CN220491704U - Dry-type transformer heat sink - Google Patents

Abstract

The utility model discloses a cooling device for a dry-type transformer, and relates to the technical field of cooling of dry-type transformers. The dry-type transformer cooling device comprises a dry-type transformer main body, an air pipe, a water tank, a water pipe and a hot water generator, wherein the dry-type transformer is placed on the suspended ground, the lower part of the air pipe is connected with the upper part of a shell of the dry-type transformer, the upper part of the air pipe is connected with the water tank, the water tank is positioned above a distribution room, and the water pipe is connected with the water tank and the hot water generator. The cooling device for the dry type transformer can effectively reduce the overall temperature of the dry type transformer body and the distribution room, and simultaneously, the waste heat is utilized to generate power, so that the purpose of energy saving is achieved.

Description

Dry-type transformer heat sink

Technical Field

The utility model relates to the technical field of cooling of dry transformers, in particular to a cooling device of a dry transformer.

Background

The dry-type transformer (dry-type transformer) is a transformer with iron cores and windings not immersed in insulating oil, and has the characteristics of safety, fire prevention, no pollution, high mechanical strength, strong short circuit resistance and the like. Dry transformers are widely used for local lighting, high-rise buildings, airports, wharf CNC machinery, etc. The cooling modes are mainly classified into natural air cooling (AN) and forced air cooling (AF). The common dry-type transformer cooling fan is arranged at two sides of the lower part of the transformer coil, and cold air is directly blown into high-voltage and low-voltage cooling air channels of the transformer coil, so that the heat dissipation effect is obvious, the normal operation of the transformer can be ensured, and the service life of the transformer can be prolonged. Although the heat dissipation fan can effectively reduce the heat of the dry-type transformer, the dissipated heat is accumulated in the power distribution room, so that the overall temperature of the power distribution room is increased, and the heat dissipation efficiency of the heat dissipation fan of the dry-type transformer is reduced. Meanwhile, heat generated by the dry-type transformer is one of losses generated in normal operation of the dry-type transformer, and is not effectively utilized, so that energy waste is caused.

Disclosure of Invention

The utility model aims to solve the technical defects and provides the cooling device for the dry-type transformer, which reduces the running temperature of the dry-type transformer, reduces the overall temperature of a distribution room and recycles heat.

The utility model discloses a cooling device of a dry-type transformer, which comprises:

the dry type transformer comprises a dry type transformer body, a dry type transformer shell and a heat dissipation fan;

a water tank;

the heating coil is arranged in the water tank, and two ends of the heating coil extend to the outside of the water tank;

a hot water generator;

the water pipe is connected with the water tank and the hot water generator;

and the air pipe is connected with the heating coil above the transformer shell and in the water tank.

Further, the dry-type transformer housing is fixed at the floor top through a pull rod, the dry-type transformer main body is suspended above the ground, and the pull rod is a screw rod.

Further, the lower part of the air pipe covers the upper part of the dry-type transformer shell and is connected in a sealing way.

Further, a glass fiber reinforced plastic negative pressure explosion-proof fan is arranged in the air pipe and used for accelerating air circulation in the air pipe.

Further, the water pipe is connected with the water tank and the hot water generator in a sealing way.

The cooling device for the dry-type transformer can effectively reduce the temperature of the body of the dry-type transformer and the room temperature of a distribution room, and can utilize waste heat to generate power so as to recycle the lost energy.

Drawings

FIG. 1 is a schematic 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, the present utility model discloses a cooling device for a dry-type transformer, comprising:

a dry-type transformer body including a dry-type transformer body 7, a dry-type transformer housing 9, and a heat radiation fan 6; the cooling fan 6 sucks air in the distribution room 14 into the shell 9 of the dry-type transformer to cool the main body of the dry-type transformer;

a water tank 10 for containing a heat-conducting medium, typically water, the water tank 10 having a water inlet port;

a heating coil 11, the heating coil 11 being disposed inside the water tank 10, and both ends of the heating coil 11 extending to the outside of the water tank 10; one end of the heating coil 11 is connected with the air pipe 2, and hot air generated by the dry type transformer enters the heating coil 11 through the air pipe 2 to heat a heating medium in the water tank 10;

the hot water generator 12 is an existing product, and the specific structure is not described here;

a water pipe 13, the water pipe 13 connecting the water tank 10 and the hot water generator 12; the water pipe 13 conveys the hot water in the water tank 10 to the hot water generator 12, and of course, a conveying pump can be arranged on the water pipe 13;

the air pipe 2 is connected with a heating coil 11 above the transformer shell 9 and in the water tank 10.

