KR102131131B1 - Pole Transformer for Noise Reduction - Google Patents

Abstract

The present invention relates to a pole transformer for noise reduction. The pole transformer includes: a transformer enclosure having an iron core and a coil that are built therein and a first bottom plate formed at the bottom; an insulating oil charged in the transformer enclosure; and a second bottom plate that is formed below the first bottom plate to be spaced apart from the first bottom plate so that a sealed sound insulation space is formed between the first bottom plate and the second bottom plate. The vibration and noise generated from the iron core and the coil are not directly transmitted to the bottom, but are absorbed primarily while passing through an air layer in the sound insulation space, so that the overall vibration and noise can be greatly reduced.

Description

Pole Transformer for Noise Reduction

The present invention relates to a noise-reducing columnar transformer, and more particularly, to a noise-reducing columnar transformer capable of suppressing transmission of vibration and noise generated during operation of an iron core and a coil installed inside a columnar transformer.

Generally, an electric transformer refers to a device that changes the voltage value of alternating current using electromagnetic induction.

In these transformers, coils are wound on both sides of an iron core, and a power source is connected to one side and a load side is electrically connected to the other side.

In addition, these transformers can be divided into small transformers installed on amplifiers, column transformers installed on poles of substation lines, and power transformers installed on power plants or substations depending on the place of use.

The column transformer is filled with insulating oil for the purpose of insulating and cooling the iron core and coil, and a heat radiating member for dissipating the insulating oil is additionally installed.

Hereinafter, a columnar transformer according to the prior art will be described with reference to FIG. 1.

As shown, the columnar transformer according to the prior art is a transformer enclosure (10) in which the iron core (11) and the coil (12) are installed, insulating oil (not shown) and the iron core (11) charged in the transformer enclosure (10). It is composed of a fixed frame 20 and the like having a fastening member 21 for firmly fixing the coil 12 in the transformer enclosure 10.

However, the columnar transformer according to the prior art has a structure in which the fixed frame 20 and the transformer enclosure 10 are directly connected to each other by the configuration of the fastening member 21, so that the iron core 11 and the coil 12 are operated. There was a problem in that the vibration and noise generated during the transmission to the transformer enclosure 10 were transferred to the floor.

Korean Registered Patent Publication No. 10-1746129 (2017.06.05)

The present invention has been devised to solve the problems of the prior art described above, and the object of the invention is to suppress the vibration and noise generated during operation of the iron core and the coil installed inside the columnar transformer from being transmitted to the outside more efficiently. It is to provide a noise reduction column transformer.

In order to achieve the above object, the noise reduction column transformer according to the present invention includes an iron core and a coil installed therein, and a transformer enclosure having a first bottom plate formed on the floor;

Insulating oil filled in the transformer enclosure; And,

A second bottom plate formed to be spaced apart from the bottom of the first bottom plate and forming a closed sound insulation space between the first bottom plate;

Characterized in that it comprises a.

It is characterized in that the insulating oil is accommodated in the sound insulation space.

The first bottom plate has a thickness that does not cause sagging deformation due to the weight of the iron core and the coil, and the second bottom plate is configured to be thinner than the first bottom plate.

The noise reduction columnar transformer,

A first connecting member extending radially inward from the inner circumferential surface of the transformer enclosure within the sound insulation space; And,

A first suction weight connected to a tip end of the first connecting member;

Characterized in that it further comprises a.

It is characterized in that a through-hole is formed inside the first suction weight.

The noise reduction columnar transformer,

A second connecting member extending from the first bottom plate toward the second bottom plate in the sound insulation space; And,

A second suction weight connected to a lower end of the second connecting member;

Characterized in that it further comprises a.

When viewed in plan view, the second suction weight and the second connecting member are characterized in that they are disposed between the inner circumferential surface of the transformer enclosure and the coil.

The inside of the second suction weight is characterized in that a through-hole is formed.

The sum of the lengths of the second connecting member and the second suction weight is characterized in that it is in a range of 70 to 80% of the gap between the first bottom plate and the second bottom plate.

According to the noise reduction column transformer of the present invention as described above, the iron core and the coil is installed and installed, a transformer enclosure in which a first bottom plate is formed on the floor, insulating oil filled in the transformer enclosure, and spaced downward from the first bottom plate It is formed so as to include a second bottom plate to form a closed sound insulation space between the first bottom plate, so that the vibration and noise generated from the iron core and the coil is not transmitted directly to the floor, but within the sound insulation space It is possible to achieve the effect that the overall vibration and noise is greatly reduced by being primarily absorbed while passing through the air layer.

