Winding pipe type heat exchanger for enhancing heat transfer
The wound tube heat exchanger addresses uneven heat exchange by employing magnetic coupling for radial fluid motion and stirring blades, improving heat transfer efficiency and uniformity.
Patent Information
- Application Number
- CN202323556704.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2033-12-25
AI Technical Summary
Existing wound tube heat exchangers experience uneven heat exchange due to unequal contact between cooling fluids in different layers, particularly at fast flow rates, leading to inefficient heat transfer and resource waste.
A wound tube heat exchanger with inner and outer rotating structures utilizing magnetic coupling for contactless rotation, inducing radial fluid motion and turbulence to enhance heat transfer, combined with stirring blades to ensure uniform fluid mixing.
Enhances heat transfer efficiency by uniformly mixing cooling fluids across layers, increasing heat exchange effectiveness and reducing resource waste.
Smart Images
Figure CN222298569U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of heat exchangers, and in particular to a wound tube heat exchanger with enhanced heat transfer. Background Art
[0002] The spirally wound tube heat exchanger is mainly composed of a shell, a tube bundle and a core tube. After the heat exchange tube is connected to the tube sheet, it is welded and fixed to the shell. There are fluid inlet and outlet pipes on the shell and the heads at both ends. The wound tube bundle of the wound tube heat exchanger is wound by multiple layers of spiral tubes. The gaps between the layers and the tubes are kept uniform and consistent by gaskets. When the cooling fluid flows axially in the shell, there is an uneven temperature change with the fluid in the heat exchange tube. Specifically, the cooling fluid in the outermost layer close to the inner wall of the shell contacts more with the inside of the shell, while the cooling fluid in the inner layer contacts the outer walls of the adjacent two layers of the winding tube, resulting in the temperature of the outer cooling fluid being lower than that of the inner cooling fluid. Especially under the condition of fast shell fluid flow rate, the cooling liquid does not fully and evenly contact and exchange heat with the hot fluid in the winding tube and flows out from the shell outlet and is replaced, resulting in a waste of resources. It can be seen that the existing technology needs to be further improved and enhanced. Utility Model Content
[0003] The utility model provides a wound tube heat exchanger with enhanced heat transfer, which is used to solve the problem of uneven heat exchange of fluid in the shell side of the wound tube heat exchanger.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A wound tube heat exchanger for enhanced heat transfer comprises a heat exchanger shell and a multi-layer spiral winding tube arranged in the heat exchanger shell. The outer wall of the heat exchanger shell is provided with an outer rotating structure for rotation, and the inner wall of the heat exchanger shell is provided with an inner rotating structure for rotation. The outer rotating structure and the inner rotating structure can realize contactless transmission rotation. When the inner rotating structure rotates, the coolant moving axially in the heat exchanger shell can produce radial movement, generate turbulence to enhance heat transfer.
[0006] The wound tube heat exchanger of the utility model provides an inner rotating structure on the inner wall of the heat exchanger shell and an outer rotating structure outside the heat exchanger shell. When the outer rotating structure rotates, the rotation can be transmitted to the inner rotating structure without contact to make it rotate, so that the cooling fluid in the heat exchanger shell can not only have an axial flow motion posture, but also produce radial motion, break the laminar flow, form turbulence, so that the lower temperature cooling fluid in the inner layer can be fully mixed with the higher temperature cooling fluid close to the inner side, and can replace more heat when contacting the heat exchange tube, thereby enhancing heat transfer. At the same time, the non-contact rotation transmission is suitable for being arranged in a small space inside the wound tube heat exchanger, and the structural design is more reasonable.
[0007] In a preferred implementation, the outer rotating structure includes an outer magnet, the inner rotating structure includes an inner magnet, the outer magnet and the inner magnet are arranged radially corresponding to each other, and the rotation of the outer magnet can drive the rotation of the inner magnet.
[0008] Based on the principle of magnetic coupling, when the external magnet rotates, its magnetic field will also change. This changing magnetic field will pass through the internal magnet and interact with the magnetic field in the internal magnet, causing the internal magnet to rotate with the external magnet, thereby achieving contactless rotation. This principle is applied in many mechanical devices and motors, such as magnetic transmission, magnetic resonance phenomenon, etc.
[0009] In a preferred implementation, the external magnet includes a plurality of arc-shaped rotating external magnetic blocks, and the internal magnet includes a plurality of arc-shaped rotating internal magnetic blocks. The plurality of rotating external magnetic blocks and rotating internal magnetic blocks are evenly arranged around the axis of the heat exchanger and correspond to each other.
