Three-dimensional fin with self-adaptive adjustment function

Abstract

The utility model relates to the technical field of three-dimensional finned tubes, and discloses a three-dimensional fin with a self-adaptive adjusting function, which comprises a three-dimensional fin sleeved on the periphery of a pipeline body, an accommodating groove is arranged on the outer side surface of the three-dimensional fin along the circumferential direction, and a self-adaptive adjusting mechanism is arranged in the accommodating groove. The self-adaptive adjusting mechanism comprises four air bags which are evenly arranged at intervals in the circumferential direction, four sector-ring-shaped sliding blocks are arranged on the outer sides of the air bags, the sliding blocks correspond to the air bags one to one, stopping blocks are arranged at the intervals between the adjacent air bags, and limiting mechanisms are arranged at the intervals between the adjacent sliding blocks. The limiting structure comprises a limiting rod fixedly connected with the end face of the sliding block, the groove wall of the containing groove is fixedly connected with a limiting column, and a reset spring is arranged between the limiting rod and the stopping block. Through the arrangement of the self-adaptive adjusting mechanism, the sliding block can be promoted to slide outwards or inwards according to the temperature change of a working medium in the pipeline body, so that the self-adaptive adjustment of the heat transfer area of the three-dimensional fins is realized, and the heat transfer efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of finned tubes, and in particular relates to a three-dimensional fin with a self-adaptive adjustment function. Background Art

[0002] The rapid development of modern industry, coupled with the widespread use of non-renewable energy, has led to resource depletion and a deteriorating living environment. Energy conservation and emission reduction have become crucial tools for sustainable development in human society. Heat exchangers, as heat transfer equipment, are widely used in various industrial sectors, including electricity, metallurgy, and chemical engineering. By enhancing heat transfer technology, they not only achieve energy conservation and environmental protection, but also reduce investment and operating costs. Finned tubes, the most fundamental and important structure in heat exchange equipment, operate according to the following principle: Fins are added to the surface of the heat exchange tube to increase the heat transfer area, thereby improving heat exchange efficiency.

[0003] The fins on heat exchange pipes are typically fixed in size, meaning their heat transfer area is constant. However, the temperature and flow rate of the working fluid (liquid or gas) in the pipes are not constant. Consequently, when the working fluid temperature is high, the fins' heat transfer area is relatively small, resulting in low heat transfer efficiency. Existing technology often uses oversized fins, which not only makes them prone to dust accumulation but also wastes resources and increases replacement and operating costs. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a three-dimensional fin with an adaptive adjustment function to solve the technical problem in the prior art that the heat exchange area of the fin cannot be adaptively adjusted with the temperature of the working medium.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] A three-dimensional fin with an adaptive adjustment function comprises a three-dimensional fin sleeved on the periphery of a pipe body, an accommodating groove is provided on the outer surface of the three-dimensional fin in the circumferential direction, an adaptive adjustment mechanism is provided in the accommodating groove, the adaptive adjustment mechanism comprises four air bags evenly spaced in the circumferential direction, the air bags are fan-shaped, four fan-shaped sliders are provided on the outer side of the air bags, the sliders correspond to the air bags one-to-one, the air bags and the sliders are in smooth contact, blocking blocks are provided at the intervals between adjacent air bags, a limiting mechanism is provided at the intervals between adjacent sliders, the limiting structure comprises a limiting rod fixedly connected to the end face of the slider, the limiting rods on adjacent sliders are staggered, a limiting column is fixedly connected to the groove wall of the accommodating groove, the limiting column corresponds to the limiting rod one-to-one, and a reset spring is provided between the limiting rod and the blocking block;

[0007] Furthermore, the receiving groove extends inwardly along the radial direction of the three-dimensional fin, and a gap is left between the bottom of the receiving groove and the inner side surface of the three-dimensional fin;

[0008] Furthermore, the inner side of the airbag is fixedly connected to the bottom of the receiving groove, and the ring width of the airbag is one third of the depth of the receiving groove;

[0009] Furthermore, the intervals between adjacent sliders are consistent with the interval widths between adjacent airbags;

[0010] Furthermore, the thickness of the slider is consistent with the height of the receiving groove to achieve a sliding connection between the two. The ring width of the slider is two-thirds of the depth of the receiving groove. In the initial state, the outer side of the slider is flush with the outer side of the three-dimensional rib.