The dry type transformer shell 9 is fixed at the top of a floor through a pull rod, the dry type transformer body is suspended above the ground, and the pull rod is a screw rod 1 and is used for increasing the contact area between the dry type transformer body and air and increasing the air inlet quantity of the heat dissipation fan 6; the dry type transformer main body is fixed on the floor top by adopting the screw rod 1, and the height position of the dry type transformer main body can be adjusted by the cooperation of the screw rod 1 and the nut.

The air duct 2 covers the upper part of the dry-type transformer housing 9 and is in sealing connection, so that hot air generated by the dry-type transformer body can be completely collected and conveyed to the heating coil 11 through the air duct 2. In addition, because the upper part of the dry-type transformer shell 9 is originally provided with the heat dissipation circular through hole, the air pipe 2 and the transformer shell 9 are only required to be connected with a sealing rubber ring at the interface without re-opening, and any high-temperature-resistant sealing measure can be adopted. The air pipe 2 is connected with the top layer of the power distribution room 14 through the screw rod 1, the connection position of the screw rod 1 and the air pipe 2 only needs to limit the horizontal movement of the air pipe 2, the air pipe 2 can be adjusted to be capable of vertically distance through the screw rod 1, and the air pipe can be adapted to dry type transformers with different sizes; the other end of the air pipe 2 is connected with a heating coil 11 in the water tank 10, and the water in the water tank 10 is heated by using waste heat through the heating coil 11 in the water tank 10;

the glass fiber reinforced plastic negative pressure explosion-proof fan 3 is arranged in the air pipe 2 and used for accelerating air circulation in the air pipe 2 so as to achieve a better heat dissipation effect. The cooling fan 6 sucks external cold air into the dry-type transformer shell 9, heat is transferred from a high-temperature object to a low-temperature object due to heat conduction, the heat in the transformer is transferred to the cold air, the cold air is heated due to expansion and contraction, the density of the heated cold air is reduced, the cold air moves upwards and is discharged through the air pipe 2 above, meanwhile, the glass fiber reinforced plastic explosion-proof negative pressure fan 3 in the air pipe 2 is used for pumping hot air from the transformer and conveying the hot air into the heating coil 11 by utilizing the convection of air through manufacturing high-low pressure difference.

The water pipe 13 is connected with the water tank 10 and the hot water generator 12 in a sealing manner.

The water tank 10 is arranged on the top layer of the distribution room 14, the water tank 10 is connected with the hot water generator 12 through a water pipe 13, the water tank 10 supplies hot water to the hot water generator 12 through the water pipe 13, and the temperature of the hot water depends on the temperature required by the hot water generator 12.

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 (5)

1. A dry-type transformer cooling device, comprising:

the dry type transformer comprises a dry type transformer body (7), a dry type transformer shell (9) and a heat dissipation fan (6);

a water tank (10);

the heating coil (11) is arranged in the water tank (10), and two ends of the heating coil (11) extend to the outside of the water tank (10);

a hot water generator (12);

a water pipe (13), the water pipe (13) connecting the water tank (10) and the hot water generator (12);

the air pipe (2) is connected with the heating coil (11) above the transformer shell (9) and in the water tank (10).

2. A dry transformer cooling device according to claim 1, characterized in that the dry transformer housing (9) is fixed on the floor top by means of a tie rod (1), the dry transformer body is suspended above the ground, and the tie rod (1) is a screw rod.

3. A dry transformer cooling device according to claim 1, characterized in that the air duct (2) covers the dry transformer housing (9) from below and is connected in a sealed manner.

4. A dry-type transformer cooling device according to claim 3, characterized in that a glass fiber reinforced plastic negative pressure explosion-proof fan (3) is installed in the air duct (2) for accelerating the ventilation in the air duct (2).

5. A dry transformer cooling device according to any one of claims 1-4, characterized in that the water pipe (13) is sealingly connected to the water tank (10) and the hot water generator (12).