A perforated ventilated heat sink for a transformer

Abstract

This invention relates to the field of transformer heat dissipation technology and provides a perforated radiator for transformers. The through holes on each radiator are staggered, increasing the distance and time for cold air to flow between the radiators. This allows the cold air to affect a larger area of ​​the space between the radiators, improving heat dissipation. Furthermore, air vents that can rotate left and right and up and down are provided on each through hole. The opening angle of the air vents at the same location on adjacent radiators, as well as at different locations on the same radiator, can be adjusted to different angles. This guides the cooling air to flow in multiple S-shaped patterns between the radiators, both horizontally and vertically, and even in overlapping patterns. This allows the cold air to fully dissipate heat between the radiators, further enhancing heat dissipation.

Description

Technical Field

[0001] This invention belongs to the field of transformer heat dissipation technology, and particularly relates to a heat sink with perforated ventilation for transformers. Background Technology

[0002] A plate radiator is a heat exchange device used on oil-immersed transformers. A conventional plate radiator is welded together from upper and lower oil collection pipes and multiple sets of heat dissipation fins. The upper oil collection pipe channel is located in the middle of the upper end of the heat dissipation fins, and the lower oil collection pipe channel is located in the middle of the lower end of the heat dissipation fins.

[0003] Because the heat sinks are spaced at equal intervals and have a large surface area, when the wind blows along the direction perpendicular to the heat sinks, the air blowing from the sides onto the middle heat sink is blocked by the outermost heat sink, which affects its cooling effect. Summary of the Invention

[0004] The present invention provides a perforated ventilated heat sink for transformers, which aims to solve the problems mentioned in the background art.

[0005] The present invention is implemented as follows: a ventilated heat sink for a transformer includes an oil inlet pipe at the top, an oil outlet pipe at the bottom, and multiple sets of heat sinks connecting the oil inlet pipe and the oil outlet pipe. The heat sink is formed by welding two plates together, and multiple sets of oil channels are arranged at equal intervals inside the heat sink. Through holes are opened between adjacent oil channels on the heat sink to introduce cold air between the heat sinks.

[0006] Preferably, the two plates are exactly the same and are joined together to form the heat sink. Each plate includes an upper flow distribution section, a lower flow convergence section, and various oil passages between them.

[0007] The through holes on each heat sink are arranged in a strip shape, and the through holes at the same position between two adjacent heat sinks are staggered.

[0008] A detachable air intake window is provided in the through hole, which is used to adjust the air direction in the vertical or horizontal direction.

[0009] The air intake window includes an outer shell installed in the through hole, an inner shell that can rotate up and down is provided inside the outer shell, and blades that can rotate left and right are provided inside the inner shell.

[0010] The upper and lower ends of the two plates are both set with semi-circular grooves, and the oil inlet pipe and the oil outlet pipe are inserted and fixed into the grooves. The surfaces of the oil inlet pipe and the oil outlet pipe are provided with several holes that are connected to the holes in the grooves.

[0011] Multiple reinforcing ribs are provided on both sides of the multiple sets of heat sinks, and the multiple reinforcing ribs form multiple X shapes.

[0012] The oil inlet pipe is connected to the transformer oil outlet through a flange, and the oil outlet pipe is connected to the transformer oil inlet through a flange. The oil inlet pipe, the multiple sets of heat sinks, the oil outlet pipe, and the internal oil circuit of the transformer form a circulation loop.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a transformer radiator with perforated ventilation. Multiple sets of equidistant radiators are connected to the transformer through an upper oil inlet pipe and a lower oil outlet pipe, forming a circulating transformer hot oil cooling circuit. This circuit is used to cool the transformer hot oil and then re-inject it into the transformer for reuse. Through holes are provided on the surface of each radiator where there are no oil channels, so as to guide the cold air blown perpendicular to the radiator to the space between the radiators and remove the heat between them. The through holes on each radiator are staggered, which increases the distance and time of the cold air flow between the radiators, allowing the cold air to affect a larger area of ​​the space between the radiators and improving the heat dissipation effect. Furthermore, air vents that can rotate left and right and up and down are installed on each through hole. The opening angle of the air vents at the same position on adjacent heat sinks and at different positions on the same heat sink can be adjusted at different angles. This guides the cooling air to flow in multiple S-shapes between the heat sinks. That is, it can flow in an S-shape in the horizontal direction, it can flow in an S-shape in the vertical direction, and it can flow in a superimposed form in the horizontal or vertical direction. This allows the cold air to fully carry the heat between the heat sinks and improve the heat dissipation effect. Attached Figure Description

