CN215911289U - High-efficient radiating dry-type transformer - Google Patents

Abstract

The utility model relates to the technical field of transformers, in particular to a high-efficiency heat-dissipation dry-type transformer, which comprises a transformer shell and a transformer body arranged in the transformer shell, wherein the transformer body comprises a transformer iron core and a coil wound on the transformer iron core, the transformer iron core comprises a plurality of stacked silicon steel sheets, and a heat dissipation opening is formed in the transformer shell; an insulating heat-conducting material layer is also clamped between two adjacent silicon steel sheets; each insulating heat conduction material layer extends to the outside of the transformer iron core to form a heat conduction bridge arm; and after each heat conduction bridge arm penetrates through a heat dissipation opening in the transformer shell and extends to the outside of the transformer shell, sealant is filled in the heat dissipation opening. This high-efficient radiating dry-type transformer can be conducted the outside fast and realize dispelling the heat fast with the heat that transformer core produced.

Description

High-efficient radiating dry-type transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to a dry-type transformer capable of efficiently dissipating heat.

Background

The dry-type transformer is widely applied to electricity utilization places such as local illumination, high-rise buildings, airports and the like. The transformer iron core is one of the main components of the dry-type transformer, and consists of an iron core consisting of silicon steel sheets and a coil poured by epoxy resin. In the operation process of the dry-type transformer, heat is generated, mainly the transformer core generates heat, and therefore the heat of the transformer core needs to be dissipated.

In the conventional heat dissipation method of the dry-type transformer, a heat dissipation fan is installed below the dry-type transformer, for example, the dry-type transformer disclosed in chinese patent application publication No. CN106504857A, which is applied in 2017, 01, 04, and the dry-type transformer performs air cooling heat dissipation by installing a fan on a base.

In addition, as disclosed in chinese patent application publication No. CN110415928A, which is applied for 26/08/2019, a double-ended wind cooling dry-type transformer is provided, in which a top exhaust fan and a bottom blower fan are provided to cool the transformer by wind.

In the actual use process, when the cooling fan works, dust and moisture in the outside air can be brought into the dry-type transformer, so that the surface of the transformer iron core is stained with dust, and the heat dissipation is influenced; and in humid weather, more moisture is brought into the inside of the dry type transformer, possibly causing circuit failure.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above problems, the present invention provides a dry-type transformer with high heat dissipation efficiency, which can quickly conduct heat generated by a transformer core to the outside to achieve quick heat dissipation.

In order to achieve the purpose, the utility model adopts the following technical scheme: a high-efficiency heat-dissipation dry-type transformer comprises a transformer shell and a transformer body arranged inside the transformer shell, wherein the transformer body comprises a transformer iron core and a coil wound on the transformer iron core, and the transformer iron core comprises a plurality of silicon steel sheets which are stacked;

the transformer shell is provided with a heat dissipation port;

an insulating heat-conducting material layer is also clamped between two adjacent silicon steel sheets;

each insulating heat conduction material layer extends to the outside of the transformer iron core to form a heat conduction bridge arm;

and after each heat conduction bridge arm penetrates through a heat dissipation opening in the transformer shell and extends to the outside of the transformer shell, sealant is filled in the heat dissipation opening.

Furthermore, a circle of heat insulation gasket is sleeved in the heat dissipation port, and each heat conduction bridge arm penetrates through the heat insulation gasket and extends to the outside of the transformer shell.

Furthermore, a heat dissipation fan is arranged outside the transformer shell at the position of the heat dissipation port.

Further, the temperature controller and the temperature sensor are also included;

the temperature sensor is arranged in the transformer shell;

the temperature sensor and the cooling fan are respectively electrically connected with the temperature controller.

By adopting the technical scheme, the utility model has the beneficial effects that: in the working process of the high-efficiency heat dissipation dry-type transformer, heat generated by each silicon steel sheet in the transformer core is conducted to the insulating heat conduction material layer, and the heat conduction bridge arm of the insulating heat conduction material layer penetrates out of the transformer shell to dissipate heat.

Furthermore, a heat radiation fan for radiating heat of the heat conducting bridge arm is arranged outside the transformer shell. When the temperature sensor detects that the temperature in the transformer shell exceeds a set value, the temperature controller controls the radiating fan to work, and the heat of the silicon steel sheet is quickly conducted to the outside of the transformer shell through the insulating heat conduction material layer to be radiated.

