Turbulent flow heat exchange tube and heat exchanger

Abstract

The utility model belongs to the technical field of heat exchange equipment, and discloses a turbulent flow heat exchange tube and a heat exchanger, the turbulent flow heat exchange tube comprises a tube body and a spiral turbulent flow piece arranged in the tube body, the tube body is provided with a through-flow section and a reducing section, and the inner diameter of the reducing section is smaller than that of the through-flow section; when the turbulent flow heat exchange tube is produced, the spiral turbulent flow piece is arranged in the tube body in a penetrating mode, then the tube body is subjected to hole shrinkage treatment, then the hole shrinkage section is formed on the tube body, the inner wall of the hole shrinkage section abuts against the spiral turbulent flow piece, and therefore the inner wall of the hole shrinkage section abuts against the spiral turbulent flow piece to extrude and fix the spiral turbulent flow piece. According to the turbulent flow heat exchange tube, the spiral turbulent flow piece is fixed, so that the phenomenon that the spiral turbulent flow piece vibrates to impact the inner wall of the tube body when a medium flows in the tube body is avoided, and the noise of a heat exchanger provided with the turbulent flow heat exchange tube is reduced; and the phenomenon of mutual friction between the spiral spoiler and the pipe body is avoided, so that the effect of prolonging the service life of the pipe body is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of heat exchange equipment, specifically relating to a turbulent heat exchange tube and a heat exchanger. Background Technology

[0002] A heat exchanger is an energy-saving device that enables heat transfer between two or more fluids at different temperatures. It can transfer heat from a higher-temperature fluid to a lower-temperature fluid, allowing the fluid temperature to reach the specified parameters of the process and meet the requirements of the process conditions.

[0003] Heat exchange tubes are an important component of heat exchangers. To improve the heat transfer performance of heat exchange tubes, it is easy to think of installing turbulence-inducing elements in the heat exchange tubes. This allows the medium in the heat exchange tubes to change its flow pattern under the action of the turbulence-inducing elements, thereby enhancing the turbulence of the medium. This, to a certain extent, interferes with and disrupts the development of the medium boundary layer and weakens the heat transfer resistance, thus improving the heat transfer performance of the heat exchange tubes.

[0004] However, since the turbulence-disrupting elements are located inside the heat exchange tubes, it is difficult to fix them. As a result, most of the turbulence-disrupting elements are not fixed to the heat exchange tubes. Therefore, when the heat exchanger is running, the turbulence-disrupting elements will vibrate under the action of the medium flow, which increases the noise generated during the operation of the heat exchanger. At the same time, when the medium flows in the heat exchange tubes, the turbulence-disrupting elements will rotate relative to the heat exchange tubes under the action of the medium, which will cause friction between the turbulence-disrupting elements and the heat exchange tubes, thus affecting the service life of the heat exchange tubes. Utility Model Content

[0005] This application provides a turbulence-reducing heat exchange tube to reduce the difficulty of fixing turbulence-reducing components, reduce noise generated during heat exchanger operation, and improve the service life of the heat exchange tube.

[0006] The technical solution adopted in this application is as follows:

[0007] A turbulence heat exchange tube includes a tube body and a spiral turbulence element disposed inside the tube body. The tube body has a flow passage section and a reduced diameter section. The inner diameter of the reduced diameter section is smaller than the inner diameter of the flow passage section, so that the inner wall of the reduced diameter section abuts against the spiral turbulence element to compress and fix the spiral turbulence element.

[0008] By adopting the above technical solution, when manufacturing the turbulence heat exchanger tube of this application, the spiral turbulence element is first inserted into the tube body, and then the tube body is reduced in diameter, thereby forming a reduced-diameter section on the tube body. The inner wall of the reduced-diameter section is then pressed against the spiral turbulence element to fix it in place. This avoids the phenomenon of the spiral turbulence element vibrating and impacting the inner wall of the tube body when the medium flows within it, thus reducing the noise of the heat exchanger equipped with the turbulence heat exchanger tube of this application, providing a more comfortable working environment for staff, and improving the user experience. Furthermore, by reducing the diameter of the tube body, the… This invention achieves a fixed helical baffle to prevent relative rotation between the helical baffle and the tube body under the influence of medium flow, thereby avoiding mutual friction between the helical baffle and the tube body, reducing wear on the heat exchange tube, and extending the service life of the tube body. This, in turn, extends the service life of the heat exchanger equipped with the baffle heat exchange tube of this application, further improving the user experience. Simultaneously, the helical baffle is fixed by reducing the diameter of the tube body, thus reducing the difficulty of fixing the helical baffle, improving the production efficiency of the baffle heat exchange tube, and increasing the stability of the helical baffle.

