Staggered winding type heater

Abstract

The utility model discloses a staggered winding type heater. The technical problem that an existing heater is complex in structure is solved. The device comprises an inner side support and a first staggered winding pipe set. The first staggered winding pipe set comprises a plurality of first arc-shaped pipes, a plurality of second arc-shaped pipes and a plurality of first connecting pipes. The first arc-shaped pipe and the second arc-shaped pipe are arranged in different planes. The first ends of the first arc-shaped pipes are communicated with the first ends of the second arc-shaped pipes through the first connecting pipes, the second ends of the first arc-shaped pipes are communicated with the second ends of the other second arc-shaped pipes through the first connecting pipes, and the first arc-shaped pipes and the second arc-shaped pipes are sequentially communicated and wound outside the inner side supporting frame. The bending radius of the first arc-shaped pipe is larger than that of the second arc-shaped pipe. According to the staggered winding type heater, the manufacturing requirements of complex parts are reduced, and the production cost and the production difficulty are reduced. And the first arc-shaped pipe and the second arc-shaped pipe are arranged on different surfaces and are wound outside the inner side supporting frame, so that the heater is compact in overall structure, and limited space can be fully utilized.

Description

Technical Field

[0001] This application belongs to the field of heater technology, specifically relating to a staggered-winding heater. Background Technology

[0002] Heaters are widely used in petrochemical, pharmaceutical, and light industries. They are installed inside storage tanks and containers to exchange heat with the internal media.

[0003] However, existing heaters have many drawbacks. Conventional shell-and-tube heat exchangers have complex structures and usually need to be manufactured in specialized factories, making on-site fabrication difficult; on-site fabricated heaters have non-compact structures and low space utilization; and the heater connection structure is complex, which is not conducive to on-site welding operations. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application discloses a staggered winding heater.

[0005] The technical solution adopted to achieve the purpose of this application is as follows: This utility model discloses a staggered-winding heater, comprising:

[0006] Inner support frame; and

[0007] The first staggered tube assembly includes multiple first arc-shaped tubes, multiple second arc-shaped tubes, and multiple first connecting tubes. The first arc-shaped tubes and the second arc-shaped tubes are arranged on opposite sides. The first end of the first arc-shaped tube is connected to the first end of the second arc-shaped tube through the first connecting tube. The second end of the first arc-shaped tube is connected to the second end of another second arc-shaped tube through the first connecting tube. Each first arc-shaped tube and each second arc-shaped tube are sequentially connected and wound around the outside of the inner support frame. The bending radius of the first arc-shaped tube is greater than the bending radius of the second arc-shaped tube.

[0008] In some implementations, it also includes:

[0009] A hanger, installed on the inner support frame, wherein the support portion of the hanger is located outside the first staggered tube assembly; and

[0010] The second staggered tube assembly includes multiple third arc-shaped tubes, multiple fourth arc-shaped tubes, and multiple second connecting tubes. The third arc-shaped tubes and the fourth arc-shaped tubes are arranged on opposite sides. The first end of the third arc-shaped tube is connected to the first end of the fourth arc-shaped tube through the first connecting tube. The second end of the third arc-shaped tube is connected to the second end of another fourth arc-shaped tube through the first connecting tube. Each third arc-shaped tube and each fourth arc-shaped tube are connected in sequence and wound around the outside of the hanger. The third arc-shaped tube at the end is connected to the first arc-shaped tube at the end through the second arc-shaped tube.

[0011] In some embodiments, the bending radius of the fourth arc-shaped tube is greater than that of the third arc-shaped tube.

[0012] In some embodiments, the bending radius of the third arc-shaped tube is equal to that of the first arc-shaped tube.

[0013] In some embodiments, the length of the second connecting pipe is greater than the length of the first connecting pipe.

[0014] In some embodiments, the winding direction of the second staggered tube group is the same as that of the first staggered tube group.

[0015] In some embodiments, an inlet pipe and an outlet pipe are also included, the inlet pipe being connected to the first arc-shaped pipe at one end, and the outlet pipe being connected to the third arc-shaped pipe at the other end.

[0016] In some embodiments, the first staggered tube group is configured as two groups, and the two groups of the first staggered tube group are symmetrically arranged along the inner support frame.