Drawings

Fig. 1 is a schematic structural diagram of a dry-type transformer with efficient heat dissipation according to an embodiment of the utility model;

FIG. 2 is a cross-sectional view of a transformer core of an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an insulating and heat conducting material layer according to an embodiment of the present invention;

fig. 4 is a circuit connection block diagram of an embodiment of the utility model.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1, fig. 2, fig. 3, and fig. 4, the embodiment provides a high-efficiency heat-dissipating dry-type transformer, which includes a transformer housing 1 and a transformer body 2 disposed inside the transformer housing 1, where the transformer body 2 includes a transformer core 21 and a coil 22 wound around the transformer core 21, the transformer core 21 includes a plurality of stacked silicon steel sheets 210, and the structure of the dry-type transformer is an existing structure.

The improvement point of the high-efficiency radiating dry-type transformer is as follows:

the transformer shell 1 is provided with a heat dissipation opening 10, and a circle of heat insulation gasket 4 is sleeved in the heat dissipation opening 10. The heat insulation gasket 4 is made of glass fiber.

Insulating heat conduction material layer 23 is still sandwiched between two adjacent silicon steel sheets 210 in transformer core 21, in this embodiment, preferably, insulating heat conduction material layer 23 adopts high temperature resistant heat conduction silica gel.

Each insulating heat conduction material layer 23 extends to the outside of the transformer core 21 to form a heat conduction bridge arm 231; each of the thermally conductive arms 231 extends to the outside of the transformer housing 1 through the thermal insulating gasket 4, and then the heat dissipation opening 10 is filled with a sealant (not shown).

And a heat radiation fan 5 is arranged outside the transformer shell 1 at the position of the heat radiation port 10.

The temperature sensor 6 is arranged inside the transformer shell 1 and used for detecting the temperature inside the transformer shell 1.

The transformer is characterized by further comprising a temperature controller 7, wherein the temperature controller 7 is arranged outside the transformer shell 1. The heat radiation fan 5 and the temperature sensor 6 are electrically connected with the temperature controller 7 through insulated wires (not shown in the figure). The temperature controller 7 sets a temperature threshold inside the transformer housing 1 in advance, and in this embodiment, the temperature threshold is set to be 95 ℃.

In the working process of the high-efficiency heat-dissipation dry-type transformer, heat generated by each silicon steel sheet 210 in the transformer core 21 is conducted out of the transformer shell 1 through the heat conducting bridge arm 231 of the insulating heat conducting material layer 23. And when the temperature sensor 6 detects that the temperature in the transformer housing 1 exceeds a set temperature threshold, the temperature controller 7 controls the heat radiation fan 5 to work, and the heat of the silicon steel sheets 210 is quickly conducted to the outside of the transformer housing 1 through the insulating heat conduction material layer 23 to be radiated.

Because the heat dissipation opening 10 is sealed, when the heat fan 5 works, external dust and moisture cannot be sucked into the transformer housing 1.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (4)

1. The utility model provides a high-efficient radiating dry-type transformer, includes transformer housing and sets up the transformer body inside transformer housing, transformer body includes transformer core and the coil of coiling on transformer core, transformer core includes that the polylith folds the silicon steel sheet of establishing, its characterized in that:

the transformer shell is provided with a heat dissipation port;

an insulating heat-conducting material layer is also clamped between two adjacent silicon steel sheets;

each insulating heat conduction material layer extends to the outside of the transformer iron core to form a heat conduction bridge arm;

and after each heat conduction bridge arm penetrates through a heat dissipation opening in the transformer shell and extends to the outside of the transformer shell, sealant is filled in the heat dissipation opening.

2. A high efficiency heat dissipating dry-type transformer as claimed in claim 1, wherein: a circle of heat insulation gasket is sleeved in the heat dissipation port, and each heat conduction bridge arm penetrates through the heat insulation gasket and extends to the outside of the transformer shell.

3. A high efficiency heat dissipating dry-type transformer as claimed in claim 1 or 2, wherein: and a heat radiation fan is arranged at the position of the heat radiation port outside the transformer shell.

4. A high efficiency heat dissipating dry-type transformer as claimed in claim 3, wherein: also comprises a temperature controller and a temperature sensor;

the temperature sensor is arranged in the transformer shell;

the temperature sensor and the cooling fan are respectively electrically connected with the temperature controller.

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