A transformer air-cooling device

Abstract

This utility model provides a transformer air-cooling device, belonging to the field of transformer technology; it includes: a transformer body, with horizontal air-cooling structures installed on the front and rear walls of the transformer body, and a vertical air-cooling power structure installed on the upper wall of the horizontal air-cooling structures; the two sets of horizontal air-cooling structures include: several horizontal heat sinks, several horizontal heat transfer pipes, and two horizontal air collection hoppers; this device cools existing transformers through both active and passive methods. Passive enhanced heat dissipation does not require external energy and achieves enhanced heat dissipation by passively increasing the air velocity flowing through the transformer heat sinks; at the same time, active enhanced heat dissipation is set up. When the transformer oil temperature reaches a threshold, active heat dissipation is activated to compensate for the shortcomings of passive enhanced heat dissipation, which requires specific airflow direction, and ensure that the transformer operates at normal temperature.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology, specifically relating to an air-cooling device for transformers. Background Technology

[0002] A transformer is a static electrical device that uses the principle of electromagnetic induction to convert electrical energy. Through the magnetic coupling between the primary and secondary coils wound on the iron core, it converts the input AC voltage and current into an output with the same frequency but different voltage / current levels, while maintaining basic power conservation. It also has functions such as impedance transformation, electrical isolation, and energy transfer, and is widely used in power transmission, electronic equipment, industrial control, and communication systems.

[0003] To provide a more stable working environment for transformers, a wind-cooled spray device for transformer cooling, with announcement number CN217114066U, is described. In this technical solution, when the real-time oil temperature inside the transformer reaches a first oil temperature threshold, the controller activates a solenoid valve, and a booster pump sprays water from the water tank onto the fan blades through nozzles. This effectively reduces the temperature of the flowing air, meaning the airflow blowing onto the transformer's heat sink is cooler, thus improving cooling efficiency and rapidly cooling the upper layer of oil in the transformer. However, while this solution reduces the temperature to some extent by spraying water onto the blades, it also increases the load on the motor driving the blades, reducing the motor's normal operating speed. Although it lowers the temperature of the blowing air to some extent, it also reduces the airflow speed, thus the active cooling effect does not meet the desired requirement. Utility Model Content

[0004] To address the issue that the active cooling effect in the existing technology does not meet the requirements, this utility model provides a transformer air-cooling device that uses both active and passive methods to cool existing transformers. The passive cooling enhances heat dissipation without requiring external energy by passively increasing the air velocity flowing through the transformer's heat sink, thereby enhancing the heat dissipation effect. The specific technical solution is as follows: A transformer air-cooling device includes: a transformer body; horizontal air-cooling structures are installed on the front and rear walls of the transformer body, and a vertical air-cooling power structure is installed on the upper wall of the horizontal air-cooling structures; the two sets of horizontal air-cooling structures include: several horizontal heat sinks, several horizontal heat transfer pipes, and two horizontal air collection hoppers; the several horizontal heat sinks are respectively installed on the front wall of the transformer body, and the several horizontal heat sinks have several mounting holes; the several horizontal heat transfer pipes pass horizontally through the mounting holes of the several horizontal heat sinks; the two horizontal air collection hoppers are installed on the outer wall of the outer horizontal heat sinks, and the two horizontal air collection hoppers surround the inlet and outlet of the several horizontal heat transfer pipes.

[0005] Preferably, the vertical air-cooled power structure includes: an air-cooled support frame and four air-cooled power structures; the air-cooled support frame is fixedly installed on the upper wall of the horizontal heat sink by bolts, and the four air-cooled power structures are respectively installed inside the air-cooled support frame.

[0006] Preferably, the four sets of air-cooled power structures include: an air-cooled power base, an air-cooled motor, and air-cooled fan blades; the air-cooled power base is fixedly installed inside the air-cooled support frame, the air-cooled power base has ventilation holes, the air-cooled motor is mounted on the upper wall of the air-cooled power base through a motor frame, and the drive end of the air-cooled motor extends into the ventilation hole of the air-cooled power base, the air-cooled fan blades are installed on the drive end of the air-cooled motor, and the air-cooled fan blades are located in the ventilation hole of the air-cooled power base.

[0007] Preferably, there is a gap between the air-cooled fan blade and the inner wall of the ventilation hole of the air-cooled power base, so that the air-cooled fan blade will not scrape against the air-cooled power base when it rotates.

[0008] Preferably, a number of side heat dissipation fins are installed on the left and right side walls of the transformer body.

[0009] Preferably, the lower wall of the transformer body is provided with an insulating support.

