A heat dissipation structure of an oil-immersed resonant reactor for long-term test of a cable

Abstract

The utility model relates to power equipment technical field, concretely relates to a heat dissipation structure of oil immersed resonance reactor for cable long -term test, include: reactor body still include support frame, heat dissipation fin, side ear, T -shaped heat conduction fin, serpentine fin, water -cooling pipe and flange. Through support frame, and accord with the reactor body national standard size, ensure and the reactor body fit, firm assembly, utilize serpentine fin, adopt memory metal and hollow isosceles trapezoidal structure, heat can be automatically unfolded and increase the heat conduction area, improve the existing fixed fin heat conduction area invariable, heat easy accumulation problem, while serpentine fin inner wall fixed water -cooling pipe, shorten the heat transfer path, the circumferential array heat dissipation fin of support frame outer wall form water -cooling main lead and air -cooling auxiliary double -way heat dissipation, can with the temperature rise synchronous promotion heat conduction and heat dissipation capacity in the reactor long -term test, be favorable to avoid the heat dissipation efficiency with the test length drop.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a heat dissipation structure for an oil-immersed resonant reactor used for long-term cable testing. Background Technology

[0002] In long-term cable testing, oil-immersed resonant reactors need to operate stably for extended periods. However, the losses in their windings and cores continuously generate heat. Existing heat dissipation solutions are inadequate. The structure with fixed metal fins means that the heat conduction area cannot be adjusted as the temperature rises, leading to heat accumulation and reduced efficiency. This often results in a mismatch between heat dissipation capacity and heat generation rate, which in turn causes the reactor temperature to exceed the limit, affecting test accuracy and equipment lifespan.

[0003] Therefore, this utility model discloses a heat dissipation structure for an oil-immersed resonant reactor used for long-term cable testing. Based on a support frame conforming to the national standard dimensions of the reactor body, it is equipped with T-shaped heat-conducting fins and serpentine fins made of shape memory metal. The serpentine fins adopt a hollow isosceles trapezoidal structure, which can expand to increase the heat conduction area when heated. At the same time, the outer wall of the support frame is equipped with a circumferential array of heat dissipation fins to achieve air cooling assistance. This design adapts to the temperature changes of long-term testing through dynamic expansion and dual-path heat dissipation, which helps to improve the problem of poor thermal conductivity and temperature adaptability of existing structures. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a heat dissipation structure for an oil-immersed resonant reactor used in long-term cable testing, comprising: a reactor body, and further comprising a support frame, heat dissipation fins, side lugs, T-shaped heat-conducting fins, serpentine fins, water-cooling pipes, and flanges; the outer wall of the reactor body is provided with a support frame, which is symmetrically arranged about the outer wall of the reactor body; heat dissipation fins are fixedly connected to the outer wall of the support frame, and the heat dissipation fins are distributed in a circumferential array; T-shaped heat-conducting fins and serpentine fins are fixedly connected to the inner wall of the support frame; water-cooling pipes are fixedly connected to the inner wall of the serpentine fins; flanges are fixedly connected to the bottom inlet and top outlet of the water-cooling pipes; and side lugs are symmetrically fixedly connected to the outer wall of the support frame. In the scenario of long-term cable testing, the oil-immersed resonant reactor generates electromagnetic radiation due to continuous operation. Induced heat needs to be dissipated. This heat dissipation structure achieves stable heat dissipation through the collaboration of multiple components. Among them, the support frame that cooperates with the outer wall of the reactor body follows the national standard size design of the reactor body, ensuring a close fit and stable assembly with the outer wall of the body. This helps to avoid heat conduction gaps caused by dimensional deviations and ensures that the overall structure meets industry standards. During the test, the heat generated by the reactor body is first transferred directly to the attached T-shaped heat-conducting fins and serpentine fins through its outer wall. Both are made of high thermal conductivity shape memory metal, which can bear the conducted heat and prevent heat accumulation on the outer wall of the body. At the same time, the support frame not only provides symmetrical support for these two heat-conducting fins, but also helps to disperse heat through the fixed connection with the fins. The T-shaped heat-conducting fins are vertically distributed along the axial direction of the reactor body and form a circumferential array, further uniformly conducting the absorbed heat along the axial direction, laying the foundation for subsequent multi-path heat dissipation.

