CN219476454U - Heavy current three-gear transformer - Google Patents

Abstract

The utility model relates to the technical field of transformers, in particular to a heavy-current three-gear transformer which comprises a box body, an iron core, a primary coil and a secondary coil, wherein the iron core, the primary coil and the secondary coil are arranged in the box body, a vertical partition plate is arranged in the box body, the primary coil and the secondary coil are arranged in a transformation cavity, three control boxes are arranged in the control cavity, an air inlet is formed in the bottom of each control box, an air outlet is formed in the top of each control box, a first exhaust fan is arranged at the air outlet in the top of each control box, an exhaust pipeline is arranged at the top of each control box, and the exhaust pipeline extends to the outside of the box body. According to the high-current three-gear transformer, high-current output is achieved, heat generated by the controller in the working process is directly discharged to the outside of the box body through the heat in the control box of the first exhaust fan, the temperature in the whole control cavity is prevented from being increased due to the fact that the heat circulates in the control cavity, normal operation of the controller is affected, heat is directly discharged through the exhaust pipeline, and heat dissipation is more thorough and stable.

Description

Heavy current three-gear transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a high-current three-gear transformer.

Background

In the prior art, a large amount of heat can be generated in the working process of components such as a primary coil, a secondary coil, a controller and the like in a box body of a large-scale transformer, and the normal operation of the controller can be influenced under serious conditions. At present, a transformer divides a box body into two cavities, wherein one cavity is provided with a controller independently, so that the influence of heat generated by a primary coil and a secondary coil on the controller is reduced. But the heat generated by the controller can circulate in the corresponding cavity, so that the temperature of the controller is higher, and the usability is affected.

Disclosure of Invention

The utility model aims to solve the technical defects and provides a high-current three-gear transformer which can effectively control the temperature of a control cavity where a controller is positioned so as to ensure continuous, stable and normal operation of equipment.

The utility model discloses a heavy-current three-gear transformer, which comprises a box body, an iron core, a primary coil and a secondary coil, wherein the iron core, the primary coil and the secondary coil are arranged in the box body, the primary coil and the secondary coil are wound on the iron core, a vertical partition plate is arranged in the box body, the box body is divided into two independent cavities, namely a control cavity and a transformation cavity, the primary coil and the secondary coil are arranged in the transformation cavity, a common output terminal and three transformation output terminals are arranged on the secondary coil, the three transformation output terminals are connected at different turns of the secondary coil, three control boxes are arranged in the control cavity, a controller is arranged in each control box, the transformation output terminals are respectively connected with a corresponding controller through copper bars, the output end of each controller is provided with a control switch, the common output terminal is connected with each control switch through copper bars, the bottom of the control box is provided with an air inlet, the top of the control box is provided with an air outlet, the air outlet of the top of the control box is provided with a first exhaust fan, the top of the control box is provided with a pipeline, the pipeline is arranged at the top of the control box and the exhaust box is extended to the top of the second exhaust box corresponding to the top of the air outlet of the control box.

And circulating fans are arranged at the bottoms of the box bodies at two sides below the primary coil and the secondary coil, and the circulating fans blow upwards.

The high-current three-gear transformer can convert 10000V voltage into low voltage and output the low voltage by using 1500A current, so that high-current output is realized, heat generated by the controller in the working process is directly discharged to the outside of the box body through the heat in the first exhaust fan control box, the temperature rise in the whole control cavity caused by the circulation in the control cavity is avoided, the normal operation of the controller is influenced, and the heat dissipation is more thorough and stable through direct heat dissipation of an exhaust pipeline.