In addition, according to the present invention, since the insulating oil having a density higher than that of the air layer is filled in the sound insulation space of the transformer enclosure in the sound insulation space, it is possible to more effectively absorb vibration and noise generated from the iron core and coil.

In addition, according to the present invention, the noise reduction column transformer, the first connection member extending radially inward from the inner circumferential surface of the transformer enclosure in the sound insulation space, and a first suction weight connected to the front end of the first connection member Since it is characterized in that it further comprises, the effect of being primarily absorbed while passing through the air layer in the sound insulation space without directly transmitting the vibration and noise generated from the iron core and coil to the floor by forming an air layer in the sound insulation space In addition to being able to plan, it is possible to obtain an effect of significantly reducing the amount transmitted to the floor by transmitting the vibration and noise to the first connecting member and the first suction weight.

In addition, according to the present invention, a through hole is formed in the inside of the first suction weight to minimize resistance due to insulating oil when the first suction weight is vibrated.

In addition, according to the present invention, the noise reduction column transformer, a second connecting member extending from the first bottom plate toward the second bottom plate in the sound insulation space, and a second suction weight connected to the front end of the second connecting member Since it is characterized in that it further comprises, by the air layer is formed in the sound insulation space, vibration and noise generated from the iron core and the coil are not directly transmitted to the floor but are primarily absorbed while passing through the air layer in the sound insulation space. In addition to being able to achieve the effect, it is possible to obtain an effect of significantly reducing the amount transmitted to the floor by transmitting the vibration and noise to the second connecting member and the second suction weight.

In addition, according to the present invention, a through hole is formed in the inside of the second suction weight to minimize resistance due to insulating oil during vibration of the second suction weight.

1 is a cross-sectional view showing the configuration of a columnar transformer according to the prior art.
Figure 2 is a front cross-sectional view showing the configuration of a noise reduction columnar transformer according to the first embodiment of the present invention.
3 is a partially enlarged front sectional view of FIG. 2.
4 is an enlarged front sectional view showing a configuration of a noise reduction columnar transformer according to a further embodiment of the first embodiment of the present invention.
5 is a front sectional view showing the configuration of a noise reduction columnar transformer according to a second embodiment of the present invention.
6 is a cross-sectional view of FIG. 5.
7 is a front sectional view showing the configuration of a noise reduction columnar transformer according to Embodiment 3 of the present invention.
8 is a cross-sectional view of FIG. 7.
9 is a cross-sectional view showing the configuration of the suction weight in FIGS. 5 to 8.
11 is a test example of measuring noise around the columnar transformer according to the prior art.
11 is a test example of measuring noise around the columnar transformer according to the present invention, and is a result of a noise measurement test targeting a configuration in which an air layer is accommodated in a sound insulation space.
12 is a test example of measuring noise around the columnar transformer according to the present invention, and is a noise measurement test result for a configuration in which insulating oil is filled in a sound insulation space.

Hereinafter, preferred embodiments of the noise reduction columnar transformer according to the present invention will be described in detail with reference to the accompanying drawings.

For reference, the terms and words used in the specification and claims should not be interpreted as being limited to ordinary or lexical meanings, and the inventor appropriately explains the concept of terms in order to explain his or her invention in the best way. Based on the principle that it can be defined, it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

In addition, the configuration shown in the embodiments and drawings described in this specification is only one of the most preferred embodiments of the present invention, and does not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.

Example 1

First, as shown in Figures 2 and 3, the noise reduction columnar transformer 1000 according to this embodiment, the iron core 800 and the coil 900 are installed and installed, the first bottom plate 110 on the bottom The transformer enclosure 100 is formed, the insulating oil 200 filled in the transformer enclosure 100, and is formed to be spaced apart below the first bottom plate 110 and sealed between the first bottom plate 110. It comprises a second bottom plate 300 to form a sound insulation space 310.

According to this configuration, since the air layer is formed in the sound insulation space 310, vibrations and noise generated from the iron core 800 and the coil 900 are not transmitted directly to the floor, but pass through the air layer in the sound insulation space 310. During this time, it is primarily absorbed, so that the overall vibration and noise can be greatly reduced.

That is, since vibration and noise generated from the iron core 800 and the coil 900 are absorbed by the air layer in the sound insulation space 310 and transmitted to the floor, actual vibration and noise measured at the floor are greatly reduced.

The transformer enclosure 100 preferably has a cylindrical inner circumferential surface shape, and the sound insulation space 310 is preferably composed of a cylinder having the same diameter as the transformer enclosure 100, but the sound insulation space 310 has a different specific shape. It may be composed of.

