KR20140037623A - Trasformer tank - Google Patents
Trasformer tank Download PDFInfo
- Publication number
- KR20140037623A KR20140037623A KR1020120103992A KR20120103992A KR20140037623A KR 20140037623 A KR20140037623 A KR 20140037623A KR 1020120103992 A KR1020120103992 A KR 1020120103992A KR 20120103992 A KR20120103992 A KR 20120103992A KR 20140037623 A KR20140037623 A KR 20140037623A
- Authority
- KR
- South Korea
- Prior art keywords
- casing member
- reinforcing
- upper casing
- transformer
- enclosure
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to a transformer enclosure, the mechanical casing of the connecting portion of the lower casing member and the upper casing member in the transformer casing coupled to the lower casing member and the upper casing member to increase the size or separate equipment By reinforcing without the need for additional equipment, the transformer installation area is minimized, the equipment manufacturing cost is greatly reduced, and the risk of environmental pollution is reduced by preventing the leakage of insulating oil in the event of a transformer accident, and the reliability of power supply is improved.
Description
The present invention relates to a transformer enclosure, and more particularly to a transformer enclosure reinforced with mechanical strength of the transformer enclosure.
In general, a power transformer is a device that supplies an alternating voltage from an iron core by an alternating voltage applied to a high voltage winding. For example, the 154kV power transformer generates alternating magnetic flux in the iron core by the 154kV AC voltage applied to the high-voltage winding, and supplies an alternating voltage of 22.9kV in the low-voltage winding by denaturing the voltage by the electromagnetic induction action.
The iron core of the transformer has a structure that minimizes eddy current loss by stacking steel sheets containing silicon. In addition, the windings share the iron core between the low voltage winding and the high voltage winding, and have a concentric circular structure. Each of the windings is wound with insulating paper for strengthening the bonding force between the electric insulation and the continuous potential winding (CTC) in the form of a flat copper wire. The transformer includes the iron core and the winding, and includes an enclosure for a transformer filled with insulating oil therein.
The transformer enclosure is intended to maintain the mechanical form of the transformer and to block contact with outside air.
However, the transformer enclosure has a problem in that an abnormal voltage such as a lightning strike or an opening / closing surge flows in due to an arc generated due to an insulation breakdown in the interior due to an interlayer short circuit of the winding, or a burst of pressure.
In addition, as described above, the insulating oil filled in the interior of the transformer casing is ruptured, the insulating oil flows out and the environment is polluted, or the insulating oil vaporized by the arc contacts the outside air, causing a large accident such as a fire.
Such a transformer enclosure may have a problem of rupturing during use as described above, so that the thickness can be increased to increase the breakdown strength, but in this case, the burst limit of the enclosure itself increases, but on the contrary, the enclosure itself expands to increase pressure. Since the effect of mitigating is lowered, there is a problem that the possibility of the enclosure breaking due to the stress exceeding the rupture limit increases.
Alternatively, in order to solve the problem of the rupture of the transformer enclosure formed a vulnerable part in the transformer enclosure, when a certain pressure is generated due to a defect therein, the rupture is made in the vulnerable part, and insulating oil is applied to the vulnerable part. It has been proposed to connect an acceptable insulating oil tank and a nitrogen gas supply.
This means that when the fragile portion is ruptured, the insulating oil filled in the transformer enclosure is introduced into and stored in the insulating oil tank, and the fire is prevented by introducing nitrogen gas through the ruptured fragile portion.
However, in this case, in case of a large transformer, the distance between the arc generating point and the vulnerable part may be far, so that a rupture occurs in the enclosure close to the arc generating position before the pressure relief action due to the rupture of the vulnerable part occurs. In other words, the number of vulnerable parts is insufficient compared to the arc energy, so that the enclosure may rupture before the pressure releasing action is performed. In addition, this method is inconvenient to connect a complex structure in addition to the transformer body, the cost of the transformer will rise economically. In addition, in indoor substations or underground substations, since transformers are installed inside buildings, installation spaces are limited, so that additional insulating oil tanks and nitrogen gas supply units cannot be installed. In addition, when the surrounding pressure chamber is expanded to install the insulating oil tank, the nitrogen gas supply unit, and the like, there is a problem in that the substation area and the construction cost thereof are increased.
