KR102411062B1 - Super slim type pad transformer - Google Patents

Abstract

The present invention relates to an ultra-slim pad transformer that reduces the front and rear width of the pad transformer compared to the prior art, as well as increases the heat dissipation effect and is configured to be easy to manufacture. A first body box having a front and rear width corresponding to the size; And while forming a narrow width compared to the front and rear width of the first body box is formed in communication from the rear of the lower surface of the first body box in the downward direction, at least one STP (Switch Type Protector) and a high-pressure and low-pressure connection terminal is formed in the front And at least one CL (Current Limited) fuse is built-in the second body box; relates to an ultra-slim pad transformer that is configured to include.

Description

SUPER SLIM TYPE PAD TRANSFORMER

The present invention relates to an ultra-slim pad transformer, and more particularly, to an ultra-slim pad transformer configured to reduce the front and rear width of the pad transformer as compared to the prior art, as well as increase the heat dissipation effect and facilitate manufacturing.

A pad transformer is a ground structure installed on the side of a road or sidewalk, and it can worsen the walking conditions for pedestrians, and when installed in front of a shopping mall, it can interfere with the goodwill in front of the shopping mall.

In general, transformers and switchgear are installed as a ground structure for distribution. The front and rear width (Depth) of the switchgear is 800mm, whereas the front and rear width of the transformer is 1,250mm. The state is recognized as a ground structure.

In addition, the pad transformer includes STP (Switch Type Protector) that operates during overload to protect the core and coil of the transformer and prevent secondary ripple accidents, and CL (Switch Type Protector) that operates in the high current range such as line failure accidents. Current Limited) fuse is built-in. However, a lot of work is required, such as wiring from the primary bushing well located in front of the pad transformer to the internal CL fuse, STP switch, and winding. There is a problem of excessive consumption.

(0001) Domestic Registered Utility Model Publication No. 20-0346233 (0002) Domestic Public Utility Model Publication No. 20-2010-0005360

The technical problem to be solved by the present invention is to reduce the front and rear width by configuring the pad transformer, which was composed of only one body box of a rectangular parallelepiped shape, with the first body box formed on the upper part and the second body box formed on the lower part of the first body box, An object of the present invention is to provide an ultra-slim pad transformer with a reduced front and rear width compared to the prior art.

Another technical problem to be solved by the present invention is an ultra-slim pad transformer in which a transformer is configured in a first body box, a CL (Current Limited) fuse, STP (Switch Type Protector), and high and low voltage connection terminals are formed in the second body box is to provide

Another technical problem to be solved by the present invention is to provide an ultra-slim pad transformer configured to easily perform lead wire connection work by forming a lead withdrawal position of a transformer winding at the rear of the transformer.

Another technical problem to be solved by the present invention is to provide an ultra-slim pad transformer with improved cooling efficiency by installing radiators on all four sides of the front, rear, left, and right sides of the main box.

Another technical problem to be solved by the present invention is to configure the CL fuse, STP, and high-pressure and low-pressure connection terminals in the second body box located at the bottom of the first body box, thereby reducing the total front and rear width (Depth) of the pad transformer from 1,250 mm. It is to provide an ultra-slim pad transformer reduced to 800 mm.

The present invention for achieving the above technical problem is an ultra-slim pad transformer, a first body box in which a transformer is built-in, the front and rear widths are formed to a size corresponding to the front and rear widths of the built-in transformer; And while forming a narrow width compared to the front and rear width of the first body box, the inner side of the first body box from the rear to the lower side is formed to extend in an open form with the first body box, and STP (Switch Type Protector) to the front ) and a second body box in which high and low pressure connection terminals are formed, and a CL (Current Limited) fuse is built-in; It is characterized in that it is positioned within the front and rear width.

At this time, the high-voltage and low-voltage lead terminals of the transformer are characterized in that formed at the rear of the transformer.

In addition, the high-voltage and low-voltage lead terminals of the transformer are characterized in that formed in the lower rear of the transformer.

