Heat dissipation structure of dry-type transformer

Abstract

The utility model discloses a heat dissipation structure of a dry-type transformer, which relates to the field of dry-type transformers and comprises a ventilation bin, the ventilation bin is arranged at the top of a base of the dry-type transformer, the ventilation bin is sleeved outside coil cushion blocks of three dry-type transformers, and the ventilation bin is used for guiding airflow of a fan to the outer sides of coils of the dry-type transformers. The ventilation bin is arranged on the top of the dry-type transformer base, the ventilation bin comprises an upper sleeve shell and a lower sleeve shell, the upper sleeve shell and the lower sleeve shell are symmetrically arranged up and down, and the bottom of the upper sleeve shell is inserted into the lower sleeve shell in a sliding fit mode. The structure can effectively guide airflow to the outer side of each dry-type transformer coil, so that the heat dissipation efficiency is remarkably improved. By means of the design, it is guaranteed that the coil can be evenly cooled, the local overheating phenomenon is effectively prevented, and stable operation of the transformer is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of dry transformers, in particular to a heat dissipation structure of a dry transformer. Background Art

[0002] The traditional heat dissipation structure of dry transformers mainly relies on fans for forced ventilation and heat dissipation. However, in actual applications, the air generated by the fans cannot flow evenly around the coils. Instead, it often forms a strong air current only in specific areas, while the air current is weak in other areas, resulting in uneven heat dissipation. Moreover, the upward space of the air current of the fans is limited. Especially in the top area of the coils, due to structural limitations, it is difficult for the air current generated by the fans to directly reach the top of the coils, resulting in less air current contacting the top of the coils and poor heat dissipation effect. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a heat dissipation structure of a dry transformer, and solve the following technical problems: how to achieve uniform distribution of air current and efficient heat dissipation, and how to enhance the heat dissipation effect at the top of the coils.

[0004] In order to solve the problems existing in the prior art, the technical solution adopted by the utility model is as follows:

[0005] A heat dissipation structure of a dry transformer includes a ventilation chamber, which is arranged on the top of the base of the dry transformer, and the ventilation chamber is sleeved outside the coil pads of three dry transformers. The ventilation chamber is used to direct the air current of the fan to the outside of each dry transformer coil. The ventilation chamber includes an upper housing and a lower housing, the upper housing and the lower housing are symmetrically arranged up and down, and the bottom of the upper housing is slidably and fittingly inserted into the inside of the lower housing. The ventilation chamber further includes air guiding nozzles and plug rods. The air guiding nozzles are equidistantly arranged on the top of the upper housing, and the plug rods are fixedly connected equidistantly inside the lower housing, and the plug rods and the air guiding nozzles correspond one by one, and the top of the plug rod is inserted into the corresponding air guiding nozzle;

[0006] Preferably, air guiding cavities are equidistantly arranged on both sides of the bottom of the ventilation chamber, and the bottom of the air guiding cavity is connected to the air outlet of the corresponding fan.

[0007] Preferably, springs are equidistantly arranged between the upper housing and the lower housing of the ventilation chamber, and the upper housing is elastically connected to the lower housing through the springs.

[0008] Preferably, the springs are naturally compressed under the gravity of the lower housing and are in an elastic compression energy storage state.

[0009] Preferably, the air guiding nozzles are arranged in a frustum-shaped hollow shape, the upper part of the plug rod is arranged in a frustum shape, and there is a gap between the plug rod and the frustum.

[0010] Preferably, a sealing strip is arranged at the bottom of the upper housing.

[0011] Preferably, the four corners of the ventilation chamber are arranged in an arc shape.

[0012] Compared with the related art, the utility model has the following beneficial effects:

[0013] Through the ventilation chamber arranged on the top of the dry-type transformer base and in cooperation with the use of a fan, this structure can effectively direct the airflow to the outside of each dry-type transformer coil, thus significantly improving the heat dissipation efficiency. This design ensures that the coils can be evenly cooled, effectively preventing the occurrence of local overheating, ensuring the stable operation of the transformer. The spring connection between the upper housing and the lower housing allows the ventilation chamber to be adaptively adjusted according to the airflow intensity generated by the fan. When the airflow is weak, the compression degree of the spring is small, and the gap between the air guide nozzle and the plug rod is small, so that the airflow can obtain a higher flow rate when passing through and can flow to a higher position on the coil surface. When the airflow is strong, the spring is further compressed, the gap increases, allowing more airflow to pass through, forming a wider and more uniform airflow distribution. This adjustable heat dissipation effect enables the heat dissipation structure to adapt to different working environments and heat dissipation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 is a schematic diagram of the bottom structure of the ventilation chamber of the utility model;

[0016] Figure 3 is a schematic diagram of the upper housing structure of the utility model;

[0017] Figure 4 is a schematic diagram of the lower housing structure of the utility model;

[0018] Figure 5 is a sectional view of the structure of the ventilation chamber of the utility model.