[0017] In some embodiments, the second staggered tube group is configured as two groups, and the two groups of the second staggered tube group are symmetrically arranged along the bracket.

[0018] In some embodiments, the bending radius of the second arc-shaped tube is greater than or equal to twice the diameter of the second arc-shaped tube.

[0019] As can be seen from the above technical solution, the staggered-winding heater disclosed in this application includes an inner support and a first staggered-winding tube group. The first staggered-winding tube group includes multiple first arc-shaped tubes, multiple second arc-shaped tubes, and multiple first connecting tubes. The first arc-shaped tubes and the second arc-shaped tubes are arranged on opposite sides. The first end of the first arc-shaped tube is connected to the first end of the second arc-shaped tube through the first connecting tube, and the second end of the first arc-shaped tube is connected to the second end of another second arc-shaped tube through the first connecting tube. Each first arc-shaped tube and each second arc-shaped tube are sequentially connected and wound around the outer side of the inner support frame. The bending radius of the first arc-shaped tube is larger than the bending radius of the second arc-shaped tube.

[0020] The staggered-winding heater disclosed in this application has a high degree of modularity, facilitating standardized production and on-site assembly. This design reduces the manufacturing requirements of complex components, lowering production costs and complexity. The first and second arc-shaped tubes are arranged opposite sides and wound around the inner support frame, resulting in a compact overall heater structure that fully utilizes the limited space within the tank or container. Compared to traditional shell-and-tube heat exchangers, the staggered-winding design reduces unnecessary space waste, allowing the heater to provide a larger heat exchange area within the same volume. Connecting the first and second arc-shaped tubes via a first connecting pipe reduces the number of weld joints, lowering welding difficulty and the risk of welding defects. Attached Figure Description

[0021] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Figure 1 This is a schematic diagram of a staggered heater in one or more embodiments of this application;

[0023] Figure 2 for Figure 1 A schematic diagram showing the connection between the first staggered winding tube group and the inner support frame;

[0024] Figure 3 for Figure 1 Schematic diagram of the connection between the second staggered winding tube group and the hanger;

[0025] Figure 4 for Figure 1 Schematic diagram of the first mis-wound tube group;

[0026] Figure 5 for Figure 4 Cross-sectional schematic diagram of the first mis-wound tube group;

[0027] Figure 6 This is a schematic diagram illustrating the use of the staggered heater in one or more embodiments of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Inner support frame; 200. First staggered tube group; 210. First arc-shaped tube; 220. Second arc-shaped tube; 230. First connecting tube; 300. Hanger; 400. Second staggered tube group; 500. Water inlet pipe; 600. Water outlet pipe. Detailed Implementation

[0030] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] This utility model discloses a staggered-winding heater, which can solve the technical problem of complex structure of existing heaters, thereby realizing online replacement without hot work. By adjusting the number of heaters, the heating area can be precisely controlled.

[0034] The technical solution of this application will be described in detail below through specific embodiments:

[0035] See Figure 1 , Figure 2 , Figure 4 and Figure 5 In a first aspect embodiment of this application, a staggered-winding heater is disclosed, comprising an inner support and a first staggered-winding tube group 200. The first staggered-winding tube group 200 includes multiple first arc-shaped tubes 210, multiple second arc-shaped tubes 220, and multiple first connecting tubes 230. The first arc-shaped tubes 210 and the second arc-shaped tubes 220 are arranged opposite to each other. The first end of the first arc-shaped tube 210 is connected to the first end of the second arc-shaped tube 220 through the first connecting tube 230, and the second end of the first arc-shaped tube 210 is connected to the second end of another second arc-shaped tube 220 through the first connecting tube 230. Each first arc-shaped tube 210 and each second arc-shaped tube 220 are sequentially connected and wound around the outer side of the inner support frame 100. The bending radius of the first arc-shaped tube 210 is larger than the bending radius of the second arc-shaped tube 220.

[0036] The staggered-winding heater disclosed in this embodiment has a high degree of modularity, facilitating standardized production and on-site assembly. This design reduces the manufacturing requirements of complex components, lowering production costs and complexity. The first arc-shaped tube 210 and the second arc-shaped tube 220 are arranged opposite to each other and wound around the inner support frame 100, resulting in a compact overall heater structure that fully utilizes the limited space within the storage tank or container. Compared to traditional shell-and-tube heat exchangers, the staggered-winding design reduces unnecessary space waste, allowing the heater to provide a larger heat exchange area within the same volume. Connecting the first arc-shaped tube 210 and the second arc-shaped tube 220 via the first connecting pipe 230 reduces the number of weld joints, lowering welding difficulty and the risk of welding defects.

