Heat dissipation device of power transformer

Abstract

The utility model discloses a power transformer radiating device, which relates to the field of power transformer radiating devices and comprises a transformer casing, a plurality of radiating fins are fixed on two sides of the transformer casing and are equidistantly distributed along the length direction of the transformer casing, and a gap is reserved between two adjacent radiating fins. A plurality of radiating fins are arranged in the transformer shell, connecting pipes are arranged among the radiating fins in a penetrating mode, a fixing box is fixed on the side face of one radiating fin on the outermost side, and a fan is fixed in the fixing box. Wind power generated by the fan can enter the cavities of the cooling fins through the connecting pipes, when heat is transmitted to the cooling fins, discharge of the heat on the cooling fins can be accelerated through the effect of the wind power, the cooling efficiency is improved, the multiple cooling fins can be cooled at the same time at a time, and redundant wind power can be discharged from the bottom exhaust port.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation devices for power transformers, and in particular to a heat dissipation device for power transformers. Background Technology

[0002] A power transformer is a static electrical device used to convert an alternating voltage (current) of a certain value into one or more different voltages (currents) at the same frequency. It is a static device with two or more windings that, in order to transmit electrical energy, converts the alternating voltage and current of one system into the voltage and current of another system through electromagnetic induction at the same frequency.

[0003] Power transformers are generally equipped with heat sinks on the outside to dissipate heat. However, the heat dissipation efficiency of the heat sinks is limited. When the temperature is high, the heat sinks have difficulty dissipating heat quickly.

[0004] Therefore, it is necessary to propose a heat dissipation device for power transformers to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a heat dissipation device for power transformers, in order to solve the problem that power transformers are generally equipped with heat sinks on the outside for heat dissipation, but the heat dissipation efficiency of the heat sinks is limited, and when the temperature is high, the heat sinks have difficulty in quickly dissipating heat.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a power transformer heat dissipation device, comprising a transformer shell, multiple heat dissipation fins fixed on both sides of the transformer shell, the multiple heat dissipation fins being evenly distributed along the length direction of the transformer shell, and a gap being left between two adjacent heat dissipation fins, a connecting pipe being provided through the multiple heat dissipation fins, a fixing box being fixed on the side of one of the outermost heat dissipation fins, a fan being fixed inside the fixing box, and the air outlet of the fan being connected to one end of the connecting pipe;

[0007] Each heat sink has an internal cavity, and the lower surface of the connecting pipe has multiple exhaust holes that are connected to the corresponding cavities. The bottom of the heat sink has a bottom exhaust port that is connected to the interior of the corresponding cavity.

[0008] Preferably, each of the multiple heat sinks has a through hole for the connecting pipe to pass through, and the connecting pipe has a protruding end on its outer side.

[0009] Preferably, the inner wall of the cavity is fixed with a first hemisphere and a second hemisphere, and multiple first hemispheres and second hemispheres are provided, and the first hemispheres and second hemispheres are arranged alternately.

[0010] Preferably, the fixing box has an opening on the side away from the heat sink, and the opening is connected to the inside of the fixing box, and a filter screen is provided inside the opening.

[0011] Preferably, support legs are provided at all four corners of the bottom of the transformer casing.

[0012] Preferably, the protruding end is hemispherical, and there are multiple protruding ends distributed along the length of the connecting pipe, with each protruding end positioned between two adjacent heat sinks.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. In the actual operation of this utility model, when the heat generated by the internal components of the transformer casing is high, the fan can be started. The air force generated by the fan can enter the cavity of multiple heat sinks through the connecting pipe. When the heat is transferred to the heat sink, the air force can accelerate the heat dissipation on the heat sink, improve the heat dissipation efficiency, and can dissipate heat to multiple heat sinks at the same time. Excess air force will be discharged from the bottom exhaust port.

[0015] 2. Furthermore, the connecting pipe can connect multiple heat sinks together, increasing the structural strength of the heat sinks without affecting their own heat dissipation. This extends the lifespan of the heat sinks in extreme weather conditions. Also, when the temperature of a heat sink in a certain area is high, the connecting pipe can distribute the heat to the remaining heat sinks, improving efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the heat dissipation device for the power transformer of this utility model.

[0017] Figure 2 This is a schematic diagram of the connecting pipe of this utility model.

[0018] Figure 3 This is a schematic diagram of the cavity and bottom exhaust port of this utility model.

[0019] Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Transformer casing; 2. Heat sink; 3. Fixing box; 4. Filter screen; 5. Connecting pipe; 6. Through hole; 7. Vent hole; 8. Cavity; 9. Bottom exhaust port; 10. First hemisphere; 11. Second hemisphere; 12. Protruding end. Detailed Implementation

[0021] This utility model provides, for example Figures 1-4The power transformer heat dissipation device shown includes a transformer shell 1, with multiple heat sinks 2 fixed on both sides of the transformer shell 1. The multiple heat sinks 2 are evenly distributed along the length of the transformer shell 1, and there is a gap between two adjacent heat sinks 2. When the internal components of the transformer shell 1 generate heat during operation, the heat can be dissipated through the multiple heat sinks 2 on both sides, thus achieving the heat dissipation function.