[0010] Preferably, an extended heat sink is installed on the outer wall surface of one or more of the horizontal heat sinks.

[0011] Preferably, the air-cooled motor is a waterproof, sealed motor.

[0012] The present invention discloses a transformer air-cooling device, which has the following advantages compared with the prior art: the transformer air-cooling device cools the existing transformer through both active and passive methods. The passive enhanced heat dissipation does not require external energy and achieves the effect of enhanced heat dissipation by passively increasing the air velocity flowing through the transformer heat sink; at the same time, the active enhanced heat dissipation is set up. When the transformer oil temperature reaches the threshold, the active heat dissipation works to compensate for the disadvantage of passive enhanced heat dissipation being subject to airflow direction requirements, and ensures that the transformer operates at normal temperature. Attached Figure Description

[0013] Figure 1 A schematic diagram of the first overall structure of the air-cooled device for transformers provided by this utility model; Figure 2 A schematic diagram of the second overall structure of the air-cooled device for transformers provided by this utility model; Figure 3 A partial structural diagram of the air-cooled device for transformers provided by this utility model; Figure 4 An exploded view of the second partial structure of the air-cooled device for transformers provided by this utility model; in, Figures 1 to 4 The reference numerals and components for the transformer air-cooling device in the attached drawings are as follows: 1. Transformer body; 2. Horizontal heat sink; 3. Horizontal heat transfer pipe; 4. Horizontal air collection hopper; 5. Air-cooled support frame; 6. Air-cooled power base; 7. Air-cooled motor; 8. Air-cooled fan blades; 9. Side heat sink fins; 10. Insulating support; 11. Extended heat sink. Detailed Implementation

[0014] The following are specific implementation cases and appendices. Figures 1-4 The present invention will be further described, but it is not limited to these embodiments. The present invention provides a technical solution: a transformer air-cooling device, comprising: a transformer body 1, with a horizontal air-cooling structure installed on the front and rear walls of the transformer body 1, and a vertical air-cooling power structure installed on the upper wall of the horizontal air-cooling structure; the two sets of horizontal air-cooling structures include: a plurality of horizontal heat sinks 2, a plurality of horizontal heat transfer pipes 3, and two horizontal air collection buckets 4; the plurality of horizontal heat sinks 2 are respectively installed on the front wall of the transformer body 1, the plurality of horizontal heat sinks 2 have a plurality of mounting holes, the plurality of horizontal heat transfer pipes 3 pass horizontally through the mounting holes of the plurality of horizontal heat sinks 2, the two horizontal air collection buckets 4 are installed on the outer wall of the outer horizontal heat sinks 2, the two horizontal air collection buckets 4 surround the inlet and outlet of the plurality of horizontal heat transfer pipes 3, the left and right side walls of the transformer body 1 are respectively installed with a plurality of side heat sinks 9, the lower wall of the transformer body 1 is provided with an insulating support 10, and the outer wall of the plurality of horizontal heat sinks 2 is installed with an extended heat sink 11.

[0015] As a preferred option, the vertical air-cooled power structure further includes: an air-cooled support frame 5 and four air-cooled power structures; the air-cooled support frame 5 is fixedly installed on the upper wall of the horizontal heat sink 2 by bolts, and the four air-cooled power structures are respectively installed inside the air-cooled support frame 5.

[0016] As a preferred option, the four sets of air-cooled power structures further include: an air-cooled power base 6, an air-cooled motor 7, and an air-cooled fan blade 8; the air-cooled power base 6 is fixedly installed inside the air-cooled support frame 5, and the air-cooled power base 6 has ventilation holes; the air-cooled motor 7 is installed on the upper wall of the air-cooled power base 6 through a motor bracket, and the drive end of the air-cooled motor 7 extends into the ventilation hole of the air-cooled power base 6; the air-cooled fan blade 8 is installed on the drive end of the air-cooled motor 7, and the air-cooled fan blade 8 is located in the ventilation hole of the air-cooled power base 6; there is a gap between the air-cooled fan blade 8 and the inner wall of the ventilation hole of the air-cooled power base 6, so that the air-cooled fan blade 8 will not scrape against the air-cooled power base 6 when it rotates; the air-cooled motor 7 is a waterproof sealed motor.

[0017] Working principle: According to the installation requirements of the transformer body 1, the operator installs the insulating support 10 at the height and position that meets the installation requirements of the transformer body 1; then the operator connects the external power supply that needs to be transformed to the transformer body 1. Next, the operator connects the external power supply to the air-cooled motor 7 to provide energy for the operation of the air-cooled motor 7, and connects the matching controller to the air-cooled motor 7 to provide control and operating logic for the operation of the air-cooled motor 7.