In addition, it is characterized in that the front, rear, left and right four sides of the first body box are provided with radiators, respectively.

The present invention described above has the following effects.

First, the pad transformer housing, which was only composed of a conventional rectangular parallelepiped body box, is composed of a first body box and a second body box located below the first body box, and a CL (Current Limited) fuse, which is conventionally located only in front of one body box , STP (Switch Type Protector) and high and low pressure connection terminals are configured in the second body box to reduce the front and rear width (Depth) of the pad transformer by approximately 36% from 1,250 mm to 800 mm. It can greatly improve the walking conditions of pedestrians using

In addition, since the front and rear width of the green belt between the road and the sidewalk is usually 1 m, when the ultra-slim pad transformer according to the present invention is installed in the green belt space, it is possible to improve the visual improvement effect as well as the space utilization ability of the sidewalk.

In addition, since it can be installed inside and outside of a narrow building, the power receiving capacity of the transformer can be expanded even with a minimum area.

In addition, since the complicated wiring work can take out the complicated protection device and the pull-out bushing from the lower part, it is possible to improve workability and shorten the work time required.

In addition, since the radiator can be installed on all four sides of the front, rear, left, and right sides of the main box, it is possible to improve the cooling efficiency according to the heat dissipation effect compared to the prior art.

1 is a front view schematically showing the internal and external configuration of a conventional pad transformer;
2 is a schematic side view of a conventional pad transformer;
3 is a plan view showing the configuration state of the radiator of the conventional pad transformer;
4 is a side view showing the internal configuration of a conventional pad transformer together;
5 is a front view schematically showing an external configuration state according to an embodiment of the present invention's ultra-slim pad transformer;
6 is a schematic side view according to an embodiment of the present invention's ultra-slim pad transformer;
7 is a plan view showing a configuration state of a radiator according to an embodiment of the present invention's ultra-slim pad transformer;
8 is a side view showing an internal configuration state according to an embodiment of the present invention's ultra-slim pad transformer.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the component from other components, and the essence, order, or order of the component is not limited by the term. When it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Before describing the present invention, the structure of the conventional pad transformer 10 will be described with reference to FIGS. 1 to 5 in order to help the understanding of the present invention. However, since the structure and function of each component of the pad transformer is a known technology, a detailed description thereof will be omitted for convenience.

The conventional pad transformer 10 is provided with a body box 11 inside an enclosure (reference numerals not shown).

A transformer 17 is installed in the lower inner side of the body box 11 , and insulating oil is filled in the body box 11 . The filled insulating oil serves to cool the heat generated from the transformer 17, and when the insulating oil is heated and the hydraulic pressure inside the body box 11 rises above a certain pressure, a safety valve ( The hydraulic pressure inside the body box 11 is discharged to the outside through the reference numerals not mentioned). A drain valve (not shown) for discharging insulating oil is formed in the lower portion of the body box 11 .

A plurality of high-pressure side bushings well 14 and low-pressure connection terminals 15 are formed on the front side of the body box 11, including STP (13, Switch Type Protector).

Radiators 16 are installed on both sides and rear surfaces of the body box 11 except for the front side, and the heat inside the body box 11 can be discharged to the outside through the radiator 16 .

In the conventional pad transformer 10 having the above structure, the high-pressure side bushing well 14 and the low-pressure side bushing 15 are formed on the front side, and the high-voltage and low-voltage cables are connected thereto. have to secure As mentioned in the background art, this may worsen the walking conditions for pedestrians, and if installed in front of a shopping mall, it may interfere with the goodwill in front of the shopping mall.

Figure 5 is a front view schematically showing an external configuration state according to an embodiment of the present invention's ultra-slim pad transformer, Figure 6 is a schematic side view according to an embodiment of the present invention's ultra-slim pad transformer, Figure 7 is the present invention It is a plan view showing the configuration of the radiator according to an embodiment of the ultra-slim pad transformer, and FIG. 8 is a side view showing the internal configuration of the ultra-slim pad transformer according to an embodiment of the present invention.

