CN219626438U

CN219626438U - Dry-type transformer

Info

Publication number: CN219626438U
Application number: CN202321263553.7U
Authority: CN
Inventors: 赵路; 周喜峰; 孟维凯; 王国强; 段晓超; 刘东侠
Original assignee: Guoneng Shanxi Hequ Power Generation Co ltd; National Energy Group Guoyuan Power Co Ltd
Current assignee: Guoneng Shanxi Hequ Power Generation Co ltd; National Energy Group Guoyuan Power Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-09-01
Anticipated expiration: 2033-05-23

Abstract

The present disclosure relates to a dry-type transformer, comprising: a housing formed with a plurality of first vents; a main body disposed within the housing; a slideway mounted at a bottom position within the housing; a tray slidably mounted on the slideway; a cooling device mounted on the tray and located at the lower side of the main body; and the fan unit is arranged on the outer wall of the shell, an air inlet is formed in the position, corresponding to the fan unit, of the shell, and a maintenance opening is formed in the position, corresponding to one side end part of the slideway, of the shell. By the design, when the cooling device of the dry-type transformer fails, the fan set can ensure the cooling condition of the transformer, and an operator only needs to slide the tray along the slideway and take out from the maintenance port for maintenance, so that the operation of the dry-type transformer is not required to be stopped for maintaining the cooling device. In addition, when cooling device does not break down, can increase gas flow rate with fan group cooperation, promote the cooling effect.

Description

Dry-type transformer

Technical Field

The present disclosure relates to the field of dry transformer cooling, and in particular, to a dry transformer.

Background

Dry transformers are widely used in electric power systems, factories and mines for distribution, high-rise buildings, airports, wharf CNC mechanical equipment and other places, and simply stated, dry transformers refer to transformers in which iron cores and windings are not immersed in insulating oil. In order to achieve the effect of heat dissipation and cooling of the dry-type transformer during operation, a cooling device is generally provided on the underside of the main body portion of the dry-type transformer. However, when the cooling device fails, the operation of the transformer needs to be stopped to avoid overheating of the main body, which affects the long-period stable operation of the transformer. On the other hand, the cooling device can only meet the basic heat dissipation requirement, but cannot meet the cooling requirement when the dry-type transformer is in a high-load working state, so that the overload capacity of the dry-type transformer is poor, and the service life is reduced.

Disclosure of Invention

It is an object of the present disclosure to provide a dry type transformer to at least partially solve the problems existing in the related art.

In order to achieve the above object, the present disclosure provides a dry-type transformer comprising: a housing formed with a plurality of first vents; a main body disposed within the housing; a slideway mounted at a bottom position within the housing; a tray slidably mounted on the slideway; a cooling device mounted on the tray and located at the lower side of the main body; and the fan unit is arranged on the outer wall of the shell, an air inlet is formed in the position, corresponding to the fan unit, of the shell, and a maintenance opening is formed in the position, corresponding to one side end part of the slideway, of the shell.

Optionally, the slideway is configured as a long strip groove with a U-shaped cross section, and the tray is configured as a plate and is movably arranged in the groove of the slideway.

Optionally, a limit bolt is arranged at the bottom of the slideway and used for limiting the movement of the tray along the extending direction of the slideway.

Optionally, a handle is disposed at one end of the tray near the maintenance port.

Optionally, a detachable first baffle is arranged at the maintenance port, and a plurality of second ventilation ports are formed on the first baffle.

Optionally, the air conditioner further comprises a second baffle plate movably arranged on the outer side of the air conditioner group, and a plurality of third air vents are formed in the second baffle plate.

Optionally, the upper edge of the second baffle is hinged on the outer wall of the shell through a plurality of hinges, a notch is formed on the outer wall of the shell, and the fan set is installed in the notch, so that the fan set avoids the second baffle.

Optionally, the maintenance port is located at the lower side of the fan set, and the second baffle plate is configured to cover the fan set and the maintenance port.

Optionally, the fan set includes at least two cooling fans.

Optionally, a fan power supply for supplying power to the fan set is further included.

Through the technical scheme, when the cooling device of the dry-type transformer fails, the fan set can continue to work to ensure the cooling condition of the dry-type transformer, and an operator only needs to slide the tray along the slideway and take out from the maintenance port for maintenance and replacement. By the design, the operation of the dry-type transformer is not required to be stopped for maintaining and replacing the cooling device, and the influence on the field operation efficiency is avoided. In addition, when cooling device did not break down, it can use with fan group cooperation, and then can increase the flow rate of cooling gas to promote the cooling effect.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:

fig. 1 is a side view of a dry-type transformer, with portions in section, shown schematically in accordance with the present disclosure;

FIG. 2 is a front view of the dry-type transformer shown in FIG. 1, with portions in section;

FIG. 3 is a front view of another dry-type transformer, shown schematically in accordance with the present disclosure, with portions in section;

fig. 4 is an assembled schematic view of a skid, pallet, and cooling device, shown exemplary in accordance with the present disclosure.