[0037] In one embodiment, the first arc-shaped tube 210 and the second arc-shaped tube 220 can be connected by only one first connecting tube 230, or by two or more first connecting tubes 230. When the first arc-shaped tube 210 and the second arc-shaped tube 220 are connected by two first connecting tubes 230, the two first connecting tubes 230 can be connected to the first arc-shaped tube 210 and the second arc-shaped tube 220 respectively to form two U-shaped tubes.

[0038] When the first connecting pipe 230 forms a U-shape with the first arc-shaped pipe 210 or the second arc-shaped pipe 220, each U-shape can be integrally formed and then welded together. However, when the first arc-shaped pipe 210 and the second arc-shaped pipe 220 are connected by only one connecting pipe, the first arc-shaped pipe 210, the second arc-shaped pipe 220, and the first connecting pipe 230 can be processed separately and then welded together.

[0039] See Figure 1 and Figure 3 In one embodiment, the staggered-winding heater further includes a hanger 300 and a second staggered-winding tube group 400. The hanger 300 is mounted on the inner support frame 100, and the support portion of the hanger 300 is located outside the first staggered-winding tube group 200. The second staggered-winding tube group 400 includes multiple third arc-shaped tubes, multiple fourth arc-shaped tubes, and multiple second connecting tubes, with the third and fourth arc-shaped tubes arranged on opposite sides. The first end of the third arc-shaped tube is connected to the first end of the fourth arc-shaped tube through a first connecting tube 230, and the second end of the third arc-shaped tube is connected to the second end of another fourth arc-shaped tube through a first connecting tube 230. Each third arc-shaped tube and each fourth arc-shaped tube are sequentially connected and wound around the hanger 300. The third arc-shaped tube located at the end is connected to the first arc-shaped tube 210 located at the end through a second arc-shaped tube 220.

[0040] The first staggered tube assembly 200 and the second staggered tube assembly 400 are respectively wound around the inner support frame 100 and the hanger 300, forming a double-layer three-dimensional heat exchange structure. This design significantly increases the heat exchange area, allowing the fluid to exchange heat more fully with the heating medium in the storage tank or container, thereby improving the overall heat exchange efficiency.

[0041] The second staggered tube group 400 is connected to the first staggered tube group 200 through the second arc-shaped tube 220, forming a continuous fluid channel. This design allows the fluid to pass through the first staggered tube group 200 and the second staggered tube group 400 in sequence when flowing inside the heater, extending the residence time of the fluid in the heater and further enhancing the heat exchange effect.

[0042] The bracket 300 is mounted on the inner support frame 100, providing a stable support structure for the second staggered tube assembly 400. This design allows the second staggered tube assembly 400 to maintain a stable shape during operation, making it less prone to deformation or damage, thereby improving the overall stability of the heater. The double-layer staggered tube assembly design allows the stress to be more evenly distributed on the two tube assemblies when the heater is subjected to internal pressure or external impact, reducing the stress level borne by a single tube assembly and improving the heater's fatigue resistance and durability.

[0043] In one embodiment, the bending radius of the fourth arc-shaped tube is greater than that of the third arc-shaped tube.

[0044] The larger bending radius of the fourth arc-shaped tube extends the residence time of the fluid inside the tube and creates a more complex flow path. This design significantly enhances the turbulence of the fluid, helps to disrupt the fluid boundary layer, improves the heat transfer coefficient, and thus increases heat exchange efficiency.

[0045] By rationally designing the difference in bending radii between the third and fourth arc-shaped tubes, the flow path of fluid in the double-layer staggered tube assembly can be optimized, unnecessary flow resistance can be reduced, and fluid flow can be made smoother.

[0046] The larger bending radius of the fourth arc-shaped tube allows it to cover a larger space when wound around the hanger 300, while the smaller bending radius of the third arc-shaped tube ensures a close arrangement between the tubes. This design enables the double-layer staggered tube assembly to achieve a higher heat exchange area within a limited space, improving space utilization.

