiency of heat exchange tubes in related technologies.

[0031] See Figure 1 As shown in the figure, an embodiment of the present invention provides a heat exchange tube, which includes a tube body 1 and a heat transfer layer 2. The heat transfer layer 2 is disposed on the inner or outer surface of the tube body 1. The heat transfer layer 2 has a plurality of alternating spiral grooves 21 and spiral protrusions 22, and each spiral protrusion 22 has a groove group 221. The structure of the present invention can effectively increase the heat exchange area and enhance the heat exchange effect. At the same time, the three-dimensional porous structure of the present invention significantly enhances boiling heat transfer. The heat transfer layer 2 includes a plurality of alternating spiral grooves 21 and spiral protrusions 22. The groove groups 221 on the surface of the spiral grooves 21 and the spiral protrusions 22 cooperate to generate swirling flow of the heat exchange medium during flow, enhance turbulence, and improve heat transfer efficiency.

[0032] This invention provides a heat exchange tube comprising a tube body and a heat transfer layer. The heat transfer layer is disposed on the inner or outer surface of the tube body and has multiple alternating spiral grooves and spiral protrusions. Each spiral protrusion has a groove group. This invention's structure effectively increases the heat exchange area and enhances the heat exchange effect. Simultaneously, the three-dimensional porous structure of this invention significantly strengthens boiling heat transfer. The heat transfer layer includes multiple alternating spiral grooves and spiral protrusions. The groove groups on the surfaces of the spiral grooves and spiral protrusions cooperate to generate swirling flow in the heat exchange medium, enhancing turbulence and improving heat transfer efficiency.

[0033] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 and Figure 3 As shown, each of the spiral grooves 21 is arranged circumferentially around the tube body 1, and the radial cross-section of each spiral groove 21 is an elliptical structure with an open top. In this embodiment of the present invention, by setting the spiral grooves 21, the heat exchange medium to be exchanged generates a rotating flow when flowing through it, effectively destroying the thermal boundary layer and enhancing turbulence. Moreover, the elliptical cross-section design of the spiral grooves 21 increases the heat exchange area, further improving the heat transfer efficiency.

[0034] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 and Figure 3 As shown, each groove group 221 includes multiple transverse grooves 2211 and multiple first oblique grooves 2212. The multiple transverse grooves 2211 are spaced apart on the spiral protrusion 22, and each transverse groove 2211 extends along the axial direction of the tube body 1. Each first oblique groove 2212 is disposed between two adjacent transverse grooves 2211. In this embodiment of the present invention, by providing a spiral protrusion 22 between two adjacent spiral grooves 21 and providing the groove group 221 on the surface of the spiral protrusion 22, each groove group 221 includes multiple alternating transverse grooves 2211 and first oblique grooves 2212. Each transverse groove 2211 extends along the axial direction of the tube body 1. The transverse grooves 2211 and the first oblique grooves 2212 generate multidirectional turbulence while the heat exchange medium is flowing, thereby improving the heat transfer efficiency.

[0035] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 , Figure 4 and Figure 5 As shown, each groove group 221 further includes a second oblique groove 2213 corresponding to each of the first oblique grooves 2212, and each second oblique groove 2213 intersects with the corresponding first oblique groove 2212. In this embodiment of the present invention, a second oblique groove 2213 intersecting with each of the first oblique grooves 2212 is added to the surface of the spiral protrusion 22, forming a multi-directional intersection, which causes the heat exchange medium to generate more complex turbulent disturbances in the axial, transverse and oblique directions, completely breaking the stability of the thermal boundary layer, and significantly increasing the effective heat exchange area, thereby improving the heat exchange efficiency.

[0036] As an optional implementation, in one embodiment of the invention, each of the second inclined grooves 2213 intersects the corresponding first inclined groove 2212 at an angle of 60-90°. In this embodiment of the invention, the addition of the second inclined grooves 2213, and the 60-90° angle range between each second inclined groove 2213 and the corresponding first inclined groove 2212, ensures the heat exchange rate of the heat exchange medium while avoiding flow dead zones caused by excessively small angles, thus improving the uniformity of heat exchange.

