A dry-type transformer with high efficiency heat dissipation

Abstract

The present invention discloses a dry-type transformer with high efficiency in heat dissipation, which belongs to the technical field of heat dissipation of transformers. It comprises a rectangular transformer shell, wherein a plurality of air inlets are arranged on two opposite sides of the rectangular transformer shell, and an air guide mechanism is arranged on the side where the air inlets are arranged, and two groups of the air guide mechanisms are arranged symmetrically with respect to the center, and one group of the air guide mechanisms comprises two sliding bars arranged in parallel, and the ends of the two sliding bars are provided with fixing blocks, and the fixing blocks respectively fix the two sliding bars on the upper and lower edges of the side where the air inlets are arranged on the rectangular transformer shell, and a slide plate is arranged between the two sliding bars, and the two ends of the slide plate are respectively slidably connected to the two sliding bars, and the fixing blocks arranged on the same side of the two sliding bars are provided with vertical poles, and one end of the vertical pole is connected to the fixing block. This scheme is used to solve the problem in the prior art that the air inlets arranged on the transformer shell can only realize air intake in a single direction, resulting in poor heat dissipation effect inside the transformer.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer heat dissipation, and in particular relates to a dry-type transformer with high-efficiency heat dissipation. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of a primary coil, a secondary coil, and an iron core (magnetic core). Transformers play a vital role in power systems and are basic equipment for power transmission and distribution. They are widely used in industries, agriculture, transportation, urban communities, and other fields. Depending on their uses, transformers can be divided into many types, such as distribution transformers, power transformers, fully sealed transformers, combined transformers, dry-type transformers, etc. When the outside temperature is high, the temperature inside the transformer will rise. At the same time, the transformer itself will generate heat when working. If the heat dissipation capacity of the transformer is insufficient, it will easily lead to excessive temperature, thereby damaging the transformer.

[0003] At present, in order to dissipate heat from the transformer, air inlet holes (ventilation holes) are usually provided on the transformer casing, but the ventilation holes are usually provided on two opposite sides of the transformer casing, because the other two opposite sides will be blocked by the transformer mounting frame or the installation poles and other parts. Even if the ventilation holes are provided, the actual air intake volume is relatively small, and the air inlet holes on the two oppositely arranged sides that are not blocked can only take in air in a single direction (wind blowing in the direction parallel to the air inlet holes). Therefore, when the wind blows perpendicular to the axis of the air inlet hole, the wind cannot enter from the air inlet hole, which will result in poor internal heat dissipation effect of the transformer. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a dry-type transformer with efficient heat dissipation, so as to solve the problem in the prior art that the air inlet holes arranged on the transformer housing can only realize air intake in a single direction, resulting in poor heat dissipation effect inside the transformer.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention discloses a dry-type transformer with high efficiency in heat dissipation, comprising a rectangular transformer shell, wherein a plurality of air inlet holes are respectively arranged on two opposite sides of the rectangular transformer shell, and an air guide mechanism is respectively arranged on the sides where the air inlet holes are arranged, and two groups of the air guide mechanisms are centrally symmetrically arranged, and one group of the air guide mechanisms comprises two sliding bars arranged in parallel, and the ends of the two sliding bars are respectively provided with fixing blocks, and the fixing blocks respectively fix the two sliding bars to the upper and lower edges of the sides where the air inlet holes are arranged on the rectangular transformer shell, and a slide plate is provided between the two sliding bars, and the two ends of the slide plate are respectively slidably connected to the two sliding bars, and the fixing blocks arranged on the same side of the two sliding bars are respectively provided with vertical rods, one end of the vertical rod is connected to the fixing block, and the other end of the vertical rod is provided with a fixing plate, and an air guide cloth is provided between the fixing plate and the slide plate, and the two ends of the air guide cloth are respectively fixed to the fixing plate and the slide plate, and when the slide plate is located at the end of the sliding bar away from the fixing plate, the air guide cloth is unfolded to fully cover the air inlet holes arranged on one side of the rectangular transformer shell.