[0047] In one embodiment, the bending radius of the third arc-shaped tube is equal to the bending radius of the first arc-shaped tube 210.

[0048] The first arc-shaped tube 210 or the third arc-shaped tube and the fourth arc-shaped tube form a stepped bending radius combination. When the fluid passes through the first arc-shaped tube 210 or the third arc-shaped tube, it forms basic turbulence. After entering the fourth arc-shaped tube, secondary turbulence is triggered due to the expansion of the flow channel. This graded turbulence structure significantly improves the heat transfer coefficient.

[0049] In one embodiment, the length of the second connecting pipe is greater than the length of the first connecting pipe 230. The increased length of the second connecting pipe provides greater adjustment space for installation, allowing the double-layer staggered pipe assembly to adapt more flexibly to different spatial layouts and installation requirements during installation, and avoiding collisions between the second staggered pipe assembly 400 and the first staggered pipe assembly 200.

[0050] The longer second connecting pipe helps to create a more uniform distribution of fluid within the double-walled tube assembly, reducing localized overheating or undercooling caused by poor flow. This design results in a more uniform heat exchange process and improves the overall heat exchange efficiency.

[0051] In one embodiment, the winding direction of the second staggered winding tube group 400 is the same as the winding direction of the first staggered winding tube group 200.

[0052] When two layers of staggered pipe assemblies are wound in the same direction, the flow field characteristics (such as turbulence intensity and velocity distribution) formed by the fluid after passing through the first layer of pipe assemblies can be effectively continued by the second layer of pipe assemblies. This flow field consistency enables more efficient energy transfer between the two layers of pipe assemblies and reduces energy loss caused by abrupt changes in the flow field.

[0053] When double-layered tube assemblies are wound in the same direction, their thermal expansion stress and mechanical vibration stress are symmetrically distributed within the structure. This stress distribution pattern reduces local stress concentration in the tube assemblies, thereby improving the overall structural stability.

[0054] See Figure 1 and Figure 6 In one embodiment, the staggered heater further includes an inlet pipe 500 and an outlet pipe 600, the inlet pipe 500 being connected to a first arc-shaped pipe 210 located at one end, and the outlet pipe 600 being connected to a third arc-shaped pipe located at the other end.

[0055] The inlet pipe 500 is connected to the first arc-shaped pipe 210, allowing the cold fluid to directly enter the core heat exchange area of ​​the double-layer staggered pipe group. Combined with the connection design between the third arc-shaped pipe and the outlet pipe 600, a "spiral propulsion-counterflow heat exchange" flow field mode is formed.

[0056] In one embodiment, the first staggered tube group 200 is configured as two groups, and the two groups of the first staggered tube group 200 are symmetrically arranged along the inner support frame 100.

[0057] Two sets of symmetrically arranged first staggered tube groups 200 form a "double helix" flow field structure, which generates strong turbulence when the fluid passes through the first layer. Combined with the counter-current heat exchange of the subsequent tube groups, the heat exchange efficiency is effectively improved.

[0058] The symmetrical layout allows for pressure gradient compensation between the two sets of pipes, preventing pipe deformation caused by excessive local pressure.

[0059] In one embodiment, the second staggered tube group 400 is configured as two groups, and the two groups of second staggered tube groups 400 are symmetrically arranged along the hanger 300.

[0060] Two sets of symmetrically arranged second staggered tube groups 400 form a "double helix" flow field structure, which generates strong turbulence when the fluid passes through the first layer. Combined with the counter-current heat exchange of the subsequent tube groups, the heat exchange efficiency is effectively improved.

[0061] In one embodiment, the bending radius of the second arc-shaped tube 220 is greater than or equal to twice the diameter of the second arc-shaped tube 220. A large bending radius typically prevents excessive material flow deflection within the tube, thus avoiding material impacting the turning radius. A large bending radius also reduces the need for thinning during processing, improving the safety of the heating tube.