[0019] Reference numerals: 1, ventilation chamber; 11, upper housing; 12, lower housing; 13, air guide nozzle; 14, plug rod; 15, air guide cavity; 16, spring; 17, sealing strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the following further describes the utility model in detail with reference to the drawings and embodiments.

[0021] The dry-type transformer heat dissipation structure has a ventilation chamber 1;

[0022] Such as Figures 1 to 5As shown, the ventilation chamber 1 is arranged on the top of the base of the dry-type transformer, and the ventilation chamber 1 is sleeved on the outside of the coil pads of the three dry-type transformers. Such a position selection is conducive to the airflow rising from the bottom and directly acting on the coil part of the transformer. The ventilation chamber 1 is used to guide the airflow of the fan to the outside of each dry-type transformer coil. It can cover and act on the heat dissipation area of ​​multiple transformers, and increase the air flow on the surface of the coil to take away the heat, thereby achieving a cooling effect and improving the heat dissipation efficiency. The ventilation chamber 1 includes an upper shell 11 and a lower shell 12. The upper shell 11 and the lower shell 12 are symmetrically arranged up and down, and the bottom of the upper shell 11 is slidably fitted and plugged into the lower shell 12. This connection method allows the two to be connected in When subjected to external force, the ventilation chamber 1 moves relatively to adapt to different working conditions. The ventilation chamber 1 also includes an air guide nozzle 13 and a plug rod 14. The air guide nozzles 13 are equidistantly arranged on the top of the upper shell 11. These air guide nozzles 13 are the outlets of the airflow. The lower shell 12 is equidistantly fixedly connected with the plug rod 14 inside, and the plug rod 14 corresponds to the air guide nozzle 13 one by one. The top end of the plug rod 14 is inserted into the corresponding air guide nozzle 13. The plug rod 14 and the air guide nozzle 13 form a gap. These gaps are channels for the airflow to pass through. When the fan power changes, the size of the gap between the plug rod 14 and the air guide nozzle 13 will change accordingly, thereby affecting the flow rate and distribution of the airflow. This design enables the ventilation chamber 1 to adaptively adjust the heat dissipation effect according to different working conditions.

[0023] like Figures 1 to 5 As shown, air guide cavities 15 are equidistantly arranged on both sides of the bottom of the ventilation chamber 1, and the bottom of the air guide cavity 15 is connected to the air outlet of the corresponding fan, ensuring that the airflow generated by the fan can directly and effectively enter the interior of the ventilation chamber 1, avoiding waste and loss of airflow, and because the air guide cavities 15 are equidistantly arranged, they can evenly distribute the airflow to various parts of the ventilation chamber 1, ensuring that each coil of the dry-type transformer can obtain sufficient airflow cooling, and this evenly distributed airflow helps to improve the heat dissipation efficiency and prevent the occurrence of local overheating;

[0024] like Figures 1 to 5 As shown, springs 16 are equidistantly provided between the upper shell 11 and the lower shell 12 of the ventilation bin 1, and the upper shell 11 is elastically connected to the lower shell 12 through the springs 16. This connection method allows the two to move relative to each other when subjected to external force to adapt to different working conditions or environmental changes. Specifically, when the fan power changes, the intensity of the airflow generated will also change accordingly. A weaker airflow is not enough to completely open the distance between the upper shell 11 and the lower shell 12, while a stronger airflow can increase the distance between the two. The elastic characteristics of the spring 16 can ensure that a certain distance is maintained between the upper shell 11 and the lower shell 12, and automatically adjust the distance according to the strength of the airflow.

[0025] like Figures 1 to 5As shown, the spring 16 is naturally compressed under the gravity of the lower housing 12 and is in an elastic compression energy storage state. This elastic compression energy storage state means that the spring 16 stores potential energy. Once subjected to an external force, such as the airflow generated by the fan, the spring 16 can release this energy and push the upper housing 11 to move relative to the lower housing 12. This movement can change the distance between the upper housing 11 and the lower housing 12, thereby adjusting the gap size between the air guide nozzle 13 and the plug rod 14 to meet different heat dissipation requirements.