[0011] Furthermore, the two side surfaces of the blocking block respectively abut against the airbags on both sides, and the thickness of the blocking block is consistent with the height of the receiving groove;

[0012] Furthermore, a gasket is provided between the three-dimensional fin and the pipe body. The three-dimensional fin and the gasket are fixedly connected. The gasket is sleeved around the outer periphery of the pipe body and is slidably connected to the outer wall of the pipe body. The lower and upper end surfaces of the gasket are both slidably connected to a locking strip. The locking strip has threaded holes at both ends, and the ends of the locking strip are locked by locking screws.

[0013] The beneficial effects of the present invention are:

[0014] (1) Compared with the existing technology, the setting of the adaptive adjustment mechanism can cause the slider to slide outward or inward according to the change of the working medium temperature in the pipeline body, thereby realizing the adaptive adjustment of the heat transfer area of the three-dimensional fins and improving the heat transfer efficiency. Moreover, when the slider is completely inside the receiving groove, that is, the outer side of the slider is flush with the outer side of the three-dimensional fins, the contact area between the three-dimensional fins and the air can be reduced, thereby preventing a large amount of dust accumulation on the three-dimensional fins;

[0015] (2) Through the gasket and locking strip, the spacing between multiple three-dimensional fins can be adjusted to adapt to different temperature requirements and ensure heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention is described with the following drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the three-dimensional fins with adaptive adjustment function in the first embodiment of the present utility model;

[0018] Figure 2 This is a partial cross-sectional view of the pipe body and the three-dimensional fins in the first embodiment of the present invention;

[0019] Figure 3 for Figure 2 A magnified view of point A1 in the middle;

[0020] Figure 4 This is a schematic diagram of the pipe body and three-dimensional fins in the first embodiment of the present invention;

[0021] Figure 5 for Figure 4 A magnified view of A3 in the middle;

[0022] Figure 6 Schematic diagram of the adaptive adjustment mechanism and the limiting mechanism in the first embodiment of the present utility model (hiding the three-dimensional ribs);

[0023] Figure 7 for Figure 6 A magnified view of the A4 position in the middle;

[0024] Figure 8 for Figure 2 Enlarged view of point A2 in the middle.

[0025] The following are marked in the accompanying drawings:

[0026] Pipe body 1, three-dimensional ribs 2, accommodating groove 21, adaptive adjustment mechanism 3, airbag 31, slider 32, blocking block 33, limiting mechanism 4, limiting rod 41, limiting column 42, return spring 43, gasket 5, slide groove 51, locking strip 6, sliding protrusion 61, locking screw 7, shielding belt 8. DETAILED DESCRIPTION

[0027] Example 1, specifically as Figures 1-8 shown.

[0028] like Figure 1 As shown, a three-dimensional fin with adaptive adjustment function includes multiple three-dimensional fins 2 sleeved around the periphery of a pipe body 1. The three-dimensional fins 2 are circular, effectively ensuring uniform heat exchange. Rectangular receiving grooves 21 are circumferentially defined on the outer surfaces of the three-dimensional fins 2. The receiving grooves 21 extend inward along the radius of the three-dimensional fins 2, and a gap is left between the bottom of the receiving grooves 21 and the inner side of the three-dimensional fins 2.

[0029] The accommodating groove 21 houses an adaptive adjustment mechanism 3, comprising four airbags 31 spaced evenly around the circumference. These airbags 31 are fan-shaped, with their inner surfaces secured to the bottom of the accommodating groove 21 by adhesive bonding. The width of these airbags 31 is one-third the depth of the accommodating groove 21. These airbags 31 are made of a high-temperature-resistant rubber material (such as silicone rubber or EPDM) and are filled with helium. As an inert gas, helium has a simple molecular structure and weak intermolecular forces, resulting in significant expansion at elevated temperatures.