The present invention has been devised to solve the problem of the conventional pad transformer 10 described above. Hereinafter, with reference to FIGS. 5 to 8 , the ultra-slim pad transformer 100 of the present invention will be described.

The ultra-slim pad transformer 100 according to the present invention may be composed of a first body box 110 and a second body box 120 when externally divided. Both the first body box 110 and the second body box 120 are located inside the enclosure (reference numerals not described).

6 and 8 , the first body box 110 and the second body box 120 are connected in a 'L' shape, and are formed to communicate with each other.
More specifically, the second body box 120 is formed in a downward direction from the rear of the lower surface of the first body box 110 while forming a narrow width compared to the front and rear width of the first body box 110, the first The inner side of the main box 110 and the inner side of the second body box 120 are formed to extend in an open form.

A transformer 111 is installed in the first body box 110 . The lower portion of the transformer 111 is supported on the lower side of the inner front (left side of FIG. 8 ) of the first body box 110 . At this time, although not shown, a separate structure may be configured to support the transformer 111 inside the first body box 110 .

The CL fuse 121, the STP 122, the high-pressure side bushing well 123 and the low-pressure side bushing 124, which will be described later, are not formed in the first body box 110 according to the present invention. The front and rear widths (left and right widths based on FIG. 8 ) of the first body box 110 may be manufactured in consideration of only the front and rear widths of the transformer 111 . That is, the front and rear width of the first body box 110 is preferably configured to have a front and rear width in which the transformer 111 can be installed. Therefore, it is possible to configure the overall front and rear width of the first body box 110 to 800 mm. This has a dimensional reduction effect of about 36% compared to the front and rear width of the first body box 110, which was conventionally formed of 1,250 mm.

A radiator 112 is installed on the front, rear, left and right four sides of the first body box 110 , respectively. Compared to the structure that was installed only on three sides (left and right side surfaces and the rear side) of the conventional pad transformer, the effect of dissipating the heat inside the first body box 110 to the outside can be improved. Such a structure is possible because the first body box 110 and the second body box 120 are internally communicated, but each is configured separately, and the CL fuse 121, the STP 122 and the high-pressure side bushing This is because the well 123 and the low-pressure side bushing 124 are configured in the second body box 120 .

The second body box 120 is located in the lower portion of the first body box (110). The second body box 120 may be composed of the first body box 110 and one housing. At this time, the interior of the first body box 110 and the second body box 120, as shown in FIG. 8, is formed in a mutually communicated structure.

STP (122, Switch Type Protector), the high-pressure side bushing well 123 and the low-pressure side bushing 124 are formed on the front surface of the second body box 120 . In addition, a CL (Current Limited) fuse 121 is installed inside the lower inner side of the second body box 120 .

Referring to FIG. 8 , the second body box 120 is formed to have a smaller width than the front and rear widths (left and right widths based on the drawing) of the first body box 110 . At this time, since the transformer 111 must be installed in a supported state on the lower surface of the inner front (left side with reference to FIG. 8) of the first body box 110, the second body box (in consideration of the center of gravity of the transformer 111) 120) can be set. However, a space in which the CL fuse 121 , the STP 122 , the high-pressure side bushing well 123 and the low-pressure side bushing 124 can be installed must be secured. In addition, if the first body box 110 and the second body box 120 are formed in communication with each other, the front and rear width of the second body box 120 is formed only smaller than the front and rear width of the first body box 110 . It is also possible That is, in consideration of all the lengths of the STP 122 , the high-pressure side bushing well 123 and the low-pressure side bushing 124 that are exposed to the outside of the front surface of the second body box 120 , the front and rear of the second body box 120 . It is possible if the width is formed only smaller than the front and rear width of the first body box (110).
In other words, the second body box 120 and the STP (122), the high-pressure side bushing well 123 and the low-pressure side bushing 124 are all located within the front and rear width of the first body box (110).

