Moisture-proof transformer box

Abstract

The utility model discloses a kind of damp-proof transformer box, including transformer box body, the sidewall of transformer box body is located upper heat dissipation port and lower heat dissipation port, heat exchange partition is equipped in the transformer box body, the periphery of heat exchange partition is connected with the inner wall of transformer box body, heat exchange partition and the transformer box body form first airflow channel, first airflow channel is communicated with upper heat dissipation port and lower heat dissipation port, first fan is equipped in first airflow channel, second fan is equipped in the transformer box body.The utility model is to provide a kind of damp-proof transformer box, outside airflow is isolated with the airflow inside box, and let two airflow heat exchange in heat exchange partition, prevent moisture from entering the inside of box while the heat of inside box is dissipated, with good damp-proof effect, can be widely applied in various transformer box body scenes.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer box body, and in particular to a moisture-proof transformer box. Background Technology

[0002] The transformer box is a key piece of equipment in a power system used for power distribution, control, and protection. It typically consists of a enclosure, switchgear, protective electrical devices, and connecting wires. Widely used in various power transmission and usage scenarios such as urban power grids, industrial plants, residential areas, and transportation hubs, it is a crucial infrastructure for ensuring the stable operation of the power system. Moisture prevention of the transformer box is paramount because moisture entering the box can severely damage its internal electrical components and equipment. Firstly, moisture can cause condensation on the surfaces of electrical components, reducing insulation performance and easily leading to short circuits, leakage, and other faults. This not only affects the stability of the power supply but may also threaten the personal safety of operators. Secondly, prolonged exposure to a humid environment can cause oxidation and corrosion of metal parts, shortening the equipment's lifespan, increasing maintenance costs and replacement frequency, and potentially even triggering large-scale power outages, causing significant inconvenience and losses to production and daily life.

[0003] In certain scenarios, moisture protection for the transformer box itself is particularly important. Coastal areas, due to their proximity to the ocean, have high salt content and humidity in the air. This high humidity accelerates moisture intrusion and equipment corrosion, placing higher demands on the moisture protection performance of the transformer box. Rainy and foggy areas experience constant humidity and frequent rainfall, making it easier for moisture to enter the box through gaps, leading to excessive humidity levels. In underground environments such as basements and parking lots, poor ventilation and air circulation make it difficult for moisture to dissipate, easily accumulating inside the transformer box. Industrial workshops, such as food processing and dyeing plants, generate large amounts of moisture during production, resulting in high humidity. Transformers exposed to such environments for extended periods are at significantly increased risk of moisture damage. Furthermore, in some humid southern regions, especially during the plum rain season, the persistent high humidity makes moisture protection for the transformer box essential.

[0004] Existing technology uses sealing technology to prevent moisture in some transformer boxes. For example, when the external humidity is too high, the air inlet and outlet of the box are sealed to prevent moisture from entering the transformer box. However, after the box is sealed, the heat generated by the internal electrical components and equipment is difficult to dissipate, resulting in excessively high temperature inside the box, which has an adverse effect on the electrical components. This method is not suitable for scenarios where the ambient humidity is too high throughout the day. Utility Model Content

[0005] In view of the above-mentioned prior art, the present invention provides a moisture-proof transformer box that isolates the external airflow from the internal airflow of the box and allows the two airflows to exchange heat through the heat exchange baffle. This prevents moisture from entering the box while dissipating the heat inside the box, thus providing a good moisture-proof effect and enabling its wide application in various transformer box scenarios.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows: A moisture-proof transformer box includes a transformer box body, with an upper heat dissipation vent and a lower heat dissipation vent on the side wall of the transformer box body. A heat exchange baffle is provided inside the transformer box body, and the heat exchange baffle is connected to the inner wall of the transformer box body on all four sides. The heat exchange baffle and the transformer box body form a first airflow channel, which is connected to the upper heat dissipation vent and the lower heat dissipation vent. A first fan is provided in the first airflow channel, and a second fan is provided inside the transformer box body.

[0007] Furthermore, the transformer box body is provided with an insulating plate, the upper end of the insulating plate is provided with an upper airflow port, the lower end is provided with a lower airflow port, a second airflow channel is formed between the insulating plate and the heat exchange partition, the second fan is located in the second airflow channel, and the second fan is fixed on the insulating plate.

[0008] Furthermore, the inner wall of the transformer box body is provided with a first mounting bracket, and the first fan is fixed on the first mounting bracket.