[0022] A connecting pipe 5 is installed between multiple heat sinks 2. A fixing box 3 is fixed to the side of one of the outermost heat sinks 2. A fan is fixed inside the fixing box 3. The air outlet of the fan is connected to one end of the connecting pipe 5. A cavity 8 is opened inside each of the heat sinks 2. Multiple exhaust holes 7 are opened on the lower surface of the connecting pipe 5. The exhaust holes 7 are connected to the corresponding cavities 8. A bottom exhaust port 9 is opened at the bottom of the heat sink 2. The bottom exhaust port 9 is connected to the interior of the corresponding cavity 8.

[0023] The mounting box 3 has an opening on the side away from the heat sink 2, and the opening is connected to the inside of the mounting box 3. A filter screen 4 is installed inside the opening to prevent external dust from entering the interior of the mounting box 3.

[0024] In the actual operation of this utility model, when the heat generated by the internal components of the transformer housing 1 is high, the fan can be started. The air force generated by the fan can enter the cavity 8 of multiple heat sinks 2 through the connecting pipe 5. When the heat is transferred to the heat sink 2, the heat on the heat sink 2 can be discharged faster by the action of the air force, thereby improving the heat dissipation efficiency. Moreover, multiple heat sinks 2 can be cooled at the same time. Excess air force will be discharged from the bottom exhaust port 9.

[0025] Furthermore, the connecting pipe 5 can connect multiple heat sinks 2 together, which can increase the structural strength of multiple heat sinks 2 without affecting the heat dissipation of the heat sinks 2 themselves. In extreme weather conditions, it can improve the service life of the heat sinks 2. When the temperature of a heat sink 2 in a certain area is high, the heat can be distributed to the other heat sinks 2 through the connecting pipe 5, thereby improving efficiency.

[0026] Multiple heat sinks 2 are provided with through holes 6 for connecting pipes 5 to pass through, and the outer side of the connecting pipes 5 is provided with protruding ends 12.

[0027] The inner wall of the cavity 8 is fixed with a first hemisphere 10 and a second hemisphere 11 respectively. Multiple first hemispheres 10 and second hemispheres 11 are provided, and the first hemispheres 10 and second hemispheres 11 are staggered. After the wind passes through the cavity 8, it is blocked by the first hemispheres 10 and second hemispheres 11, which can increase the contact area of ​​the wind and improve the heat dissipation efficiency.

[0028] Support legs are provided at the four corners of the bottom of the transformer casing 1. The protruding end 12 is hemispherical and there are multiple protruding ends 12. The multiple protruding ends 12 are distributed along the length of the connecting pipe 5, and each protruding end 12 is located between two adjacent heat sinks 2 to increase the contact area with the outside air.

Claims

1. A heat dissipation device for a power transformer, comprising a transformer casing (1), characterized in that: Multiple heat sinks (2) are fixed on both sides of the transformer shell (1). The multiple heat sinks (2) are evenly distributed along the length of the transformer shell (1), and there is a gap between two adjacent heat sinks (2). A connecting pipe (5) is installed through the multiple heat sinks (2). A fixing box (3) is fixed on the side of one of the outermost heat sinks (2). A fan is fixed inside the fixing box (3). The air outlet of the fan is connected to one end of the connecting pipe (5). Multiple heat sinks (2) each have a cavity (8) inside. Multiple exhaust holes (7) are provided on the lower surface of the connecting pipe (5). The exhaust holes (7) are connected to the corresponding cavities (8). A bottom exhaust port (9) is provided at the bottom end of the heat sink (2). The bottom exhaust port (9) is connected to the corresponding cavity (8).

2. The heat dissipation device for a power transformer according to claim 1, characterized in that: Multiple heat sinks (2) are provided with through holes (6) for the connecting pipe (5) to pass through, and the connecting pipe (5) has a protruding end (12) on its outer side.

3. The heat dissipation device for a power transformer according to claim 1, characterized in that: The inner wall of the cavity (8) is fixed with a first hemisphere (10) and a second hemisphere (11), and there are multiple first hemispheres (10) and second hemispheres (11), and the first hemispheres (10) and second hemispheres (11) are arranged alternately.

4. The heat dissipation device for a power transformer according to claim 1, characterized in that: The fixing box (3) has an opening on the side away from the heat sink (2), and the opening is connected to the inside of the fixing box (3). A filter screen (4) is provided inside the opening.

5. A heat dissipation device for a power transformer according to claim 1, characterized in that: The transformer casing (1) is provided with support legs at the four corners of its bottom.

6. A heat dissipation device for a power transformer according to claim 2, characterized in that: The protruding end (12) is set to be hemispherical, and there are multiple protruding ends (12). The multiple protruding ends (12) are distributed along the length direction of the connecting pipe (5), and a single protruding end (12) is set between two adjacent heat sinks (2).

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