[0014] Figure 1 This is a frontal structural diagram of the present invention;

[0015] Figure 2 This is a side view of the structure of the present invention;

[0016] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0017] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0018] Figure 5 This is a schematic diagram of the air intake window structure in this invention;

[0019] In the picture:

[0020] 1. Oil inlet pipe;

[0021] 2. Oil outlet pipe;

[0022] 3. Heat sink; 31. Plate; 32. Oil channel; 33. Upper flow divider; 34. Lower flow convergence section; 35. Groove; 36. Through hole;

[0023] 4. Air intake window; 41. Outer shell; 42. Inner shell; 43. Blades;

[0024] 5. Reinforcing ribs. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Please see Figure 1-5 The present invention provides a technical solution:

[0027] A transformer radiator with perforated ventilation includes an oil inlet pipe 1 at the top, an oil outlet pipe 2 at the bottom, and multiple sets of radiator fins 3 connecting the oil inlet pipe 1 and the oil outlet pipe 2. The radiator fins 3 are formed by welding two plates 31 together, and multiple sets of oil channels 32 are arranged at equal intervals inside the radiator fins 3. Through holes 36 are opened between adjacent oil channels 32 on the radiator fins 3 to introduce cold air into each radiator fin 3.

[0028] In this embodiment, multiple sets of equally spaced heat sinks 3 are connected to the transformer via an upper oil inlet pipe 1 and a lower oil outlet pipe 2, forming a circulating transformer hot oil cooling circuit. This circuit cools the transformer hot oil and then re-injects it into the transformer for reuse. Through holes 36 are provided on the surface of each heat sink 3 where there are no oil channels 32, guiding cold air blown perpendicularly to the heat sink 3 between the heat sinks 3 to remove heat from between them. The through holes 36 on each heat sink 3 are staggered, increasing the distance and time for the cold air to flow between them, allowing the cold air to affect a larger area of ​​the space between the heat sinks 3 and improving the heat dissipation effect.

[0029] Furthermore, the oil inlet pipe 1 is connected to the transformer oil outlet via a flange, and the oil outlet pipe 2 is connected to the transformer oil inlet via a flange. The oil inlet pipe 1, multiple sets of heat sinks 3, the oil outlet pipe 2, and the internal oil passages of the transformer form a circulation loop. The upper and lower ends of both plates 31 are configured with semi-circular grooves 35, and the oil inlet pipe 1 and oil outlet pipe 2 are inserted and fixed into these grooves 35. The surfaces of both the oil inlet pipe 1 and oil outlet pipe 2 are provided with several holes that communicate with the holes in the grooves 35. The two plates 31 are identical and are joined together to form heat sinks 3. Each plate 31 includes an upper branching section 33, a lower confluence section 34, and various oil passages 32 between them.

[0030] In this embodiment, two identical plates 31 are welded together to form a heat sink 3 with an upper shunt 33, a lower merging 34, and oil channels 32 in the middle. The hot oil from the transformer is rapidly cooled by being guided into each oil channel 32. Specifically, the hot oil in the transformer is introduced into the oil inlet pipe 1 through the oil outlet, enters the grooves 35 on the lower side of the oil inlet pipe 1, and then flows into the upper shunt 33 of the heat sink 3 through the holes on the lower side of the oil inlet pipe 1. The oil is then distributed and cooled along the upper shunt 33 into each oil channel 32. Afterward, it is collected again in the lower merging 34 at the bottom along each oil channel 32, and then introduced into the oil outlet pipe 2 through the holes in the lower grooves 35 of the heat sink 3. The cooled oil in each heat sink 3 is collected along the oil outlet pipe 2 and then reinjected into the transformer for reuse, thus realizing the entire transformer's cyclic cooling process.