[0009] Optionally, the reduced diameter section is located at the end of the tube body.

[0010] By adopting the above technical solution, since the reduced diameter section is located at the end of the tube body, the forming difficulty of the reduced diameter section is reduced, thereby improving the production efficiency of the turbulent heat exchange tube, and thus improving the production efficiency of the heat exchanger equipped with the turbulent heat exchange tube of this application and reducing the production cost of the heat exchanger.

[0011] Optionally, the reduced diameter section is provided in at least two sections, wherein the two reduced diameter sections are respectively located at two ends of the pipe body, and the flow passage section is located between the multiple reduced diameter sections.

[0012] By adopting the above technical solution, since the reduced diameter section is set with at least two sections, the number of fixed points for the spiral turbulence-inducing component is increased, thereby increasing the stability of the spiral turbulence-inducing component. This further avoids the phenomenon that the spiral turbulence-inducing component can rotate relative to the tube body, which would cause wear of the heat exchange tube, and thus further ensures the service life of the turbulence-inducing heat exchange tube.

[0013] Optionally, the flow passage section is provided with at least two sections, and the narrowing section is located between the multiple flow passage sections.

[0014] By adopting the above technical solution, since the flow passage is set in two sections and the reduced diameter section is located between the multiple flow passage sections, when connecting the turbulent heat exchange tube in this application to the tube sheet, the flow passage is connected to the tube sheet, so that the turbulent heat exchange tube can be fixedly connected to the tube sheet by expansion or welding, thereby improving the flexibility of the connection method between the turbulent heat exchange tube and the tube sheet; at the same time, it can also ensure the flow area at the end of the tube body, so that more medium can enter the interior of the tube body through the tube body opening, thereby ensuring the heat transfer performance of the turbulent heat exchange tube.

[0015] Optionally, the reduced diameter section has an outer end located close to the tube sheet, and the tube sheet has an inner side facing the middle position in the length direction of the heat exchanger. The distance L between the outer end and the inner side satisfies: L≥0.1mm.

[0016] By adopting the above technical solution, since L≥0.1mm, the reduced diameter section can avoid the tube sheet, thereby ensuring the connection area between the tube body and the tube sheet, increasing the connection stability between the turbulent heat exchange tube and the tube sheet, and thus increasing the service life of the heat exchanger with the turbulent heat exchange tube of this application installed.

[0017] Optionally, the length of the spiral deflector is less than the length of the tube body, so that a clearance space is formed between the end of the spiral deflector and the end of the tube body.

[0018] By adopting the above technical solution, since the length of the spiral baffle is less than the length of the tube body, the end of the spiral baffle can avoid the end of the tube body, so that the end of the two can form an avoidance space, so that the tube body can be fixedly connected to the tube sheet by expansion joint, thereby reducing the difficulty of fixing the tube body by expansion joint and improving the assembly efficiency of the heat exchanger.

[0019] Optionally, the spiral spoiler is formed by twisting a plate-like structure, the plate-like structure having a torsion axis about which it twists and a central axis passing through the middle position in the width direction of the plate-like structure, the torsion axis and the central axis being collinear;

[0020] Alternatively, the torsion axis may be arranged parallel to and spaced apart from the central axis.

[0021] By adopting the above technical solution, since the torsion axis and the central axis are set collinearly, the spiral turbulence element is formed by twisting the middle position of the plate structure in the width direction, thereby reducing the production difficulty of the spiral turbulence element and improving the production efficiency of the turbulence heat exchange tube. At the same time, both sides of the plate structure in the width direction can abut against the inner wall of the tube body, so that the interior of the tube body forms a spiral channel under the action of the spiral turbulence element, thus ensuring the heat transfer performance of the turbulence heat exchange tube.