Meanwhile, as illustrated in FIG. 4, the insulating oil 320 may be filled in the sound insulation space 310 instead of the air layer.

In this way, since the insulating oil having a higher density than the air layer is filled in the sound insulation space 310 of the transformer enclosure 100, it is possible to more effectively absorb vibration and noise generated from the iron core 800 and the coil 900. do.

The insulating oil 320 is not necessarily the same as the insulating oil 200 in which the iron core 800 and the coil 900 are immersed.

Meanwhile, the first bottom plate 110 has a thickness that does not cause sagging deformation due to the weight of the iron core 800 and the coil 900, and the second bottom plate 300 is thinner than the first bottom plate 110. It is desirable to reduce the overall weight.

HB is a high-pressure bushing, and LB is a low-pressure bushing.

Example 2

5 and 6, the noise reduction columnar transformer 1000 according to the present embodiment, the iron core 800 and the coil 900 are installed and installed, the first bottom plate 110 is formed on the bottom Transformer enclosure 100, the insulating oil 200 filled in the transformer enclosure 100, and is formed to be spaced apart from the bottom of the first bottom plate 110, and a closed sound insulation space between the first bottom plate 110 It comprises a second bottom plate 300 forming the 310.

In addition, a first connecting member 410 extending radially inward from the inner circumferential surface of the transformer enclosure 100 in the sound insulation space 310 and a first suction weight connected to a front end of the first connecting member 410 420.

The first connecting member 410 is illustrated to extend horizontally, but may be formed to be slightly inclined in the vertical direction.

According to this configuration, since the air layer is formed in the sound insulation space 310, vibrations and noise generated from the iron core 800 and the coil 900 are not transmitted directly to the floor, but pass through the air layer in the sound insulation space 310. In addition to being able to achieve the effect of being primarily absorbed, the amount of vibration and noise transmitted to the floor by being transmitted to the first connecting member 410 and the first suction weight 420 is greatly increased. A decreasing effect can be obtained.

That is, when vibration occurs by the iron core 800 and the coil 900, there is an effect that the vibration is attenuated by the air layer, and at the same time, the first suction weight 420 and the first connecting member 410 are up and down. Vibration in the direction is absorbed in advance to be transmitted to the floor, so vibration and noise measured on the floor are greatly reduced.

The first suction weight 420 and the first connecting member 410 are preferably disposed at equal intervals along the inner circumferential surface of the transformer enclosure 100.

In addition, the first connecting member 410 is preferably made of a material such as a steel wire that can vibrate while being flexibly bent by vibration of the iron core 800 and the coil 900, and the first suction weight 420 ) Is preferably composed of a metal having a suitable weight.

Meanwhile, an insulating oil may be filled in the sound insulation space 310, and in this case, through holes in the first suction weight 420 in order to minimize resistance by the insulating oil when the first suction weight 420 vibrates. (421, see FIG. 9) may be formed through.

At this time, the diameter of the through-hole 421 is preferably set in a range of 3 to 5 mm so that smooth passage of insulating oil is achieved.

In addition, in the drawing, although the through hole 421 is formed in a cross shape, various other shapes are possible.

Example 3

7 and 8, the noise reduction columnar transformer 1000 according to the present embodiment, the iron core 800 and the coil 900 are installed and installed, the first bottom plate 110 is formed on the bottom Transformer enclosure 100, the insulating oil 200 filled in the transformer enclosure 100, and is formed to be spaced apart from the bottom of the first bottom plate 110, and a closed sound insulation space between the first bottom plate 110 It comprises a second bottom plate 300 forming the 310.

In addition, the noise reduction columnar transformer 1000 includes a second connecting member 510 extending from the first bottom plate 110 toward the second bottom plate 300 in the sound insulation space 310 and the first 2 further includes a second suction weight 520 connected to the lower end of the connecting member 510.

According to this configuration, since the air layer is formed in the sound insulation space 310, vibrations and noise generated from the iron core 800 and the coil 900 are not transmitted directly to the floor, but pass through the air layer in the sound insulation space 310. While being able to achieve the effect of being primarily absorbed, the amount transmitted to the floor is greatly reduced by the vibration and noise being transmitted to the second connecting member 510 and the second suction weight 520. The effect can be obtained.

That is, when vibration occurs by the iron core 800 and the coil 900, there is an effect that vibration is attenuated by the air layer, and at the same time, the second suction weight 520 and the second connecting member 510 are transverse. As it vibrates in the direction, the vibration to be transmitted to the floor is absorbed in advance.

When viewed in plan view, the second suction weight 520 and the second connecting member 510 are disposed between the inner circumferential surface of the transformer enclosure 100 and the coil 900 so that the iron core 800 and the coil 900 It is desirable to efficiently receive the vibrations generated from.