[0005] Preferably, both the T-shaped and serpentine heat-conducting fins are made of shape memory metal with good thermal conductivity. The T-shaped heat-conducting fins are vertically fixed to the inner wall of the support frame along the axial direction of the reactor body, arranged in a circumferential array. The outer wall of the side lugs is fixedly connected to the outer wall of the reactor body's frame. As the test continues, the temperature of the reactor body gradually increases. Due to the temperature-sensitive characteristics of the shape memory metal, the serpentine fins close to its outer wall begin to deform. Since the cross-section of the serpentine fins is designed as a hollow isosceles trapezoid, this structure allows it to naturally expand outwards when the temperature rises, thereby significantly increasing the contact area with the outer wall of the reactor body and the surrounding heat, improving the limited heat conduction area of ​​traditional fixed fins. The problem is that the water-cooling pipes fixedly connected to the inner wall of the serpentine fins quickly absorb the heat transferred by the fins. The bottom inlet and top outlet of the water-cooling pipes are both fixedly connected to flanges, and the flanges are fixedly sealed to the pipe openings. This not only prevents coolant leakage from affecting the heat dissipation effect, but also enables stable connection with the external water-cooling system through the flanges, forming a closed-loop coolant circuit. During the test, the low-temperature coolant supplied by the external water-cooling system flows in from the bottom inlet of the water-cooling pipe. During the flow inside the pipe, it continuously exchanges heat with the pipe wall to absorb heat. Then, the coolant carrying heat flows out from the top outlet, returns to the external system for cooling, and is circulated again, thus achieving rapid and continuous heat transfer.

[0006] Preferably, the serpentine fins have a hollow isosceles trapezoidal cross-section, and the serpentine fins close to the outer wall of the reactor body can expand as the temperature rises to increase the heat conduction area. While the water-cooling system dominates heat dissipation, the air-cooling system plays an important supplementary role as an auxiliary heat dissipation path. The outer wall of the support frame is fixedly connected with heat dissipation fins distributed in a circumferential array. These heat dissipation fins simultaneously absorb some of the heat dispersed by the support frame, and then gradually dissipate the heat into the air through natural convection with the surrounding air. This dual-path heat dissipation mode, with water cooling as the main method and air cooling as the auxiliary method, is beneficial for providing redundancy protection when there are temporary fluctuations in the heat dissipation path, and helps to avoid the reactor body temperature runaway due to heat dissipation interruption.

[0007] Preferably, the flange is fixedly and sealed to the inlet and outlet of the water-cooling pipe, and the flange is used to realize the detachable connection between the water-cooling pipe and the external water-cooling system. To ensure the stability of the heat dissipation structure in long-term testing, the outer wall of the support frame is symmetrically fixed with side ears. The side ears are fixedly connected to the outer wall of the reactor body frame, fixing all heat dissipation components such as the support frame, heat dissipation fins, T-shaped heat-conducting fins, serpentine fins and water-cooling pipes to the reactor body. This helps to resist the influence of equipment vibration during the test, prevent the heat dissipation components from shifting or falling off, and ensure that the T-shaped heat-conducting fins and serpentine fins are always in contact with the outer wall of the reactor body, which is conducive to achieving long-term stable control of the reactor body temperature.

[0008] The beneficial effects of this utility model are as follows:

[0009] 1. This utility model, by setting serpentine fins and using shape memory metal and a hollow isosceles trapezoidal structure, can automatically expand when heated to increase the heat conduction area, thus improving the problem of the existing fixed fins having a fixed heat conduction area and easy heat accumulation. At the same time, water cooling pipes are fixed on the inner wall of the serpentine fins, shortening the heat transfer path. Combined with the circumferential array of heat dissipation fins on the outer wall of the support frame, it forms a dual-path heat dissipation system with water cooling as the main source and air cooling as the temperature rises during long-term reactor testing, which helps to avoid the heat dissipation efficiency from decreasing with the duration of the test.