[0022] Because the torsion axis and the central axis are spaced apart, after the plate structure is torn, the area farther from the central axis can contact the inner wall of the tube, while the area closer to the central axis cannot contact the inner wall of the tube. This causes the medium to flow to the area closer to the central axis, where part of the medium continues to flow along the torsion direction of the spiral turbulence element, while the remaining medium flows along the axial direction of the tube. This causes the medium flowing along the axial direction of the tube to impact the medium flowing spirally along the tube, thereby improving the turbulence effect of the medium in the tube and further improving the heat transfer performance of the turbulence heat exchange tube.

[0023] Optionally, the spiral spoiler is formed by twisting a first plate and a second plate that together form a V-shaped structure. The V-shaped structure has a torsion axis about which it twists and an intersection line located at the intersection of the first plate and the second plate. The torsion axis and the intersection line are collinear.

[0024] Alternatively, the torsion axis may be arranged parallel to and spaced apart from the intersection line.

[0025] By adopting the above technical solution, since the spiral turbulence element is formed by twisting a V-shaped structure and the twisting axis is collinear with the intersection line, two spiral channels are formed inside the tube under the action of the spiral turbulence element, thereby increasing the number of spiral channels and improving the turbulence effect of the medium inside the tube, thus further improving the heat transfer performance of the turbulence heat exchange tube. At the same time, since the V-shaped structure includes a first plate and a second plate, the contact points between the spiral turbulence element and the inner wall of the tube are also increased, thereby increasing the support points of the spiral turbulence element on the tube, thus increasing the structural strength of the turbulence heat exchange tube, and further increasing the service life of the turbulence heat exchange tube.

[0026] Because the torsion axis is parallel and spaced apart from the intersection line, after the V-shaped structure is torn, the area farther from the intersection line can contact the inner wall of the tube, while the area closer to the intersection line cannot contact the inner wall of the tube. This causes the medium to flow to the area closer to the intersection line, where part of the medium continues to flow along the torsion direction of the spiral turbulence element, while the remaining medium flows along the axial direction of the tube. This causes the medium flowing along the axial direction of the tube to impact the medium flowing spirally along the tube, thereby improving the turbulence effect of the medium in the tube and further improving the heat transfer performance of the turbulence heat exchange tube.

[0027] Optionally, the helical spoiler has a straight section and a torsion section, with the straight section located at the end of the torsion section.

[0028] By adopting the above technical solution, since the spiral turbulence component has a straight section and a twisted section, and the straight section is located at the end of the twisted section, the end of the spiral turbulence component does not need to be twisted, thereby reducing the production difficulty of the spiral turbulence component and improving the production efficiency of the turbulence heat exchange tube.

[0029] This application also discloses a heat exchanger that reduces the difficulty of fixing the spiral turbulence element, reduces the noise generated during the operation of the heat exchanger, and improves the service life of the heat exchange tube.

[0030] A heat exchanger includes a cylindrical body, a tube box disposed at the end of the cylindrical body, a tube sheet disposed between the cylindrical body and the tube box, and a turbulence heat exchange tube as described above, wherein the turbulence heat exchange tube is located inside the cylindrical body and the end of the turbulence heat exchange tube is welded or expanded to the tube sheet.

[0031] By adopting the above technical solution, since the heat exchanger in this application uses the aforementioned turbulence heat exchange tube, the difficulty of fixing the spiral turbulence component is reduced, the noise generated during the operation of the heat exchanger is reduced, and the phenomenon of mutual friction between the spiral turbulence component and the tube body is avoided during the operation of the heat exchanger, thereby avoiding the phenomenon of easy damage to the heat exchange tube and thus improving the service life of the heat exchanger.