[0010] In a preferred implementation, the rotating outer magnetic block is arranged inside the rotating outer shell, which is rotatably mounted on the outer wall of the heat exchanger shell, and the rotating inner magnetic block is arranged inside the rotating inner shell, which is rotatably mounted on the inner wall of the heat exchanger shell.
[0011] In a preferred implementation, a plurality of rotating inner shells are evenly arranged along the length direction of the heat exchanger shell, and the rotation of the rotating outer shell can drive the rotation of the plurality of rotating inner shells.
[0012] In a preferred implementation, the outer wall of the rotating shell is provided with a tooth portion, and the driving shaft of the driving motor is provided with driving teeth, and the driving teeth are meshed and connected with the tooth portion.
[0013] In a preferred implementation, the inner wall of the heat exchanger shell is provided with an annular convex portion, the annular convex portion is provided with an annular groove, and the rotating inner shell is provided with a sliding portion, which is cooperatively connected with the annular groove.
[0014] In a preferred implementation, a plurality of stirring blades are provided axially of the rotating inner shell, and the rotating inner shell rotates to push the stirring blades toward the center position of the cooling fluid close to the inner wall of the heat exchanger shell, so that the cooling fluid evenly contacts the heat exchange tubes.
[0015] In a preferred implementation, an angle θ is formed between the plane where the stirring blades are located and the axial direction of the heat exchanger, satisfying 0°≤θ≤90°.
[0016] The angle setting of the stirring blades can affect the shear force and tumbling effect of the fluid. Specifically, when the cooling liquid enters the shell from the shell inlet, it is stirred and tumbled by the stirring blades, increasing the fluid flow rate along the flow direction and then flows out from the shell outlet. This internal accelerated heat exchange can increase the average heat transfer effect and thus enhance the heat exchange.
[0017] In a preferred implementation, the rotating inner shell and the rotating outer shell are made of polytetrafluoroethylene. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present application and do not constitute an improper limitation on the present invention. In the drawings:
[0019] Figure 1 A schematic diagram of the internal structure of a schematic implementation of a wound tube heat exchanger for enhanced heat transfer of the present application is depicted;
[0020] Figure 2 This application is shown Figure 1 A schematic diagram of an enlarged structure of a schematic implementation method of part A;
[0021] Description of labels:
[0022] 10-heat exchanger shell; 100-shell inlet; 101-shell outlet; 102-tube inlet; 103-tube outlet; 11-spiral winding tube; 12-external rotating structure; 120-rotating outer magnetic block; 121-rotating outer shell; 13-internal rotating structure; 130-rotating inner magnetic block; 131-rotating inner shell; 1310-sliding part; 132-annular protrusion; 1320-annular groove; 133-stirring blade. DETAILED DESCRIPTION
[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0024] In the description of the present invention, it is necessary to understand that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the present invention, unless otherwise clearly specified and limited, a first feature being "upper" or "lower" than a second feature may be the first and second features directly contacting, or the first and second features indirectly contacting through an intermediate medium.
[0025] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.
[0026] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0027] The utility model is described below in conjunction with the accompanying drawings.
[0028] The specific plans adopted are:
[0029] like Figure 1-2 As shown, the utility model provides a wound tube heat exchanger with enhanced heat transfer, including a heat exchanger shell 10 and a multi-layer spiral winding tube 11 arranged in the heat exchanger shell 10, the heat exchanger shell 10 is provided with a shell side inlet 100, a shell side outlet 101, a tube side inlet 102 and a tube side outlet 103, the outer wall of the heat exchanger shell 10 is rotatably provided with an outer rotating structure 12, and the inner wall of the heat exchanger shell 10 is rotatably provided with an inner rotating structure 13, the outer rotating structure 12 and the inner rotating structure 13 can realize contactless transmission rotation, and when the inner rotating structure 13 rotates, the coolant moving axially in the heat exchanger shell 10 can generate radial motion, generate turbulence to enhance heat transfer.