[0031] Furthermore, a transformer radiator with perforated ventilation includes an upper oil inlet pipe 1, a lower oil outlet pipe 2, and multiple sets of radiator fins 3 connecting the oil inlet pipe 1 and the oil outlet pipe 2. Each radiator fin 3 is formed by welding two plates 31 together, and multiple sets of oil channels 32 are evenly spaced within the radiator fin 3. Through holes 36 are provided between adjacent oil channels 32 on the radiator fin 3 to introduce cool air between the radiator fins 3. The through holes 36 on each radiator fin 3 are strip-shaped, and the through holes 36 at the same position between two adjacent radiator fins 3 are staggered.

[0032] In this embodiment, through holes 36 are made at the locations where there are no oil channels 32 on each heat sink 3. By guiding the airflow perpendicular to the heat sink 3, it can also enter the interior of each heat sink 3 and carry away the heat inside each heat sink 3. At the same time, since the through holes 36 at the same location on two adjacent heat sinks 3 are staggered, the cold air can circulate between each heat sink 3, which can cool a larger area between the heat sinks 3 and improve the cooling effect.

[0033] Furthermore, a transformer radiator with perforated ventilation includes an upper oil inlet pipe 1, a lower oil outlet pipe 2, and multiple sets of radiator fins 3 connecting the oil inlet pipe 1 and the oil outlet pipe 2. Each radiator fin 3 is formed by welding two plates 31 together, and multiple sets of oil channels 32 are evenly spaced within the radiator fin 3. Through holes 36 are provided between adjacent oil channels 32 on the radiator fin 3 to introduce cool air into each radiator fin 3. The through holes 36 on each radiator fin 3 are strip-shaped, and the through holes 36 at the same position between two adjacent radiator fins 3 are staggered. A detachable air intake window 4 is provided in the through hole 36, which is used to adjust the airflow direction in the vertical or horizontal direction. The air intake window 4 includes a housing 4 installed in the through hole 36, and an inner housing 42 that can rotate vertically is provided inside the housing 4. The inner housing 42 has blades 43 that can rotate horizontally inside.

[0034] In this embodiment, an air intake window 4 is installed in the through hole 36 of the heat sink 3. The air intake window 4 is adjusted by rotating the blade 43 left and right to adjust the left and right airflow direction, and by rotating it 90 degrees to guide the airflow perpendicular to the heat sink 3. The air intake window 4 is also adjusted up and down by rotating the inner shell 42 and the blade 43 together, and by rotating it 90 degrees to guide the airflow perpendicular to the heat sink 3. The inner shell 42 and the blade 43 can also be adjusted at their own angles to adapt to different airflow directions. Furthermore, the opening angles of the air intake windows 4 at the same position on adjacent heat sinks 3 and at different positions on the same heat sink 3 can be set differently. This guides the cooling air to flow in multiple S-shapes between the heat sinks 3, such as from left to right, from top to bottom, or even a combination of left-to-right and top-to-bottom flow patterns. This allows the cold air to fully dissipate heat between the heat sinks 3, improving the heat dissipation effect.

[0035] Furthermore, multiple reinforcing ribs 5 are provided on both sides of the multiple heat sinks 3, and the multiple reinforcing ribs 5 form multiple X shapes.

[0036] In this embodiment, the reinforcing ribs 5 are used to further define the positions between the multiple heat sinks 3 and fix each heat sink 3 to prevent its position from easily changing and making it inconvenient for air cooling. Specifically, a horizontal reinforcing rib 5 can be set at the midpoint of both sides of the multiple heat sinks 3, and then a diagonal reinforcing rib 5 can be set above and below the horizontal reinforcing rib 5. The diagonal reinforcing ribs 5 at the same position on the left and right sides form an X shape to increase the fixing effect.