In addition, a plurality of the second connecting members 510 are disposed, and it is preferable to maintain an even distance from each other.

In addition, the length of the second connecting member 510 and the second suction weight 520 is in the range of 70 to 80% of the interval between the first bottom plate 110 and the second bottom plate 300 so that vibration is transmitted. It is desirable to prevent fluctuations from becoming large by minimizing fluctuation during vibration while making it easy.

The first connecting member 510 is preferably made of a material such as a steel wire that can vibrate while being flexibly bent by the vibration of the iron core 800 and the coil 900, and the second suction weight 520 is It is preferably composed of a metal with a suitable weight.

Meanwhile, an insulating oil may be filled in the sound insulation space 310, and in this case, through holes in the second suction weight 520 in order to minimize the resistance caused by the insulating oil when the second suction weight 520 vibrates. (521, see FIG. 9) may be formed through.

At this time, the diameter of the through-hole 521 is preferably set in a range of 3 to 5 mm so that smooth passage of insulating oil is achieved.

In addition, in the drawing, although the through hole 521 is formed in a cross shape, various other shapes are possible.

Test example

10 shows an example in which ambient noise is measured for an existing transformer enclosure, and FIGS. 11 to 12 show an example in which noise is measured for a transformer enclosure according to the present invention.

It is natural to use iron cores and coils of the same standard in FIGS. 10 to 12.

However, in Fig. 10, the thickness of the bottom plate of the transformer enclosure was 3.2 mm, and in Figs. 11 to 12, the first bottom plate was composed of 4.5 mm and the second bottom plate was composed of 3.2 mm.

As shown in FIG. 10, in the case of the conventional transformer enclosure, it was found that the average noise measured at a distance of 10 cm in the radial direction from the outer circumferential surface is 50.18 dB.

Also, as shown in FIG. 11, when applying a configuration in which an air layer was accommodated between the first bottom plate and the second bottom plate according to Example 1 of the present invention, it was found that an average of 46.68 dB of noise was generated around the transformer enclosure. .

In addition, as shown in FIG. 12, when applying a configuration in which insulating oil is filled between the first bottom plate and the second bottom plate according to the first embodiment of the present invention, it can be seen that an average of 45.18dB noise is generated around the transformer enclosure. there was.

The embodiments of the present invention are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible within the scope of the following claims.

100... transformer enclosure
110... 1st edition
200... insulating oil
300... Second edition
310... sound insulation space
410... first connecting member
420... First suction weight
421... Through hole
510... second connecting member
520... second exhaust weight
521... through hole
800... iron core
900... coil
1000... Column transformer

Claims (9)

A transformer enclosure in which an iron core and a coil are installed and a first bottom plate is formed on the floor;
Insulating oil filled in the transformer enclosure; And,
A second bottom plate formed to be spaced apart from the bottom of the first bottom plate and forming a closed sound insulation space between the first bottom plate;
Consisting of, including
A first connecting member extending radially inward from the inner circumferential surface of the transformer enclosure within the sound insulation space; And,
A first suction weight connected to a tip end of the first connecting member;
Noise reduction columnar transformer further comprising a.
According to claim 1,
Noise reduction columnar transformer, characterized in that a through-hole is formed inside the first suction weight.
A transformer enclosure in which an iron core and a coil are installed and a first bottom plate is formed on the floor;
Insulating oil filled in the transformer enclosure; And,
A second bottom plate formed to be spaced apart from the bottom of the first bottom plate and forming a closed sound insulation space between the first bottom plate;
Consisting of, including
A second connecting member extending from the first bottom plate toward the second bottom plate in the sound insulation space; And,
A second suction weight connected to a lower end of the second connecting member;
Noise reduction columnar transformer further comprising a.
According to claim 3,
When viewed in a plan view, the second suction weight and the second connecting member is a noise reduction column transformer, characterized in that disposed between the inner circumferential surface of the transformer enclosure and the coil.
According to claim 3,
Noise reducing columnar transformer, characterized in that a through hole is formed in the second suction weight.
According to claim 3,
The noise reduction column transformer according to claim 1, wherein the sum of the lengths of the second connecting member and the second suction weight is in the range of 70 to 80% of the interval between the first and second bottom plates.
The method according to any one of claims 1 to 6,
Noise reduction columnar transformer, characterized in that insulating oil is accommodated in the sound insulation space.
The method according to any one of claims 1 to 6,
The second bottom plate is a noise reduction columnar transformer, characterized in that it is configured to be thinner than the first bottom plate. delete

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