An object of the present invention is to provide a transformer enclosure that can reduce the installation cost and minimize the installation space by reinforcing the overall mechanical strength while maintaining the size of the transformer.
The object of the present invention, the iron core and the winding that is installed to surround the iron core is disposed inside, the transformer enclosure is filled with insulating oil therein,
A lower casing member formed in an enclosure shape with an upper portion open;
An upper casing member connected to an upper portion of the lower casing member; And
It is solved by providing an enclosure for a transformer, characterized in that it comprises a coupling reinforcement member for reinforcing the connecting portion of the lower casing member and the upper casing member.
In the transformer enclosure according to the present invention, the outer surface of the lower casing member and the upper casing member are welded to each other.
In the transformer enclosure according to the present invention, the coupling reinforcing member, the first housing coupling portion projecting inward on the upper portion of the lower casing; A second housing coupling portion protruding inward to a lower portion of the upper casing member and disposed to overlap the first housing coupling portion; And a casing coupler configured to couple the lower casing member and the upper casing member through the first housing coupler and the second housing coupler.
In the transformer enclosure according to the present invention, the lower casing member and the upper casing member further comprises a side reinforcing member fixed at the upper side to the upper casing member and the lower side to the lower casing member at the connection portion.
In the transformer enclosure according to the present invention, the side reinforcing member, the lower casing member and the upper casing member is disposed to correspond to the connecting portion and the arc cover portion formed to bend in the up and down directions; And a cover fixing part extending on upper and lower portions of the arc cover part and fixed to the upper casing member and the lower casing member.
In the transformer enclosure according to the invention, the side reinforcement member, a reinforcement cover portion of which part overlaps with the outer surface of the upper casing member, the other portion overlaps with the outer surface of the lower casing; A first reinforcing leg portion protruding inward from a portion of the reinforcing cover portion and fixed to an outer surface of the upper casing member; And a second reinforcing leg portion protruding inward from another portion of the reinforcing cover portion and fixed to an outer surface of the lower casing member.
In the transformer enclosure according to the present invention, the first and second reinforcement legs are provided in plurality.
In the transformer enclosure according to the present invention, a first housing connection portion protruding outwardly protrudes from the upper portion of the lower casing member, and a second housing connection portion protrudes outwardly from the lower portion of the upper casing member. The apparatus may further include an enclosure connecting member configured to integrally connect the upper casing member and the lower casing member by passing through the first housing connecting portion and the second housing connecting portion.
In the transformer enclosure according to the present invention, the enclosure connection member includes a connecting bolt portion penetrating the first enclosure connection portion and the second enclosure connection portion; And a connection nut part fastened to the mounting connection part.
In the transformer enclosure according to the present invention, the upper casing further includes a corner reinforcing member for reinforcing the connection portion of the upper side and the upper side of the upper casing member.
In the transformer enclosure according to the present invention, the edge reinforcing member, one end is fixed to the upper surface portion of the upper casing member, the other end is fixed to the upper side portion of the upper casing member, and includes a circular arc reinforcement panel formed do.
In the transformer enclosure according to the present invention, the edge reinforcing member, one end is fixed to the upper surface portion of the upper casing member, the other end is fixed to the upper side portion of the upper casing member and repeatedly bent to have elastic wrinkles An elastic reinforcement panel.
In the transformer enclosure according to the present invention, the edge reinforcing member, the first reinforcing beam is fixed to the inner edge at the connection portion of the upper surface portion and the upper side portion of the upper casing member; And a second reinforcement beam fixed to an outer edge at a connection portion of the upper and upper side portions of the upper casing member.
The present invention does not need to increase the size or reinforcement for reinforcement by reinforcing the mechanical strength by reinforcing only the weak parts of the enclosure, minimizing the transformer installation area, and greatly reducing the cost of manufacturing the equipment. have.
The present invention can reduce the risk of environmental pollution by preventing the leakage of insulating oil in the event of a transformer accident, it is possible to prevent the development of a transformer fire because the insulating oil does not leak to the outside. This has the effect of increasing the reliability of the power supply.