Drawings

FIG. 1 is a front elevational view of the structure of the present utility model;

fig. 2 is a top view of the structure of the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

Example 1:

as shown in fig. 1 and 2, the utility model discloses a heavy-current three-gear transformer, which comprises a box body 1, an iron core 3, a primary coil and a secondary coil 4, wherein the iron core 3, the primary coil and the secondary coil 4 are arranged in the box body 1, the iron core 3 is wound by the primary coil and the secondary coil 4, a vertical partition plate 2 is arranged in the box body 1, the partition plate 2 divides the box body 1 into two independent cavities, namely a control cavity 14 and a transformation cavity 13, the primary coil and the secondary coil 4 are arranged in the transformation cavity 13, a common output terminal 6 and three transformation output terminals 5 are arranged on the secondary coil 4, the three transformation output terminals 5 are connected at different turns positions of the secondary coil 4, three control boxes are arranged in the control cavity 14, a controller 7 is arranged in each control box, the variable-pressure output terminal 5 is connected with a corresponding controller 7 through copper bars, the output end of each controller 7 is provided with a control switch 10, the public output terminal 6 is connected with each control switch 10 through copper bars, an air inlet is formed in the bottom of each control box, an air outlet is formed in the top of each control box, a first exhaust fan 8 is arranged at the air outlet of the top of each control box, an exhaust pipeline 9 is arranged at the top of each control box, the exhaust pipeline 9 extends to the outside of the box 1, and a second exhaust fan 12 is arranged at the top of the box 1 at the position corresponding to the variable-pressure cavity 13.

The bottom of the box body 1 at two sides below the primary coil and the secondary coil 4 is provided with a circulating fan 11, and the circulating fan 11 blows air upwards.

The transformer body formed by the primary coil, the secondary coil 4 and the iron core 3 is a three-phase multi-tap dry-type transformer, and is provided with a conventional three-phase input side and a multi-tap voltage and current gear output side, and is wound by a plurality of layers of copper foils in the output side; the copper foil strips wound by different current gears are overlapped and wound by the foil strips with different thickness layers, so that the cost can be saved and the radial size can be reduced as much as possible under the condition of meeting the requirement, and the size and the strength of the tap busbar are ensured by using the insulator for fixing between the multi-tap busbar. And then, the integral winding is subjected to VPI dipping and curing treatment, so that the winding strength is better and the insulation strength is better.

The controller 7 can realize the switching between the output terminal busbar so as to realize the change of output current and voltage. The heat that controller 7 produced in the course of the work is located the control box, and exhaust duct 9 and the first exhaust fan 8 at control box top directly discharge the heat to the box 1 outside, and the outside cold air of box 1 then gets into control chamber 14 and control box inside to guaranteed the temperature of controller 7 and kept stable, promote the stability in use and the life of controller 7.

The circulating fan 11 is arranged at the lower end of the transformation cavity 13 where the primary coil and the secondary coil 4 are located, so that air in the transformation cavity 13 can be blown upwards, and hot air in the transformation cavity 13 is conveyed outwards by matching with the second exhaust fan 12, so that the temperature in the transformer is ensured to be kept stable, and a good cooling effect is achieved on the primary coil and the secondary coil 4. Of course, an air inlet hole needs to be formed in the side wall of the lower end of the box body 1 so as to keep the air pressure in the box body 1 balanced.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be in interaction relationship with two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (2)

1. The utility model provides a heavy current three keeps off position transformer, includes box and sets up iron core, primary coil, secondary coil in the box, primary coil and secondary coil are around establishing on the iron core, characterized by: the box body is divided into two independent cavities by the partition plate, the two independent cavities are respectively a control cavity and a transformation cavity, the primary coil and the secondary coil are arranged in the transformation cavity, a public output terminal and three transformation output terminals are arranged on the secondary coil, the three transformation output terminals are connected to different turns of the secondary coil, three control boxes are arranged in the control cavity, a controller is arranged in each control box, the transformation output terminals are respectively connected with a corresponding controller through copper bars, the output end of each controller is provided with a control switch, the public output terminals are connected with each control switch through copper bars, an air inlet is formed in the bottom of each control box, an air outlet is formed in the top of each control box, a first exhaust fan is arranged at the air outlet of the top of each control box, an exhaust pipeline is arranged at the top of each control box and extends to the outside of the box, and a second exhaust fan is arranged at the top of the box where the transformation cavity corresponds.

2. A high current three-gear transformer according to claim 1, characterized in that: and circulating fans are arranged at the bottoms of the box bodies at two sides below the primary coil and the secondary coil, and the circulating fans blow upwards.