KR101460298B1 - Current transformer fixture for Gas Insulated Switchgear - Google Patents

Current transformer fixture for Gas Insulated Switchgear Download PDF

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Publication number
KR101460298B1
KR101460298B1 KR1020100043972A KR20100043972A KR101460298B1 KR 101460298 B1 KR101460298 B1 KR 101460298B1 KR 1020100043972 A KR1020100043972 A KR 1020100043972A KR 20100043972 A KR20100043972 A KR 20100043972A KR 101460298 B1 KR101460298 B1 KR 101460298B1
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KR
South Korea
Prior art keywords
container
shield
inner shield
current transformer
axial
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KR1020100043972A
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Korean (ko)
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KR20110124539A (en
Inventor
최인호
곽성효
최병화
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현대중공업 주식회사
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Publication of KR101460298B1 publication Critical patent/KR101460298B1/en

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

A current transformer fixing device of a gas insulated switchgear according to the present invention is a transformer fixing device for a gas insulated switchgear comprising a first container and a second container which enclose the outside of a conductor to which a power line is electrically connected and each one of the divided axial ends is coupled by at least one fastening member, An outer shield and an inner shield which are respectively formed at one end in the axial direction of the first container or the second container so as to be divided into the inner and outer sides and in which a space is formed between the inner shield and the inner shield; And a current transformer fixed to be in contact with the shield or the inner shield.

Description

Technical Field [0001] The present invention relates to a current transformer fixture for a gas insulated switchgear,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas insulated switchgear, and more particularly, to a current transformer fixing device for a gas insulated switchgear which can minimize space occupied by a fixing device of a current transformer, .

Generally, the gas insulated switchgear (GIS) is installed on electric lines for indoor and outdoor power plants and substations. It can not only open and close the load current artificially in normal use condition, Voltage power system that protects the power system and the power equipment by safely shutting off the current when it occurs.

The gas insulated switchgear is provided with opening and closing facilities such as a breaker (CB), a disconnector (DS), a current transformer (CT) and a grounding switch (ES) in a metal tank filled and sealed with a gas 6 of incombustible (SF 6 ) ).

In the conventional current transformer fixing device, a stationary metal hole is formed on the inside of the container disposed on the outer peripheral side of the current transformer, and a current transformer fixing bolt is fastened to the stationary metal hole.

However, in the conventional current transformer fixing device, there is a restriction in the storage space between the upper side of the current transformer and the airtight flange, making it difficult to miniaturize the device.

In addition, when the current transformer is housed in the container, the outer diameter of the current transformer can be made smaller than the inner diameter of the stationary metal sphere. Therefore, there is a disadvantage in that the space is also restricted in the diameter direction of the container and the volume of the container is increased.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a transformer in which a space for installing a transformer is minimized, And it is an object of the present invention to provide a current transformer fixing device for a gas insulated switchgear which can reduce the size of a container.

According to an aspect of the present invention, there is provided a power supply apparatus including a first container and a second container surrounding an outer surface of a conductor to which a power line is electrically connected, the one end of each of the divided axes being coupled by at least one fastening member, An outer shield and an inner shield which are respectively formed at one axial end portion of the first container or at an axial end of the second container so as to be divided into the inner and outer sides and in which a space is formed between the outer shield and the inner shield; And a current transformer fixed to be in contact with the shield.

Here, the outer shield and the inner shield may be integrally formed at one axial end of the first container, and one end in the axial direction of the second container may be engaged with one axial end of the outer shield.

The outer shield is integrally formed at one axial end of the first container and is coupled to one axial end of the outer shield and one axial end of the second container, And may be integrally formed at one end in the axial direction, and may be formed to be separated from the first container.

The outer shield is integrally formed at one end in the axial direction of the first container, the inner shield is formed to be separated from one end of the first container in a state where the current transformer is fixed, And one end in the axial direction may be engaged with the one axial end of the second container by the at least one second fastening member.

In addition, the second fastening member may be inserted through one end of the second shield, which is bent from one end in the axial direction of the second container, to the bent end of the inner shield, or is inserted through one end of the inner shield in the axial direction of the second container .