The present invention can be applied not only to power transformers, but also to distribution transformers, reactors, and the like, and can be applied to all power devices having enclosures in which an internal pressure occurs in an accident.
1 is a schematic view showing a transformer with a transformer enclosure according to the present invention
Figure 2 is a perspective view showing an example of the transformer enclosure according to the invention
3 is a cross-sectional view showing the enclosure connection portion in one example of the transformer enclosure according to the invention of FIG.
4 and 5 are cross-sectional views showing another example of reinforcing the enclosure connection portion in the transformer enclosure according to the invention
6 to 8 are cross-sectional views showing an example of reinforcing the rigidity of the connection portion of the upper cover portion in the transformer enclosure according to the invention
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
An example of an enclosure for a transformer according to the present invention will be described with reference to FIGS. 1 and 2 as follows.
Enclosure for a transformer according to the present invention is a transformer (1) including an iron core and a winding installed to surround the iron core is disposed therein. In addition, the transformer enclosure is sealed inside, filled with insulating oil therein, the outside is provided with a heat dissipation member (2) for cooling the insulating oil.
The transmission enclosure according to the present invention includes a
The
The
At the portion where the
An upper portion of the
The lower portion of the
The first
The connecting portion of the
A second
It includes a
The first
The first
The
That is, the
The
The magnitude of the fault current generated inside the transformer enclosure is in the range of 10-80 kA and the duration of the fault current is 2 to 9 cycles. The rupture of the transformer enclosure depends on the magnitude (pressure) of the arc energy and the expansion coefficient of the enclosure. The lower the voltage applied to the
The transformer enclosure according to the present invention is connected to the
On the other hand, the transformer housing according to the present invention, the
The
Referring to Figure 3, the
The
The
The
Referring to FIG. 4, the
A first reinforcing leg portion 44 which protrudes inward from a portion of the reinforcing
The second reinforcing
The first reinforcement leg 44 and the
Referring to FIG. 5, a
The first
The first
The
The
The
On the other hand, referring to Figure 6, the transformer enclosure according to the present invention is a corner reinforcing member for reinforcing the connecting portion of the
The weak part of the transformer enclosure according to the present invention is a welded portion or a corner portion between the plate and the plate, the
The
The
In addition, referring to Figure 7, the
The
The edge reinforcing member is mounted to surround the
Referring to FIG. 9, the
The second reinforcing
The first reinforcing
The
The present invention does not need to increase the size or reinforcement for reinforcement by reinforcing the mechanical strength by reinforcing only the weak parts of the enclosure, minimizing the transformer installation area, and greatly reducing the cost of manufacturing the equipment. have.
The present invention can reduce the risk of environmental pollution by preventing the leakage of insulating oil in the event of a transformer accident, it is possible to prevent the development of a transformer fire because the insulating oil does not leak to the outside. This has the effect of increasing the reliability of the power supply.
The present invention can be applied not only to power transformers, but also to distribution transformers, reactors, and the like, and can be applied to all power devices having enclosures in which an internal pressure occurs in an accident.
It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.
1: transformer 2: heat dissipation member
10: lower casing member 11: first housing coupling portion
12: first housing connecting portion 20: upper casing member
21: second housing coupling portion 22: second housing connecting portion
30
32: mounting nut part 40: side reinforcement member
41: arc cover portion 42: cover fixing portion
43: reinforcement cover portion 44: first reinforcement leg portion
45: second reinforcement leg 50: enclosure connection member
51
60: corner reinforcement member 61: arc reinforcement panel
62: elastic reinforcement panel 63: first reinforcement beam
64: second reinforcement beam
Claims (13)
A lower casing member formed in an enclosure shape with an upper portion open;
An upper casing member connected to an upper portion of the lower casing member; And
Enclosure for a transformer comprising a coupling reinforcement member for reinforcing the connecting portion of the lower casing member and the upper casing member.
The connecting portion of the lower casing member and the upper casing member is solved by providing an enclosure for a transformer, which is connected by welding the outer surfaces of the lower casing member and the upper casing member.