[0009] Furthermore, the insulating plate is disposed on the second mounting bracket, and the second fan is fixed on the second mounting bracket.

[0010] Furthermore, the first or second mounting bracket is an L-shaped bracket, with one end fixed to the side wall or insulating plate of the transformer box body, and the other end connected to the first or second fan.

[0011] Furthermore, there are multiple first fans and second fans.

[0012] Furthermore, the heat exchange baffle is provided with several vertical heat dissipation fins on both sides, and the heat dissipation fins are spaced apart.

[0013] Furthermore, the heat exchange baffle includes copper sheets and support bars, the support bars are vertically fixed to the side wall of the transformer box body, and the copper sheets are fixedly connected to the support bars.

[0014] Furthermore, the support bar is a metal support bar, and both ends of the support bar are welded to the inner wall of the transformer box body. An insulating pad is provided between the support bar and the copper sheet. The copper sheet is connected to the insulating pad by a first fixing nail, and the insulating pad is connected to the support bar by a second fixing nail.

[0015] Furthermore, the copper sheet is fixed inside the insulating frame, and the insulating frame abuts against the inner wall of the transformer box body.

[0016] The beneficial effects of this utility model are as follows: The heat exchange baffle isolates the transformer box body. Outside air enters through the lower heat dissipation vent and exits through the upper heat dissipation vent. This outside air is located within the first airflow channel, which is isolated from the electrical equipment inside the transformer box body. This prevents moisture from the outside air from contacting the electrical equipment, providing excellent moisture protection and making it suitable for use in various humid environments. A first fan is installed within the first airflow channel. When the first fan operates, it drives airflow, allowing air to enter through the lower heat dissipation vent and exit through the upper heat dissipation vent. Simultaneously, a second fan is also installed inside the transformer box body. The second fan promotes airflow circulation within the transformer box body. The airflow inside the transformer box body exchanges heat with the outside airflow through the heat exchange baffle, thereby reducing the temperature inside the transformer box body and preventing outside airflow from entering the transformer box body and damaging the electrical equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a moisture-proof transformer box according to Embodiment 1 of this application; Figure 2 This is a schematic diagram of the connection structure between the first fan and the L-shaped frame in Embodiment 1 of this application; Figure 3 This is a three-dimensional structural diagram of the heat exchange baffle in Embodiment 2 of this application; Figure 4 This is a partial cross-sectional structural diagram of the heat exchange baffle in Embodiment 2 of this application; Explanation of icon numbers: 1. Transformer box body; 2. Upper heat dissipation vent; 3. Lower heat dissipation vent; 4. Heat exchange baffle; 5. First airflow channel; 6. First fan; 7. Second fan; 8. Insulation plate; 9. Upper airflow inlet; 10. Lower airflow inlet; 11. Second airflow channel; 12. First mounting bracket; 13. Second mounting bracket; 14. L-shaped bracket; 15. Heat dissipation fins; 16. Copper sheet; 17. Support bar; 18. Insulating pad; 19. First fixing nail; 20. Second fixing nail; 21. Insulating frame; 22. Heat dissipation fins. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0019] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Example 1 Please refer to the attached document. Figures 1-2 This application provides a moisture-proof transformer box 1, including a transformer box body 1. The side walls of the transformer box body 1 are provided with an upper heat dissipation vent 2 and a lower heat dissipation vent 3. A heat exchange baffle 4 is provided inside the transformer box body 1. The heat exchange baffle 4 is connected to the inner wall of the transformer box body 1 on all four sides. The heat exchange baffle 4 and the transformer box body 1 form a first airflow channel 5. The first airflow channel 5 communicates with the upper heat dissipation vent 2 and the lower heat dissipation vent 3. A first fan 6 is provided inside the first airflow channel 5, and a second fan 7 is provided inside the transformer box body 1. The interior of the transformer box body 1 is used to install electrical equipment. The heat exchange baffle 4 is also provided inside the transformer box body 1, isolating the transformer box body 1. Outside air enters through the lower heat dissipation vent 3 and exits through the upper heat dissipation vent 2. The outside air is located within the first airflow channel 5, which is isolated from the electrical equipment inside the transformer box body 1. This prevents moisture from the outside air from contacting the electrical equipment, achieving a good moisture-proof effect, suitable for use in humid environments. A first fan 6 is installed in the first airflow channel 5. When the first fan 6 is working, it drives airflow, allowing air to enter from the lower heat dissipation port 3 and then exit from the upper heat dissipation port 2. At the same time, a second fan 7 is also installed in the transformer box body 1. The second fan 7 promotes airflow circulation within the transformer box body 1. The airflow inside the transformer box body 1 exchanges heat with the outside airflow through the heat exchange baffle 4, thereby reducing the temperature inside the transformer box body 1 and preventing outside airflow from entering the transformer box body 1 and damaging the electrical equipment.