[0010] 2. This utility model ensures a close fit and stable assembly with the reactor body by setting a support frame that conforms to the national standard dimensions of the reactor body; the side ears firmly fix all heat dissipation components, which can resist equipment vibration during the test and prevent component displacement from affecting the heat dissipation effect; it is conducive to the overall structure maintaining efficient heat dissipation for a long time, preventing the reactor temperature from exceeding the standard, ensuring the accuracy and reliability of cable test data, and helping to avoid reactor damage due to overheating. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the structure of the snake-shaped fin of this utility model;

[0015] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0016] In the diagram: 1. Reactor body; 2. Support frame; 3. Heat dissipation fins; 4. Side lugs; 5. T-shaped heat-conducting fins; 6. Water cooling pipes; 7. Flange; 8. Snake-shaped fins. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0018] Example:

[0019] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a heat dissipation structure for an oil-immersed resonant reactor used for long-term cable testing, comprising: a reactor body 1, and further comprising a support frame 2, heat dissipation fins 3, side lugs 4, T-shaped heat-conducting fins 5, serpentine fins 8, water-cooling pipes 6, and flanges 7; the outer wall of the reactor body 1 is provided with a support frame 2, the support frame 2 is symmetrically arranged about the outer wall of the reactor body 1, the outer wall of the support frame 2 is fixedly connected with heat dissipation fins 3, and the heat dissipation fins 3 are arranged in a circumferential array, the inner wall of the support frame 2 is fixedly connected with T-shaped heat-conducting fins 5 and serpentine fins 8, the inner wall of the serpentine fins 8 is fixedly connected with water-cooling pipes 6, the bottom inlet and the top outlet of the water-cooling pipes 6 are both fixedly connected with flanges 7, and the outer wall of the support frame 2 is symmetrically fixedly connected with side lugs 4.

[0020] Both the T-shaped heat-conducting fins 5 and the serpentine fins 8 are made of shape memory metal with good thermal conductivity. The T-shaped heat-conducting fins 5 are vertically fixed to the inner wall of the support frame 2 along the axial direction of the reactor body 1 and are distributed in a circumferential array. The outer wall of the side ear 4 is fixedly connected to the outer wall of the frame of the reactor body 1.

[0021] The cross-section of the serpentine fin 8 is a hollow isosceles trapezoid, and the serpentine fin 8 close to the outer wall of the reactor body 1 can expand as the temperature rises to increase the heat conduction area. The flange 7 is fixedly and sealed to the inlet and outlet of the water cooling pipe 6, and the flange 7 is used to realize the detachable connection between the water cooling pipe 6 and the external water cooling system.

[0022] Working principle:

[0023] In long-term cable testing scenarios, the electromagnetic induction heat generated by the continuous operation of the oil-immersed resonant reactor needs to be dissipated. This heat dissipation structure achieves stable heat dissipation through the coordinated action of multiple components. Among them, the support frame 2, which cooperates with the outer wall of the reactor body 1, follows the national standard size design of the reactor body 1 to ensure a close fit and stable assembly with the outer wall of the body. This helps to avoid heat conduction gaps caused by dimensional deviations and ensures that the overall structure meets industry standards. During the test, the heat generated by the reactor body 1 is first directly transferred through its outer wall to the attached T-shaped heat-conducting fins 5 and serpentine fins 8. Both are made of high thermal conductivity shape memory metal, which can bear the conducted heat and prevent heat accumulation on the outer wall of the body. At the same time, the support frame 2 not only provides symmetrical support for these two heat-conducting fins, but also helps to disperse heat through the fixed connection with the fins. The T-shaped heat-conducting fins 5 are vertically distributed along the axial direction of the reactor body 1 and are arranged in a circumferential array, further uniformly conducting the absorbed heat along the axial direction, laying the foundation for subsequent multi-path heat dissipation.

