Large-capacity transformer structure matched with Huai-type box transformer substation

Abstract

The utility model discloses a high-capacity transformer structure matched with a Hua-type box transformer substation, which comprises a box body, a transformer winding and an iron core are arranged in the box body, and bent edges fixed with a box transformer substation base are arranged on the periphery of the bottom of the box body; the panel is arranged on one side of the long box wall of the box body, the periphery of the panel is bent, and a plurality of oblong holes are formed in the bent part, so that the panel is matched with the box transformer substation shell; the oil conservator is arranged on a box cover of the box body, is communicated with the interior of the box body through a pipeline and is used for injecting oil into the box body; and the fin radiator is arranged on one side of the other long box wall, opposite to the panel, of the box body and is used for radiating heat of the box body. The device can be matched with the Huai-type box transformer substations with different capacities and different voltage grades, so that the whole structure of the Huai-type box transformer substation is more compact and beautiful.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a large-capacity transformer structure for use with a Chinese-style box-type transformer. Background Art

[0002] As a common power distribution equipment, the Hua-style box-type transformer has the advantages of compact structure, safety, reliability, energy saving, etc. It has been widely used in China, especially in new energy fields such as wind power generation and photovoltaic power generation.

[0003] The transformer for the Chinese-style box-type transformer is a very important component of the Chinese-style box-type transformer. The structure of the transformer determines the overall appearance and cost of the Chinese-style box-type transformer. With the continuous increase in the capacity of wind turbines at home and abroad, the capacity and voltage level of the Chinese-style box-type transformer are also increasing, and the traditional structure cannot meet the needs of large capacity and high voltage.

[0004] Therefore, in view of the above technical problems, how to design a transformer structure that matches different capacities and different voltage levels is a technical problem that technical personnel in this field need to solve. Utility Model Content

[0005] The purpose of this application is to provide a large-capacity transformer structure for matching Chinese-style box-type transformers, which can enable modular design of the transformer and match Chinese-style box-type transformers of different capacities and voltage levels, making the overall structure of the Chinese-style box-type transformer more compact and beautiful.

[0006] To achieve the above purpose, the present application provides a large-capacity transformer structure for a Chinese-style box-type transformer, including:

[0007] The box body has transformer windings and an iron core built in it, and the bottom of the box body is provided with bent edges fixed to the box transformer base;

[0008] A panel is arranged on one side of the long wall of the box body, the panel is bent around, and a plurality of oblong holes are provided on the bent portion so that the panel matches the box transformer shell;

[0009] An oil storage cabinet, which is arranged on the box cover of the box body and is connected to the interior of the box body through a pipeline, and is used to fill the interior of the box body with oil;

[0010] A heat sink is arranged on one side of another long box wall of the box body opposite to the panel and is used to dissipate heat for the box body.

[0011] Preferably, a plurality of low-voltage bushings and a plurality of high-voltage bushings are provided on the panel, and the low-voltage bushings and the high-voltage bushings extend into the box and are connected to the windings.

[0012] Preferably, an adjustment seat is provided on the panel, a plurality of the high-voltage bushings are arranged on the adjustment seat, and the positions of the high-voltage bushings are adjustable.

[0013] Preferably, a tap switch is provided on the box cover to adjust the output voltage of the high-voltage bushing.

[0014] Preferably, the high-voltage bushing is a fully insulating bushing or an oil-sulfur hexafluoride bushing.

[0015] Preferably, the box body is a rectangular parallelepiped structure.

[0016] Preferably, a protective cover is provided on the outer periphery of the sheet, and a plurality of heat dissipation holes are provided on the protective cover.

[0017] Compared with the above background technology, the box of the present application has transformer windings and iron core built in to form the main part of the transformer. The bottom of the box is provided with bent edges fixed to the base of the box transformer, so that the box is fixed. A panel is provided on one long wall of the box. The panel is bent around and multiple oblong holes are provided on the bent part, so as to match the box transformer shell and be fixedly connected with it, thereby improving the stability of the box. The oil storage cabinet is provided on the box cover of the box and is connected to the inside of the box through a pipeline for filling oil into the box. A sheet heat sink is provided on the other long wall of the box opposite to the panel to provide heat dissipation function for the box.

