Transformer structure

Abstract

The utility model relates to a transformer structure which comprises a main body, a heat dissipation plate is arranged on the outer wall of the main body, transverse plates are arranged on the two sides of the inner wall of the main body respectively, one end of each transverse plate is connected with the main body, the other end of each transverse plate is a free end, a notch is formed between the free end and the inner wall of the main body, and the transverse plates are alternately arranged between an oil inlet and an oil outlet of the main body in parallel. The oil moves around the transverse plates in the body, the winding comprises a plurality of coils, the transverse plates are arranged between the coils, the coils are arranged between the adjacent transverse plates, the number of the coils on the lower portion is larger than that of the coils on the upper portion, and a cooling device is arranged outside the body and comprises an interface portion. A plurality of parallel guide pipes are arranged between the connector parts on the two sides and located in the flow guide channel, a plurality of cooling fins are arranged in the flow guide channel and are perpendicular to the guide pipes, and the guide pipes penetrate through the cooling fins. The internal and external cooling effect of the transformer is effectively improved, and meanwhile the oil cooling efficiency can be further improved through the cooling device.

Description

Technical Field

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

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage, such as an electric power transformer. Windings are arranged in the main body of the transformer. The windings and the iron core are the core components of the transformer. Since the windings themselves have resistance or there is contact resistance at the joints, Joule's law shows that heat will be generated. The heat of the windings is usually dissipated through oil. For example, the patent with the announcement number CN113257529B discloses a liquid-immersed non-flammable power transformer. The heat of the transformer is transferred to the radiator through the non-flammable insulating liquid, and then dissipated to the external environment through the radiator; in addition, the non-flammable insulating liquid is cooled by a cooler. However, in the above technical solution, the heat dissipation effect of each position of the winding is the same, and due to the high heat generation at the top of the winding, a better heat dissipation effect cannot be obtained. Utility Model Content

[0003] In order to solve the problems of the prior art, the utility model provides a transformer structure which can improve the heat dissipation effect of the transformer and increase the oil cooling efficiency.

[0004] The specific technical solution is as follows: A transformer structure includes a main body, in which windings and oil are arranged, and a heat dissipation plate is provided on the outer wall of the main body. Horizontal plates are provided on both sides of the inner wall of the main body, one end of the horizontal plate is connected to the main body, and the other end is a free end. A gap is formed between the free end and the inner wall of the main body for oil to pass through. Several horizontal plates are parallel and alternately arranged between the oil inlet and the oil outlet of the main body, and the oil moves around the horizontal plates in the main body. The winding includes several coils, and the horizontal plates are arranged between the coils. Several coils are arranged between adjacent horizontal plates, and the number of coils below is greater than the number of coils above. A cooling device is provided on the outside of the main body, and the cooling device is respectively connected to the oil inlet and the oil outlet. The cooling device includes an interface part, and several parallel conduits are provided between the interface parts on both sides. The conduits are located in the guide channel, and several heat sinks are provided in the guide channel. The heat sinks are arranged perpendicular to the conduits, and the conduits pass through the heat sinks.

[0005] In some embodiments, the oil inlet is arranged at the bottom of the main body, the oil outlet is arranged at the top of the main body, and the cross plate is arranged horizontally.

[0006] In some embodiments, the number of coils in the winding from bottom to top is seven groups, five groups, and three groups respectively.

[0007] In some embodiments, an oil indicator device is provided on the outside of the main body.

[0008] In some embodiments, the oil indicating device includes an oil tank, an observation part and a connecting pipe. The oil tank is fixed on the main body, the observation part is arranged on the oil tank, and one end of the connecting pipe is connected to the oil tank and the other end is connected to the main body.

[0009] In some embodiments, the connecting pipe includes a first pipe and a second pipe, the first pipe is connected to the area above the oil level, and the second pipe is connected to the area below the oil level.

[0010] In some embodiments, the first conduit is in communication with the top of the oil tank, and the second conduit is in communication with the bottom of the oil tank.

[0011] Technical effect of the utility model: A transformer structure of the utility model effectively improves the internal and external cooling effect of the transformer through the external heat sink of the main body and the oil circulation inside the winding. At the same time, the oil cooling efficiency can be further improved through the cooling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a transformer structure according to an embodiment of the present utility model.

[0013] Figure 2 It is a schematic diagram of the main body of an embodiment of the present utility model.

[0014] Figure 3 It is a schematic diagram of the oil flow of an embodiment of the present utility model.

[0015] Figure 4 It is a schematic diagram of the joint portion of the cooling device according to an embodiment of the present invention.

[0016] Figure 5 Schematic diagram of a catheter according to an embodiment of the present invention.

[0017] Figure 6 It is a schematic diagram of the oil tank of an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The essential features and advantages of the present invention are further described below with reference to examples, but the present invention is not limited to the examples listed.