[0032] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0033] 1. The turbulence heat exchanger tube of this application includes a tube body and a spiral turbulence element disposed inside the tube body. The tube body has an end section and a reduced diameter section located between the end sections. The inner diameter of the reduced diameter section is smaller than the inner diameter of the end section, so that the inner wall of the reduced diameter section presses against the spiral turbulence element to compress and fix the spiral turbulence element. This avoids the phenomenon that the spiral turbulence element vibrates and impacts the inner wall of the tube body when the medium flows in the tube body, thereby reducing the noise of the heat exchanger with the turbulence heat exchanger tube of this application installed. In addition, it avoids the phenomenon of mutual friction between the spiral turbulence element and the tube body, thereby reducing the wear of the heat exchanger tube and thus extending the service life of the tube body, thereby extending the service life of the heat exchanger with the turbulence heat exchanger tube of this application installed, and further improving the user experience. At the same time, the reduction of the diameter of the tube body realizes the fixation of the spiral turbulence element, thereby reducing the difficulty of fixing the spiral turbulence element, thereby improving the production efficiency of the turbulence heat exchanger tube and increasing the stability of the spiral turbulence element.

[0034] 2. The reduced diameter section in this application is located at the end of the tube body, thereby reducing the molding difficulty of the reduced diameter section, improving the production efficiency of the turbulent heat exchange tube, and further improving the production efficiency of the heat exchanger equipped with the turbulent heat exchange tube in this application and reducing the production cost of the heat exchanger.

[0035] 3. In this application, the reduced diameter section is provided in two sections, which are located at the two ends of the tube body respectively. The flow passage section is located between the multiple reduced diameter sections, which increases the number of fixed points for the spiral turbulence element, thereby increasing the stability of the spiral turbulence element. This further avoids the phenomenon that the spiral turbulence element can rotate relative to the tube body, causing wear of the heat exchange tube, and thus further ensures the service life of the turbulence heat exchange tube. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a schematic diagram of the structure of the turbulence heat exchanger tube described in one embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the structure of the tube body according to one embodiment of this application;

[0039] Figure 3 These are schematic diagrams of embodiments one and two of the spiral agitator described in this application.

[0040] Figure 4 These are schematic diagrams of embodiments three and four of the spiral deflector described in this application;

[0041] Figure 5 This is a partial structural diagram of the heat exchanger described in one embodiment of this application.

[0042] Figure label:

[0043] 1. Pipe body; 11. Pass-through section; 12. Reduced diameter section; 2. Spiral spoiler; 3. Tube sheet. Detailed Implementation

[0044] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0046] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0049] Reference Figures 1 to 4 This application discloses a turbulence heat exchange tube, which includes a tube body 1 and a spiral turbulence element 2 disposed inside the tube body 1. The tube body 1 has a flow passage section 11 and a diameter reduction section 12. The inner diameter of the diameter reduction section 12 is smaller than the inner diameter of the flow passage section 11, so that the inner wall of the diameter reduction section 12 presses against the spiral turbulence element 2 to compress and fix the spiral turbulence element 2.

[0050] When manufacturing the turbulence heat exchange tube of this application, the spiral turbulence element 2 is first inserted into the tube body 1, and then the tube body 1 is reduced in diameter, thereby forming a reduced diameter section 12 on the tube body 1. The inner wall of the reduced diameter section 12 is pressed against the spiral turbulence element 2 to fix the spiral turbulence element 2. This avoids the phenomenon that the spiral turbulence element 2 vibrates and impacts the inner wall of the tube body 1 when the medium flows in the tube body 1, thereby reducing the noise of the heat exchanger with the turbulence heat exchange tube of this application installed, providing a more comfortable working environment for the staff, and improving the user experience.

[0051] In addition, by reducing the diameter of the tube body 1, the spiral turbulence-inducing element 2 is fixed, thereby preventing the spiral turbulence-inducing element 2 from rotating relative to the tube body 1 under the action of the medium flow. This avoids the phenomenon of mutual friction between the spiral turbulence-inducing element 2 and the tube body 1, thereby reducing the wear of the tube body 1 and extending the service life of the tube body 1. This extends the service life of the heat exchanger with the turbulence-inducing heat exchange tube of this application, and further improves the user experience.