[0037] The working principle and usage process of this invention: After the invention is installed, the hot oil in the transformer is introduced into the oil inlet pipe 1 through the oil outlet. It enters the groove 35 holes on the lower side of the oil inlet pipe 1 and enters the upper diversion part 33 of the heat sink 3. It is then diverted into the oil passages 32 for dispersed cooling along the upper diversion part 33. Afterwards, it is collected again in the lower confluence part 34 at the bottom along the oil passages 32. Then, it is introduced into the oil outlet pipe 2 through the lower groove 35 holes of the heat sink 3. The oil that has been cooled in each heat sink 3 is collected along the oil outlet pipe 2 and then injected back into the transformer for reuse, realizing the entire transformer's cyclic cooling process.

[0038] Because the heat sinks 3 are spaced at equal intervals and have a large area, the airflow from the sides to the middle heat sink 3 is blocked by the outermost heat sink 3, which affects its cooling effect.

[0039] When through holes 36 that avoid oil channels 32 are opened on the surface of each heat sink 3, and the through holes 36 on adjacent heat sink 3 are staggered, the air blown from both sides will also enter between adjacent heat sink 3 along the through holes 36, driving the heat between the heat sink 3. Since the through holes 36 at each position are staggered, the air can circulate more fully between the heat sink 3, so as to fully remove the heat between the heat sink 3.

[0040] Specifically, through holes 36 are made on the surface of each heat sink 3 to avoid the oil passage 32, and air inlets 4 are installed inside each through hole 36. The rotation angle of the inner shell 42 and the blades 43 is adjusted according to the direction to guide the cold air from each direction to the heat sink 3. Specifically, when the air is parallel to the heat sink 3, the angle of the blades 43 is kept constant or rotated to guide the cold air parallel to the heat sink 3 to the heat sink 3 to remove heat. When the air is perpendicular to the heat sink 3, the blades 43 are rotated to introduce the air into the heat sink 3 to remove heat. At the same time, when the air comes from the top and bottom, the air intake can also be achieved by rotating the inner frame and the blades 43 together. Furthermore, when the air blows from an angle, the air is guided to the heat sink 3 to remove heat by rotating the angle of the inner shell 42 and the blades 43.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A perforated ventilated heat sink for a transformer, characterized in that: It includes an oil inlet pipe (1) located at the top, an oil outlet pipe (2) located at the bottom, and multiple sets of heat sinks (3) connecting the oil inlet pipe (1) and the oil outlet pipe (2). The heat sink (3) is formed by welding two plates (31) together, and multiple sets of oil channels (32) are arranged at equal intervals inside the heat sink (3). Through holes (36) are opened between adjacent oil channels (32) on the heat sink (3) to introduce cold air into each heat sink (3); the through holes (36) on each heat sink (3) All are set in strip shape, and the through holes (36) at the same position between two adjacent heat sinks (3) are staggered; a detachable air intake window (4) is provided in the through hole (36), which is used to adjust the air direction in the up and down direction or the left and right direction; the air intake window (4) includes a shell (41) installed in the through hole (36), and an inner shell (42) that can rotate up and down is provided inside the shell (41), and a blade (43) that can rotate left and right is provided inside the inner shell (42).

2. A ventilated heat sink for a transformer as described in claim 1, characterized in that: The two plates (31) are exactly the same and are joined together to form the heat sink (3). Each plate (31) includes an upper flow divider (33), a lower flow combiner (34), and various oil passages (32) between them.

3. A ventilated heat sink for a transformer as described in claim 1, characterized in that: The upper and lower ends of the two plates (31) are both set as semi-circular grooves (35), and the oil inlet pipe (1) and the oil outlet pipe (2) are inserted and fixed to the groove (35). The surfaces of the oil inlet pipe (1) and the oil outlet pipe (2) are provided with several holes that are connected to the holes in the groove (35).

4. A ventilated heat sink for a transformer as described in claim 1, characterized in that: Multiple reinforcing ribs (5) are provided on both sides of the multiple sets of heat sinks (3), and the multiple reinforcing ribs (5) form multiple X shapes.

5. A ventilated heat sink for a transformer as described in claim 1, characterized in that: The oil inlet pipe (1) is connected to the transformer oil outlet through a flange, and the oil outlet pipe (2) is connected to the transformer oil inlet through a flange. The oil inlet pipe (1), multiple sets of heat sinks (3), the oil outlet pipe (2), and the internal oil circuit of the transformer form a circulation loop.

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