[0019] like Figures 1 to 6As shown, a transformer structure of this embodiment includes a main body 1, in which a winding 2 and oil are provided. The outer wall of the main body 1 is provided with a heat sink 3, thereby enhancing the heat dissipation capacity of the main body 1. Horizontal plates 4 are provided on both sides of the inner wall of the main body 1, one end of the horizontal plate 4 is connected to the main body 1, and the other end is a free end. A gap 5 is formed between the free end and the inner wall of the main body 1 for the passage of oil. Several horizontal plates 4 are arranged in parallel and alternately between the oil inlet 11 and the oil outlet 12 of the main body 1. The oil can enter the main body 1 through the oil inlet 11 and be discharged through the oil outlet 12. The oil moves around the horizontal plates 4 in the main body, so that the flow path of the oil between the horizontal plates is S-shaped, extending the oil flow path and enhancing the heat dissipation effect. The winding 2 includes a plurality of coils 21, with a transverse plate 4 disposed between the coils 21. Adjacent transverse plates 4 are provided with a plurality of coils 21, so that the oil can remove heat from the coils 21. The number of coils 21 at the bottom is greater than the number of coils 21 at the top, so that the oil flows more slowly at the bottom and more quickly at the top. The heat generated by the winding at the top is greater, so the oil with a faster flow rate at the top can improve the heat dissipation effect above the winding. A cooling device 6 is provided on the outside of the main body 1. The cooling device 6 is connected to the oil inlet 11 and the oil outlet 12, respectively. The oil enters the cooling device 6 through the oil outlet 12, is cooled by the cooling device 6, and is then fed into the main body 1 through the oil inlet 11, thereby allowing the oil to cool and circulate, improving cooling efficiency. The cooling device 6 includes an interface 61, with a plurality of parallel conduits 62 disposed between the two side interface portions 61. The conduits 62 are located in a guide channel 63, and a plurality of heat sinks 64 are provided in the guide channel 63. The heat sinks 64 are disposed perpendicular to the conduits 62, and the conduits pass through the heat sinks. Through this technical solution, the oil entering the interface 61 flows into several conduits 62, dissipating heat through the heat sink 64. Simultaneously, cooling air is blown into the guide channel 63, further enhancing the heat dissipation effect. The oil flows through the horizontal and vertical oil paths within the windings, removing heat. In this technical solution, the external heat sink of the main body and the oil circulation within the windings effectively enhance the cooling effect both inside and outside the transformer. Furthermore, the cooling device further improves the oil cooling efficiency.

[0020] In this embodiment, the oil inlet 11 is located at the bottom of the main body 1, the oil outlet 11 is located at the top of the main body 1, and the horizontal plate 4 is arranged horizontally, so that the oil can flow from the bottom to the top, removing heat from the bottom up. The number of coils 21 in the winding from bottom to top is seven, five, and three, respectively, so that the oil flow speed increases as it goes up, improving the heat dissipation effect.

[0021] In this embodiment, an oil indicator device 7 is provided on the outside of the main body 1, so as to facilitate observation of the oil position in the main body from the outside. The oil indicator device 7 includes an oil tank 71, an observation portion 72 and a connecting pipe. The oil tank 71 is fixed to the main body 1, and the observation portion 72 is provided on the oil tank 71. One end of the connecting pipe is connected to the oil tank 71, and the other end is connected to the main body 1. In the above technical solution, the oil tank 71 is connected to the main body 1 so that the oil can enter the oil tank 71. The liquid level of the oil tank 71 is consistent with the liquid level in the main body 1, so that the liquid level position can be indicated. The connecting pipe includes a first pipe 73 and a second pipe 74. The first pipe 73 is connected to the upper side of the oil level, and the second pipe 74 is connected to the lower side of the oil level, so that the oil can flow into the oil tank 71 through the second pipe 74. The pressure in the oil tank 71 is consistent with the pressure in the main body 1. The first pipe 73 is connected to the top of the oil tank 71, and the second pipe 74 is connected to the bottom of the oil tank 71, thereby facilitating the circulation of oil and gas. Flange interfaces 711 are provided at the top and bottom of the oil tank 71 to facilitate the connection of the pipes and the oil tank 71.

[0022] A transformer structure of this embodiment effectively improves the internal and external cooling effect of the transformer through the external heat sink of the main body and the oil circulation inside the winding. At the same time, the oil cooling efficiency can be further improved through the cooling device.

[0023] It should be noted that the above preferred embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A transformer structure, comprising a main body, wherein windings and oil are arranged in the main body, characterized in that: The outer wall of the main body is provided with a heat dissipation plate, and horizontal plates are respectively provided on both sides of the inner wall of the main body. One end of the horizontal plate is connected to the main body, and the other end is a free end. A gap is formed between the free end and the inner wall of the main body for oil to pass through. Several horizontal plates are parallel and alternately arranged between the oil inlet and the oil outlet of the main body. The oil moves around the horizontal plates in the main body. The winding includes several coils. The horizontal plates are arranged between the coils. Several coils are arranged between adjacent horizontal plates. The number of coils below is greater than the number of coils above. A cooling device is provided on the outside of the main body, and the cooling device is respectively connected to the oil inlet and the oil outlet. The cooling device includes an interface part, and several parallel conduits are provided between the interface parts on both sides. The conduits are located in the guide channel. Several heat sinks are provided in the guide channel. The heat sinks are arranged perpendicular to the conduits, and the conduits pass through the heat sinks.

2. The transformer structure according to claim 1, characterized in that: The oil inlet is arranged at the bottom of the main body, the oil outlet is arranged at the top of the main body, and the transverse plate is arranged horizontally.

3. The transformer structure according to claim 2, characterized in that: The numbers of coils in the winding from bottom to top are seven groups, five groups and three groups respectively.

4. The transformer structure according to claim 1, characterized in that: An oil indicating device is provided on the outer side of the main body.

5. The transformer structure according to claim 4, characterized in that: The oil indicating device includes an oil tank, an observation part and a connecting pipe. The oil tank is fixed on the main body, the observation part is arranged on the oil tank, and one end of the connecting pipe is connected to the oil tank and the other end is connected to the main body.

6. The transformer structure according to claim 5, characterized in that: The connecting pipe includes a first pipe and a second pipe, the first pipe is communicated with the area above the oil level, and the second pipe is communicated with the area below the oil level.

7. The transformer structure according to claim 6, characterized in that: The first pipeline is communicated with the top of the oil tank, and the second pipeline is communicated with the bottom of the oil tank.

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