[0052] Meanwhile, by reducing the diameter of the tube body 1, the spiral turbulence-inducing component 2 is fixed, thereby reducing the difficulty of fixing the spiral turbulence-inducing component 2, and thus improving the production efficiency of the turbulence-inducing heat exchange tube and increasing the stability of the spiral turbulence-inducing component 2.

[0053] This application does not specifically limit the shape of the reduced diameter section 12. Preferably, the reduced diameter section 12 is a straight section with a constant diameter to reduce the manufacturing difficulty of the turbulence heat exchange tube. In other embodiments, the radial cross-section of the reduced diameter section 12 can also be V-shaped or W-shaped, that is, the diameter of the reduced diameter section 12 gradually decreases and then gradually increases along the axial direction of the tube body 1 to improve the fixing effect of the spiral turbulence member 2.

[0054] This application does not specify the formation method of the reduced diameter section 12. It can be formed by a tube shrinking machine to reduce the production difficulty of the turbulent heat exchange tube. It can also be formed by other equipment, as long as it can reduce the diameter of a part of the tube body 1 and press it against the spiral turbulent element 2.

[0055] This application does not specifically limit the positional relationship between the narrowing section 12 and the flow passage section 11, and it can adopt any of the following embodiments:

[0056] In the first embodiment, the reduced diameter section 12 is located at the end of the tube body 1, thereby reducing the molding difficulty of the reduced diameter section 12, improving the production efficiency of the turbulent heat exchange tube, and thus improving the production efficiency of the heat exchanger equipped with the turbulent heat exchange tube of this application and reducing the production cost of the heat exchanger.

[0057] In this embodiment, the number of reduced diameter sections 12 is not specifically limited. Preferably, at least two reduced diameter sections 12 are provided, with the two reduced diameter sections 12 located at the two ends of the tube body 1 respectively. The flow passage section 11 is located between the multiple reduced diameter sections 12, thereby increasing the number of fixed points for the spiral turbulence-inducing element 2, thereby increasing the stability of the spiral turbulence-inducing element 2, so as to further avoid the phenomenon that the spiral turbulence-inducing element 2 may rotate relative to the tube body 1 and cause wear of the tube body 1, and thus further ensure the service life of the turbulence heat exchange tube.

[0058] It is understandable that the turbulence heat exchange tube is connected to the tube sheet 3 through the reduced diameter section 12, and the reduced diameter section 12 is fixedly connected to the tube sheet 3 by welding.

[0059] Preferably, the reduced diameter section 12 is provided with three sections, two of which are located at the two ends of the pipe body 1, and the remaining reduced diameter section 12 is located in the middle of the length direction of the pipe body 1, so as to further improve the fixing effect of the spiral turbulence 2. That is to say, in this scheme, the flow passage section 11 is provided with two sections, one of which is located between two adjacent reduced diameter sections 12, and the other is located between two other adjacent reduced diameter sections 12.

[0060] In other embodiments, both the reduced diameter section 12 and the flow passage section 11 may each have only one section. That is, one end of the tube body 1 is fixedly connected to the tube sheet 1 through the reduced diameter section 12, and the other end of the tube body 1 is fixedly connected to the tube sheet 1 through the flow passage section 11. This achieves the fixation of the spiral turbulence-inducing element 2 while reducing the production cost of the turbulence-inducing heat exchange tube. Alternatively, the reduced diameter section 12 may have two or more than three sections.

[0061] Implementation Method Two: In this implementation method, refer to... Figure 1 and Figure 2 The flow passage 11 has at least two sections, and the narrowing section 12 is located between the multiple flow passage sections 11.

[0062] It is understood that the two flow passages 11 are located at the two ends of the tube body 1 respectively. When the turbulence heat exchange tube in this application is connected to the tube sheet 3, the flow passage 11 is connected to the tube sheet 3 so that the turbulence heat exchange tube can be fixedly connected to the tube sheet 3 by means of expansion or welding, so as to improve the flexibility of the connection method between the turbulence heat exchange tube and the tube sheet 3. At the same time, it can also ensure the flow area at the end of the tube body 1 so that more medium can enter the interior of the tube body 1 through the tube opening of the tube body 1, so as to ensure the heat transfer performance of the turbulence heat exchange tube.