Description of the reference numerals

100-a housing; 101-a first vent; 102-an air inlet; 103-a maintenance port; 200-a main body; 310-slideway; 320-tray; 400-cooling device; 510-cooling fans; 610-a first baffle; 620-a second baffle; 700-hinges; 800-notch.

Detailed Description

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.

In this disclosure, unless otherwise indicated, terms of orientation such as "inner, outer," "top, bottom," "upper, and lower" may be used based on the structure of the relevant component itself, or may be used based on the orientation of the relevant component when used in conjunction with, for example: the slideway installed at the bottom position of the shell is installed in the containing space of the shell and is positioned in the containing space and close to the ground; the "underside" of the body means that the cooling device is located on the side of the body that is closer to the ground; the fan set is mounted on the outer wall of the shell, namely, the fan set is positioned on the outer side of the accommodating space of the shell and is mounted on the wall surface of the shell.

In this disclosure, the terms "first," "second," and the like are used to distinguish one element from another without sequence or importance. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated.

Referring to fig. 1-3, in an embodiment of the present disclosure, there is provided a dry-type transformer including: the fan assembly includes a housing 100 formed with a plurality of first vents 101, a main body 200 provided in the housing 100, a slide 310 installed at a bottom position in the housing 100, a tray 320 slidably installed on the slide 310, a cooling device 400 installed on the tray 320 and located at a lower side of the main body 200, and a fan group installed at an outer wall of the housing 100. The air inlet 102 is formed at a position of the housing 100 corresponding to the fan set, and the maintenance opening 103 is formed at a position of the housing 100 corresponding to one side end of the slide 310. By providing the fan group and the air inlet 102, external air can be blown into the housing 100 through the fan group to cool the interior. It should be noted that the cooling device 400 refers to a device for cooling the main body 200 mounted on the lower side of the main body 200, and may include a motor, a fan, an air duct, etc., which is not limited by the present disclosure since the structure and principle of the cooling device of the dry type transformer are well known to those skilled in the art.

Referring to fig. 1, the present disclosure is not limited to the number, shape and location of the first ventilation openings 101, for example, in some embodiments, the first ventilation openings 101 may be a plurality of round holes formed on the housing 100, which are mainly distributed at positions near the top and near the bottom of the housing 100, and thus the cooling air is formed from the bottom to the top by the cooling device located at the bottom, so as to cool the main body 200 at the middle position. Furthermore, in other embodiments, the first vent 101 may be configured as a small rectangle and formed with fins to enable a guiding effect on the airflow.

The present disclosure is not limited to the driving form of the slide 310 and the tray 320, and for example, it may be dragged by a handle to be described later. Furthermore, in other embodiments, it may be electric, or pneumatic. When the electric power is electric, the electric power can be driven through a crank block structure, or can be driven through a screw rod structure.

By using the above technical solution, when the cooling device 400 of the dry-type transformer fails, the fan set can continue to operate to ensure the cooling condition of the dry-type transformer, and an operator only needs to slide the tray 320 along the slide way 310 and take out the tray from the maintenance port 103 for maintenance and replacement. By such a design, it is not necessary to stop the operation of the dry type transformer for maintenance and replacement of the cooling device 400, and the field operation efficiency is not affected. In addition, when the cooling device 400 does not fail, it can be used in combination with the fan set, so as to increase the flow rate of the cooling gas, thereby improving the cooling effect.

Referring to fig. 4, in an embodiment of the present disclosure, the chute 310 may be configured as an elongated slot having a U-shaped cross section, and the tray 320 may be configured as a plate and movably disposed in the slot of the chute 310. The cooling device 400 may be taken out of the housing 100 or the cooling device 400 may be fed into the housing 100 by the movement of the tray 320 within the slide 310. Furthermore, in other embodiments, in order to allow the tray 320 to move more easily in the chute 310, the bottom of the tray 320 may be mounted with a pulley, and the chute 310 may be formed with a sliding groove that mates with the pulley.

To prevent the cooling device 400 from following the tray 320 in the extending direction of the slideway 310 due to external force or other factors when in operation. In an embodiment of the present disclosure, the groove bottom of the slideway 310 may be provided with a limit bolt (not shown in the drawings) for limiting the movement of the tray 320 in the extending direction of the slideway 310. In use, after the tray 320 is pushed into place, the limit screws are screwed into the bottom of the slideway 310 to prevent the tray 320 from moving. When the tray 320 needs to be taken out, the limit screw is only required to be screwed out. Alternatively, in other embodiments, the ends of the tray 320 may be lifted directly and pulled out from above the stop screws. In addition to the stop screws described above, in other embodiments, the tray 320 may be prevented from moving in the extending direction of the slideway 310 by other locking mechanisms (e.g., a plug, etc.), which is not a limitation of the present disclosure.