[0007] Furthermore, a first guide block is provided on one side surface of the rectangular transformer housing close to the fixed plate, a first traction rope is provided in the first guide block, the first traction rope is slidably connected to the first guide block, one end of the first traction rope is fixed to the middle part of a side surface of the slide plate facing the fixed plate, and a counterweight block is provided on the other end of the first traction rope.

[0008] Furthermore, connecting plates are symmetrically provided on the fixed block, a rotating shaft is provided between the connecting plates, one end of the vertical rod is rotatably connected to the rotating shaft, a baffle is provided on the side of the fixed block facing the slide plate, one end of the baffle is fixed on the fixed block, and the other end of the baffle is located above the rotating shaft, a diagonal support spring is provided on the vertical rod, one end of the diagonal support spring is fixed to the vertical rod, and the other end of the diagonal support spring is fixed to the end of the sliding rod. Under normal circumstances, the diagonal support spring is used to press the vertical rod vertically against the baffle.

[0009] Furthermore, a second guide block is provided on one side surface of the rectangular transformer housing close to the fixed plate, a second traction rope is provided on the second guide block, the second traction rope is slidably connected to the second guide block, one end of the second traction rope is fixed to the middle of the fixed plate, and a first water-absorbing sponge is provided on the other end of the second traction rope, and the vertical rod is a telescopic rod.

[0010] Furthermore, the vertical pole includes a hollow tube and an external tube sleeved in the hollow tube, a return spring is provided in the hollow tube, one end of the return spring is fixed to the inner side surface of the end of the hollow tube connected to the rotating shaft, and the other end of the return spring is fixed to one end of the external tube located in the hollow tube.

[0011] Furthermore, a third guide block is provided on a side surface of the rectangular transformer housing away from the fixed rod, a third traction rope is provided in the third guide block, the third traction rope is slidably connected to the third guide block, one end of the third traction rope is fixed to the middle part of a side surface of the slide plate away from the fixed plate, and a second water-absorbing sponge is provided on the other end of the third traction rope.

[0012] Furthermore, the sides of the first water-absorbing sponge and the second water-absorbing sponge provided on the rectangular transformer housing are both provided with V-shaped water-collecting plates, and the water outlet end of the V-shaped water-collecting plate is located directly above the first water-absorbing sponge and the second water-absorbing sponge.

[0013] Furthermore, upper and lower edges of both sides of the rectangular transformer housing where the air inlet is arranged are provided with vertical plates, and the vertical plates are arranged perpendicular to the sides of the rectangular transformer housing.

[0014] Furthermore, a transformer assembly is provided inside the rectangular transformer housing, and sealed cover plates are provided on the upper and lower end surfaces of the rectangular transformer housing.

[0015] The beneficial effects of the present invention are:

[0016] In the present technical solution, not only can the wind blowing perpendicularly to the axis direction of the air inlet hole be introduced into the interior of the rectangular transformer casing for heat dissipation, but at the same time, the two sets of air guide mechanisms are symmetrically arranged at the center, so that air enters from the air inlet hole arranged on one side surface, while the outer side of the air inlet hole on the other side surface presents a negative pressure under the action of wind speed, thereby sucking out the hot air inside the rectangular transformer casing, thereby achieving the effect of air entering at one end and sucking out at the other end, thereby improving the flow effect of air inside the rectangular transformer casing, and thereby improving the heat dissipation effect.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0019] Figure 1 It is a three-dimensional schematic diagram of a dry-type transformer of the present invention;

[0020] Figure 2 A three-dimensional schematic diagram of the dry-type transformer of the present invention from another viewing angle;

[0021] Figure 3 It is a schematic top view of the dry-type transformer of the present invention;

[0022] Figure 4 It is a three-dimensional schematic diagram of an air guide mechanism provided on a rectangular transformer housing of the present invention;

[0023] Figure 5 For the present invention Figure 4 A local enlarged schematic diagram of the middle A;

[0024] Figure 6 It is a schematic diagram of the sealing end plate and the vertical plate provided on the rectangular transformer housing of the dry-type transformer of the present invention.