The coupling reinforcing member,
A first housing coupling part protruding inward to an upper portion of the lower casing;
A second housing coupling portion protruding inward to a lower portion of the upper casing member and disposed to overlap the first housing coupling portion; And
And a casing coupler configured to couple the lower casing member and the upper casing member through the first housing coupler and the second housing coupler.
The lower casing member and the upper casing member in the connecting portion, the upper side is fixed to the upper casing member, the lower side further comprises a side reinforcement member is fixed to the lower casing member.
The side reinforcing member,
An arc cover portion in which the lower casing member and the upper casing member are disposed to correspond to the connecting portion and are bent in up and down directions;
The transformer housing, characterized in that it comprises a cover fixing portion extending on the upper and lower portions of the arc cover portion and fixed to the upper casing member and the lower casing member.
The side reinforcing member,
A reinforcement cover portion of which a portion overlaps with an outer surface of the upper casing member and another portion overlaps with an outer surface of the lower casing;
A first reinforcing leg portion protruding inward from a portion of the reinforcing cover portion and fixed to an outer surface of the upper casing member; And
And a second reinforcing leg portion protruding inward from another portion of the reinforcing cover portion and fixed to an outer surface of the lower casing member.
The first reinforcing leg portion and the second reinforcing leg portion is a transformer enclosure, characterized in that provided with a plurality.
A first housing connecting portion protruding outwardly protrudes from an upper portion of the lower casing member, and a second housing connecting portion protruding outwardly protruding from a lower portion of the upper casing member,
The enclosure for a transformer further comprising an enclosure connection member for connecting the upper casing member and the lower casing member integrally through the first housing connection portion and the second housing connection portion.
The enclosure connection member,
A connecting bolt part penetrating the first housing connection part and the second housing connection part; And a connection nut part fastened to the mounting connection part.
And an edge reinforcing member for reinforcing a connection portion between an upper surface portion and an upper side portion of the upper casing member in the upper casing portion.
The corner reinforcing member,
One end is fixed to the upper surface portion of the upper casing member, the other end is fixed to the upper side portion of the upper casing member, the transformer enclosure characterized in that it comprises a curved reinforcement panel formed.
The corner reinforcing member,
One end is fixed to the upper surface portion of the upper casing member, the other end is fixed to the upper side portion of the upper casing member and repeatedly bent to include a reinforcing transformer enclosure characterized in that it comprises an elastic reinforcement panel provided with elastic wrinkles.
The corner reinforcing member,
A first reinforcing beam fixed to an inner edge at a connection portion of the upper and upper side portions of the upper casing member; And
And a second reinforcement beam fixed to an outer edge at a connection portion of the upper and upper side portions of the upper casing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120103992A KR20140037623A (en) | 2012-09-19 | 2012-09-19 | Trasformer tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020120103992A KR20140037623A (en) | 2012-09-19 | 2012-09-19 | Trasformer tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20140037623A true KR20140037623A (en) | 2014-03-27 |
Family
ID=50646407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020120103992A KR20140037623A (en) | 2012-09-19 | 2012-09-19 | Trasformer tank |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20140037623A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101883496B1 (en) * | 2017-03-01 | 2018-08-30 | 최우근 | Manufacturing method of functional panel for ground transformer |
| KR102227699B1 (en) * | 2020-12-28 | 2021-03-16 | 이형준 | Smart housing for measuring partial discharge |
| KR102233098B1 (en) * | 2020-12-28 | 2021-03-26 | 이형준 | Fabrication method of smart housing for measuring partial discharge |
-
2012
- 2012-09-19 KR KR1020120103992A patent/KR20140037623A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101883496B1 (en) * | 2017-03-01 | 2018-08-30 | 최우근 | Manufacturing method of functional panel for ground transformer |
| KR102227699B1 (en) * | 2020-12-28 | 2021-03-16 | 이형준 | Smart housing for measuring partial discharge |
| KR102233098B1 (en) * | 2020-12-28 | 2021-03-26 | 이형준 | Fabrication method of smart housing for measuring partial discharge |
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| Date | Code | Title | Description |
|---|---|---|---|
| WITN | Withdrawal due to no request for examination |