[0063] The better one is to refer to Figure 1 and Figure 2 The flow passage 11 is provided with three sections, and the diameter reduction section 12 is provided with two sections. One diameter reduction section 12 is located between two adjacent flow passage sections 11, and the other diameter reduction section 12 is located between two other adjacent flow passage sections 11, so as to increase the number of fixed points for the spiral turbulence member 2 and increase the stability of the spiral turbulence member 2.

[0064] Of course, in other embodiments, the flow passage 11 may also be provided with two or more than three sections.

[0065] Furthermore, the reduced diameter section 12 has an outer end located close to the tube sheet 3, and the tube sheet has an inner side facing the middle position in the length direction of the heat exchanger. The distance L between the outer end and the inner side satisfies: L≥0.1mm, thereby enabling the reduced diameter section 12 to avoid contact with the tube sheet 3, so as to ensure the connection area between the tube body 1 and the tube sheet 3, thereby increasing the connection stability between the turbulent heat exchange tube and the tube sheet 3, and thus increasing the service life of the heat exchanger installed with the turbulent heat exchange tube of this application.

[0066] In this embodiment, the length of the spiral deflector 2 is less than the length of the tube body 1, so that a clearance space is formed between the end of the spiral deflector 2 and the end of the tube body 1.

[0067] It is understood that one end of the spiral baffle 2 is correspondingly set to one end of the tube body 1, and the other end of the spiral baffle 2 is correspondingly set to the other end of the tube body 1. Furthermore, there is a set distance between the end of the spiral baffle 2 and the corresponding end of the tube body 1, thereby creating a clearance space between the end of the spiral baffle 2 and the end of the tube body 1 to accommodate the expansion joint device. This reduces the difficulty of fixing the tube body 1 using the expansion joint method, thereby improving the assembly efficiency of the heat exchanger.

[0068] Of course, in a heat exchanger where the turbulence heat exchange tube is fixed by welding, the length of the spiral turbulence element 2 can also be set to be equal to the length of the tube body 1.

[0069] This application does not specifically limit the formation method of the spiral spoiler 2, which can be any of the following embodiments:

[0070] Implementation Method 1, in this implementation method, refer to Figure 3 The spiral spoiler 2 is formed by twisting a plate-like structure. The plate-like structure has a torsion axis around which it twists and a central axis passing through the middle position in the width direction of the plate-like structure. The torsion axis and the central axis are arranged collinearly.

[0071] Because the torsion axis is collinear with the central axis, the spiral turbulence element 2 is formed by twisting the middle position of the plate structure in the width direction, which reduces the production difficulty of the spiral turbulence element 2 and improves the production efficiency of the turbulence heat exchange tube. At the same time, both sides of the plate structure in the width direction can abut against the inner wall of the tube body 1, so that the interior of the tube body 1 forms a spiral channel under the action of the spiral turbulence element 2, so as to ensure the heat transfer performance of the turbulence heat exchange tube.

[0072] Implementation Method Two: In this implementation method, refer to... Figure 3 The spiral spoiler 2 is formed by twisting a plate. The plate structure has a torsion axis around which it twists and a central axis passing through the middle position in the width direction of the plate structure. The torsion axis and the central axis are arranged parallel to each other at intervals.

[0073] It is understandable that the spiral spoiler 2 is formed by the eccentric torsion of a plate-like structure.

[0074] Because the torsion axis and the central axis are spaced apart, after the plate structure is torn, the area farther from the central axis can contact the inner wall of the tube 1, while the area closer to the central axis cannot contact the inner wall of the tube 1. As a result, when the medium flows to the area closer to the central axis, part of the medium continues to flow along the torsion direction of the spiral turbulence element 2, while the remaining medium flows along the axial direction of the tube 1. This causes the medium flowing along the axial direction of the tube 1 to impact the medium flowing spirally along the tube 1, thereby improving the turbulence effect of the medium in the tube 1 and further improving the heat transfer performance of the turbulence heat exchange tube.