In an embodiment of the present disclosure, in order to be able to pull the tray 320 out of the housing 100, an end of the tray 320 near the service port 103 may be provided with a handle (not shown in the drawings). In use, the tray 320 can be pulled out by simply holding the handle.

The present disclosure is not limited to the structure of the handle, for example, two mounting holes are formed on the tray 320, and the flexible string is sequentially passed through the two mounting holes to form the handle. In addition, in other embodiments, the handle may be made of a metallic material that may be mounted to the tray 320 by welding or bolts or the like.

Referring to fig. 3, in an embodiment of the present disclosure, a detachable first baffle 610 may be provided at the service port 103, and a plurality of second ventilation ports (not shown) may be formed on the first baffle 610. The cooling device 400 may be protected by providing the first baffle 610, and the second ventilation port may ensure that external air enters the housing 100. When the cooling device 400 needs to be maintained or replaced, only the first shutter 610 needs to be opened. The present disclosure is not limited as to how the first flap 610 is mounted to the service port 103, and may be bolted or may be hinged.

Referring to fig. 1 to 3, in an embodiment of the present disclosure, the dry type transformer may further include a second baffle 620 movably disposed at an outer side of the fan group, and a plurality of third air vents (not shown) may be formed on the second baffle 620. Wherein, the second baffle 620 may protect the fan set, and the third ventilation port may ensure that the external air is sent into the housing 100 by the fan set. When the fan set needs to be maintained or replaced, only the second baffle 620 needs to be opened.

The present disclosure is not limited to the structure of the second barrier 620, for example, referring to fig. 2 to 3, in the embodiment of the present disclosure, an upper edge of the second barrier 620 may be hinged to an outer wall of the housing 100 by a plurality of hinges 700, the outer wall of the housing may be formed with a recess 800, and a fan set may be installed in the recess 800 such that the fan set may avoid the second barrier 620. The present disclosure is not limited to the number of hinges 700, which may be three, four, etc. When installed, one side of the hinge 700 may be fixed to the housing 100, and the other side may be fixed to the second barrier 620, so that the second barrier 620 may rotate with respect to the housing 100. In addition, in other embodiments, the second baffle 620 may be removably attached by bolts.

Referring to FIG. 2, in some embodiments, the service port 103 may be located on an underside of the wind turbine assembly and the second baffle 620 may be sized to shield the wind turbine assembly and the service port 103. By such design, only one second baffle 620 is needed to shield the fan set and the cooling device 400, and the first baffle 610 can be omitted.

Referring to fig. 2-3, in an embodiment of the present disclosure. The fan set may include at least two cooling fans 510, which may be three, four, etc., for example. The plurality of cooling fans 510 may operate independently of one another to enable the remaining cooling fans 510 to continue to operate in the event of a failure of one of the cooling fans.

In embodiments of the present disclosure, the dry transformer may further include a fan power supply (not shown) for supplying power to the fan set. The fan set adopts independent power supply, can ensure to change the maintenance on line when the fan set breaks down, make dry-type transformer can long period safe and stable operation.

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.

In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.

Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.

Claims

1. A dry-type transformer, comprising:

a housing formed with a plurality of first vents;

a main body disposed within the housing;

a slideway mounted at a bottom position within the housing;

a tray slidably mounted on the slideway;

a cooling device mounted on the tray and located at the lower side of the main body; and

the fan group is arranged on the outer wall of the shell,

the fan unit comprises a shell, a fan group, a slide way, a fan, an air inlet, a maintenance opening, a fan cover and a fan cover, wherein the air inlet is formed in the position of the shell, corresponding to the fan group, and the maintenance opening is formed in the position of the shell, corresponding to one side end part of the slide way.

2. The dry-type transformer according to claim 1, wherein the slideway is constructed as a long-strip groove with a U-shaped cross section, and the tray is constructed as a plate and is movably disposed in the groove of the slideway.

3. The dry transformer according to claim 2, wherein a groove bottom of the slideway is provided with a limit bolt for limiting the movement of the tray in the extending direction of the slideway.

4. The dry transformer of claim 1, wherein an end of the tray adjacent to the service port is provided with a handle.

5. The dry-type transformer of claim 1, wherein the maintenance port is provided with a detachable first baffle plate, and a plurality of second ventilation ports are formed on the first baffle plate.

6. The dry transformer of claim 1, further comprising a second baffle movably disposed outside the fan assembly, the second baffle having a plurality of third vents formed thereon.

7. The dry transformer of claim 6, wherein the upper edge of the second baffle is hinged to the outer wall of the housing by a plurality of hinges, the outer wall of the housing is formed with a recess, and the fan set is mounted in the recess such that the fan set is clear of the second baffle.

8. The dry transformer of claim 7 wherein the service opening is located on an underside of the fan assembly, the second baffle being sized to conceal the fan assembly and the service opening.

9. The dry transformer of claim 1, wherein the fan set comprises at least two cooling fans.

10. The dry transformer of claim 1, further comprising a fan power supply that powers the fan set.