[0030] The wound tube heat exchanger of the utility model is provided with an inner rotating structure 13 on the inner wall of the heat exchanger shell 10, and an outer rotating structure 12 is provided outside the heat exchanger shell 10. When the outer rotating structure 12 rotates, the rotation can be transmitted to the inner rotating structure 13 without contact to make it rotate, so that the cooling fluid in the heat exchanger shell 10 can not only have an axial flow motion posture, but also produce radial motion, break the laminar flow, form turbulence, so that the lower temperature cooling fluid in the inner layer can be fully mixed with the higher temperature cooling fluid close to the inner side, and can replace more heat when contacting the heat exchange tube, thereby enhancing heat transfer. At the same time, the non-contact rotation transmission is suitable for being arranged in the narrow space inside the wound tube heat exchanger, and the structural design is more reasonable.
[0031] As a preferred embodiment of the present application, the external rotating structure 12 includes an external magnet, and the internal rotating structure 13 includes an internal magnet. The external magnet and the internal magnet are arranged radially correspondingly, and the rotation of the external magnet can drive the rotation of the internal magnet. The reason why the rotation of the external magnet can drive the rotation of the internal magnet is based on the principle of magnetic coupling. When the external magnet rotates, its magnetic field will also change. This changing magnetic field will pass through the internal magnet and interact with the magnetic field in the internal magnet, causing the internal magnet to rotate with the external magnet. This principle is applied in many mechanical devices and motors, such as magnetic transmission, magnetic resonance phenomenon, etc.
[0032] Specifically, the outer magnet includes a plurality of arc-shaped rotating outer magnet blocks 120, and the inner magnet includes a plurality of arc-shaped rotating inner magnet blocks 130. The plurality of rotating outer magnet blocks 120 and the rotating inner magnet blocks 130 are evenly arranged around the axis of the heat exchanger and correspond to each other. Figure 1 As shown, three groups of corresponding internal and external rotating modules are provided, the polarities of the rotating outer magnetic block 120 and the rotating inner magnetic block 130 are opposite, the rotating outer magnetic block 120 is arranged inside the rotating outer shell 121, the rotating outer shell 121 is rotatably sleeved on the outer wall of the heat exchanger shell 10, the rotating inner magnetic block 130 is arranged inside the rotating inner shell 131, the rotating inner shell 131 is rotatably arranged on the inner wall of the heat exchanger shell 10, when the rotating outer shell 121 is driven to rotate, the internal rotating inner shell 131 can be driven to rotate, the rotating inner shell 131 and the rotating outer shell 121 are made of polytetrafluoroethylene, polytetrafluoroethylene has extremely low surface adhesion and high temperature resistance, can be used for a long time at high temperature without melting or decomposition, chemical corrosion resistance: suitable for application in the internal environment of the heat exchanger, and has an extremely low friction coefficient, compared with metal materials, lighter weight is conducive to driving rotation, those skilled in the art can understand that the rotating outer magnetic block 120 and the rotating inner magnetic block 130 can be installed inside the polytetrafluoroethylene by melting through a mold.
[0033] As a preferred embodiment of the present embodiment, a plurality of rotating inner shells 131 are evenly arranged along the length direction of the heat exchanger shell 10. Compared with the integral rotating inner shell 131, the plurality of rotating inner shells 131 with smaller sizes have a lighter weight. The rotation of the rotating outer shell 121 can drive the plurality of rotating inner shells 131 to rotate, thereby saving materials and reducing costs.
[0034] The specific implementation scheme of the rotation of the rotating housing 121 is shown in Figure 1 A rotating bearing is arranged on the outer wall of the heat exchanger shell 10, and the rotating shell 121 is sleeved on the bearing. A tooth portion is arranged on the outer wall of the rotating shell 121, and a driving shaft of the driving motor is provided with driving teeth. The driving teeth are meshed and connected with the tooth portion. When the driving motor rotates, the rotating shell 121 can rotate. The structure of the driving motor and the driving teeth is not shown in the diagram, and those skilled in the art can understand it.
[0035] For a specific implementation scheme of rotating the inner shell 131, see Figure 2 The inner wall of the heat exchanger shell 10 is provided with an annular convex portion 132, and the annular convex portion 132 is provided with an annular groove 1320. The rotating inner shell 131 is provided with a sliding portion 1310, and the sliding portion 1310 is matched and connected with the annular groove 1320. During actual installation, the annular convex portion 132 on the bottom side can be welded to the inner wall of the heat exchanger shell 10 first, and then the sliding portion 1310 on the bottom side of the rotating inner shell 131 is set in the annular groove 1320, and then the annular convex portion 132 on the upper side is welded to the inner wall of the heat exchanger shell 10, so that the sliding portion 1310 on the upper side of the rotating inner shell 131 is set in the annular groove 1320. A universal ball can be set in the annular groove 1320 or at the position of the sliding portion 1310. People skilled in the art can understand that the sliding portion 1310 can be slidably connected between the annular grooves 1320 to make its rotation better.