[0025] The following are marked in the accompanying drawings:

[0026] 1. Transformer assembly; 2. Rectangular transformer housing; 3. Air inlet; 4. Slide rod; 5. Fixed block; 6. Vertical pole; 7. Fixed plate; 8. Air guide cloth; 9. Diagonal support spring; 10. Counterweight; 11. First traction rope; 12. Slide plate; 13. First guide block; 14. Second traction rope; 15. First water-absorbing sponge; 16. Third traction rope; 17. Second water-absorbing sponge; 18. Connecting plate; 19. Rotating shaft; 20. Baffle; 21. Second guide block; 22. Sealed cover; 23. Vertical plate; 24. Third guide block. DETAILED DESCRIPTION

[0027] like Figure 1 to Figure 6 As shown, the present invention is a dry-type transformer with high heat dissipation, including a rectangular transformer housing 2, a transformer assembly 1 is arranged inside the rectangular transformer housing 2, and the upper and lower end surfaces of the rectangular transformer housing 2 are both provided with a sealed cover plate 22, the transformer assembly 1 refers to a working part such as a core, and a plurality of air inlet holes are arranged on two opposite sides of the rectangular transformer housing 2, and air guide mechanisms are arranged on the two sides where the air inlet holes are arranged, and the two groups of air guide mechanisms are centrally symmetrically arranged. It should be explained that the centrally symmetrical arrangement here refers to two groups of centrally symmetrically arranged air guide mechanisms obtained by rotating 180° along the vertical center axis of the rectangular transformer housing 2;

[0028] A set of air guide mechanisms includes two sliding bars 4 arranged in parallel, and the ends of the two sliding bars 4 are provided with fixing blocks 5. The fixing blocks 5 fix the two sliding bars 4 respectively on the upper and lower edges of the sides of the air inlet holes of the rectangular transformer housing 2. A slide plate 12 is provided between the two sliding bars 4, and the two ends of the slide plate 12 are respectively slidably connected to the two sliding bars 4. The fixing blocks 5 arranged on the same side of the two sliding bars 4 are provided with vertical poles 6, one end of the vertical pole 6 is connected to the fixing block 5, and the other end of the vertical pole 6 is provided with a fixing plate 7. An air guide cloth 8 is provided between the fixing plate 7 and the slide plate 12, and the two ends of the air guide cloth 8 are respectively fixed to the fixing plate 7 and the slide plate 12. When the slide plate 12 is located at the end of the sliding bar 4 away from the fixing plate 7, the air guide cloth 8 is unfolded to fully cover the air inlet holes set on one side of the rectangular transformer housing 2.

[0029] The working principle of the above technical solution is:

[0030] When the external natural wind blows toward the rectangular transformer housing 2 from the axis perpendicular to the air inlet, at this time, the wind blows in from the gap between the fixed plate 7 on the side close to the incoming wind direction and the rectangular transformer housing 2 (because the setting of the vertical pole 6 makes this end position higher), and after blowing in, it is blocked by the wind guide cloth 8, and then under the action of wind force, the wind guide cloth 8 drives the slide plate 12 to slide on the slide bar 4, and then unfolds the entire wind guide cloth 8, and the unfolded wind guide cloth 8 covers the air inlet voucher on one side. Therefore, when the wind continues to blow, the wind guide cloth 8 moves to the extreme position, that is, the wind will be blocked, and then the blocked wind will enter in the direction of the air inlet on this side, so that the wind perpendicular to the axis of the air inlet can also achieve heat dissipation and cooling of the dry-type transformer;

[0031] As for the wind guide mechanism on the other side, since the skateboard 12 is arranged toward the direction of the incoming wind, the skateboard 12 will be blown by the wind to the side close to the fixed plate 7, thereby causing the wind guide cloth 8 to be folded. The folded wind guide cloth 8 will not block the air inlet hole on that side, making it convenient for the wind to blow through the outside of the air inlet hole 3. When blowing through, due to the high external wind speed, negative pressure will appear at the air inlet hole 3, thereby sucking out the hot air inside the rectangular transformer housing 2 or the air entering from the other side, thereby improving the overall heat dissipation effect.