[0024] As the experiment progressed, the temperature of the reactor body 1 gradually increased. Due to the temperature-sensitive properties of the shape memory metal, the serpentine fins 8 close to its outer wall began to deform. Because the cross-section of the serpentine fins 8 is designed as a hollow isosceles trapezoid, this structure allows them to naturally expand outwards as the temperature rises, significantly increasing the contact area with the outer wall and surrounding heat of the reactor body 1. This improves upon the limited heat conduction area of ​​traditional fixed fins. The water-cooling pipes 6, fixedly connected to the inner wall of the serpentine fins 8, quickly absorb the heat transferred by the fins. The water inlet at the bottom and the outlet at the top of the water-cooling pipes 6... All water inlets are fixedly connected to flanges 7, and flanges 7 are fixedly and sealed to the pipe openings. This not only prevents coolant leakage from affecting the heat dissipation effect, but also enables stable connection with the external water cooling system through flanges 7, forming a closed-loop coolant circuit. During the test, the low-temperature coolant supplied by the external water cooling system flows in from the bottom inlet of the water cooling pipe 6. During the flow inside the pipe, it continuously exchanges heat with the pipe wall to absorb heat. Then, the coolant carrying heat flows out from the top outlet, returns to the external system for cooling, and is circulated again, thereby achieving rapid and continuous heat transfer.

[0025] While the water-cooling system dominates heat dissipation, the air-cooling system plays an important supplementary role as an auxiliary heat dissipation path. The outer wall of the support frame 2 is fixedly connected with heat dissipation fins 3 arranged in a circumferential array. These heat dissipation fins 3 simultaneously absorb some of the heat dispersed by the support frame 2, and then gradually dissipate the heat into the air through natural convection with the surrounding air. This dual-path heat dissipation mode, with water cooling as the main component and air cooling as the auxiliary component, is beneficial for providing redundancy protection when there are temporary fluctuations in the heat dissipation path, and helps to avoid the temperature runaway of the reactor body 1 due to heat dissipation interruption.

[0026] To ensure the stability of the heat dissipation structure during long-term testing, the outer wall of the support frame 2 is symmetrically fixed with side lugs 4. The side lugs 4 are fixedly connected to the outer wall of the reactor body 1 frame, fixing all heat dissipation components such as the support frame 2, heat dissipation fins 3, T-shaped heat-conducting fins 5, serpentine fins 8, and water-cooling pipes 6 to the reactor body 1. This helps to resist the impact of equipment vibration during the test, prevents the heat dissipation components from shifting or falling off, and ensures that the T-shaped heat-conducting fins 5 and serpentine fins 8 are always in contact with the outer wall of the reactor body 1, which is conducive to achieving long-term stable temperature control of the reactor body 1.

[0027] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A heat dissipation structure for an oil-immersed resonant reactor used in long-term cable testing, comprising: The reactor body (1) is characterized in that it further includes a support frame (2), heat dissipation fins (3), side ears (4), T-shaped heat-conducting fins (5), serpentine fins (8), water-cooling pipes (6) and flanges (7); the outer wall of the reactor body (1) is provided with a support frame (2), the support frame (2) is symmetrically arranged about the outer wall of the reactor body (1), the outer wall of the support frame (2) is fixedly connected with heat dissipation fins (3), and the heat dissipation fins (3) are arranged in a circumferential array, the inner wall of the support frame (2) is fixedly connected with T-shaped heat-conducting fins (5) and serpentine fins (8), the inner wall of the serpentine fins (8) is fixedly connected with water-cooling pipes (6), the bottom inlet and the top outlet of the water-cooling pipes (6) are both fixedly connected with flanges (7), and the outer wall of the support frame (2) is symmetrically fixedly connected with side ears (4).

2. The heat dissipation structure of the oil-immersed resonant reactor for long-term cable testing according to claim 1, characterized in that, The T-shaped heat-conducting fins (5) and the serpentine fins (8) are both made of shape memory metal with good thermal conductivity. The T-shaped heat-conducting fins (5) are vertically fixed to the inner wall of the support frame (2) along the axial direction of the reactor body (1) and are distributed in a circumferential array. The outer wall of the side ear (4) is fixedly connected to the outer wall of the frame of the reactor body (1).

3. The heat dissipation structure of the oil-immersed resonant reactor for long-term cable testing according to claim 1, characterized in that, The cross-section of the serpentine fin (8) is a hollow isosceles trapezoid, and the serpentine fin (8) close to the outer wall of the reactor body (1) can expand as the temperature rises to increase the heat conduction area.

4. The heat dissipation structure of the oil-immersed resonant reactor for long-term cable testing according to claim 1, characterized in that, The flange (7) is fixedly and sealed to the inlet and outlet of the water-cooling pipe (6), and the flange (7) is used to realize the detachable connection between the water-cooling pipe (6) and the external water-cooling system.

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