[0021] Specifically, the transformer box body 1 is equipped with an insulating plate 8. The upper end of the insulating plate 8 has an upper airflow inlet 9, and the lower end has a lower airflow inlet 10. A second airflow channel 11 is formed between the insulating plate 8 and the heat exchange partition 4. The second fan 7 is located in the second airflow channel 11 and is fixed to the insulating plate 8. When the second fan 7 is working, it drives the airflow in the second airflow channel 11. The air in the second airflow channel 11 enters from the upper airflow inlet 9 and then exits from the lower airflow inlet 10, or enters from the lower airflow inlet 10 and then exits from the upper airflow inlet 9. The air in the first airflow channel 5 and the second airflow channel 11 undergoes heat exchange through the heat exchange partition 4, which can remove the heat in the transformer box body 1 and prevent humid air from entering the transformer box body 1. When the airflow in the transformer box body 1 passes through the second airflow channel 11, the flow velocity in the second airflow channel 11 is faster because the cross-sectional area of ​​the second airflow channel 11 is smaller than the internal cross-sectional area of ​​the transformer box body 1. This ensures that the heat in the transformer box body 1 is effectively dissipated while maintaining the moisture-proof performance. The insulating plate 8 serves to isolate the electrical equipment inside the transformer box body 1 from the heat exchange baffle 4, thereby improving the ability to prevent leakage.

[0022] Specifically, the inner wall of the transformer box body 1 is provided with a first mounting bracket 12, and the first fan 6 is fixed on the first mounting bracket 12. Fixing the first fan 6 with the first mounting bracket 12 facilitates the installation and operation of the first fan 6, and also improves the stability and service life of the first fan 6.

[0023] Specifically, the insulating plate 8 is disposed on the second mounting bracket 13, and the second fan 7 is fixed on the second mounting bracket 13. Fixing the second fan 7 with the second mounting bracket 13 facilitates the installation and operation of the second fan 7, and also improves the stability and service life of the second fan 7.

[0024] Specifically, the first mounting bracket 12 or the second mounting bracket 13 is an L-shaped bracket 14. One end of the L-shaped bracket 14 is fixed to the side wall of the transformer box body 1 or the insulating plate 8, and the other end is connected to the first fan 6 or the second fan 7. The L-shaped bracket 14 is bolted or welded to the side wall of the transformer box body 1 and fixed to the insulating plate 8. Mounting holes are provided on the L-shaped bracket, and then the first fan 6 or the second fan 7 is installed in the mounting holes.

[0025] Optionally, there may be multiple first fans 6 and second fans 7. These promote airflow, preventing moisture buildup inside the transformer box body 1 while ensuring heat dissipation.

[0026] Example 2 Please refer to the attached document. Figures 3-4The difference between this embodiment and the previous one is that the heat exchange baffle 4 has several vertical heat dissipation fins 22 on both sides, and the heat dissipation fins 22 are spaced apart. The heat dissipation fins 22 increase the air contact area, improve the heat exchange efficiency, and are beneficial to the cooling of the transformer box body 1. Optionally, the heat exchange baffle 4 is a copper plate to improve heat exchange efficiency.

[0027] Optionally, the heat exchange baffle 4 includes a copper sheet 16 and a support strip 17. The support strip 17 is vertically fixed to the side wall of the transformer box body 1, and the copper sheet 16 is fixedly connected to the support strip 17. The copper sheet 16 has good thermal conductivity, which can improve the heat exchange between the outside air and the airflow inside the transformer box body 1. The support strip 17 can improve the structural strength of the heat exchange baffle 4.