The current transformer may be coupled to the inner shield or the outer shield by a separate adhesive, and the adhesive may be an epoxy resin.

At least one packing ring may be inserted between the one end of the first container and the one end of the second container.

As described above, according to the present invention, it is possible to minimize the storage space of the fixing device of the current transformer used in the gas insulated switchgear, to secure the installation space of the fixing device, and to minimize the size of the container in which the current transformer is installed There is an advantage.

1 is a cross-sectional view showing a current transformer fixing device of a gas insulated switchgear according to a first embodiment of the present invention.
2 is a cross-sectional view showing a current transformer fixing device of a gas insulated switchgear according to a second embodiment of the present invention.
3 is a cross-sectional view showing a current transformer fixing device of a gas insulated switchgear according to a third embodiment of the present invention.
4 is a cross-sectional view showing another fastening method of the second fastening bolt according to FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, the defined terms are defined in consideration of the function of the present invention, and should not be understood in a limiting sense of the technical elements of the present invention.

FIG. 1 is a cross-sectional view showing a current transformer fixing device of a gas insulated switchgear according to a first embodiment of the present invention, FIG. 2 is a sectional view showing a current transformer fixing device of a gas insulated switchgear according to a second embodiment of the present invention, FIG. 3 is a cross-sectional view showing a current transformer fixing device of a gas insulated switchgear according to a third embodiment of the present invention, and FIG. 4 is a sectional view showing another fastening method of the second fastening bolt according to FIG.

1 to 4, a current transformer fixing device of a gas insulated switchgear according to the present invention includes an outer conductor 100 on which a power line (not shown) is electrically connected, A first container 200 and a second container 300 coupled to each other by at least one first fastening member 210 and a second container 300 coupled to the first container 200 or the second container 300, An outer shield 220 and an inner shield 230 which are each formed to be divided to the outer side and in which a space 240 is formed between each of the outer shield 220 and the inner shield 230; And a current transformer (400) fixed to the inner shield (230).

1 to 4 show one conductor 100, it is to be noted that the present invention is applicable to all of the conductors (three phases, etc.).

1, the outer shield 220 and the inner shield 230 are integrally formed at one axial end of the first container 200, and the outer shield 230 220 and one axial end of the second container 300 can be engaged with each other.

Such a structure is a configuration in which the space 240 formed by the outer shield 220 and the inner shield 230 is opened at one end in the axial direction of the first container 200.

2, the outer shield 220 is integrally formed at one end in the axial direction of the first container 200, and the outer shield 220 is integrally formed with the outer shield 220, And one axial end of the second container 300 is coupled. The inner shield 230 may be integrally formed at one end in the axial direction of the second container 300 and may be formed separately from the first container 200.

In such a structure, the outer shield 220 and the inner shield 230 are positioned so as to intersect with each other in the upper and lower directions, so that when the first container 200 and the second container 200 ' .

3 and 4, the outer shield 220 is integrally formed at one end in the axial direction of the first container 200, and the inner shield 230 is integrally formed at one end in the axial direction of the first container 200. Further, in the third embodiment of the present invention, May be formed to be separated from one end of the first container 200 in a state where the current transformer is fixed. And an axially one end that is bent and extended outwardly may be penetratively coupled to one axial end of the second container 300 by at least one second fastening member.

The second fastening member may be a bolt or the like and may be inserted through one end of the inner shield 230 in the axial direction from the one end of the second container 300, And may be inserted into one end of the second container 300 in the axial direction from one end thereof.

That is, the inner shield 230, which is separated by using the second fastening member 250, can be easily engaged and disengaged, and the space portion formed by the inner shield 230 and the outer shield 220 240 are opened in the axial direction of the first container 200 and the second container 300, the present invention provides a structure in which the current transformer 400 can be easily installed through the space portion opened in the axial direction.

Meanwhile, the current transformer 400 is placed in contact with the inner shield 230 or the outer shield 220, and a separate adhesive may be applied between the contact surfaces of the current transformer 400 and the shield to be attached to each other. The adhesive is preferably an epoxy-based resin (not shown).