[0026] As Figures 1 to 5 shown, the air guide nozzle 13 is provided in a frustum-shaped hollow structure. The upper part of the plug rod 14 is provided in a frustum shape, and there is a gap between the plug rod 14 and the frustum. The frustum shape of the air guide nozzle 13 can gradually reduce the cross-sectional area of the airflow, thereby increasing the flow rate of the airflow, ensuring that the airflow has a higher speed when ejected, and can cover a higher position outside the coil, effectively taking away heat. The frustum shape of the plug rod 14 can match the frustum shape of the air guide nozzle 13 to form a stable airflow channel, ensuring that the airflow can pass through smoothly.

[0027] As Figure 5 shown, a sealing strip 17 is provided at the bottom of the upper housing 11 to ensure a certain degree of sealing and stability between the upper housing 11 and the lower housing 12 during relative movement.

[0028] As Figures 1 to 5 shown, the four corners of the ventilation chamber 1 are provided in an arc shape, fitting the shape of the coil to make the airflow distribution at the four corners more uniform.

[0029] The working principle of the dry-type transformer heat dissipation structure provided by the present utility model is as follows: When the power of the fan is small, the generated airflow is relatively weak. At this time, since there is a spring 16 between the upper housing 11 and the lower housing 12 in the ventilation chamber 1, the upper housing 11 maintains a small distance from the lower housing 12 under the natural compression of the spring 16. This small distance makes the gap between the plug rod 14 and the air guide nozzle 13 relatively small. Although the airflow entering the ventilation chamber 1 is limited, due to the narrow channel formed between the air guide nozzle 13 and the plug rod 14, the airflow will obtain a higher flow rate when ejected. This high-speed airflow can accurately spray to the outside of the dry-type transformer coil, especially the higher part of the coil, effectively taking away heat;

[0030] However, when the power of the fan increases, the air flow intensity also increases accordingly. After this increased air flow enters the ventilation chamber 1, it will generate a greater thrust on the upper casing 11, causing the upper casing 11 to move upward relative to the lower casing 12, thereby increasing the distance between the two. At the same time, the gap between the plug rod 14 and the air guide nozzle 13 will also widen as the distance increases. This widened gap allows more air flow to be ejected from the air guide nozzle 13, forming a more extensive and uniform air flow distribution. Such an air flow distribution can better cover the coil surface of the dry-type transformer, improving the efficiency and uniformity of heat dissipation, and ensuring that the dry-type transformer can maintain good heat dissipation performance even under higher loads.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry-type transformer heat dissipation structure, characterized in that, Comprising: A ventilation chamber (1), the ventilation chamber (1) is arranged on the top of the base of the dry-type transformer, and the ventilation chamber (1) is sleeved outside the coil pads of three dry-type transformers. The ventilation chamber (1) is used to direct the air flow of the fan to the outside of each dry-type transformer coil. The ventilation chamber (1) includes an upper housing (11) and a lower housing (12). The upper housing (11) and the lower housing (12) are symmetrically arranged up and down, and the bottom of the upper housing (11) is slidably and fittingly inserted into the inside of the lower housing (12). The ventilation chamber (1) further includes air guide nozzles (13) and plug rods (14). The air guide nozzles (13) are equidistantly arranged on the top of the upper housing (11). The plug rods (14) are fixedly connected equidistantly inside the lower housing (12), and the plug rods (14) and the air guide nozzles (13) are in one-to-one correspondence. The top of the plug rod (14) is inserted into the corresponding air guide nozzle (13).

2. The dry-type transformer heat dissipation structure according to claim 1, characterized in that, On both sides of the bottom of the ventilation chamber (1), air guide cavities (15) are equidistantly arranged, and the bottom of the air guide cavity (15) is connected to the air outlet of the corresponding fan.

3. The dry-type transformer heat dissipation structure according to claim 1, characterized in that, Springs (16) are equidistantly arranged between the upper housing (11) and the lower housing (12) of the ventilation chamber (1), and the upper housing (11) is elastically connected to the lower housing (12) through the springs (16).

4. The dry-type transformer heat dissipation structure according to claim 3, characterized in that, The spring (16) is naturally compressed under the gravity of the lower housing (12) and is in an elastic compression and energy storage state.

5. The dry-type transformer heat dissipation structure according to claim 1, characterized in that, The air guide nozzle (13) is arranged in a frustum-shaped hollow shape, the upper part of the plug rod (14) is arranged in a frustum shape, and there is a gap between the plug rod (14) and the frustum.

6. The dry-type transformer heat dissipation structure according to claim 1, characterized in that A sealing strip (17) is arranged at the bottom of the upper housing (11).

7. The dry-type transformer heat dissipation structure according to claim 1, characterized in that, The four corners of the ventilation chamber (1) are arranged in an arc shape.

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