[0037] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 5 As shown, the radial cross-section of the first inclined groove 2212 is an elliptical structure with an open top. In this embodiment of the invention, by setting the radial cross-section of the first inclined groove 2212 to an elliptical structure with an open top, the heat exchange efficiency is enhanced.

[0038] As an optional implementation, in one embodiment of the utility model, the groove depth of the transverse groove 2211 is 0.3-0.8mm. The groove depth of the transverse groove 2211 is determined according to the actual needs of the heat exchange tube. By controlling the groove depth, the heat exchange area can be controlled. In this embodiment of the utility model, the transverse groove 2211 with a groove depth of 0.3-0.8mm can ensure the heat exchange area.

[0039] As an optional implementation, in one embodiment of the invention, the tube body 1 and the heat transfer layer 2 are integrally formed. In this embodiment, by setting the tube body 1 and the heat transfer layer 2 as an integrally formed structure, structural stability under high-temperature conditions is ensured, enhancing the reliability and service life of the heat exchange tube.

[0040] This utility model embodiment also provides a reboiler, which includes the aforementioned heat exchange tube. The heat exchange tube includes a tube body 1 and a heat transfer layer 2. The heat transfer layer 2 is disposed on the inner or outer surface of the tube body 1. The heat transfer layer 2 has a plurality of alternating spiral grooves 21 and spiral protrusions 22, and each spiral protrusion 22 has a groove group 221. The structure of this utility model can effectively increase the heat exchange area and enhance the heat exchange effect. At the same time, the three-dimensional porous structure of this utility model significantly enhances boiling heat transfer. The heat transfer layer 2 includes a plurality of alternating spiral grooves 21 and spiral protrusions 22. The groove groups 221 on the surfaces of the spiral grooves 21 and spiral protrusions 22 cooperate to generate swirling flow of the heat exchange medium during flow, enhance turbulence, and improve heat transfer efficiency.

[0041] This invention provides a heat exchange tube comprising a tube body and a heat transfer layer. The heat transfer layer is disposed on the inner or outer surface of the tube body and has multiple alternating spiral grooves and spiral protrusions. Each spiral protrusion has a groove group. This invention's structure effectively increases the heat exchange area and enhances the heat exchange effect. Simultaneously, the three-dimensional porous structure of this invention significantly strengthens boiling heat transfer. The heat transfer layer includes multiple alternating spiral grooves and spiral protrusions. The groove groups on the surfaces of the spiral grooves and spiral protrusions cooperate to generate swirling flow in the heat exchange medium, enhancing turbulence and improving heat transfer efficiency.

[0042] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 and Figure 3 As shown, each of the spiral grooves 21 is arranged circumferentially around the tube body 1, and the radial cross-section of each spiral groove 21 is an elliptical structure with an open top. In this embodiment of the present invention, by setting the spiral grooves 21, the heat exchange medium to be exchanged generates a rotating flow when flowing through it, effectively destroying the thermal boundary layer and enhancing turbulence. Moreover, the elliptical cross-section design of the spiral grooves 21 increases the heat exchange area, further improving the heat transfer efficiency.

[0043] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 and Figure 3 As shown, each groove group 221 includes multiple transverse grooves 2211 and multiple first oblique grooves 2212. The multiple transverse grooves 2211 are spaced apart on the spiral protrusion 22, and each transverse groove 2211 extends along the axial direction of the tube body 1. Each first oblique groove 2212 is disposed between two adjacent transverse grooves 2211. In this embodiment of the present invention, by providing a spiral protrusion 22 between two adjacent spiral grooves 21 and providing the groove group 221 on the surface of the spiral protrusion 22, each groove group 221 includes multiple alternating transverse grooves 2211 and first oblique grooves 2212. Each transverse groove 2211 extends along the axial direction of the tube body 1. The transverse grooves 2211 and the first oblique grooves 2212 generate multidirectional turbulence while the heat exchange medium is flowing, thereby improving the heat transfer efficiency.