[0032] It is not difficult to understand that in this technical solution, not only can the wind blowing perpendicular to the axial direction of the air inlet hole 3 be introduced into the interior of the rectangular transformer housing 2 for heat dissipation, but at the same time, the two sets of air guide mechanisms are arranged symmetrically at the center, so that air enters from the air inlet hole 3 arranged on one side surface, and the outer side of the air inlet hole 3 on the other side surface presents negative pressure under the action of wind speed, thereby sucking out the hot air inside the rectangular transformer housing 2, thereby achieving the effect of air entering at one end and sucking out at one end, improving the flow effect of air inside the rectangular transformer housing 2, and thereby improving the heat dissipation effect. At the same time, in this technical solution, the advantage of blocking the wind by means of the air guide cloth 8 (which is waterproof) is that the air guide cloth 8 has good flexibility, is easy to fold and unfold, and can greatly reduce the installation volume when used. If a wind shield is used, then a structure that allows the wind shield to be folded needs to be designed to meet the requirements of this technical solution. If a folding structure is provided, then the volume of the entire structure will increase, which is not convenient for actual use needs.

[0033] In one feasible manner, a first guide block 13 is provided on one side surface of the rectangular transformer housing 2 close to the fixed plate 7, and a first traction rope 11 is provided in the first guide block 13. The first traction rope 11 is slidably connected to the first guide block 13, and one end of the first traction rope 11 is fixed to the middle part of the side of the slide plate 12 facing the fixed plate 7, and a counterweight block 10 is provided on the other end of the first traction rope 11. Through the action of the counterweight block 10, under normal conditions, the slide plate 12 is pulled close to the fixed plate 7, thereby causing the air guide cloth 8 to be retracted. Of course, under the action of the wind force blowing perpendicular to the air guide hole, the gravity of the counterweight block 10 can be overcome to unfold the air guide cloth 8, and the retracted setting under normal conditions can avoid the problem of blocking the wind parallel to the axis of the air inlet hole 3.

[0034] In an operative manner, the fixing block 5 is symmetrically provided with connecting plates 18, a rotating shaft 19 is provided between the connecting plates 18, one end of the vertical rod 6 is rotatably connected to the rotating shaft 19, a baffle 20 is provided on the side of the fixing block 5 facing the slide plate 12, one end of the baffle 20 is fixed to the fixing block 5, and the other end of the baffle 20 is located above the rotating shaft 19, a diagonal brace spring 9 is provided on the vertical rod 6, one end of the diagonal brace spring 9 is fixed to the vertical rod 6, and the other end of the diagonal brace spring 9 is fixed to the end of the slide bar 4. Under normal circumstances, the diagonal brace spring 9 is used to vertically press the vertical rod 6 against the baffle 20. It is not difficult to understand that the setting of the baffle 20 can prevent the vertical rod 6 on one side of the air guide cloth 8 from being extended. The slide plate 12 tilts away from the slide plate 12 to improve the collection and guiding effect of the wind. At the same time, due to the retraction of the wind guide cloth 8 on the other side, the wind is blocked under the action of the vertical pole 6, and then the wind force overcomes the supporting force of the diagonal support spring 9 to deform it, thereby causing the vertical pole 6 to tilt. The tilted vertical pole 6 reduces the resistance of the wind guide cloth 8 to the wind, thereby weakening the resistance to wind speed, making the wind blow more smoothly, that is, the wind speed is relatively faster, and then the negative pressure formed at the air inlet 3 on this side is greater, which can better suck out the hot air inside the rectangular transformer casing 2, and at the same time can prevent the side wind from pouring into the rectangular transformer casing 2, resulting in the problem of poor internal hot air discharge effect.

[0035] In one practicable manner, a second guide block 21 is provided on one side surface of the rectangular transformer housing 2 close to the fixed plate 7, a second traction rope 14 is provided on the second guide block 21, the second traction rope 14 is slidably connected to the second guide block 21, one end of the second traction rope 14 is fixed to the middle of the fixed plate 7, a first water-absorbing sponge 15 is provided on the other end of the second traction rope 14, the vertical pole 6 is a telescopic pole, a third guide block 24 is provided on one side surface of the rectangular transformer housing 2 away from the fixed pole, a third traction rope 16 is provided in the third guide block 24, the third traction rope 16 is slidably connected to the third guide block 24, one end of the third traction rope 16 is fixed to the middle of a side surface of the slide plate 12 away from the fixed plate 7, and a second water-absorbing sponge 17 is provided on the other end of the third traction rope 16. When it rains, in order to prevent a large amount of rain from entering the interior of the rectangular transformer housing 2, the first water-absorbing sponge 15 and the second water-absorbing sponge 17 will absorb rainwater to increase their own weight, thereby driving the vertical pole 6 to fall and driving the slide plate 12 to move to the other end of the slide bar 4, thereby realizing the low-distance deployment of the wind guide cloth 8, so that the wind shield cloth covers the air inlet 3 with a small interval, thereby improving the blocking effect of rainwater. At the same time, when the rain stops, the water inside the first water-absorbing sponge 15 and the second water-absorbing sponge 17 will be evaporated and dropped, and then under the action of the counterweight block 10 and the diagonal support spring 9, the slide bar 4 and the vertical plate 23 will be driven to reset.