[0036] In order to better break the laminar flow state in the heat exchanger, in this embodiment, a plurality of stirring blades 133 are axially provided on the rotating inner shell 131. The rotating inner shell 131 rotates to push the stirring blades 133 toward the center position to push the cooling fluid close to the inner wall of the heat exchanger shell 10 so that the cooling fluid evenly contacts the heat exchange tubes.
[0037] For further information, see Figure 2 There is an angle θ between the stirring blade 133 and the axial direction of the heat exchanger, which satisfies 0°≤θ≤90°. The stirring blade can have a specific effect on the fluid at a certain angle. The angle of the stirring blade can affect the shear force and tumbling effect of the fluid. Specifically, when the cooling liquid enters the shell side from the shell side inlet 100, it is stirred and tumbled by the stirring blade, thereby increasing the flow rate of the fluid along the flow direction and then flows out from the shell side outlet 101. This internal accelerated heat exchange can increase the average heat transfer effect, thereby enhancing the heat exchange.
[0038] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.
[0039] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A wound tube heat exchanger with enhanced heat transfer, comprising a heat exchanger shell and a multi-layer spirally wound tube arranged in the heat exchanger shell, characterized in that: The outer wall of the heat exchanger shell is rotatably provided with an outer rotating structure, and the inner wall of the heat exchanger shell is rotatably provided with an inner rotating structure. The outer rotating structure and the inner rotating structure can realize contactless transmission rotation. When the inner rotating structure rotates, the coolant moving axially in the heat exchanger shell can produce radial movement, generate turbulence to enhance heat transfer.
2. The coiled tube heat exchanger with enhanced heat transfer according to claim 1, characterized in that: The outer rotating structure includes an outer magnet, and the inner rotating structure includes an inner magnet. The outer magnet and the inner magnet are arranged radially corresponding to each other, and the rotation of the outer magnet can drive the rotation of the inner magnet.
3. The coiled tube heat exchanger with enhanced heat transfer according to claim 2, characterized in that: The outer magnet comprises a plurality of arc-shaped rotating outer magnet blocks, and the inner magnet comprises a plurality of arc-shaped rotating inner magnet blocks. The plurality of rotating outer magnet blocks and rotating inner magnet blocks are evenly arranged around the axis of the heat exchanger and correspond to each other.
4. The coiled tube heat exchanger with enhanced heat transfer according to claim 3, characterized in that: The rotating outer magnetic block is arranged inside the rotating outer shell, and the rotating outer shell is rotatably sleeved on the outer wall of the heat exchanger shell. The rotating inner magnetic block is arranged inside the rotating inner shell, and the rotating inner shell is rotatably arranged on the inner wall of the heat exchanger shell.
5. The coiled tube heat exchanger with enhanced heat transfer according to claim 4, characterized in that: A plurality of rotating inner shells are evenly arranged along the length direction of the heat exchanger shell, and the rotation of the rotating outer shell can drive the rotation of the plurality of rotating inner shells.
6. The coiled tube heat exchanger with enhanced heat transfer according to claim 4, characterized in that: The outer wall of the rotating shell is provided with a tooth portion, and the driving shaft of the driving motor is provided with driving teeth, and the driving teeth are meshed and connected with the tooth portion.
7. The coiled tube heat exchanger with enhanced heat transfer according to claim 4, characterized in that: The inner wall of the heat exchanger shell is provided with an annular convex portion, the annular convex portion is provided with an annular groove, and the rotating inner shell is provided with a sliding portion, which is matched and connected with the annular groove.
8. The coiled tube heat exchanger with enhanced heat transfer according to claim 4, characterized in that: The rotating inner shell is provided with a plurality of stirring blades in the axial direction. The rotating inner shell rotates to push the stirring blades toward the center position the cooling fluid close to the inner wall of the heat exchanger shell, so that the cooling fluid contacts the heat exchange tubes evenly.
9. The coiled tube heat exchanger with enhanced heat transfer according to claim 8, characterized in that: There is an angle θ between the plane where the stirring blade is located and the axial direction of the heat exchanger, which satisfies 0°≤θ≤90°.
10. The coiled tube heat exchanger with enhanced heat transfer according to claim 4, characterized in that: The rotating inner shell and the rotating outer shell are made of polytetrafluoroethylene.