[0018] When the transformer body 1 starts working, it generates a large amount of heat. This heat is transferred to the horizontal heat sinks 2 and several side heat sinks 9, where the side heat sinks 9 dissipate the heat generated by the transformer body 1 through passive cooling. The heat from the horizontal heat sinks 2 is transferred to several horizontal heat transfer pipes 3 and extended heat sinks 11, where it is also dissipated passively. To improve the cooling effect, passive accelerated cooling and active cooling are added.

[0019] Passive accelerated cooling involves collecting natural wind. When wind blows from the side, it is collected by the transverse wind collection hopper 4. Simultaneously, the transverse wind enters several transverse heat transfer pipes 3 from the transverse wind collection hopper 4 and is then blown out. According to the Venturi effect, the transverse wind duct enters several transverse heat transfer pipes 3 with smaller cross-sectional areas from the transverse wind collection hopper 4 with larger cross-sectional areas, increasing the wind speed and thus improving the heat dissipation effect.

[0020] Active cooling involves starting the air-cooled motor 7. When the transformer oil temperature reaches the threshold for active cooling, the rotation of the air-cooled motor 7 drives the air-cooled fan blades 8 to rotate, thereby generating active high-speed airflow. The high-speed airflow passes through the outside of several horizontal heat sinks 2, which can reduce the temperature of the horizontal heat sinks 2 and enhance the heat dissipation effect of the horizontal heat sinks 2.

[0021] By using different air-cooling methods, the heat dissipation effect of the transformer body 1 can be enhanced, thereby ensuring the safe operation of the transformer body 1.

[0022] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not 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. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transformer air-cooling device, comprising: The transformer body (1) is characterized in that the front and rear walls of the transformer body (1) are respectively equipped with a horizontal air-cooling structure, and the upper wall of the horizontal air-cooling structure is equipped with a vertical air-cooling power structure; the two sets of the horizontal air-cooling structures include: a plurality of horizontal heat sinks (2), a plurality of horizontal heat transfer pipes (3) and two horizontal air collection buckets (4); the plurality of horizontal heat sinks (2) are respectively installed on the front wall of the transformer body (1), the plurality of horizontal heat sinks (2) are provided with a plurality of mounting holes, the plurality of horizontal heat transfer pipes (3) pass horizontally through the mounting holes of the plurality of horizontal heat sinks (2), the two horizontal air collection buckets (4) are installed on the outer wall of the horizontal heat sinks (2) located on the outside, and the two horizontal air collection buckets (4) surround the inlet and outlet of the plurality of horizontal heat transfer pipes (3).

2. The air-cooled device for transformers according to claim 1, characterized in that, The vertical air-cooled power structure includes: an air-cooled support frame (5) and four air-cooled power structures; the air-cooled support frame (5) is fixedly installed on the upper wall of the horizontal heat sink (2) by bolts, and the four air-cooled power structures are respectively installed inside the air-cooled support frame (5).

3. The air-cooled device for transformers according to claim 2, characterized in that, The four sets of air-cooled power structures include: air-cooled power base (6), air-cooled motor (7), and air-cooled fan blades (8); the air-cooled power base (6) is fixedly installed inside the air-cooled support frame (5), the air-cooled power base (6) has ventilation holes, the air-cooled motor (7) is installed on the upper wall of the air-cooled power base (6) through a motor frame, and the drive end of the air-cooled motor (7) extends into the ventilation hole of the air-cooled power base (6), the air-cooled fan blades (8) are installed on the drive end of the air-cooled motor (7), and the air-cooled fan blades (8) are located in the ventilation hole of the air-cooled power base (6).

4. The air-cooled device for transformers according to claim 3, characterized in that, There is a gap between the air-cooled fan blade (8) and the inner wall of the ventilation hole of the air-cooled power base (6), so that the air-cooled fan blade (8) will not scrape against the air-cooled power base (6) when it rotates.

5. The air-cooled device for transformers according to claim 1, characterized in that, The transformer body (1) has several side heat dissipation fins (9) installed on its left and right side walls respectively.

6. The air-cooled device for transformers according to claim 1, characterized in that, The lower wall of the transformer body (1) is provided with an insulating support (10).

7. The air-cooled device for transformers according to claim 1, characterized in that, Extended heat sinks (11) are installed on the outer wall surface of several of the horizontal heat sinks (2).

8. The air-cooled device for transformers according to claim 3, characterized in that, The air-cooled motor (7) is a waterproof, sealed motor.

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