In addition, at least one packing ring 500 may be inserted between one end of the first container 200 and the second container 300 to which the first container 200 is coupled. Here, the packing ring 500 may be made of rubber or synthetic resin to improve the hermeticity.

As a result, the present invention minimizes the storage space of the fixing device of the current transformer 400 used in the gas insulated switchgear, thereby easily securing the installation space of the fixing device and minimizing the size of the container in which the current transformer 400 is installed can do.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

Accordingly, it is a matter of course that various modifications and variations of the present invention are possible without departing from the scope of the present invention. And are included in the technical scope of the present invention.

100: conductor 200: first container
210: first fastening member 220: outer shield
230: inner shield 240:
250: second fastening member 300: second container
400: Current transformer 500: Packing ring

Claims (8)

A first container and a second container each of which surrounds the outside of a conductor to which a power line is electrically connected and in which one axial end of each of the first and second containers is coupled by at least one fastening member, And an outer shield and an inner shield are divided into inner and outer ends at one axial end,
Wherein the outer shield and the inner shield are integrally formed by extending at one axial end of the first container and forming a space between the outer shield and the inner shield,
And a current transformer connected to the outer shield or the inner shield by an adhesive while being in contact with the inner shield is fixedly installed in the space. A first container and a second container each of which surrounds the outside of a conductor to which a power line is electrically connected and in which one axial end of each of the first and second containers is coupled by at least one fastening member, And an outer shield and an inner shield are divided into inner and outer ends at one axial end,
Wherein the outer shield is integrally formed by extending one end in the axial direction of the first container so that one end in the axial direction is engaged with one end in the axial direction of the second container, and the inner shield is integrally formed with the second container And a space portion is formed between the outer shield and the inner shield,
And a current transformer connected to the outer shield or the inner shield by an adhesive while being in contact with the inner shield is fixedly installed in the space. delete A first container and a second container each of which surrounds the outside of a conductor to which a power line is electrically connected and in which one axial end of each of the first and second containers is coupled by at least one fastening member, And an outer shield and an inner shield are divided into inner and outer ends at one axial end,
Wherein the outer shield is integrally formed by extending from one end in the axial direction of the first container, the inner shield is separated from one end of the first container, Wherein the first shielding member and the second shielding member are connected to each other by at least one second coupling member, and a space is formed between the outer shield and the inner shield,
The one end in the axial direction of the inner shield which is bent and extended outwardly is contacted with the outer shield or the inner shield before the axial one end of the inner shield is connected to the one axial end of the second container by the at least one second fastening member And the current transformer is fixedly installed using an adhesive. 5. The method of claim 4,
The second fastening member is inserted through one end of the second shielded container from the one axial end of the second container to the bent end of the inner shield or through one end in the axial direction of the second container from the bent end of the inner shield Of the gas insulated switchgear. delete The method of claim 1, 2, or 4,
Wherein the adhesive is an epoxy resin. The method of claim 1, 2, or 4,
Wherein at least one packing ring is inserted between the one end of the first container and the one end of the second container.
KR1020100043972A 2010-05-11 2010-05-11 Current transformer fixture for Gas Insulated Switchgear KR101460298B1 (en)

Priority Applications (1)

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KR1020100043972A KR101460298B1 (en) 2010-05-11 2010-05-11 Current transformer fixture for Gas Insulated Switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100043972A KR101460298B1 (en) 2010-05-11 2010-05-11 Current transformer fixture for Gas Insulated Switchgear

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KR20110124539A KR20110124539A (en) 2011-11-17
KR101460298B1 true KR101460298B1 (en) 2014-11-11

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003164024A (en) * 2001-11-27 2003-06-06 Hitachi Ltd Current transformer fixing apparatus
KR20060042160A (en) * 2004-02-27 2006-05-12 에이비비 테크놀로지 아게 Compact current transformer casing for gas-insulated switchgear assemblies

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003164024A (en) * 2001-11-27 2003-06-06 Hitachi Ltd Current transformer fixing apparatus
KR20060042160A (en) * 2004-02-27 2006-05-12 에이비비 테크놀로지 아게 Compact current transformer casing for gas-insulated switchgear assemblies

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