The second body box 120 is located in the lower rear (right side relative to FIG. 8) of the first body box 110, the front lower portion of the first body box 110 may constitute a support.

On the other hand, in the transformer 111 applied to the present invention, high and low voltage lead terminals (not shown) should be formed in the rear (right side with reference to FIG. 8 ) of the transformer 111 . More preferably, it should be formed in the lower rear of the transformer (111). The high-voltage side lead terminal (not shown) formed on the transformer 111 and the STP 122 formed on the front surface of the second body box 120 are connected to each other by the high-voltage side lead wire 126 , and the low-voltage side formed in the transformer 111 . The low-pressure side bushing 124 formed on the front of the lead terminal (not shown) and the second body box 120 is connected to the low-pressure side lead wire 127 . Therefore, the shortest for connection with the STP 122 and the low-voltage side bushing 124 formed on the front side of the second body box 120 only by forming a high-voltage and low-voltage lead terminal (not shown) in the lower rear portion of the transformer 111 . distance can be obtained. In addition, the STP 122 is connected to the high-pressure side bushing well 123 through the CL (Current Limited) fuse 121 built into the second body box 120 .

To this end, an openable and openable hand hole 125 is provided on the rear side (the right side with reference to FIG. 8 ) of the second body box 120 . The assembly work for wiring the high and low voltage connection terminal, the STP 122 and the CL fuse 121 inside the second body box 120 can be performed through the hand hole 125 .

The inside of the first body box 110 and the second body box 120 is filled with insulating oil. That is, the insulating oil injected through the first body box 110 is filled up to the first body box 110 from the bottom of the second body box 120 . A safety valve (not shown) for discharging this to the outside of the first body box 110 when the insulating oil is heated and hydraulic pressure higher than a certain pressure is generated in the upper portion of the first body box 110 may be installed. In addition, a drain valve (not shown) for discharging the insulating oil inside the first body box 110 and the second body box 120 to the outside may be installed at a lower portion of the second body box 110 .

According to the present invention described above, it consists of the first body box 110 and the second body box 120, and the CL fuse 121, the STP 122 and the high pressure which were configured in the first body box 110, and By configuring the low-pressure connection terminal in the second body box 120, it is possible to reduce the front and rear width of the pad transformer 100 compared to the prior art, thereby improving the walking conditions of pedestrians.

In the above, even if all the components constituting the embodiment of the present invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise specified, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be construed as being consistent with the contextual meaning of the related art, and should not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are for explanation rather than limiting the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: pad transformer
11: body box 12: CL fuse
13: STP 14: high-pressure side bushing well
15: low pressure side bushing 16: radiator
17: transformer
100: ultra-slim pad transformer
110: first body box 111: transformer
112: radiator 120: second body box
121: CL fuse 122: STP
123: high-pressure side bushing well 124: low-pressure side bushing
125: hand hole 126: high-voltage side lead wire
127: low-pressure side lead wire 130: support

Claims (4)

a first body box having a built-in transformer, the front and rear widths having a size corresponding to the front and rear widths of the built-in transformer; and
While forming a narrow width compared to the front and rear width of the first body box, the inner side of the first body box extends from the rear to the lower side in an open form with the first body box, and STP (Switch Type Protector) to the front and a second body box in which high-pressure and low-pressure connection terminals are formed, and a CL (Current Limited) fuse is built-in;
The second body box and the STP, and the high and low pressure connection terminals are ultra-slim pad transformer, characterized in that located within the front and rear width of the first body box. According to claim 1,
The high-voltage and low-voltage lead terminals of the transformer are ultra-slim pad transformers that are formed at the rear of the transformer. According to claim 1,
The high-voltage and low-voltage lead terminals of the transformer are ultra-slim pad transformer which is formed in the lower rear part of the transformer. According to claim 1,
An ultra-slim pad transformer provided with a radiator on each of the front, rear, left, and right four sides of the first body box.

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