[0075] In this embodiment, the relationship between the torsion axis and the plate-like structure is not specifically limited. It can be that the torsion axis is located on the plate-like structure, or it can be that the torsion axis is located outside the plate-like structure.

[0076] Implementation Method 3: In this implementation method, refer to... Figure 4 The spiral spoiler 2 is formed by twisting a first plate and a second plate that together form a V-shaped structure. The V-shaped structure has a torsion axis around which it twists and a junction line located at the intersection of the first plate and the second plate. The torsion axis and the junction line are arranged collinearly.

[0077] It is understandable that the first plate and the second plate are fixedly connected and form an angle between them. The angle can be an angle steel with an angle of 90°, or it can be a structure with other degrees, such as 30°, 45°, 60°, etc. The first plate and the second plate form an outer angle and an inner angle at the connection point, and the intersection line refers to the line that passes through the midpoint of the line connecting the outer angle and the inner angle.

[0078] Since the spiral turbulence-inducing element 2 is formed by twisting a V-shaped structure, and the twisting axis is collinear with the intersection line, two spiral channels are formed inside the tube body 1 under the action of the spiral turbulence-inducing element 2, thereby increasing the number of spiral channels and improving the turbulence effect of the medium inside the tube body 1, thus further improving the heat transfer performance of the turbulence-inducing heat exchange tube. At the same time, since the V-shaped structure includes a first plate and a second plate, the contact points between the spiral turbulence-inducing element 2 and the inner wall of the tube body 1 are also increased, thereby increasing the support points of the spiral turbulence-inducing element 2 on the tube body 1, thereby increasing the structural strength of the turbulence-inducing heat exchange tube, and further increasing the service life of the turbulence-inducing heat exchange tube.

[0079] Implementation Method Four: In this implementation method, refer to... Figure 4 The spiral spoiler 2 is formed by twisting a first plate and a second plate that together form a V-shaped structure. The V-shaped structure has a torsion axis around which it twists and a junction line located at the intersection of the first plate and the second plate. The torsion axis and the junction line are arranged parallel to each other at intervals.

[0080] It is understandable that the spiral spoiler 2 is formed by the eccentric torsion of the V-shaped structure.

[0081] Because the torsion axis is parallel and spaced apart from the intersection line, after the V-shaped structure is torn, the area farther from the intersection line can contact the inner wall of the tube 1, while the area closer to the intersection line cannot contact the inner wall of the tube 1. As a result, when the medium flows to the area closer to the intersection line, some of the medium continues to flow along the torsion direction of the spiral turbulence element 2, while the remaining medium flows along the axial direction of the tube 1. This causes the medium flowing along the axial direction of the tube 1 to impact the medium flowing spirally along the tube 1, thereby improving the turbulence effect of the medium in the tube 1 and further improving the heat transfer performance of the turbulence heat exchange tube.

[0082] In this embodiment, the relationship between the torsion axis and the V-shaped structure is not specifically limited. It can be that the torsion axis is located on the V-shaped structure, or it can be that the torsion axis is located inside the V-shaped structure.

[0083] Of course, in other embodiments, the spiral spoiler 2 can also be formed by twisting a structure with a cross-section of other shapes, such as W-shaped, C-shaped, etc.

[0084] In a preferred embodiment, the spiral turbulence-disrupting element 2 has a straight section and a twisted section, with the straight section located at the end of the twisted section. This eliminates the need for twisting at the end of the spiral turbulence-disrupting element 2, thereby reducing the manufacturing difficulty of the spiral turbulence-disrupting element 2 and improving the manufacturing efficiency of the turbulence-disrupting heat exchange tube.

[0085] This application does not specify the number of straight sections. It may have one section, meaning that one end of the spiral deflector 2 is not twisted; or it may have two sections, meaning that neither end of the spiral deflector 2 is twisted.

[0086] Of course, in another preferred approach, the straight section design can be omitted. That is, the spiral turbulence element 2 is twisted from one end to the other to ensure the turbulence effect on the medium.