[0018] This application arranges multiple components on the periphery of the box body to make the structure more compact, and this arrangement can be flexibly adjusted according to the capacity, voltage level, altitude, high-voltage switch type, etc. of the Chinese-style box transformer, while the overall structure of the box transformer remains unchanged. The box transformer is more compact, beautiful, occupies less space, and has lower costs. At the same time, the transformer and box transformer design are more efficient. With this structure of the Chinese-style box transformer, the capacity can reach 10000kVA, the voltage level reaches 66kV, and the altitude reaches 4000m. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a large-capacity transformer for use with a Chinese-style box-type transformer provided in an embodiment of the present application.

[0021] In the figure: 1, box body 2, box cover 3, oil storage cabinet 4, sheet metal 5, protective cover 6, high-voltage bushing 7, panel 8, low-voltage bushing 9, tap changer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that in this embodiment, the directions or positional relationships indicated by "upper", "lower", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] like Figure 1 As shown, in this embodiment, a large-capacity transformer structure for a Chinese-style box transformer is provided, which includes a box body 1, a panel 7, an oil storage cabinet 3 and a sheet 4. The box body 1 is the main load-bearing component of the transformer, and the winding and the iron core of the transformer are arranged in the box body 1. Generally speaking, the box body 1 here is also called an oil tank, and transformer oil is injected into the inside to enable the transformer to work normally.

[0026] Bending edges are arranged around the bottom of the box body 1, and a plurality of fixing holes are opened on the bending edges, so as to fix the box body 1 on the box transformer base.

[0027] A panel 7 is arranged on one side of the long wall of the box body 1. In this embodiment, the long wall refers to the side with the largest area among the side walls of the box body 1. The panel 7 is also bent all around, and a plurality of oblong holes are provided on the bent part, so that the panel 7 matches the box transformer shell and is fixed to the box transformer shell through the oblong holes, thereby improving the stability of the box body 1.

[0028] The oil storage cabinet 3 is used to store transformer oil, is arranged on the box cover 2 on the top of the box body 1, and is connected with the inside of the box body 1 through a pipeline, so that the transformer oil is injected into the box body 1.

[0029] Please refer to Figure 1The sheet diffuser 4 is arranged on another long wall of the box body 1 and is opposite to the position where the panel 7 is located, and can provide heat dissipation function for the box body 1. It should be noted that in order to improve the overall compactness of the structure, the sheet diffuser 4 can also be arranged on other parts of the periphery of the box body 1, for example, the sheet diffuser 4 can be arranged on other side walls except the side wall where the panel 7 is located, and the compactness of the structure will not be affected.

[0030] A protective cover 5 is arranged on the periphery of the sheet diffuser 4 to protect the sheet diffuser 4 and the housing 1 . Meanwhile, a plurality of heat dissipation holes are arranged on the protective cover 5 so as not to affect the heat dissipation efficiency of the sheet diffuser 4 .

[0031] It should be noted that, unlike the traditional transformer structure, the present application sets the low-voltage bushing 8 and the high-voltage bushing 6 on the panel 7. Figure 1 , multiple low-voltage bushings 8 and multiple high-voltage bushings 6 are respectively located on the left and right sides of the panel 7, and do not affect each other. Compared with the existing transformer structure, this arrangement makes the peripheral components of the box body 1 more compact, which can effectively reduce the space occupied by the low-voltage bushings 8 or the high-voltage bushings 6, so that the box transformer is more compact, beautiful, smaller in size and lower in cost without changing the overall structure of the box transformer.

[0032] The low-voltage bushing 8 and the high-voltage bushing 6 also need to extend into the box body 1 and be connected to the windings. The specific connection method will not be described here, and reference may be made to the prior art.

[0033] In summary of the above embodiments, the present application arranges multiple components on the periphery of the box body 1 to make the structure more compact, and this arrangement can be flexibly adjusted according to the capacity, voltage level, altitude, high-voltage switch type, etc. of the Chinese-style box transformer, while the overall structure of the box transformer does not change. The box transformer is more compact, beautiful, occupies less space, and has lower cost. At the same time, the transformer and box transformer design are more efficient. With this structure of the Chinese-style box transformer, the capacity can reach 10000kVA, the voltage level reaches 66kV, and the altitude reaches 4000m.