[0062] Through the above embodiments, this application has the following beneficial effects or advantages: The staggered-winding heater disclosed in this application adopts a staggered-winding structure, in which multiple first arc-shaped tubes 210 and multiple second arc-shaped tubes 220 are sequentially connected through a first connecting tube 230 and wound around the inner support frame 100. The structure is relatively simple, does not require complex manufacturing processes and equipment, and can be fabricated and installed on-site, reducing manufacturing difficulty and cost. The staggered-winding structure makes the overall structure of the heater more compact, effectively utilizing the space inside the storage tank or container and improving space utilization. The connection structure in this utility model is relatively simple, using a first connecting tube 230 and a second connecting tube to connect the first arc-shaped tubes 210 and 220, as well as the third and fourth arc-shaped tubes, reducing the number of welding joints, reducing welding difficulty and safety hazards, and improving the safety and reliability of the heater. By setting two sets of staggered-winding tube groups and rationally designing the bending radius of the first arc-shaped tubes 210 and 220 and the length of the first connecting tubes 230 and the second connecting tubes, the medium inside the heater can flow and exchange heat fully, improving the heat exchange effect. The first staggered tube group 200 and the second staggered tube group 400 are set as two groups and arranged symmetrically along the support frame, which makes the structure of the heater more stable and able to withstand greater pressure and temperature changes.

[0063] In summary, the staggered-winding heater provided by this utility model has advantages such as simple structure, easy on-site fabrication, compact structure, high space utilization, simple connection structure, safety and reliability, good heat exchange effect, and good stability, and has broad application prospects. 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 have been clearly and completely described above with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0064] Therefore, the above detailed description of the embodiments of the present invention disclosed in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0065] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0066] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0067] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 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 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 utility model according to the specific circumstances.

[0068] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0070] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A staggered-winding heater, characterized in that, include: Inner support frame; as well as The first staggered tube assembly includes multiple first arc-shaped tubes, multiple second arc-shaped tubes, and multiple first connecting tubes. The first arc-shaped tubes and the second arc-shaped tubes are arranged on opposite sides. The first end of the first arc-shaped tube is connected to the first end of the second arc-shaped tube through the first connecting tube. The second end of the first arc-shaped tube is connected to the second end of another second arc-shaped tube through the first connecting tube. Each first arc-shaped tube and each second arc-shaped tube are sequentially connected and wound around the outside of the inner support frame. The bending radius of the first arc-shaped tube is greater than the bending radius of the second arc-shaped tube.

2. The staggered-winding heater according to claim 1, characterized in that, Also includes: A hanger is installed on the inner support frame, and the support part of the hanger is located outside the first staggered tube group; as well as The second staggered tube assembly includes multiple third arc-shaped tubes, multiple fourth arc-shaped tubes, and multiple second connecting tubes. The third arc-shaped tubes and the fourth arc-shaped tubes are arranged on opposite sides. The first end of the third arc-shaped tube is connected to the first end of the fourth arc-shaped tube through the first connecting tube. The second end of the third arc-shaped tube is connected to the second end of another fourth arc-shaped tube through the first connecting tube. Each third arc-shaped tube and each fourth arc-shaped tube are connected in sequence and wound around the outside of the hanger. The third arc-shaped tube at the end is connected to the first arc-shaped tube at the end through the second arc-shaped tube.

3. The staggered-winding heater according to claim 2, characterized in that, The bending radius of the fourth arc-shaped tube is greater than that of the third arc-shaped tube.

4. The staggered-winding heater according to claim 2, characterized in that, The bending radius of the third arc-shaped tube is equal to that of the first arc-shaped tube.

5. The staggered-winding heater according to claim 2, characterized in that, The length of the second connecting pipe is greater than the length of the first connecting pipe.

6. The staggered-winding heater according to claim 2, characterized in that, The winding direction of the second staggered tube group is the same as that of the first staggered tube group.

7. The staggered-winding heater according to claim 2, characterized in that, It also includes an inlet pipe and an outlet pipe, wherein the inlet pipe is connected to the first arc-shaped pipe located at the end, and the outlet pipe is connected to the third arc-shaped pipe located at the end.

8. The staggered-winding heater according to claim 2, characterized in that, The first staggered tube group is configured as two groups, and the two groups of the first staggered tube group are symmetrically arranged along the inner support frame.

9. The staggered-winding heater according to claim 8, characterized in that, The second staggered tube group is configured as two groups, and the two groups of the second staggered tube group are symmetrically arranged along the bracket.

10. The staggered-winding heater according to any one of claims 1 to 9, characterized in that, The bending radius of the second arc-shaped tube is greater than or equal to twice the diameter of the second arc-shaped tube.

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