[0028] Specifically, the support bar 17 is a metal support bar. Both ends of the support bar 17 are welded to the inner wall of the transformer box body 1. An insulating pad 18 is provided between the support bar 17 and the copper sheet 16. The copper sheet 16 is connected to the insulating pad 18 via a first fixing nail 19, and the insulating pad 18 is connected to the support bar 17 via a second fixing nail 20. The support bar 17 is directly welded to the inside of the transformer box body 1. The first fixing nail 19 passes through the copper sheet 16 into the insulating pad 18, with the tip of the first fixing nail 19 located inside the insulating pad 18. The second fixing nail 20 passes through the support bar 17 into the insulating pad 18, with the tip of the second fixing nail 20 also located inside the insulating pad 18. The insulating pad 18 separates the support bar 17 and the copper sheet 16. The first fixing nail 19 and the second fixing nail 20 are located inside the insulating pad 18, preventing the fixing nails from simultaneously connecting the support bar 17 and the copper sheet 16, avoiding direct contact between different metal materials that could lead to electrochemical corrosion, and improving service life.

[0029] Specifically, the copper sheet 16 is fixed inside the insulating frame 21, which abuts against the inner wall of the transformer box body 1. The insulating frame 21 surrounds the copper sheet 16, filling the gap between the copper sheet 16 and the transformer box body 1, thus improving the sealing between them and preventing airflow from entering the transformer box body 1 from the edges of the copper sheet 16. Simultaneously, the insulating frame 21 also prevents direct contact between the copper sheet 16 and the transformer box body 1, preventing electrochemical corrosion and extending service life.

[0030] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A moisture-proof transformer box, characterized in that, The transformer box includes a transformer box body (1), the side walls of which are provided with an upper heat dissipation port (2) and a lower heat dissipation port (3). A heat exchange baffle (4) is provided inside the transformer box body (1). The heat exchange baffle (4) is connected to the inner wall of the transformer box body (1) around its perimeter. The heat exchange baffle (4) and the transformer box body (1) form a first airflow channel (5). The first airflow channel (5) is connected to the upper heat dissipation port (2) and the lower heat dissipation port (3). A first fan (6) is provided inside the first airflow channel (5). A second fan (7) is provided inside the transformer box body (1).

2. A moisture-proof transformer box according to claim 1, characterized in that, The transformer box body (1) is provided with an insulating plate (8). The upper end of the insulating plate (8) is provided with an upper airflow port (9) and the lower end is provided with a lower airflow port (10). A second airflow channel (11) is formed between the insulating plate (8) and the heat exchange partition (4). The second fan (7) is located in the second airflow channel (11) and is fixed on the insulating plate (8).

3. A moisture-proof transformer box according to claim 2, characterized in that, The inner wall of the transformer box body (1) is provided with a first mounting bracket (12), and the first fan (6) is fixed on the first mounting bracket (12).

4. A moisture-proof transformer box according to claim 3, characterized in that, The insulating plate (8) is disposed on the second mounting bracket (13), and the second fan (7) is fixed on the second mounting bracket (13).

5. A moisture-proof transformer box according to claim 4, characterized in that, The first mounting bracket (12) or the second mounting bracket (13) is an L-shaped bracket (14). One end of the L-shaped bracket (14) is fixed to the side wall or the insulating plate (8) of the transformer box body (1), and the other end is connected to the first fan (6) or the second fan (7).

6. A moisture-proof transformer box according to claim 1, characterized in that, The number of the first fan (6) and the second fan (7) is multiple.

7. A moisture-proof transformer box according to claim 1, characterized in that, The heat exchange baffle (4) has several vertical heat dissipation fins (22) on both sides, and the heat dissipation fins (22) are spaced apart.

8. A moisture-proof transformer box according to claim 1, characterized in that, The heat exchange baffle (4) includes a copper sheet (16) and a support bar (17). The support bar (17) is vertically fixed to the side wall of the transformer box body (1). The copper sheet (16) is fixedly connected to the support bar (17).

9. A moisture-proof transformer box according to claim 8, characterized in that, The support bar (17) is a support bar supported by metal material. Both ends of the support bar (17) are welded to the inner wall of the transformer box body (1). An insulating pad (18) is provided between the support bar (17) and the copper sheet (16). The copper sheet (16) is connected to the insulating pad (18) by a first fixing nail (19). The insulating pad (18) is connected to the support bar (17) by a second fixing nail (20).

10. A moisture-proof transformer box according to claim 8, characterized in that, The copper sheet (16) is fixed inside the insulating frame (21), and the insulating frame (21) abuts against the inner wall of the transformer box body (1).

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