[0034] In addition, an adjustment seat is provided on the panel 7, and multiple high-voltage bushings 6 are arranged on the adjustment seat. The spacing, angle, position, etc. between the high-voltage bushings 6 can be adjusted according to actual working conditions; and the high-voltage bushings 6 can be fixed to the adjustment seat by bolts or the like. After the adjustment is completed, it is ensured that the high-voltage bushings 6 are stably set on the adjustment seat.

[0035] It should be noted that the setting of the adjustment seat does not affect the connection between the high-voltage bushing 6 and the winding, and during the position adjustment process of the high-voltage bushing 6, it will not affect the normal connection between the high-voltage bushing 6 and the winding, which will not be described in detail here.

[0036] Similarly, the position of the low-voltage bushing 8 can also be adjusted. The spacing and position of the low-voltage bushing 8 can be adjusted according to actual working conditions. The specific setting method can refer to the high-voltage bushing 6 and will not be described in detail here.

[0037] In addition, a tap switch 9 is also provided on the box cover 2. The tap switch 9 is adapted to cooperate with the low-voltage bushing 8. The connection relationship between the high-voltage bushing 6 and the winding is adjusted by the tap switch 9, thereby achieving adjustment of different gears and changing the voltage of the high-voltage bushing 6. As for the specific structure and setting method of the tap switch 9, it will not be described here in detail, and reference may be made to the prior art.

[0038] Please refer to Figure 1 The box body 1 of the present application is a rectangular parallelepiped structure as a whole, the panel 7 is located on one side of the rectangular parallelepiped, the sheet 4 is located on the other side of the rectangular parallelepiped, and the oil storage cabinet 3 is located on the top of the rectangular parallelepiped, so that the transformer is more modularly designed and the structure is more compact. The high-voltage bushing 6 adopts a fully insulating bushing or an oil-sulfur hexafluoride bushing. This arrangement can be flexibly adjusted according to the capacity, voltage level, altitude, high-voltage switch type, etc. of the Chinese box transformer, while the overall structure of the box transformer does not change. The box transformer is more compact, beautiful, occupies less space, and has lower cost.

[0039] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0040] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A large-capacity transformer structure for a Chinese-style box-type transformer, characterized in that: include: The box body has transformer windings and an iron core built in it, and the bottom of the box body is provided with bent edges fixed to the box transformer base; A panel is arranged on one side of the long wall of the box body, the panel is bent around, and a plurality of oblong holes are provided on the bent portion so that the panel matches the box transformer shell; An oil storage cabinet, which is arranged on the box cover of the box body and is connected to the interior of the box body through a pipeline, and is used to fill the interior of the box body with oil; A heat sink is arranged on one side of another long box wall of the box body opposite to the panel and is used to dissipate heat for the box body.

2. The large-capacity transformer structure for Chinese-style box-type transformer according to claim 1 is characterized in that: A plurality of low-voltage bushings and a plurality of high-voltage bushings are arranged on the panel. The low-voltage bushings and the high-voltage bushings extend into the box and are connected to the windings.

3. The large-capacity transformer structure for Chinese-style box-type transformer according to claim 2 is characterized in that: An adjustment seat is arranged on the panel, and a plurality of high-voltage bushings are arranged on the adjustment seat, and the positions of the high-voltage bushings are adjustable.

4. The large-capacity transformer structure for Chinese-style box-type transformer according to claim 2 is characterized in that: The box cover is provided with a tap switch to adjust the output voltage of the high-voltage bushing.

5. The large-capacity transformer structure for Chinese-style box-type transformer according to claim 2 is characterized in that: The high-voltage bushing is a fully insulating bushing or an oil-sulfur hexafluoride bushing.

6. The large-capacity transformer structure for Chinese-style box-type transformer according to claim 1 is characterized in that: The box body is a rectangular parallelepiped structure.

7. The large-capacity transformer structure for Chinese-style box-type transformer according to claim 1 is characterized in that: A protective cover is arranged on the periphery of the sheet, and a plurality of heat dissipation holes are arranged on the protective cover.

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