[0030] Four fan-shaped sliders 32 are evenly spaced along the circumference of the outer side of the airbag 31. Each slider 32 corresponds to the airbag 31, and the spacing between adjacent sliders 32 is consistent with the width of the spacing between adjacent airbags 31, ensuring smooth contact between the airbag 31 and the sliders 32. The thickness of the sliders 32 matches the height of the receiving groove 21, achieving a sliding connection between the two. The width of the sliders 32 is two-thirds the depth of the receiving groove 21. In the initial state, the outer surface of the sliders 32 is flush with the outer surface of the three-dimensional fin 2.

[0031] To limit the expansion direction of the airbags 31, a blocking block 32 is provided between adjacent airbags 31. The inner end surface of the blocking block 32 is fixedly connected to the bottom of the receiving slot 21 by welding. In this embodiment, the side surfaces of the blocking block 32 respectively abut against the airbags 31 on either side, and the thickness of the blocking block 32 is consistent with the height of the receiving slot 21. The provision of the blocking block 32 limits the expansion of the airbags 31 on both sides, so that the airbags 31 can only expand in a single direction, toward the opening of the receiving slot 21.

[0032] A limiting mechanism 4 is also provided at the intervals between adjacent sliders 32. In this embodiment, the limiting structure 4 includes an elongated limiting rod 41 welded to the end face of the slider 32. The limiting rod 41 extends perpendicular to the end face of the slider 32 and is spaced apart from the blocking block 33. The limiting rods 41 on adjacent sliders 32 are arranged in an alternating pattern. Limiting posts 42 are welded to the walls of the receiving slot 21, corresponding one-to-one with the limiting rods 41. When the slider 32 slides outward a certain distance, the limiting rod 41 contacts and abuts against the limiting post 42, thereby limiting the slider 32 and preventing it from separating from the three-dimensional ribs. A return spring 43 is provided between the limiting rod 41 and the blocking block 33, along the opening direction of the receiving slot 21, to reset the slider 32.

[0033] During use, as the temperature of the working fluid (liquid or gas) within the pipe body 1 rises, the gas within the airbag 31 expands due to the heat, causing the airbag 31 to expand and deform toward the opening of the receiving groove 21. This expansion and deformation of the airbag 31 applies a thrust to the slider 32, causing it to slide outward and partially expose the outer side of the three-dimensional fins 2. This increases the heat transfer area of the three-dimensional fins 2 to accommodate the rising working fluid temperature, thereby improving heat exchange efficiency. Simultaneously, the return spring 43 stretches, and the slider 32 continues to slide outward until the stop rod 41 and the stop post 42 abut against each other. This maximizes the exposed area of the slider 32 and the heat transfer area of the three-dimensional fins 2 reaches its peak.

[0034] When the temperature of the working medium in the pipe body 1 decreases, the expansion deformation degree of the airbag 31 decreases, the airbag 31 begins to shrink, and the slider 32 slides inward under the rebound action of the return spring 43. The exposed area of the slider 32 decreases, and the heat transfer area of the three-dimensional fins 2 is simultaneously reduced to adapt to the decrease in the working medium temperature, which is also beneficial to improving the heat exchange efficiency.

[0035] The adaptive adjustment mechanism 3 can cause the slider 32 to slide outward or inward according to changes in the working medium temperature within the pipe body 1, thereby achieving adaptive adjustment of the heat transfer area of the three-dimensional fins 2 and improving heat transfer efficiency. Furthermore, when the slider 32 is completely within the receiving groove 21, that is, the outer surface of the slider 32 is flush with the outer surface of the three-dimensional fin 2, the contact area between the three-dimensional fin 2 and the air is reduced, thereby preventing large amounts of dust accumulation on the three-dimensional fin 2.