[0044] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 2 , Figure 4 and Figure 5As shown, each groove group 221 further includes a second oblique groove 2213 corresponding to each of the first oblique grooves 2212, and each second oblique groove 2213 intersects with the corresponding first oblique groove 2212. In this embodiment of the present invention, a second oblique groove 2213 intersecting with each of the first oblique grooves 2212 is added to the surface of the spiral protrusion 22, forming a multi-directional intersection, which causes the heat exchange medium to generate more complex turbulent disturbances in the axial, transverse and oblique directions, completely breaking the stability of the thermal boundary layer, and significantly increasing the effective heat exchange area, thereby improving the heat exchange efficiency.

[0045] As an optional implementation, in one embodiment of the invention, each of the second inclined grooves 2213 intersects the corresponding first inclined groove 2212 at an angle of 60-90°. In this embodiment of the invention, the addition of the second inclined grooves 2213, and the 60-90° angle range between each second inclined groove 2213 and the corresponding first inclined groove 2212, ensures the heat exchange rate of the heat exchange medium while avoiding flow dead zones caused by excessively small angles, thus improving the uniformity of heat exchange.

[0046] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 5 As shown, the radial cross-section of the first inclined groove 2212 is an elliptical structure with an open top. In this embodiment of the invention, by setting the radial cross-section of the first inclined groove 2212 to an elliptical structure with an open top, the heat exchange efficiency is enhanced.

[0047] As an optional implementation, in one embodiment of the utility model, the groove depth of the transverse groove 2211 is 0.3-0.8mm. The groove depth of the transverse groove 2211 is determined according to the actual needs of the heat exchange tube. By controlling the groove depth, the heat exchange area can be controlled. In this embodiment of the utility model, the transverse groove 2211 with a groove depth of 0.3-0.8mm can ensure the heat exchange area.

[0048] As an optional implementation, in one embodiment of the invention, the tube body 1 and the heat transfer layer 2 are integrally formed. In this embodiment, by setting the tube body 1 and the heat transfer layer 2 as an integrally formed structure, structural stability under high-temperature conditions is ensured, enhancing the reliability and service life of the heat exchange tube.

[0049] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0050] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A heat exchange tube, characterized in that, include: tube body(1); Heat transfer layer (2) is provided on the inner or outer surface of the tube body (1). The heat transfer layer (2) includes a plurality of alternating spiral grooves (21) and spiral protrusions (22). Each spiral protrusion (22) is provided with a groove group (221).

2. A heat exchange tube according to claim 1, characterized in that: Each of the spiral grooves (21) is arranged around the circumference of the tube body (1), and the radial cross section of each spiral groove (21) is an elliptical structure with an open top.

3. A heat exchange tube according to claim 1, characterized in that, Each of the trench groups (221) includes: Multiple transverse grooves (2211) are spaced apart on the spiral protrusion (22), and each transverse groove (2211) extends along the axial direction of the tube body (1); Multiple first oblique grooves (2212), each first oblique groove (2212) is disposed between two adjacent transverse grooves (2211).

4. A heat exchange tube according to claim 3, characterized in that, Each of the trench groups (221) further includes: Each of the first oblique grooves (2212) has a corresponding second oblique groove (2213), and each second oblique groove (2213) intersects with the corresponding first oblique groove (2212).

5. A heat exchange tube according to claim 4, characterized in that: Each of the second oblique grooves (2213) intersects the corresponding first oblique groove (2212) at a 60-90° angle.

6. A heat exchange tube according to claim 3, characterized in that: The radial cross-section of the first inclined groove (2212) is an elliptical structure with an open top.

7. A heat exchange tube according to claim 3, characterized in that: The depth of the transverse groove (2211) is 0.3-0.8 mm.

8. A heat exchange tube according to claim 1, characterized in that: The tube body (1) and the heat transfer layer (2) are integrally formed.

9. A reboiler, characterized in that, Includes a heat exchange tube as described in any one of claims 1-8.

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