[0036] It should be noted that the air guide cloth 8 here is not completely in contact with the air inlet 3. At the same time, on rainy days, the temperature is relatively low, and the internal heat dissipation demand of the transformer is relatively small. Therefore, the heat dissipation area of ​​the air inlet 3 at this time can meet the heat dissipation demand. At the same time, the volumes of the first water-absorbing sponge 15 and the second water-absorbing sponge 17 can be designed according to actual conditions. They mainly need to overcome the gravity of the counterweight block 10 and the supporting force of the diagonal support spring 9. Of course, the influence of wind force on rainy days must also be considered. In the specific design, technical personnel in this field can draw conclusions through experience and a limited number of experiments, and will not go into details here.

[0037] In one feasible manner, the vertical pole 6 includes a hollow tube and an external tube sleeved in the hollow tube, a return spring is provided in the hollow tube, one end of the return spring is fixed to the inner side surface of the end portion of the hollow tube connected to the rotating shaft 19, and the other end of the return spring is fixed to one end of the external tube located in the hollow tube. This telescopic connection method is simple and can meet the use requirements.

[0038] In one feasible method, a V-shaped water collecting plate is provided on the side of the first water-absorbing sponge 15 and the second water-absorbing sponge 17 of the rectangular transformer housing 2, and the water outlet end of the V-shaped water collecting plate is located directly above the first water-absorbing sponge 15 and the second water-absorbing sponge. The function of the water collecting plate is to quickly collect rainwater, so that the water absorption speed of the first sponge and the second sponge becomes faster, thereby improving the response speed of the air guide cloth 8 to unfold and cover the air inlet 3.

[0039] In one feasible manner, vertical plates 23 are provided on the upper and lower edges of the two sides of the rectangular transformer housing 2 where the air inlet is provided. The vertical plates 23 are provided perpendicular to the sides of the rectangular transformer housing 2. The provision of the vertical plates 23 can block the gaps between the air guide cloth 8 and the upper and lower ends of the rectangular transformer housing 2 when unfolded to prevent excessive wind from overflowing, thereby "blocking" the wind and making it enter from the air inlet 3. At the same time, on rainy days, the upper and lower gaps between the air guide cloth 8 and the rectangular housing 2 can be shielded to prevent rainwater from entering.

[0040] Of course, in this technical solution, a cooling fan and a temperature sensor may also be provided inside the rectangular transformer housing 2 to facilitate auxiliary heat dissipation on rainy days or when the temperature inside the transformer is high.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A dry-type transformer with high heat dissipation efficiency, characterized by: The invention comprises a rectangular transformer housing (2), wherein two opposite sides of the rectangular transformer housing (2) are provided with a plurality of air inlet holes, and the sides on which the air inlet holes are provided are provided with air guide mechanisms, wherein two groups of the air guide mechanisms are centrally symmetrically arranged, wherein one group of the air guide mechanisms comprises two sliding bars (4) arranged in parallel, and the ends of the two sliding bars (4) are provided with fixing blocks (5), and the fixing blocks (5) respectively fix the two sliding bars (4) to the upper and lower edges of the sides of the rectangular transformer housing (2) on which the air inlet holes are provided, and a slide plate (12) is provided between the two sliding bars (4), and the two ends of the slide plate (12) are respectively slidably connected to the two sliding bars. On the sliding rod (4), a vertical rod (6) is provided on the fixed block (5) arranged on the same side of the two sliding rods (4), one end of the vertical rod (6) is connected to the fixed block (5), and the other end of the vertical rod (6) is provided with a fixed plate (7), and an air guide cloth (8) is provided between the fixed plate (7) and the sliding plate (12), and the two ends of the air guide cloth (8) are respectively fixed to the fixed plate (7) and the sliding plate (12), and when the sliding plate (12) is located at the end of the sliding rod (4) away from the fixed plate (7), the air guide cloth (8) is unfolded to fully cover the air inlet hole arranged on one side of the rectangular transformer housing (2); A first guide block (13) is provided on a side surface of the rectangular transformer housing (2) close to the fixed plate (7), a first traction rope (11) is provided inside the first guide block (13), the first traction rope (11) is slidably connected to the first guide block (13), one end of the first traction rope (11) is fixed to the middle of a side surface of the sliding plate (12) facing the fixed plate (7), and a counterweight block (10) is provided on the other end of the first traction rope (11).