[0036] A gasket 5 is provided between the three-dimensional fin 2 and the pipe body 1. The three-dimensional fin 2 and the gasket 5 are welded. The gasket 5 is sleeved on the periphery of the pipe body 1 and is slidably connected to the outer wall of the pipe body 1. The lower and upper end faces of the gasket 5 are both slidably connected to a locking strip 6, wherein a slide groove 51 is provided on the end face of the gasket 5, and a sliding protrusion 61 is integrally formed on the bottom face of the locking strip 6. The sliding groove 51 and the sliding protrusion 61 realize the sliding connection between the gasket 5 and the locking strip 6. Threaded holes are provided at both ends of the locking strip 6, and the two ends of the locking strip 6 are locked by a locking screw 7 so that the locking strip 6 is pressed and fixed to the pipe body 1. In this embodiment, the locking strip 6 is made of an elastic material, such as rubber.

[0037] During use, the locking strip 6 can be loosened to slide the three-dimensional fins 2 along the pipe body 1, thereby adjusting the spacing between the multiple three-dimensional fins 2 to adapt to different temperature requirements and ensure heat transfer efficiency.

[0038] A shielding strip 8 is also glued to the outer side surface of the adjacent slider 32. The height of the shielding strip 8 is consistent with the thickness of the slider 32. The shielding strip 8 is also made of high-temperature resistant rubber material (such as silicone rubber, EPDM rubber, etc.). When the slider 32 is completely located inside the accommodating groove 21, the shielding strip 8 can seal the gap on the accommodating groove 21, thereby preventing impurities or other contaminants from entering the accommodating groove 21.

[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A three-dimensional fin with adaptive adjustment function, characterized in that: It includes a three-dimensional rib sleeved on the periphery of the pipe body, and a receiving groove is opened on the outer surface of the three-dimensional rib in the circumferential direction. An adaptive adjustment mechanism is provided in the receiving groove. The adaptive adjustment mechanism includes four air bags evenly spaced along the circumferential direction. The air bags are fan-shaped. Four fan-shaped sliders are provided on the outside of the air bags. The sliders correspond to the air bags one-to-one, and the air bags and the sliders are in smooth contact. Blocking blocks are provided at the intervals between adjacent air bags, and a limiting mechanism is provided at the intervals between adjacent sliders. The limiting structure includes a limiting rod fixedly connected to the end face of the slider, and the limiting rods on adjacent sliders are staggered. A limiting column is fixedly connected to the groove wall of the receiving groove, and the limiting column corresponds to the limiting rod one-to-one. A reset spring is provided between the limiting rod and the blocking block.

2. The three-dimensional fin with adaptive adjustment function according to claim 1, characterized in that: The accommodating groove extends inwardly along the radial direction of the three-dimensional fin, and a gap is left between the groove bottom of the accommodating groove and the inner side surface of the three-dimensional fin.

3. The three-dimensional fin with adaptive adjustment function according to claim 2, characterized in that: The inner side surface of the airbag is fixedly connected to the bottom of the accommodating groove, and the ring width of the airbag is one third of the depth of the accommodating groove.

4. The three-dimensional fin with adaptive adjustment function according to claim 3, characterized in that: The intervals between adjacent sliders are consistent with the interval widths between adjacent airbags.

5. The three-dimensional fin with adaptive adjustment function according to claim 4, characterized in that: The thickness of the slider is consistent with the height of the receiving groove to achieve a sliding connection between the two. The ring width of the slider is two-thirds of the depth of the receiving groove. In the initial state, the outer side of the slider is flush with the outer side of the three-dimensional rib.

6. The three-dimensional fin with adaptive adjustment function according to claim 5, characterized in that: The two side surfaces of the blocking block respectively abut against the air bags on both sides, and the thickness of the blocking block is consistent with the height of the accommodating groove.

7. The three-dimensional fin with adaptive adjustment function according to claim 6, characterized in that: A gasket is provided between the three-dimensional rib and the pipe body. The three-dimensional rib is fixedly connected to the gasket. The gasket is sleeved on the outer periphery of the pipe body and is slidingly connected to the outer wall of the pipe body. The lower and upper end surfaces of the gasket are both slidingly connected with locking strips, and threaded holes are opened at both ends of the locking strip. The two ends of the locking strip are locked by locking screws.

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