[0087] This application does not specify the torsion method of the spiral spoiler 2. It can be that the spiral spoiler 2 is torsion processed outside the tube body 1 before being installed inside the tube body 1. Alternatively, other structures such as plate structures and V-shaped structures that are torsionized to form the spiral spoiler 2 can be placed inside the tube body 1 first, and then torsion processed inside the tube body 1.

[0088] Reference Figure 5This application also discloses a heat exchanger, which includes a cylinder, a tube box disposed at the end of the cylinder, a tube sheet 3 disposed between the cylinder and the tube box, and the aforementioned turbulence heat exchange tube, wherein the turbulence heat exchange tube is located inside the cylinder and the end of the turbulence heat exchange tube is welded or expanded to the tube sheet 3.

[0089] Because the heat exchanger in this application uses the aforementioned turbulence heat exchange tube, the difficulty of fixing the spiral turbulence element 2 is reduced, the noise generated during the operation of the heat exchanger is reduced, and the phenomenon of mutual friction between the spiral turbulence element 2 and the tube body 1 during the operation of the heat exchanger is avoided, thereby avoiding the phenomenon that the heat exchange tube is easily damaged, and thus improving the service life of the heat exchanger.

[0090] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0091] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0092] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A turbulence-induced heat exchange tube, characterized in that, The device includes a tube body (1) and a spiral baffle (2) disposed inside the tube body (1). The tube body (1) has a flow passage section (11) and a reduced diameter section (12). The inner diameter of the reduced diameter section (12) is smaller than the inner diameter of the flow passage section (11) so that the inner wall of the reduced diameter section (12) abuts against the spiral baffle (2) to compress and fix the spiral baffle (2).

2. The turbulence heat exchanger tube according to claim 1, characterized in that, The reduced diameter section (12) is located at the end of the tube body (1).

3. The turbulence heat exchanger tube according to claim 2, characterized in that, The reduced diameter section (12) is provided in at least two sections, wherein the two sections of the reduced diameter section (12) are respectively located at the two ends of the pipe body (1), and the flow passage section (11) is located between the multiple sections of the reduced diameter section (12).

4. The turbulence heat exchanger tube according to claim 1, characterized in that, The flow passage (11) is provided with at least two sections, and the narrowing section (12) is located between multiple flow passages (11).

5. A turbulence-generating heat exchanger tube according to claim 4, characterized in that, The reduced diameter section (12) has an outer end located near the tube sheet (3), and the tube sheet (3) has an inner side located towards the middle position in the length direction of the heat exchanger. The distance L between the outer end and the inner side satisfies: L≥0.1mm.

6. The turbulence heat exchanger tube according to claim 1, characterized in that, The length of the spiral deflector (2) is less than the length of the tube body (1) so that a clearance space is formed between the end of the spiral deflector (2) and the end of the tube body (1).

7. A turbulence heat exchanger tube according to any one of claims 1-6, characterized in that, The spiral spoiler (2) is formed by twisting a plate-like structure. The plate-like structure has a torsion axis about which it twists and a central axis passing through the middle position in the width direction of the plate-like structure. The torsion axis and the central axis are arranged collinearly. Alternatively, the torsion axis may be arranged parallel to and spaced apart from the central axis.

8. A turbulence heat exchanger tube according to any one of claims 1-6, characterized in that, The spiral spoiler (2) is formed by twisting a first plate and a second plate that together form a V-shaped structure. The V-shaped structure has a torsion axis about which it twists and a junction line located at the intersection of the first plate and the second plate. The torsion axis and the junction line are arranged collinearly. Alternatively, the torsion axis may be arranged parallel to and spaced apart from the intersection line.

9. A turbulence-generating heat exchanger tube according to any one of claims 1-6, characterized in that, The spiral spoiler (2) has a straight section and a twisted section, with the straight section located at the end of the twisted section.

10. A heat exchanger, characterized in that, It includes a cylindrical body, a tube box disposed at the end of the cylindrical body, a tube sheet (3) disposed between the cylindrical body and the tube box, and a turbulent heat exchange tube as described in any one of claims 1-9, wherein the turbulent heat exchange tube is located inside the cylindrical body and the end of the turbulent heat exchange tube is welded or expanded to the tube sheet (3).

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