2. A dry-type transformer with high heat dissipation efficiency according to claim 1, characterized in that: The fixed block (5) is symmetrically provided with connecting plates (18), a rotating shaft (19) is provided between the connecting plates (18), one end of the vertical rod (6) is rotatably connected to the rotating shaft (19), a baffle (20) is provided on the side of the fixed block (5) facing the slide plate (12), one end of the baffle (20) is fixed to the fixed block (5), and the other end of the baffle (20) is located above the rotating shaft (19), and a diagonal support spring (9) is provided on the vertical rod (6), one end of the diagonal support spring (9) is fixed to the vertical rod (6), and the other end of the diagonal support spring (9) is fixed to the end of the slide rod (4), and under normal conditions, the diagonal support spring (9) is used to vertically press the vertical rod (6) against the baffle (20).

3. The dry-type transformer with high heat dissipation efficiency according to claim 1, characterized in that: A second guide block (21) is provided on a side surface of the rectangular transformer housing (2) close to the fixing plate (7); a second traction rope (14) is provided on the second guide block (21); the second traction rope (14) is slidably connected to the second guide block (21); one end of the second traction rope (14) is fixed to the middle of the fixing plate (7); a first water-absorbing sponge (15) is provided on the other end of the second traction rope (14); and the vertical rod (6) is a telescopic rod.

4. A dry-type transformer with high heat dissipation efficiency according to claim 3, characterized in that: The upright pole (6) comprises a hollow tube and an external tube sleeved in the hollow tube, a return spring is arranged in the hollow tube, one end of the return spring is fixed to the inner side surface of the end of the hollow tube connected to the rotating shaft (19), and the other end of the return spring is fixed to one end of the external tube located in the hollow tube.

5. The dry-type transformer with high heat dissipation efficiency according to claim 3, characterized in that: A third guide block (24) is provided on a side surface of the rectangular transformer housing (2) away from the fixed rod, a third traction rope (16) is provided inside the third guide block (24), the third traction rope (16) is slidably connected to the third guide block (24), one end of the third traction rope (16) is fixed to the middle part of a side surface of the slide plate (12) away from the fixed plate (7), and a second water-absorbing sponge (17) is provided on the other end of the third traction rope (16).

6. The dry-type transformer with high heat dissipation efficiency according to claim 5, characterized in that: The rectangular transformer housing (2) is provided with a V-shaped water collecting plate on the side surfaces of the first water absorbing sponge (15) and the second water absorbing sponge (17), and the water outlet end of the V-shaped water collecting plate is located directly above the first water absorbing sponge (15) and the second water absorbing sponge.

7. The dry-type transformer with high heat dissipation efficiency according to claim 1, characterized in that: The upper and lower edges of the two side surfaces of the rectangular transformer housing (2) where the air inlet is arranged are both provided with vertical plates (23), and the vertical plates (23) are arranged perpendicular to the side surfaces of the rectangular transformer housing (2).

8. The dry-type transformer with high heat dissipation efficiency according to claim 1, characterized in that: A transformer assembly (1) is arranged inside the rectangular transformer housing (2), and sealed cover plates (22) are arranged on the upper and lower end surfaces of the rectangular transformer housing (2).

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